src/dawn/native/vulkan/ResolveTextureLoadingUtilsVk.cpp - dawn - Git at Google


            
            // Copyright 2024 The Dawn & Tint Authors

            
            //

            
            // Redistribution and use in source and binary forms, with or without

            
            // modification, are permitted provided that the following conditions are met:

            
            //

            
            // 1. Redistributions of source code must retain the above copyright notice, this

            
            //    list of conditions and the following disclaimer.

            
            //

            
            // 2. Redistributions in binary form must reproduce the above copyright notice,

            
            //    this list of conditions and the following disclaimer in the documentation

            
            //    and/or other materials provided with the distribution.

            
            //

            
            // 3. Neither the name of the copyright holder nor the names of its

            
            //    contributors may be used to endorse or promote products derived from

            
            //    this software without specific prior written permission.

            
            //

            
            // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

            
            // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

            
            // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

            
            // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE

            
            // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

            
            // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

            
            // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

            
            // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

            
            // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

            
            // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


            #include "dawn/native/vulkan/ResolveTextureLoadingUtilsVk.h"


            #include <sstream>

            
            #include <string>

            
            #include <utility>


            #include "absl/container/inlined_vector.h"

            
            #include "dawn/common/Assert.h"

            
            #include "dawn/common/Enumerator.h"

            
            #include "dawn/native/BindGroup.h"

            
            #include "dawn/native/Commands.h"

            
            #include "dawn/native/Device.h"

            
            #include "dawn/native/InternalPipelineStore.h"

            
            #include "dawn/native/utils/WGPUHelpers.h"

            
            #include "dawn/native/vulkan/BindGroupLayoutVk.h"

            
            #include "dawn/native/vulkan/BindGroupVk.h"

            
            #include "dawn/native/vulkan/DeviceVk.h"

            
            #include "dawn/native/vulkan/PipelineLayoutVk.h"

            
            #include "dawn/native/vulkan/RenderPipelineVk.h"

            
            #include "dawn/native/vulkan/TextureVk.h"

            
            #include "dawn/native/vulkan/UtilsVulkan.h"

            
            #include "dawn/native/vulkan/VulkanError.h"

            
            #include "dawn/native/webgpu_absl_format.h"


            namespace dawn::native::vulkan {


            namespace {


            constexpr char kBlitToColorVS[] = R"(


            @vertex fn vert_fullscreen_quad(

            
              @builtin(vertex_index) vertex_index : u32,

            
            ) -> @builtin(position) vec4f {

            
              const pos = array(

            
                  vec2f(-1.0, -1.0),

            
                  vec2f( 3.0, -1.0),

            
                  vec2f(-1.0,  3.0));

            
              return vec4f(pos[vertex_index], 0.0, 1.0);

            
            }

            
            )";


            std::string GenerateFS(const BlitColorToColorWithDrawPipelineKey& pipelineKey) {

            
                std::ostringstream outputStructStream;

            
                std::ostringstream assignOutputsStream;

            
                std::ostringstream finalStream;


                finalStream << "enable chromium_internal_input_attachments;";


                for (auto i : IterateBitSet(pipelineKey.attachmentsToExpandResolve)) {

            
                    finalStream << absl::StrFormat(

            
                        "@group(0) @binding(%u) @input_attachment_index(%u) var srcTex%u : "

            
                        "input_attachment<f32>;\n",

            
                        i, i, i);


                    outputStructStream << absl::StrFormat("@location(%u) output%u : vec4f,\n", i, i);


                    assignOutputsStream << absl::StrFormat(

            
                        "\toutputColor.output%u = inputAttachmentLoad(srcTex%u);\n", i, i);

            
                }


                finalStream << "struct OutputColor {\n" << outputStructStream.str() << "}\n\n";

            
                finalStream << R"(

            
            @fragment fn blit_to_color() -> OutputColor {

            
                var outputColor : OutputColor;

            
            )" << assignOutputsStream.str()

            
                            << R"(

            
                return outputColor;

            
            })";


                return finalStream.str();

            
            }


            ResultOrError<Ref<RenderPipelineBase>> GetOrCreateColorBlitPipeline(

            
                DeviceBase* device,

            
                const BlitColorToColorWithDrawPipelineKey& pipelineKey,

            
                uint8_t colorAttachmentCount) {

            
                InternalPipelineStore* store = device->GetInternalPipelineStore();

            
                {

            
                    auto it = store->expandResolveTexturePipelines.find(pipelineKey);

            
                    if (it != store->expandResolveTexturePipelines.end()) {

            
                        return it->second;

            
                    }

            
                }


                // vertex shader.

            
                Ref<ShaderModuleBase> vshaderModule;

            
                DAWN_TRY_ASSIGN(vshaderModule, utils::CreateShaderModule(device, kBlitToColorVS));


                // fragment shader's source will depend on pipeline key.

            
                std::string fsCode = GenerateFS(pipelineKey);

            
                Ref<ShaderModuleBase> fshaderModule;

            
                DAWN_TRY_ASSIGN(fshaderModule, utils::CreateShaderModule(

            
                                                   device, fsCode.c_str(),

            
                                                   {tint::wgsl::Extension::kChromiumInternalInputAttachments}));


                FragmentState fragmentState = {};

            
                fragmentState.module = fshaderModule.Get();


                // Color target states.

            
                PerColorAttachment<ColorTargetState> colorTargets = {};

            
                PerColorAttachment<wgpu::ColorTargetStateExpandResolveTextureDawn> msaaExpandResolveStates{};


                for (auto [i, target] : Enumerate(colorTargets)) {

            
                    target.format = pipelineKey.colorTargetFormats[i];

            
                    // We shouldn't change the color targets that are not involved in.

            
                    if (pipelineKey.resolveTargetsMask[i]) {

            
                        target.nextInChain = &msaaExpandResolveStates[i];

            
                        msaaExpandResolveStates[i].enabled = pipelineKey.attachmentsToExpandResolve[i];

            
                        if (msaaExpandResolveStates[i].enabled) {

            
                            target.writeMask = wgpu::ColorWriteMask::All;

            
                        } else {

            
                            target.writeMask = wgpu::ColorWriteMask::None;

            
                        }

            
                    } else {

            
                        target.writeMask = wgpu::ColorWriteMask::None;

            
                    }

            
                }


                fragmentState.targetCount = colorAttachmentCount;

            
                fragmentState.targets = colorTargets.data();


                RenderPipelineDescriptor renderPipelineDesc = {};

            
                renderPipelineDesc.label = "blit_color_to_color";

            
                renderPipelineDesc.vertex.module = vshaderModule.Get();

            
                renderPipelineDesc.fragment = &fragmentState;


                // Depth stencil state.

            
                DepthStencilState depthStencilState = {};

            
                if (pipelineKey.depthStencilFormat != wgpu::TextureFormat::Undefined) {

            
                    depthStencilState.format = pipelineKey.depthStencilFormat;

            
                    depthStencilState.depthWriteEnabled = wgpu::OptionalBool::False;


                    renderPipelineDesc.depthStencil = &depthStencilState;

            
                }


                // Multisample state.

            
                DAWN_ASSERT(pipelineKey.sampleCount > 1);

            
                renderPipelineDesc.multisample.count = pipelineKey.sampleCount;


                renderPipelineDesc.layout = nullptr;


                Ref<RenderPipelineBase> pipeline;

            
                DAWN_TRY_ASSIGN(

            
                    pipeline, device->CreateRenderPipeline(&renderPipelineDesc, /*allowInternalBinding=*/true));


                store->expandResolveTexturePipelines.emplace(pipelineKey, pipeline);

            
                return pipeline;

            
            }


            }  // namespace


            MaybeError BeginRenderPassAndExpandResolveTextureWithDraw(Device* device,

            
                                                                      CommandRecordingContext* commandContext,

            
                                                                      const BeginRenderPassCmd* renderPass,

            
                                                                      const VkRenderPassBeginInfo& beginInfo) {

            
                DAWN_ASSERT(device->IsLockedByCurrentThreadIfNeeded());


                // Construct pipeline key

            
                BlitColorToColorWithDrawPipelineKey pipelineKey;

            
                ColorAttachmentIndex colorAttachmentCount =

            
                    GetHighestBitIndexPlusOne(renderPass->attachmentState->GetColorAttachmentsMask());

            
                for (ColorAttachmentIndex colorIdx :

            
                     IterateBitSet(renderPass->attachmentState->GetColorAttachmentsMask())) {

            
                    const auto& colorAttachment = renderPass->colorAttachments[colorIdx];

            
                    const auto& view = colorAttachment.view;

            
                    DAWN_ASSERT(view != nullptr);

            
                    const Format& format = view->GetFormat();

            
                    TextureComponentType baseType = format.GetAspectInfo(Aspect::Color).baseType;

            
                    // Blitting integer textures are not currently supported.

            
                    DAWN_ASSERT(baseType == TextureComponentType::Float);


                    if (colorAttachment.loadOp == wgpu::LoadOp::ExpandResolveTexture) {

            
                        // TODO(42240662): Handle the cases where resolveTarget is altered by workarounds such

            
                        // as ResolveMultipleAttachmentInSeparatePasses/AlwaysResolveIntoZeroLevelAndLayer. We

            
                        // need to careful handle such cases because the render pass' compatibility could be

            
                        // affected as well.

            
                        DAWN_INVALID_IF(colorAttachment.resolveTarget == nullptr,

            
                                        "resolveTarget at %d has been removed by some workarounds. %s doesn't "

            
                                        "support this yet.",

            
                                        colorIdx, colorAttachment.loadOp);

            
                        DAWN_ASSERT(colorAttachment.resolveTarget->GetLayerCount() == 1u);

            
                        DAWN_ASSERT(colorAttachment.resolveTarget->GetDimension() ==

            
                                    wgpu::TextureViewDimension::e2D);

            
                        pipelineKey.attachmentsToExpandResolve.set(colorIdx);

            
                    }

            
                    pipelineKey.resolveTargetsMask.set(colorIdx, colorAttachment.resolveTarget != nullptr);


                    pipelineKey.colorTargetFormats[colorIdx] = format.format;

            
                    pipelineKey.sampleCount = view->GetTexture()->GetSampleCount();

            
                }


                DAWN_ASSERT(pipelineKey.attachmentsToExpandResolve.any());


                pipelineKey.depthStencilFormat = wgpu::TextureFormat::Undefined;

            
                if (renderPass->depthStencilAttachment.view != nullptr) {

            
                    pipelineKey.depthStencilFormat =

            
                        renderPass->depthStencilAttachment.view->GetFormat().format;

            
                }


                Ref<RenderPipelineBase> pipeline;

            
                DAWN_TRY_ASSIGN(pipeline, GetOrCreateColorBlitPipeline(

            
                                              device, pipelineKey, static_cast<uint8_t>(colorAttachmentCount)));


                RenderPipeline* pipelineVk = ToBackend(pipeline.Get());


                // Construct bind group.

            
                Ref<BindGroupLayoutBase> bgl;

            
                DAWN_TRY_ASSIGN(bgl, pipelineVk->GetBindGroupLayout(0));


                Ref<BindGroupBase> bindGroup;

            
                absl::InlinedVector<BindGroupEntry, kMaxColorAttachments> bgEntries = {};


                for (auto colorIdx : IterateBitSet(pipelineKey.attachmentsToExpandResolve)) {

            
                    const auto& colorAttachment = renderPass->colorAttachments[colorIdx];

            
                    bgEntries.push_back({});

            
                    auto& bgEntry = bgEntries.back();

            
                    bgEntry.binding = static_cast<uint8_t>(colorIdx);

            
                    bgEntry.textureView = colorAttachment.resolveTarget.Get();


                    // Transition the resolve texture

            
                    auto* textureVk = static_cast<Texture*>(colorAttachment.resolveTarget->GetTexture());

            
                    textureVk->TransitionUsageNow(commandContext, kResolveAttachmentLoadingUsage,

            
                                                  wgpu::ShaderStage::Fragment,

            
                                                  colorAttachment.resolveTarget->GetSubresourceRange());

            
                }


                BindGroupDescriptor bgDesc = {};

            
                bgDesc.layout = bgl.Get();

            
                bgDesc.entryCount = bgEntries.size();

            
                bgDesc.entries = bgEntries.data();

            
                DAWN_TRY_ASSIGN(bindGroup, device->CreateBindGroup(&bgDesc, UsageValidationMode::Internal));

            
                BindGroup* bindGroupVk = ToBackend(bindGroup.Get());


                // Start the render pass

            
                VkCommandBuffer commandBuffer = commandContext->commandBuffer;


                device->fn.CmdBeginRenderPass(commandBuffer, &beginInfo, VK_SUBPASS_CONTENTS_INLINE);


                // Draw to perform the blit.

            
                VkViewport viewport{};

            
                viewport.x = 0.0f;

            
                viewport.y = 0.0f;

            
                viewport.width = static_cast<float>(renderPass->width);

            
                viewport.height = static_cast<float>(renderPass->height);

            
                viewport.minDepth = 0.0f;

            
                viewport.maxDepth = 1.0f;

            
                device->fn.CmdSetViewport(commandBuffer, 0, 1, &viewport);


                VkRect2D scissor{};

            
                scissor.offset = {0, 0};

            
                scissor.extent.width = renderPass->width;

            
                scissor.extent.height = renderPass->height;

            
                device->fn.CmdSetScissor(commandBuffer, 0, 1, &scissor);


                device->fn.CmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS,

            
                                           *pipelineVk->GetHandle());

            
                device->fn.CmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS,

            
                                                 *pipelineVk->GetVkLayout(), 0, 1, &*bindGroupVk->GetHandle(),

            
                                                 0, nullptr);

            
                device->fn.CmdDraw(commandBuffer, 3, 1, 0, 0);


                device->fn.CmdNextSubpass(commandBuffer, VK_SUBPASS_CONTENTS_INLINE);


                // Subpass dependency automatically transitions the layouts of the resolve textures

            
                // to RenderAttachment. So we need to notify TextureVk and don't need to use any explicit

            
                // barriers.

            
                for (auto colorIdx : IterateBitSet(pipelineKey.attachmentsToExpandResolve)) {

            
                    const auto& colorAttachment = renderPass->colorAttachments[colorIdx];

            
                    auto* textureVk = static_cast<Texture*>(colorAttachment.resolveTarget->GetTexture());

            
                    textureVk->UpdateUsage(wgpu::TextureUsage::RenderAttachment, wgpu::ShaderStage::Fragment,

            
                                           colorAttachment.resolveTarget->GetSubresourceRange());

            
                }


                return {};

            
            }

            
            }  // namespace dawn::native::vulkan
	// Copyright 2024 The Dawn & Tint Authors
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// 1. Redistributions of source code must retain the above copyright notice, this
	// list of conditions and the following disclaimer.
	//
	// 2. Redistributions in binary form must reproduce the above copyright notice,
	// this list of conditions and the following disclaimer in the documentation
	// and/or other materials provided with the distribution.
	//
	// 3. Neither the name of the copyright holder nor the names of its
	// contributors may be used to endorse or promote products derived from
	// this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
	// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#include "dawn/native/vulkan/ResolveTextureLoadingUtilsVk.h"

	#include <sstream>
	#include <string>
	#include <utility>

	#include "absl/container/inlined_vector.h"
	#include "dawn/common/Assert.h"
	#include "dawn/common/Enumerator.h"
	#include "dawn/native/BindGroup.h"
	#include "dawn/native/Commands.h"
	#include "dawn/native/Device.h"
	#include "dawn/native/InternalPipelineStore.h"
	#include "dawn/native/utils/WGPUHelpers.h"
	#include "dawn/native/vulkan/BindGroupLayoutVk.h"
	#include "dawn/native/vulkan/BindGroupVk.h"
	#include "dawn/native/vulkan/DeviceVk.h"
	#include "dawn/native/vulkan/PipelineLayoutVk.h"
	#include "dawn/native/vulkan/RenderPipelineVk.h"
	#include "dawn/native/vulkan/TextureVk.h"
	#include "dawn/native/vulkan/UtilsVulkan.h"
	#include "dawn/native/vulkan/VulkanError.h"
	#include "dawn/native/webgpu_absl_format.h"

	namespace dawn::native::vulkan {

	namespace {

	constexpr char kBlitToColorVS[] = R"(

	@vertex fn vert_fullscreen_quad(
	@builtin(vertex_index) vertex_index : u32,
	) -> @builtin(position) vec4f {
	const pos = array(
	vec2f(-1.0, -1.0),
	vec2f( 3.0, -1.0),
	vec2f(-1.0, 3.0));
	return vec4f(pos[vertex_index], 0.0, 1.0);
	}
	)";

	std::string GenerateFS(const BlitColorToColorWithDrawPipelineKey& pipelineKey) {
	std::ostringstream outputStructStream;
	std::ostringstream assignOutputsStream;
	std::ostringstream finalStream;

	finalStream << "enable chromium_internal_input_attachments;";

	for (auto i : IterateBitSet(pipelineKey.attachmentsToExpandResolve)) {
	finalStream << absl::StrFormat(
	"@group(0) @binding(%u) @input_attachment_index(%u) var srcTex%u : "
	"input_attachment<f32>;\n",
	i, i, i);

	outputStructStream << absl::StrFormat("@location(%u) output%u : vec4f,\n", i, i);

	assignOutputsStream << absl::StrFormat(
	"\toutputColor.output%u = inputAttachmentLoad(srcTex%u);\n", i, i);
	}

	finalStream << "struct OutputColor {\n" << outputStructStream.str() << "}\n\n";
	finalStream << R"(
	@fragment fn blit_to_color() -> OutputColor {
	var outputColor : OutputColor;
	)" << assignOutputsStream.str()
	<< R"(
	return outputColor;
	})";

	return finalStream.str();
	}

	ResultOrError<Ref<RenderPipelineBase>> GetOrCreateColorBlitPipeline(
	DeviceBase* device,
	const BlitColorToColorWithDrawPipelineKey& pipelineKey,
	uint8_t colorAttachmentCount) {
	InternalPipelineStore* store = device->GetInternalPipelineStore();
	{
	auto it = store->expandResolveTexturePipelines.find(pipelineKey);
	if (it != store->expandResolveTexturePipelines.end()) {
	return it->second;
	}
	}

	// vertex shader.
	Ref<ShaderModuleBase> vshaderModule;
	DAWN_TRY_ASSIGN(vshaderModule, utils::CreateShaderModule(device, kBlitToColorVS));

	// fragment shader's source will depend on pipeline key.
	std::string fsCode = GenerateFS(pipelineKey);
	Ref<ShaderModuleBase> fshaderModule;
	DAWN_TRY_ASSIGN(fshaderModule, utils::CreateShaderModule(
	device, fsCode.c_str(),
	{tint::wgsl::Extension::kChromiumInternalInputAttachments}));

	FragmentState fragmentState = {};
	fragmentState.module = fshaderModule.Get();

	// Color target states.
	PerColorAttachment<ColorTargetState> colorTargets = {};
	PerColorAttachment<wgpu::ColorTargetStateExpandResolveTextureDawn> msaaExpandResolveStates{};

	for (auto [i, target] : Enumerate(colorTargets)) {
	target.format = pipelineKey.colorTargetFormats[i];
	// We shouldn't change the color targets that are not involved in.
	if (pipelineKey.resolveTargetsMask[i]) {
	target.nextInChain = &msaaExpandResolveStates[i];
	msaaExpandResolveStates[i].enabled = pipelineKey.attachmentsToExpandResolve[i];
	if (msaaExpandResolveStates[i].enabled) {
	target.writeMask = wgpu::ColorWriteMask::All;
	} else {
	target.writeMask = wgpu::ColorWriteMask::None;
	}
	} else {
	target.writeMask = wgpu::ColorWriteMask::None;
	}
	}

	fragmentState.targetCount = colorAttachmentCount;
	fragmentState.targets = colorTargets.data();

	RenderPipelineDescriptor renderPipelineDesc = {};
	renderPipelineDesc.label = "blit_color_to_color";
	renderPipelineDesc.vertex.module = vshaderModule.Get();
	renderPipelineDesc.fragment = &fragmentState;

	// Depth stencil state.
	DepthStencilState depthStencilState = {};
	if (pipelineKey.depthStencilFormat != wgpu::TextureFormat::Undefined) {
	depthStencilState.format = pipelineKey.depthStencilFormat;
	depthStencilState.depthWriteEnabled = wgpu::OptionalBool::False;

	renderPipelineDesc.depthStencil = &depthStencilState;
	}

	// Multisample state.
	DAWN_ASSERT(pipelineKey.sampleCount > 1);
	renderPipelineDesc.multisample.count = pipelineKey.sampleCount;

	renderPipelineDesc.layout = nullptr;

	Ref<RenderPipelineBase> pipeline;
	DAWN_TRY_ASSIGN(
	pipeline, device->CreateRenderPipeline(&renderPipelineDesc, /allowInternalBinding=/true));

	store->expandResolveTexturePipelines.emplace(pipelineKey, pipeline);
	return pipeline;
	}

	} // namespace

	MaybeError BeginRenderPassAndExpandResolveTextureWithDraw(Device* device,
	CommandRecordingContext* commandContext,
	const BeginRenderPassCmd* renderPass,
	const VkRenderPassBeginInfo& beginInfo) {
	DAWN_ASSERT(device->IsLockedByCurrentThreadIfNeeded());

	// Construct pipeline key
	BlitColorToColorWithDrawPipelineKey pipelineKey;
	ColorAttachmentIndex colorAttachmentCount =
	GetHighestBitIndexPlusOne(renderPass->attachmentState->GetColorAttachmentsMask());
	for (ColorAttachmentIndex colorIdx :
	IterateBitSet(renderPass->attachmentState->GetColorAttachmentsMask())) {
	const auto& colorAttachment = renderPass->colorAttachments[colorIdx];
	const auto& view = colorAttachment.view;
	DAWN_ASSERT(view != nullptr);
	const Format& format = view->GetFormat();
	TextureComponentType baseType = format.GetAspectInfo(Aspect::Color).baseType;
	// Blitting integer textures are not currently supported.
	DAWN_ASSERT(baseType == TextureComponentType::Float);

	if (colorAttachment.loadOp == wgpu::LoadOp::ExpandResolveTexture) {
	// TODO(42240662): Handle the cases where resolveTarget is altered by workarounds such
	// as ResolveMultipleAttachmentInSeparatePasses/AlwaysResolveIntoZeroLevelAndLayer. We
	// need to careful handle such cases because the render pass' compatibility could be
	// affected as well.
	DAWN_INVALID_IF(colorAttachment.resolveTarget == nullptr,
	"resolveTarget at %d has been removed by some workarounds. %s doesn't "
	"support this yet.",
	colorIdx, colorAttachment.loadOp);
	DAWN_ASSERT(colorAttachment.resolveTarget->GetLayerCount() == 1u);
	DAWN_ASSERT(colorAttachment.resolveTarget->GetDimension() ==
	wgpu::TextureViewDimension::e2D);
	pipelineKey.attachmentsToExpandResolve.set(colorIdx);
	}
	pipelineKey.resolveTargetsMask.set(colorIdx, colorAttachment.resolveTarget != nullptr);

	pipelineKey.colorTargetFormats[colorIdx] = format.format;
	pipelineKey.sampleCount = view->GetTexture()->GetSampleCount();
	}

	DAWN_ASSERT(pipelineKey.attachmentsToExpandResolve.any());

	pipelineKey.depthStencilFormat = wgpu::TextureFormat::Undefined;
	if (renderPass->depthStencilAttachment.view != nullptr) {
	pipelineKey.depthStencilFormat =
	renderPass->depthStencilAttachment.view->GetFormat().format;
	}

	Ref<RenderPipelineBase> pipeline;
	DAWN_TRY_ASSIGN(pipeline, GetOrCreateColorBlitPipeline(
	device, pipelineKey, static_cast<uint8_t>(colorAttachmentCount)));

	RenderPipeline* pipelineVk = ToBackend(pipeline.Get());

	// Construct bind group.
	Ref<BindGroupLayoutBase> bgl;
	DAWN_TRY_ASSIGN(bgl, pipelineVk->GetBindGroupLayout(0));

	Ref<BindGroupBase> bindGroup;
	absl::InlinedVector<BindGroupEntry, kMaxColorAttachments> bgEntries = {};

	for (auto colorIdx : IterateBitSet(pipelineKey.attachmentsToExpandResolve)) {
	const auto& colorAttachment = renderPass->colorAttachments[colorIdx];
	bgEntries.push_back({});
	auto& bgEntry = bgEntries.back();
	bgEntry.binding = static_cast<uint8_t>(colorIdx);
	bgEntry.textureView = colorAttachment.resolveTarget.Get();

	// Transition the resolve texture
	auto* textureVk = static_cast<Texture*>(colorAttachment.resolveTarget->GetTexture());
	textureVk->TransitionUsageNow(commandContext, kResolveAttachmentLoadingUsage,
	wgpu::ShaderStage::Fragment,
	colorAttachment.resolveTarget->GetSubresourceRange());
	}

	BindGroupDescriptor bgDesc = {};
	bgDesc.layout = bgl.Get();
	bgDesc.entryCount = bgEntries.size();
	bgDesc.entries = bgEntries.data();
	DAWN_TRY_ASSIGN(bindGroup, device->CreateBindGroup(&bgDesc, UsageValidationMode::Internal));
	BindGroup* bindGroupVk = ToBackend(bindGroup.Get());

	// Start the render pass
	VkCommandBuffer commandBuffer = commandContext->commandBuffer;

	device->fn.CmdBeginRenderPass(commandBuffer, &beginInfo, VK_SUBPASS_CONTENTS_INLINE);

	// Draw to perform the blit.
	VkViewport viewport{};
	viewport.x = 0.0f;
	viewport.y = 0.0f;
	viewport.width = static_cast<float>(renderPass->width);
	viewport.height = static_cast<float>(renderPass->height);
	viewport.minDepth = 0.0f;
	viewport.maxDepth = 1.0f;
	device->fn.CmdSetViewport(commandBuffer, 0, 1, &viewport);

	VkRect2D scissor{};
	scissor.offset = {0, 0};
	scissor.extent.width = renderPass->width;
	scissor.extent.height = renderPass->height;
	device->fn.CmdSetScissor(commandBuffer, 0, 1, &scissor);

	device->fn.CmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS,
	*pipelineVk->GetHandle());
	device->fn.CmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS,
	pipelineVk->GetVkLayout(), 0, 1, &bindGroupVk->GetHandle(),
	0, nullptr);
	device->fn.CmdDraw(commandBuffer, 3, 1, 0, 0);

	device->fn.CmdNextSubpass(commandBuffer, VK_SUBPASS_CONTENTS_INLINE);

	// Subpass dependency automatically transitions the layouts of the resolve textures
	// to RenderAttachment. So we need to notify TextureVk and don't need to use any explicit
	// barriers.
	for (auto colorIdx : IterateBitSet(pipelineKey.attachmentsToExpandResolve)) {
	const auto& colorAttachment = renderPass->colorAttachments[colorIdx];
	auto* textureVk = static_cast<Texture*>(colorAttachment.resolveTarget->GetTexture());
	textureVk->UpdateUsage(wgpu::TextureUsage::RenderAttachment, wgpu::ShaderStage::Fragment,
	colorAttachment.resolveTarget->GetSubresourceRange());
	}

	return {};
	}
	} // namespace dawn::native::vulkan