ezTestAppRun ezRendererTestBasics::SubtestClearScreen()
{
BeginFrame();
switch (m_iFrame)
{
case 0:
ClearScreen(ezColor(1, 0, 0));
break;
case 1:
ClearScreen(ezColor(0, 1, 0));
break;
case 2:
ClearScreen(ezColor(0, 0, 1));
break;
case 3:
ClearScreen(ezColor(0.5f, 0.5f, 0.5f, 0.5f));
break;
}
EZ_TEST_IMAGE(m_iFrame, 1);
EndFrame();
return m_iFrame < 3 ? ezTestAppRun::Continue : ezTestAppRun::Quit;
}
virtual ezTestAppRun RunSubTest(ezInt32 iIdentifier, ezUInt32 uiInvocationCount) override
{
ezImageFormat::Enum format = static_cast<ezImageFormat::Enum>(iIdentifier);
bool isDecodable = ezImageConversion::IsConvertible(format, defaultFormat);
if (!isDecodable)
{
EZ_TEST_BOOL_MSG(false, "Format %s can be encoded from %s but not decoded - add a decoder for this format please",
ezImageFormat::GetName(format), ezImageFormat::GetName(defaultFormat));
return ezTestAppRun::Quit;
}
{
ezHybridArray<ezImageConversion::ConversionPathNode, 16> decodingPath;
ezUInt32 decodingPathScratchBuffers;
ezImageConversion::BuildPath(format, defaultFormat, false, decodingPath, decodingPathScratchBuffers);
// the [test] tag tells the test framework to output the log message in the GUI
ezLog::Info("[test]Default decoding Path:");
for (ezUInt32 i = 0; i < decodingPath.GetCount(); ++i)
{
ezLog::Info("[test] {} -> {}", ezImageFormat::GetName(decodingPath[i].m_sourceFormat),
ezImageFormat::GetName(decodingPath[i].m_targetFormat));
}
}
{
ezHybridArray<ezImageConversion::ConversionPathNode, 16> encodingPath;
ezUInt32 encodingPathScratchBuffers;
ezImageConversion::BuildPath(defaultFormat, format, false, encodingPath, encodingPathScratchBuffers);
// the [test] tag tells the test framework to output the log message in the GUI
ezLog::Info("[test]Default encoding Path:");
for (ezUInt32 i = 0; i < encodingPath.GetCount(); ++i)
{
ezLog::Info("[test] {} -> {}", ezImageFormat::GetName(encodingPath[i].m_sourceFormat),
ezImageFormat::GetName(encodingPath[i].m_targetFormat));
}
}
// Test LDR: Load, encode to target format, then do image comparison (which internally decodes to BGR8_UNORM again).
// This visualizes quantization for low bit formats, block compression artifacts, or whether formats have fewer than 3 channels.
{
EZ_TEST_BOOL(m_image.LoadFrom("ImageConversions/reference.png").Succeeded());
EZ_TEST_BOOL(m_image.Convert(format).Succeeded());
EZ_TEST_IMAGE(iIdentifier * 2, ezImageFormat::IsCompressed(format) ? 10 : 0);
}
// Test HDR: Load, decode to FLOAT32, stretch to [-range, range] and encode;
// then decode to FLOAT32 again, bring back into LDR range and do image comparison.
// If the format doesn't support negative values, the left half of the image will be black.
// If the format doesn't support values with absolute value > 1, the image will appear clipped to fullbright.
// Also, fill the first few rows in the top left with Infinity, -Infinity, and NaN, which should
// show up as White, White, and Black, resp., in the comparison.
{
const float range = 8;
EZ_TEST_BOOL(m_image.LoadFrom("ImageConversions/reference.png").Succeeded());
EZ_TEST_BOOL(m_image.Convert(ezImageFormat::R32G32B32A32_FLOAT).Succeeded());
float posInf = +ezMath::BasicType<float>::GetInfinity();
float negInf = -ezMath::BasicType<float>::GetInfinity();
float NaN = ezMath::BasicType<float>::GetNaN();
for (ezUInt32 y = 0; y < m_image.GetHeight(); ++y)
{
ezColor* pPixelPointer = m_image.GetPixelPointer<ezColor>(0, 0, 0, 0, y);
for (ezUInt32 x = 0; x < m_image.GetWidth(); ++x)
{
// Fill with Inf or Nan resp. scale the image into positive and negative HDR range
if (x < 30 && y < 10)
{
*pPixelPointer = ezColor(posInf, posInf, posInf, posInf);
}
else if (x < 30 && y < 20)
{
*pPixelPointer = ezColor(negInf, negInf, negInf, negInf);
}
else if (x < 30 && y < 30)
{
*pPixelPointer = ezColor(NaN, NaN, NaN, NaN);
}
else
{
float scale = (x / float(m_image.GetWidth()) - 0.5f) * 2.0f * range;
if (ezMath::Abs(scale) > 0.5)
{
*pPixelPointer *= scale;
}
}
pPixelPointer++;
}
}
EZ_TEST_BOOL(m_image.Convert(format).Succeeded());
EZ_TEST_BOOL(m_image.Convert(ezImageFormat::R32G32B32A32_FLOAT).Succeeded());
for (ezUInt32 y = 0; y < m_image.GetHeight(); ++y)
{
ezColor* pPixelPointer = m_image.GetPixelPointer<ezColor>(0, 0, 0, 0, y);
for (ezUInt32 x = 0; x < m_image.GetWidth(); ++x)
{
// Scale the image back into LDR range if possible
if (x < 30 && y < 10)
{
// Leave pos inf as is - this should be clipped to 1 in the LDR conversion for img cmp
}
else if (x < 30 && y < 20)
{
// Flip neg inf to pos inf
*pPixelPointer *= -1.0f;
}
else if (x < 30 && y < 30)
{
// Leave nan as is - this should be clipped to 0 in the LDR conversion for img cmp
}
else
{
float scale = (x / float(m_image.GetWidth()) - 0.5f) * 2.0f * range;
if (ezMath::Abs(scale) > 0.5)
{
*pPixelPointer /= scale;
}
}
pPixelPointer++;
}
}
EZ_TEST_IMAGE(iIdentifier * 2 + 1, ezImageFormat::IsCompressed(format) ? 10 : 0);
}
return ezTestAppRun::Quit;
}
