/// <summary>
/// sRGBなテクスチャーを処理し、index を確定させる
/// </summary>
/// <param name="src"></param>
/// <returns></returns>
public int ExportSRGB(Texture src)
{
if (src == null)
{
return(-1);
}
// cache
if (m_exportMap.TryGetValue(new ExportKey(src, ConvertTypes.None), out var index))
{
return(index);
}
// get Texture2D
index = Exported.Count;
var texture2D = src as Texture2D;
if (m_useAsset(texture2D))
{
// do nothing
}
else
{
texture2D = TextureConverter.CopyTexture(src, TextureImportTypes.sRGB, null);
}
Exported.Add(texture2D);
m_exportMap.Add(new ExportKey(src, ConvertTypes.None), index);
return(index);
}
/// <summary>
/// Import glTF Metallic-Roughness texture to Unity Metallic-Smoothness-Occlusion texture.
///
/// isLegacySquaredRoughness:
/// Before UniGLTF v0.69, roughness value in the texture was invalid squared value.
/// </summary>
public static Texture2D Import(Texture2D metallicRoughnessTexture,
float metallicFactor, float roughnessFactor, Texture2D occlusionTexture, bool isLegacySquaredRoughness)
{
if (metallicRoughnessTexture == null && occlusionTexture == null)
{
throw new ArgumentNullException("no texture");
}
var src = metallicRoughnessTexture != null ? metallicRoughnessTexture : occlusionTexture;
Importer.mainTexture = src;
Importer.SetTexture("_GltfMetallicRoughnessTexture", metallicRoughnessTexture);
Importer.SetTexture("_GltfOcclusionTexture", occlusionTexture);
Importer.SetFloat("_GltfMetallicFactor", metallicFactor);
Importer.SetFloat("_GltfRoughnessFactor", roughnessFactor);
Importer.SetFloat("_IsLegacySquaredRoughness", isLegacySquaredRoughness ? 1 : 0);
var dst = TextureConverter.CopyTexture(src, ColorSpace.Linear, true, Importer);
Importer.mainTexture = null;
Importer.SetTexture("_GltfMetallicRoughnessTexture", null);
Importer.SetTexture("_GltfOcclusionTexture", null);
Importer.SetFloat("_GltfMetallicFactor", 0);
Importer.SetFloat("_GltfRoughnessFactor", 0);
Importer.SetFloat("_IsLegacySquaredRoughness", 0);
return(dst);
}
/// <summary>
/// 画像のバイト列を得る
/// </summary>
/// <param name="bytes"></param>
/// <param name="texture"></param>
/// <returns></returns>
public static (byte[] bytes, string mime) GetTextureBytesWithMime(Texture2D texture)
{
try
{
var png = texture.EncodeToPNG();
if (png != null)
{
return(png, "image/png");
}
}
catch (Exception ex)
{
// fail to EncodeToPng
// System.ArgumentException: not readable, the texture memory can not be accessed from scripts. You can make the texture readable in the Texture Import Settings.
Debug.LogWarning(ex);
}
{
// try copy and EncodeToPng
var copy = TextureConverter.CopyTexture(texture, TextureImportTypes.sRGB, null);
var png = copy.EncodeToPNG();
UnityEngine.Object.DestroyImmediate(copy);
return(png, "image/png");
}
}
public static Texture2D Export(Texture metallicSmoothTexture, float smoothness, Texture occlusionTexture)
{
// TODO: Replace with Shader implementation
if (metallicSmoothTexture != null && occlusionTexture != null)
{
if (metallicSmoothTexture == occlusionTexture)
{
var dst = TextureConverter.CreateEmptyTextureWithSettings(metallicSmoothTexture, ColorSpace.Linear, false);
var linearTexture = TextureConverter.CopyTexture(metallicSmoothTexture, ColorSpace.Linear, true, null);
dst.SetPixels32(linearTexture.GetPixels32().Select(x => ExportPixel(x, smoothness, x)).ToArray());
dst.Apply();
dst.name = metallicSmoothTexture.name;
DestroyTexture(linearTexture);
return(dst);
}
else
{
var dst = TextureConverter.CreateEmptyTextureWithSettings(metallicSmoothTexture, ColorSpace.Linear, false);
var linearMetallicSmooth = TextureConverter.CopyTexture(metallicSmoothTexture, ColorSpace.Linear, true, null);
var metallicSmoothPixels = linearMetallicSmooth.GetPixels32();
var linearOcclusion = TextureConverter.CopyTexture(occlusionTexture, ColorSpace.Linear, false, null);
var occlusionPixels = linearOcclusion.GetPixels32();
if (metallicSmoothPixels.Length != occlusionPixels.Length)
{
throw new NotImplementedException();
}
for (int i = 0; i < metallicSmoothPixels.Length; ++i)
{
metallicSmoothPixels[i] = ExportPixel(metallicSmoothPixels[i], smoothness, occlusionPixels[i]);
}
dst.SetPixels32(metallicSmoothPixels);
dst.Apply();
dst.name = metallicSmoothTexture.name;
DestroyTexture(linearMetallicSmooth);
DestroyTexture(linearOcclusion);
return(dst);
}
}
else if (metallicSmoothTexture)
{
var dst = TextureConverter.CreateEmptyTextureWithSettings(metallicSmoothTexture, ColorSpace.Linear, false);
var linearMetallicSmooth = TextureConverter.CopyTexture(metallicSmoothTexture, ColorSpace.Linear, true, null);
dst.SetPixels32(linearMetallicSmooth.GetPixels32().Select(x => ExportPixel(x, smoothness, default)).ToArray());
dst.Apply();
dst.name = metallicSmoothTexture.name;
DestroyTexture(linearMetallicSmooth);
return(dst);
}
else if (occlusionTexture)
{
var dst = TextureConverter.CreateEmptyTextureWithSettings(occlusionTexture, ColorSpace.Linear, false);
var linearOcclusion = TextureConverter.CopyTexture(occlusionTexture, ColorSpace.Linear, false, null);
dst.SetPixels32(linearOcclusion.GetPixels32().Select(x => ExportPixel(default, smoothness, x)).ToArray());
public void CopyFromNonReadableSRgbDds()
{
var compressedTex = AssetDatabase.LoadAssetAtPath <Texture2D>($"{AssetPath}/4x4_non_readable_compressed.dds");
Assert.False(compressedTex.isReadable);
var copiedTex = TextureConverter.CopyTexture(compressedTex, ColorSpace.sRGB, true, null);
var pixels = copiedTex.GetPixels32(miplevel: 0);
Assert.AreEqual(pixels.Length, DdsTextureValues.Length);
for (var idx = 0; idx < pixels.Length; ++idx)
{
Assert.AreEqual(DdsTextureValues[idx], pixels[idx]);
}
}
public static Texture2D Import(Texture2D metallicRoughnessTexture,
float metallicFactor, float roughnessFactor, Texture2D occlusionTexture)
{
if (metallicRoughnessTexture != null && occlusionTexture != null)
{
if (metallicRoughnessTexture == occlusionTexture)
{
var copyMetallicRoughness = TextureConverter.CopyTexture(metallicRoughnessTexture, ColorSpace.Linear, null);
var metallicRoughnessPixels = copyMetallicRoughness.GetPixels32();
for (int i = 0; i < metallicRoughnessPixels.Length; ++i)
{
metallicRoughnessPixels[i] = ImportPixel(metallicRoughnessPixels[i], metallicFactor, roughnessFactor, metallicRoughnessPixels[i]);
}
copyMetallicRoughness.SetPixels32(metallicRoughnessPixels);
copyMetallicRoughness.Apply();
copyMetallicRoughness.name = metallicRoughnessTexture.name;
return(copyMetallicRoughness);
}
else
{
var copyMetallicRoughness = TextureConverter.CopyTexture(metallicRoughnessTexture, ColorSpace.Linear, null);
var metallicRoughnessPixels = copyMetallicRoughness.GetPixels32();
var copyOcclusion = TextureConverter.CopyTexture(occlusionTexture, ColorSpace.Linear, null);
var occlusionPixels = copyOcclusion.GetPixels32();
if (metallicRoughnessPixels.Length != occlusionPixels.Length)
{
throw new NotImplementedException();
}
for (int i = 0; i < metallicRoughnessPixels.Length; ++i)
{
metallicRoughnessPixels[i] = ImportPixel(metallicRoughnessPixels[i], metallicFactor, roughnessFactor, occlusionPixels[i]);
}
copyMetallicRoughness.SetPixels32(metallicRoughnessPixels);
copyMetallicRoughness.Apply();
copyMetallicRoughness.name = metallicRoughnessTexture.name;
return(copyMetallicRoughness);
}
}
else if (metallicRoughnessTexture != null)
{
var copyTexture = TextureConverter.CopyTexture(metallicRoughnessTexture, ColorSpace.Linear, null);
copyTexture.SetPixels32(copyTexture.GetPixels32().Select(x => ImportPixel(x, metallicFactor, roughnessFactor, default)).ToArray());
copyTexture.Apply();
copyTexture.name = metallicRoughnessTexture.name;
return(copyTexture);
}
else if (occlusionTexture != null)
{
var copyTexture = TextureConverter.CopyTexture(occlusionTexture, ColorSpace.Linear, null);
copyTexture.SetPixels32(copyTexture.GetPixels32().Select(x => ImportPixel(default, metallicFactor, roughnessFactor, x)).ToArray());
public void CopyFromNonReadableSRgbPng()
{
var nonReadableTex = AssetDatabase.LoadAssetAtPath <Texture2D>($"{AssetPath}/4x4.png");
Assert.False(nonReadableTex.isReadable);
var copiedTex = TextureConverter.CopyTexture(nonReadableTex, ColorSpace.sRGB, null);
var pixels = copiedTex.GetPixels32(miplevel: 0);
Assert.AreEqual(pixels.Length, PngTextureValues.Length);
for (var idx = 0; idx < pixels.Length; ++idx)
{
Assert.AreEqual(PngTextureValues[idx], pixels[idx]);
}
}
private static (byte[] bytes, string mime) CopyTextureAndGetBytesWithMime(Texture2D texture, ColorSpace colorSpace)
{
var needsAlpha = texture.format != TextureFormat.RGB24;
var copiedTex = TextureConverter.CopyTexture(texture, colorSpace, needsAlpha, null);
var bytes = copiedTex.EncodeToPNG();
if (Application.isPlaying)
{
UnityEngine.Object.Destroy(copiedTex);
}
else
{
UnityEngine.Object.DestroyImmediate(copiedTex);
}
return(bytes, "image/png");
}
public void CopyAttributes()
{
var src = AssetDatabase.LoadAssetAtPath <Texture2D>($"{AssetPath}/4x4_non_readable.png");
var dst = TextureConverter.CopyTexture(src, ColorSpace.sRGB, false, null);
Assert.AreEqual(src.name, dst.name);
Assert.AreEqual(src.anisoLevel, dst.anisoLevel);
Assert.AreEqual(src.filterMode, dst.filterMode);
Assert.AreEqual(src.mipMapBias, dst.mipMapBias);
Assert.AreEqual(src.wrapMode, dst.wrapMode);
Assert.AreEqual(src.wrapModeU, dst.wrapModeU);
Assert.AreEqual(src.wrapModeV, dst.wrapModeV);
Assert.AreEqual(src.wrapModeW, dst.wrapModeW);
Assert.AreEqual(src.mipmapCount, dst.mipmapCount);
Assert.AreEqual(src.width, dst.width);
Assert.AreEqual(src.height, dst.height);
Assert.AreEqual(src.format, dst.format);
Assert.AreEqual(src.imageContentsHash, dst.imageContentsHash);
}
public static Texture2D Export(Texture metallicSmoothTexture, float smoothness, Texture occlusionTexture)
{
if (metallicSmoothTexture == null && occlusionTexture == null)
{
throw new ArgumentNullException("no texture");
}
var src = metallicSmoothTexture != null ? metallicSmoothTexture : occlusionTexture;
Exporter.mainTexture = src;
Exporter.SetTexture("_UnityMetallicSmoothTexture", metallicSmoothTexture);
Exporter.SetTexture("_UnityOcclusionTexture", occlusionTexture);
Exporter.SetFloat("_UnitySmoothness", smoothness);
var dst = TextureConverter.CopyTexture(src, ColorSpace.Linear, true, Exporter);
Exporter.mainTexture = null;
Exporter.SetTexture("_UnityMetallicSmoothTexture", null);
Exporter.SetTexture("_UnityOcclusionTexture", null);
Exporter.SetFloat("_UnitySmoothness", 0);
return(dst);
}
// Unity texture to GLTF data
// ConvertToRawColorWhenNormalValueIsCompressed
public static Texture2D Export(Texture texture)
{
return(TextureConverter.Convert(texture, ColorSpace.Linear, null, Decoder));
}
// Unity texture to GLTF data
public static Texture2D Export(Texture texture)
{
return(TextureConverter.CopyTexture(texture, ColorSpace.Linear, false, Exporter));
}
// Unity texture to GLTF data
// ConvertToRawColorWhenNormalValueIsCompressed
public static Texture2D Export(Texture texture)
{
return(TextureConverter.Convert(texture, TextureImportTypes.NormalMap, null, Decoder));
}