private bool AddTexture(Texture tex, TextureReferences reference)
{
var meta = EnsureTexture(tex);
if (meta == null)
{
return(false);
}
return(meta.References.Add(reference));
}
private void TransformDiffuse(AssetContext asset, Texture texture, TextureReferences reference)
{
var diffuse = texture as Texture2D;
EnsureReadableTexture(diffuse);
var specularGlossiness = reference.SmoothnessSource as Texture2D;
EnsureReadableTexture(specularGlossiness);
var metallicRoughMapName = GetTextureOutputName(asset.UrhoAssetName, reference);
using (var fileStream = asset.DestinationFolder.Create(metallicRoughMapName))
{
if (fileStream != null)
{
var tmpTexture = CreateTargetTexture(diffuse, specularGlossiness);
var specularColors = new PixelSource(specularGlossiness, tmpTexture.width, tmpTexture.height,
Color.black);
var diffuseColors = new PixelSource(diffuse, tmpTexture.width, tmpTexture.height, Color.white);
var smoothnessSource =
reference.SmoothnessTextureChannel == SmoothnessTextureChannel.MetallicOrSpecularAlpha
? specularColors
: diffuseColors;
var pixels = new Color32[tmpTexture.width * tmpTexture.height];
var index = 0;
for (var y = 0; y < tmpTexture.height; ++y)
{
for (var x = 0; x < tmpTexture.width; ++x)
{
var diffuseColor = diffuseColors.GetAt(x, y);
var mr = PBRUtils.ConvertToMetallicRoughness(new PBRUtils.SpecularGlossiness
{
diffuse = diffuseColor,
specular = specularColors.GetAt(x, y),
glossiness = smoothnessSource.GetAt(x, y).a,
opacity = diffuseColor.a
});
pixels[index] = new Color(mr.baseColor.r, mr.baseColor.g, mr.baseColor.b, mr.opacity);
++index;
}
}
tmpTexture.SetPixels32(pixels, 0);
var bytes = tmpTexture.EncodeToPNG();
fileStream.Write(bytes, 0, bytes.Length);
}
}
}
public static string GetTextureOutputName(string baseAssetName, TextureReferences reference)
{
switch (reference.Semantic)
{
case TextureSemantic.PBRMetallicGlossiness:
return(ReplaceExtension(baseAssetName, ".MetallicRoughness.png"));
case TextureSemantic.PBRSpecularGlossiness:
return(ReplaceExtension(baseAssetName, ".MetallicRoughness.png"));
case TextureSemantic.PBRDiffuse:
return(ReplaceExtension(baseAssetName, ".BaseColor.png"));
default: return(baseAssetName);
}
}
private void TransformDiffuse(AssetContext asset, Texture texture, TextureReferences reference)
{
var diffuse = texture as Texture2D;
EnsureReadableTexture(diffuse);
var specularGlossiness = reference.SmoothnessSource as Texture2D;
EnsureReadableTexture(specularGlossiness);
var metallicRoughMapName = GetTextureOutputName(asset.UrhoAssetName, reference);
using (var fileStream = asset.DestinationFolder.Create(metallicRoughMapName))
{
if (fileStream != null)
{
var specWidth = specularGlossiness?.width ?? 1;
var specHeight = specularGlossiness?.height ?? 1;
var smoothnessColors = specularGlossiness?.GetPixels32(0) ?? new[] { new Color32(0, 0, 0, 255) };
var width = Math.Max(diffuse.width, specWidth);
var height = Math.Max(diffuse.height, specHeight);
var tmpTexture = new Texture2D(width, height, TextureFormat.RGBA32, false);
tmpTexture.hideFlags = HideFlags.HideAndDontSave;
var diffuseColors = diffuse.GetPixels32(0);
var pixels = new Color32[width * height];
var index = 0;
for (var y = 0; y < height; ++y)
{
for (var x = 0; x < width; ++x)
{
var specular = Get(smoothnessColors, specWidth, specHeight, x, y, width, height);
var diffuseColor = Get(diffuseColors, diffuse.width, diffuse.height, x, y, width, height);
pixels[index] = new Color(diffuseColor.r + specular.r, diffuseColor.g + specular.g,
diffuseColor.b + specular.b, diffuseColor.a);
++index;
}
}
tmpTexture.SetPixels32(pixels, 0);
var bytes = tmpTexture.EncodeToPNG();
fileStream.Write(bytes, 0, bytes.Length);
}
}
}
private void TransformSpecularGlossiness(AssetContext asset, Texture texture, TextureReferences reference)
{
var specularGloss = texture as Texture2D;
EnsureReadableTexture(specularGloss);
var diffuse = reference.SmoothnessSource as Texture2D;
EnsureReadableTexture(diffuse);
var smoothnessSource =
reference.SmoothnessTextureChannel == SmoothnessTextureChannel.MetallicOrSpecularAlpha
? specularGloss
: diffuse;
var metallicRoughMapName = GetTextureOutputName(asset.UrhoAssetName, reference);
using (var fileStream = asset.DestinationFolder.Create(metallicRoughMapName))
{
if (fileStream != null)
{
var width = Math.Max(specularGloss.width, smoothnessSource.width);
var height = Math.Max(specularGloss.height, smoothnessSource.height);
var tmpTexture = new Texture2D(width, height, TextureFormat.RGBA32, false);
tmpTexture.hideFlags = HideFlags.HideAndDontSave;
var metallicColors = specularGloss.GetPixels32(0);
var diffuseColors = diffuse.GetPixels32(0);
var smoothnessColors = specularGloss == smoothnessSource
? metallicColors
: smoothnessSource.GetPixels32(0);
var pixels = new Color32[width * height];
var index = 0;
for (var y = 0; y < height; ++y)
{
for (var x = 0; x < width; ++x)
{
var r = 1.0f - Get(smoothnessColors, smoothnessSource.width, smoothnessSource.height, x, y,
width, height).a;
var d = GetLuminance(Get(diffuseColors, diffuse.width, diffuse.height, x, y, width, height));
var s = GetLuminance(Get(metallicColors, specularGloss.width, specularGloss.height, x, y, width,
height));
var m = s / (d + s);
pixels[index] = new Color(r, m, 0, 1);
++index;
}
}
tmpTexture.SetPixels32(pixels, 0);
var bytes = tmpTexture.EncodeToPNG();
fileStream.Write(bytes, 0, bytes.Length);
}
}
}
private void ExportSpecularGlossiness(AssetContext asset, SpecularGlossinessShaderArguments arguments)
{
using (var writer = asset.DestinationFolder.CreateXml(asset.UrhoAssetName))
{
if (writer == null)
{
return;
}
writer.WriteStartDocument();
writer.WriteWhitespace(Environment.NewLine);
writer.WriteStartElement("material");
writer.WriteWhitespace(Environment.NewLine);
if (arguments.Diffuse != null)
{
// Albedo
if (arguments.PBRSpecular != null)
{
// Albedo, MetallicGloss
if (arguments.Bump != null)
{
// Albedo, MetallicGloss, Normal
if (arguments.Emission)
{
// Albedo, MetallicGloss, Normal, Emission
if (arguments.Transparent)
{
WriteTechnique(writer,
"Techniques/PBR/PBRMetallicRoughDiffNormalSpecEmissiveAlpha.xml");
}
else
{
WriteTechnique(writer, "Techniques/PBR/PBRMetallicRoughDiffNormalSpecEmissive.xml");
}
WriteTexture(arguments.Emission, writer, "emissive");
}
else
{
// Albedo, MetallicGloss, Normal, No Emission
if (arguments.Transparent)
{
WriteTechnique(writer, "Techniques/PBR/PBRMetallicRoughDiffNormalSpecAlpha.xml");
}
else
{
WriteTechnique(writer, "Techniques/PBR/PBRMetallicRoughDiffNormalSpec.xml");
}
}
WriteTexture(arguments.Bump, writer, "normal");
}
else
{
// Albedo, MetallicGloss, No Normal
if (arguments.Transparent)
{
WriteTechnique(writer, "Techniques/PBR/PBRMetallicRoughDiffSpecAlpha.xml");
}
else
{
WriteTechnique(writer, "Techniques/PBR/PBRMetallicRoughDiffSpec.xml");
}
}
if (_assets.TryGetTexturePath(arguments.PBRSpecular, out var baseAssetName))
{
var textureReferences = new TextureReferences(TextureSemantic.PBRSpecularGlossiness, 1.0f,
arguments.SmoothnessTextureChannel == SmoothnessTextureChannel.AlbedoAlpha
? arguments.Diffuse
: arguments.PBRSpecular, arguments.SmoothnessTextureChannel);
var textureOutputName =
TextureExporter.GetTextureOutputName(baseAssetName, textureReferences);
WriteTexture(textureOutputName, writer, "specular");
}
}
else
{
// Albedo, No MetallicGloss
if (arguments.Bump != null)
{
// Albedo, No MetallicGloss, Normal
if (arguments.Emission != null)
{
// Albedo, No MetallicGloss, Normal, Emission
if (arguments.Transparent)
{
WriteTechnique(writer, "Techniques/PBR/PBRDiffNormalEmissiveAlpha.xml");
}
else
{
WriteTechnique(writer, "Techniques/PBR/PBRDiffNormalEmissive.xml");
}
WriteTexture(arguments.Emission, writer, "emissive");
}
else
{
// Albedo, No MetallicGloss, Normal, No Emission
if (arguments.Transparent)
{
WriteTechnique(writer, "Techniques/PBR/PBRDiffNormalAlpha.xml");
}
else
{
WriteTechnique(writer, "Techniques/PBR/PBRDiffNormal.xml");
}
}
WriteTexture(arguments.Bump, writer, "normal");
}
else
{
// Albedo, No MetallicGloss, No Normal
if (arguments.Transparent)
{
WriteTechnique(writer, "Techniques/PBR/PBRDiffAlpha.xml");
}
else
{
WriteTechnique(writer, "Techniques/PBR/PBRDiff.xml");
}
}
}
if (_assets.TryGetTexturePath(arguments.Diffuse, out var diffuseName))
{
var textureReferences = new TextureReferences(TextureSemantic.PBRDiffuse, 1.0f,
arguments.PBRSpecular, arguments.SmoothnessTextureChannel);
var textureOutputName = TextureExporter.GetTextureOutputName(diffuseName, textureReferences);
WriteTexture(textureOutputName, writer, "diffuse");
}
}
else
{
// No albedo
if (arguments.Transparent)
{
WriteTechnique(writer, "Techniques/PBR/PBRNoTextureAlpha.xml");
}
else
{
WriteTechnique(writer, "Techniques/PBR/PBRNoTexture.xml");
}
}
WriteParameter(writer, "MatDiffColor", BaseNodeExporter.Format(arguments.DiffuseColor));
if (arguments.HasEmission)
{
WriteParameter(writer, "MatEmissiveColor", BaseNodeExporter.FormatRGB(arguments.EmissiveColor));
}
WriteParameter(writer, "MatEnvMapColor", BaseNodeExporter.FormatRGB(Color.white));
WriteParameter(writer, "MatSpecColor", BaseNodeExporter.Format(Vector4.zero));
if (arguments.PBRSpecular != null)
{
WriteParameter(writer, "Roughness", BaseNodeExporter.Format(0));
WriteParameter(writer, "Metallic", BaseNodeExporter.Format(0));
}
else
{
////TODO: Evaluate correct parameters:
WriteParameter(writer, "Roughness", BaseNodeExporter.Format(0.0f));
WriteParameter(writer, "Metallic", BaseNodeExporter.Format(0.0f));
}
writer.WriteEndElement();
writer.WriteEndDocument();
}
}
private void TransformMetallicGlossiness(AssetContext asset, Texture texture, TextureReferences reference)
{
var metallicGloss = texture as Texture2D;
EnsureReadableTexture(metallicGloss);
var smoothnessSource = reference.SmoothnessSource as Texture2D;
EnsureReadableTexture(smoothnessSource);
var metallicRoughMapName = GetTextureOutputName(asset.UrhoAssetName, reference);
using (var fileStream = asset.DestinationFolder.Create(metallicRoughMapName))
{
if (fileStream != null)
{
var tmpTexture = CreateTargetTexture(metallicGloss, reference.SmoothnessSource as Texture2D);
var metallicColors = new PixelSource(metallicGloss, tmpTexture.width, tmpTexture.height,
new Color(0, 0, 0, 0));
var smoothnessColors = metallicGloss == smoothnessSource
? metallicColors
: new PixelSource(smoothnessSource, tmpTexture.width, tmpTexture.height, new Color(0, 0, 0, 0));
var pixels = new Color32[tmpTexture.width * tmpTexture.height];
var index = 0;
for (var y = 0; y < tmpTexture.height; ++y)
{
for (var x = 0; x < tmpTexture.width; ++x)
{
var r = 1.0f - smoothnessColors.GetAt(x, y).a;
var m = metallicColors.GetAt(x, y).r;
pixels[index] = new Color(r, m, 0, 1);
++index;
}
}
tmpTexture.SetPixels32(pixels, 0);
var bytes = tmpTexture.EncodeToPNG();
fileStream.Write(bytes, 0, bytes.Length);
}
}
}
