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Restrict MTLHeap to private or shared storage modes on iOS.

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Set heap storage mode and CPU cache mode parameters directly.
This commit is contained in:
Bill Hollings 2019-12-16 16:53:20 -05:00
parent a7348e2c69
commit b6aae29a85
1 changed files with 8 additions and 2 deletions
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10
MoltenVK/MoltenVK/GPUObjects/MVKDeviceMemory.mm
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@ -182,13 +182,19 @@ bool MVKDeviceMemory::ensureMTLHeap() {
if (_allocationSize == 0) { return true; }
#if MVK_MACOS
// MTLHeaps on Mac must use private storage for now.
// MTLHeaps on macOS must use private storage for now.
if (_mtlStorageMode != MTLStorageModePrivate) { return true; }
#endif
#if MVK_IOS
// MTLHeaps on iOS must use private or shared storage for now.
if ( !(_mtlStorageMode == MTLStorageModePrivate ||
_mtlStorageMode == MTLStorageModeShared) ) { return true; }
#endif
MTLHeapDescriptor* heapDesc = [MTLHeapDescriptor new];
heapDesc.type = MTLHeapTypePlacement;
heapDesc.resourceOptions = getMTLResourceOptions();
heapDesc.storageMode = _mtlStorageMode;
heapDesc.cpuCacheMode = _mtlCPUCacheMode;
// For now, use tracked resources. Later, we should probably default
// to untracked, since Vulkan uses explicit barriers anyway.
heapDesc.hazardTrackingMode = MTLHazardTrackingModeTracked;