/// <summary>
/// 画像のバイト列からテクスチャを作成する
/// <summary>
public static Texture2D CreateTexture(VrmLib.ImageTexture imageTexture)
{
Texture2D dstTexture = null;
UnityEngine.Material convertMaterial = null;
var texture = new Texture2D(2, 2, TextureFormat.ARGB32, false, imageTexture.ColorSpace == VrmLib.Texture.ColorSpaceTypes.Linear);
texture.LoadImage(imageTexture.Image.Bytes.ToArray());
// Convert Texture Gltf to Unity
if (imageTexture.TextureType == VrmLib.Texture.TextureTypes.NormalMap)
{
convertMaterial = TextureConvertMaterial.GetNormalMapConvertGltfToUnity();
dstTexture = UnityTextureUtil.CopyTexture(
texture,
GetRenderTextureReadWrite(imageTexture.ColorSpace),
convertMaterial);
}
else if (imageTexture.TextureType == VrmLib.Texture.TextureTypes.MetallicRoughness)
{
var metallicRoughnessImage = imageTexture as VrmLib.MetallicRoughnessImageTexture;
convertMaterial = TextureConvertMaterial.GetMetallicRoughnessGltfToUnity(metallicRoughnessImage.RoughnessFactor);
dstTexture = UnityTextureUtil.CopyTexture(
texture,
GetRenderTextureReadWrite(imageTexture.ColorSpace),
convertMaterial);
}
else if (imageTexture.TextureType == VrmLib.Texture.TextureTypes.Occlusion)
{
convertMaterial = TextureConvertMaterial.GetOcclusionGltfToUnity();
dstTexture = UnityTextureUtil.CopyTexture(
texture,
GetRenderTextureReadWrite(imageTexture.ColorSpace),
convertMaterial);
}
if (dstTexture != null)
{
if (texture != null)
{
UnityEngine.Object.DestroyImmediate(texture);
}
texture = dstTexture;
}
if (convertMaterial != null)
{
UnityEngine.Object.DestroyImmediate(convertMaterial);
}
return(texture);
}
public void ImportingColorTest()
{
{
var roughnessFactor = 1.0f;
var src = CreateMonoTexture(new UnityEngine.Color(1.0f, 1.0f, 1.0f, 1.0f), true);
var material = UniVRM10.TextureConvertMaterial.GetMetallicRoughnessGltfToUnity(roughnessFactor);
var dst = UnityTextureUtil.CopyTexture(src, RenderTextureReadWrite.Linear, material);
// r <- 255 : Same metallic (src.r)
// g <- 0 : (Unused)
// b <- 0 : (Unused)
// a <- 0 : ((1 - sqrt(src.g(as float) * roughnessFactor)))(as uint8)
EqualColor(GetColor(dst), new Color(1.0f, 0, 0, 0));
}
{
var roughnessFactor = 1.0f;
var src = CreateMonoTexture(new UnityEngine.Color(1.0f, 0.25f, 1.0f, 1.0f), true);
var material = UniVRM10.TextureConvertMaterial.GetMetallicRoughnessGltfToUnity(roughnessFactor);
var dst = UnityTextureUtil.CopyTexture(src, RenderTextureReadWrite.Linear, material);
// r <- 255 : Same metallic (src.r)
// g <- 0 : (Unused)
// b <- 0 : (Unused)
// a <- 128 : ((1 - sqrt(src.g(as float) * roughnessFactor)))(as uint8)
EqualColor(GetColor(dst), new Color(1.0f, 0, 0, 0.5f));
}
{
var roughnessFactor = 0.5f;
var src = CreateMonoTexture(new UnityEngine.Color(1.0f, 1.0f, 1.0f, 1.0f), true);
var material = UniVRM10.TextureConvertMaterial.GetMetallicRoughnessGltfToUnity(roughnessFactor);
var dst = UnityTextureUtil.CopyTexture(src, RenderTextureReadWrite.Linear, material);
// r <- 255 : Same metallic (src.r)
// g <- 0 : (Unused)
// b <- 0 : (Unused)
// a <- 74 : ((1 - sqrt(src.g(as float) * roughnessFactor)))(as uint8)
EqualColor(GetColor(dst), new Color(1.0f, 0, 0, 0.29289f));
}
{
var roughnessFactor = 0.0f;
var src = CreateMonoTexture(new UnityEngine.Color(1.0f, 1.0f, 1.0f, 1.0f), true);
var material = UniVRM10.TextureConvertMaterial.GetMetallicRoughnessGltfToUnity(roughnessFactor);
var dst = UnityTextureUtil.CopyTexture(src, RenderTextureReadWrite.Linear, material);
// r <- 255 : Same metallic (src.r)
// g <- 0 : (Unused)
// b <- 0 : (Unused)
// a <- 255 : ((1 - sqrt(src.g(as float) * roughnessFactor)))(as uint8)
EqualColor(GetColor(dst), new Color(1.0f, 0, 0, 1.0f));
}
}
/// <summary>
/// return (bytes, mime string)
/// </summary>
static (byte[], string) GetImageEncodedBytes(Texture src, RenderTextureReadWrite renderTextureReadWrite, Material renderMaterial = null)
{
#if false
/// 元になるアセットがあればそれを得る(png, jpgのみ)
var assetPath = UnityEditor.AssetDatabase.GetAssetPath(src);
if (!string.IsNullOrEmpty(assetPath))
{
var mime = GetSupportedMime(assetPath);
if (!string.IsNullOrEmpty(mime))
{
return(File.ReadAllBytes(assetPath), GetSupportedMime(assetPath));
}
}
#endif
var copy = UnityTextureUtil.CopyTexture(src, renderTextureReadWrite, renderMaterial);
return(copy.EncodeToPNG(), "image/png");
}
public void ExportingColorTest()
{
{
var smoothness = 1.0f;
var src = CreateMonoTexture(new UnityEngine.Color(1.0f, 1.0f, 1.0f, 1.0f), true);
var material = UniVRM10.TextureConvertMaterial.GetMetallicRoughnessUnityToGltf(smoothness);
var dst = UnityTextureUtil.CopyTexture(src, RenderTextureReadWrite.Linear, material);
// r <- 0 : (Unused)
// g <- 0 : ((1 - src.a(as float) * smoothness) ^ 2)(as uint8)
// b <- 255 : Same metallic (src.r)
// a <- 255 : (Unused)
EqualColor(GetColor(dst), new Color(0, 0, 1.0f, 1.0f));
}
{
var smoothness = 0.5f;
var src = CreateMonoTexture(new UnityEngine.Color(1.0f, 1.0f, 1.0f, 1.0f), true);
var material = UniVRM10.TextureConvertMaterial.GetMetallicRoughnessUnityToGltf(smoothness);
var dst = UnityTextureUtil.CopyTexture(src, RenderTextureReadWrite.Linear, material);
// r <- 0 : (Unused)
// g <- 63 : ((1 - src.a(as float) * smoothness) ^ 2)(as uint8)
// b <- 255 : Same metallic (src.r)
// a <- 255 : (Unused)
EqualColor(GetColor(dst), new Color(0, 0.25f, 1.0f, 1.0f));
}
{
var smoothness = 0.0f;
var src = CreateMonoTexture(new UnityEngine.Color(1.0f, 1.0f, 1.0f, 1.0f), true);
var material = UniVRM10.TextureConvertMaterial.GetMetallicRoughnessUnityToGltf(smoothness);
var dst = UnityTextureUtil.CopyTexture(src, RenderTextureReadWrite.Linear, material);
// r <- 0 : (Unused)
// g <- 255 : ((1 - src.a(as float) * smoothness) ^ 2)(as uint8)
// b <- 255 : Same metallic (src.r)
// a <- 255 : (Unused)
EqualColor(GetColor(dst), new Color(0, 1.0f, 1.0f, 1.0f));
}
}
