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 IEnumerable <(SubAssetKey, TextureImportParam)> EnumerateTexturesReferencedByMaterials(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)
{
yield return(GltfPBRMaterial.EmissiveTexture(parser, m));
}
// 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));
}
}