src/dawn/native/ExternalTexture.cpp - dawn - Git at Google

 // Copyright 2021 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/ExternalTexture.h"

 #include <algorithm>
 #include <utility>

 #include "dawn/native/Buffer.h"
 #include "dawn/native/Device.h"
 #include "dawn/native/ObjectType_autogen.h"
 #include "dawn/native/Queue.h"
 #include "dawn/native/Texture.h"

 #include "dawn/native/dawn_platform.h"

 namespace dawn::native {

 MaybeError ValidateExternalTexturePlane(const TextureViewBase* textureView) {
     DAWN_INVALID_IF(
         (textureView->GetTexture()->GetUsage() & wgpu::TextureUsage::TextureBinding) == 0,
         "The external texture plane (%s) usage (%s) doesn't include the required usage (%s)",
         textureView, textureView->GetTexture()->GetUsage(), wgpu::TextureUsage::TextureBinding);

     DAWN_INVALID_IF(textureView->GetDimension() != wgpu::TextureViewDimension::e2D,
                     "The external texture plane (%s) dimension (%s) is not 2D.", textureView,
                     textureView->GetDimension());

     DAWN_INVALID_IF(textureView->GetLevelCount() > 1,
                     "The external texture plane (%s) mip level count (%u) is not 1.", textureView,
                     textureView->GetLevelCount());

     DAWN_INVALID_IF(textureView->GetTexture()->GetSampleCount() != 1,
                     "The external texture plane (%s) sample count (%u) is not one.", textureView,
                     textureView->GetTexture()->GetSampleCount());

     return {};
 }

 MaybeError ValidateExternalTextureDescriptor(const DeviceBase* device,
                                              const ExternalTextureDescriptor* descriptor) {
     ASSERT(descriptor);
     ASSERT(descriptor->plane0);

     DAWN_TRY(device->ValidateObject(descriptor->plane0));

     wgpu::TextureFormat plane0Format = descriptor->plane0->GetFormat().format;

     DAWN_INVALID_IF(!descriptor->gamutConversionMatrix,
                     "The gamut conversion matrix must be non-null.");

     DAWN_INVALID_IF(!descriptor->srcTransferFunctionParameters,
                     "The source transfer function parameters must be non-null.");

     DAWN_INVALID_IF(!descriptor->dstTransferFunctionParameters,
                     "The destination transfer function parameters must be non-null.");

     if (descriptor->plane1) {
         DAWN_INVALID_IF(
             !descriptor->yuvToRgbConversionMatrix,
             "When more than one plane is set, the YUV-to-RGB conversion matrix must be non-null.");

         DAWN_TRY(device->ValidateObject(descriptor->plane1));
         wgpu::TextureFormat plane1Format = descriptor->plane1->GetFormat().format;

         DAWN_INVALID_IF(plane0Format != wgpu::TextureFormat::R8Unorm,
                         "The bi-planar external texture plane (%s) format (%s) is not %s.",
                         descriptor->plane0, plane0Format, wgpu::TextureFormat::R8Unorm);
         DAWN_INVALID_IF(plane1Format != wgpu::TextureFormat::RG8Unorm,
                         "The bi-planar external texture plane (%s) format (%s) is not %s.",
                         descriptor->plane1, plane1Format, wgpu::TextureFormat::RG8Unorm);

         DAWN_TRY(ValidateExternalTexturePlane(descriptor->plane0));
         DAWN_TRY(ValidateExternalTexturePlane(descriptor->plane1));
     } else {
         switch (plane0Format) {
             case wgpu::TextureFormat::RGBA8Unorm:
             case wgpu::TextureFormat::BGRA8Unorm:
             case wgpu::TextureFormat::RGBA16Float:
                 DAWN_TRY(ValidateExternalTexturePlane(descriptor->plane0));
                 break;
             default:
                 return DAWN_FORMAT_VALIDATION_ERROR(
                     "The external texture plane (%s) format (%s) is not a supported format "
                     "(%s, %s, %s).",
                     descriptor->plane0, plane0Format, wgpu::TextureFormat::RGBA8Unorm,
                     wgpu::TextureFormat::BGRA8Unorm, wgpu::TextureFormat::RGBA16Float);
         }
     }

     return {};
 }

 // static
 ResultOrError<Ref<ExternalTextureBase>> ExternalTextureBase::Create(
     DeviceBase* device,
     const ExternalTextureDescriptor* descriptor) {
     Ref<ExternalTextureBase> externalTexture =
         AcquireRef(new ExternalTextureBase(device, descriptor));
     DAWN_TRY(externalTexture->Initialize(device, descriptor));
     return std::move(externalTexture);
 }

 ExternalTextureBase::ExternalTextureBase(DeviceBase* device,
                                          const ExternalTextureDescriptor* descriptor)
     : ApiObjectBase(device, descriptor->label), mState(ExternalTextureState::Alive) {
     TrackInDevice();
 }

 ExternalTextureBase::ExternalTextureBase(DeviceBase* device)
     : ApiObjectBase(device, kLabelNotImplemented), mState(ExternalTextureState::Alive) {
     TrackInDevice();
 }

 ExternalTextureBase::ExternalTextureBase(DeviceBase* device, ObjectBase::ErrorTag tag)
     : ApiObjectBase(device, tag) {}

 ExternalTextureBase::~ExternalTextureBase() = default;

 MaybeError ExternalTextureBase::Initialize(DeviceBase* device,
                                            const ExternalTextureDescriptor* descriptor) {
     // Store any passed in TextureViews associated with individual planes.
     mTextureViews[0] = descriptor->plane0;

     if (descriptor->plane1) {
         mTextureViews[1] = descriptor->plane1;
     } else {
         DAWN_TRY_ASSIGN(mTextureViews[1],
                         device->GetOrCreatePlaceholderTextureViewForExternalTexture());
     }

     // We must create a buffer to store parameters needed by a shader that operates on this
     // external texture.
     BufferDescriptor bufferDesc;
     bufferDesc.size = sizeof(ExternalTextureParams);
     bufferDesc.usage = wgpu::BufferUsage::Uniform | wgpu::BufferUsage::CopyDst;
     bufferDesc.label = "Dawn_External_Texture_Params_Buffer";

     DAWN_TRY_ASSIGN(mParamsBuffer, device->CreateBuffer(&bufferDesc));

     ExternalTextureParams params;
     params.numPlanes = descriptor->plane1 == nullptr ? 1 : 2;

     params.doYuvToRgbConversionOnly = descriptor->doYuvToRgbConversionOnly ? 1 : 0;

     // YUV-to-RGB conversion is performed by multiplying the source YUV values with a 4x3 matrix
     // passed from Chromium. The matrix was originally sourced from /skia/src/core/SkYUVMath.cpp.
     // This matrix is only used in multiplanar scenarios.
     if (params.numPlanes == 2) {
         ASSERT(descriptor->yuvToRgbConversionMatrix);
         const float* yMat = descriptor->yuvToRgbConversionMatrix;
         std::copy(yMat, yMat + 12, params.yuvToRgbConversionMatrix.begin());
     }

     // Gamut correction is performed by multiplying a 3x3 matrix passed from Chromium. The
     // matrix was computed by multiplying the appropriate source and destination gamut
     // matrices sourced from ui/gfx/color_space.cc.
     const float* gMat = descriptor->gamutConversionMatrix;
     params.gamutConversionMatrix = {gMat[0], gMat[1], gMat[2], 0.0f,  //
                                     gMat[3], gMat[4], gMat[5], 0.0f,  //
                                     gMat[6], gMat[7], gMat[8], 0.0f};

     // Gamma decode/encode is performed by the logic:
     //    if (abs(v) < params.D) {
     //        return sign(v) * (params.C * abs(v) + params.F);
     //    }
     //    return pow(A * x + B, G) + E
     //
     // Constants are passed from Chromium and originally sourced from ui/gfx/color_space.cc
     const float* srcFn = descriptor->srcTransferFunctionParameters;
     std::copy(srcFn, srcFn + 7, params.gammaDecodingParams.begin());

     const float* dstFn = descriptor->dstTransferFunctionParameters;
     std::copy(dstFn, dstFn + 7, params.gammaEncodingParams.begin());

     DAWN_TRY(device->GetQueue()->WriteBuffer(mParamsBuffer.Get(), 0, &params,
                                              sizeof(ExternalTextureParams)));

     return {};
 }

 const std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat>& ExternalTextureBase::GetTextureViews()
     const {
     return mTextureViews;
 }

 MaybeError ExternalTextureBase::ValidateCanUseInSubmitNow() const {
     ASSERT(!IsError());
     DAWN_INVALID_IF(mState == ExternalTextureState::Destroyed,
                     "Destroyed external texture %s is used in a submit.", this);
     return {};
 }

 void ExternalTextureBase::APIDestroy() {
     if (GetDevice()->ConsumedError(GetDevice()->ValidateObject(this))) {
         return;
     }
     Destroy();
 }

 void ExternalTextureBase::DestroyImpl() {
     mState = ExternalTextureState::Destroyed;
 }

 // static
 ExternalTextureBase* ExternalTextureBase::MakeError(DeviceBase* device) {
     return new ExternalTextureBase(device, ObjectBase::kError);
 }

 BufferBase* ExternalTextureBase::GetParamsBuffer() const {
     return mParamsBuffer.Get();
 }

 ObjectType ExternalTextureBase::GetType() const {
     return ObjectType::ExternalTexture;
 }

 }  // namespace dawn::native
	// Copyright 2021 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/ExternalTexture.h"

	#include <algorithm>
	#include <utility>

	#include "dawn/native/Buffer.h"
	#include "dawn/native/Device.h"
	#include "dawn/native/ObjectType_autogen.h"
	#include "dawn/native/Queue.h"
	#include "dawn/native/Texture.h"

	#include "dawn/native/dawn_platform.h"

	namespace dawn::native {

	MaybeError ValidateExternalTexturePlane(const TextureViewBase* textureView) {
	DAWN_INVALID_IF(
	(textureView->GetTexture()->GetUsage() & wgpu::TextureUsage::TextureBinding) == 0,
	"The external texture plane (%s) usage (%s) doesn't include the required usage (%s)",
	textureView, textureView->GetTexture()->GetUsage(), wgpu::TextureUsage::TextureBinding);

	DAWN_INVALID_IF(textureView->GetDimension() != wgpu::TextureViewDimension::e2D,
	"The external texture plane (%s) dimension (%s) is not 2D.", textureView,
	textureView->GetDimension());

	DAWN_INVALID_IF(textureView->GetLevelCount() > 1,
	"The external texture plane (%s) mip level count (%u) is not 1.", textureView,
	textureView->GetLevelCount());

	DAWN_INVALID_IF(textureView->GetTexture()->GetSampleCount() != 1,
	"The external texture plane (%s) sample count (%u) is not one.", textureView,
	textureView->GetTexture()->GetSampleCount());

	return {};
	}

	MaybeError ValidateExternalTextureDescriptor(const DeviceBase* device,
	const ExternalTextureDescriptor* descriptor) {
	ASSERT(descriptor);
	ASSERT(descriptor->plane0);

	DAWN_TRY(device->ValidateObject(descriptor->plane0));

	wgpu::TextureFormat plane0Format = descriptor->plane0->GetFormat().format;

	DAWN_INVALID_IF(!descriptor->gamutConversionMatrix,
	"The gamut conversion matrix must be non-null.");

	DAWN_INVALID_IF(!descriptor->srcTransferFunctionParameters,
	"The source transfer function parameters must be non-null.");

	DAWN_INVALID_IF(!descriptor->dstTransferFunctionParameters,
	"The destination transfer function parameters must be non-null.");

	if (descriptor->plane1) {
	DAWN_INVALID_IF(
	!descriptor->yuvToRgbConversionMatrix,
	"When more than one plane is set, the YUV-to-RGB conversion matrix must be non-null.");

	DAWN_TRY(device->ValidateObject(descriptor->plane1));
	wgpu::TextureFormat plane1Format = descriptor->plane1->GetFormat().format;

	DAWN_INVALID_IF(plane0Format != wgpu::TextureFormat::R8Unorm,
	"The bi-planar external texture plane (%s) format (%s) is not %s.",
	descriptor->plane0, plane0Format, wgpu::TextureFormat::R8Unorm);
	DAWN_INVALID_IF(plane1Format != wgpu::TextureFormat::RG8Unorm,
	"The bi-planar external texture plane (%s) format (%s) is not %s.",
	descriptor->plane1, plane1Format, wgpu::TextureFormat::RG8Unorm);

	DAWN_TRY(ValidateExternalTexturePlane(descriptor->plane0));
	DAWN_TRY(ValidateExternalTexturePlane(descriptor->plane1));
	} else {
	switch (plane0Format) {
	case wgpu::TextureFormat::RGBA8Unorm:
	case wgpu::TextureFormat::BGRA8Unorm:
	case wgpu::TextureFormat::RGBA16Float:
	DAWN_TRY(ValidateExternalTexturePlane(descriptor->plane0));
	break;
	default:
	return DAWN_FORMAT_VALIDATION_ERROR(
	"The external texture plane (%s) format (%s) is not a supported format "
	"(%s, %s, %s).",
	descriptor->plane0, plane0Format, wgpu::TextureFormat::RGBA8Unorm,
	wgpu::TextureFormat::BGRA8Unorm, wgpu::TextureFormat::RGBA16Float);
	}
	}

	return {};
	}

	// static
	ResultOrError<Ref<ExternalTextureBase>> ExternalTextureBase::Create(
	DeviceBase* device,
	const ExternalTextureDescriptor* descriptor) {
	Ref<ExternalTextureBase> externalTexture =
	AcquireRef(new ExternalTextureBase(device, descriptor));
	DAWN_TRY(externalTexture->Initialize(device, descriptor));
	return std::move(externalTexture);
	}

	ExternalTextureBase::ExternalTextureBase(DeviceBase* device,
	const ExternalTextureDescriptor* descriptor)
	: ApiObjectBase(device, descriptor->label), mState(ExternalTextureState::Alive) {
	TrackInDevice();
	}

	ExternalTextureBase::ExternalTextureBase(DeviceBase* device)
	: ApiObjectBase(device, kLabelNotImplemented), mState(ExternalTextureState::Alive) {
	TrackInDevice();
	}

	ExternalTextureBase::ExternalTextureBase(DeviceBase* device, ObjectBase::ErrorTag tag)
	: ApiObjectBase(device, tag) {}

	ExternalTextureBase::~ExternalTextureBase() = default;

	MaybeError ExternalTextureBase::Initialize(DeviceBase* device,
	const ExternalTextureDescriptor* descriptor) {
	// Store any passed in TextureViews associated with individual planes.
	mTextureViews[0] = descriptor->plane0;

	if (descriptor->plane1) {
	mTextureViews[1] = descriptor->plane1;
	} else {
	DAWN_TRY_ASSIGN(mTextureViews[1],
	device->GetOrCreatePlaceholderTextureViewForExternalTexture());
	}

	// We must create a buffer to store parameters needed by a shader that operates on this
	// external texture.
	BufferDescriptor bufferDesc;
	bufferDesc.size = sizeof(ExternalTextureParams);
	bufferDesc.usage = wgpu::BufferUsage::Uniform \| wgpu::BufferUsage::CopyDst;
	bufferDesc.label = "Dawn_External_Texture_Params_Buffer";

	DAWN_TRY_ASSIGN(mParamsBuffer, device->CreateBuffer(&bufferDesc));

	ExternalTextureParams params;
	params.numPlanes = descriptor->plane1 == nullptr ? 1 : 2;

	params.doYuvToRgbConversionOnly = descriptor->doYuvToRgbConversionOnly ? 1 : 0;

	// YUV-to-RGB conversion is performed by multiplying the source YUV values with a 4x3 matrix
	// passed from Chromium. The matrix was originally sourced from /skia/src/core/SkYUVMath.cpp.
	// This matrix is only used in multiplanar scenarios.
	if (params.numPlanes == 2) {
	ASSERT(descriptor->yuvToRgbConversionMatrix);
	const float* yMat = descriptor->yuvToRgbConversionMatrix;
	std::copy(yMat, yMat + 12, params.yuvToRgbConversionMatrix.begin());
	}

	// Gamut correction is performed by multiplying a 3x3 matrix passed from Chromium. The
	// matrix was computed by multiplying the appropriate source and destination gamut
	// matrices sourced from ui/gfx/color_space.cc.
	const float* gMat = descriptor->gamutConversionMatrix;
	params.gamutConversionMatrix = {gMat[0], gMat[1], gMat[2], 0.0f, //
	gMat[3], gMat[4], gMat[5], 0.0f, //
	gMat[6], gMat[7], gMat[8], 0.0f};

	// Gamma decode/encode is performed by the logic:
	// if (abs(v) < params.D) {
	// return sign(v) * (params.C * abs(v) + params.F);
	// }
	// return pow(A * x + B, G) + E
	//
	// Constants are passed from Chromium and originally sourced from ui/gfx/color_space.cc
	const float* srcFn = descriptor->srcTransferFunctionParameters;
	std::copy(srcFn, srcFn + 7, params.gammaDecodingParams.begin());

	const float* dstFn = descriptor->dstTransferFunctionParameters;
	std::copy(dstFn, dstFn + 7, params.gammaEncodingParams.begin());

	DAWN_TRY(device->GetQueue()->WriteBuffer(mParamsBuffer.Get(), 0, &params,
	sizeof(ExternalTextureParams)));

	return {};
	}

	const std::array<Ref<TextureViewBase>, kMaxPlanesPerFormat>& ExternalTextureBase::GetTextureViews()
	const {
	return mTextureViews;
	}

	MaybeError ExternalTextureBase::ValidateCanUseInSubmitNow() const {
	ASSERT(!IsError());
	DAWN_INVALID_IF(mState == ExternalTextureState::Destroyed,
	"Destroyed external texture %s is used in a submit.", this);
	return {};
	}

	void ExternalTextureBase::APIDestroy() {
	if (GetDevice()->ConsumedError(GetDevice()->ValidateObject(this))) {
	return;
	}
	Destroy();
	}

	void ExternalTextureBase::DestroyImpl() {
	mState = ExternalTextureState::Destroyed;
	}

	// static
	ExternalTextureBase* ExternalTextureBase::MakeError(DeviceBase* device) {
	return new ExternalTextureBase(device, ObjectBase::kError);
	}

	BufferBase* ExternalTextureBase::GetParamsBuffer() const {
	return mParamsBuffer.Get();
	}

	ObjectType ExternalTextureBase::GetType() const {
	return ObjectType::ExternalTexture;
	}

	} // namespace dawn::native