private Material _matSRGBConversion = null; // a shader for doing linear to sRGB conversion
protected internal override void BeginRecording(RecordingSession session)
{
if (cbSettings.renderTexture == null)
{
return; // error will have been triggered in RenderTextureInputSettings.CheckForErrors()
}
OutputHeight = cbSettings.OutputHeight;
OutputWidth = cbSettings.OutputWidth;
OutputRenderTexture = cbSettings.renderTexture;
m_needToFlipVertically = cbSettings.FlipFinalOutput; // whether or not the recorder settings have the flip box checked
var movieRecorderSettings = session.settings as MovieRecorderSettings;
if (movieRecorderSettings != null)
{
bool encoderAlreadyFlips = movieRecorderSettings.encodersRegistered[movieRecorderSettings.encoderSelected].PerformsVerticalFlip;
m_needToFlipVertically = m_needToFlipVertically ? encoderAlreadyFlips : !encoderAlreadyFlips;
}
var requiredColorSpace = ImageRecorderSettings.ColorSpaceType.sRGB_sRGB;
if (session.settings is ImageRecorderSettings)
{
requiredColorSpace = ((ImageRecorderSettings)session.settings).OutputColorSpaceComputed;
}
else if (session.settings is MovieRecorderSettings)
{
requiredColorSpace = ImageRecorderSettings.ColorSpaceType.sRGB_sRGB; // always sRGB
}
var renderTextureColorSpace = UnityHelpers.GetColorSpaceType(cbSettings.renderTexture.graphicsFormat); // the color space of the RenderTexture
var projectColorSpace = PlayerSettings.colorSpace;
// Log warnings in unsupported contexts
if (projectColorSpace == ColorSpace.Gamma)
{
if (requiredColorSpace == ImageRecorderSettings.ColorSpaceType.Unclamped_linear_sRGB)
{
Debug.LogWarning($"Gamma color space does not support linear output format. This operation is not supported.");
}
if (renderTextureColorSpace != ImageRecorderSettings.ColorSpaceType.Unclamped_linear_sRGB)
{
Debug.LogWarning($"Gamma color space does not support non-linear textures. This operation is not supported.");
}
}
// We convert from linear to sRGB if the project is linear + the source RT is linear + the output color space is sRGB
m_needToConvertLinearToSRGB = (projectColorSpace == ColorSpace.Linear && renderTextureColorSpace == ImageRecorderSettings.ColorSpaceType.Unclamped_linear_sRGB) && requiredColorSpace == ImageRecorderSettings.ColorSpaceType.sRGB_sRGB;
// We convert from sRGB to linear if the RT is sRGB (gamma) and the output color space is linear (e.g., linear EXR)
m_needToConvertSRGBToLinear = renderTextureColorSpace == ImageRecorderSettings.ColorSpaceType.sRGB_sRGB && requiredColorSpace == ImageRecorderSettings.ColorSpaceType.Unclamped_linear_sRGB;
if (m_needToFlipVertically || m_needToConvertLinearToSRGB || m_needToConvertSRGBToLinear)
{
workTexture = new RenderTexture(OutputRenderTexture);
workTexture.name = "RenderTextureInput_intermediate";
}
}
