Expand coverage of NonzeroTextureCreationTests

Expand coverage for these tests by using combinatorial test
parameterization. Covers more cases and expands coverage to
compressed textures. This caught a bug on Vulkan where only the
first region for multi-layer compressed texture copies was cleared.
It also caught a driver bug on some Intel platforms, where clearing
the non-zero mip of a depth texture does not work.

Bug: dawn:780
Change-Id: Ic601bae111c1c2dd150f569d7e02759ca765201e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/51680
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>

src/dawn_native/vulkan/TextureVk.cpp

@@ -1072,7 +1072,7 @@ namespace dawn_native { namespace vulkan {
             device->fn.CmdCopyBufferToImage(
                 recordingContext->commandBuffer,
                 ToBackend(uploadHandle.stagingBuffer)->GetBufferHandle(), GetHandle(),
-                VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, regions.data());
+                VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, regions.size(), regions.data());
         } else {
             for (uint32_t level = range.baseMipLevel; level < range.baseMipLevel + range.levelCount;
                  ++level) {

src/tests/DawnTest.h

@@ -39,6 +39,13 @@
 #define EXPECT_BUFFER(buffer, offset, size, expectation) \
     AddBufferExpectation(__FILE__, __LINE__, buffer, offset, size, expectation)
 
+#define EXPECT_BUFFER_U8_EQ(expected, buffer, offset) \
+    EXPECT_BUFFER(buffer, offset, sizeof(uint8_t), new ::detail::ExpectEq<uint8_t>(expected))
+
+#define EXPECT_BUFFER_U8_RANGE_EQ(expected, buffer, offset, count) \
+    EXPECT_BUFFER(buffer, offset, sizeof(uint8_t) * (count),       \
+                  new ::detail::ExpectEq<uint8_t>(expected, count))
+
 #define EXPECT_BUFFER_U16_EQ(expected, buffer, offset) \
     EXPECT_BUFFER(buffer, offset, sizeof(uint16_t), new ::detail::ExpectEq<uint16_t>(expected))
 
@@ -174,6 +181,7 @@ namespace utils {
 
 namespace detail {
     class Expectation;
+    class CustomTextureExpectation;
 
     template <typename T>
     class ExpectEq;
@@ -361,6 +369,22 @@ class DawnTestBase {
                                          origin, {1, 1}, level, aspect, sizeof(T), bytesPerRow);
     }
 
+    template <typename E,
+              typename = typename std::enable_if<
+                  std::is_base_of<detail::CustomTextureExpectation, E>::value>::type>
+    std::ostringstream& AddTextureExpectation(const char* file,
+                                              int line,
+                                              E* expectation,
+                                              const wgpu::Texture& texture,
+                                              wgpu::Origin3D origin,
+                                              wgpu::Extent3D extent,
+                                              uint32_t level = 0,
+                                              wgpu::TextureAspect aspect = wgpu::TextureAspect::All,
+                                              uint32_t bytesPerRow = 0) {
+        return AddTextureExpectationImpl(file, line, expectation, texture, origin, extent, level,
+                                         aspect, expectation->DataSize(), bytesPerRow);
+    }
+
     template <typename T>
     std::ostringstream& AddTextureBetweenColorsExpectation(
         const char* file,
@@ -634,6 +658,13 @@ namespace detail {
     // each counterparts. It doesn't matter which value is higher or lower. Essentially color =
     // lerp(color0, color1, t) where t is [0,1]. But I don't want to be too strict here.
     extern template class ExpectBetweenColors<RGBA8>;
+
+    class CustomTextureExpectation : public Expectation {
+      public:
+        virtual ~CustomTextureExpectation() = default;
+        virtual uint32_t DataSize() = 0;
+    };
+
 }  // namespace detail
 
 #endif  // TESTS_DAWNTEST_H_

src/tests/end2end/NonzeroTextureCreationTests.cpp

@@ -15,257 +15,276 @@
 #include "tests/DawnTest.h"
 
 #include "common/Constants.h"
+#include "common/Math.h"
 #include "utils/ComboRenderPipelineDescriptor.h"
+#include "utils/TestUtils.h"
 #include "utils/WGPUHelpers.h"
 
-class NonzeroTextureCreationTests : public DawnTest {
-  protected:
-    constexpr static uint32_t kSize = 128;
-    constexpr static uint32_t kDepthOrArrayLayers = 7;
-};
+namespace {
 
-// Test that texture clears 0xFF because toggle is enabled.
+    using Format = wgpu::TextureFormat;
+    using Usage = wgpu::TextureUsage;
+    using Dimension = wgpu::TextureDimension;
+    using DepthOrArrayLayers = uint32_t;
+    using Mip = uint32_t;
+
+    DAWN_TEST_PARAM_STRUCT(Params, Format, Usage, Dimension, DepthOrArrayLayers, Mip)
+
+    template <typename T>
+    class ExpectNonZero : public detail::CustomTextureExpectation {
+      public:
+        uint32_t DataSize() override {
+            return sizeof(T);
+        }
+
+        testing::AssertionResult Check(const void* data, size_t size) override {
+            ASSERT(size % DataSize() == 0 && size > 0);
+            const T* actual = static_cast<const T*>(data);
+            T value = *actual;
+            if (value == T(0)) {
+                return testing::AssertionFailure()
+                       << "Expected data to be non-zero, was " << value << std::endl;
+            }
+            for (size_t i = 0; i < size / DataSize(); ++i) {
+                if (actual[i] != value) {
+                    return testing::AssertionFailure()
+                           << "Expected data[" << i << "] to be " << value << ", actual "
+                           << actual[i] << std::endl;
+                }
+            }
+
+            return testing::AssertionSuccess();
+        }
+    };
+
+#define EXPECT_TEXTURE_NONZERO(T, ...) \
+    AddTextureExpectation(__FILE__, __LINE__, new ExpectNonZero<T>(), __VA_ARGS__)
+
+    class NonzeroTextureCreationTests : public DawnTestWithParams<Params> {
+      protected:
+        constexpr static uint32_t kSize = 128;
+        constexpr static uint32_t kMipLevelCount = 4;
+
+        std::vector<const char*> GetRequiredExtensions() override {
+            if (GetParam().mFormat == wgpu::TextureFormat::BC1RGBAUnorm &&
+                SupportsExtensions({"texture_compression_bc"})) {
+                return {"texture_compression_bc"};
+            }
+            return {};
+        }
+
+        void Run() {
+            DAWN_TEST_UNSUPPORTED_IF(GetParam().mFormat == wgpu::TextureFormat::BC1RGBAUnorm &&
+                                     !SupportsExtensions({"texture_compression_bc"}));
+
+            // TODO(crbug.com/dawn/667): Work around the fact that some platforms do not support
+            // reading from Snorm textures.
+            DAWN_TEST_UNSUPPORTED_IF(GetParam().mFormat == wgpu::TextureFormat::RGBA8Snorm &&
+                                     HasToggleEnabled("disable_snorm_read"));
+
+            // TODO(crbug.com/dawn/547): 3D texture copies not fully implemented on D3D12.
+            // TODO(crbug.com/angleproject/5967): This texture readback hits an assert in ANGLE.
+            DAWN_SUPPRESS_TEST_IF(GetParam().mDimension == wgpu::TextureDimension::e3D &&
+                                  (IsANGLE() || IsD3D12()));
+
+            // TODO(crbug.com/dawn/791): Determine Intel specific platforms this occurs on, and
+            // implement a workaround on all backends (happens on Windows too, but not on our test
+            // machines).
+            DAWN_SUPPRESS_TEST_IF(GetParam().mFormat == wgpu::TextureFormat::Depth32Float &&
+                                  IsMetal() && IsIntel() && GetParam().mMip != 0);
+
+            // Copies from depth textures not fully supported on the OpenGL backend right now.
+            DAWN_SUPPRESS_TEST_IF(GetParam().mFormat == wgpu::TextureFormat::Depth32Float &&
+                                  (IsOpenGL() || IsOpenGLES()));
+
+            // GL may support the extension, but reading data back is not implemented.
+            DAWN_TEST_UNSUPPORTED_IF(GetParam().mFormat == wgpu::TextureFormat::BC1RGBAUnorm &&
+                                     (IsOpenGL() || IsOpenGLES()));
+
+            wgpu::TextureDescriptor descriptor;
+            descriptor.dimension = GetParam().mDimension;
+            descriptor.size.width = kSize;
+            descriptor.size.height = kSize;
+            descriptor.size.depthOrArrayLayers = GetParam().mDepthOrArrayLayers;
+            descriptor.sampleCount = 1;
+            descriptor.format = GetParam().mFormat;
+            descriptor.usage = GetParam().mUsage;
+            descriptor.mipLevelCount = kMipLevelCount;
+
+            wgpu::Texture texture = device.CreateTexture(&descriptor);
+
+            uint32_t mip = GetParam().mMip;
+            uint32_t mipSize = std::max(kSize >> mip, 1u);
+            uint32_t depthOrArrayLayers = GetParam().mDimension == wgpu::TextureDimension::e3D
+                                              ? std::max(GetParam().mDepthOrArrayLayers >> mip, 1u)
+                                              : GetParam().mDepthOrArrayLayers;
+
+            switch (GetParam().mFormat) {
+                case wgpu::TextureFormat::R8Unorm: {
+                    EXPECT_TEXTURE_EQ(new ExpectNonZero<uint8_t>(), texture, {0, 0, 0},
+                                      {mipSize, mipSize, depthOrArrayLayers}, mip);
+                    break;
+                }
+                case wgpu::TextureFormat::RG8Unorm: {
+                    EXPECT_TEXTURE_EQ(new ExpectNonZero<uint16_t>(), texture, {0, 0, 0},
+                                      {mipSize, mipSize, depthOrArrayLayers}, mip);
+                    break;
+                }
+                case wgpu::TextureFormat::RGBA8Unorm:
+                case wgpu::TextureFormat::RGBA8Snorm: {
+                    EXPECT_TEXTURE_EQ(new ExpectNonZero<uint32_t>(), texture, {0, 0, 0},
+                                      {mipSize, mipSize, depthOrArrayLayers}, mip);
+                    break;
+                }
+                case wgpu::TextureFormat::Depth32Float: {
+                    EXPECT_TEXTURE_EQ(new ExpectNonZero<float>(), texture, {0, 0, 0},
+                                      {mipSize, mipSize, depthOrArrayLayers}, mip);
+                    break;
+                }
+                case wgpu::TextureFormat::BC1RGBAUnorm: {
+                    // Set buffer with dirty data so we know it is cleared by the lazy cleared
+                    // texture copy
+                    uint32_t blockWidth = utils::GetTextureFormatBlockWidth(GetParam().mFormat);
+                    uint32_t blockHeight = utils::GetTextureFormatBlockHeight(GetParam().mFormat);
+                    wgpu::Extent3D copySize = {Align(mipSize, blockWidth),
+                                               Align(mipSize, blockHeight), depthOrArrayLayers};
+
+                    uint32_t bytesPerRow =
+                        utils::GetMinimumBytesPerRow(GetParam().mFormat, copySize.width);
+                    uint32_t rowsPerImage = copySize.height / blockHeight;
+
+                    uint64_t bufferSize = utils::RequiredBytesInCopy(bytesPerRow, rowsPerImage,
+                                                                     copySize, GetParam().mFormat);
+
+                    std::vector<uint8_t> data(bufferSize, 100);
+                    wgpu::Buffer bufferDst = utils::CreateBufferFromData(
+                        device, data.data(), bufferSize, wgpu::BufferUsage::CopySrc);
+
+                    wgpu::ImageCopyBuffer imageCopyBuffer =
+                        utils::CreateImageCopyBuffer(bufferDst, 0, bytesPerRow, rowsPerImage);
+                    wgpu::ImageCopyTexture imageCopyTexture =
+                        utils::CreateImageCopyTexture(texture, mip, {0, 0, 0});
+
+                    wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
+                    encoder.CopyTextureToBuffer(&imageCopyTexture, &imageCopyBuffer, &copySize);
+                    wgpu::CommandBuffer commands = encoder.Finish();
+                    queue.Submit(1, &commands);
+
+                    uint32_t copiedWidthInBytes =
+                        utils::GetTexelBlockSizeInBytes(GetParam().mFormat) * copySize.width /
+                        blockWidth;
+                    uint8_t* d = data.data();
+                    for (uint32_t z = 0; z < depthOrArrayLayers; ++z) {
+                        for (uint32_t row = 0; row < copySize.height / blockHeight; ++row) {
+                            std::fill_n(d, copiedWidthInBytes, 1);
+                            d += bytesPerRow;
+                        }
+                    }
+                    EXPECT_BUFFER_U8_RANGE_EQ(data.data(), bufferDst, 0, bufferSize);
+                    break;
+                }
+                default:
+                    UNREACHABLE();
+            }
+        }
+    };
+
+    class NonzeroNonrenderableTextureCreationTests : public NonzeroTextureCreationTests {};
+    class NonzeroCompressedTextureCreationTests : public NonzeroTextureCreationTests {};
+    class NonzeroDepthTextureCreationTests : public NonzeroTextureCreationTests {};
+
+}  // anonymous namespace
+
+// Test that texture clears to a non-zero value 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.depthOrArrayLayers = 1;
-    descriptor.sampleCount = 1;
-    descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
-    descriptor.mipLevelCount = 1;
-    descriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
-
-    // 2D
-    {
-        wgpu::Texture texture = device.CreateTexture(&descriptor);
-
-        std::vector<RGBA8> expected(kSize * kSize, RGBA8(255, 255, 255, 255));
-        EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0}, {kSize, kSize});
-    }
-
-    // 2D Array
-    {
-        descriptor.dimension = wgpu::TextureDimension::e2D;
-        descriptor.size.depthOrArrayLayers = kDepthOrArrayLayers;
-        wgpu::Texture texture = device.CreateTexture(&descriptor);
-
-        std::vector<RGBA8> expected(kSize * kSize * kDepthOrArrayLayers, RGBA8(255, 255, 255, 255));
-        EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0, 0}, {kSize, kSize, kDepthOrArrayLayers});
-    }
+    Run();
 }
 
-// Test that 3D texture clears to nonzero because toggle is enabled.
-TEST_P(NonzeroTextureCreationTests, Texture3DCreationClears) {
-    // TODO(crbug.com/dawn/547): 3D texture copies not fully implemented on D3D12.
-    // TODO(crbug.com/angleproject/5967): This texture readback hits an assert in ANGLE.
-    DAWN_TEST_UNSUPPORTED_IF(IsD3D12());
-    DAWN_SUPPRESS_TEST_IF(IsANGLE());
-
-    wgpu::TextureDescriptor descriptor;
-    descriptor.dimension = wgpu::TextureDimension::e3D;
-    descriptor.size.width = kSize;
-    descriptor.size.height = kSize;
-    descriptor.size.depthOrArrayLayers = kDepthOrArrayLayers;
-    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(kSize * kSize * kDepthOrArrayLayers, RGBA8(255, 255, 255, 255));
-    EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0, 0}, {kSize, kSize, kDepthOrArrayLayers});
+// Test that texture clears to a non-zero value because toggle is enabled.
+TEST_P(NonzeroNonrenderableTextureCreationTests, TextureCreationClears) {
+    Run();
 }
 
-// Test that a depth texture clears 0xFF because toggle is enabled.
-TEST_P(NonzeroTextureCreationTests, Depth32TextureCreationDepthClears) {
-    // Copies from depth textures not fully supported on the OpenGL backend right now.
-    DAWN_TEST_UNSUPPORTED_IF(IsOpenGL() || IsOpenGLES());
-
-    wgpu::TextureDescriptor descriptor;
-    descriptor.dimension = wgpu::TextureDimension::e2D;
-    descriptor.size.width = kSize;
-    descriptor.size.height = kSize;
-    descriptor.size.depthOrArrayLayers = 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.
-
-    // 2D
-    {
-        wgpu::Texture texture = device.CreateTexture(&descriptor);
-        std::vector<float> expected(kSize * kSize, 1.f);
-        EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0}, {kSize, kSize});
-    }
-
-    // 2D Array
-    {
-        descriptor.dimension = wgpu::TextureDimension::e2D;
-        descriptor.size.depthOrArrayLayers = kDepthOrArrayLayers;
-        wgpu::Texture texture = device.CreateTexture(&descriptor);
-        std::vector<float> expected(kSize * kSize * kDepthOrArrayLayers, 1.f);
-        EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0, 0}, {kSize, kSize, kDepthOrArrayLayers});
-    }
+// Test that texture clears to a non-zero value because toggle is enabled.
+TEST_P(NonzeroCompressedTextureCreationTests, TextureCreationClears) {
+    Run();
 }
 
-// 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.depthOrArrayLayers = 1;
-    descriptor.sampleCount = 1;
-    descriptor.format = wgpu::TextureFormat::RGBA8Unorm;
-    descriptor.mipLevelCount = mipLevels;
-    descriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
-
-    // 2D
-    {
-        wgpu::Texture texture = device.CreateTexture(&descriptor);
-        uint32_t mipSize = kSize >> 2;
-        std::vector<RGBA8> expected(mipSize * mipSize, RGBA8(255, 255, 255, 255));
-        EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0}, {mipSize, mipSize}, 2);
-    }
-
-    // 2D Array
-    {
-        descriptor.dimension = wgpu::TextureDimension::e2D;
-        descriptor.size.depthOrArrayLayers = kDepthOrArrayLayers;
-        wgpu::Texture texture = device.CreateTexture(&descriptor);
-        uint32_t mipSize = kSize >> 2;
-        std::vector<RGBA8> expected(mipSize * mipSize * kDepthOrArrayLayers,
-                                    RGBA8(255, 255, 255, 255));
-        EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0, 0},
-                          {mipSize, mipSize, kDepthOrArrayLayers}, 2);
-    }
-
-    // 3D
-    {
-        descriptor.dimension = wgpu::TextureDimension::e3D;
-        descriptor.size.depthOrArrayLayers = kDepthOrArrayLayers;
-        wgpu::Texture texture = device.CreateTexture(&descriptor);
-        uint32_t mipSize = kSize >> 2;
-        uint32_t mipDepth = kDepthOrArrayLayers >> 2;
-        std::vector<RGBA8> expected(mipSize * mipSize * mipDepth, RGBA8(255, 255, 255, 255));
-        EXPECT_TEXTURE_EQ(expected.data(), texture, {0, 0, 0}, {mipSize, mipSize, mipDepth}, 2);
-    }
+// Test that texture clears to a non-zero value because toggle is enabled.
+TEST_P(NonzeroDepthTextureCreationTests, TextureCreationClears) {
+    Run();
 }
 
-// Test that nonrenderable texture formats clear 0x01 because toggle is enabled
-TEST_P(NonzeroTextureCreationTests, NonrenderableTextureFormat) {
-    // TODO(crbug.com/dawn/667): Work around the fact that some platforms do not support reading
-    // from Snorm textures.
-    DAWN_TEST_UNSUPPORTED_IF(HasToggleEnabled("disable_snorm_read"));
+// TODO(crbug.com/794): Test/implement texture initialization for multisampled textures.
 
-    wgpu::TextureDescriptor descriptor;
-    descriptor.dimension = wgpu::TextureDimension::e2D;
-    descriptor.size.width = kSize;
-    descriptor.size.height = kSize;
-    descriptor.size.depthOrArrayLayers = 1;
-    descriptor.sampleCount = 1;
-    descriptor.format = wgpu::TextureFormat::RGBA8Snorm;
-    descriptor.mipLevelCount = 1;
-    descriptor.usage = wgpu::TextureUsage::CopySrc;
+DAWN_INSTANTIATE_TEST_P(
+    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"}),
+     OpenGLESBackend({"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"})},
+    {wgpu::TextureFormat::R8Unorm, wgpu::TextureFormat::RG8Unorm, wgpu::TextureFormat::RGBA8Unorm},
+    {wgpu::TextureUsage(wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc),
+     wgpu::TextureUsage::CopySrc},
+    {wgpu::TextureDimension::e2D, wgpu::TextureDimension::e3D},
+    {1u, 7u},
+    {0u, 1u, 2u, 3u});
 
-    // 2D
-    {
-        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 = kSize * kSize;
-        std::vector<uint8_t> data(sizeof(uint32_t) * bufferSize, 100);
-        wgpu::Buffer bufferDst = utils::CreateBufferFromData(
-            device, data.data(), static_cast<uint32_t>(data.size()), wgpu::BufferUsage::CopySrc);
-
-        wgpu::ImageCopyBuffer imageCopyBuffer =
-            utils::CreateImageCopyBuffer(bufferDst, 0, kSize * 4);
-        wgpu::ImageCopyTexture imageCopyTexture =
-            utils::CreateImageCopyTexture(texture, 0, {0, 0, 0});
-        wgpu::Extent3D copySize = {kSize, kSize, 1};
-
-        wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
-        encoder.CopyTextureToBuffer(&imageCopyTexture, &imageCopyBuffer, &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, expected.size());
-    }
-
-    // 2D Array
-    {
-        descriptor.dimension = wgpu::TextureDimension::e2D;
-        descriptor.size.depthOrArrayLayers = kDepthOrArrayLayers;
-        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 = kSize * kSize * kDepthOrArrayLayers;
-        std::vector<uint8_t> data(sizeof(uint32_t) * bufferSize, 100);
-        wgpu::Buffer bufferDst = utils::CreateBufferFromData(
-            device, data.data(), static_cast<uint32_t>(data.size()), wgpu::BufferUsage::CopySrc);
-
-        wgpu::ImageCopyBuffer imageCopyBuffer =
-            utils::CreateImageCopyBuffer(bufferDst, 0, kSize * 4, kSize);
-        wgpu::ImageCopyTexture imageCopyTexture =
-            utils::CreateImageCopyTexture(texture, 0, {0, 0, 0});
-        wgpu::Extent3D copySize = {kSize, kSize, kDepthOrArrayLayers};
-
-        wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
-        encoder.CopyTextureToBuffer(&imageCopyTexture, &imageCopyBuffer, &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, expected.size());
-    }
-
-    // 3D
-    {
-        descriptor.dimension = wgpu::TextureDimension::e3D;
-        descriptor.size.depthOrArrayLayers = kDepthOrArrayLayers;
-        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 = kSize * kSize * kDepthOrArrayLayers;
-        std::vector<uint8_t> data(sizeof(uint32_t) * bufferSize, 100);
-        wgpu::Buffer bufferDst = utils::CreateBufferFromData(
-            device, data.data(), static_cast<uint32_t>(data.size()), wgpu::BufferUsage::CopySrc);
-
-        wgpu::ImageCopyBuffer imageCopyBuffer =
-            utils::CreateImageCopyBuffer(bufferDst, 0, kSize * 4, kSize);
-        wgpu::ImageCopyTexture imageCopyTexture =
-            utils::CreateImageCopyTexture(texture, 0, {0, 0, 0});
-        wgpu::Extent3D copySize = {kSize, kSize, kDepthOrArrayLayers};
-
-        wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
-        encoder.CopyTextureToBuffer(&imageCopyTexture, &imageCopyBuffer, &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, expected.size());
-    }
-}
-
-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"}),
-                      OpenGLESBackend({"nonzero_clear_resources_on_creation_for_testing"},
+DAWN_INSTANTIATE_TEST_P(NonzeroNonrenderableTextureCreationTests,
+                        {D3D12Backend({"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"}));
+                         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"}),
+                         OpenGLESBackend({"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"})},
+                        {wgpu::TextureFormat::RGBA8Snorm},
+                        {wgpu::TextureUsage::CopySrc},
+                        {wgpu::TextureDimension::e2D, wgpu::TextureDimension::e3D},
+                        {1u, 7u},
+                        {0u, 1u, 2u, 3u});
+
+DAWN_INSTANTIATE_TEST_P(NonzeroCompressedTextureCreationTests,
+                        {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"}),
+                         OpenGLESBackend({"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"})},
+                        {wgpu::TextureFormat::BC1RGBAUnorm},
+                        {wgpu::TextureUsage::CopySrc},
+                        {wgpu::TextureDimension::e2D},
+                        {1u, 7u},
+                        {0u, 1u, 2u, 3u});
+
+DAWN_INSTANTIATE_TEST_P(NonzeroDepthTextureCreationTests,
+                        {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"}),
+                         OpenGLESBackend({"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"})},
+                        {wgpu::TextureFormat::Depth32Float},
+                        {wgpu::TextureUsage(wgpu::TextureUsage::RenderAttachment |
+                                            wgpu::TextureUsage::CopySrc),
+                         wgpu::TextureUsage::CopySrc},
+                        {wgpu::TextureDimension::e2D},
+                        {1u, 7u},
+                        {0u, 1u, 2u, 3u});

src/utils/TestUtils.cpp

@@ -26,7 +26,9 @@ namespace utils {
 
     uint32_t GetMinimumBytesPerRow(wgpu::TextureFormat format, uint32_t width) {
         const uint32_t bytesPerBlock = utils::GetTexelBlockSizeInBytes(format);
-        return Align(bytesPerBlock * width, kTextureBytesPerRowAlignment);
+        const uint32_t blockWidth = utils::GetTextureFormatBlockWidth(format);
+        ASSERT(width % blockWidth == 0);
+        return Align(bytesPerBlock * (width / blockWidth), kTextureBytesPerRowAlignment);
     }
 
     TextureDataCopyLayout GetTextureDataCopyLayoutForTexture2DAtLevel(