src/tests/end2end/NonzeroTextureCreationTests.cpp - dawn - Git at Google

 // Copyright 2019 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 "tests/DawnTest.h"

 #include "common/Constants.h"
 #include "utils/ComboRenderPipelineDescriptor.h"
 #include "utils/WGPUHelpers.h"

 class NonzeroTextureCreationTests : public DawnTest {
   protected:
     void SetUp() override {
         DawnTest::SetUp();
     }

     constexpr static uint32_t kSize = 128;
 };

 // Test that texture clears 0xFF because toggle is enabled.
 TEST_P(NonzeroTextureCreationTests, TextureCreationClears) {
     wgpu::TextureDescriptor descriptor;
     descriptor.dimension = wgpu::TextureDimension::e2D;
     descriptor.size.width = kSize;
     descriptor.size.height = kSize;
     descriptor.size.depth = 1;
     descriptor.sampleCount = 1;
     descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
     descriptor.mipLevelCount = 1;
     descriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
     wgpu::Texture texture = device.CreateTexture(&descriptor);

     RGBA8 filled(255, 255, 255, 255);
     EXPECT_PIXEL_RGBA8_EQ(filled, texture, 0, 0);
 }

 // Test that a depth texture clears 0xFF because toggle is enabled.
 TEST_P(NonzeroTextureCreationTests, Depth32TextureCreationDepthClears) {
     // Copies from depth textures not supported on the OpenGL backend right now.
     DAWN_SKIP_TEST_IF(IsOpenGL());

     wgpu::TextureDescriptor descriptor;
     descriptor.dimension = wgpu::TextureDimension::e2D;
     descriptor.size.width = kSize;
     descriptor.size.height = kSize;
     descriptor.size.depth = 1;
     descriptor.sampleCount = 1;
     descriptor.mipLevelCount = 1;
     descriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
     descriptor.format = wgpu::TextureFormat::Depth32Float;

     // We can only really test Depth32Float here because Depth24Plus(Stencil8)? may be in an unknown
     // format.
     // TODO(crbug.com/dawn/145): Test other formats via sampling.
     wgpu::Texture texture = device.CreateTexture(&descriptor);
     std::vector<float> expected(kSize * kSize, 1.f);
     EXPECT_TEXTURE_EQ(expected.data(), texture, 0, 0, kSize, kSize, 0, 0);
 }

 // Test that non-zero mip level clears 0xFF because toggle is enabled.
 TEST_P(NonzeroTextureCreationTests, MipMapClears) {
     constexpr uint32_t mipLevels = 4;

     wgpu::TextureDescriptor descriptor;
     descriptor.dimension = wgpu::TextureDimension::e2D;
     descriptor.size.width = kSize;
     descriptor.size.height = kSize;
     descriptor.size.depth = 1;
     descriptor.sampleCount = 1;
     descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
     descriptor.mipLevelCount = mipLevels;
     descriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
     wgpu::Texture texture = device.CreateTexture(&descriptor);

     std::vector<RGBA8> expected;
     RGBA8 filled(255, 255, 255, 255);
     for (uint32_t i = 0; i < kSize * kSize; ++i) {
         expected.push_back(filled);
     }
     uint32_t mipSize = kSize >> 2;
     EXPECT_TEXTURE_RGBA8_EQ(expected.data(), texture, 0, 0, mipSize, mipSize, 2, 0);
 }

 // Test that non-zero array layers clears 0xFF because toggle is enabled.
 TEST_P(NonzeroTextureCreationTests, ArrayLayerClears) {
     constexpr uint32_t arrayLayers = 4;

     wgpu::TextureDescriptor descriptor;
     descriptor.dimension = wgpu::TextureDimension::e2D;
     descriptor.size.width = kSize;
     descriptor.size.height = kSize;
     descriptor.size.depth = arrayLayers;
     descriptor.sampleCount = 1;
     descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
     descriptor.mipLevelCount = 1;
     descriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
     wgpu::Texture texture = device.CreateTexture(&descriptor);

     std::vector<RGBA8> expected;
     RGBA8 filled(255, 255, 255, 255);
     for (uint32_t i = 0; i < kSize * kSize; ++i) {
         expected.push_back(filled);
     }

     EXPECT_TEXTURE_RGBA8_EQ(expected.data(), texture, 0, 0, kSize, kSize, 0, 2);
 }

 // Test that nonrenderable texture formats clear 0x01 because toggle is enabled
 TEST_P(NonzeroTextureCreationTests, NonrenderableTextureFormat) {
     wgpu::TextureDescriptor descriptor;
     descriptor.dimension = wgpu::TextureDimension::e2D;
     descriptor.size.width = kSize;
     descriptor.size.height = kSize;
     descriptor.size.depth = 1;
     descriptor.sampleCount = 1;
     descriptor.format = wgpu::TextureFormat::RGBA8Snorm;
     descriptor.mipLevelCount = 1;
     descriptor.usage = wgpu::TextureUsage::CopySrc;
     wgpu::Texture texture = device.CreateTexture(&descriptor);

     // Set buffer with dirty data so we know it is cleared by the lazy cleared texture copy
     uint32_t bufferSize = 4 * kSize * kSize;
     std::vector<uint8_t> data(bufferSize, 100);
     wgpu::Buffer bufferDst = utils::CreateBufferFromData(
         device, data.data(), static_cast<uint32_t>(data.size()), wgpu::BufferUsage::CopySrc);

     wgpu::BufferCopyView bufferCopyView = utils::CreateBufferCopyView(bufferDst, 0, kSize * 4);
     wgpu::TextureCopyView textureCopyView = utils::CreateTextureCopyView(texture, 0, {0, 0, 0});
     wgpu::Extent3D copySize = {kSize, kSize, 1};

     wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
     encoder.CopyTextureToBuffer(&textureCopyView, &bufferCopyView, &copySize);
     wgpu::CommandBuffer commands = encoder.Finish();
     queue.Submit(1, &commands);

     uint32_t expectedBytes = IsVulkan() ? 0x7F7F7F7F : 0x01010101;
     std::vector<uint32_t> expected(bufferSize, expectedBytes);
     EXPECT_BUFFER_U32_RANGE_EQ(expected.data(), bufferDst, 0, 8);
 }

 // Test that textures with more than 1 array layers and nonrenderable texture formats clear to 0x01
 // because toggle is enabled
 TEST_P(NonzeroTextureCreationTests, NonRenderableTextureClearWithMultiArrayLayers) {
     wgpu::TextureDescriptor descriptor;
     descriptor.dimension = wgpu::TextureDimension::e2D;
     descriptor.size.width = kSize;
     descriptor.size.height = kSize;
     descriptor.size.depth = 2;
     descriptor.sampleCount = 1;
     descriptor.format = wgpu::TextureFormat::RGBA8Snorm;
     descriptor.mipLevelCount = 1;
     descriptor.usage = wgpu::TextureUsage::CopySrc;
     wgpu::Texture texture = device.CreateTexture(&descriptor);

     // Set buffer with dirty data so we know it is cleared by the lazy cleared texture copy
     uint32_t bufferSize = 4 * kSize * kSize;
     std::vector<uint8_t> data(bufferSize, 100);
     wgpu::Buffer bufferDst = utils::CreateBufferFromData(
         device, data.data(), static_cast<uint32_t>(data.size()), wgpu::BufferUsage::CopySrc);

     wgpu::BufferCopyView bufferCopyView = utils::CreateBufferCopyView(bufferDst, 0, kSize * 4);
     wgpu::TextureCopyView textureCopyView = utils::CreateTextureCopyView(texture, 0, {0, 0, 1});
     wgpu::Extent3D copySize = {kSize, kSize, 1};

     wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
     encoder.CopyTextureToBuffer(&textureCopyView, &bufferCopyView, &copySize);
     wgpu::CommandBuffer commands = encoder.Finish();
     queue.Submit(1, &commands);

     uint32_t expectedBytes = IsVulkan() ? 0x7F7F7F7F : 0x01010101;
     std::vector<uint32_t> expected(bufferSize, expectedBytes);
     EXPECT_BUFFER_U32_RANGE_EQ(expected.data(), bufferDst, 0, 8);
 }

 // Test that all subresources of a renderable texture are filled because the toggle is enabled.
 TEST_P(NonzeroTextureCreationTests, AllSubresourcesFilled) {
     wgpu::TextureDescriptor baseDescriptor;
     baseDescriptor.dimension = wgpu::TextureDimension::e2D;
     baseDescriptor.size.width = kSize;
     baseDescriptor.size.height = kSize;
     baseDescriptor.size.depth = 1;
     baseDescriptor.sampleCount = 1;
     baseDescriptor.format = wgpu::TextureFormat::RGBA8Unorm;
     baseDescriptor.mipLevelCount = 1;
     baseDescriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;

     RGBA8 filled(255, 255, 255, 255);

     {
         wgpu::TextureDescriptor descriptor = baseDescriptor;
         // Some textures may be cleared with render pass load/store ops.
         // Test above the max attachment count.
         descriptor.size.depth = kMaxColorAttachments + 1;
         wgpu::Texture texture = device.CreateTexture(&descriptor);

         for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
             EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, 0, i);
         }
     }

     {
         wgpu::TextureDescriptor descriptor = baseDescriptor;
         descriptor.mipLevelCount = 3;
         wgpu::Texture texture = device.CreateTexture(&descriptor);

         for (uint32_t i = 0; i < descriptor.mipLevelCount; ++i) {
             EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, i, 0);
         }
     }

     {
         wgpu::TextureDescriptor descriptor = baseDescriptor;
         // Some textures may be cleared with render pass load/store ops.
         // Test above the max attachment count.
         descriptor.size.depth = kMaxColorAttachments + 1;
         descriptor.mipLevelCount = 3;
         wgpu::Texture texture = device.CreateTexture(&descriptor);

         for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
             for (uint32_t j = 0; j < descriptor.mipLevelCount; ++j) {
                 EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, j, i);
             }
         }
     }
 }

 // Test that all subresources of a nonrenderable texture are filled because the toggle is enabled.
 TEST_P(NonzeroTextureCreationTests, NonRenderableAllSubresourcesFilled) {
     wgpu::TextureDescriptor baseDescriptor;
     baseDescriptor.dimension = wgpu::TextureDimension::e2D;
     baseDescriptor.size.width = kSize;
     baseDescriptor.size.height = kSize;
     baseDescriptor.size.depth = 1;
     baseDescriptor.sampleCount = 1;
     baseDescriptor.format = wgpu::TextureFormat::RGBA8Snorm;
     baseDescriptor.mipLevelCount = 1;
     baseDescriptor.usage = wgpu::TextureUsage::CopySrc;

     RGBA8 filled = IsVulkan() ? RGBA8(127, 127, 127, 127) : RGBA8(1, 1, 1, 1);

     {
         wgpu::TextureDescriptor descriptor = baseDescriptor;
         // Some textures may be cleared with render pass load/store ops.
         // Test above the max attachment count.
         descriptor.size.depth = kMaxColorAttachments + 1;
         wgpu::Texture texture = device.CreateTexture(&descriptor);

         for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
             EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, 0, i);
         }
     }

     {
         wgpu::TextureDescriptor descriptor = baseDescriptor;
         descriptor.mipLevelCount = 3;
         wgpu::Texture texture = device.CreateTexture(&descriptor);

         for (uint32_t i = 0; i < descriptor.mipLevelCount; ++i) {
             EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, i, 0);
         }
     }

     {
         wgpu::TextureDescriptor descriptor = baseDescriptor;
         // Some textures may be cleared with render pass load/store ops.
         // Test above the max attachment count.
         descriptor.size.depth = kMaxColorAttachments + 1;
         descriptor.mipLevelCount = 3;
         wgpu::Texture texture = device.CreateTexture(&descriptor);

         for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
             for (uint32_t j = 0; j < descriptor.mipLevelCount; ++j) {
                 EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, j, i);
             }
         }
     }
 }

 DAWN_INSTANTIATE_TEST(NonzeroTextureCreationTests,
                       D3D12Backend({"nonzero_clear_resources_on_creation_for_testing"},
                                    {"lazy_clear_resource_on_first_use"}),
                       MetalBackend({"nonzero_clear_resources_on_creation_for_testing"},
                                    {"lazy_clear_resource_on_first_use"}),
                       OpenGLBackend({"nonzero_clear_resources_on_creation_for_testing"},
                                     {"lazy_clear_resource_on_first_use"}),
                       VulkanBackend({"nonzero_clear_resources_on_creation_for_testing"},
                                     {"lazy_clear_resource_on_first_use"}));
	// Copyright 2019 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 "tests/DawnTest.h"

	#include "common/Constants.h"
	#include "utils/ComboRenderPipelineDescriptor.h"
	#include "utils/WGPUHelpers.h"

	class NonzeroTextureCreationTests : public DawnTest {
	protected:
	void SetUp() override {
	DawnTest::SetUp();
	}

	constexpr static uint32_t kSize = 128;
	};

	// Test that texture clears 0xFF because toggle is enabled.
	TEST_P(NonzeroTextureCreationTests, TextureCreationClears) {
	wgpu::TextureDescriptor descriptor;
	descriptor.dimension = wgpu::TextureDimension::e2D;
	descriptor.size.width = kSize;
	descriptor.size.height = kSize;
	descriptor.size.depth = 1;
	descriptor.sampleCount = 1;
	descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
	descriptor.mipLevelCount = 1;
	descriptor.usage = wgpu::TextureUsage::RenderAttachment \| wgpu::TextureUsage::CopySrc;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	RGBA8 filled(255, 255, 255, 255);
	EXPECT_PIXEL_RGBA8_EQ(filled, texture, 0, 0);
	}

	// Test that a depth texture clears 0xFF because toggle is enabled.
	TEST_P(NonzeroTextureCreationTests, Depth32TextureCreationDepthClears) {
	// Copies from depth textures not supported on the OpenGL backend right now.
	DAWN_SKIP_TEST_IF(IsOpenGL());

	wgpu::TextureDescriptor descriptor;
	descriptor.dimension = wgpu::TextureDimension::e2D;
	descriptor.size.width = kSize;
	descriptor.size.height = kSize;
	descriptor.size.depth = 1;
	descriptor.sampleCount = 1;
	descriptor.mipLevelCount = 1;
	descriptor.usage = wgpu::TextureUsage::RenderAttachment \| wgpu::TextureUsage::CopySrc;
	descriptor.format = wgpu::TextureFormat::Depth32Float;

	// We can only really test Depth32Float here because Depth24Plus(Stencil8)? may be in an unknown
	// format.
	// TODO(crbug.com/dawn/145): Test other formats via sampling.
	wgpu::Texture texture = device.CreateTexture(&descriptor);
	std::vector<float> expected(kSize * kSize, 1.f);
	EXPECT_TEXTURE_EQ(expected.data(), texture, 0, 0, kSize, kSize, 0, 0);
	}

	// Test that non-zero mip level clears 0xFF because toggle is enabled.
	TEST_P(NonzeroTextureCreationTests, MipMapClears) {
	constexpr uint32_t mipLevels = 4;

	wgpu::TextureDescriptor descriptor;
	descriptor.dimension = wgpu::TextureDimension::e2D;
	descriptor.size.width = kSize;
	descriptor.size.height = kSize;
	descriptor.size.depth = 1;
	descriptor.sampleCount = 1;
	descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
	descriptor.mipLevelCount = mipLevels;
	descriptor.usage = wgpu::TextureUsage::RenderAttachment \| wgpu::TextureUsage::CopySrc;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	std::vector<RGBA8> expected;
	RGBA8 filled(255, 255, 255, 255);
	for (uint32_t i = 0; i < kSize * kSize; ++i) {
	expected.push_back(filled);
	}
	uint32_t mipSize = kSize >> 2;
	EXPECT_TEXTURE_RGBA8_EQ(expected.data(), texture, 0, 0, mipSize, mipSize, 2, 0);
	}

	// Test that non-zero array layers clears 0xFF because toggle is enabled.
	TEST_P(NonzeroTextureCreationTests, ArrayLayerClears) {
	constexpr uint32_t arrayLayers = 4;

	wgpu::TextureDescriptor descriptor;
	descriptor.dimension = wgpu::TextureDimension::e2D;
	descriptor.size.width = kSize;
	descriptor.size.height = kSize;
	descriptor.size.depth = arrayLayers;
	descriptor.sampleCount = 1;
	descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
	descriptor.mipLevelCount = 1;
	descriptor.usage = wgpu::TextureUsage::RenderAttachment \| wgpu::TextureUsage::CopySrc;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	std::vector<RGBA8> expected;
	RGBA8 filled(255, 255, 255, 255);
	for (uint32_t i = 0; i < kSize * kSize; ++i) {
	expected.push_back(filled);
	}

	EXPECT_TEXTURE_RGBA8_EQ(expected.data(), texture, 0, 0, kSize, kSize, 0, 2);
	}

	// Test that nonrenderable texture formats clear 0x01 because toggle is enabled
	TEST_P(NonzeroTextureCreationTests, NonrenderableTextureFormat) {
	wgpu::TextureDescriptor descriptor;
	descriptor.dimension = wgpu::TextureDimension::e2D;
	descriptor.size.width = kSize;
	descriptor.size.height = kSize;
	descriptor.size.depth = 1;
	descriptor.sampleCount = 1;
	descriptor.format = wgpu::TextureFormat::RGBA8Snorm;
	descriptor.mipLevelCount = 1;
	descriptor.usage = wgpu::TextureUsage::CopySrc;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	// Set buffer with dirty data so we know it is cleared by the lazy cleared texture copy
	uint32_t bufferSize = 4 * kSize * kSize;
	std::vector<uint8_t> data(bufferSize, 100);
	wgpu::Buffer bufferDst = utils::CreateBufferFromData(
	device, data.data(), static_cast<uint32_t>(data.size()), wgpu::BufferUsage::CopySrc);

	wgpu::BufferCopyView bufferCopyView = utils::CreateBufferCopyView(bufferDst, 0, kSize * 4);
	wgpu::TextureCopyView textureCopyView = utils::CreateTextureCopyView(texture, 0, {0, 0, 0});
	wgpu::Extent3D copySize = {kSize, kSize, 1};

	wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
	encoder.CopyTextureToBuffer(&textureCopyView, &bufferCopyView, &copySize);
	wgpu::CommandBuffer commands = encoder.Finish();
	queue.Submit(1, &commands);

	uint32_t expectedBytes = IsVulkan() ? 0x7F7F7F7F : 0x01010101;
	std::vector<uint32_t> expected(bufferSize, expectedBytes);
	EXPECT_BUFFER_U32_RANGE_EQ(expected.data(), bufferDst, 0, 8);
	}

	// Test that textures with more than 1 array layers and nonrenderable texture formats clear to 0x01
	// because toggle is enabled
	TEST_P(NonzeroTextureCreationTests, NonRenderableTextureClearWithMultiArrayLayers) {
	wgpu::TextureDescriptor descriptor;
	descriptor.dimension = wgpu::TextureDimension::e2D;
	descriptor.size.width = kSize;
	descriptor.size.height = kSize;
	descriptor.size.depth = 2;
	descriptor.sampleCount = 1;
	descriptor.format = wgpu::TextureFormat::RGBA8Snorm;
	descriptor.mipLevelCount = 1;
	descriptor.usage = wgpu::TextureUsage::CopySrc;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	// Set buffer with dirty data so we know it is cleared by the lazy cleared texture copy
	uint32_t bufferSize = 4 * kSize * kSize;
	std::vector<uint8_t> data(bufferSize, 100);
	wgpu::Buffer bufferDst = utils::CreateBufferFromData(
	device, data.data(), static_cast<uint32_t>(data.size()), wgpu::BufferUsage::CopySrc);

	wgpu::BufferCopyView bufferCopyView = utils::CreateBufferCopyView(bufferDst, 0, kSize * 4);
	wgpu::TextureCopyView textureCopyView = utils::CreateTextureCopyView(texture, 0, {0, 0, 1});
	wgpu::Extent3D copySize = {kSize, kSize, 1};

	wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
	encoder.CopyTextureToBuffer(&textureCopyView, &bufferCopyView, &copySize);
	wgpu::CommandBuffer commands = encoder.Finish();
	queue.Submit(1, &commands);

	uint32_t expectedBytes = IsVulkan() ? 0x7F7F7F7F : 0x01010101;
	std::vector<uint32_t> expected(bufferSize, expectedBytes);
	EXPECT_BUFFER_U32_RANGE_EQ(expected.data(), bufferDst, 0, 8);
	}

	// Test that all subresources of a renderable texture are filled because the toggle is enabled.
	TEST_P(NonzeroTextureCreationTests, AllSubresourcesFilled) {
	wgpu::TextureDescriptor baseDescriptor;
	baseDescriptor.dimension = wgpu::TextureDimension::e2D;
	baseDescriptor.size.width = kSize;
	baseDescriptor.size.height = kSize;
	baseDescriptor.size.depth = 1;
	baseDescriptor.sampleCount = 1;
	baseDescriptor.format = wgpu::TextureFormat::RGBA8Unorm;
	baseDescriptor.mipLevelCount = 1;
	baseDescriptor.usage = wgpu::TextureUsage::RenderAttachment \| wgpu::TextureUsage::CopySrc;

	RGBA8 filled(255, 255, 255, 255);

	{
	wgpu::TextureDescriptor descriptor = baseDescriptor;
	// Some textures may be cleared with render pass load/store ops.
	// Test above the max attachment count.
	descriptor.size.depth = kMaxColorAttachments + 1;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
	EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, 0, i);
	}
	}

	{
	wgpu::TextureDescriptor descriptor = baseDescriptor;
	descriptor.mipLevelCount = 3;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	for (uint32_t i = 0; i < descriptor.mipLevelCount; ++i) {
	EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, i, 0);
	}
	}

	{
	wgpu::TextureDescriptor descriptor = baseDescriptor;
	// Some textures may be cleared with render pass load/store ops.
	// Test above the max attachment count.
	descriptor.size.depth = kMaxColorAttachments + 1;
	descriptor.mipLevelCount = 3;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
	for (uint32_t j = 0; j < descriptor.mipLevelCount; ++j) {
	EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, j, i);
	}
	}
	}
	}

	// Test that all subresources of a nonrenderable texture are filled because the toggle is enabled.
	TEST_P(NonzeroTextureCreationTests, NonRenderableAllSubresourcesFilled) {
	wgpu::TextureDescriptor baseDescriptor;
	baseDescriptor.dimension = wgpu::TextureDimension::e2D;
	baseDescriptor.size.width = kSize;
	baseDescriptor.size.height = kSize;
	baseDescriptor.size.depth = 1;
	baseDescriptor.sampleCount = 1;
	baseDescriptor.format = wgpu::TextureFormat::RGBA8Snorm;
	baseDescriptor.mipLevelCount = 1;
	baseDescriptor.usage = wgpu::TextureUsage::CopySrc;

	RGBA8 filled = IsVulkan() ? RGBA8(127, 127, 127, 127) : RGBA8(1, 1, 1, 1);

	{
	wgpu::TextureDescriptor descriptor = baseDescriptor;
	// Some textures may be cleared with render pass load/store ops.
	// Test above the max attachment count.
	descriptor.size.depth = kMaxColorAttachments + 1;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
	EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, 0, i);
	}
	}

	{
	wgpu::TextureDescriptor descriptor = baseDescriptor;
	descriptor.mipLevelCount = 3;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	for (uint32_t i = 0; i < descriptor.mipLevelCount; ++i) {
	EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, i, 0);
	}
	}

	{
	wgpu::TextureDescriptor descriptor = baseDescriptor;
	// Some textures may be cleared with render pass load/store ops.
	// Test above the max attachment count.
	descriptor.size.depth = kMaxColorAttachments + 1;
	descriptor.mipLevelCount = 3;
	wgpu::Texture texture = device.CreateTexture(&descriptor);

	for (uint32_t i = 0; i < descriptor.size.depth; ++i) {
	for (uint32_t j = 0; j < descriptor.mipLevelCount; ++j) {
	EXPECT_TEXTURE_RGBA8_EQ(&filled, texture, 0, 0, 1, 1, j, i);
	}
	}
	}
	}

	DAWN_INSTANTIATE_TEST(NonzeroTextureCreationTests,
	D3D12Backend({"nonzero_clear_resources_on_creation_for_testing"},
	{"lazy_clear_resource_on_first_use"}),
	MetalBackend({"nonzero_clear_resources_on_creation_for_testing"},
	{"lazy_clear_resource_on_first_use"}),
	OpenGLBackend({"nonzero_clear_resources_on_creation_for_testing"},
	{"lazy_clear_resource_on_first_use"}),
	VulkanBackend({"nonzero_clear_resources_on_creation_for_testing"},
	{"lazy_clear_resource_on_first_use"}));