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Added unit test for single pixel and pixel regions API usage

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Signed-off-by: Chris Galvan <chgalvan@amazon.com>
This commit is contained in:
Chris Galvan
2022-01-25 10:22:39 -06:00
parent f3120ca780
commit efd2e41b05
1 changed files with 40 additions and 3 deletions
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Gems/Atom/RPI/Code/Tests/Image/StreamingImageTests.cpp
+40 -3
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@@ -433,12 +433,12 @@ namespace UnitTest
return poolAsset;
}
AZ::Data::Asset<AZ::RPI::StreamingImageAsset> BuildTestImage()
AZ::Data::Asset<AZ::RPI::StreamingImageAsset> BuildTestImage(AZ::RHI::Format format = AZ::RHI::Format::R8G8B8A8_UNORM)
{
using namespace AZ;
const uint32_t arraySize = 2;
const uint32_t pixelSize = 4;
const uint32_t pixelSize = RHI::GetFormatSize(format);
const uint32_t mipCountHead = 1;
const uint32_t mipCountMiddle = 2;
const uint32_t mipCountTail = 3;
@@ -453,7 +453,7 @@ namespace UnitTest
RPI::StreamingImageAssetCreator assetCreator;
assetCreator.Begin(Data::AssetId(Uuid::CreateRandom()));
RHI::ImageDescriptor imageDesc = RHI::ImageDescriptor::Create2DArray(RHI::ImageBindFlags::ShaderRead, imageWidth, imageHeight, arraySize, RHI::Format::R8G8B8A8_UNORM);
RHI::ImageDescriptor imageDesc = RHI::ImageDescriptor::Create2DArray(RHI::ImageBindFlags::ShaderRead, imageWidth, imageHeight, arraySize, format);
imageDesc.m_mipLevels = static_cast<uint16_t>(mipCountTotal);
assetCreator.SetImageDescriptor(imageDesc);
@@ -726,4 +726,41 @@ namespace UnitTest
RPI::ImageSystemInterface::Get()->Update();
}
TEST_F(StreamingImageTests, GetSubImagePixelValues)
{
using namespace AZ;
Data::Asset<RPI::StreamingImageAsset> imageAsset = BuildTestImage(AZ::RHI::Format::R8_UNORM);
auto streamingImageAsset = imageAsset.Get();
EXPECT_NE(streamingImageAsset, nullptr);
// Validate retrieving one pixel at a time
auto size = streamingImageAsset->GetImageDescriptor().m_size;
for (uint32_t y = 0; y < size.m_height; ++y)
{
for (uint32_t x = 0; x < size.m_width; ++x)
{
auto pixelDataValue = imageAsset->GetSubImagePixelValue<float>(x, y);
auto pixelExpectedValue = static_cast<uint8_t>(y * size.m_width + x) / static_cast<float>(std::numeric_limits<AZ::u8>::max());
EXPECT_TRUE(AZ::IsClose(pixelDataValue, pixelExpectedValue));
}
}
// Validate retrieving a region of pixels
AZStd::vector<float> pixelValues(size.m_width * size.m_height);
auto topLeft = AZStd::make_pair<uint32_t, uint32_t>(0, 0);
auto bottomRight = AZStd::make_pair<uint32_t, uint32_t>(size.m_width - 1, size.m_height - 1);
AZStd::span<float> valueSpan(pixelValues.begin(), pixelValues.size());
streamingImageAsset->GetSubImagePixelValues(topLeft, bottomRight, valueSpan);
for (uint32_t index = 0; index < pixelValues.size(); ++index)
{
auto pixelDataValue = valueSpan[index];
auto pixelExpectedValue = static_cast<uint8_t>(index) / static_cast<float>(std::numeric_limits<AZ::u8>::max());
EXPECT_TRUE(AZ::IsClose(pixelDataValue, pixelExpectedValue));
}
}
}