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// Copyright 2017 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "dawn/native/metal/TextureMTL.h"
#include "dawn/common/Constants.h"
#include "dawn/common/Math.h"
#include "dawn/common/Platform.h"
#include "dawn/native/DynamicUploader.h"
#include "dawn/native/EnumMaskIterator.h"
#include "dawn/native/metal/BufferMTL.h"
#include "dawn/native/metal/DeviceMTL.h"
#include "dawn/native/metal/UtilsMetal.h"
#include <CoreVideo/CVPixelBuffer.h>
namespace dawn::native::metal {
namespace {
MTLTextureUsage MetalTextureUsage(const Format& format, wgpu::TextureUsage usage) {
MTLTextureUsage result = MTLTextureUsageUnknown; // This is 0
if (usage & (wgpu::TextureUsage::StorageBinding)) {
result |= MTLTextureUsageShaderWrite | MTLTextureUsageShaderRead;
}
if (usage & (wgpu::TextureUsage::TextureBinding)) {
result |= MTLTextureUsageShaderRead;
// For sampling stencil aspect of combined depth/stencil.
// See TextureView::Initialize.
// Depth views for depth/stencil textures in Metal simply use the original
// texture's format, but stencil views require format reinterpretation.
if (IsSubset(Aspect::Depth | Aspect::Stencil, format.aspects)) {
result |= MTLTextureUsagePixelFormatView;
}
}
if (usage & wgpu::TextureUsage::RenderAttachment) {
result |= MTLTextureUsageRenderTarget;
}
return result;
}
MTLTextureType MetalTextureViewType(wgpu::TextureViewDimension dimension,
unsigned int sampleCount) {
switch (dimension) {
case wgpu::TextureViewDimension::e1D:
return MTLTextureType1D;
case wgpu::TextureViewDimension::e2D:
return (sampleCount > 1) ? MTLTextureType2DMultisample : MTLTextureType2D;
case wgpu::TextureViewDimension::e2DArray:
return MTLTextureType2DArray;
case wgpu::TextureViewDimension::Cube:
return MTLTextureTypeCube;
case wgpu::TextureViewDimension::CubeArray:
return MTLTextureTypeCubeArray;
case wgpu::TextureViewDimension::e3D:
return MTLTextureType3D;
case wgpu::TextureViewDimension::Undefined:
UNREACHABLE();
}
}
bool RequiresCreatingNewTextureView(const TextureBase* texture,
const TextureViewDescriptor* textureViewDescriptor) {
constexpr wgpu::TextureUsage kShaderUsageNeedsView =
wgpu::TextureUsage::StorageBinding | wgpu::TextureUsage::TextureBinding;
constexpr wgpu::TextureUsage kUsageNeedsView =
kShaderUsageNeedsView | wgpu::TextureUsage::RenderAttachment;
if ((texture->GetInternalUsage() & kUsageNeedsView) == 0) {
return false;
}
if (texture->GetFormat().format != textureViewDescriptor->format &&
!texture->GetFormat().HasDepthOrStencil()) {
// Color format reinterpretation required.
// Note: Depth/stencil formats don't support reinterpretation.
// See also TextureView::GetAttachmentInfo when modifying this condition.
return true;
}
// Reinterpretation not required. Now, we only need a new view if the view dimension or
// set of subresources for the shader is different from the base texture.
if ((texture->GetInternalUsage() & kShaderUsageNeedsView) == 0) {
return false;
}
if (texture->GetArrayLayers() != textureViewDescriptor->arrayLayerCount ||
(texture->GetArrayLayers() == 1 && texture->GetDimension() == wgpu::TextureDimension::e2D &&
textureViewDescriptor->dimension == wgpu::TextureViewDimension::e2DArray)) {
// If the view has a different number of array layers, we need a new view.
// And, if the original texture is a 2D texture with one array layer, we need a new
// view to view it as a 2D array texture.
return true;
}
if (texture->GetNumMipLevels() != textureViewDescriptor->mipLevelCount) {
return true;
}
// If the texture is created with MTLTextureUsagePixelFormatView, we need
// a new view to perform format reinterpretation.
if ((MetalTextureUsage(texture->GetFormat(), texture->GetInternalUsage()) &
MTLTextureUsagePixelFormatView) != 0) {
return true;
}
switch (textureViewDescriptor->dimension) {
case wgpu::TextureViewDimension::Cube:
case wgpu::TextureViewDimension::CubeArray:
return true;
default:
break;
}
return false;
}
// Metal only allows format reinterpretation to happen on swizzle pattern or conversion
// between linear space and sRGB without setting MTLTextureUsagePixelFormatView flag. For
// example, creating bgra8Unorm texture view on rgba8Unorm texture or creating
// rgba8Unorm_srgb texture view on rgab8Unorm texture.
bool AllowFormatReinterpretationWithoutFlag(MTLPixelFormat origin,
MTLPixelFormat reinterpretation) {
#define SRGB_PAIR(a, b) \
case a: \
return reinterpretation == b; \
case b: \
return reinterpretation == a
switch (origin) {
case MTLPixelFormatRGBA8Unorm:
return reinterpretation == MTLPixelFormatBGRA8Unorm ||
reinterpretation == MTLPixelFormatRGBA8Unorm_sRGB;
case MTLPixelFormatBGRA8Unorm:
return reinterpretation == MTLPixelFormatRGBA8Unorm ||
reinterpretation == MTLPixelFormatBGRA8Unorm_sRGB;
case MTLPixelFormatRGBA8Unorm_sRGB:
return reinterpretation == MTLPixelFormatBGRA8Unorm_sRGB ||
reinterpretation == MTLPixelFormatRGBA8Unorm;
case MTLPixelFormatBGRA8Unorm_sRGB:
return reinterpretation == MTLPixelFormatRGBA8Unorm_sRGB ||
reinterpretation == MTLPixelFormatBGRA8Unorm;
#if DAWN_PLATFORM_IS(MACOS)
SRGB_PAIR(MTLPixelFormatBC1_RGBA, MTLPixelFormatBC1_RGBA_sRGB);
SRGB_PAIR(MTLPixelFormatBC2_RGBA, MTLPixelFormatBC2_RGBA_sRGB);
SRGB_PAIR(MTLPixelFormatBC3_RGBA, MTLPixelFormatBC3_RGBA_sRGB);
SRGB_PAIR(MTLPixelFormatBC7_RGBAUnorm, MTLPixelFormatBC7_RGBAUnorm_sRGB);
#endif
default:
if (@available(macOS 11.0, iOS 8.0, *)) {
switch (origin) {
SRGB_PAIR(MTLPixelFormatEAC_RGBA8, MTLPixelFormatEAC_RGBA8_sRGB);
SRGB_PAIR(MTLPixelFormatETC2_RGB8, MTLPixelFormatETC2_RGB8_sRGB);
SRGB_PAIR(MTLPixelFormatETC2_RGB8A1, MTLPixelFormatETC2_RGB8A1_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_4x4_LDR, MTLPixelFormatASTC_4x4_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_5x4_LDR, MTLPixelFormatASTC_5x4_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_5x5_LDR, MTLPixelFormatASTC_5x5_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_6x5_LDR, MTLPixelFormatASTC_6x5_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_6x6_LDR, MTLPixelFormatASTC_6x6_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_8x5_LDR, MTLPixelFormatASTC_8x5_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_8x6_LDR, MTLPixelFormatASTC_8x6_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_8x8_LDR, MTLPixelFormatASTC_8x8_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_10x5_LDR, MTLPixelFormatASTC_10x5_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_10x6_LDR, MTLPixelFormatASTC_10x6_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_10x8_LDR, MTLPixelFormatASTC_10x8_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_10x10_LDR, MTLPixelFormatASTC_10x10_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_12x10_LDR, MTLPixelFormatASTC_12x10_sRGB);
SRGB_PAIR(MTLPixelFormatASTC_12x12_LDR, MTLPixelFormatASTC_12x12_sRGB);
default:
break;
}
}
return false;
}
#undef SRGB_PAIR
}
ResultOrError<wgpu::TextureFormat> GetFormatEquivalentToIOSurfaceFormat(uint32_t format) {
switch (format) {
case kCVPixelFormatType_64RGBAHalf:
return wgpu::TextureFormat::RGBA16Float;
case kCVPixelFormatType_TwoComponent16Half:
return wgpu::TextureFormat::RG16Float;
case kCVPixelFormatType_OneComponent16Half:
return wgpu::TextureFormat::R16Float;
case kCVPixelFormatType_ARGB2101010LEPacked:
return wgpu::TextureFormat::RGB10A2Unorm;
case kCVPixelFormatType_32RGBA:
return wgpu::TextureFormat::RGBA8Unorm;
case kCVPixelFormatType_32BGRA:
return wgpu::TextureFormat::BGRA8Unorm;
case kCVPixelFormatType_TwoComponent8:
return wgpu::TextureFormat::RG8Unorm;
case kCVPixelFormatType_OneComponent8:
return wgpu::TextureFormat::R8Unorm;
case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
return wgpu::TextureFormat::R8BG8Biplanar420Unorm;
default:
return DAWN_VALIDATION_ERROR("Unsupported IOSurface format (%x).", format);
}
}
uint32_t GetIOSurfacePlane(wgpu::TextureAspect aspect) {
switch (aspect) {
case wgpu::TextureAspect::Plane0Only:
return 0;
case wgpu::TextureAspect::Plane1Only:
return 1;
default:
UNREACHABLE();
}
}
#if DAWN_PLATFORM_IS(MACOS)
MTLStorageMode kIOSurfaceStorageMode = MTLStorageModeManaged;
#elif DAWN_PLATFORM_IS(IOS)
MTLStorageMode kIOSurfaceStorageMode = MTLStorageModePrivate;
#else
#error "Unsupported Apple platform."
#endif
} // namespace
MTLPixelFormat MetalPixelFormat(const DeviceBase* device, wgpu::TextureFormat format) {
switch (format) {
case wgpu::TextureFormat::R8Unorm:
return MTLPixelFormatR8Unorm;
case wgpu::TextureFormat::R8Snorm:
return MTLPixelFormatR8Snorm;
case wgpu::TextureFormat::R8Uint:
return MTLPixelFormatR8Uint;
case wgpu::TextureFormat::R8Sint:
return MTLPixelFormatR8Sint;
case wgpu::TextureFormat::R16Uint:
return MTLPixelFormatR16Uint;
case wgpu::TextureFormat::R16Sint:
return MTLPixelFormatR16Sint;
case wgpu::TextureFormat::R16Float:
return MTLPixelFormatR16Float;
case wgpu::TextureFormat::RG8Unorm:
return MTLPixelFormatRG8Unorm;
case wgpu::TextureFormat::RG8Snorm:
return MTLPixelFormatRG8Snorm;
case wgpu::TextureFormat::RG8Uint:
return MTLPixelFormatRG8Uint;
case wgpu::TextureFormat::RG8Sint:
return MTLPixelFormatRG8Sint;
case wgpu::TextureFormat::R32Uint:
return MTLPixelFormatR32Uint;
case wgpu::TextureFormat::R32Sint:
return MTLPixelFormatR32Sint;
case wgpu::TextureFormat::R32Float:
return MTLPixelFormatR32Float;
case wgpu::TextureFormat::RG16Uint:
return MTLPixelFormatRG16Uint;
case wgpu::TextureFormat::RG16Sint:
return MTLPixelFormatRG16Sint;
case wgpu::TextureFormat::RG16Float:
return MTLPixelFormatRG16Float;
case wgpu::TextureFormat::RGBA8Unorm:
return MTLPixelFormatRGBA8Unorm;
case wgpu::TextureFormat::RGBA8UnormSrgb:
return MTLPixelFormatRGBA8Unorm_sRGB;
case wgpu::TextureFormat::RGBA8Snorm:
return MTLPixelFormatRGBA8Snorm;
case wgpu::TextureFormat::RGBA8Uint:
return MTLPixelFormatRGBA8Uint;
case wgpu::TextureFormat::RGBA8Sint:
return MTLPixelFormatRGBA8Sint;
case wgpu::TextureFormat::BGRA8Unorm:
return MTLPixelFormatBGRA8Unorm;
case wgpu::TextureFormat::BGRA8UnormSrgb:
return MTLPixelFormatBGRA8Unorm_sRGB;
case wgpu::TextureFormat::RGB10A2Unorm:
return MTLPixelFormatRGB10A2Unorm;
case wgpu::TextureFormat::RG11B10Ufloat:
return MTLPixelFormatRG11B10Float;
case wgpu::TextureFormat::RGB9E5Ufloat:
return MTLPixelFormatRGB9E5Float;
case wgpu::TextureFormat::RG32Uint:
return MTLPixelFormatRG32Uint;
case wgpu::TextureFormat::RG32Sint:
return MTLPixelFormatRG32Sint;
case wgpu::TextureFormat::RG32Float:
return MTLPixelFormatRG32Float;
case wgpu::TextureFormat::RGBA16Uint:
return MTLPixelFormatRGBA16Uint;
case wgpu::TextureFormat::RGBA16Sint:
return MTLPixelFormatRGBA16Sint;
case wgpu::TextureFormat::RGBA16Float:
return MTLPixelFormatRGBA16Float;
case wgpu::TextureFormat::RGBA32Uint:
return MTLPixelFormatRGBA32Uint;
case wgpu::TextureFormat::RGBA32Sint:
return MTLPixelFormatRGBA32Sint;
case wgpu::TextureFormat::RGBA32Float:
return MTLPixelFormatRGBA32Float;
case wgpu::TextureFormat::Depth32Float:
return MTLPixelFormatDepth32Float;
case wgpu::TextureFormat::Depth24Plus:
return MTLPixelFormatDepth32Float;
case wgpu::TextureFormat::Depth24PlusStencil8:
case wgpu::TextureFormat::Depth32FloatStencil8:
return MTLPixelFormatDepth32Float_Stencil8;
case wgpu::TextureFormat::Depth16Unorm:
if (@available(macOS 10.12, iOS 13.0, *)) {
return MTLPixelFormatDepth16Unorm;
}
UNREACHABLE();
case wgpu::TextureFormat::Stencil8:
if (device->IsToggleEnabled(Toggle::MetalUseCombinedDepthStencilFormatForStencil8)) {
return MTLPixelFormatDepth32Float_Stencil8;
}
return MTLPixelFormatStencil8;
#if DAWN_PLATFORM_IS(MACOS)
case wgpu::TextureFormat::BC1RGBAUnorm:
return MTLPixelFormatBC1_RGBA;
case wgpu::TextureFormat::BC1RGBAUnormSrgb:
return MTLPixelFormatBC1_RGBA_sRGB;
case wgpu::TextureFormat::BC2RGBAUnorm:
return MTLPixelFormatBC2_RGBA;
case wgpu::TextureFormat::BC2RGBAUnormSrgb:
return MTLPixelFormatBC2_RGBA_sRGB;
case wgpu::TextureFormat::BC3RGBAUnorm:
return MTLPixelFormatBC3_RGBA;
case wgpu::TextureFormat::BC3RGBAUnormSrgb:
return MTLPixelFormatBC3_RGBA_sRGB;
case wgpu::TextureFormat::BC4RSnorm:
return MTLPixelFormatBC4_RSnorm;
case wgpu::TextureFormat::BC4RUnorm:
return MTLPixelFormatBC4_RUnorm;
case wgpu::TextureFormat::BC5RGSnorm:
return MTLPixelFormatBC5_RGSnorm;
case wgpu::TextureFormat::BC5RGUnorm:
return MTLPixelFormatBC5_RGUnorm;
case wgpu::TextureFormat::BC6HRGBFloat:
return MTLPixelFormatBC6H_RGBFloat;
case wgpu::TextureFormat::BC6HRGBUfloat:
return MTLPixelFormatBC6H_RGBUfloat;
case wgpu::TextureFormat::BC7RGBAUnorm:
return MTLPixelFormatBC7_RGBAUnorm;
case wgpu::TextureFormat::BC7RGBAUnormSrgb:
return MTLPixelFormatBC7_RGBAUnorm_sRGB;
#else
case wgpu::TextureFormat::BC1RGBAUnorm:
case wgpu::TextureFormat::BC1RGBAUnormSrgb:
case wgpu::TextureFormat::BC2RGBAUnorm:
case wgpu::TextureFormat::BC2RGBAUnormSrgb:
case wgpu::TextureFormat::BC3RGBAUnorm:
case wgpu::TextureFormat::BC3RGBAUnormSrgb:
case wgpu::TextureFormat::BC4RSnorm:
case wgpu::TextureFormat::BC4RUnorm:
case wgpu::TextureFormat::BC5RGSnorm:
case wgpu::TextureFormat::BC5RGUnorm:
case wgpu::TextureFormat::BC6HRGBFloat:
case wgpu::TextureFormat::BC6HRGBUfloat:
case wgpu::TextureFormat::BC7RGBAUnorm:
case wgpu::TextureFormat::BC7RGBAUnormSrgb:
#endif
case wgpu::TextureFormat::ETC2RGB8Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatETC2_RGB8;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ETC2RGB8UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatETC2_RGB8_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ETC2RGB8A1Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatETC2_RGB8A1;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ETC2RGB8A1UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatETC2_RGB8A1_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ETC2RGBA8Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatEAC_RGBA8;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ETC2RGBA8UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatEAC_RGBA8_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::EACR11Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatEAC_R11Unorm;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::EACR11Snorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatEAC_R11Snorm;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::EACRG11Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatEAC_RG11Unorm;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::EACRG11Snorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatEAC_RG11Snorm;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC4x4Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_4x4_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC4x4UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_4x4_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC5x4Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_5x4_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC5x4UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_5x4_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC5x5Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_5x5_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC5x5UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_5x5_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC6x5Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_6x5_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC6x5UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_6x5_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC6x6Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_6x6_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC6x6UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_6x6_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC8x5Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_8x5_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC8x5UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_8x5_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC8x6Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_8x6_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC8x6UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_8x6_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC8x8Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_8x8_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC8x8UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_8x8_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x5Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x5_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x5UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x5_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x6Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x6_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x6UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x6_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x8Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x8_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x8UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x8_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x10Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x10_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC10x10UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_10x10_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC12x10Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_12x10_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC12x10UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_12x10_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC12x12Unorm:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_12x12_LDR;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::ASTC12x12UnormSrgb:
if (@available(macOS 11.0, iOS 8.0, *)) {
return MTLPixelFormatASTC_12x12_sRGB;
} else {
UNREACHABLE();
}
case wgpu::TextureFormat::R8BG8Biplanar420Unorm:
case wgpu::TextureFormat::Undefined:
UNREACHABLE();
}
}
MaybeError ValidateIOSurfaceCanBeWrapped(const DeviceBase*,
const TextureDescriptor* descriptor,
IOSurfaceRef ioSurface) {
DAWN_INVALID_IF(descriptor->dimension != wgpu::TextureDimension::e2D,
"Texture dimension (%s) is not %s.", descriptor->dimension,
wgpu::TextureDimension::e2D);
DAWN_INVALID_IF(descriptor->mipLevelCount != 1, "Mip level count (%u) is not 1.",
descriptor->mipLevelCount);
DAWN_INVALID_IF(descriptor->size.depthOrArrayLayers != 1, "Array layer count (%u) is not 1.",
descriptor->size.depthOrArrayLayers);
DAWN_INVALID_IF(descriptor->sampleCount != 1, "Sample count (%u) is not 1.",
descriptor->sampleCount);
uint32_t surfaceWidth = IOSurfaceGetWidth(ioSurface);
uint32_t surfaceHeight = IOSurfaceGetHeight(ioSurface);
DAWN_INVALID_IF(
descriptor->size.width != surfaceWidth || descriptor->size.height != surfaceHeight ||
descriptor->size.depthOrArrayLayers != 1,
"IOSurface size (width: %u, height %u, depth: 1) doesn't match descriptor size %s.",
surfaceWidth, surfaceHeight, &descriptor->size);
wgpu::TextureFormat ioSurfaceFormat;
DAWN_TRY_ASSIGN(ioSurfaceFormat,
GetFormatEquivalentToIOSurfaceFormat(IOSurfaceGetPixelFormat(ioSurface)));
DAWN_INVALID_IF(descriptor->format != ioSurfaceFormat,
"IOSurface format (%s) doesn't match the descriptor format (%s).",
ioSurfaceFormat, descriptor->format);
return {};
}
NSRef<MTLTextureDescriptor> Texture::CreateMetalTextureDescriptor() const {
NSRef<MTLTextureDescriptor> mtlDescRef = AcquireNSRef([MTLTextureDescriptor new]);
MTLTextureDescriptor* mtlDesc = mtlDescRef.Get();
mtlDesc.width = GetWidth();
mtlDesc.sampleCount = GetSampleCount();
// Metal only allows format reinterpretation to happen on swizzle pattern or conversion
// between linear space and sRGB. For example, creating bgra8Unorm texture view on
// rgba8Unorm texture or creating rgba8Unorm_srgb texture view on rgab8Unorm texture.
mtlDesc.usage = MetalTextureUsage(GetFormat(), GetInternalUsage());
mtlDesc.pixelFormat = MetalPixelFormat(GetDevice(), GetFormat().format);
if (GetDevice()->IsToggleEnabled(Toggle::MetalUseCombinedDepthStencilFormatForStencil8) &&
GetFormat().format == wgpu::TextureFormat::Stencil8) {
// If we used a combined depth stencil format instead of stencil8, we need
// MTLTextureUsagePixelFormatView to reinterpet as stencil8.
mtlDesc.usage |= MTLTextureUsagePixelFormatView;
}
mtlDesc.mipmapLevelCount = GetNumMipLevels();
// Create the texture in private storage mode unless the client has
// specified that this texture is for a transient attachment, in which case
// the texture should be created in memoryless storage mode.
mtlDesc.storageMode = MTLStorageModePrivate;
if (@available(macOS 11.0, iOS 10.0, *)) {
if (GetInternalUsage() & wgpu::TextureUsage::TransientAttachment) {
mtlDesc.storageMode = MTLStorageModeMemoryless;
}
}
// Choose the correct MTLTextureType and paper over differences in how the array layer count
// is specified.
switch (GetDimension()) {
case wgpu::TextureDimension::e1D:
mtlDesc.arrayLength = 1;
mtlDesc.depth = 1;
ASSERT(mtlDesc.sampleCount == 1);
mtlDesc.textureType = MTLTextureType1D;
break;
case wgpu::TextureDimension::e2D:
mtlDesc.height = GetHeight();
mtlDesc.arrayLength = GetArrayLayers();
mtlDesc.depth = 1;
if (mtlDesc.arrayLength > 1) {
ASSERT(mtlDesc.sampleCount == 1);
mtlDesc.textureType = MTLTextureType2DArray;
} else if (mtlDesc.sampleCount > 1) {
mtlDesc.textureType = MTLTextureType2DMultisample;
} else {
mtlDesc.textureType = MTLTextureType2D;
}
break;
case wgpu::TextureDimension::e3D:
mtlDesc.height = GetHeight();
mtlDesc.depth = GetDepth();
mtlDesc.arrayLength = 1;
ASSERT(mtlDesc.sampleCount == 1);
mtlDesc.textureType = MTLTextureType3D;
break;
}
return mtlDescRef;
}
// static
ResultOrError<Ref<Texture>> Texture::Create(Device* device, const TextureDescriptor* descriptor) {
Ref<Texture> texture = AcquireRef(new Texture(device, descriptor, TextureState::OwnedInternal));
DAWN_TRY(texture->InitializeAsInternalTexture(descriptor));
return texture;
}
// static
ResultOrError<Ref<Texture>> Texture::CreateFromIOSurface(
Device* device,
const ExternalImageDescriptor* descriptor,
IOSurfaceRef ioSurface,
std::vector<MTLSharedEventAndSignalValue> waitEvents) {
const TextureDescriptor* textureDescriptor = FromAPI(descriptor->cTextureDescriptor);
Ref<Texture> texture =
AcquireRef(new Texture(device, textureDescriptor, TextureState::OwnedExternal));
DAWN_TRY(texture->InitializeFromIOSurface(descriptor, textureDescriptor, ioSurface,
std::move(waitEvents)));
return texture;
}
// static
Ref<Texture> Texture::CreateWrapping(Device* device,
const TextureDescriptor* descriptor,
NSPRef<id<MTLTexture>> wrapped) {
Ref<Texture> texture = AcquireRef(new Texture(device, descriptor, TextureState::OwnedInternal));
texture->InitializeAsWrapping(descriptor, std::move(wrapped));
return texture;
}
MaybeError Texture::InitializeAsInternalTexture(const TextureDescriptor* descriptor) {
Device* device = ToBackend(GetDevice());
NSRef<MTLTextureDescriptor> mtlDesc = CreateMetalTextureDescriptor();
mMtlUsage = [*mtlDesc usage];
mMtlTexture = AcquireNSPRef([device->GetMTLDevice() newTextureWithDescriptor:mtlDesc.Get()]);
if (mMtlTexture == nil) {
return DAWN_OUT_OF_MEMORY_ERROR("Failed to allocate texture.");
}
SetLabelImpl();
if (device->IsToggleEnabled(Toggle::NonzeroClearResourcesOnCreationForTesting)) {
DAWN_TRY(ClearTexture(device->GetPendingCommandContext(), GetAllSubresources(),
TextureBase::ClearValue::NonZero));
} else if (ShouldKeepInitialized()) {
DAWN_TRY(ClearTexture(device->GetPendingCommandContext(), GetAllSubresources(),
TextureBase::ClearValue::Zero));
}
return {};
}
void Texture::InitializeAsWrapping(const TextureDescriptor* descriptor,
NSPRef<id<MTLTexture>> wrapped) {
NSRef<MTLTextureDescriptor> mtlDesc = CreateMetalTextureDescriptor();
mMtlUsage = [*mtlDesc usage];
mMtlTexture = std::move(wrapped);
SetLabelImpl();
}
MaybeError Texture::InitializeFromIOSurface(const ExternalImageDescriptor* descriptor,
const TextureDescriptor* textureDescriptor,
IOSurfaceRef ioSurface,
std::vector<MTLSharedEventAndSignalValue> waitEvents) {
DAWN_INVALID_IF(
GetInternalUsage() & wgpu::TextureUsage::TransientAttachment,
"Usage flags (%s) include %s, which is not compatible with creation from IOSurface.",
GetInternalUsage(), wgpu::TextureUsage::TransientAttachment);
mIOSurface = ioSurface;
mWaitEvents = std::move(waitEvents);
// Uses WGPUTexture which wraps multiplanar ioSurface needs to create
// texture view explicitly. Wrap the ioSurface and delay to extract
// MTLTexture from the plane of it when creating texture view.
// WGPUTexture which wraps non-multplanar ioSurface needs to support
// ops that doesn't require creating texture view(e.g. copy). Extract
// MTLTexture from such ioSurface to support this.
if (!GetFormat().IsMultiPlanar()) {
Device* device = ToBackend(GetDevice());
NSRef<MTLTextureDescriptor> mtlDesc = CreateMetalTextureDescriptor();
[*mtlDesc setStorageMode:kIOSurfaceStorageMode];
mMtlUsage = [*mtlDesc usage];
mMtlTexture = AcquireNSPRef([device->GetMTLDevice() newTextureWithDescriptor:mtlDesc.Get()
iosurface:ioSurface
plane:0]);
SetLabelImpl();
}
SetIsSubresourceContentInitialized(descriptor->isInitialized, GetAllSubresources());
return {};
}
void Texture::SynchronizeTextureBeforeUse(CommandRecordingContext* commandContext) {
if (@available(macOS 10.14, *)) {
if (!mWaitEvents.empty()) {
// There may be an open blit encoder from a copy command or writeBuffer.
// Wait events are only allowed if there is no encoder open.
commandContext->EndBlit();
}
auto commandBuffer = commandContext->GetCommands();
// Consume the wait events on the texture. They will be empty after this loop.
for (auto waitEvent : std::move(mWaitEvents)) {
id rawEvent = *waitEvent.sharedEvent;
id<MTLSharedEvent> sharedEvent = static_cast<id<MTLSharedEvent>>(rawEvent);
[commandBuffer encodeWaitForEvent:sharedEvent value:waitEvent.signaledValue];
}
}
}
void Texture::IOSurfaceEndAccess(ExternalImageIOSurfaceEndAccessDescriptor* descriptor) {
ASSERT(descriptor);
ToBackend(GetDevice())->ExportLastSignaledEvent(descriptor);
descriptor->isInitialized = IsSubresourceContentInitialized(GetAllSubresources());
// Destroy the texture as it should not longer be used after EndAccess.
Destroy();
}
Texture::Texture(DeviceBase* dev, const TextureDescriptor* desc, TextureState st)
: TextureBase(dev, desc, st) {}
Texture::~Texture() {}
void Texture::DestroyImpl() {
TextureBase::DestroyImpl();
mMtlTexture = nullptr;
mIOSurface = nullptr;
}
void Texture::SetLabelImpl() {
SetDebugName(GetDevice(), mMtlTexture.Get(), "Dawn_Texture", GetLabel());
}
id<MTLTexture> Texture::GetMTLTexture() const {
return mMtlTexture.Get();
}
IOSurfaceRef Texture::GetIOSurface() {
return mIOSurface.Get();
}
NSPRef<id<MTLTexture>> Texture::CreateFormatView(wgpu::TextureFormat format) {
if (GetFormat().format == format) {
return mMtlTexture;
}
ASSERT(AllowFormatReinterpretationWithoutFlag(MetalPixelFormat(GetDevice(), GetFormat().format),
MetalPixelFormat(GetDevice(), format)));
return AcquireNSPRef(
[mMtlTexture.Get() newTextureViewWithPixelFormat:MetalPixelFormat(GetDevice(), format)]);
}
bool Texture::ShouldKeepInitialized() const {
return GetDevice()->IsToggleEnabled(Toggle::LazyClearResourceOnFirstUse) &&
GetDevice()->IsToggleEnabled(
Toggle::MetalKeepMultisubresourceDepthStencilTexturesInitialized) &&
GetFormat().HasDepthOrStencil() && (GetArrayLayers() > 1 || GetNumMipLevels() > 1);
}
MaybeError Texture::ClearTexture(CommandRecordingContext* commandContext,
const SubresourceRange& range,
TextureBase::ClearValue clearValue) {
Device* device = ToBackend(GetDevice());
const uint8_t clearColor = (clearValue == TextureBase::ClearValue::Zero) ? 0 : 1;
const double dClearColor = (clearValue == TextureBase::ClearValue::Zero) ? 0.0 : 1.0;
if ((mMtlUsage & MTLTextureUsageRenderTarget) != 0) {
ASSERT(GetFormat().isRenderable);
// End the blit encoder if it is open.
commandContext->EndBlit();
if (GetFormat().HasDepthOrStencil()) {
// Create a render pass to clear each subresource.
for (uint32_t level = range.baseMipLevel; level < range.baseMipLevel + range.levelCount;
++level) {
for (uint32_t arrayLayer = range.baseArrayLayer;
arrayLayer < range.baseArrayLayer + range.layerCount; arrayLayer++) {
if (clearValue == TextureBase::ClearValue::Zero &&
IsSubresourceContentInitialized(SubresourceRange::SingleMipAndLayer(
level, arrayLayer, range.aspects))) {
// Skip lazy clears if already initialized.
continue;
}
// Note that this creates a descriptor that's autoreleased so we don't use
// AcquireNSRef
NSRef<MTLRenderPassDescriptor> descriptorRef =
[MTLRenderPassDescriptor renderPassDescriptor];
MTLRenderPassDescriptor* descriptor = descriptorRef.Get();
// At least one aspect needs clearing. Iterate the aspects individually to
// determine which to clear.
for (Aspect aspect : IterateEnumMask(range.aspects)) {
if (clearValue == TextureBase::ClearValue::Zero &&
IsSubresourceContentInitialized(
SubresourceRange::SingleMipAndLayer(level, arrayLayer, aspect))) {
// Skip lazy clears if already initialized.
continue;
}
ASSERT(GetDimension() == wgpu::TextureDimension::e2D);
switch (aspect) {
case Aspect::Depth:
descriptor.depthAttachment.texture = GetMTLTexture();
descriptor.depthAttachment.level = level;
descriptor.depthAttachment.slice = arrayLayer;
descriptor.depthAttachment.loadAction = MTLLoadActionClear;
descriptor.depthAttachment.storeAction = MTLStoreActionStore;
descriptor.depthAttachment.clearDepth = dClearColor;
break;
case Aspect::Stencil:
descriptor.stencilAttachment.texture = GetMTLTexture();
descriptor.stencilAttachment.level = level;
descriptor.stencilAttachment.slice = arrayLayer;
descriptor.stencilAttachment.loadAction = MTLLoadActionClear;
descriptor.stencilAttachment.storeAction = MTLStoreActionStore;
descriptor.stencilAttachment.clearStencil =
static_cast<uint32_t>(clearColor);
break;
default:
UNREACHABLE();
}
}
DAWN_TRY(
EncodeEmptyMetalRenderPass(device, commandContext, descriptor,
GetMipLevelSingleSubresourceVirtualSize(level)));
}
}
} else {
ASSERT(GetFormat().IsColor());
for (uint32_t level = range.baseMipLevel; level < range.baseMipLevel + range.levelCount;
++level) {
// Create multiple render passes with each subresource as a color attachment to
// clear them all. Only do this for array layers to ensure all attachments have
// the same size.
NSRef<MTLRenderPassDescriptor> descriptor;
uint32_t attachment = 0;
uint32_t depth = GetMipLevelSingleSubresourceVirtualSize(level).depthOrArrayLayers;
for (uint32_t arrayLayer = range.baseArrayLayer;
arrayLayer < range.baseArrayLayer + range.layerCount; arrayLayer++) {
if (clearValue == TextureBase::ClearValue::Zero &&
IsSubresourceContentInitialized(SubresourceRange::SingleMipAndLayer(
level, arrayLayer, Aspect::Color))) {
// Skip lazy clears if already initialized.
continue;
}
for (uint32_t z = 0; z < depth; ++z) {
if (descriptor == nullptr) {
// Note that this creates a descriptor that's autoreleased so we
// don't use AcquireNSRef
descriptor = [MTLRenderPassDescriptor renderPassDescriptor];
}
[*descriptor colorAttachments][attachment].texture = GetMTLTexture();
[*descriptor colorAttachments][attachment].loadAction = MTLLoadActionClear;
[*descriptor colorAttachments][attachment].storeAction =
MTLStoreActionStore;
[*descriptor colorAttachments][attachment].clearColor =
MTLClearColorMake(dClearColor, dClearColor, dClearColor, dClearColor);
[*descriptor colorAttachments][attachment].level = level;
[*descriptor colorAttachments][attachment].slice = arrayLayer;
[*descriptor colorAttachments][attachment].depthPlane = z;
attachment++;
if (attachment == kMaxColorAttachments) {
attachment = 0;
DAWN_TRY(EncodeEmptyMetalRenderPass(
device, commandContext, descriptor.Get(),
GetMipLevelSingleSubresourceVirtualSize(level)));
descriptor = nullptr;
}
}
}
if (descriptor != nullptr) {
DAWN_TRY(
EncodeEmptyMetalRenderPass(device, commandContext, descriptor.Get(),
GetMipLevelSingleSubresourceVirtualSize(level)));
}
}
}
} else {
ASSERT(!IsMultisampledTexture());
// Encode a buffer to texture copy to clear each subresource.
for (Aspect aspect : IterateEnumMask(range.aspects)) {
// Compute the buffer size big enough to fill the largest mip.
const TexelBlockInfo& blockInfo = GetFormat().GetAspectInfo(aspect).block;
// Computations for the bytes per row / image height are done using the physical size
// so that enough data is reserved for compressed textures.
Extent3D largestMipSize = GetMipLevelSingleSubresourcePhysicalSize(range.baseMipLevel);
uint32_t largestMipBytesPerRow =
(largestMipSize.width / blockInfo.width) * blockInfo.byteSize;
uint64_t largestMipBytesPerImage = static_cast<uint64_t>(largestMipBytesPerRow) *
(largestMipSize.height / blockInfo.height);
uint64_t bufferSize = largestMipBytesPerImage * largestMipSize.depthOrArrayLayers;
if (bufferSize > std::numeric_limits<NSUInteger>::max()) {
return DAWN_OUT_OF_MEMORY_ERROR("Unable to allocate buffer.");
}
DynamicUploader* uploader = device->GetDynamicUploader();
UploadHandle uploadHandle;
DAWN_TRY_ASSIGN(uploadHandle,
uploader->Allocate(bufferSize, device->GetPendingCommandSerial(),
blockInfo.byteSize));
memset(uploadHandle.mappedBuffer, clearColor, bufferSize);
id<MTLBuffer> uploadBuffer = ToBackend(uploadHandle.stagingBuffer)->GetMTLBuffer();
for (uint32_t level = range.baseMipLevel; level < range.baseMipLevel + range.levelCount;
++level) {
Extent3D virtualSize = GetMipLevelSingleSubresourceVirtualSize(level);
for (uint32_t arrayLayer = range.baseArrayLayer;
arrayLayer < range.baseArrayLayer + range.layerCount; ++arrayLayer) {
if (clearValue == TextureBase::ClearValue::Zero &&
IsSubresourceContentInitialized(
SubresourceRange::SingleMipAndLayer(level, arrayLayer, aspect))) {
// Skip lazy clears if already initialized.
continue;
}
MTLBlitOption blitOption = ComputeMTLBlitOption(aspect);
[commandContext->EnsureBlit()
copyFromBuffer:uploadBuffer
sourceOffset:uploadHandle.startOffset
sourceBytesPerRow:largestMipBytesPerRow
sourceBytesPerImage:largestMipBytesPerImage
sourceSize:MTLSizeMake(virtualSize.width, virtualSize.height,
virtualSize.depthOrArrayLayers)
toTexture:GetMTLTexture()
destinationSlice:arrayLayer
destinationLevel:level
destinationOrigin:MTLOriginMake(0, 0, 0)
options:blitOption];
}
}
}
}
return {};
}
MTLBlitOption Texture::ComputeMTLBlitOption(Aspect aspect) const {
ASSERT(HasOneBit(aspect));
ASSERT(GetFormat().aspects & aspect);
MTLPixelFormat format = MetalPixelFormat(GetDevice(), GetFormat().format);
if (format == MTLPixelFormatDepth32Float_Stencil8) {
// We only provide a blit option if the format has both depth and stencil.
// It is invalid to provide a blit option otherwise.
switch (aspect) {
case Aspect::Depth:
return MTLBlitOptionDepthFromDepthStencil;
case Aspect::Stencil:
return MTLBlitOptionStencilFromDepthStencil;
default:
UNREACHABLE();
}
}
return MTLBlitOptionNone;
}
MaybeError Texture::EnsureSubresourceContentInitialized(CommandRecordingContext* commandContext,
const SubresourceRange& range) {
if (!GetDevice()->IsToggleEnabled(Toggle::LazyClearResourceOnFirstUse)) {
return {};
}
if (!IsSubresourceContentInitialized(range)) {
// If subresource has not been initialized, clear it to black as it could
// contain dirty bits from recycled memory
DAWN_TRY(ClearTexture(commandContext, range, TextureBase::ClearValue::Zero));
SetIsSubresourceContentInitialized(true, range);
GetDevice()->IncrementLazyClearCountForTesting();
}
return {};
}
// static
ResultOrError<Ref<TextureView>> TextureView::Create(TextureBase* texture,
const TextureViewDescriptor* descriptor) {
Ref<TextureView> view = AcquireRef(new TextureView(texture, descriptor));
DAWN_TRY(view->Initialize(descriptor));
return view;
}
MaybeError TextureView::Initialize(const TextureViewDescriptor* descriptor) {
DeviceBase* device = GetDevice();
Texture* texture = ToBackend(GetTexture());
// Texture could be destroyed by the time we make a view.
if (GetTexture()->GetTextureState() == Texture::TextureState::Destroyed) {
return {};
}
id<MTLTexture> mtlTexture = texture->GetMTLTexture();
bool needsNewView = RequiresCreatingNewTextureView(texture, descriptor);
if (device->IsToggleEnabled(Toggle::MetalUseCombinedDepthStencilFormatForStencil8) &&
GetTexture()->GetFormat().format == wgpu::TextureFormat::Stencil8) {
// If MetalUseCombinedDepthStencilFormatForStencil8 is true and the format is Stencil8,
// we used a combined format instead on texture allocation.
// We need a new view to view it as stencil8.
needsNewView = true;
}
if (!needsNewView) {
mMtlTextureView = mtlTexture;
} else if (texture->GetFormat().IsMultiPlanar()) {
NSRef<MTLTextureDescriptor> mtlDescRef = AcquireNSRef([MTLTextureDescriptor new]);
MTLTextureDescriptor* mtlDesc = mtlDescRef.Get();
mtlDesc.sampleCount = texture->GetSampleCount();
mtlDesc.usage = MetalTextureUsage(texture->GetFormat(), texture->GetInternalUsage());
mtlDesc.pixelFormat = MetalPixelFormat(device, descriptor->format);
mtlDesc.mipmapLevelCount = texture->GetNumMipLevels();
mtlDesc.storageMode = kIOSurfaceStorageMode;
uint32_t plane = GetIOSurfacePlane(descriptor->aspect);
mtlDesc.width = IOSurfaceGetWidthOfPlane(texture->GetIOSurface(), plane);
mtlDesc.height = IOSurfaceGetHeightOfPlane(texture->GetIOSurface(), plane);
// Multiplanar texture is validated to only have single layer, single mipLevel
// and 2d textures (depth == 1)
ASSERT(texture->GetArrayLayers() == 1 &&
texture->GetDimension() == wgpu::TextureDimension::e2D &&
texture->GetNumMipLevels() == 1);
mtlDesc.arrayLength = 1;
mtlDesc.depth = 1;
mMtlTextureView = AcquireNSPRef([ToBackend(GetDevice())->GetMTLDevice()
newTextureWithDescriptor:mtlDesc
iosurface:texture->GetIOSurface()
plane:plane]);
if (mMtlTextureView == nil) {
return DAWN_INTERNAL_ERROR("Failed to create MTLTexture view for external texture.");
}
} else {
MTLPixelFormat viewFormat = MetalPixelFormat(device, descriptor->format);
MTLPixelFormat textureFormat = MetalPixelFormat(device, GetTexture()->GetFormat().format);
Aspect aspect = SelectFormatAspects(GetFormat(), descriptor->aspect);
if (aspect == Aspect::Stencil && textureFormat != MTLPixelFormatStencil8) {
ASSERT(textureFormat == MTLPixelFormatDepth32Float_Stencil8);
viewFormat = MTLPixelFormatX32_Stencil8;
} else if (GetTexture()->GetFormat().HasDepth() && GetTexture()->GetFormat().HasStencil()) {
// Depth-only views for depth/stencil textures in Metal simply use the original
// texture's format.
viewFormat = textureFormat;
}
MTLTextureType textureViewType =
MetalTextureViewType(descriptor->dimension, texture->GetSampleCount());
auto mipLevelRange = NSMakeRange(descriptor->baseMipLevel, descriptor->mipLevelCount);
auto arrayLayerRange = NSMakeRange(descriptor->baseArrayLayer, descriptor->arrayLayerCount);
mMtlTextureView = AcquireNSPRef([mtlTexture newTextureViewWithPixelFormat:viewFormat
textureType:textureViewType
levels:mipLevelRange
slices:arrayLayerRange]);
if (mMtlTextureView == nil) {
return DAWN_INTERNAL_ERROR("Failed to create MTLTexture view.");
}
}
SetLabelImpl();
return {};
}
void TextureView::DestroyImpl() {
mMtlTextureView = nil;
}
void TextureView::SetLabelImpl() {
SetDebugName(GetDevice(), mMtlTextureView.Get(), "Dawn_TextureView", GetLabel());
}
id<MTLTexture> TextureView::GetMTLTexture() const {
ASSERT(mMtlTextureView != nullptr);
return mMtlTextureView.Get();
}
TextureView::AttachmentInfo TextureView::GetAttachmentInfo() const {
ASSERT(GetTexture()->GetInternalUsage() & wgpu::TextureUsage::RenderAttachment);
// Use our own view if the formats do not match.
// If the formats do not match, format reinterpretation will be required.
// Note: Depth/stencil formats don't support reinterpretation.
// Also, we compute |useOwnView| here instead of relying on whether or not
// a view was created in Initialize, because rendering to a depth/stencil
// texture on Metal only works when using the original texture, not a view.
bool useOwnView = GetFormat().format != GetTexture()->GetFormat().format &&
!GetTexture()->GetFormat().HasDepthOrStencil();
if (useOwnView) {
ASSERT(mMtlTextureView.Get());
return {mMtlTextureView, 0, 0};
}
AttachmentInfo info;
info.texture = ToBackend(GetTexture())->GetMTLTexture();
info.baseMipLevel = GetBaseMipLevel();
info.baseArrayLayer = GetBaseArrayLayer();
return info;
}
} // namespace dawn::native::metal