Advertise linear filtering of linear textures on macOS. I don't see any
reason this was disabled, and I don't know why I didn't turn it on in
PR #391.
Advertise that texel buffers of `VK_FORMAT_A2R10G10B10_UNORM_PACK32` are
supported. This was another oversight of mine in #391.
*Don't* advertise that sRGB formats can be used as vertex attributes.
I'm not sure what that would even mean--I'm guessing that the
implementation performs sRGB->linear conversion on the attribute before
loading it? But we don't do that and neither does Metal.
Correct maximum number of texel buffer elements for the native texture
buffer case. With an 8-bit format, I assume it's possible to create a
texture buffer spanning the entire 3.5 GiB (the maximum size of a buffer
on my GPU).
Set the structure type in the physical device's
`_texelBuffAlignProperties` struct. Otherwise, when it gets written out
to a chain, the structure type will be lost, and it wouldn't e.g. show
up in `vulkaninfo`.
Fix enumeration of formats when one of the members of the
`VkFormatProperties` is zero. I intended that to mean "don't care," but
it was erroneously filtering out, well, everything. Now we actually
accurately report the minimum alignment requirements.
The documentation for the corresponding Metal format recommends using it
on displays with wide-color output to reduce banding artifacts, and thus
implies that it is possible to use it with a CAMetalLayer.
This extension lets implementations report separate limits for uniform
and storage texel buffers, as well as whether or not the required
alignment is only a single texel of the buffer view's format.
This information is available in Metal, but only through an API query.
We must query the required alignment for every buffer view format we
support.
Update Vulkan-Headers to pull in support for this new extension.
Only some of the color spaces provided by this extension are supported.
macOS 10.12 supports a few more. macOS 10.14 (at least, according to the
*10.15* SDK) supports even more. (But that needs a change to the
Metal-3.0 branch.)
I've chosen to group by color space. That way, programs will find the
all the supported formats early on. Programs that are interested in
the color space can keep looking.
This is supported by Mac GPU Family 2 starting on macOS 10.14, and Apple
GPU Family 5 starting on iOS 12.
Supporting this is a bit tricky. Because only some devices support this
extension, we now have to keep track of supported device extensions per
device.
from parent MVKCmdCopyImage class.
Refactor MVKCmdCopyImage & MVKCmdBlitImage to hold corresponding Vulkan structs.
MVKCommandResourceFactory::getBlitFragFunction() only pass srcSlice.
MVKCmdCopyImage uses texture view if formats different. Enable
MTLTextureUsagePixelFormatView for VK_IMAGE_USAGE_TRANSFER_SRC_BIT.
Refactor mvkMTLTextureUsageFromVkImageUsageFlags() to clarify Metal usages
and enable views on depth-stencil attachments by default.
Retain MVKSwapchainImage before passing to MTLCommandBuffer completion handler.
Redesign MVKVulkanAPIObject retain/release functionality using atomic ref count
instead of mutex locks, to simplify design and improve performance.
Refactor SPIRVToMSLConverterContext into distinct SPIRVToMSLConversionConfiguration
and SPIRVToMSLConversionResults for conversion input and output, respectively.
Update to latest SPIRV-Cross version.
Update What's New document.
On iOS GPU family 2 and earlier:
- Allow immutable samplers to be passed to SPIRV-Cross in a format
they can be output as hardcoded constexpr samplers in MSL.
- Validate depth compare samplers are only used as immutable.
MVKMVKPipelineLayout & MVKDescriptorSetLayout can take null MVKCommandEncoder
to perform a validation pass when binding or pushing.
Reduce redundancy by combining SPIRVToMSLConverterContext structs
with compatible SPIRV-Cross structs.
Update MoltenVK version to 1.0.36.
vkCmdClearAttachments(): Return encoder to previous pipeline, depth-stencil & resource state after execution.
Fix issue clearing stencil attachment via renderpass when depth attachment is not being cleared.
