Texture ConvolveProbeTexture(CommandBuffer cmd, Texture texture, out Vector4 sourceScaleOffset)
{
// Probes can be either Cubemaps (for baked probes) or RenderTextures (for realtime probes)
Texture2D texture2D = texture as Texture2D;
RenderTexture renderTexture = texture as RenderTexture;
RenderTexture convolutionSourceTexture = null;
// Disabled code path because planar reflection probe baking is currently disabled
if (texture2D != null && false)
{
// if the size if different from the cache probe size or if the input texture format is compressed, we need to convert it
// 1) to a format for which we can generate mip maps
// 2) to the proper reflection probe cache size
var sizeMismatch = texture2D.width != m_ProbeSize || texture2D.height != m_ProbeSize;
var formatMismatch = texture2D.format != TextureFormat.RGBAHalf; // Temporary RT for convolution is always FP16
if (formatMismatch || sizeMismatch)
{
if (sizeMismatch)
{
Debug.LogWarningFormat("Baked Planar Reflection Probe {0} does not match HDRP Planar Reflection Probe Cache size of {1}. Consider baking it at the same size for better loading performance.", texture.name, m_ProbeSize);
}
else if (texture2D.format == TextureFormat.BC6H)
{
Debug.LogWarningFormat("Baked Planar Reflection Probe {0} is compressed but the HDRP Planar Reflection Probe Cache is not. Consider removing compression from the input texture for better quality.", texture.name);
}
ConvertTexture(cmd, texture2D, m_TempRenderTexture);
}
else
{
cmd.CopyTexture(texture2D, 0, 0, m_TempRenderTexture, 0, 0);
}
convolutionSourceTexture = m_TempRenderTexture;
}
else
{
Debug.Assert(renderTexture != null);
if (renderTexture.dimension != TextureDimension.Tex2D)
{
Debug.LogError("Planar Realtime reflection probe should always be a 2D RenderTexture.");
sourceScaleOffset = Vector4.zero;
return(null);
}
convolutionSourceTexture = renderTexture;
}
float scaleX = (float)texture.width / m_ConvolutionTargetTexture.width;
float scaleY = (float)texture.height / m_ConvolutionTargetTexture.height;
sourceScaleOffset = new Vector4(scaleX, scaleY, 0, 0);
m_IBLFilterGGX.FilterPlanarTexture(cmd, convolutionSourceTexture, m_ConvolutionTargetTexture);
return(m_ConvolutionTargetTexture);
}
Texture ConvolveProbeTexture(CommandBuffer cmd, Texture texture, ref IBLFilterBSDF.PlanarTextureFilteringParameters planarTextureFilteringParameters, out Vector4 sourceScaleOffset)
{
Texture2D texture2D = texture as Texture2D;
RenderTexture renderTexture = texture as RenderTexture;
if (renderTexture.dimension != TextureDimension.Tex2D)
{
Debug.LogError("Planar Realtime reflection probe should always be a 2D RenderTexture.");
sourceScaleOffset = Vector4.zero;
return(null);
}
float scaleX = (float)texture.width / m_ConvolutionTargetTexture.width;
float scaleY = (float)texture.height / m_ConvolutionTargetTexture.height;
sourceScaleOffset = new Vector4(scaleX, scaleY, 0, 0);
m_IBLFilterGGX.FilterPlanarTexture(cmd, renderTexture, ref planarTextureFilteringParameters, m_ConvolutionTargetTexture);
return(m_ConvolutionTargetTexture);
}
Texture ConvolveProbeTexture(CommandBuffer cmd, Texture texture)
{
// Probes can be either Cubemaps (for baked probes) or RenderTextures (for realtime probes)
Texture2D texture2D = texture as Texture2D;
RenderTexture renderTexture = texture as RenderTexture;
RenderTexture convolutionSourceTexture = null;
if (texture2D != null)
{
// if the size if different from the cache probe size or if the input texture format is compressed, we need to convert it
// 1) to a format for which we can generate mip maps
// 2) to the proper reflection probe cache size
var sizeMismatch = texture2D.width != m_ProbeSize || texture2D.height != m_ProbeSize;
var formatMismatch = texture2D.format != TextureFormat.RGBAHalf; // Temporary RT for convolution is always FP16
if (formatMismatch || sizeMismatch)
{
if (sizeMismatch)
{
Debug.LogWarningFormat("Baked Planar Reflection Probe {0} does not match HDRP Planar Reflection Probe Cache size of {1}. Consider baking it at the same size for better loading performance.", texture.name, m_ProbeSize);
}
else if (texture2D.format == TextureFormat.BC6H)
{
Debug.LogWarningFormat("Baked Planar Reflection Probe {0} is compressed but the HDRP Planar Reflection Probe Cache is not. Consider removing compression from the input texture for better quality.", texture.name);
}
ConvertTexture(cmd, texture2D, m_TempRenderTexture);
}
else
{
cmd.CopyTexture(texture2D, 0, 0, m_TempRenderTexture, 0, 0);
}
// Ideally if input is not compressed and has mipmaps, don't do anything here. Problem is, we can't know if mips have been already convolved offline...
cmd.GenerateMips(m_TempRenderTexture);
convolutionSourceTexture = m_TempRenderTexture;
}
else
{
Debug.Assert(renderTexture != null);
if (renderTexture.dimension != TextureDimension.Tex2D)
{
Debug.LogError("Planar Realtime reflection probe should always be a 2D RenderTexture.");
return(null);
}
// TODO: Do a different case for downsizing, in this case, instead of doing ConvertTexture just use the relevant mipmaps.
var sizeMismatch = renderTexture.width != m_ProbeSize || renderTexture.height != m_ProbeSize;
if (sizeMismatch)
{
ConvertTexture(cmd, renderTexture, m_TempRenderTexture);
convolutionSourceTexture = m_TempRenderTexture;
}
else
{
convolutionSourceTexture = renderTexture;
}
// Generate unfiltered mipmaps as a base for convolution
// TODO: Make sure that we don't first convolve everything on the GPU with the legacy code path executed after rendering the probe.
cmd.GenerateMips(convolutionSourceTexture);
}
m_IBLFilterGGX.FilterPlanarTexture(cmd, convolutionSourceTexture, m_ConvolutionTargetTexture);
return(m_ConvolutionTargetTexture);
}
