static MaterialBindType _GetBindType(PBRMaterial pbr, string property)
{
switch (property)
{
// case UV_PROPERTY:
// return MaterialBindType.UvOffset;
case COLOR_PROPERTY:
return(MaterialBindType.Color);
case EMISSION_COLOR_PROPERTY:
return(MaterialBindType.EmissionColor);
}
throw new NotImplementedException();
}
static string _GetProperty(PBRMaterial pbr, MaterialBindType bindType)
{
switch (bindType)
{
// case MaterialBindType.UvOffset:
// case MaterialBindType.UvScale:
// return UV_PROPERTY;
case MaterialBindType.Color:
return(COLOR_PROPERTY);
case MaterialBindType.EmissionColor:
return(EMISSION_COLOR_PROPERTY);
}
throw new NotImplementedException();
}
static VrmLib.PBRMaterial ExportStandard(UnityEngine.Material src, GetOrCreateTextureDelegate map)
{
var material = new VrmLib.PBRMaterial(src.name)
{
};
switch (src.GetTag("RenderType", true))
{
case "Transparent":
material.AlphaMode = VrmLib.AlphaModeType.BLEND;
break;
case "TransparentCutout":
material.AlphaMode = VrmLib.AlphaModeType.MASK;
material.AlphaCutoff = src.GetFloat("_Cutoff");
break;
default:
material.AlphaMode = VrmLib.AlphaModeType.OPAQUE;
break;
}
if (src.HasProperty("_Color"))
{
material.BaseColorFactor = src.color.linear.FromUnitySrgbToLinear();
}
if (src.HasProperty("_MainTex"))
{
material.BaseColorTexture = map(src, src.GetTexture("_MainTex"), VrmLib.Texture.ColorSpaceTypes.Srgb, VrmLib.Texture.TextureTypes.Default);
}
if (src.HasProperty("_MetallicGlossMap"))
{
// float smoothness = 0.0f;
// if (m.HasProperty("_GlossMapScale"))
// {
// smoothness = m.GetFloat("_GlossMapScale");
// }
material.MetallicRoughnessTexture = map(
src,
src.GetTexture("_MetallicGlossMap"),
VrmLib.Texture.ColorSpaceTypes.Linear,
VrmLib.Texture.TextureTypes.MetallicRoughness)?.Texture;
if (material.MetallicRoughnessTexture != null)
{
material.MetallicFactor = 1.0f;
// Set 1.0f as hard-coded. See: https://github.com/vrm-c/UniVRM/issues/212.
material.RoughnessFactor = 1.0f;
}
}
if (material.MetallicRoughnessTexture == null)
{
if (src.HasProperty("_Metallic"))
{
material.MetallicFactor = src.GetFloat("_Metallic");
}
if (src.HasProperty("_Glossiness"))
{
material.RoughnessFactor = 1.0f - src.GetFloat("_Glossiness");
}
}
if (src.HasProperty("_BumpMap"))
{
material.NormalTexture = map(src, src.GetTexture("_BumpMap"), VrmLib.Texture.ColorSpaceTypes.Linear, VrmLib.Texture.TextureTypes.NormalMap)?.Texture;
if (src.HasProperty("_BumpScale"))
{
material.NormalTextureScale = src.GetFloat("_BumpScale");
}
}
if (src.HasProperty("_OcclusionMap"))
{
material.OcclusionTexture = map(src, src.GetTexture("_OcclusionMap"), VrmLib.Texture.ColorSpaceTypes.Linear, VrmLib.Texture.TextureTypes.Occlusion)?.Texture;
if (src.HasProperty("_OcclusionStrength"))
{
material.OcclusionTextureStrength = src.GetFloat("_OcclusionStrength");
}
}
if (src.IsKeywordEnabled("_EMISSION"))
{
if (src.HasProperty("_EmissionColor"))
{
var color = src.GetColor("_EmissionColor");
if (color.maxColorComponent > 1)
{
color /= color.maxColorComponent;
}
material.EmissiveFactor = new System.Numerics.Vector3(color.r, color.g, color.b);
}
if (src.HasProperty("_EmissionMap"))
{
material.EmissiveTexture = map(src, src.GetTexture("_EmissionMap"), VrmLib.Texture.ColorSpaceTypes.Srgb, VrmLib.Texture.TextureTypes.Emissive)?.Texture;
}
}
return(material);
}