blit_pass_unittests.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include <cstdint>
#include "fml/mapping.h"
#include "gtest/gtest.h"
#include "impeller/base/validation.h"
#include "impeller/core/device_buffer.h"
#include "impeller/core/device_buffer_descriptor.h"
#include "impeller/core/formats.h"
#include "impeller/core/texture_descriptor.h"
#include "impeller/playground/playground_test.h"
#include "impeller/renderer/command_buffer.h"
 
namespace impeller {
namespace testing {
 
using BlitPassTest = PlaygroundTest;
INSTANTIATE_PLAYGROUND_SUITE(BlitPassTest);
 
TEST_P(BlitPassTest, BlitAcrossDifferentPixelFormatsFails) {
  ScopedValidationDisable scope;  // avoid noise in output.
  auto context = GetContext();
  auto cmd_buffer = context->CreateCommandBuffer();
  auto blit_pass = cmd_buffer->CreateBlitPass();
 
  TextureDescriptor src_desc;
  src_desc.format = PixelFormat::kA8UNormInt;
  src_desc.size = {100, 100};
  src_desc.storage_mode = StorageMode::kHostVisible;
  auto src = context->GetResourceAllocator()->CreateTexture(src_desc);
 
  TextureDescriptor dst_format;
  dst_format.format = PixelFormat::kR8G8B8A8UNormInt;
  dst_format.size = {100, 100};
  dst_format.storage_mode = StorageMode::kHostVisible;
  auto dst = context->GetResourceAllocator()->CreateTexture(dst_format);
 
  EXPECT_FALSE(blit_pass->AddCopy(src, dst));
}
 
TEST_P(BlitPassTest, BlitAcrossDifferentSampleCountsFails) {
  ScopedValidationDisable scope;  // avoid noise in output.
  auto context = GetContext();
  auto cmd_buffer = context->CreateCommandBuffer();
  auto blit_pass = cmd_buffer->CreateBlitPass();
 
  TextureDescriptor src_desc;
  src_desc.format = PixelFormat::kR8G8B8A8UNormInt;
  src_desc.sample_count = SampleCount::kCount4;
  src_desc.size = {100, 100};
  auto src = context->GetResourceAllocator()->CreateTexture(src_desc);
 
  TextureDescriptor dst_format;
  dst_format.format = PixelFormat::kR8G8B8A8UNormInt;
  dst_format.size = {100, 100};
  auto dst = context->GetResourceAllocator()->CreateTexture(dst_format);
 
  EXPECT_FALSE(blit_pass->AddCopy(src, dst));
}
 
TEST_P(BlitPassTest, BlitPassesForMatchingFormats) {
  ScopedValidationDisable scope;  // avoid noise in output.
  auto context = GetContext();
  auto cmd_buffer = context->CreateCommandBuffer();
  auto blit_pass = cmd_buffer->CreateBlitPass();
 
  TextureDescriptor src_desc;
  src_desc.format = PixelFormat::kR8G8B8A8UNormInt;
  src_desc.size = {100, 100};
  src_desc.storage_mode = StorageMode::kHostVisible;
  auto src = context->GetResourceAllocator()->CreateTexture(src_desc);
 
  TextureDescriptor dst_format;
  dst_format.format = PixelFormat::kR8G8B8A8UNormInt;
  dst_format.size = {100, 100};
  dst_format.storage_mode = StorageMode::kHostVisible;
  auto dst = context->GetResourceAllocator()->CreateTexture(dst_format);
 
  EXPECT_TRUE(blit_pass->AddCopy(src, dst));
}
 
TEST_P(BlitPassTest, ChecksInvalidSliceParameters) {
  ScopedValidationDisable scope;  // avoid noise in output.
  auto context = GetContext();
  auto cmd_buffer = context->CreateCommandBuffer();
  auto blit_pass = cmd_buffer->CreateBlitPass();
 
  TextureDescriptor dst_format;
  dst_format.storage_mode = StorageMode::kDevicePrivate;
  dst_format.format = PixelFormat::kR8G8B8A8UNormInt;
  dst_format.size = {100, 100};
  auto dst = context->GetResourceAllocator()->CreateTexture(dst_format);
 
  DeviceBufferDescriptor src_format;
  src_format.size = 40000;
  src_format.storage_mode = StorageMode::kHostVisible;
  auto src = context->GetResourceAllocator()->CreateBuffer(src_format);
 
  ASSERT_TRUE(dst);
  ASSERT_TRUE(src);
 
  EXPECT_FALSE(blit_pass->AddCopy(DeviceBuffer::AsBufferView(src), dst,
                                  std::nullopt, "", /*slice=*/25));
  EXPECT_FALSE(blit_pass->AddCopy(DeviceBuffer::AsBufferView(src), dst,
                                  std::nullopt, "", /*slice=*/6));
  EXPECT_TRUE(blit_pass->AddCopy(DeviceBuffer::AsBufferView(src), dst,
                                 std::nullopt, "", /*slice=*/0));
}
 
TEST_P(BlitPassTest, CanBlitSmallRegionToUninitializedTexture) {
  auto context = GetContext();
  auto cmd_buffer = context->CreateCommandBuffer();
  auto blit_pass = cmd_buffer->CreateBlitPass();
 
  TextureDescriptor dst_format;
  dst_format.storage_mode = StorageMode::kDevicePrivate;
  dst_format.format = PixelFormat::kR8G8B8A8UNormInt;
  dst_format.size = {1000, 1000};
  auto dst = context->GetResourceAllocator()->CreateTexture(dst_format);
 
  DeviceBufferDescriptor src_format;
  src_format.size = 4;
  src_format.storage_mode = StorageMode::kHostVisible;
  auto src = context->GetResourceAllocator()->CreateBuffer(src_format);
 
  ASSERT_TRUE(dst);
 
  EXPECT_TRUE(blit_pass->AddCopy(DeviceBuffer::AsBufferView(src), dst,
                                 IRect::MakeLTRB(0, 0, 1, 1), "", /*slice=*/0));
  EXPECT_TRUE(blit_pass->EncodeCommands(GetContext()->GetResourceAllocator()));
  EXPECT_TRUE(context->GetCommandQueue()->Submit({std::move(cmd_buffer)}).ok());
}
 
TEST_P(BlitPassTest, CanResizeTextures) {
  auto context = GetContext();
  auto cmd_buffer = context->CreateCommandBuffer();
  auto blit_pass = cmd_buffer->CreateBlitPass();
 
  TextureDescriptor dst_format;
  dst_format.storage_mode = StorageMode::kDevicePrivate;
  dst_format.format = PixelFormat::kR8G8B8A8UNormInt;
  dst_format.size = {10, 10};
  dst_format.usage = TextureUsage::kShaderRead | TextureUsage::kShaderWrite;
  auto dst = context->GetResourceAllocator()->CreateTexture(dst_format);
 
  TextureDescriptor src_format;
  src_format.storage_mode = StorageMode::kDevicePrivate;
  src_format.format = PixelFormat::kR8G8B8A8UNormInt;
  src_format.size = {100, 100};
  auto src = context->GetResourceAllocator()->CreateTexture(src_format);
 
  std::vector<uint8_t> bytes(src_format.GetByteSizeOfBaseMipLevel());
  for (auto i = 0u; i < src_format.GetByteSizeOfBaseMipLevel(); i += 4) {
    // RGBA
    bytes[i + 0] = 255;
    bytes[i + 1] = 0;
    bytes[i + 2] = 0;
    bytes[i + 3] = 255;
  }
  auto mapping = fml::DataMapping(bytes);
  auto staging = context->GetResourceAllocator()->CreateBufferWithCopy(mapping);
 
  ASSERT_TRUE(dst);
  ASSERT_TRUE(src);
  ASSERT_TRUE(staging);
 
  EXPECT_TRUE(blit_pass->AddCopy(DeviceBuffer::AsBufferView(staging), src));
  EXPECT_TRUE(blit_pass->ResizeTexture(src, dst));
  EXPECT_TRUE(blit_pass->EncodeCommands(GetContext()->GetResourceAllocator()));
  EXPECT_TRUE(context->GetCommandQueue()->Submit({std::move(cmd_buffer)}).ok());
}
 
}  // namespace testing
}  // namespace impeller