Merge remote-tracking branch 'upstream/master' into tvos

Common/MVKOSExtensions.h

@@ -18,12 +18,17 @@
 
 #pragma once
 
+#include "MVKCommonEnvironment.h"
 #include <dispatch/dispatch.h>
 #include <string>
+#include <limits>
 
 
 typedef float MVKOSVersion;
 
+/*** Constant indicating unsupported functionality in an OS. */
+static const MVKOSVersion kMVKOSVersionUnsupported = std::numeric_limits<MVKOSVersion>::max();
+
 /**
  * Returns the operating system version as an MVKOSVersion, which is a float in which the
  * whole number portion indicates the major version, and the fractional portion indicates 
@@ -33,9 +38,29 @@ typedef float MVKOSVersion;
  */
 MVKOSVersion mvkOSVersion();
 
+/** Returns a MVKOSVersion built from the version components. */
+inline MVKOSVersion mvkMakeOSVersion(uint32_t major, uint32_t minor, uint32_t patch) {
+	return (float)major + ((float)minor / 100.0f) + ((float)patch / 10000.0f);
+}
+
 /** Returns whether the operating system version is at least minVer. */
 inline bool mvkOSVersionIsAtLeast(MVKOSVersion minVer) { return mvkOSVersion() >= minVer; }
 
+/**
+ * Returns whether the operating system version is at least the appropriate min version.
+ * The constant kMVKOSVersionUnsupported can be used for either value to cause the test
+ * to always fail on that OS, which is useful for indidicating functionalty guarded by
+ * this test is not supported on that OS.
+ */
+inline bool mvkOSVersionIsAtLeast(MVKOSVersion macOSMinVer, MVKOSVersion iOSMinVer) {
+#if MVK_MACOS
+	return mvkOSVersionIsAtLeast(macOSMinVer);
+#endif
+#if MVK_IOS
+	return mvkOSVersionIsAtLeast(iOSMinVer);
+#endif
+}
+
 /**
  * Returns a monotonic timestamp value for use in Vulkan and performance timestamping.
  *

Common/MVKOSExtensions.mm

@@ -29,15 +29,11 @@
 
 using namespace std;
 
-static const MVKOSVersion kMVKOSVersionUnknown = 0.0f;
-static MVKOSVersion _mvkOSVersion = kMVKOSVersionUnknown;
 MVKOSVersion mvkOSVersion() {
-    if (_mvkOSVersion == kMVKOSVersionUnknown) {
+	static MVKOSVersion _mvkOSVersion = 0;
+	if ( !_mvkOSVersion ) {
 		NSOperatingSystemVersion osVer = [[NSProcessInfo processInfo] operatingSystemVersion];
-        float maj = osVer.majorVersion;
+		_mvkOSVersion = mvkMakeOSVersion((uint32_t)osVer.majorVersion, (uint32_t)osVer.minorVersion, (uint32_t)osVer.patchVersion);
-        float min = osVer.minorVersion;
-        float pat = osVer.patchVersion;
-        _mvkOSVersion = maj + (min / 100.0f) +  + (pat / 10000.0f);
 	}
 	return _mvkOSVersion;
 }

Demos/LunarG-VulkanSamples/API-Samples/API-Samples.xcodeproj/project.pbxproj

@@ -659,7 +659,6 @@
 				PRODUCT_NAME = "API-Samples";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
@@ -681,7 +680,6 @@
 				PRODUCT_NAME = "API-Samples";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -738,6 +736,7 @@
 		C01FCF4F08A954540054247B /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
@@ -768,6 +767,7 @@
 		C01FCF5008A954540054247B /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;

Demos/LunarG-VulkanSamples/API-Samples/generateSPIRVShaders

@@ -10,27 +10,14 @@
 set -e
 
 echo
-echo ========== Building MoltenVKShaderConverter tool ==========
+echo ========== Converting API-Samples shader files ==========
 echo
 
 cd "../../.."
 
-XC_PROJ="MoltenVKPackaging.xcodeproj"
-XC_SCHEME="MVKShaderConverterTool Package"
-
-xcodebuild  \
-	-project "MoltenVKPackaging.xcodeproj"  \
-	-scheme "MVKShaderConverterTool Package"  \
-	-quiet  \
-	build
-
-echo
-echo ========== Converting API-Samples shader files ==========
-echo
-
 "Package/Latest/MoltenVKShaderConverter/Tools/MoltenVKShaderConverter"  \
  -r -gi -so -oh -xs . -q  \
- -d "Demos/LunarG-VulkanSamples/VulkanSamples/API-Samples"
+ -d "Demos/LunarG-VulkanSamples/VulkanSamples/API-Samples" > /dev/null
 
 cd -  > /dev/null
 

Demos/LunarG-VulkanSamples/Cube/Cube.xcodeproj/project.pbxproj

@@ -359,7 +359,6 @@
 				PRODUCT_NAME = Cube;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
@@ -380,13 +379,13 @@
 				PRODUCT_NAME = Cube;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
 		C01FCF4F08A954540054247B /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
@@ -417,6 +416,7 @@
 		C01FCF5008A954540054247B /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;

Demos/LunarG-VulkanSamples/Hologram/Hologram.xcodeproj/project.pbxproj

@@ -360,7 +360,6 @@
 				LIBRARY_SEARCH_PATHS = "\"$(SRCROOT)/../../../MoltenVK/iOS/static\"";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
@@ -375,7 +374,6 @@
 				LIBRARY_SEARCH_PATHS = "\"$(SRCROOT)/../../../MoltenVK/iOS/static\"";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -416,6 +414,7 @@
 		C01FCF4F08A954540054247B /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
@@ -448,6 +447,7 @@
 		C01FCF5008A954540054247B /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;

Docs/MoltenVK_Runtime_UserGuide.md

@@ -256,6 +256,7 @@ In addition to core *Vulkan* functionality, **MoltenVK**  also supports the foll
 - `VK_KHR_push_descriptor`
 - `VK_KHR_relaxed_block_layout`
 - `VK_KHR_sampler_mirror_clamp_to_edge` *(macOS)*
+- `VK_KHR_sampler_ycbcr_conversion`
 - `VK_KHR_shader_draw_parameters`
 - `VK_KHR_shader_float16_int8`
 - `VK_KHR_storage_buffer_storage_class`
@@ -273,6 +274,7 @@ In addition to core *Vulkan* functionality, **MoltenVK**  also supports the foll
 - `VK_EXT_memory_budget` *(requires Metal 2.0)*
 - `VK_EXT_metal_surface`
 - `VK_EXT_post_depth_coverage` *(iOS, requires GPU family 4)*
+- `VK_EXT_robustness2`
 - `VK_EXT_scalar_block_layout`
 - `VK_EXT_shader_stencil_export` *(requires Mac GPU family 2 or iOS GPU family 5)*
 - `VK_EXT_shader_viewport_index_layer`

Docs/Whats_New.md

@@ -13,6 +13,20 @@ For best results, use a Markdown reader.*
 
 
 
+MoltenVK 1.0.44
+---------------
+
+Released TBD
+
+- Add support for extensions:
+	- VK_KHR_sampler_ycbcr_conversion
+	- VK_EXT_robustness2
+- Fix issue where mapped host-coherent device memory not updated from image contents on *macOS*.
+- Remove use of `@available()` directive as it was causing issues in some build environments.
+- Refactor **MoltenVK** *Xcode* build architectures.
+- Demo `API-Samples generateSPIRVShaders` no longer builds `MoltenVKShaderController` tool.
+
+
 MoltenVK 1.0.43
 ---------------
 

ExternalDependencies.xcodeproj/project.pbxproj

@@ -5077,34 +5077,24 @@
 		A90FD89D21CC4EAB00B92BB2 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					"SPIRV_CROSS_NAMESPACE_OVERRIDE=MVK_spirv_cross",
 				);
 				PRODUCT_NAME = SPIRVCross;
 				SDKROOT = iphoneos;
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
 		A90FD89E21CC4EAB00B92BB2 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					"SPIRV_CROSS_NAMESPACE_OVERRIDE=MVK_spirv_cross",
 				);
 				PRODUCT_NAME = SPIRVCross;
 				SDKROOT = iphoneos;
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -5185,10 +5175,6 @@
 		A972A80D21CECBBF0013AB25 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				DEPLOYMENT_POSTPROCESSING = YES;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = NO;
 				HEADER_SEARCH_PATHS = (
@@ -5200,17 +5186,12 @@
 				);
 				PRODUCT_NAME = SPIRVTools;
 				SDKROOT = iphoneos;
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
 		A972A80E21CECBBF0013AB25 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				DEPLOYMENT_POSTPROCESSING = YES;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = NO;
 				HEADER_SEARCH_PATHS = (
@@ -5222,7 +5203,6 @@
 				);
 				PRODUCT_NAME = SPIRVTools;
 				SDKROOT = iphoneos;
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -5263,11 +5243,7 @@
 		A972ABDA21CED7BC0013AB25 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					"AMD_EXTENSIONS=1",
@@ -5283,18 +5259,13 @@
 				);
 				PRODUCT_NAME = glslang;
 				SDKROOT = iphoneos;
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
 		A972ABDB21CED7BC0013AB25 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					"AMD_EXTENSIONS=1",
@@ -5310,7 +5281,6 @@
 				);
 				PRODUCT_NAME = glslang;
 				SDKROOT = iphoneos;
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -5362,6 +5332,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = NO;
@@ -5410,6 +5381,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = NO;

MoltenVK/MoltenVK.xcodeproj/project.pbxproj

@@ -1525,24 +1525,18 @@
 		A9B8EE1E1A98D796009C5A02 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
 		A9B8EE1F1A98D796009C5A02 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -1551,7 +1545,6 @@
 			buildSettings = {
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				SDKROOT = macosx;
-				VALID_ARCHS = x86_64;
 			};
 			name = Debug;
 		};
@@ -1560,7 +1553,6 @@
 			buildSettings = {
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				SDKROOT = macosx;
-				VALID_ARCHS = x86_64;
 			};
 			name = Release;
 		};
@@ -1568,6 +1560,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = NO;
@@ -1628,6 +1621,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = NO;

MoltenVK/MoltenVK/API/vk_mvk_moltenvk.h

@@ -50,7 +50,7 @@ typedef unsigned long MTLLanguageVersion;
  */
 #define MVK_VERSION_MAJOR   1
 #define MVK_VERSION_MINOR   0
-#define MVK_VERSION_PATCH   43
+#define MVK_VERSION_PATCH   44
 
 #define MVK_MAKE_VERSION(major, minor, patch)    (((major) * 10000) + ((minor) * 100) + (patch))
 #define MVK_VERSION     MVK_MAKE_VERSION(MVK_VERSION_MAJOR, MVK_VERSION_MINOR, MVK_VERSION_PATCH)

MoltenVK/MoltenVK/Commands/MVKCmdPipeline.mm

@@ -90,7 +90,9 @@ void MVKCmdPipelineBarrier<N>::encode(MVKCommandEncoder* cmdEncoder) {
 					break;
 
 				case MVKPipelineBarrier::Image:
-					resources[rezCnt++] = b.mvkImage->getMTLTexture();
+                    for (uint8_t planeIndex = 0; planeIndex < b.mvkImage->getPlaneCount(); planeIndex++) {
+                        resources[rezCnt++] = b.mvkImage->getMTLTexture(planeIndex);
+                    }
 					break;
 
 				default:

MoltenVK/MoltenVK/Commands/MVKCmdTransfer.h

@@ -103,7 +103,7 @@ public:
 
 protected:
 	MVKCommandTypePool<MVKCommand>* getTypePool(MVKCommandPool* cmdPool) override;
-	bool canCopyFormats();
+	bool canCopyFormats(const VkImageBlit& region);
 	bool canCopy(const VkImageBlit& region);
 	void populateVertices(MVKVertexPosTex* vertices, const VkImageBlit& region);
 
@@ -125,6 +125,7 @@ typedef MVKCmdBlitImage<4> MVKCmdBlitImageMulti;
 
 /** Describes Metal texture resolve parameters. */
 typedef struct {
+    VkImageCopy* copyRegion;
     uint32_t level;
     uint32_t slice;
 } MVKMetalResolveSlice;

MoltenVK/MoltenVK/Commands/MVKCmdTransfer.mm

@@ -62,16 +62,22 @@ VkResult MVKCmdCopyImage<N>::setContent(MVKCommandBuffer* cmdBuff,
 	_dstLayout = dstImageLayout;
 
 	_vkImageCopies.clear();		// Clear for reuse
-	for (uint32_t i = 0; i < regionCount; i++) {
+    for (uint32_t regionIdx = 0; regionIdx < regionCount; regionIdx++) {
-		_vkImageCopies.push_back(pRegions[i]);
+        auto& vkIR = pRegions[regionIdx];
-	}
+        uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIR.srcSubresource.aspectMask);
+        uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIR.dstSubresource.aspectMask);
     
         // Validate
         MVKPixelFormats* pixFmts = cmdBuff->getPixelFormats();
         if ((_dstImage->getSampleCount() != _srcImage->getSampleCount()) ||
-		(pixFmts->getBytesPerBlock(_dstImage->getMTLPixelFormat()) != pixFmts->getBytesPerBlock(_srcImage->getMTLPixelFormat()))) {
+            (pixFmts->getBytesPerBlock(_dstImage->getMTLPixelFormat(dstPlaneIndex)) != pixFmts->getBytesPerBlock(_srcImage->getMTLPixelFormat(srcPlaneIndex)))) {
             return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdCopyImage(): Cannot copy between incompatible formats, such as formats of different pixel sizes, or between images with different sample counts.");
         }
+        
+		_vkImageCopies.push_back(vkIR);
+	}
+    
+    // Validate
     if ((_srcImage->getMTLTextureType() == MTLTextureType3D) != (_dstImage->getMTLTextureType() == MTLTextureType3D)) {
         return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdCopyImage(): Metal does not support copying to or from slices of a 3D texture.");
     }
@@ -81,24 +87,28 @@ VkResult MVKCmdCopyImage<N>::setContent(MVKCommandBuffer* cmdBuff,
 
 template <size_t N>
 void MVKCmdCopyImage<N>::encode(MVKCommandEncoder* cmdEncoder, MVKCommandUse commandUse) {
-
-	MTLPixelFormat srcMTLPixFmt = _srcImage->getMTLPixelFormat();
-	bool isSrcCompressed = _srcImage->getIsCompressed();
-
-	MTLPixelFormat dstMTLPixFmt = _dstImage->getMTLPixelFormat();
-	bool isDstCompressed = _dstImage->getIsCompressed();
-
-	// If source and destination have different formats and at least one is compressed, use a temporary intermediary buffer
-	bool useTempBuffer = (srcMTLPixFmt != dstMTLPixFmt) && (isSrcCompressed || isDstCompressed);
-	if (useTempBuffer) {
     MVKPixelFormats* pixFmts = cmdEncoder->getPixelFormats();
     uint32_t copyCnt = (uint32_t)_vkImageCopies.size();
     VkBufferImageCopy vkSrcCopies[copyCnt];
     VkBufferImageCopy vkDstCopies[copyCnt];
     size_t tmpBuffSize = 0;
+
     for (uint32_t copyIdx = 0; copyIdx < copyCnt; copyIdx++) {
         auto& vkIC = _vkImageCopies[copyIdx];
         
+        uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIC.srcSubresource.aspectMask);
+        uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIC.dstSubresource.aspectMask);
+        
+        MTLPixelFormat srcMTLPixFmt = _srcImage->getMTLPixelFormat(srcPlaneIndex);
+        bool isSrcCompressed = _srcImage->getIsCompressed();
+
+        MTLPixelFormat dstMTLPixFmt = _dstImage->getMTLPixelFormat(dstPlaneIndex);
+        bool isDstCompressed = _dstImage->getIsCompressed();
+
+        // If source and destination have different formats and at least one is compressed, use a temporary intermediary buffer
+        bool useTempBuffer = (srcMTLPixFmt != dstMTLPixFmt) && (isSrcCompressed || isDstCompressed);
+
+        if (useTempBuffer) {
             // Add copy from source image to temp buffer.
             auto& srcCpy = vkSrcCopies[copyIdx];
             srcCpy.bufferOffset = tmpBuffSize;
@@ -129,8 +139,42 @@ void MVKCmdCopyImage<N>::encode(MVKCommandEncoder* cmdEncoder, MVKCommandUse com
             size_t bytesPerRow = pixFmts->getBytesPerRow(srcMTLPixFmt, vkIC.extent.width);
             size_t bytesPerRegion = pixFmts->getBytesPerLayer(srcMTLPixFmt, bytesPerRow, vkIC.extent.height);
             tmpBuffSize += bytesPerRegion;
+        } else {
+            // Map the source pixel format to the dest pixel format through a texture view on the source texture.
+            // If the source and dest pixel formats are the same, this will simply degenerate to the source texture itself.
+            id<MTLTexture> srcMTLTex = _srcImage->getMTLTexture(srcPlaneIndex, _dstImage->getMTLPixelFormat(dstPlaneIndex));
+            id<MTLTexture> dstMTLTex = _dstImage->getMTLTexture(dstPlaneIndex);
+            if ( !srcMTLTex || !dstMTLTex ) { return; }
+
+            id<MTLBlitCommandEncoder> mtlBlitEnc = cmdEncoder->getMTLBlitEncoder(commandUse);
+
+            // If copies can be performed using direct texture-texture copying, do so
+            uint32_t srcLevel = vkIC.srcSubresource.mipLevel;
+            MTLOrigin srcOrigin = mvkMTLOriginFromVkOffset3D(vkIC.srcOffset);
+            MTLSize srcSize = mvkClampMTLSize(mvkMTLSizeFromVkExtent3D(vkIC.extent),
+                                              srcOrigin,
+                                              mvkMTLSizeFromVkExtent3D(_srcImage->getExtent3D(srcPlaneIndex, srcLevel)));
+            uint32_t dstLevel = vkIC.dstSubresource.mipLevel;
+            MTLOrigin dstOrigin = mvkMTLOriginFromVkOffset3D(vkIC.dstOffset);
+            uint32_t srcBaseLayer = vkIC.srcSubresource.baseArrayLayer;
+            uint32_t dstBaseLayer = vkIC.dstSubresource.baseArrayLayer;
+            uint32_t layCnt = vkIC.srcSubresource.layerCount;
+
+            for (uint32_t layIdx = 0; layIdx < layCnt; layIdx++) {
+                [mtlBlitEnc copyFromTexture: srcMTLTex
+                                sourceSlice: srcBaseLayer + layIdx
+                                sourceLevel: srcLevel
+                               sourceOrigin: srcOrigin
+                                 sourceSize: srcSize
+                                  toTexture: dstMTLTex
+                           destinationSlice: dstBaseLayer + layIdx
+                           destinationLevel: dstLevel
+                          destinationOrigin: dstOrigin];
+            }
+        }
     }
 
+    if (tmpBuffSize > 0) {
         MVKBufferDescriptorData tempBuffData;
         tempBuffData.size = tmpBuffSize;
         tempBuffData.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
@@ -149,41 +193,6 @@ void MVKCmdCopyImage<N>::encode(MVKCommandEncoder* cmdEncoder, MVKCommandUse com
         // To be threadsafe...do NOT acquire and return the command from the pool.
         cpyCmd.setContent(cmdEncoder->_cmdBuffer, tempBuff, (VkImage)_dstImage, _dstLayout, copyCnt, vkDstCopies, true);
         cpyCmd.encode(cmdEncoder);
-
-	} else {
-		// Map the source pixel format to the dest pixel format through a texture view on the source texture.
-		// If the source and dest pixel formats are the same, this will simply degenerate to the source texture itself.
-		id<MTLTexture> srcMTLTex = _srcImage->getMTLTexture(_dstImage->getMTLPixelFormat());
-		id<MTLTexture> dstMTLTex = _dstImage->getMTLTexture();
-		if ( !srcMTLTex || !dstMTLTex ) { return; }
-
-		id<MTLBlitCommandEncoder> mtlBlitEnc = cmdEncoder->getMTLBlitEncoder(commandUse);
-
-		// If copies can be performed using direct texture-texture copying, do so
-		for (auto& cpyRgn : _vkImageCopies) {
-			uint32_t srcLevel = cpyRgn.srcSubresource.mipLevel;
-			MTLOrigin srcOrigin = mvkMTLOriginFromVkOffset3D(cpyRgn.srcOffset);
-			MTLSize srcSize = mvkClampMTLSize(mvkMTLSizeFromVkExtent3D(cpyRgn.extent),
-											  srcOrigin,
-											  mvkMTLSizeFromVkExtent3D(_srcImage->getExtent3D(srcLevel)));
-			uint32_t dstLevel = cpyRgn.dstSubresource.mipLevel;
-			MTLOrigin dstOrigin = mvkMTLOriginFromVkOffset3D(cpyRgn.dstOffset);
-			uint32_t srcBaseLayer = cpyRgn.srcSubresource.baseArrayLayer;
-			uint32_t dstBaseLayer = cpyRgn.dstSubresource.baseArrayLayer;
-			uint32_t layCnt = cpyRgn.srcSubresource.layerCount;
-
-			for (uint32_t layIdx = 0; layIdx < layCnt; layIdx++) {
-				[mtlBlitEnc copyFromTexture: srcMTLTex
-								sourceSlice: srcBaseLayer + layIdx
-								sourceLevel: srcLevel
-							   sourceOrigin: srcOrigin
-								 sourceSize: srcSize
-								  toTexture: dstMTLTex
-						   destinationSlice: dstBaseLayer + layIdx
-						   destinationLevel: dstLevel
-						  destinationOrigin: dstOrigin];
-			}
-		}
     }
 }
 
@@ -208,33 +217,37 @@ VkResult MVKCmdBlitImage<N>::setContent(MVKCommandBuffer* cmdBuff,
 
 	_srcImage = (MVKImage*)srcImage;
 	_srcLayout = srcImageLayout;
-
 	_dstImage = (MVKImage*)dstImage;
 	_dstLayout = dstImageLayout;
 
 	_filter = filter;
 
 	_vkImageBlits.clear();		// Clear for reuse
-	for (uint32_t i = 0; i < regionCount; i++) {
+    for (uint32_t regionIdx = 0; regionIdx < regionCount; regionIdx++) {
-		_vkImageBlits.push_back(pRegions[i]);
+        auto& vkIR = pRegions[regionIdx];
-	}
+        uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIR.srcSubresource.aspectMask);
 
         // Validate - depth stencil formats cannot be scaled or inverted
-	MTLPixelFormat srcMTLPixFmt = _srcImage->getMTLPixelFormat();
+        MTLPixelFormat srcMTLPixFmt = _srcImage->getMTLPixelFormat(srcPlaneIndex);
         if (pixFmts->isDepthFormat(srcMTLPixFmt) || pixFmts->isStencilFormat(srcMTLPixFmt)) {
-		bool canCopyFmts = canCopyFormats();
             for (auto& vkIB : _vkImageBlits) {
-			if ( !(canCopyFmts && canCopy(vkIB)) ) {
+                if ( !(canCopyFormats(vkIB) && canCopy(vkIB)) ) {
                     return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdBlitImage(): Scaling or inverting depth/stencil images is not supported.");
                 }
             }
         }
+
+		_vkImageBlits.push_back(vkIR);
+	}
+
 	return VK_SUCCESS;
 }
 
 template <size_t N>
-bool MVKCmdBlitImage<N>::canCopyFormats() {
+bool MVKCmdBlitImage<N>::canCopyFormats(const VkImageBlit& region) {
-	return ((_srcImage->getMTLPixelFormat() == _dstImage->getMTLPixelFormat()) &&
+    uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(region.srcSubresource.aspectMask);
+    uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(region.dstSubresource.aspectMask);
+	return ((_srcImage->getMTLPixelFormat(srcPlaneIndex) == _dstImage->getMTLPixelFormat(dstPlaneIndex)) &&
 			(_dstImage->getSampleCount() == _srcImage->getSampleCount()));
 }
 
@@ -255,8 +268,10 @@ void MVKCmdBlitImage<N>::populateVertices(MVKVertexPosTex* vertices, const VkIma
     const VkOffset3D& do1 = region.dstOffsets[1];
 
     // Get the extents of the source and destination textures.
-    VkExtent3D srcExtent = _srcImage->getExtent3D(region.srcSubresource.mipLevel);
+    uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(region.srcSubresource.aspectMask);
-    VkExtent3D dstExtent = _dstImage->getExtent3D(region.dstSubresource.mipLevel);
+    uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(region.dstSubresource.aspectMask);
+    VkExtent3D srcExtent = _srcImage->getExtent3D(srcPlaneIndex, region.srcSubresource.mipLevel);
+    VkExtent3D dstExtent = _dstImage->getExtent3D(dstPlaneIndex, region.dstSubresource.mipLevel);
 
     // Determine the bottom-left and top-right corners of the source and destination
     // texture regions, each as a fraction of the corresponding texture size.
@@ -317,9 +332,8 @@ void MVKCmdBlitImage<N>::encode(MVKCommandEncoder* cmdEncoder, MVKCommandUse com
 
 	// Separate BLITs into those that are really just simple texure region copies,
 	// and those that require rendering
-	bool canCopyFmts = canCopyFormats();
 	for (auto& vkIB : _vkImageBlits) {
-		if (canCopyFmts && canCopy(vkIB)) {
+		if (canCopyFormats(vkIB) && canCopy(vkIB)) {
 
 			const VkOffset3D& so0 = vkIB.srcOffsets[0];
 			const VkOffset3D& so1 = vkIB.srcOffsets[1];
@@ -351,10 +365,15 @@ void MVKCmdBlitImage<N>::encode(MVKCommandEncoder* cmdEncoder, MVKCommandUse com
 	}
 
 	// Perform those BLITs that require rendering to destination texture.
-	id<MTLTexture> srcMTLTex = _srcImage->getMTLTexture();
+    for (uint32_t blitIdx = 0; blitIdx < blitCnt; blitIdx++) {
-	id<MTLTexture> dstMTLTex = _dstImage->getMTLTexture();
+        auto& mvkIBR = mvkBlitRenders[blitIdx];
-	if (blitCnt && srcMTLTex && dstMTLTex) {
 
+        uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(mvkIBR.region.srcSubresource.aspectMask);
+        uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(mvkIBR.region.dstSubresource.aspectMask);
+
+        id<MTLTexture> srcMTLTex = _srcImage->getMTLTexture(srcPlaneIndex);
+        id<MTLTexture> dstMTLTex = _dstImage->getMTLTexture(dstPlaneIndex);
+        if (blitCnt && srcMTLTex && dstMTLTex) {
             cmdEncoder->endCurrentMetalEncoding();
 
             MTLRenderPassDescriptor* mtlRPD = [MTLRenderPassDescriptor renderPassDescriptor];
@@ -364,18 +383,15 @@ void MVKCmdBlitImage<N>::encode(MVKCommandEncoder* cmdEncoder, MVKCommandUse com
             mtlColorAttDesc.texture = dstMTLTex;
 
             MVKRPSKeyBlitImg blitKey;
-		blitKey.srcMTLPixelFormat = _srcImage->getMTLPixelFormat();
+            blitKey.srcMTLPixelFormat = _srcImage->getMTLPixelFormat(srcPlaneIndex);
             blitKey.srcMTLTextureType = _srcImage->getMTLTextureType();
-		blitKey.dstMTLPixelFormat = _dstImage->getMTLPixelFormat();
+            blitKey.dstMTLPixelFormat = _dstImage->getMTLPixelFormat(dstPlaneIndex);
             blitKey.srcFilter = mvkMTLSamplerMinMagFilterFromVkFilter(_filter);
             blitKey.dstSampleCount = mvkSampleCountFromVkSampleCountFlagBits(_dstImage->getSampleCount());
             id<MTLRenderPipelineState> mtlRPS = cmdEncoder->getCommandEncodingPool()->getCmdBlitImageMTLRenderPipelineState(blitKey);
 
             uint32_t vtxBuffIdx = cmdEncoder->getDevice()->getMetalBufferIndexForVertexAttributeBinding(kMVKVertexContentBufferIndex);
             
-		for (uint32_t blitIdx = 0; blitIdx < blitCnt; blitIdx++) {
-			auto& mvkIBR = mvkBlitRenders[blitIdx];
-
             mtlColorAttDesc.level = mvkIBR.region.dstSubresource.mipLevel;
 
             uint32_t layCnt = mvkIBR.region.srcSubresource.layerCount;
@@ -428,16 +444,19 @@ VkResult MVKCmdResolveImage<N>::setContent(MVKCommandBuffer* cmdBuff,
 
 	_vkImageResolves.clear();	// Clear for reuse
 	_vkImageResolves.reserve(regionCount);
-    for (uint32_t i = 0; i < regionCount; i++) {
+    for (uint32_t regionIdx = 0; regionIdx < regionCount; regionIdx++) {
-		_vkImageResolves.push_back(pRegions[i]);
+        auto& vkIR = pRegions[regionIdx];
-    }
+        uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIR.dstSubresource.aspectMask);
 
         // Validate
         MVKPixelFormats* pixFmts = cmdBuff->getPixelFormats();
-	if ( !mvkAreAllFlagsEnabled(pixFmts->getCapabilities(_dstImage->getMTLPixelFormat()), kMVKMTLFmtCapsResolve) ) {
+        if ( !mvkAreAllFlagsEnabled(pixFmts->getCapabilities(_dstImage->getMTLPixelFormat(dstPlaneIndex)), kMVKMTLFmtCapsResolve) ) {
             return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdResolveImage(): %s cannot be used as a resolve destination on this device.", pixFmts->getName(_dstImage->getVkFormat()));
         }
 
+		_vkImageResolves.push_back(vkIR);
+    }
+
 	return VK_SUCCESS;
 }
 
@@ -457,10 +476,12 @@ void MVKCmdResolveImage<N>::encode(MVKCommandEncoder* cmdEncoder) {
 	uint32_t sliceCnt = 0;
 
 	for (VkImageResolve& vkIR : _vkImageResolves) {
+        uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIR.srcSubresource.aspectMask);
+        uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIR.dstSubresource.aspectMask);
 
 		uint32_t mipLvl = vkIR.dstSubresource.mipLevel;
-		VkExtent3D srcImgExt = _srcImage->getExtent3D(mipLvl);
+		VkExtent3D srcImgExt = _srcImage->getExtent3D(srcPlaneIndex, mipLvl);
-		VkExtent3D dstImgExt = _dstImage->getExtent3D(mipLvl);
+		VkExtent3D dstImgExt = _dstImage->getExtent3D(dstPlaneIndex, mipLvl);
 
 		// If the region does not cover the entire content of the source level, expand the
 		// destination content in the region to the temporary image. The purpose of this
@@ -496,25 +517,23 @@ void MVKCmdResolveImage<N>::encode(MVKCommandEncoder* cmdEncoder) {
 		uint32_t layCnt = vkIR.dstSubresource.layerCount;
 		for (uint32_t layIdx = 0; layIdx < layCnt; layIdx++) {
 			MVKMetalResolveSlice& rslvSlice = mtlResolveSlices[sliceCnt++];
+            rslvSlice.copyRegion = &cpyRgn;
 			rslvSlice.level = vkIR.dstSubresource.mipLevel;
 			rslvSlice.slice = baseLayer + layIdx;
 		}
 	}
 
-	id<MTLTexture> srcMTLTex;
-	if (expCnt == 0) {
     // Expansion and copying is not required. Each mip level of the source image
     // is being resolved entirely. Resolve directly from the source image.
-		srcMTLTex = _srcImage->getMTLTexture();
+    MVKImage* xfrImage = _srcImage;
-
+	if (expCnt) {
-	} else {
 		// Expansion and copying is required. Acquire a temporary transfer image, expand
 		// the destination image into it, copy from the source image to the temporary image,
 		// and then resolve from the temporary image to the destination image.
 		MVKImageDescriptorData xferImageData;
 		_dstImage->getTransferDescriptorData(xferImageData);
 		xferImageData.samples = _srcImage->getSampleCount();
-		MVKImage* xfrImage = cmdEncoder->getCommandEncodingPool()->getTransferMVKImage(xferImageData);
+		xfrImage = cmdEncoder->getCommandEncodingPool()->getTransferMVKImage(xferImageData);
 
 		// Expand the current content of the destination image to the temporary transfer image.
 		MVKCmdBlitImage<N> expCmd;
@@ -530,8 +549,6 @@ void MVKCmdResolveImage<N>::encode(MVKCommandEncoder* cmdEncoder) {
 						   (VkImage)xfrImage, _dstLayout,
 						   copyCnt, copyRegions);
 		copyCmd.encode(cmdEncoder, kMVKCommandUseResolveCopyImage);
-
-		srcMTLTex = xfrImage->getMTLTexture();
 	}
 
 	cmdEncoder->endCurrentMetalEncoding();
@@ -540,13 +557,16 @@ void MVKCmdResolveImage<N>::encode(MVKCommandEncoder* cmdEncoder) {
     MTLRenderPassColorAttachmentDescriptor* mtlColorAttDesc = mtlRPD.colorAttachments[0];
     mtlColorAttDesc.loadAction = MTLLoadActionLoad;
     mtlColorAttDesc.storeAction = MTLStoreActionMultisampleResolve;
-	mtlColorAttDesc.texture = srcMTLTex;
-	mtlColorAttDesc.resolveTexture = _dstImage->getMTLTexture();
 
 	// For each resolve slice, update the render pass descriptor for
 	// the texture level and slice and create a render encoder.
 	for (uint32_t sIdx = 0; sIdx < sliceCnt; sIdx++) {
 		MVKMetalResolveSlice& rslvSlice = mtlResolveSlices[sIdx];
+        uint8_t srcPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(rslvSlice.copyRegion->srcSubresource.aspectMask);
+        uint8_t dstPlaneIndex = MVKImage::getPlaneFromVkImageAspectFlags(rslvSlice.copyRegion->dstSubresource.aspectMask);
+
+        mtlColorAttDesc.texture = xfrImage->getMTLTexture(srcPlaneIndex);
+        mtlColorAttDesc.resolveTexture = _dstImage->getMTLTexture(dstPlaneIndex);
 		mtlColorAttDesc.level = rslvSlice.level;
 		mtlColorAttDesc.slice = rslvSlice.slice;
 		mtlColorAttDesc.resolveLevel = rslvSlice.level;
@@ -675,12 +695,13 @@ VkResult MVKCmdBufferImageCopy<N>::setContent(MVKCommandBuffer* cmdBuff,
     _bufferImageCopyRegions.reserve(regionCount);
     for (uint32_t i = 0; i < regionCount; i++) {
         _bufferImageCopyRegions.push_back(pRegions[i]);
-    }
         
         // Validate
         if ( !_image->hasExpectedTexelSize() ) {
+            MTLPixelFormat mtlPixFmt = _image->getMTLPixelFormat(MVKImage::getPlaneFromVkImageAspectFlags(pRegions[i].imageSubresource.aspectMask));
             const char* cmdName = _toImage ? "vkCmdCopyBufferToImage" : "vkCmdCopyImageToBuffer";
-        return reportError(VK_ERROR_FORMAT_NOT_SUPPORTED, "%s(): The image is using Metal format %s as a substitute for Vulkan format %s. Since the pixel size is different, content for the image cannot be copied to or from a buffer.", cmdName, cmdBuff->getPixelFormats()->getName(_image->getMTLPixelFormat()), cmdBuff->getPixelFormats()->getName(_image->getVkFormat()));
+            return reportError(VK_ERROR_FORMAT_NOT_SUPPORTED, "%s(): The image is using Metal format %s as a substitute for Vulkan format %s. Since the pixel size is different, content for the image cannot be copied to or from a buffer.", cmdName, cmdBuff->getPixelFormats()->getName(mtlPixFmt), cmdBuff->getPixelFormats()->getName(_image->getVkFormat()));
+        }
     }
 
 	return VK_SUCCESS;
@@ -689,21 +710,23 @@ VkResult MVKCmdBufferImageCopy<N>::setContent(MVKCommandBuffer* cmdBuff,
 template <size_t N>
 void MVKCmdBufferImageCopy<N>::encode(MVKCommandEncoder* cmdEncoder) {
     id<MTLBuffer> mtlBuffer = _buffer->getMTLBuffer();
-    id<MTLTexture> mtlTexture = _image->getMTLTexture();
+    if ( !mtlBuffer ) { return; }
-    if ( !mtlBuffer || !mtlTexture ) { return; }
 
 	NSUInteger mtlBuffOffsetBase = _buffer->getMTLBufferOffset();
-    MTLPixelFormat mtlPixFmt = _image->getMTLPixelFormat();
     MVKCommandUse cmdUse = _toImage ? kMVKCommandUseCopyBufferToImage : kMVKCommandUseCopyImageToBuffer;
 	MVKPixelFormats* pixFmts = cmdEncoder->getPixelFormats();
 
     for (auto& cpyRgn : _bufferImageCopyRegions) {
+        uint8_t planeIndex = MVKImage::getPlaneFromVkImageAspectFlags(cpyRgn.imageSubresource.aspectMask);
+        MTLPixelFormat mtlPixFmt = _image->getMTLPixelFormat(planeIndex);
+        id<MTLTexture> mtlTexture = _image->getMTLTexture(planeIndex);
+        if ( !mtlTexture ) { continue; }
 
 		uint32_t mipLevel = cpyRgn.imageSubresource.mipLevel;
         MTLOrigin mtlTxtOrigin = mvkMTLOriginFromVkOffset3D(cpyRgn.imageOffset);
 		MTLSize mtlTxtSize = mvkClampMTLSize(mvkMTLSizeFromVkExtent3D(cpyRgn.imageExtent),
 											 mtlTxtOrigin,
-											 mvkMTLSizeFromVkExtent3D(_image->getExtent3D(mipLevel)));
+											 mvkMTLSizeFromVkExtent3D(_image->getExtent3D(planeIndex, mipLevel)));
 		NSUInteger mtlBuffOffset = mtlBuffOffsetBase + cpyRgn.bufferOffset;
 
         uint32_t buffImgWd = cpyRgn.bufferRowLength;
@@ -1075,29 +1098,31 @@ VkResult MVKCmdClearImage<N>::setContent(MVKCommandBuffer* cmdBuff,
     // Add subresource ranges
     _subresourceRanges.clear();		// Clear for reuse
     _subresourceRanges.reserve(rangeCount);
-    for (uint32_t i = 0; i < rangeCount; i++) {
+    bool isDS = isDepthStencilClear();
-        _subresourceRanges.push_back(pRanges[i]);
+    for (uint32_t rangeIdx = 0; rangeIdx < rangeCount; rangeIdx++) {
-    }
+        auto& vkIR = pRanges[rangeIdx];
+        uint8_t planeIndex = MVKImage::getPlaneFromVkImageAspectFlags(vkIR.aspectMask);
 
         // Validate
-	bool isDS = isDepthStencilClear();
+        MVKMTLFmtCaps mtlFmtCaps = cmdBuff->getPixelFormats()->getCapabilities(_image->getMTLPixelFormat(planeIndex));
-	if (_image->getImageType() == VK_IMAGE_TYPE_1D) {
-		return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdClear%sImage(): Native 1D images cannot be cleared on this device. Consider enabling MVK_CONFIG_TEXTURE_1D_AS_2D.", (isDS ? "DepthStencil" : "Color"));
-	}
-	MVKMTLFmtCaps mtlFmtCaps = cmdBuff->getPixelFormats()->getCapabilities(_image->getMTLPixelFormat());
         if ((isDS && !mvkAreAllFlagsEnabled(mtlFmtCaps, kMVKMTLFmtCapsDSAtt)) ||
             ( !isDS && !mvkAreAllFlagsEnabled(mtlFmtCaps, kMVKMTLFmtCapsColorAtt))) {
             return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdClear%sImage(): Format %s cannot be cleared on this device.", (isDS ? "DepthStencil" : "Color"), cmdBuff->getPixelFormats()->getName(_image->getVkFormat()));
         }
         
+        _subresourceRanges.push_back(vkIR);
+    }
+    
+    // Validate
+    if (_image->getImageType() == VK_IMAGE_TYPE_1D) {
+        return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdClear%sImage(): Native 1D images cannot be cleared on this device. Consider enabling MVK_CONFIG_TEXTURE_1D_AS_2D.", (isDS ? "DepthStencil" : "Color"));
+    }
+
 	return VK_SUCCESS;
 }
 
 template <size_t N>
 void MVKCmdClearImage<N>::encode(MVKCommandEncoder* cmdEncoder) {
-	id<MTLTexture> imgMTLTex = _image->getMTLTexture();
-    if ( !imgMTLTex ) { return; }
-
 	bool isDS = isDepthStencilClear();
 	NSString* mtlRendEncName = (isDS
 								? mvkMTLRenderCommandEncoderLabel(kMVKCommandUseClearDepthStencilImage)
@@ -1107,6 +1132,8 @@ void MVKCmdClearImage<N>::encode(MVKCommandEncoder* cmdEncoder) {
 
 	MVKPixelFormats* pixFmts = cmdEncoder->getPixelFormats();
 	for (auto& srRange : _subresourceRanges) {
+        id<MTLTexture> imgMTLTex = _image->getMTLTexture(MVKImage::getPlaneFromVkImageAspectFlags(srRange.aspectMask));
+        if ( !imgMTLTex ) { continue; }
 
 		MTLRenderPassDescriptor* mtlRPDesc = [MTLRenderPassDescriptor renderPassDescriptor];
 		MTLRenderPassColorAttachmentDescriptor* mtlRPCADesc = nil;

MoltenVK/MoltenVK/Commands/MVKCommandResourceFactory.mm

@@ -369,7 +369,7 @@ MVKImage* MVKCommandResourceFactory::newMVKImage(MVKImageDescriptorData& imgData
         .initialLayout = VK_IMAGE_LAYOUT_PREINITIALIZED
     };
 	MVKImage* mvkImg = _device->createImage(&createInfo, nullptr);
-	mvkImg->bindDeviceMemory(_transferImageMemory, 0);
+	mvkImg->bindDeviceMemory(_transferImageMemory, 0, 0);
 	return mvkImg;
 }
 

MoltenVK/MoltenVK/GPUObjects/MVKBuffer.h

@@ -40,10 +40,10 @@ public:
 #pragma mark Resource memory
 
 	/** Returns the memory requirements of this resource by populating the specified structure. */
-	VkResult getMemoryRequirements(VkMemoryRequirements* pMemoryRequirements) override;
+	VkResult getMemoryRequirements(VkMemoryRequirements* pMemoryRequirements);
 
 	/** Returns the memory requirements of this resource by populating the specified structure. */
-	VkResult getMemoryRequirements(const void* pInfo, VkMemoryRequirements2* pMemoryRequirements) override;
+	VkResult getMemoryRequirements(const void* pInfo, VkMemoryRequirements2* pMemoryRequirements);
 
 	/** Binds this resource to the specified offset within the specified memory allocation. */
 	VkResult bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize memOffset) override;
@@ -86,7 +86,6 @@ public:
 
 protected:
 	friend class MVKDeviceMemory;
-	using MVKResource::needsHostReadSync;
 
 	void propagateDebugName() override;
 	bool needsHostReadSync(VkPipelineStageFlags srcStageMask,

MoltenVK/MoltenVK/GPUObjects/MVKDescriptor.h

@@ -71,7 +71,7 @@ public:
 	inline uint32_t getBinding() { return _info.binding; }
 
 	/** Returns the number of descriptors in this layout. */
-	inline uint32_t getDescriptorCount() { return _info.descriptorCount; }
+    inline uint32_t getDescriptorCount() { return (_info.descriptorType == VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT) ? 1 : _info.descriptorCount; }
 
 	/** Returns the descriptor type of this layout. */
 	inline VkDescriptorType getDescriptorType() { return _info.descriptorType; }
@@ -115,6 +115,7 @@ public:
 	~MVKDescriptorSetLayoutBinding() override;
 
 protected:
+    friend class MVKInlineUniformBlockDescriptor;
 	void initMetalResourceIndexOffsets(MVKShaderStageResourceBinding* pBindingIndexes,
 									   MVKShaderStageResourceBinding* pDescSetCounts,
 									   const VkDescriptorSetLayoutBinding* pBinding);
@@ -152,11 +153,12 @@ public:
 
 	/**
 	 * Updates the internal binding from the specified content. The format of the content depends
-	 * on the descriptor type, and is extracted from pData at the location given by srcIndex * stride.
+	 * on the descriptor type, and is extracted from pData at the location given by index * stride.
+	 * MVKInlineUniformBlockDescriptor uses the index as byte offset to write to.
 	 */
 	virtual void write(MVKDescriptorSet* mvkDescSet,
 					   VkDescriptorType descriptorType,
-					   uint32_t srcIndex,
+					   uint32_t index,
 					   size_t stride,
 					   const void* pData) = 0;
 
@@ -167,12 +169,13 @@ public:
 	 * specified pImageInfo, pBufferInfo, or pTexelBufferView arrays, and the other
 	 * arrays are ignored (and may be a null pointer).
 	 *
-	 * The dstIndex parameter indicates the index of the initial descriptor element
+	 * The index parameter indicates the index of the initial descriptor element
 	 * at which to start writing.
+	 * MVKInlineUniformBlockDescriptor uses the index as byte offset to read from.
 	 */
 	virtual void read(MVKDescriptorSet* mvkDescSet,
 					  VkDescriptorType descriptorType,
-					  uint32_t dstIndex,
+					  uint32_t index,
 					  VkDescriptorImageInfo* pImageInfo,
 					  VkDescriptorBufferInfo* pBufferInfo,
 					  VkBufferView* pTexelBufferView,
@@ -284,25 +287,27 @@ public:
 
 	void write(MVKDescriptorSet* mvkDescSet,
 			   VkDescriptorType descriptorType,
-			   uint32_t srcIndex,
+			   uint32_t dstOffset, // For inline buffers we are using this parameter as dst offset not as src descIdx
 			   size_t stride,
 			   const void* pData) override;
 
 	void read(MVKDescriptorSet* mvkDescSet,
 			  VkDescriptorType descriptorType,
-			  uint32_t dstIndex,
+			  uint32_t srcOffset, // For inline buffers we are using this parameter as src offset not as dst descIdx
 			  VkDescriptorImageInfo* pImageInfo,
 			  VkDescriptorBufferInfo* pBufferInfo,
 			  VkBufferView* pTexelBufferView,
 			  VkWriteDescriptorSetInlineUniformBlockEXT* inlineUniformBlock) override;
     
+    void setLayout(MVKDescriptorSetLayoutBinding* dslBinding, uint32_t index) override;
+
 	void reset() override;
 
 	~MVKInlineUniformBlockDescriptor() { reset(); }
 
 protected:
-	id<MTLBuffer> _mtlBuffer = nil;
+	uint8_t* _buffer = nullptr;
-	uint32_t _dataSize = 0;
+    uint32_t _length;
 };
 
 

MoltenVK/MoltenVK/GPUObjects/MVKDescriptor.mm

@@ -89,11 +89,10 @@ uint32_t MVKDescriptorSetLayoutBinding::bind(MVKCommandEncoder* cmdEncoder,
 	// Establish the resource indices to use, by combining the offsets of the DSL and this DSL binding.
     MVKShaderResourceBinding mtlIdxs = _mtlResourceIndexOffsets + dslMTLRezIdxOffsets;
 
-	uint32_t descCnt = _info.descriptorCount;
+    uint32_t descCnt = getDescriptorCount();
     for (uint32_t descIdx = 0; descIdx < descCnt; descIdx++) {
         MVKDescriptor* mvkDesc = descSet->getDescriptor(descStartIndex + descIdx);
-		mvkDesc->bind(cmdEncoder, _info.descriptorType, descIdx, _applyToStage,
+        mvkDesc->bind(cmdEncoder, _info.descriptorType, descIdx, _applyToStage, mtlIdxs, dynamicOffsets, pDynamicOffsetIndex);
-					  mtlIdxs, dynamicOffsets, pDynamicOffsetIndex);
     }
     return descCnt;
 }
@@ -167,13 +166,13 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
             }
 
             case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT: {
-                const auto& inlineUniformBlock = get<VkWriteDescriptorSetInlineUniformBlockEXT>(pData, stride, rezIdx - dstArrayElement);
+                const auto& inlineUniformBlock = *(VkWriteDescriptorSetInlineUniformBlockEXT*)pData;
                 bb.mtlBytes = inlineUniformBlock.pData;
                 bb.size = inlineUniformBlock.dataSize;
                 bb.isInline = true;
                 for (uint32_t i = kMVKShaderStageVertex; i < kMVKShaderStageMax; i++) {
                     if (_applyToStage[i]) {
-                        bb.index = mtlIdxs.stages[i].bufferIndex + rezIdx;
+                        bb.index = mtlIdxs.stages[i].bufferIndex;
                         if (i == kMVKShaderStageCompute) {
                             if (cmdEncoder) { cmdEncoder->_computeResourcesState.bindBuffer(bb); }
                         } else {
@@ -189,12 +188,10 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
             case VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT: {
                 const auto& imageInfo = get<VkDescriptorImageInfo>(pData, stride, rezIdx - dstArrayElement);
                 MVKImageView* imageView = (MVKImageView*)imageInfo.imageView;
-                tb.mtlTexture = imageView->getMTLTexture();
+                uint8_t planeCount = (imageView) ? imageView->getPlaneCount() : 1;
-                if (_info.descriptorType == VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE) {
+                for (uint8_t planeIndex = 0; planeIndex < planeCount; planeIndex++) {
-                    tb.swizzle = imageView->getPackedSwizzle();
+                    tb.mtlTexture = imageView->getMTLTexture(planeIndex);
-                } else {
+                    tb.swizzle = (_info.descriptorType == VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE) ? imageView->getPackedSwizzle() : 0;
-                    tb.swizzle = 0;
-                }
                     if (_info.descriptorType == VK_DESCRIPTOR_TYPE_STORAGE_IMAGE) {
                         id<MTLTexture> mtlTex = tb.mtlTexture;
                         if (mtlTex.parentTexture) { mtlTex = mtlTex.parentTexture; }
@@ -204,7 +201,7 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
                     }
                     for (uint32_t i = kMVKShaderStageVertex; i < kMVKShaderStageMax; i++) {
                         if (_applyToStage[i]) {
-                        tb.index = mtlIdxs.stages[i].textureIndex + rezIdx;
+                            tb.index = mtlIdxs.stages[i].textureIndex + rezIdx + planeIndex;
                             if (i == kMVKShaderStageCompute) {
                                 if (cmdEncoder) { cmdEncoder->_computeResourcesState.bindTexture(tb); }
                             } else {
@@ -220,6 +217,7 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
                             }
                         }
                     }
+                }
                 break;
             }
 
@@ -280,12 +278,10 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
             case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER: {
                 const auto& imageInfo = get<VkDescriptorImageInfo>(pData, stride, rezIdx - dstArrayElement);
                 MVKImageView* imageView = (MVKImageView*)imageInfo.imageView;
-                tb.mtlTexture = imageView->getMTLTexture();
+                uint8_t planeCount = (imageView) ? imageView->getPlaneCount() : 1;
-                if (imageView) {
+                for (uint8_t planeIndex = 0; planeIndex < planeCount; planeIndex++) {
-                    tb.swizzle = imageView->getPackedSwizzle();
+                    tb.mtlTexture = imageView->getMTLTexture(planeIndex);
-                } else {
+                    tb.swizzle = (imageView) ? imageView->getPackedSwizzle() : 0;
-                    tb.swizzle = 0;
-                }
                     MVKSampler* sampler;
                     if (_immutableSamplers.empty()) {
                         sampler = (MVKSampler*)imageInfo.sampler;
@@ -296,7 +292,7 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
                     sb.mtlSamplerState = sampler->getMTLSamplerState();
                     for (uint32_t i = kMVKShaderStageVertex; i < kMVKShaderStageMax; i++) {
                         if (_applyToStage[i]) {
-                        tb.index = mtlIdxs.stages[i].textureIndex + rezIdx;
+                            tb.index = mtlIdxs.stages[i].textureIndex + rezIdx + planeIndex;
                             sb.index = mtlIdxs.stages[i].samplerIndex + rezIdx;
                             if (i == kMVKShaderStageCompute) {
                                 if (cmdEncoder) { cmdEncoder->_computeResourcesState.bindTexture(tb); }
@@ -307,6 +303,7 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
                             }
                         }
                     }
+                }
                 break;
             }
 
@@ -327,7 +324,7 @@ void MVKDescriptorSetLayoutBinding::push(MVKCommandEncoder* cmdEncoder,
 // If depth compare is required, but unavailable on the device, the sampler can only be used as an immutable sampler
 bool MVKDescriptorSetLayoutBinding::validate(MVKSampler* mvkSampler) {
 	if (mvkSampler->getRequiresConstExprSampler()) {
-		mvkSampler->reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdPushDescriptorSet/vkCmdPushDescriptorSetWithTemplate(): Depth texture samplers using a compare operation can only be used as immutable samplers on this device.");
+		mvkSampler->reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkCmdPushDescriptorSet/vkCmdPushDescriptorSetWithTemplate(): Tried to push an immutable sampler.");
 		return false;
 	}
 	return true;
@@ -437,6 +434,18 @@ void MVKDescriptorSetLayoutBinding::initMetalResourceIndexOffsets(MVKShaderStage
 				if ( !_device->_pMetalFeatures->arrayOfSamplers ) {
 					_layout->setConfigurationResult(reportError(VK_ERROR_FEATURE_NOT_PRESENT, "Device %s does not support arrays of samplers.", _device->getName()));
 				}
+                if ( pBinding->pImmutableSamplers ) {
+                    _layout->setConfigurationResult(reportError(VK_ERROR_FEATURE_NOT_PRESENT, "Sampler arrays contaning multi planar samplers are not supported."));
+                }
+			}
+
+            if ( pBinding->pImmutableSamplers ) {
+                for (uint32_t i = 0; i < pBinding->descriptorCount; i++) {
+                    uint8_t planeCount = ((MVKSampler*)pBinding->pImmutableSamplers[i])->getPlaneCount();
+                    if (planeCount > 1) {
+                        pDescSetCounts->textureIndex += planeCount - 1;
+                    }
+                }
             }
             break;
 
@@ -460,11 +469,15 @@ void MVKDescriptorSetLayoutBinding::initMetalResourceIndexOffsets(MVKShaderStage
         case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER:
         case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
         case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC:
-        case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
             pBindingIndexes->bufferIndex = pDescSetCounts->bufferIndex;
             pDescSetCounts->bufferIndex += pBinding->descriptorCount;
             break;
 
+        case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT:
+            pBindingIndexes->bufferIndex = pDescSetCounts->bufferIndex;
+            pDescSetCounts->bufferIndex += 1;
+            break;
+
         default:
             break;
     }
@@ -592,14 +605,14 @@ void MVKInlineUniformBlockDescriptor::bind(MVKCommandEncoder* cmdEncoder,
 										   MVKArrayRef<uint32_t> dynamicOffsets,
 										   uint32_t* pDynamicOffsetIndex) {
 	MVKMTLBufferBinding bb;
-
 	switch (descriptorType) {
 		case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT: {
-			bb.mtlBuffer = _mtlBuffer;
+            bb.mtlBytes = _buffer;
-			bb.size = _dataSize;
+            bb.size = _length;
+            bb.isInline = true;
             for (uint32_t i = kMVKShaderStageVertex; i < kMVKShaderStageMax; i++) {
                 if (stages[i]) {
-					bb.index = mtlIndexes.stages[i].bufferIndex + descriptorIndex;
+                    bb.index = mtlIndexes.stages[i].bufferIndex;
                     if (i == kMVKShaderStageCompute) {
                         if (cmdEncoder) { cmdEncoder->_computeResourcesState.bindBuffer(bb); }
                     } else {
@@ -617,24 +630,15 @@ void MVKInlineUniformBlockDescriptor::bind(MVKCommandEncoder* cmdEncoder,
 
 void MVKInlineUniformBlockDescriptor::write(MVKDescriptorSet* mvkDescSet,
                                             VkDescriptorType descriptorType,
-									   uint32_t srcIndex,
+                                            uint32_t dstOffset,
                                             size_t stride,
                                             const void* pData) {
 	switch (descriptorType) {
 		case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT: {
-			const auto& srcInlineUniformBlock = get<VkWriteDescriptorSetInlineUniformBlockEXT>(pData, stride, srcIndex);
+            const auto& pInlineUniformBlock = *(VkWriteDescriptorSetInlineUniformBlockEXT*)pData;
-			_dataSize = srcInlineUniformBlock.dataSize;
+            if (pInlineUniformBlock.pData && _buffer) {
-
+                memcpy(_buffer + dstOffset, pInlineUniformBlock.pData, pInlineUniformBlock.dataSize);
-			[_mtlBuffer release];
-			if (srcInlineUniformBlock.dataSize > 0) {
-				MTLResourceOptions mtlBuffOpts = MTLResourceStorageModeShared | MTLResourceCPUCacheModeDefaultCache;
-				_mtlBuffer = [mvkDescSet->getMTLDevice() newBufferWithBytes: srcInlineUniformBlock.pData
-																	 length: srcInlineUniformBlock.dataSize
-																	options:mtlBuffOpts];	// retained
-			} else {
-				_mtlBuffer = nil;
             }
-
 			break;
 		}
 
@@ -645,21 +649,15 @@ void MVKInlineUniformBlockDescriptor::write(MVKDescriptorSet* mvkDescSet,
 
 void MVKInlineUniformBlockDescriptor::read(MVKDescriptorSet* mvkDescSet,
                                            VkDescriptorType descriptorType,
-									  uint32_t dstIndex,
+                                           uint32_t srcOffset,
                                            VkDescriptorImageInfo* pImageInfo,
                                            VkDescriptorBufferInfo* pBufferInfo,
                                            VkBufferView* pTexelBufferView,
                                            VkWriteDescriptorSetInlineUniformBlockEXT* pInlineUniformBlock) {
 	switch (descriptorType) {
 		case VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT: {
-			auto& dstInlineUniformBlock = pInlineUniformBlock[dstIndex];
+			if (_buffer && pInlineUniformBlock->pData) {
-			void* pDstData = const_cast<void*>(dstInlineUniformBlock.pData);
+				memcpy((void*)pInlineUniformBlock->pData, _buffer + srcOffset, pInlineUniformBlock->dataSize);
-			void* pSrcData = _mtlBuffer.contents;
-			if (pSrcData && pDstData) {
-				memcpy(pDstData, pSrcData, _dataSize);
-				dstInlineUniformBlock.dataSize = _dataSize;
-			} else {
-				dstInlineUniformBlock.dataSize = 0;
             }
 			break;
 		}
@@ -669,10 +667,15 @@ void MVKInlineUniformBlockDescriptor::read(MVKDescriptorSet* mvkDescSet,
 	}
 }
 
+void MVKInlineUniformBlockDescriptor::setLayout(MVKDescriptorSetLayoutBinding* dslBinding, uint32_t index) {
+    _length = dslBinding->_info.descriptorCount;
+    _buffer = (uint8_t*)malloc(_length);
+}
+
 void MVKInlineUniformBlockDescriptor::reset() {
-	[_mtlBuffer release];
+    free(_buffer);
-	_mtlBuffer = nil;
+	_buffer = nullptr;
-	_dataSize = 0;
+    _length = 0;
 	MVKDescriptor::reset();
 }
 
@@ -688,22 +691,28 @@ void MVKImageDescriptor::bind(MVKCommandEncoder* cmdEncoder,
 							  MVKShaderResourceBinding& mtlIndexes,
 							  MVKArrayRef<uint32_t> dynamicOffsets,
 							  uint32_t* pDynamicOffsetIndex) {
-	MVKMTLTextureBinding tb;
-	MVKMTLBufferBinding bb;
 	switch (descriptorType) {
 		case VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE:
 		case VK_DESCRIPTOR_TYPE_STORAGE_IMAGE:
 		case VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT:
-		case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER: {
+		case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER:
+			break;
+
+		default:
+			return;
+	}
+    
+    uint8_t planeCount = (_mvkImageView) ? _mvkImageView->getPlaneCount() : 1;
+    for (uint8_t planeIndex = 0; planeIndex < planeCount; planeIndex++) {
+        MVKMTLTextureBinding tb;
+        MVKMTLBufferBinding bb;
+        
         if (_mvkImageView) {
-				tb.mtlTexture = _mvkImageView->getMTLTexture();
+            tb.mtlTexture = _mvkImageView->getMTLTexture(planeIndex);
-			}
-			if ((descriptorType == VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE || descriptorType == VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER) &&
-				tb.mtlTexture) {
-				tb.swizzle = _mvkImageView->getPackedSwizzle();
-			} else {
-				tb.swizzle = 0;
         }
+        tb.swizzle = ((descriptorType == VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE ||
+                       descriptorType == VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER) &&
+                       tb.mtlTexture) ? _mvkImageView->getPackedSwizzle() : 0;
         if (descriptorType == VK_DESCRIPTOR_TYPE_STORAGE_IMAGE && tb.mtlTexture) {
             id<MTLTexture> mtlTex = tb.mtlTexture;
             if (mtlTex.parentTexture) { mtlTex = mtlTex.parentTexture; }
@@ -713,14 +722,14 @@ void MVKImageDescriptor::bind(MVKCommandEncoder* cmdEncoder,
         }
         for (uint32_t i = kMVKShaderStageVertex; i < kMVKShaderStageMax; i++) {
             if (stages[i]) {
-					tb.index = mtlIndexes.stages[i].textureIndex + descriptorIndex;
+                tb.index = mtlIndexes.stages[i].textureIndex + descriptorIndex + planeIndex;
                 if (i == kMVKShaderStageCompute) {
                     if (cmdEncoder) { cmdEncoder->_computeResourcesState.bindTexture(tb); }
                 } else {
                     if (cmdEncoder) { cmdEncoder->_graphicsResourcesState.bindTexture(MVKShaderStage(i), tb); }
                 }
                 if (descriptorType == VK_DESCRIPTOR_TYPE_STORAGE_IMAGE) {
-						bb.index = mtlIndexes.stages[i].bufferIndex + descriptorIndex;
+                    bb.index = mtlIndexes.stages[i].bufferIndex + descriptorIndex + planeIndex;
                     if (i == kMVKShaderStageCompute) {
                         if (cmdEncoder) { cmdEncoder->_computeResourcesState.bindBuffer(bb); }
                     } else {
@@ -729,11 +738,6 @@ void MVKImageDescriptor::bind(MVKCommandEncoder* cmdEncoder,
                 }
             }
         }
-			break;
-		}
-
-		default:
-			break;
     }
 }
 
@@ -845,7 +849,7 @@ void MVKSamplerDescriptorMixin::write(MVKDescriptorSet* mvkDescSet,
 				const auto* pImgInfo = &get<VkDescriptorImageInfo>(pData, stride, srcIndex);
 				_mvkSampler = (MVKSampler*)pImgInfo->sampler;
 				if (_mvkSampler && _mvkSampler->getRequiresConstExprSampler()) {
-					_mvkSampler->reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkUpdateDescriptorSets(): Depth texture samplers using a compare operation can only be used as immutable samplers on this device.");
+					_mvkSampler->reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkUpdateDescriptorSets(): Tried to push an immutable sampler.");
 				}
 
 				if (_mvkSampler) { _mvkSampler->retain(); }

MoltenVK/MoltenVK/GPUObjects/MVKDescriptorSet.mm

@@ -209,13 +209,19 @@ void MVKDescriptorSet::write(const DescriptorAction* pDescriptorAction,
 							 const void* pData) {
 
 	VkDescriptorType descType = getDescriptorType(pDescriptorAction->dstBinding);
+	uint32_t descCnt = pDescriptorAction->descriptorCount;
+    if (descType == VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT) {
+        uint32_t dstStartIdx = _layout->getDescriptorIndex(pDescriptorAction->dstBinding, 0);
+        // For inline buffers we are using the index argument as dst offset not as src descIdx
+        _descriptors[dstStartIdx]->write(this, descType, pDescriptorAction->dstArrayElement, stride, pData);
+    } else {
         uint32_t dstStartIdx = _layout->getDescriptorIndex(pDescriptorAction->dstBinding,
         pDescriptorAction->dstArrayElement);
-	uint32_t descCnt = pDescriptorAction->descriptorCount;
         for (uint32_t descIdx = 0; descIdx < descCnt; descIdx++) {
             _descriptors[dstStartIdx + descIdx]->write(this, descType, descIdx, stride, pData);
         }
     }
+}
 
 // Create concrete implementations of the three variations of the write() function.
 template void MVKDescriptorSet::write<VkWriteDescriptorSet>(const VkWriteDescriptorSet* pDescriptorAction,
@@ -232,12 +238,18 @@ void MVKDescriptorSet::read(const VkCopyDescriptorSet* pDescriptorCopy,
 							VkWriteDescriptorSetInlineUniformBlockEXT* pInlineUniformBlock) {
 
 	VkDescriptorType descType = getDescriptorType(pDescriptorCopy->srcBinding);
+	uint32_t descCnt = pDescriptorCopy->descriptorCount;
+    if (descType == VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT) {
+        pInlineUniformBlock->dataSize = pDescriptorCopy->descriptorCount;
+        uint32_t srcStartIdx = _layout->getDescriptorIndex(pDescriptorCopy->srcBinding, 0);
+        // For inline buffers we are using the index argument as src offset not as dst descIdx
+        _descriptors[srcStartIdx]->read(this, descType, pDescriptorCopy->srcArrayElement, pImageInfo, pBufferInfo, pTexelBufferView, pInlineUniformBlock);
+    } else {
         uint32_t srcStartIdx = _layout->getDescriptorIndex(pDescriptorCopy->srcBinding,
                                                            pDescriptorCopy->srcArrayElement);
-	uint32_t descCnt = pDescriptorCopy->descriptorCount;
         for (uint32_t descIdx = 0; descIdx < descCnt; descIdx++) {
-		_descriptors[srcStartIdx + descIdx]->read(this, descType, descIdx, pImageInfo, pBufferInfo,
+            _descriptors[srcStartIdx + descIdx]->read(this, descType, descIdx, pImageInfo, pBufferInfo, pTexelBufferView, pInlineUniformBlock);
-												  pTexelBufferView, pInlineUniformBlock);
+        }
     }
 }
 
@@ -249,14 +261,22 @@ MVKDescriptorSet::MVKDescriptorSet(MVKDescriptorSetLayout* layout, MVKDescriptor
 	uint32_t bindCnt = (uint32_t)layout->_bindings.size();
 	for (uint32_t bindIdx = 0; bindIdx < bindCnt; bindIdx++) {
 		MVKDescriptorSetLayoutBinding* mvkDSLBind = &layout->_bindings[bindIdx];
+        MVKDescriptor* mvkDesc = nullptr;
+        if (mvkDSLBind->getDescriptorType() == VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT) {
+            setConfigurationResult(_pool->allocateDescriptor(mvkDSLBind->getDescriptorType(), &mvkDesc));
+            if ( !wasConfigurationSuccessful() ) { break; }
+
+            mvkDesc->setLayout(mvkDSLBind, 0);
+            _descriptors.push_back(mvkDesc);
+        } else {
             uint32_t descCnt = mvkDSLBind->getDescriptorCount();
             for (uint32_t descIdx = 0; descIdx < descCnt; descIdx++) {
-			MVKDescriptor* mvkDesc = nullptr;
                 setConfigurationResult(_pool->allocateDescriptor(mvkDSLBind->getDescriptorType(), &mvkDesc));
                 if ( !wasConfigurationSuccessful() ) { break; }
 
                 mvkDesc->setLayout(mvkDSLBind, descIdx);
                 _descriptors.push_back(mvkDesc);
+            }
         }
 		if ( !wasConfigurationSuccessful() ) { break; }
 	}

MoltenVK/MoltenVK/GPUObjects/MVKDevice.h

@@ -57,6 +57,7 @@ class MVKPipelineCache;
 class MVKPipelineLayout;
 class MVKPipeline;
 class MVKSampler;
+class MVKSamplerYcbcrConversion;
 class MVKDescriptorSetLayout;
 class MVKDescriptorPool;
 class MVKDescriptorUpdateTemplate;
@@ -521,6 +522,11 @@ public:
 	void destroySampler(MVKSampler* mvkSamp,
 						const VkAllocationCallbacks* pAllocator);
 
+	MVKSamplerYcbcrConversion* createSamplerYcbcrConversion(const VkSamplerYcbcrConversionCreateInfo* pCreateInfo,
+										                    const VkAllocationCallbacks* pAllocator);
+	void destroySamplerYcbcrConversion(MVKSamplerYcbcrConversion* mvkSampConv,
+								       const VkAllocationCallbacks* pAllocator);
+
 	MVKDescriptorSetLayout* createDescriptorSetLayout(const VkDescriptorSetLayoutCreateInfo* pCreateInfo,
 													  const VkAllocationCallbacks* pAllocator);
 	void destroyDescriptorSetLayout(MVKDescriptorSetLayout* mvkDSL,
@@ -652,6 +658,7 @@ public:
 	const VkPhysicalDeviceVariablePointerFeatures _enabledVarPtrFeatures;
 	const VkPhysicalDeviceFragmentShaderInterlockFeaturesEXT _enabledInterlockFeatures;
 	const VkPhysicalDeviceHostQueryResetFeaturesEXT _enabledHostQryResetFeatures;
+	const VkPhysicalDeviceSamplerYcbcrConversionFeatures _enabledSamplerYcbcrConversionFeatures;
 	const VkPhysicalDeviceScalarBlockLayoutFeaturesEXT _enabledScalarLayoutFeatures;
 	const VkPhysicalDeviceTexelBufferAlignmentFeaturesEXT _enabledTexelBuffAlignFeatures;
 	const VkPhysicalDeviceVertexAttributeDivisorFeaturesEXT _enabledVtxAttrDivFeatures;

MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm

@@ -114,6 +114,13 @@ void MVKPhysicalDevice::getFeatures(VkPhysicalDeviceFeatures2* features) {
 				hostQueryResetFeatures->hostQueryReset = true;
 				break;
 			}
+			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ROBUSTNESS_2_FEATURES_EXT: {
+				auto* robustness2Features = (VkPhysicalDeviceRobustness2FeaturesEXT*)next;
+				robustness2Features->robustBufferAccess2 = false;
+				robustness2Features->robustImageAccess2 = true;
+				robustness2Features->nullDescriptor = false;
+				break;
+			}
 			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SCALAR_BLOCK_LAYOUT_FEATURES_EXT: {
 				auto* scalarLayoutFeatures = (VkPhysicalDeviceScalarBlockLayoutFeaturesEXT*)next;
 				scalarLayoutFeatures->scalarBlockLayout = true;
@@ -139,6 +146,11 @@ void MVKPhysicalDevice::getFeatures(VkPhysicalDeviceFeatures2* features) {
 				portabilityFeatures->samplerMipLodBias = false;
 				break;
 			}
+			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_YCBCR_CONVERSION_FEATURES: {
+				auto* samplerYcbcrConvFeatures = (VkPhysicalDeviceSamplerYcbcrConversionFeatures*)next;
+				samplerYcbcrConvFeatures->samplerYcbcrConversion = true;
+				break;
+			}
 			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_INTEGER_FUNCTIONS_2_FEATURES_INTEL: {
 				auto* shaderIntFuncsFeatures = (VkPhysicalDeviceShaderIntegerFunctions2FeaturesINTEL*)next;
 				shaderIntFuncsFeatures->shaderIntegerFunctions2 = true;
@@ -181,6 +193,14 @@ void MVKPhysicalDevice::getProperties(VkPhysicalDeviceProperties2* properties) {
 				pushDescProps->maxPushDescriptors = _properties.limits.maxPerStageResources;
 				break;
 			}
+			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ROBUSTNESS_2_PROPERTIES_EXT: {
+				auto* robustness2Props = (VkPhysicalDeviceRobustness2PropertiesEXT*)next;
+				// This isn't implemented yet, but when it is, I expect that we'll wind up
+				// doing it manually.
+				robustness2Props->robustStorageBufferAccessSizeAlignment = 1;
+				robustness2Props->robustUniformBufferAccessSizeAlignment = 1;
+				break;
+			}
 			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TEXEL_BUFFER_ALIGNMENT_PROPERTIES_EXT: {
 				auto* texelBuffAlignProps = (VkPhysicalDeviceTexelBufferAlignmentPropertiesEXT*)next;
 				// Save the 'next' pointer; we'll unintentionally overwrite it
@@ -204,6 +224,15 @@ void MVKPhysicalDevice::getProperties(VkPhysicalDeviceProperties2* properties) {
 				portabilityProps->minVertexInputBindingStrideAlignment = 4;
 				break;
 			}
+            case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_INLINE_UNIFORM_BLOCK_PROPERTIES_EXT: {
+				auto* inlineUniformBlockProps = (VkPhysicalDeviceInlineUniformBlockPropertiesEXT*)next;
+				inlineUniformBlockProps->maxInlineUniformBlockSize = _metalFeatures.dynamicMTLBufferSize;
+                inlineUniformBlockProps->maxPerStageDescriptorInlineUniformBlocks = _properties.limits.maxPerStageDescriptorUniformBuffers;
+                inlineUniformBlockProps->maxPerStageDescriptorUpdateAfterBindInlineUniformBlocks = _properties.limits.maxPerStageDescriptorUniformBuffers;
+                inlineUniformBlockProps->maxDescriptorSetInlineUniformBlocks = _properties.limits.maxDescriptorSetUniformBuffers;
+                inlineUniformBlockProps->maxDescriptorSetUpdateAfterBindInlineUniformBlocks = _properties.limits.maxDescriptorSetUniformBuffers;
+				break;
+			}
 			default:
 				break;
 		}
@@ -429,6 +458,18 @@ VkResult MVKPhysicalDevice::getImageFormatProperties(const VkPhysicalDeviceImage
 		}
 	}
 
+    for (const auto* nextProps = (VkBaseInStructure*)pImageFormatProperties->pNext; nextProps; nextProps = nextProps->pNext) {
+        switch (nextProps->sType) {
+            case VK_STRUCTURE_TYPE_SAMPLER_YCBCR_CONVERSION_IMAGE_FORMAT_PROPERTIES: {
+                auto* samplerYcbcrConvProps = (VkSamplerYcbcrConversionImageFormatProperties*)nextProps;
+                samplerYcbcrConvProps->combinedImageSamplerDescriptorCount = _pixelFormats.getChromaSubsamplingPlaneCount(pImageFormatInfo->format);
+                break;
+            }
+            default:
+                break;
+        }
+    }
+
 	if ( !_pixelFormats.isSupported(pImageFormatInfo->format) ) { return VK_ERROR_FORMAT_NOT_SUPPORTED; }
 
 	if ( !getImageViewIsSupported(pImageFormatInfo) ) { return VK_ERROR_FORMAT_NOT_SUPPORTED; }
@@ -462,9 +503,9 @@ bool MVKPhysicalDevice::getImageViewIsSupported(const VkPhysicalDeviceImageForma
 						.baseArrayLayer = 0,
 						.layerCount = 1},
 				};
-				MTLPixelFormat mtlPixFmt;
+                MTLPixelFormat mtlPixFmt = _pixelFormats.getMTLPixelFormat(viewInfo.format);
 				bool useSwizzle;
-				return (MVKImageView::validateSwizzledMTLPixelFormat(&viewInfo, &_pixelFormats, this,
+				return (MVKImageView::validateSwizzledMTLPixelFormat(&viewInfo, this,
 																	 _metalFeatures.nativeTextureSwizzle,
 																	 _mvkInstance->getMoltenVKConfiguration()->fullImageViewSwizzle,
 																	 mtlPixFmt, useSwizzle) == VK_SUCCESS);
@@ -1356,6 +1397,7 @@ void MVKPhysicalDevice::initProperties() {
         uint32_t maxStorage = 0, maxUniform = 0;
         bool singleTexelStorage = true, singleTexelUniform = true;
         _pixelFormats.enumerateSupportedFormats({0, 0, VK_FORMAT_FEATURE_UNIFORM_TEXEL_BUFFER_BIT | VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_BIT}, true, [&](VkFormat vk) {
+            if ( _pixelFormats.getChromaSubsamplingComponentBits(vk) > 0 ) { return false; }    // Skip chroma subsampling formats
 			MTLPixelFormat mtlFmt = _pixelFormats.getMTLPixelFormat(vk);
 			if ( !mtlFmt ) { return false; }	// If format is invalid, avoid validation errors on MTLDevice format alignment calls
 
@@ -1535,7 +1577,7 @@ void MVKPhysicalDevice::initProperties() {
     _properties.limits.maxComputeWorkGroupCount[1] = kMVKUndefinedLargeUInt32;
     _properties.limits.maxComputeWorkGroupCount[2] = kMVKUndefinedLargeUInt32;
 
-    _properties.limits.maxDrawIndexedIndexValue = numeric_limits<uint32_t>::max();
+    _properties.limits.maxDrawIndexedIndexValue = numeric_limits<uint32_t>::max();	// Must be (2^32 - 1) to support fullDrawIndexUint32
     _properties.limits.maxDrawIndirectCount = kMVKUndefinedLargeUInt32;
 
     _properties.limits.maxClipDistances = kMVKUndefinedLargeUInt32;
@@ -2314,16 +2356,21 @@ MVKImage* MVKDevice::createImage(const VkImageCreateInfo* pCreateInfo,
 			break;
 		}
 	}
-	if (swapchainInfo) {
+    MVKImage* mvkImg = (swapchainInfo)
-		return (MVKImage*)addResource(new MVKPeerSwapchainImage(this, pCreateInfo, (MVKSwapchain*)swapchainInfo->swapchain, uint32_t(-1)));
+        ? new MVKPeerSwapchainImage(this, pCreateInfo, (MVKSwapchain*)swapchainInfo->swapchain, uint32_t(-1))
+        : new MVKImage(this, pCreateInfo);
+    for (auto& memoryBinding : mvkImg->_memoryBindings) {
+        addResource(memoryBinding);
     }
-	return (MVKImage*)addResource(new MVKImage(this, pCreateInfo));
+	return mvkImg;
 }
 
 void MVKDevice::destroyImage(MVKImage* mvkImg,
 							 const VkAllocationCallbacks* pAllocator) {
 	if (mvkImg) {
-		removeResource(mvkImg);
+		for (auto& memoryBinding : mvkImg->_memoryBindings) {
+            removeResource(memoryBinding);
+        }
 		mvkImg->destroy();
 	}
 }
@@ -2352,13 +2399,19 @@ MVKPresentableSwapchainImage* MVKDevice::createPresentableSwapchainImage(const V
 																		 MVKSwapchain* swapchain,
 																		 uint32_t swapchainIndex,
 																		 const VkAllocationCallbacks* pAllocator) {
-	return (MVKPresentableSwapchainImage*)addResource(new MVKPresentableSwapchainImage(this, pCreateInfo, swapchain, swapchainIndex));
+    MVKPresentableSwapchainImage* mvkImg = new MVKPresentableSwapchainImage(this, pCreateInfo, swapchain, swapchainIndex);
+    for (auto& memoryBinding : mvkImg->_memoryBindings) {
+        addResource(memoryBinding);
+    }
+    return mvkImg;
 }
 
 void MVKDevice::destroyPresentableSwapchainImage(MVKPresentableSwapchainImage* mvkImg,
 												 const VkAllocationCallbacks* pAllocator) {
 	if (mvkImg) {
-		removeResource(mvkImg);
+		for (auto& memoryBinding : mvkImg->_memoryBindings) {
+            removeResource(memoryBinding);
+        }
 		mvkImg->destroy();
 	}
 }
@@ -2522,6 +2575,16 @@ void MVKDevice::destroySampler(MVKSampler* mvkSamp,
 	if (mvkSamp) { mvkSamp->destroy(); }
 }
 
+MVKSamplerYcbcrConversion* MVKDevice::createSamplerYcbcrConversion(const VkSamplerYcbcrConversionCreateInfo* pCreateInfo,
+																   const VkAllocationCallbacks* pAllocator) {
+	return new MVKSamplerYcbcrConversion(this, pCreateInfo);
+}
+
+void MVKDevice::destroySamplerYcbcrConversion(MVKSamplerYcbcrConversion* mvkSampConv,
+											  const VkAllocationCallbacks* pAllocator) {
+	mvkSampConv->destroy();
+}
+
 MVKDescriptorSetLayout* MVKDevice::createDescriptorSetLayout(const VkDescriptorSetLayoutCreateInfo* pCreateInfo,
 															 const VkAllocationCallbacks* pAllocator) {
 	return new MVKDescriptorSetLayout(this, pCreateInfo);
@@ -2773,6 +2836,7 @@ MVKDevice::MVKDevice(MVKPhysicalDevice* physicalDevice, const VkDeviceCreateInfo
 	_enabledVarPtrFeatures(),
 	_enabledInterlockFeatures(),
 	_enabledHostQryResetFeatures(),
+	_enabledSamplerYcbcrConversionFeatures(),
 	_enabledScalarLayoutFeatures(),
 	_enabledTexelBuffAlignFeatures(),
 	_enabledVtxAttrDivFeatures(),
@@ -2934,6 +2998,7 @@ void MVKDevice::enableFeatures(const VkDeviceCreateInfo* pCreateInfo) {
 	mvkClear(&_enabledVarPtrFeatures);
 	mvkClear(&_enabledInterlockFeatures);
 	mvkClear(&_enabledHostQryResetFeatures);
+	mvkClear(&_enabledSamplerYcbcrConversionFeatures);
 	mvkClear(&_enabledScalarLayoutFeatures);
 	mvkClear(&_enabledTexelBuffAlignFeatures);
 	mvkClear(&_enabledVtxAttrDivFeatures);
@@ -2956,9 +3021,13 @@ void MVKDevice::enableFeatures(const VkDeviceCreateInfo* pCreateInfo) {
 	pdScalarLayoutFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SCALAR_BLOCK_LAYOUT_FEATURES_EXT;
 	pdScalarLayoutFeatures.pNext = &pdTexelBuffAlignFeatures;
 
+	VkPhysicalDeviceSamplerYcbcrConversionFeatures pdSamplerYcbcrConversionFeatures;
+	pdSamplerYcbcrConversionFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_YCBCR_CONVERSION_FEATURES;
+	pdSamplerYcbcrConversionFeatures.pNext = &pdScalarLayoutFeatures;
+
 	VkPhysicalDeviceHostQueryResetFeaturesEXT pdHostQryResetFeatures;
 	pdHostQryResetFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_HOST_QUERY_RESET_FEATURES_EXT;
-	pdHostQryResetFeatures.pNext = &pdScalarLayoutFeatures;
+	pdHostQryResetFeatures.pNext = &pdSamplerYcbcrConversionFeatures;
 
 	VkPhysicalDeviceFragmentShaderInterlockFeaturesEXT pdInterlockFeatures;
 	pdInterlockFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADER_INTERLOCK_FEATURES_EXT;
@@ -3055,6 +3124,13 @@ void MVKDevice::enableFeatures(const VkDeviceCreateInfo* pCreateInfo) {
 							   &pdHostQryResetFeatures.hostQueryReset, 1);
 				break;
 			}
+			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_YCBCR_CONVERSION_FEATURES: {
+				auto* requestedFeatures = (VkPhysicalDeviceSamplerYcbcrConversionFeatures*)next;
+				enableFeatures(&_enabledSamplerYcbcrConversionFeatures.samplerYcbcrConversion,
+							   &requestedFeatures->samplerYcbcrConversion,
+							   &pdSamplerYcbcrConversionFeatures.samplerYcbcrConversion, 1);
+				break;
+			}
 			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SCALAR_BLOCK_LAYOUT_FEATURES_EXT: {
 				auto* requestedFeatures = (VkPhysicalDeviceScalarBlockLayoutFeaturesEXT*)next;
 				enableFeatures(&_enabledScalarLayoutFeatures.scalarBlockLayout,

MoltenVK/MoltenVK/GPUObjects/MVKDeviceMemory.h

@@ -24,8 +24,7 @@
 
 #import <Metal/Metal.h>
 
-class MVKBuffer;
+class MVKImageMemoryBinding;
-class MVKImage;
 
 // TODO: These are inoperable placeholders until VK_KHR_external_memory_metal defines them properly
 static const VkExternalMemoryHandleTypeFlagBits VK_EXTERNAL_MEMORY_HANDLE_TYPE_MTLBUFFER_BIT_KHR = VK_EXTERNAL_MEMORY_HANDLE_TYPE_FLAG_BITS_MAX_ENUM;
@@ -34,6 +33,12 @@ static const VkExternalMemoryHandleTypeFlagBits VK_EXTERNAL_MEMORY_HANDLE_TYPE_M
 
 #pragma mark MVKDeviceMemory
 
+typedef struct {
+	VkDeviceSize offset = 0;
+	VkDeviceSize size = 0;
+} MVKMappedMemoryRange;
+
+
 /** Represents a Vulkan device-space memory allocation. */
 class MVKDeviceMemory : public MVKVulkanAPIDeviceObject {
 
@@ -78,6 +83,16 @@ public:
 	/** Unmaps a previously mapped memory range. */
 	void unmap();
 
+	/**
+	 * If this device memory is currently mapped to host memory, returns the range within
+	 * this device memory that is currently mapped to host memory, or returns {0,0} if
+	 * this device memory is not currently mapped to host memory.
+	 */
+	inline const MVKMappedMemoryRange& getMappedRange() { return _mappedRange; }
+
+	/** Returns whether this device memory is currently mapped to host memory. */
+	bool isMapped() { return _mappedRange.size > 0; }
+
 	/**
 	 * If this memory is host-visible, the specified memory range is flushed to the device.
 	 * Normally, flushing will only occur if the device memory is non-coherent, but flushing
@@ -131,15 +146,15 @@ public:
     ~MVKDeviceMemory() override;
 
 protected:
-	friend MVKBuffer;
+	friend class MVKBuffer;
-	friend MVKImage;
+    friend class MVKImageMemoryBinding;
 
 	void propagateDebugName() override;
 	VkDeviceSize adjustMemorySize(VkDeviceSize size, VkDeviceSize offset);
 	VkResult addBuffer(MVKBuffer* mvkBuff);
 	void removeBuffer(MVKBuffer* mvkBuff);
-	VkResult addImage(MVKImage* mvkImg);
+	VkResult addImageMemoryBinding(MVKImageMemoryBinding* mvkImg);
-	void removeImage(MVKImage* mvkImg);
+	void removeImageMemoryBinding(MVKImageMemoryBinding* mvkImg);
 	bool ensureMTLHeap();
 	bool ensureMTLBuffer();
 	bool ensureHostMemory();
@@ -148,16 +163,14 @@ protected:
 	void initExternalMemory(VkExternalMemoryHandleTypeFlags handleTypes);
 
 	MVKSmallVector<MVKBuffer*, 4> _buffers;
-	MVKSmallVector<MVKImage*, 4> _images;
+	MVKSmallVector<MVKImageMemoryBinding*, 4> _imageMemoryBindings;
 	std::mutex _rezLock;
     VkDeviceSize _allocationSize = 0;
-	VkDeviceSize _mapOffset = 0;
+	MVKMappedMemoryRange _mappedRange;
-	VkDeviceSize _mapSize = 0;
 	id<MTLBuffer> _mtlBuffer = nil;
 	id<MTLHeap> _mtlHeap = nil;
 	void* _pMemory = nullptr;
 	void* _pHostMemory = nullptr;
-	bool _isMapped = false;
 	bool _isDedicated = false;
 	MTLStorageMode _mtlStorageMode;
 	MTLCPUCacheMode _mtlCPUCacheMode;

MoltenVK/MoltenVK/GPUObjects/MVKDeviceMemory.mm

@@ -43,7 +43,7 @@ VkResult MVKDeviceMemory::map(VkDeviceSize offset, VkDeviceSize size, VkMemoryMa
 		return reportError(VK_ERROR_MEMORY_MAP_FAILED, "Private GPU-only memory cannot be mapped to host memory.");
 	}
 
-	if (_isMapped) {
+	if (isMapped()) {
 		return reportError(VK_ERROR_MEMORY_MAP_FAILED, "Memory is already mapped. Call vkUnmapMemory() first.");
 	}
 
@@ -51,9 +51,8 @@ VkResult MVKDeviceMemory::map(VkDeviceSize offset, VkDeviceSize size, VkMemoryMa
 		return reportError(VK_ERROR_OUT_OF_HOST_MEMORY, "Could not allocate %llu bytes of host-accessible device memory.", _allocationSize);
 	}
 
-	_mapOffset = offset;
+	_mappedRange.offset = offset;
-	_mapSize = adjustMemorySize(size, offset);
+	_mappedRange.size = adjustMemorySize(size, offset);
-	_isMapped = true;
 
 	*ppData = (void*)((uintptr_t)_pMemory + offset);
 
@@ -65,17 +64,16 @@ VkResult MVKDeviceMemory::map(VkDeviceSize offset, VkDeviceSize size, VkMemoryMa
 
 void MVKDeviceMemory::unmap() {
 
-	if ( !_isMapped ) {
+	if ( !isMapped() ) {
 		reportError(VK_ERROR_MEMORY_MAP_FAILED, "Memory is not mapped. Call vkMapMemory() first.");
 		return;
 	}
 
 	// Coherent memory does not require flushing by app, so we must flush now.
-	flushToDevice(_mapOffset, _mapSize, isMemoryHostCoherent());
+	flushToDevice(_mappedRange.offset, _mappedRange.size, isMemoryHostCoherent());
 
-	_mapOffset = 0;
+	_mappedRange.offset = 0;
-	_mapSize = 0;
+	_mappedRange.size = 0;
-	_isMapped = false;
 }
 
 VkResult MVKDeviceMemory::flushToDevice(VkDeviceSize offset, VkDeviceSize size, bool evenIfCoherent) {
@@ -92,7 +90,7 @@ VkResult MVKDeviceMemory::flushToDevice(VkDeviceSize offset, VkDeviceSize size,
 		// If we have an MTLHeap object, there's no need to sync memory manually between images and the buffer.
 		if (!_mtlHeap) {
 			lock_guard<mutex> lock(_rezLock);
-			for (auto& img : _images) { img->flushToDevice(offset, memSize); }
+			for (auto& img : _imageMemoryBindings) { img->flushToDevice(offset, memSize); }
 			for (auto& buf : _buffers) { buf->flushToDevice(offset, memSize); }
 		}
 	}
@@ -107,7 +105,7 @@ VkResult MVKDeviceMemory::pullFromDevice(VkDeviceSize offset,
     VkDeviceSize memSize = adjustMemorySize(size, offset);
 	if (memSize > 0 && isMemoryHostAccessible() && (evenIfCoherent || !isMemoryHostCoherent()) && !_mtlHeap) {
 		lock_guard<mutex> lock(_rezLock);
-        for (auto& img : _images) { img->pullFromDevice(offset, memSize); }
+        for (auto& img : _imageMemoryBindings) { img->pullFromDevice(offset, memSize); }
         for (auto& buf : _buffers) { buf->pullFromDevice(offset, memSize); }
 
 #if MVK_MACOS
@@ -152,23 +150,23 @@ void MVKDeviceMemory::removeBuffer(MVKBuffer* mvkBuff) {
 	mvkRemoveAllOccurances(_buffers, mvkBuff);
 }
 
-VkResult MVKDeviceMemory::addImage(MVKImage* mvkImg) {
+VkResult MVKDeviceMemory::addImageMemoryBinding(MVKImageMemoryBinding* mvkImg) {
 	lock_guard<mutex> lock(_rezLock);
 
 	// If a dedicated alloc, ensure this image is the one and only image
 	// I am dedicated to.
-	if (_isDedicated && (_images.empty() || _images[0] != mvkImg) ) {
+	if (_isDedicated && (_imageMemoryBindings.empty() || _imageMemoryBindings[0] != mvkImg) ) {
 		return reportError(VK_ERROR_OUT_OF_DEVICE_MEMORY, "Could not bind VkImage %p to a VkDeviceMemory dedicated to resource %p. A dedicated allocation may only be used with the resource it was dedicated to.", mvkImg, getDedicatedResource() );
 	}
 
-	if (!_isDedicated) { _images.push_back(mvkImg); }
+	if (!_isDedicated) { _imageMemoryBindings.push_back(mvkImg); }
 
 	return VK_SUCCESS;
 }
 
-void MVKDeviceMemory::removeImage(MVKImage* mvkImg) {
+void MVKDeviceMemory::removeImageMemoryBinding(MVKImageMemoryBinding* mvkImg) {
 	lock_guard<mutex> lock(_rezLock);
-	mvkRemoveAllOccurances(_images, mvkImg);
+	mvkRemoveAllOccurances(_imageMemoryBindings, mvkImg);
 }
 
 // Ensures that this instance is backed by a MTLHeap object,
@@ -266,7 +264,7 @@ void MVKDeviceMemory::freeHostMemory() {
 
 MVKResource* MVKDeviceMemory::getDedicatedResource() {
 	MVKAssert(_isDedicated, "This method should only be called on dedicated allocations!");
-	return _buffers.empty() ? (MVKResource*)_images[0] : (MVKResource*)_buffers[0];
+	return _buffers.empty() ? (MVKResource*)_imageMemoryBindings[0] : (MVKResource*)_buffers[0];
 }
 
 MVKDeviceMemory::MVKDeviceMemory(MVKDevice* device,
@@ -319,7 +317,9 @@ MVKDeviceMemory::MVKDeviceMemory(MVKDevice* device,
 			}
 		}
 #endif
-		_images.push_back((MVKImage*)dedicatedImage);
+        for (auto& memoryBinding : ((MVKImage*)dedicatedImage)->_memoryBindings) {
+            _imageMemoryBindings.push_back(memoryBinding);
+        }
 		return;
 	}
 
@@ -367,7 +367,7 @@ MVKDeviceMemory::~MVKDeviceMemory() {
     // to allow the resource to callback to remove itself from the collection.
     auto buffCopies = _buffers;
     for (auto& buf : buffCopies) { buf->bindDeviceMemory(nullptr, 0); }
-	auto imgCopies = _images;
+	auto imgCopies = _imageMemoryBindings;
 	for (auto& img : imgCopies) { img->bindDeviceMemory(nullptr, 0); }
 
 	[_mtlBuffer release];

MoltenVK/MoltenVK/GPUObjects/MVKImage.h

@@ -28,11 +28,15 @@
 
 #import <IOSurface/IOSurfaceRef.h>
 
+class MVKImage;
 class MVKImageView;
 class MVKSwapchain;
 class MVKCommandEncoder;
 
 
+#pragma mark -
+#pragma mark MVKImagePlane
+
 /** Tracks the state of an image subresource.  */
 typedef struct {
     VkImageSubresource subresource;
@@ -40,12 +44,116 @@ typedef struct {
     VkImageLayout layoutState;
 } MVKImageSubresource;
 
+class MVKImagePlane : public MVKBaseObject {
+
+public:
+
+	/** Returns the Vulkan API opaque object controlling this object. */
+	MVKVulkanAPIObject* getVulkanAPIObject() override;
+
+	/** Returns the Metal texture underlying this image plane. */
+    id<MTLTexture> getMTLTexture();
+
+    /** Returns a Metal texture that interprets the pixels in the specified format. */
+    id<MTLTexture> getMTLTexture(MTLPixelFormat mtlPixFmt);
+
+    void releaseMTLTexture();
+
+    ~MVKImagePlane();
+
+protected:
+	friend class MVKImageMemoryBinding;
+	friend MVKImage;
+
+    MTLTextureDescriptor* newMTLTextureDescriptor();
+    void initSubresources(const VkImageCreateInfo* pCreateInfo);
+    MVKImageSubresource* getSubresource(uint32_t mipLevel, uint32_t arrayLayer);
+    void updateMTLTextureContent(MVKImageSubresource& subresource, VkDeviceSize offset, VkDeviceSize size);
+    void getMTLTextureContent(MVKImageSubresource& subresource, VkDeviceSize offset, VkDeviceSize size);
+	bool overlaps(VkSubresourceLayout& imgLayout, VkDeviceSize offset, VkDeviceSize size);
+    void propagateDebugName();
+    MVKImageMemoryBinding* getMemoryBinding() const;
+	void applyImageMemoryBarrier(VkPipelineStageFlags srcStageMask,
+								 VkPipelineStageFlags dstStageMask,
+								 MVKPipelineBarrier& barrier,
+								 MVKCommandEncoder* cmdEncoder,
+								 MVKCommandUse cmdUse);
+	void pullFromDeviceOnCompletion(MVKCommandEncoder* cmdEncoder,
+									MVKImageSubresource& subresource,
+									const MVKMappedMemoryRange& mappedRange);
+
+    MVKImagePlane(MVKImage* image, uint8_t planeIndex);
+
+    MVKImage* _image;
+    uint8_t _planeIndex;
+    VkExtent2D _blockTexelSize;
+    uint32_t _bytesPerBlock;
+    MTLPixelFormat _mtlPixFmt;
+    id<MTLTexture> _mtlTexture;
+    std::unordered_map<NSUInteger, id<MTLTexture>> _mtlTextureViews;
+    MVKSmallVector<MVKImageSubresource, 1> _subresources;
+};
+
+
+#pragma mark -
+#pragma mark MVKImageMemoryBinding
+
+class MVKImageMemoryBinding : public MVKResource {
+
+public:
+    
+    /** Returns the Vulkan type of this object. */
+    VkObjectType getVkObjectType() override { return VK_OBJECT_TYPE_UNKNOWN; }
+
+    /** Returns the debug report object type of this object. */
+    VkDebugReportObjectTypeEXT getVkDebugReportObjectType() override { return VK_DEBUG_REPORT_OBJECT_TYPE_UNKNOWN_EXT; }
+
+    /** Returns the memory requirements of this resource by populating the specified structure. */
+    VkResult getMemoryRequirements(VkMemoryRequirements* pMemoryRequirements);
+
+    /** Returns the memory requirements of this resource by populating the specified structure. */
+    VkResult getMemoryRequirements(const void* pInfo, VkMemoryRequirements2* pMemoryRequirements);
+
+    /** Binds this resource to the specified offset within the specified memory allocation. */
+    VkResult bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize memOffset) override;
+
+    /** Applies the specified global memory barrier. */
+    void applyMemoryBarrier(VkPipelineStageFlags srcStageMask,
+                            VkPipelineStageFlags dstStageMask,
+                            MVKPipelineBarrier& barrier,
+                            MVKCommandEncoder* cmdEncoder,
+                            MVKCommandUse cmdUse) override;
+
+    ~MVKImageMemoryBinding();
+
+protected:
+    friend MVKDeviceMemory;
+    friend MVKImagePlane;
+    friend MVKImage;
+
+    void propagateDebugName() override;
+    bool needsHostReadSync(VkPipelineStageFlags srcStageMask,
+                           VkPipelineStageFlags dstStageMask,
+                           MVKPipelineBarrier& barrier);
+    bool shouldFlushHostMemory();
+    VkResult flushToDevice(VkDeviceSize offset, VkDeviceSize size);
+    VkResult pullFromDevice(VkDeviceSize offset, VkDeviceSize size);
+    uint8_t beginPlaneIndex() const;
+    uint8_t endPlaneIndex() const;
+
+    MVKImageMemoryBinding(MVKDevice* device, MVKImage* image, uint8_t planeIndex);
+
+    MVKImage* _image;
+    uint8_t _planeIndex;
+    bool _usesTexelBuffer;
+};
+
 
 #pragma mark -
 #pragma mark MVKImage
 
 /** Represents a Vulkan image. */
-class MVKImage : public MVKResource {
+class MVKImage : public MVKVulkanAPIDeviceObject {
 
 public:
 
@@ -55,6 +163,9 @@ public:
 	/** Returns the debug report object type of this object. */
 	VkDebugReportObjectTypeEXT getVkDebugReportObjectType() override { return VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_EXT; }
 
+    /** Returns the plane index of VkImageAspectFlags. */
+    static uint8_t getPlaneFromVkImageAspectFlags(VkImageAspectFlags aspectMask);
+
 	/**
 	 * Returns the Vulkan image type of this image.
 	 * This may be different than the value originally specified for the image
@@ -63,7 +174,7 @@ public:
     VkImageType getImageType();
 
     /** Returns the Vulkan image format of this image. */
-    VkFormat getVkFormat();
+    VkFormat getVkFormat() { return _vkFormat; };
 
 	/** Returns whether this image has a depth or stencil format. */
 	bool getIsDepthStencil();
@@ -81,7 +192,7 @@ public:
 	 * Returns the 3D extent of this image at the specified mipmap level. 
 	 * For 2D or cube images, the Z component will be 1.
 	 */
-	VkExtent3D getExtent3D(uint32_t mipLevel);
+	VkExtent3D getExtent3D(uint8_t planeIndex, uint32_t mipLevel);
 
 	/** Returns the number of mipmap levels in this image. */
 	inline uint32_t getMipLevelCount() { return _mipLevels; }
@@ -101,7 +212,7 @@ public:
       * For compressed formats, this is the number of bytes in a row of blocks, which
       * will typically span more than one row of texels.
 	  */
-	VkDeviceSize getBytesPerRow(uint32_t mipLevel);
+	VkDeviceSize getBytesPerRow(uint8_t planeIndex, uint32_t mipLevel);
 
 	/**
 	 * Returns the number of bytes per image layer (for cube, array, or 3D images) 
@@ -109,7 +220,10 @@ public:
 	 * of bytes per row (as returned by the getBytesPerRow() function, multiplied by 
 	 * the height of each 2D image.
 	 */
-	VkDeviceSize getBytesPerLayer(uint32_t mipLevel);
+	VkDeviceSize getBytesPerLayer(uint8_t planeIndex, uint32_t mipLevel);
+    
+    /** Returns the number of planes of this image view. */
+    inline uint8_t getPlaneCount() { return _planes.size(); }
 
 	/** Populates the specified layout for the specified sub-resource. */
 	VkResult getSubresourceLayout(const VkImageSubresource* pSubresource,
@@ -122,24 +236,17 @@ public:
 #pragma mark Resource memory
 
 	/** Returns the memory requirements of this resource by populating the specified structure. */
-	VkResult getMemoryRequirements(VkMemoryRequirements* pMemoryRequirements) override;
+	VkResult getMemoryRequirements(VkMemoryRequirements* pMemoryRequirements, uint8_t planeIndex);
 
 	/** Returns the memory requirements of this resource by populating the specified structure. */
-	VkResult getMemoryRequirements(const void* pInfo, VkMemoryRequirements2* pMemoryRequirements) override;
+	VkResult getMemoryRequirements(const void* pInfo, VkMemoryRequirements2* pMemoryRequirements);
 
 	/** Binds this resource to the specified offset within the specified memory allocation. */
-	VkResult bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize memOffset) override;
+	virtual VkResult bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize memOffset, uint8_t planeIndex);
 
 	/** Binds this resource to the specified offset within the specified memory allocation. */
 	virtual VkResult bindDeviceMemory2(const VkBindImageMemoryInfo* pBindInfo);
 
-	/** Applies the specified global memory barrier. */
-	void applyMemoryBarrier(VkPipelineStageFlags srcStageMask,
-							VkPipelineStageFlags dstStageMask,
-							MVKPipelineBarrier& barrier,
-							MVKCommandEncoder* cmdEncoder,
-							MVKCommandUse cmdUse) override;
-
 	/** Applies the specified image memory barrier. */
 	void applyImageMemoryBarrier(VkPipelineStageFlags srcStageMask,
 								 VkPipelineStageFlags dstStageMask,
@@ -150,10 +257,10 @@ public:
 #pragma mark Metal
 
 	/** Returns the Metal texture underlying this image. */
-	virtual id<MTLTexture> getMTLTexture();
+	virtual id<MTLTexture> getMTLTexture(uint8_t planeIndex);
 
 	/** Returns a Metal texture that interprets the pixels in the specified format. */
-	id<MTLTexture> getMTLTexture(MTLPixelFormat mtlPixFmt);
+	id<MTLTexture> getMTLTexture(uint8_t planeIndex, MTLPixelFormat mtlPixFmt);
 
     /**
      * Sets this image to use the specified MTLTexture.
@@ -163,7 +270,7 @@ public:
      *
      * If a MTLTexture has already been created for this image, it will be destroyed.
      */
-    VkResult setMTLTexture(id<MTLTexture> mtlTexture);
+    VkResult setMTLTexture(uint8_t planeIndex, id<MTLTexture> mtlTexture);
 
     /**
      * Indicates that this VkImage should use an IOSurface to underlay the Metal texture.
@@ -189,7 +296,7 @@ public:
     IOSurfaceRef getIOSurface();
 
 	/** Returns the Metal pixel format of this image. */
-	inline MTLPixelFormat getMTLPixelFormat() { return _mtlPixelFormat; }
+	inline MTLPixelFormat getMTLPixelFormat(uint8_t planeIndex) { return _planes[planeIndex]->_mtlPixFmt; }
 
 	/** Returns the Metal texture type of this image. */
 	inline MTLTextureType getMTLTextureType() { return _mtlTextureType; }
@@ -212,12 +319,6 @@ public:
 	/** Returns the Metal CPU cache mode used by this image. */
 	MTLCPUCacheMode getMTLCPUCacheMode();
 
-	/** 
-	 * Returns whether the memory is automatically coherent between device and host. 
-	 * On macOS, this always returns false because textures cannot use Shared storage mode.
-	 */
-	bool isMemoryHostCoherent();
-
 #pragma mark Construction
 
 	MVKImage(MVKDevice* device, const VkImageCreateInfo* pCreateInfo);
@@ -225,50 +326,37 @@ public:
 	~MVKImage() override;
 
 protected:
-	friend class MVKDeviceMemory;
+    friend MVKDeviceMemory;
-	friend class MVKImageView;
+    friend MVKDevice;
-	using MVKResource::needsHostReadSync;
+    friend MVKImageMemoryBinding;
+    friend MVKImagePlane;
+    friend class MVKImageViewPlane;
+	friend MVKImageView;
 
 	void propagateDebugName() override;
-	MVKImageSubresource* getSubresource(uint32_t mipLevel, uint32_t arrayLayer);
 	void validateConfig(const VkImageCreateInfo* pCreateInfo, bool isAttachment);
 	VkSampleCountFlagBits validateSamples(const VkImageCreateInfo* pCreateInfo, bool isAttachment);
 	uint32_t validateMipLevels(const VkImageCreateInfo* pCreateInfo, bool isAttachment);
 	bool validateLinear(const VkImageCreateInfo* pCreateInfo, bool isAttachment);
-	bool validateUseTexelBuffer();
-	void initSubresources(const VkImageCreateInfo* pCreateInfo);
-	void initSubresourceLayout(MVKImageSubresource& imgSubRez);
 	void initExternalMemory(VkExternalMemoryHandleTypeFlags handleTypes);
-	id<MTLTexture> newMTLTexture();
-	void releaseMTLTexture();
     void releaseIOSurface();
-	MTLTextureDescriptor* newMTLTextureDescriptor();
-    void updateMTLTextureContent(MVKImageSubresource& subresource, VkDeviceSize offset, VkDeviceSize size);
-    void getMTLTextureContent(MVKImageSubresource& subresource, VkDeviceSize offset, VkDeviceSize size);
-	bool shouldFlushHostMemory();
-	VkResult flushToDevice(VkDeviceSize offset, VkDeviceSize size);
-	VkResult pullFromDevice(VkDeviceSize offset, VkDeviceSize size);
-	bool needsHostReadSync(VkPipelineStageFlags srcStageMask,
-						   VkPipelineStageFlags dstStageMask,
-						   MVKPipelineBarrier& barrier);
 
-	MVKSmallVector<MVKImageSubresource, 1> _subresources;
+    MVKSmallVector<MVKImageMemoryBinding*, 3> _memoryBindings;
-	std::unordered_map<NSUInteger, id<MTLTexture>> _mtlTextureViews;
+    MVKSmallVector<MVKImagePlane*, 3> _planes;
     VkExtent3D _extent;
     uint32_t _mipLevels;
     uint32_t _arrayLayers;
     VkSampleCountFlagBits _samples;
     VkImageUsageFlags _usage;
-	MTLPixelFormat _mtlPixelFormat;
+    VkFormat _vkFormat;
 	MTLTextureType _mtlTextureType;
-    id<MTLTexture> _mtlTexture;
     std::mutex _lock;
     IOSurfaceRef _ioSurface;
 	VkDeviceSize _rowByteAlignment;
     bool _isDepthStencilAttachment;
 	bool _canSupportMTLTextureView;
     bool _hasExpectedTexelSize;
-	bool _usesTexelBuffer;
+    bool _hasChromaSubsampling;
 	bool _isLinear;
 	bool _is3DCompressed;
 	bool _isAliasable;
@@ -284,12 +372,12 @@ class MVKSwapchainImage : public MVKImage {
 public:
 
 	/** Binds this resource to the specified offset within the specified memory allocation. */
-	VkResult bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize memOffset) override;
+	VkResult bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize memOffset, uint8_t planeIndex) override;
 
 #pragma mark Metal
 
 	/** Returns the Metal texture used by the CAMetalDrawable underlying this image. */
-	id<MTLTexture> getMTLTexture() override;
+	id<MTLTexture> getMTLTexture(uint8_t planeIndex) override;
 
 
 #pragma mark Construction
@@ -401,6 +489,37 @@ protected:
 };
 
 
+#pragma mark -
+#pragma mark MVKImageViewPlane
+
+class MVKImageViewPlane : public MVKBaseDeviceObject {
+
+	/** Returns the Vulkan API opaque object controlling this object. */
+	MVKVulkanAPIObject* getVulkanAPIObject() override;
+
+public:
+    /** Returns the Metal texture underlying this image view. */
+    id<MTLTexture> getMTLTexture();
+
+    void releaseMTLTexture();
+
+    ~MVKImageViewPlane();
+
+protected:
+    void propagateDebugName();
+    id<MTLTexture> newMTLTexture();
+    MVKImageViewPlane(MVKImageView* imageView, uint8_t planeIndex, MTLPixelFormat mtlPixFmt, const VkImageViewCreateInfo* pCreateInfo);
+
+    friend MVKImageView;
+    MVKImageView* _imageView;
+    uint8_t _planeIndex;
+    MTLPixelFormat _mtlPixFmt;
+    uint32_t _packedSwizzle;
+    id<MTLTexture> _mtlTexture;
+    bool _useMTLTextureView;
+};
+
+
 #pragma mark -
 #pragma mark MVKImageView
 
@@ -418,17 +537,20 @@ public:
 #pragma mark Metal
 
 	/** Returns the Metal texture underlying this image view. */
-	id<MTLTexture> getMTLTexture();
+	id<MTLTexture> getMTLTexture(uint8_t planeIndex) { return _planes[planeIndex]->getMTLTexture(); }
 
 	/** Returns the Metal pixel format of this image view. */
-	inline MTLPixelFormat getMTLPixelFormat() { return _mtlPixelFormat; }
+	inline MTLPixelFormat getMTLPixelFormat(uint8_t planeIndex) { return _planes[planeIndex]->_mtlPixFmt; }
+    
+    /** Returns the packed component swizzle of this image view. */
+    inline uint32_t getPackedSwizzle() { return _planes[0]->_packedSwizzle; }
+    
+    /** Returns the number of planes of this image view. */
+    inline uint8_t getPlaneCount() { return _planes.size(); }
 
 	/** Returns the Metal texture type of this image view. */
 	inline MTLTextureType getMTLTextureType() { return _mtlTextureType; }
 
-	/** Returns the packed component swizzle of this image view. */
-	inline uint32_t getPackedSwizzle() { return _packedSwizzle; }
-
 	/**
 	 * Populates the texture of the specified render pass descriptor
 	 * with the Metal texture underlying this image.
@@ -458,7 +580,6 @@ public:
 	 * This is a static function that can be used to validate image view formats prior to creating one.
 	 */
 	static VkResult validateSwizzledMTLPixelFormat(const VkImageViewCreateInfo* pCreateInfo,
-												   MVKPixelFormats* mvkPixFmts,
 												   MVKVulkanAPIObject* apiObject,
 												   bool hasNativeSwizzleSupport,
 												   bool hasShaderSwizzleSupport,
@@ -472,23 +593,56 @@ public:
 				 const VkImageViewCreateInfo* pCreateInfo,
 				 const MVKConfiguration* pAltMVKConfig = nullptr);
 
-	~MVKImageView() override;
+	~MVKImageView();
 
 protected:
+    friend MVKImageViewPlane;
+    
 	void propagateDebugName() override;
-	id<MTLTexture> newMTLTexture();
-	void initMTLTextureViewSupport();
-	void validateImageViewConfig(const VkImageViewCreateInfo* pCreateInfo);
 
     MVKImage* _image;
+    MVKSmallVector<MVKImageViewPlane*, 3> _planes;
     VkImageSubresourceRange _subresourceRange;
     VkImageUsageFlags _usage;
-	id<MTLTexture> _mtlTexture;
 	std::mutex _lock;
-	MTLPixelFormat _mtlPixelFormat;
 	MTLTextureType _mtlTextureType;
-	uint32_t _packedSwizzle;
+};
-	bool _useMTLTextureView;
+
+
+#pragma mark -
+#pragma mark MVKSamplerYcbcrConversion
+
+/** Represents a Vulkan sampler ycbcr conversion. */
+class MVKSamplerYcbcrConversion : public MVKVulkanAPIDeviceObject {
+
+public:
+    /** Returns the Vulkan type of this object. */
+    VkObjectType getVkObjectType() override { return VK_OBJECT_TYPE_SAMPLER_YCBCR_CONVERSION; }
+
+    /** Returns the debug report object type of this object. */
+    VkDebugReportObjectTypeEXT getVkDebugReportObjectType() override { return VK_DEBUG_REPORT_OBJECT_TYPE_SAMPLER_YCBCR_CONVERSION_EXT; }
+    
+    /** Returns the number of planes of this ycbcr conversion. */
+    inline uint8_t getPlaneCount() { return _planes; }
+
+    /** Writes this conversion settings to a MSL constant sampler */
+    void updateConstExprSampler(SPIRV_CROSS_NAMESPACE::MSLConstexprSampler& constExprSampler) const;
+
+    MVKSamplerYcbcrConversion(MVKDevice* device, const VkSamplerYcbcrConversionCreateInfo* pCreateInfo);
+
+    ~MVKSamplerYcbcrConversion() override {}
+
+protected:
+    void propagateDebugName() override {}
+
+    uint8_t _planes, _bpc;
+    SPIRV_CROSS_NAMESPACE::MSLFormatResolution _resolution;
+    SPIRV_CROSS_NAMESPACE::MSLSamplerFilter _chroma_filter;
+    SPIRV_CROSS_NAMESPACE::MSLChromaLocation _x_chroma_offset, _y_chroma_offset;
+    SPIRV_CROSS_NAMESPACE::MSLComponentSwizzle _swizzle[4];
+    SPIRV_CROSS_NAMESPACE::MSLSamplerYCbCrModelConversion _ycbcr_model;
+    SPIRV_CROSS_NAMESPACE::MSLSamplerYCbCrRange _ycbcr_range;
+    bool _forceExplicitReconstruction;
 };
 
 
@@ -509,6 +663,10 @@ public:
 	/** Returns the Metal sampler state. */
 	inline id<MTLSamplerState> getMTLSamplerState() { return _mtlSamplerState; }
     
+    /** Returns the number of planes if this is a ycbcr conversion or 0 otherwise. */
+    inline uint8_t getPlaneCount() { return (_ycbcrConversion) ? _ycbcrConversion->getPlaneCount() : 0; }
+
+
 	/**
 	 * If this sampler requires hardcoding in MSL, populates the hardcoded sampler in the resource binding.
 	 * Returns whether this sampler requires hardcoding in MSL, and the constant sampler was populated.
@@ -529,5 +687,6 @@ protected:
 
 	id<MTLSamplerState> _mtlSamplerState;
 	SPIRV_CROSS_NAMESPACE::MSLConstexprSampler _constExprSampler;
+	MVKSamplerYcbcrConversion* _ycbcrConversion;
 	bool _requiresConstExprSampler;
 };

MoltenVK/MoltenVK/GPUObjects/MVKInstance.mm

@@ -622,6 +622,8 @@ void MVKInstance::initProcAddrs() {
 	ADD_DVC_EXT_ENTRY_POINT(vkGetDescriptorSetLayoutSupportKHR, KHR_MAINTENANCE3);
 	ADD_DVC_EXT_ENTRY_POINT(vkCmdPushDescriptorSetKHR, KHR_PUSH_DESCRIPTOR);
 	ADD_DVC_EXT2_ENTRY_POINT(vkCmdPushDescriptorSetWithTemplateKHR, KHR_PUSH_DESCRIPTOR, KHR_DESCRIPTOR_UPDATE_TEMPLATE);
+	ADD_DVC_EXT_ENTRY_POINT(vkCreateSamplerYcbcrConversionKHR, KHR_SAMPLER_YCBCR_CONVERSION);
+	ADD_DVC_EXT_ENTRY_POINT(vkDestroySamplerYcbcrConversionKHR, KHR_SAMPLER_YCBCR_CONVERSION);
 	ADD_DVC_EXT_ENTRY_POINT(vkCreateSwapchainKHR, KHR_SWAPCHAIN);
 	ADD_DVC_EXT_ENTRY_POINT(vkDestroySwapchainKHR, KHR_SWAPCHAIN);
 	ADD_DVC_EXT_ENTRY_POINT(vkGetSwapchainImagesKHR, KHR_SWAPCHAIN);

MoltenVK/MoltenVK/GPUObjects/MVKPixelFormats.h

@@ -21,6 +21,7 @@
 #include "mvk_datatypes.h"
 #include "MVKEnvironment.h"
 #include "MVKBaseObject.h"
+#include <SPIRV-Cross/spirv_msl.hpp>
 #include <unordered_map>
 
 #import <Metal/Metal.h>
@@ -70,6 +71,8 @@ typedef enum : uint16_t {
 	kMVKMTLFmtCapsDRMR     = (kMVKMTLFmtCapsDRM | kMVKMTLFmtCapsResolve),
 	kMVKMTLFmtCapsDRFMR    = (kMVKMTLFmtCapsDRMR | kMVKMTLFmtCapsFilter),
 
+	kMVKMTLFmtCapsChromaSubsampling = kMVKMTLFmtCapsRF,
+	kMVKMTLFmtCapsMultiPlanar = kMVKMTLFmtCapsChromaSubsampling,
 } MVKMTLFmtCaps;
 
 
@@ -83,6 +86,8 @@ typedef struct {
 	MTLPixelFormat mtlPixelFormatSubstitute;
 	MTLVertexFormat mtlVertexFormat;
 	MTLVertexFormat mtlVertexFormatSubstitute;
+    uint8_t chromaSubsamplingPlaneCount;
+    uint8_t chromaSubsamplingComponentBits;
 	VkExtent2D blockTexelSize;
 	uint32_t bytesPerBlock;
 	MVKFormatType formatType;
@@ -92,7 +97,7 @@ typedef struct {
     
     inline double bytesPerTexel() const { return (double)bytesPerBlock / (double)(blockTexelSize.width * blockTexelSize.height); };
 
-	inline bool isSupported() const { return (mtlPixelFormat != MTLPixelFormatInvalid); };
+	inline bool isSupported() const { return (mtlPixelFormat != MTLPixelFormatInvalid || chromaSubsamplingPlaneCount > 0); };
 	inline bool isSupportedOrSubstitutable() const { return isSupported() || (mtlPixelFormatSubstitute != MTLPixelFormatInvalid); };
 
 	inline bool vertexIsSupported() const { return (mtlVertexFormat != MTLVertexFormatInvalid); };
@@ -174,16 +179,28 @@ public:
 
 	/**
 	 * Returns the size of the compression block, measured in texels for a Vulkan format.
-	 * The returned value will be {1, 1} for non-compressed formats.
+	 * The returned value will be {1, 1} for non-compressed formats without chroma-subsampling.
 	 */
 	VkExtent2D getBlockTexelSize(VkFormat vkFormat);
 
 	/**
 	 * Returns the size of the compression block, measured in texels for a Metal format.
-	 * The returned value will be {1, 1} for non-compressed formats.
+	 * The returned value will be {1, 1} for non-compressed formats without chroma-subsampling.
 	 */
 	VkExtent2D getBlockTexelSize(MTLPixelFormat mtlFormat);
 
+	/** Returns the number of planes of the specified chroma-subsampling (YCbCr) VkFormat */
+	uint8_t getChromaSubsamplingPlaneCount(VkFormat vkFormat);
+
+	/** Returns the number of bits per channel of the specified chroma-subsampling (YCbCr) VkFormat */
+	uint8_t getChromaSubsamplingComponentBits(VkFormat vkFormat);
+
+	/** Returns the MSLFormatResolution of the specified chroma-subsampling (YCbCr) VkFormat */
+	SPIRV_CROSS_NAMESPACE::MSLFormatResolution getChromaSubsamplingResolution(VkFormat vkFormat);
+
+    /** Returns the number of planes, blockTexelSize,  bytesPerBlock and mtlPixFmt of each plane of the specified chroma-subsampling (YCbCr) VkFormat into the given arrays */
+    uint8_t getChromaSubsamplingPlanes(VkFormat vkFormat, VkExtent2D blockTexelSize[3], uint32_t bytesPerBlock[3], MTLPixelFormat mtlPixFmt[3]);
+
 	/**
 	 * Returns the size, in bytes, of a texel of the specified Vulkan format.
 	 * The returned value may be fractional for certain compressed formats.

MoltenVK/MoltenVK/GPUObjects/MVKPixelFormats.mm

@@ -236,6 +236,61 @@ VkExtent2D MVKPixelFormats::getBlockTexelSize(MTLPixelFormat mtlFormat) {
     return getVkFormatDesc(mtlFormat).blockTexelSize;
 }
 
+uint8_t MVKPixelFormats::getChromaSubsamplingPlaneCount(VkFormat vkFormat) {
+    return getVkFormatDesc(vkFormat).chromaSubsamplingPlaneCount;
+}
+
+uint8_t MVKPixelFormats::getChromaSubsamplingComponentBits(VkFormat vkFormat) {
+    return getVkFormatDesc(vkFormat).chromaSubsamplingComponentBits;
+}
+
+SPIRV_CROSS_NAMESPACE::MSLFormatResolution MVKPixelFormats::getChromaSubsamplingResolution(VkFormat vkFormat) {
+    VkExtent2D blockTexelSize = getVkFormatDesc(vkFormat).blockTexelSize;
+    return (blockTexelSize.width != 2) ? SPIRV_CROSS_NAMESPACE::MSL_FORMAT_RESOLUTION_444
+        : (blockTexelSize.height != 2) ? SPIRV_CROSS_NAMESPACE::MSL_FORMAT_RESOLUTION_422
+                                       : SPIRV_CROSS_NAMESPACE::MSL_FORMAT_RESOLUTION_420;
+}
+
+uint8_t MVKPixelFormats::getChromaSubsamplingPlanes(VkFormat vkFormat, VkExtent2D blockTexelSize[3], uint32_t bytesPerBlock[3], MTLPixelFormat mtlPixFmt[3]) {
+    uint8_t planes = getChromaSubsamplingPlaneCount(vkFormat);
+    uint8_t bits = getChromaSubsamplingComponentBits(vkFormat);
+    SPIRV_CROSS_NAMESPACE::MSLFormatResolution resolution = getChromaSubsamplingResolution(vkFormat);
+    bytesPerBlock[0] = mvkCeilingDivide((uint32_t)bits/8U, 1U);
+    switch(resolution) {
+        default:
+            return 0;
+        case SPIRV_CROSS_NAMESPACE::MSL_FORMAT_RESOLUTION_444:
+            blockTexelSize[0] = blockTexelSize[1] = blockTexelSize[2] = VkExtent2D{1, 1};
+            break;
+        case SPIRV_CROSS_NAMESPACE::MSL_FORMAT_RESOLUTION_422:
+            blockTexelSize[0] = blockTexelSize[1] = blockTexelSize[2] = VkExtent2D{2, 1};
+            break;
+        case SPIRV_CROSS_NAMESPACE::MSL_FORMAT_RESOLUTION_420:
+            blockTexelSize[0] = blockTexelSize[1] = blockTexelSize[2] = VkExtent2D{2, 2};
+            break;
+    }
+    switch(planes) {
+        default:
+            return 0;
+        case 1:
+            bytesPerBlock[0] *= 4;
+            mtlPixFmt[0] = (bits == 8) ? MTLPixelFormatRGBA8Unorm : MTLPixelFormatRGBA16Unorm;
+            break;
+        case 2:
+            blockTexelSize[0] = VkExtent2D{1, 1};
+            bytesPerBlock[1] = bytesPerBlock[0]*2;
+            mtlPixFmt[0] = (bits == 8) ? MTLPixelFormatR8Unorm : MTLPixelFormatR16Unorm;
+            mtlPixFmt[1] = (bits == 8) ? MTLPixelFormatRG8Unorm : MTLPixelFormatRG16Unorm;
+            break;
+        case 3:
+            blockTexelSize[0] = VkExtent2D{1, 1};
+            bytesPerBlock[1] = bytesPerBlock[2] = bytesPerBlock[0];
+            mtlPixFmt[0] = mtlPixFmt[1] = mtlPixFmt[2] = (bits == 8) ? MTLPixelFormatR8Unorm : MTLPixelFormatR16Unorm;
+            break;
+    }
+    return planes;
+}
+
 float MVKPixelFormats::getBytesPerTexel(VkFormat vkFormat) {
     return getVkFormatDesc(vkFormat).bytesPerTexel();
 }
@@ -492,10 +547,16 @@ MVKPixelFormats::MVKPixelFormats(MVKPhysicalDevice* physicalDevice) : _physicalD
 //	test();
 }
 
-#define addVkFormatDesc(VK_FMT, MTL_FMT, MTL_FMT_ALT, MTL_VTX_FMT, MTL_VTX_FMT_ALT, BLK_W, BLK_H, BLK_BYTE_CNT, MVK_FMT_TYPE)  \
+#define addVkFormatDescFull(VK_FMT, MTL_FMT, MTL_FMT_ALT, MTL_VTX_FMT, MTL_VTX_FMT_ALT, CSPC, CSCB, BLK_W, BLK_H, BLK_BYTE_CNT, MVK_FMT_TYPE)  \
 	MVKAssert(fmtIdx < _vkFormatCount, "Attempting to describe %d VkFormats, but only have space for %d. Increase the value of _vkFormatCount", fmtIdx + 1, _vkFormatCount);  \
 	_vkFormatDescriptions[fmtIdx++] = { VK_FORMAT_ ##VK_FMT, MTLPixelFormat ##MTL_FMT, MTLPixelFormat ##MTL_FMT_ALT, MTLVertexFormat ##MTL_VTX_FMT, MTLVertexFormat ##MTL_VTX_FMT_ALT,  \
-										{ BLK_W, BLK_H }, BLK_BYTE_CNT, kMVKFormat ##MVK_FMT_TYPE, { 0, 0, 0 }, "VK_FORMAT_" #VK_FMT, false }
+										CSPC, CSCB, { BLK_W, BLK_H }, BLK_BYTE_CNT, kMVKFormat ##MVK_FMT_TYPE, { 0, 0, 0 }, "VK_FORMAT_" #VK_FMT, false }
+
+#define addVkFormatDesc(VK_FMT, MTL_FMT, MTL_FMT_ALT, MTL_VTX_FMT, MTL_VTX_FMT_ALT, BLK_W, BLK_H, BLK_BYTE_CNT, MVK_FMT_TYPE)  \
+    addVkFormatDescFull(VK_FMT, MTL_FMT, MTL_FMT_ALT, MTL_VTX_FMT, MTL_VTX_FMT_ALT, 0, 0, BLK_W, BLK_H, BLK_BYTE_CNT, MVK_FMT_TYPE)
+
+#define addVkFormatDescChromaSubsampling(VK_FMT, MTL_FMT, CSPC, CSCB, BLK_W, BLK_H, BLK_BYTE_CNT)  \
+addVkFormatDescFull(VK_FMT, MTL_FMT, Invalid, Invalid, Invalid, CSPC, CSCB, BLK_W, BLK_H, BLK_BYTE_CNT, ColorFloat)
 
 void MVKPixelFormats::initVkFormatCapabilities() {
 
@@ -744,9 +805,41 @@ void MVKPixelFormats::initVkFormatCapabilities() {
 	addVkFormatDesc( PVRTC2_2BPP_SRGB_BLOCK_IMG, Invalid, Invalid, Invalid, Invalid, 8, 4, 8, Compressed );
 	addVkFormatDesc( PVRTC2_4BPP_SRGB_BLOCK_IMG, Invalid, Invalid, Invalid, Invalid, 4, 4, 8, Compressed );
 
-	// Future extension VK_KHX_color_conversion and Vulkan 1.1.
+	// Extension VK_KHR_sampler_ycbcr_conversion
-	addVkFormatDesc( UNDEFINED, GBGR422, Invalid, Invalid, Invalid, 2, 1, 4, ColorFloat );
+    addVkFormatDescChromaSubsampling( G8B8G8R8_422_UNORM, GBGR422, 1, 8, 2, 1, 4 );
-	addVkFormatDesc( UNDEFINED, BGRG422, Invalid, Invalid, Invalid, 2, 1, 4, ColorFloat );
+    addVkFormatDescChromaSubsampling( B8G8R8G8_422_UNORM, BGRG422, 1, 8, 2, 1, 4 );
+    addVkFormatDescChromaSubsampling( G8_B8_R8_3PLANE_420_UNORM, Invalid, 3, 8, 2, 2, 6 );
+    addVkFormatDescChromaSubsampling( G8_B8R8_2PLANE_420_UNORM, Invalid, 2, 8, 2, 2, 6 );
+    addVkFormatDescChromaSubsampling( G8_B8_R8_3PLANE_422_UNORM, Invalid, 3, 8, 2, 1, 4 );
+    addVkFormatDescChromaSubsampling( G8_B8R8_2PLANE_422_UNORM, Invalid, 2, 8, 2, 1, 4 );
+    addVkFormatDescChromaSubsampling( G8_B8_R8_3PLANE_444_UNORM, Invalid, 3, 8, 1, 1, 3 );
+    addVkFormatDescChromaSubsampling( R10X6_UNORM_PACK16, Invalid, 0, 10, 1, 1, 2 );
+    addVkFormatDescChromaSubsampling( R10X6G10X6_UNORM_2PACK16, Invalid, 0, 10, 1, 1, 4 );
+    addVkFormatDescChromaSubsampling( R10X6G10X6B10X6A10X6_UNORM_4PACK16, Invalid, 0, 10, 1, 1, 8 );
+    addVkFormatDescChromaSubsampling( G10X6B10X6G10X6R10X6_422_UNORM_4PACK16, Invalid, 1, 10, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( B10X6G10X6R10X6G10X6_422_UNORM_4PACK16, Invalid, 1, 10, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16, Invalid, 3, 10, 2, 2, 12 );
+    addVkFormatDescChromaSubsampling( G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16, Invalid, 2, 10, 2, 2, 12 );
+    addVkFormatDescChromaSubsampling( G10X6_B10X6_R10X6_3PLANE_422_UNORM_3PACK16, Invalid, 3, 10, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G10X6_B10X6R10X6_2PLANE_422_UNORM_3PACK16, Invalid, 2, 10, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G10X6_B10X6_R10X6_3PLANE_444_UNORM_3PACK16, Invalid, 3, 10, 1, 1, 6 );
+    addVkFormatDescChromaSubsampling( R12X4_UNORM_PACK16, Invalid, 0, 12, 1, 1, 2 );
+    addVkFormatDescChromaSubsampling( R12X4G12X4_UNORM_2PACK16, Invalid, 0, 12, 1, 1, 4 );
+    addVkFormatDescChromaSubsampling( R12X4G12X4B12X4A12X4_UNORM_4PACK16, Invalid, 0, 12, 1, 1, 8 );
+    addVkFormatDescChromaSubsampling( G12X4B12X4G12X4R12X4_422_UNORM_4PACK16, Invalid, 1, 12, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( B12X4G12X4R12X4G12X4_422_UNORM_4PACK16, Invalid, 1, 12, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16, Invalid, 3, 12, 2, 2, 12 );
+    addVkFormatDescChromaSubsampling( G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16, Invalid, 2, 12, 2, 2, 12 );
+    addVkFormatDescChromaSubsampling( G12X4_B12X4_R12X4_3PLANE_422_UNORM_3PACK16, Invalid, 3, 12, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G12X4_B12X4R12X4_2PLANE_422_UNORM_3PACK16, Invalid, 2, 12, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G12X4_B12X4_R12X4_3PLANE_444_UNORM_3PACK16, Invalid, 3, 12, 1, 1, 6 );
+    addVkFormatDescChromaSubsampling( G16B16G16R16_422_UNORM, Invalid, 1, 16, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( B16G16R16G16_422_UNORM, Invalid, 1, 16, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G16_B16_R16_3PLANE_420_UNORM, Invalid, 3, 16, 2, 2, 12 );
+    addVkFormatDescChromaSubsampling( G16_B16R16_2PLANE_420_UNORM, Invalid, 2, 16, 2, 2, 12 );
+    addVkFormatDescChromaSubsampling( G16_B16_R16_3PLANE_422_UNORM, Invalid, 3, 16, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G16_B16R16_2PLANE_422_UNORM, Invalid, 2, 16, 2, 1, 8 );
+    addVkFormatDescChromaSubsampling( G16_B16_R16_3PLANE_444_UNORM, Invalid, 3, 16, 1, 1, 6 );
 
 	// When adding to this list, be sure to ensure _vkFormatCount is large enough for the format count
 }
@@ -1328,6 +1421,17 @@ typedef enum : VkFormatFeatureFlags {
 										   VK_FORMAT_FEATURE_BLIT_DST_BIT),
 	kMVKVkFormatFeatureFlagsTexDSAtt    = (VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT),
 	kMVKVkFormatFeatureFlagsTexBlend    = (VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT),
+    kMVKVkFormatFeatureFlagsTexTransfer          = (VK_FORMAT_FEATURE_TRANSFER_SRC_BIT |
+                                                    VK_FORMAT_FEATURE_TRANSFER_DST_BIT |
+                                                    VK_FORMAT_FEATURE_BLIT_SRC_BIT |
+                                                    VK_FORMAT_FEATURE_BLIT_DST_BIT),
+    kMVKVkFormatFeatureFlagsTexChromaSubsampling = (VK_FORMAT_FEATURE_MIDPOINT_CHROMA_SAMPLES_BIT_KHR |
+                                                    VK_FORMAT_FEATURE_COSITED_CHROMA_SAMPLES_BIT_KHR |
+                                                    VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_LINEAR_FILTER_BIT_KHR |
+                                                    VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_SEPARATE_RECONSTRUCTION_FILTER_BIT_KHR |
+                                                    VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_BIT_KHR |
+                                                    VK_FORMAT_FEATURE_SAMPLED_IMAGE_YCBCR_CONVERSION_CHROMA_RECONSTRUCTION_EXPLICIT_FORCEABLE_BIT_KHR),
+    kMVKVkFormatFeatureFlagsTexMultiPlanar       = (VK_FORMAT_FEATURE_DISJOINT_BIT_KHR),
 	kMVKVkFormatFeatureFlagsBufRead     = (VK_FORMAT_FEATURE_UNIFORM_TEXEL_BUFFER_BIT),
 	kMVKVkFormatFeatureFlagsBufWrite    = (VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_BIT),
 	kMVKVkFormatFeatureFlagsBufAtomic   = (VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_ATOMIC_BIT),
@@ -1344,9 +1448,23 @@ void MVKPixelFormats::setFormatProperties(MVKVkFormatDesc& vkDesc) {
 
 	VkFormatProperties& vkProps = vkDesc.properties;
 	MVKMTLFmtCaps mtlPixFmtCaps = getMTLPixelFormatDesc(vkDesc.mtlPixelFormat).mtlFmtCaps;
-
-	// Set optimal tiling features first
     vkProps.optimalTilingFeatures = kMVKVkFormatFeatureFlagsTexNone;
+    vkProps.linearTilingFeatures = kMVKVkFormatFeatureFlagsTexNone;
+
+    // Chroma subsampling and multi planar features
+    if (getChromaSubsamplingComponentBits(vkDesc.vkFormat) > 0) {
+        vkProps.optimalTilingFeatures = kMVKVkFormatFeatureFlagsTexTransfer;
+    }
+    uint8_t chromaSubsamplingPlaneCount = getChromaSubsamplingPlaneCount(vkDesc.vkFormat);
+    if (chromaSubsamplingPlaneCount > 0) {
+        mtlPixFmtCaps = kMVKMTLFmtCapsRF;
+        enableFormatFeatures(ChromaSubsampling, Tex, mtlPixFmtCaps, vkProps.optimalTilingFeatures);
+    }
+    if (chromaSubsamplingPlaneCount > 1) {
+        enableFormatFeatures(MultiPlanar, Tex, mtlPixFmtCaps, vkProps.optimalTilingFeatures);
+    }
+
+	// Optimal tiling features
 	enableFormatFeatures(Read, Tex, mtlPixFmtCaps, vkProps.optimalTilingFeatures);
 	enableFormatFeatures(Filter, Tex, mtlPixFmtCaps, vkProps.optimalTilingFeatures);
 	enableFormatFeatures(Write, Tex, mtlPixFmtCaps, vkProps.optimalTilingFeatures);
@@ -1355,9 +1473,7 @@ void MVKPixelFormats::setFormatProperties(MVKVkFormatDesc& vkDesc) {
 	enableFormatFeatures(Blend, Tex, mtlPixFmtCaps, vkProps.optimalTilingFeatures);
 
 	// Linear tiling is not available to depth/stencil or compressed formats.
-	vkProps.linearTilingFeatures = kMVKVkFormatFeatureFlagsTexNone;
 	if ( !(vkDesc.formatType == kMVKFormatDepthStencil || vkDesc.formatType == kMVKFormatCompressed) ) {
-
 		// Start with optimal tiling features, and modify.
 		vkProps.linearTilingFeatures = vkProps.optimalTilingFeatures;
 

MoltenVK/MoltenVK/GPUObjects/MVKRenderPass.mm

@@ -110,7 +110,7 @@ void MVKRenderSubpass::populateMTLRenderPassDescriptor(MTLRenderPassDescriptor*
 	if (dsRPAttIdx != VK_ATTACHMENT_UNUSED) {
 		MVKRenderPassAttachment* dsMVKRPAtt = &_renderPass->_attachments[dsRPAttIdx];
 		MVKImageView* dsImage = framebuffer->getAttachment(dsRPAttIdx);
-		MTLPixelFormat mtlDSFormat = dsImage->getMTLPixelFormat();
+		MTLPixelFormat mtlDSFormat = dsImage->getMTLPixelFormat(0);
 
 		if (pixFmts->isDepthFormat(mtlDSFormat)) {
 			MTLRenderPassDepthAttachmentDescriptor* mtlDepthAttDesc = mtlRPDesc.depthAttachment;

MoltenVK/MoltenVK/GPUObjects/MVKResource.h

@@ -39,12 +39,6 @@ public:
     /** Returns the byte offset in the bound device memory. */
     inline VkDeviceSize getDeviceMemoryOffset() { return _deviceMemoryOffset; }
 
-	/** Returns the memory requirements of this resource by populating the specified structure. */
-	virtual VkResult getMemoryRequirements(VkMemoryRequirements* pMemoryRequirements) = 0;
-
-	/** Returns the memory requirements of this resource by populating the specified structure. */
-	virtual VkResult getMemoryRequirements(const void* pInfo, VkMemoryRequirements2* pMemoryRequirements) = 0;
-
 	/** Binds this resource to the specified offset within the specified memory allocation. */
 	virtual VkResult bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize memOffset);
 
@@ -78,10 +72,6 @@ public:
     MVKResource(MVKDevice* device) : MVKVulkanAPIDeviceObject(device) {}
 
 protected:
-	virtual bool needsHostReadSync(VkPipelineStageFlags srcStageMask,
-								   VkPipelineStageFlags dstStageMask,
-								   VkMemoryBarrier* pMemoryBarrier);
-
 	MVKDeviceMemory* _deviceMemory = nullptr;
 	VkDeviceSize _deviceMemoryOffset = 0;
     VkDeviceSize _byteCount = 0;

MoltenVK/MoltenVK/GPUObjects/MVKResource.mm

@@ -34,18 +34,3 @@ VkResult MVKResource::bindDeviceMemory(MVKDeviceMemory* mvkMem, VkDeviceSize mem
 	return VK_SUCCESS;
 }
 
-// Returns whether the specified global memory barrier requires a sync between this
-// texture and host memory for the purpose of the host reading texture memory.
-bool MVKResource::needsHostReadSync(VkPipelineStageFlags srcStageMask,
-									VkPipelineStageFlags dstStageMask,
-									VkMemoryBarrier* pMemoryBarrier) {
-#if MVK_IOS_OR_TVOS
-	return false;
-#endif
-#if MVK_MACOS
-	return (mvkIsAnyFlagEnabled(dstStageMask, (VK_PIPELINE_STAGE_HOST_BIT)) &&
-			mvkIsAnyFlagEnabled(pMemoryBarrier->dstAccessMask, (VK_ACCESS_HOST_READ_BIT)) &&
-			isMemoryHostAccessible() && !isMemoryHostCoherent());
-#endif
-}
-

MoltenVK/MoltenVK/GPUObjects/MVKSwapchain.mm

@@ -384,18 +384,16 @@ void MVKSwapchain::initSurfaceImages(const VkSwapchainCreateInfoKHR* pCreateInfo
 
 VkResult MVKSwapchain::getRefreshCycleDuration(VkRefreshCycleDurationGOOGLE *pRefreshCycleDuration) {
 #if MVK_IOS_OR_TVOS
-	NSInteger framesPerSecond = 60;
+	UIScreen* screen = [UIScreen mainScreen];
-	if (@available(iOS 10.3, tvOS 10.3, *)) {
+	if ([screen respondsToSelector: @selector(maximumFramesPerSecond)]) {
-		framesPerSecond = [UIScreen mainScreen].maximumFramesPerSecond;
+		framesPerSecond = screen.maximumFramesPerSecond;
-	} else {
-		// TODO: fallback
 	}
 #endif
 #if MVK_MACOS
 	// TODO: hook this up for macOS, probably need to use CGDisplayModeGetRefeshRate
-	NSInteger framesPerSecond = 60;
 #endif
-	pRefreshCycleDuration->refreshDuration = 1e9 / ( uint64_t ) framesPerSecond;
+
+	pRefreshCycleDuration->refreshDuration = (uint64_t)1e9 / framesPerSecond;
 	return VK_SUCCESS;
 }
 

MoltenVK/MoltenVK/GPUObjects/MVKVulkanAPIObject.h

@@ -63,7 +63,7 @@ public:
 	 * Called when this instance has been retained as a reference by another object,
 	 * indicating that this instance will not be deleted until that reference is released.
 	 */
-	void retain();
+	inline void retain() { _refCount++; }
 
 	/**
 	 * Called when this instance has been released as a reference from another object.
@@ -71,14 +71,14 @@ public:
 	 * If the destroy() function has already been called on this instance by the time
 	 * this function is called, this instance will be deleted.
 	 */
-	void release();
+	inline void release() { if (--_refCount == 0) { MVKConfigurableObject::destroy(); } }
 
 	/**
 	 * Marks this instance as destroyed. If all previous references to this instance
 	 * have been released, this instance will be deleted, otherwise deletion of this
 	 * instance will automatically be deferred until all references have been released.
 	 */
-	void destroy() override;
+	void destroy() override { release(); }
 
 	/** Gets the debug object name of this instance. */
 	inline NSString* getDebugName() { return _debugName; }

MoltenVK/MoltenVK/GPUObjects/MVKVulkanAPIObject.mm

@@ -24,18 +24,6 @@ using namespace std;
 #pragma mark -
 #pragma mark MVKVulkanAPIObject
 
-void MVKVulkanAPIObject::retain() {
-	_refCount++;
-}
-
-void MVKVulkanAPIObject::release() {
-	if (--_refCount == 0) { MVKConfigurableObject::destroy(); }
-}
-
-void MVKVulkanAPIObject::destroy() {
-	release();
-}
-
 VkResult MVKVulkanAPIObject::setDebugName(const char* pObjectName) {
 	if (pObjectName) {
 		[_debugName release];

MoltenVK/MoltenVK/Layers/MVKExtensions.def

@@ -58,6 +58,7 @@ MVK_EXTENSION(KHR_maintenance3, KHR_MAINTENANCE3, DEVICE)
 MVK_EXTENSION(KHR_push_descriptor, KHR_PUSH_DESCRIPTOR, DEVICE)
 MVK_EXTENSION(KHR_relaxed_block_layout, KHR_RELAXED_BLOCK_LAYOUT, DEVICE)
 MVK_EXTENSION(KHR_sampler_mirror_clamp_to_edge, KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE, DEVICE)
+MVK_EXTENSION(KHR_sampler_ycbcr_conversion, KHR_SAMPLER_YCBCR_CONVERSION, DEVICE)
 MVK_EXTENSION(KHR_shader_draw_parameters, KHR_SHADER_DRAW_PARAMETERS, DEVICE)
 MVK_EXTENSION(KHR_shader_float16_int8, KHR_SHADER_FLOAT16_INT8, DEVICE)
 MVK_EXTENSION(KHR_storage_buffer_storage_class, KHR_STORAGE_BUFFER_STORAGE_CLASS, DEVICE)
@@ -76,6 +77,7 @@ MVK_EXTENSION(EXT_inline_uniform_block, EXT_INLINE_UNIFORM_BLOCK, DEVICE)
 MVK_EXTENSION(EXT_memory_budget, EXT_MEMORY_BUDGET, DEVICE)
 MVK_EXTENSION(EXT_metal_surface, EXT_METAL_SURFACE, INSTANCE)
 MVK_EXTENSION(EXT_post_depth_coverage, EXT_POST_DEPTH_COVERAGE, DEVICE)
+MVK_EXTENSION(EXT_robustness2, EXT_ROBUSTNESS_2, DEVICE)
 MVK_EXTENSION(EXT_scalar_block_layout, EXT_SCALAR_BLOCK_LAYOUT, DEVICE)
 MVK_EXTENSION(EXT_shader_stencil_export, EXT_SHADER_STENCIL_EXPORT, DEVICE)
 MVK_EXTENSION(EXT_shader_viewport_index_layer, EXT_SHADER_VIEWPORT_INDEX_LAYER, DEVICE)

MoltenVK/MoltenVK/Utility/MVKFoundation.h

@@ -523,7 +523,7 @@ void mvkDisableFlags(Tv& value, const Tm bitMask) { value = (Tv)(value & ~(Tv)bi
 
 /** Returns whether the specified value has ANY of the flags specified in bitMask enabled (set to 1). */
 template<typename Tv, typename Tm>
-bool mvkIsAnyFlagEnabled(Tv value, const Tm bitMask) { return !!(value & bitMask); }
+bool mvkIsAnyFlagEnabled(Tv value, const Tm bitMask) { return ((value & bitMask) != 0); }
 
 /** Returns whether the specified value has ALL of the flags specified in bitMask enabled (set to 1). */
 template<typename Tv, typename Tm>

MoltenVK/MoltenVK/Vulkan/vk_mvk_moltenvk.mm

@@ -115,7 +115,7 @@ MVK_PUBLIC_SYMBOL VkResult vkSetMTLTextureMVK(
     id<MTLTexture>                              mtlTexture) {
 
     MVKImage* mvkImg = (MVKImage*)image;
-    return mvkImg->setMTLTexture(mtlTexture);
+    return mvkImg->setMTLTexture(0, mtlTexture);
 }
 
 MVK_PUBLIC_SYMBOL void vkGetMTLTextureMVK(
@@ -123,7 +123,7 @@ MVK_PUBLIC_SYMBOL void vkGetMTLTextureMVK(
     id<MTLTexture>*                             pMTLTexture) {
 
     MVKImage* mvkImg = (MVKImage*)image;
-    *pMTLTexture = mvkImg->getMTLTexture();
+    *pMTLTexture = mvkImg->getMTLTexture(0);
 }
 
 MVK_PUBLIC_SYMBOL void vkGetMTLBufferMVK(

MoltenVK/MoltenVK/Vulkan/vulkan.mm

@@ -526,7 +526,7 @@ MVK_PUBLIC_SYMBOL VkResult vkBindImageMemory(
 	MVKTraceVulkanCallStart();
 	MVKImage* mvkImg = (MVKImage*)image;
 	MVKDeviceMemory* mvkMem = (MVKDeviceMemory*)mem;
-	VkResult rslt = mvkImg->bindDeviceMemory(mvkMem, memOffset);
+	VkResult rslt = mvkImg->bindDeviceMemory(mvkMem, memOffset, 0);
 	MVKTraceVulkanCallEnd();
 	return rslt;
 }
@@ -549,7 +549,7 @@ MVK_PUBLIC_SYMBOL void vkGetImageMemoryRequirements(
 	
 	MVKTraceVulkanCallStart();
 	MVKImage* mvkImg = (MVKImage*)image;
-	mvkImg->getMemoryRequirements(pMemoryRequirements);
+	mvkImg->getMemoryRequirements(pMemoryRequirements, 0);
 	MVKTraceVulkanCallEnd();
 }
 
@@ -2218,6 +2218,37 @@ MVK_PUBLIC_SYMBOL void vkCmdPushDescriptorSetWithTemplateKHR(
 }
 
 
+#pragma mark -
+#pragma mark VK_KHR_sampler_ycbcr_conversion extension
+
+MVK_PUBLIC_SYMBOL VkResult vkCreateSamplerYcbcrConversionKHR(
+    VkDevice                                    device,
+    const VkSamplerYcbcrConversionCreateInfo*   pCreateInfo,
+    const VkAllocationCallbacks*                pAllocator,
+    VkSamplerYcbcrConversion*                   pYcbcrConversion) {
+
+    MVKTraceVulkanCallStart();
+	MVKDevice* mvkDev = MVKDevice::getMVKDevice(device);
+	MVKSamplerYcbcrConversion* mvkSampConv = mvkDev->createSamplerYcbcrConversion(pCreateInfo, pAllocator);
+	*pYcbcrConversion = (VkSamplerYcbcrConversion)mvkSampConv;
+	VkResult rslt = mvkSampConv->getConfigurationResult();
+	MVKTraceVulkanCallEnd();
+	return rslt;
+}
+
+MVK_PUBLIC_SYMBOL void vkDestroySamplerYcbcrConversionKHR(
+    VkDevice                                    device,
+    VkSamplerYcbcrConversion                    ycbcrConversion,
+    const VkAllocationCallbacks*                pAllocator) {
+
+    MVKTraceVulkanCallStart();
+	if ( !ycbcrConversion ) { return; }
+	MVKDevice* mvkDev = MVKDevice::getMVKDevice(device);
+	mvkDev->destroySamplerYcbcrConversion((MVKSamplerYcbcrConversion*)ycbcrConversion, pAllocator);
+	MVKTraceVulkanCallEnd();
+}
+
+
 #pragma mark -
 #pragma mark VK_KHR_swapchain extension
 

MoltenVKShaderConverter/MoltenVKSPIRVToMSLConverter/SPIRVToMSLConverter.cpp

@@ -136,9 +136,22 @@ MVK_PUBLIC_SYMBOL bool mvk::MSLResourceBinding::matches(const MSLResourceBinding
 		if (constExprSampler.lod_clamp_min != other.constExprSampler.lod_clamp_min) { return false; }
 		if (constExprSampler.lod_clamp_max != other.constExprSampler.lod_clamp_max) { return false; }
 		if (constExprSampler.max_anisotropy != other.constExprSampler.max_anisotropy) { return false; }
+
+		if (constExprSampler.planes != other.constExprSampler.planes) { return false; }
+		if (constExprSampler.resolution != other.constExprSampler.resolution) { return false; }
+		if (constExprSampler.chroma_filter != other.constExprSampler.chroma_filter) { return false; }
+		if (constExprSampler.x_chroma_offset != other.constExprSampler.x_chroma_offset) { return false; }
+		if (constExprSampler.y_chroma_offset != other.constExprSampler.y_chroma_offset) { return false; }
+		for(uint32_t i = 0; i < 4; ++i)
+			if (constExprSampler.swizzle[i] != other.constExprSampler.swizzle[i]) { return false; }
+		if (constExprSampler.ycbcr_model != other.constExprSampler.ycbcr_model) { return false; }
+		if (constExprSampler.ycbcr_range != other.constExprSampler.ycbcr_range) { return false; }
+		if (constExprSampler.bpc != other.constExprSampler.bpc) { return false; }
+
 		if (constExprSampler.compare_enable != other.constExprSampler.compare_enable) { return false; }
 		if (constExprSampler.lod_clamp_enable != other.constExprSampler.lod_clamp_enable) { return false; }
 		if (constExprSampler.anisotropy_enable != other.constExprSampler.anisotropy_enable) { return false; }
+		if (constExprSampler.ycbcr_conversion_enable != other.constExprSampler.ycbcr_conversion_enable) { return false; }
 	}
 
 	return true;

MoltenVKShaderConverter/MoltenVKShaderConverter.xcodeproj/project.pbxproj

@@ -989,8 +989,6 @@
 		A93747401A9A8B2900F29B34 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = NO;
 				CLANG_WARN_UNREACHABLE_CODE = NO;
 				GCC_WARN_ABOUT_MISSING_FIELD_INITIALIZERS = NO;
@@ -1000,15 +998,12 @@
 				PRODUCT_NAME = MoltenVKGLSLToSPIRVConverter;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
 		A93747411A9A8B2900F29B34 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = NO;
 				CLANG_WARN_UNREACHABLE_CODE = NO;
 				GCC_WARN_ABOUT_MISSING_FIELD_INITIALIZERS = NO;
@@ -1018,7 +1013,6 @@
 				PRODUCT_NAME = MoltenVKGLSLToSPIRVConverter;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -1053,8 +1047,6 @@
 		A93903BD1C57E9D700FE90DC /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					"SPIRV_CROSS_NAMESPACE_OVERRIDE=MVK_spirv_cross",
@@ -1064,15 +1056,12 @@
 				PRODUCT_NAME = MoltenVKSPIRVToMSLConverter;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Debug;
 		};
 		A93903BE1C57E9D700FE90DC /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = arm64;
-				BITCODE_GENERATION_MODE = bitcode;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					"SPIRV_CROSS_NAMESPACE_OVERRIDE=MVK_spirv_cross",
@@ -1082,7 +1071,6 @@
 				PRODUCT_NAME = MoltenVKSPIRVToMSLConverter;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				VALID_ARCHS = arm64;
 			};
 			name = Release;
 		};
@@ -1118,6 +1106,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = NO;
@@ -1131,9 +1120,10 @@
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
-				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = YES;
+				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = NO;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CLANG_WARN_UNREACHABLE_CODE = NO;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = NO;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
@@ -1150,8 +1140,8 @@
 				GCC_WARN_HIDDEN_VIRTUAL_FUNCTIONS = YES;
 				GCC_WARN_NON_VIRTUAL_DESTRUCTOR = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
-				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = NO;
 				HEADER_SEARCH_PATHS = (
 					"$(inherited)",
@@ -1164,7 +1154,6 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				ONLY_ACTIVE_ARCH = YES;
 				SKIP_INSTALL = YES;
-				VALID_ARCHS = x86_64;
 			};
 			name = Debug;
 		};
@@ -1172,6 +1161,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = NO;
@@ -1185,9 +1175,10 @@
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
-				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = YES;
+				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = NO;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CLANG_WARN_UNREACHABLE_CODE = NO;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = NO;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = YES;
 				ENABLE_NS_ASSERTIONS = NO;
@@ -1204,8 +1195,8 @@
 				GCC_WARN_HIDDEN_VIRTUAL_FUNCTIONS = YES;
 				GCC_WARN_NON_VIRTUAL_DESTRUCTOR = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
-				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = NO;
 				HEADER_SEARCH_PATHS = (
 					"$(inherited)",
@@ -1218,7 +1209,6 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				SKIP_INSTALL = YES;
 				VALIDATE_PRODUCT = YES;
-				VALID_ARCHS = x86_64;
 			};
 			name = Release;
 		};

MoltenVKShaderConverter/MoltenVKShaderConverterTool/OSSupport.mm

@@ -19,6 +19,7 @@
 #include "OSSupport.h"
 #include "FileSupport.h"
 #include "MoltenVKShaderConverterTool.h"
+#include "MVKOSExtensions.h"
 
 #import <Foundation/Foundation.h>
 #import <Metal/Metal.h>
@@ -71,13 +72,9 @@ bool mvk::compile(const string& mslSourceCode,
 
 	MTLLanguageVersion mslVerEnum = (MTLLanguageVersion)0;
 	if (mslVer(2, 1, 0)) {
-		if (@available(macOS 10.14, *)) {
 		mslVerEnum = MTLLanguageVersion2_1;
-		}
 	} else if (mslVer(2, 0, 0)) {
-		if (@available(macOS 10.13, *)) {
 		mslVerEnum = MTLLanguageVersion2_0;
-		}
 	} else if (mslVer(1, 2, 0)) {
 		mslVerEnum = MTLLanguageVersion1_2;
 	} else if (mslVer(1, 1, 0)) {