Function CompareWithBitmap

trinityal/tests/WithValidRenderContextFixture.cpp:186–229

}

::testing::AssertionResult CompareWithBitmap( const char* filePath, Tr2TextureAL& rt, Tr2RenderContextAL& renderContext )
{
	uint32_t width, height;
	std::unique_ptr<uint8_t[]> data;
	auto loaded = LoadDDS( filePath, width, height, data );
	if( !loaded )
	{
		return ::testing::AssertionSuccess();
	}

	if( width != rt.GetWidth() )
	{
		return ::testing::AssertionFailure() << "width or DDS image " << width << " is not equal to back buffer width " << rt.GetWidth();
	}
	if( height != rt.GetHeight() )
	{
		return ::testing::AssertionFailure() << "height or DDS image " << height << " is not equal to back buffer height " << rt.GetHeight();
	}

	const void* rtData;
	uint32_t rtPitch;
	auto hr = rt.MapForReading( Tr2TextureSubresource( 0 ), rtData, rtPitch, renderContext );
	if( FAILED( hr ) )
	{
		return ::testing::AssertionFailure() << "failed to map render target, HR=" << hr.GetResult();
	}
	ON_BLOCK_EXIT( [&] { rt.UnmapForReading( renderContext ); } );

	const uint8_t* rtRow = static_cast<const uint8_t*>( rtData );
	//const uint8_t* flRow = data.get();
	for( uint32_t i = 0; i < rt.GetHeight(); ++i )
	{
		for( uint32_t j = 0; j < width; ++j )
		{
			if( rtRow[j * 4] != rtRow[j * 4] || rtRow[j * 4 + 1] != rtRow[j * 4 + 1] || rtRow[j * 4 + 2] != rtRow[j * 4 + 2] )
			{
				return ::testing::AssertionFailure() << "pixel values in expected DDS and back buffer are different at (" << j << ", " << i << ") pixel";
			}
		}
		rtRow += rtPitch;
		//flRow += 4 * width;
	}
	return ::testing::AssertionSuccess();
}

Tr2TextureAL GetReadableBackBuffer( Tr2PrimaryRenderContextAL& renderContext )
{