public static IEnumerable <(SubAssetKey, TextureImportParam)> EnumerateTexturesForMaterial(GltfParser parser, int i)
{
var m = parser.GLTF.materials[i];
int?metallicRoughnessTexture = default;
if (m.pbrMetallicRoughness != null)
{
// base color
if (m.pbrMetallicRoughness?.baseColorTexture != null)
{
yield return(GltfPBRMaterial.BaseColorTexture(parser, m));
}
// metallic roughness
if (m.pbrMetallicRoughness?.metallicRoughnessTexture != null && m.pbrMetallicRoughness.metallicRoughnessTexture.index != -1)
{
metallicRoughnessTexture = m.pbrMetallicRoughness?.metallicRoughnessTexture?.index;
}
}
// emission
if (m.emissiveTexture != null)
{
var(offset, scale) = GltfMaterialImporter.GetTextureOffsetAndScale(m.emissiveTexture);
yield return(GltfTextureImporter.CreateSRGB(parser, m.emissiveTexture.index, offset, scale));
}
// normal
if (m.normalTexture != null)
{
yield return(GltfPBRMaterial.NormalTexture(parser, m));
}
// occlusion
int?occlusionTexture = default;
if (m.occlusionTexture != null && m.occlusionTexture.index != -1)
{
occlusionTexture = m.occlusionTexture.index;
}
// metallicSmooth and occlusion
if (metallicRoughnessTexture.HasValue || occlusionTexture.HasValue)
{
yield return(GltfPBRMaterial.StandardTexture(parser, m));
}
}
public static (SubAssetKey, TextureImportParam Param) EmissiveTexture(GltfParser parser, glTFMaterial src)
{
var(offset, scale) = GltfMaterialImporter.GetTextureOffsetAndScale(src.emissiveTexture);
return(GltfTextureImporter.CreateSRGB(parser, src.emissiveTexture.index, offset, scale));
}
public static (SubAssetKey, TextureImportParam Param) BaseColorTexture(GltfParser parser, glTFMaterial src)
{
var(offset, scale) = GltfMaterialImporter.GetTextureOffsetAndScale(src.pbrMetallicRoughness.baseColorTexture);
return(GltfTextureImporter.CreateSRGB(parser, src.pbrMetallicRoughness.baseColorTexture.index, offset, scale));
}
public static bool TryCreateParam(GltfParser parser, int i, out MaterialImportParam param)
{
if (i < 0 || i >= parser.GLTF.materials.Count)
{
param = default;
return(false);
}
var src = parser.GLTF.materials[i];
param = new MaterialImportParam(GltfMaterialImporter.MaterialName(i, src), ShaderName);
var standardParam = default(TextureImportParam);
if (src.pbrMetallicRoughness != null || src.occlusionTexture != null)
{
if (src.pbrMetallicRoughness.metallicRoughnessTexture != null || src.occlusionTexture != null)
{
SubAssetKey key;
(key, standardParam) = StandardTexture(parser, src);
}
if (src.pbrMetallicRoughness.baseColorFactor != null && src.pbrMetallicRoughness.baseColorFactor.Length == 4)
{
var color = src.pbrMetallicRoughness.baseColorFactor;
param.Colors.Add("_Color", (new Color(color[0], color[1], color[2], color[3])).gamma);
}
if (src.pbrMetallicRoughness.baseColorTexture != null && src.pbrMetallicRoughness.baseColorTexture.index != -1)
{
var(key, textureParam) = BaseColorTexture(parser, src);
param.TextureSlots.Add("_MainTex", textureParam);
}
if (src.pbrMetallicRoughness.metallicRoughnessTexture != null && src.pbrMetallicRoughness.metallicRoughnessTexture.index != -1)
{
param.Actions.Add(material => material.EnableKeyword("_METALLICGLOSSMAP"));
param.TextureSlots.Add("_MetallicGlossMap", standardParam);
// Set 1.0f as hard-coded. See: https://github.com/dwango/UniVRM/issues/212.
param.FloatValues.Add("_Metallic", 1.0f);
param.FloatValues.Add("_GlossMapScale", 1.0f);
}
else
{
param.FloatValues.Add("_Metallic", src.pbrMetallicRoughness.metallicFactor);
param.FloatValues.Add("_Glossiness", 1.0f - src.pbrMetallicRoughness.roughnessFactor);
}
}
if (src.normalTexture != null && src.normalTexture.index != -1)
{
param.Actions.Add(material => material.EnableKeyword("_NORMALMAP"));
var(key, textureParam) = NormalTexture(parser, src);
param.TextureSlots.Add("_BumpMap", textureParam);
param.FloatValues.Add("_BumpScale", src.normalTexture.scale);
}
if (src.occlusionTexture != null && src.occlusionTexture.index != -1)
{
param.TextureSlots.Add("_OcclusionMap", standardParam);
param.FloatValues.Add("_OcclusionStrength", src.occlusionTexture.strength);
}
if (src.emissiveFactor != null ||
(src.emissiveTexture != null && src.emissiveTexture.index != -1))
{
param.Actions.Add(material =>
{
material.EnableKeyword("_EMISSION");
material.globalIlluminationFlags &= ~MaterialGlobalIlluminationFlags.EmissiveIsBlack;
});
if (src.emissiveFactor != null && src.emissiveFactor.Length == 3)
{
param.Colors.Add("_EmissionColor", new Color(src.emissiveFactor[0], src.emissiveFactor[1], src.emissiveFactor[2]));
}
if (src.emissiveTexture != null && src.emissiveTexture.index != -1)
{
var(offset, scale) = GltfMaterialImporter.GetTextureOffsetAndScale(src.emissiveTexture);
var(key, textureParam) = GltfTextureImporter.CreateSRGB(parser, src.emissiveTexture.index, offset, scale);
param.TextureSlots.Add("_EmissionMap", textureParam);
}
}
param.Actions.Add(material =>
{
BlendMode blendMode = BlendMode.Opaque;
// https://forum.unity.com/threads/standard-material-shader-ignoring-setfloat-property-_mode.344557/#post-2229980
switch (src.alphaMode)
{
case "BLEND":
blendMode = BlendMode.Fade;
material.SetOverrideTag("RenderType", "Transparent");
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
material.SetInt("_ZWrite", 0);
material.DisableKeyword("_ALPHATEST_ON");
material.EnableKeyword("_ALPHABLEND_ON");
material.DisableKeyword("_ALPHAPREMULTIPLY_ON");
material.renderQueue = 3000;
break;
case "MASK":
blendMode = BlendMode.Cutout;
material.SetOverrideTag("RenderType", "TransparentCutout");
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
material.SetInt("_ZWrite", 1);
material.SetFloat("_Cutoff", src.alphaCutoff);
material.EnableKeyword("_ALPHATEST_ON");
material.DisableKeyword("_ALPHABLEND_ON");
material.DisableKeyword("_ALPHAPREMULTIPLY_ON");
material.renderQueue = 2450;
break;
default: // OPAQUE
blendMode = BlendMode.Opaque;
material.SetOverrideTag("RenderType", "");
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
material.SetInt("_ZWrite", 1);
material.DisableKeyword("_ALPHATEST_ON");
material.DisableKeyword("_ALPHABLEND_ON");
material.DisableKeyword("_ALPHAPREMULTIPLY_ON");
material.renderQueue = -1;
break;
}
material.SetFloat("_Mode", (float)blendMode);
});
return(true);
}
public static bool TryCreateParam(GltfParser parser, int i, out MaterialImportParam param)
{
if (i < 0 || i >= parser.GLTF.materials.Count)
{
param = default;
return(false);
}
var src = parser.GLTF.materials[i];
if (!glTF_KHR_materials_unlit.IsEnable(src))
{
param = default;
return(false);
}
param = new MaterialImportParam(GltfMaterialImporter.MaterialName(i, src), ShaderName);
// texture
if (src.pbrMetallicRoughness.baseColorTexture != null)
{
var(offset, scale) = GltfMaterialImporter.GetTextureOffsetAndScale(src.pbrMetallicRoughness.baseColorTexture);
var textureParam = GltfTextureImporter.CreateSRGB(parser, src.pbrMetallicRoughness.baseColorTexture.index, offset, scale);
param.TextureSlots.Add("_MainTex", textureParam);
}
// color
if (src.pbrMetallicRoughness.baseColorFactor != null && src.pbrMetallicRoughness.baseColorFactor.Length == 4)
{
var color = src.pbrMetallicRoughness.baseColorFactor;
param.Colors.Add("_Color", (new Color(color[0], color[1], color[2], color[3])).gamma);
}
//renderMode
param.Actions.Add(material =>
{
if (src.alphaMode == "OPAQUE")
{
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Opaque);
}
else if (src.alphaMode == "BLEND")
{
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Transparent);
}
else if (src.alphaMode == "MASK")
{
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Cutout);
material.SetFloat("_Cutoff", src.alphaCutoff);
}
else
{
// default OPAQUE
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Opaque);
}
// culling
if (src.doubleSided)
{
UniUnlit.Utils.SetCullMode(material, UniUnlit.UniUnlitCullMode.Off);
}
else
{
UniUnlit.Utils.SetCullMode(material, UniUnlit.UniUnlitCullMode.Back);
}
// VColor
var hasVertexColor = parser.GLTF.MaterialHasVertexColor(i);
if (hasVertexColor)
{
UniUnlit.Utils.SetVColBlendMode(material, UniUnlit.UniUnlitVertexColorBlendOp.Multiply);
}
UniUnlit.Utils.ValidateProperties(material, true);
});
return(true);
}
public static bool TryCreateParam(GltfData data, int i, out MaterialDescriptor matDesc)
{
if (i < 0 || i >= data.GLTF.materials.Count)
{
matDesc = default;
return(false);
}
var src = data.GLTF.materials[i];
if (!glTF_KHR_materials_unlit.IsEnable(src))
{
matDesc = default;
return(false);
}
matDesc = new MaterialDescriptor(GltfMaterialDescriptorGenerator.GetMaterialName(i, src), ShaderName);
// texture
if (src.pbrMetallicRoughness.baseColorTexture != null)
{
var(offset, scale) = GltfTextureImporter.GetTextureOffsetAndScale(src.pbrMetallicRoughness.baseColorTexture);
var(key, textureParam) = GltfTextureImporter.CreateSRGB(data, src.pbrMetallicRoughness.baseColorTexture.index, offset, scale);
matDesc.TextureSlots.Add("_MainTex", textureParam);
}
// color
if (src.pbrMetallicRoughness.baseColorFactor != null && src.pbrMetallicRoughness.baseColorFactor.Length == 4)
{
matDesc.Colors.Add("_Color",
src.pbrMetallicRoughness.baseColorFactor.ToColor4(ColorSpace.Linear, ColorSpace.sRGB)
);
}
//renderMode
matDesc.Actions.Add(material =>
{
if (src.alphaMode == "OPAQUE")
{
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Opaque);
}
else if (src.alphaMode == "BLEND")
{
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Transparent);
}
else if (src.alphaMode == "MASK")
{
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Cutout);
material.SetFloat("_Cutoff", src.alphaCutoff);
}
else
{
// default OPAQUE
UniUnlit.Utils.SetRenderMode(material, UniUnlit.UniUnlitRenderMode.Opaque);
}
// culling
if (src.doubleSided)
{
UniUnlit.Utils.SetCullMode(material, UniUnlit.UniUnlitCullMode.Off);
}
else
{
UniUnlit.Utils.SetCullMode(material, UniUnlit.UniUnlitCullMode.Back);
}
// VColor
var hasVertexColor = data.GLTF.MaterialHasVertexColor(i);
if (hasVertexColor)
{
UniUnlit.Utils.SetVColBlendMode(material, UniUnlit.UniUnlitVertexColorBlendOp.Multiply);
}
UniUnlit.Utils.ValidateProperties(material, true);
});
return(true);
}
public static (SubAssetKey, TextureDescriptor) EmissiveTexture(GltfData data, glTFMaterial src)
{
var(offset, scale) = GltfTextureImporter.GetTextureOffsetAndScale(src.emissiveTexture);
return(GltfTextureImporter.CreateSRGB(data, src.emissiveTexture.index, offset, scale));
}
public static (SubAssetKey, TextureDescriptor) BaseColorTexture(GltfData data, glTFMaterial src)
{
var(offset, scale) = GltfTextureImporter.GetTextureOffsetAndScale(src.pbrMetallicRoughness.baseColorTexture);
return(GltfTextureImporter.CreateSRGB(data, src.pbrMetallicRoughness.baseColorTexture.index, offset, scale));
}
public static bool TryCreateParam(GltfData data, int i, out MaterialDescriptor matDesc)
{
if (i < 0 || i >= data.GLTF.materials.Count)
{
matDesc = default;
return(false);
}
var src = data.GLTF.materials[i];
if (!glTF_KHR_materials_unlit.IsEnable(src))
{
matDesc = default;
return(false);
}
var textureSlots = new Dictionary <string, TextureDescriptor>();
var colors =
src.pbrMetallicRoughness.baseColorFactor != null &&
src.pbrMetallicRoughness.baseColorFactor.Length == 4
? new Dictionary <string, Color>
{
{
"_Color",
src.pbrMetallicRoughness.baseColorFactor.ToColor4(ColorSpace.Linear, ColorSpace.sRGB)
}
}
: new Dictionary <string, Color>();
// texture
if (src.pbrMetallicRoughness.baseColorTexture != null)
{
var(offset, scale) =
GltfTextureImporter.GetTextureOffsetAndScale(src.pbrMetallicRoughness.baseColorTexture);
var(key, textureParam) = GltfTextureImporter.CreateSRGB(data,
src.pbrMetallicRoughness.baseColorTexture.index, offset, scale);
textureSlots.Add("_MainTex", textureParam);
}
matDesc = new MaterialDescriptor(
GltfMaterialDescriptorGenerator.GetMaterialName(i, src),
UniUnlitUtil.ShaderName,
null,
textureSlots,
new Dictionary <string, float>(),
colors,
new Dictionary <string, Vector4>(),
new Action <Material>[]
{
//renderMode
material =>
{
switch (src.alphaMode)
{
case "OPAQUE":
UniUnlitUtil.SetRenderMode(material, UniUnlitRenderMode.Opaque);
break;
case "BLEND":
UniUnlitUtil.SetRenderMode(material, UniUnlitRenderMode.Transparent);
break;
case "MASK":
UniUnlitUtil.SetRenderMode(material, UniUnlitRenderMode.Cutout);
material.SetFloat(Cutoff, src.alphaCutoff);
break;
default:
// default OPAQUE
UniUnlitUtil.SetRenderMode(material, UniUnlitRenderMode.Opaque);
break;
}
// culling
if (src.doubleSided)
{
UniUnlitUtil.SetCullMode(material, UniUnlitCullMode.Off);
}
else
{
UniUnlitUtil.SetCullMode(material, UniUnlitCullMode.Back);
}
// VColor
var hasVertexColor = data.GLTF.MaterialHasVertexColor(i);
if (hasVertexColor)
{
UniUnlitUtil.SetVColBlendMode(material, UniUnlitVertexColorBlendOp.Multiply);
}
UniUnlitUtil.ValidateProperties(material, true);
}
}
);
return(true);
}