protected override bool ProcessNode(CommandBuffer cmd)
{
if (!base.ProcessNode(cmd) || textureAsset == null)
{
return(false);
}
#if UNITY_EDITOR
var importer = UnityEditor.AssetImporter.GetAtPath(UnityEditor.AssetDatabase.GetAssetPath(textureAsset));
if (importer is UnityEditor.TextureImporter textureImporter)
{
normalMap = textureImporter.textureType == UnityEditor.TextureImporterType.NormalMap;
}
#endif
// Compressed normal maps need to be converted from AG to RG format
if (normalMap)
{
if (postProcessedTexture == null)
{
postProcessedTexture = new RenderTexture(1, 1, 0, GraphicsFormat.R16G16B16A16_SFloat);
}
if (postProcessedTexture.width != textureAsset.width || postProcessedTexture.height != textureAsset.height)
{
postProcessedTexture.Release();
postProcessedTexture.width = textureAsset.width;
postProcessedTexture.height = textureAsset.height;
postProcessedTexture.Create();
}
var blitMaterial = GetTempMaterial("Hidden/Mixture/TextureNode");
MixtureUtils.SetTextureWithDimension(blitMaterial, "_Source", textureAsset);
MixtureUtils.Blit(cmd, blitMaterial, textureAsset, postProcessedTexture);
outputTexture = postProcessedTexture;
}
else
{
postProcessedTexture?.Release();
outputTexture = textureAsset;
}
return(true);
}
protected override bool ProcessNode(CommandBuffer cmd)
{
if (!base.ProcessNode(cmd) || textureAsset == null)
{
return(false);
}
#if UNITY_EDITOR
var importer = UnityEditor.AssetImporter.GetAtPath(UnityEditor.AssetDatabase.GetAssetPath(textureAsset));
if (importer is UnityEditor.TextureImporter textureImporter)
{
normalMap = textureImporter.textureType == UnityEditor.TextureImporterType.NormalMap;
}
#endif
int targetWidth = textureAsset.width;
int targetHeight = textureAsset.height;
int targetDepth = TextureUtils.GetSliceCount(textureAsset);
bool needsTempTarget = false;
if (!IsPowerOf2(textureAsset) && POTMode != PowerOf2Mode.None)
{
int maxSize = Mathf.Max(Mathf.Max(targetWidth, targetHeight), targetDepth);
int potSize = 0;
switch (POTMode)
{
case PowerOf2Mode.ScaleToNextPowerOf2:
potSize = Mathf.NextPowerOfTwo(maxSize);
break;
default:
potSize = Mathf.ClosestPowerOfTwo(maxSize);
break;
}
targetWidth = targetHeight = targetDepth = potSize;
needsTempTarget = true;
}
if (normalMap)
{
needsTempTarget = true;
}
if (needsTempTarget && postProcessedTexture == null)
{
postProcessedTexture = new RenderTexture(1, 1, 0, GraphicsFormat.R16G16B16A16_SFloat, mipCount: textureAsset.mipmapCount)
{
dimension = textureAsset.dimension, enableRandomWrite = true, volumeDepth = 1
}
}
;
else if (!needsTempTarget)
{
postProcessedTexture?.Release();
postProcessedTexture = null;
}
if (postProcessedTexture != null && (postProcessedTexture.width != targetWidth ||
postProcessedTexture.height != targetHeight ||
postProcessedTexture.volumeDepth != targetDepth))
{
postProcessedTexture.Release();
postProcessedTexture.width = targetWidth;
postProcessedTexture.height = targetHeight;
postProcessedTexture.volumeDepth = targetDepth;
postProcessedTexture.Create();
}
// TODO: same alloc as normal map + scale and crop options
// Compressed normal maps need to be converted from AG to RG format
if (normalMap)
{
// Transform normal map texture into POT
var blitMaterial = GetTempMaterial("Hidden/Mixture/TextureNode");
MixtureUtils.SetTextureWithDimension(blitMaterial, "_Source", textureAsset);
blitMaterial.SetInt("_POTMode", (int)POTMode);
MixtureUtils.Blit(cmd, blitMaterial, textureAsset, postProcessedTexture, 0);
outputTexture = postProcessedTexture;
}
else if (needsTempTarget)
{
// Transform standard texture into POT
var blitMaterial = GetTempMaterial("Hidden/Mixture/TextureNode");
MixtureUtils.SetTextureWithDimension(blitMaterial, "_Source", textureAsset);
blitMaterial.SetInt("_POTMode", (int)POTMode);
MixtureUtils.Blit(cmd, blitMaterial, textureAsset, postProcessedTexture, 1);
outputTexture = postProcessedTexture;
}
else
{
outputTexture = textureAsset;
}
if (outputTexture != null)
{
settings.sizeMode = OutputSizeMode.Absolute;
settings.width = outputTexture.width;
settings.height = outputTexture.height;
settings.depth = TextureUtils.GetSliceCount(outputTexture);
}
return(true);
}