protected Shader FindShader(string shaderName)
{
var shader = Shader.Find(shaderName);
if (shader == null)
{
logger?.Error(LogCode.ShaderMissing, shaderName);
}
return(shader);
}
static void ExportUnlit(Material material, UnityEngine.Material uMaterial, IGltfWritable gltf, ICodeLogger logger)
{
gltf.RegisterExtensionUsage(Extension.MaterialsUnlit);
material.extensions = material.extensions ?? new MaterialExtension();
material.extensions.KHR_materials_unlit = new MaterialUnlit();
var pbr = material.pbrMetallicRoughness ?? new PbrMetallicRoughness();
if (uMaterial.HasProperty(k_Color))
{
pbr.baseColor = uMaterial.GetColor(k_Color);
}
if (uMaterial.HasProperty(k_MainTex))
{
var mainTex = uMaterial.GetTexture(k_MainTex);
if (mainTex != null)
{
if (mainTex is Texture2D)
{
pbr.baseColorTexture = ExportTextureInfo(mainTex, TextureMapType.Main, gltf);
ExportTextureTransform(pbr.baseColorTexture, uMaterial, k_MainTex, gltf);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "main", material.name);
}
}
}
material.pbrMetallicRoughness = pbr;
}
/// <inheritdoc />
public void SetParent(uint nodeIndex, uint parentIndex)
{
if (nodes[nodeIndex] == null || nodes[parentIndex] == null)
{
logger?.Error(LogCode.HierarchyInvalid);
return;
}
nodes[nodeIndex].transform.SetParent(nodes[parentIndex].transform, false);
}
static unsafe JobHandle?GetJointsJob(
void *input,
int count,
GLTFComponentType inputType,
int inputByteStride,
uint4 *output,
int outputByteStride,
ICodeLogger logger
)
{
Profiler.BeginSample("GetJointsJob");
JobHandle?jobHandle;
switch (inputType)
{
case GLTFComponentType.UnsignedByte:
var jointsUInt8Job = new Jobs.ConvertBoneJointsUInt8ToUInt32Job();
jointsUInt8Job.inputByteStride = inputByteStride > 0 ? inputByteStride : 4;
jointsUInt8Job.input = (byte *)input;
jointsUInt8Job.outputByteStride = outputByteStride;
jointsUInt8Job.result = output;
jobHandle = jointsUInt8Job.Schedule(count, GltfImport.DefaultBatchCount);
break;
case GLTFComponentType.UnsignedShort:
var jointsUInt16Job = new Jobs.ConvertBoneJointsUInt16ToUInt32Job();
jointsUInt16Job.inputByteStride = inputByteStride > 0 ? inputByteStride : 8;
jointsUInt16Job.input = (byte *)input;
jointsUInt16Job.outputByteStride = outputByteStride;
jointsUInt16Job.result = output;
jobHandle = jointsUInt16Job.Schedule(count, GltfImport.DefaultBatchCount);
break;
default:
logger?.Error(LogCode.TypeUnsupported, "Joints", inputType.ToString());
jobHandle = null;
break;
}
Profiler.EndSample();
return(jobHandle);
}
/// <summary>
/// Converts a Unity material to a glTF material.
/// </summary>
/// <param name="uMaterial">Source material</param>
/// <param name="material">Resulting material</param>
/// <param name="gltf">Associated IGltfWriter. Is used for adding images and textures.</param>
/// <param name="logger">Logger used for reporting</param>
/// <returns>True if no errors occured, false otherwise</returns>
public override bool ConvertMaterial(UnityEngine.Material uMaterial, out Material material, IGltfWritable gltf, ICodeLogger logger)
{
var success = true;
material = new Material {
name = uMaterial.name,
pbrMetallicRoughness = new PbrMetallicRoughness {
metallicFactor = 0,
roughnessFactor = 1.0f
}
};
SetAlphaModeAndCutoff(uMaterial, material);
material.doubleSided = IsDoubleSided(uMaterial);
//
// Emission
//
if (uMaterial.HasProperty(k_EmissiveColor))
{
var emissionColor = uMaterial.GetColor(k_EmissiveColor);
// Clamp emissiveColor to 0..1
var maxFactor = math.max(emissionColor.r, math.max(emissionColor.g, emissionColor.b));
if (maxFactor > 1f)
{
emissionColor.r /= maxFactor;
emissionColor.g /= maxFactor;
emissionColor.b /= maxFactor;
// TODO: use maxFactor as emissiveStrength (KHR_materials_emissive_strength)
}
material.emissive = emissionColor;
}
if (uMaterial.HasProperty(k_EmissionColorMap))
{
var emissionTex = uMaterial.GetTexture(k_EmissionColorMap);
if (emissionTex != null)
{
if (emissionTex is Texture2D)
{
material.emissiveTexture = ExportTextureInfo(emissionTex, gltf);
ExportTextureTransform(material.emissiveTexture, uMaterial, k_EmissionColorMap, gltf);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "emission", material.name);
success = false;
}
}
}
//
// Normal Map
//
if (
uMaterial.HasProperty(k_NormalMap) &&
uMaterial.IsKeywordEnabled(k_KeywordNormalMapTangentSpace)
)
{
var normalTex = uMaterial.GetTexture(k_NormalMap);
if (normalTex != null)
{
if (normalTex is Texture2D)
{
material.normalTexture = ExportNormalTextureInfo(normalTex, uMaterial, gltf);
ExportTextureTransform(material.normalTexture, uMaterial, k_NormalMap, gltf);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "normal", uMaterial.name);
success = false;
}
}
}
var mainTexProperty = uMaterial.HasProperty(k_BaseColorMap) ? k_BaseColorMap : k_MainTex;
if (IsUnlit(uMaterial))
{
ExportUnlit(material, uMaterial, mainTexProperty, gltf, logger);
}
else
{
success &= ExportPbrMetallicRoughness(
uMaterial,
material,
gltf,
logger
);
}
return(success);
}
static bool ExportPbrMetallicRoughness(
UnityEngine.Material uMaterial,
Material material,
IGltfWritable gltf,
ICodeLogger logger
)
{
var success = true;
var pbr = new PbrMetallicRoughness {
metallicFactor = 0, roughnessFactor = 1.0f
};
MaskMapImageExport ormImageExport = null;
if (uMaterial.IsKeywordEnabled(k_KeywordMaskMap) && uMaterial.HasProperty(k_MaskMap))
{
var maskMap = uMaterial.GetTexture(k_MaskMap) as Texture2D;
if (maskMap != null)
{
ormImageExport = new MaskMapImageExport(maskMap);
if (AddImageExport(gltf, ormImageExport, out var ormTextureId))
{
// TODO: smartly detect if metallic roughness channels are used and not create the
// texture info if not.
pbr.metallicRoughnessTexture = new TextureInfo {
index = ormTextureId
};
ExportTextureTransform(pbr.metallicRoughnessTexture, uMaterial, k_MaskMap, gltf);
// TODO: smartly detect if occlusion channel is used and not create the
// texture info if not.
material.occlusionTexture = new OcclusionTextureInfo {
index = ormTextureId
};
if (uMaterial.HasProperty(k_AORemapMin))
{
var occMin = uMaterial.GetFloat(k_AORemapMin);
material.occlusionTexture.strength = math.clamp(1 - occMin, 0, 1);
var occMax = uMaterial.GetFloat(k_AORemapMax);
if (occMax < 1f)
{
// TODO: remap texture values
logger?.Warning(LogCode.RemapUnsupported, "AO");
}
}
}
}
}
if (uMaterial.HasProperty(k_BaseColor))
{
pbr.baseColor = uMaterial.GetColor(k_BaseColor);
}
else
if (uMaterial.HasProperty(k_Color))
{
pbr.baseColor = uMaterial.GetColor(k_Color);
}
if (uMaterial.HasProperty(k_BaseColorMap))
{
// TODO if additive particle, render black into alpha
// TODO use private Material.GetFirstPropertyNameIdByAttribute here, supported from 2020.1+
var mainTex = uMaterial.GetTexture(k_BaseColorMap);
if (mainTex)
{
if (mainTex is Texture2D)
{
pbr.baseColorTexture = ExportTextureInfo(mainTex, gltf);
ExportTextureTransform(pbr.baseColorTexture, uMaterial, k_BaseColorMap, gltf);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "main", uMaterial.name);
success = false;
}
}
}
if (uMaterial.HasProperty(k_Metallic))
{
pbr.metallicFactor = uMaterial.GetFloat(k_Metallic);
}
if (ormImageExport != null && uMaterial.HasProperty(k_SmoothnessRemapMax))
{
pbr.roughnessFactor = uMaterial.GetFloat(k_SmoothnessRemapMax);
if (uMaterial.HasProperty(k_SmoothnessRemapMin) && uMaterial.GetFloat(k_SmoothnessRemapMin) > 0)
{
logger?.Warning(LogCode.RemapUnsupported, "Smoothness");
}
}
else
if (uMaterial.HasProperty(k_Smoothness))
{
pbr.roughnessFactor = 1f - uMaterial.GetFloat(k_Smoothness);
}
material.pbrMetallicRoughness = pbr;
return(success);
}
protected unsafe JobHandle?GetTangentsJob(
void *input,
int count,
GLTFComponentType inputType,
int inputByteStride,
float4 *output,
int outputByteStride,
bool normalized = false
)
{
Profiler.BeginSample("GetTangentsJob");
JobHandle?jobHandle;
switch (inputType)
{
case GLTFComponentType.Float: {
var jobTangent = new ConvertTangentsFloatToFloatInterleavedJob {
inputByteStride = inputByteStride > 0 ? inputByteStride : 16,
input = (byte *)input,
outputByteStride = outputByteStride,
result = output
};
#if UNITY_JOBS
jobHandle = jobTangent.ScheduleBatch(count, GltfImport.DefaultBatchCount);
#else
jobHandle = jobTangent.Schedule(count, GltfImport.DefaultBatchCount);
#endif
break;
}
case GLTFComponentType.Short: {
Assert.IsTrue(normalized);
var jobTangent = new ConvertTangentsInt16ToFloatInterleavedNormalizedJob {
inputByteStride = inputByteStride > 0 ? inputByteStride : 8,
input = (short *)input,
outputByteStride = outputByteStride,
result = output
};
#if UNITY_JOBS
jobHandle = jobTangent.ScheduleBatch(count, GltfImport.DefaultBatchCount);
#else
jobHandle = jobTangent.Schedule(count, GltfImport.DefaultBatchCount);
#endif
break;
}
case GLTFComponentType.Byte: {
Assert.IsTrue(normalized);
var jobTangent = new ConvertTangentsInt8ToFloatInterleavedNormalizedJob {
inputByteStride = inputByteStride > 0 ? inputByteStride : 4,
input = (sbyte *)input,
outputByteStride = outputByteStride,
result = output
};
#if UNITY_JOBS
jobHandle = jobTangent.ScheduleBatch(count, GltfImport.DefaultBatchCount);
#else
jobHandle = jobTangent.Schedule(count, GltfImport.DefaultBatchCount);
#endif
break;
}
default:
logger?.Error(LogCode.TypeUnsupported, "Tangent", inputType.ToString());
jobHandle = null;
break;
}
Profiler.EndSample();
return(jobHandle);
}
/// <summary>
/// Converts a Unity material to a glTF material.
/// </summary>
/// <param name="uMaterial">Source material</param>
/// <param name="material">Resulting material</param>
/// <param name="gltf">Associated IGltfWriter. Is used for adding images and textures.</param>
/// <param name="logger">Logger used for reporting</param>
/// <returns>True if no errors occured, false otherwise</returns>
internal static bool ConvertMaterial(UnityEngine.Material uMaterial, out Material material, IGltfWritable gltf, ICodeLogger logger)
{
var success = true;
material = new Material {
name = uMaterial.name,
pbrMetallicRoughness = new PbrMetallicRoughness {
metallicFactor = 0,
roughnessFactor = 1.0f
}
};
switch (uMaterial.GetTag("RenderType", false, ""))
{
case "TransparentCutout":
if (uMaterial.HasProperty(k_Cutoff))
{
material.alphaCutoff = uMaterial.GetFloat(k_Cutoff);
}
material.alphaModeEnum = Material.AlphaMode.MASK;
break;
case "Transparent":
case "Fade":
material.alphaModeEnum = Material.AlphaMode.BLEND;
break;
default:
material.alphaModeEnum = Material.AlphaMode.OPAQUE;
break;
}
material.doubleSided = uMaterial.HasProperty(k_Cull) &&
uMaterial.GetInt(k_Cull) == (int)CullMode.Off;
if (uMaterial.IsKeywordEnabled("_EMISSION"))
{
if (uMaterial.HasProperty(k_EmissionColor))
{
material.emissive = uMaterial.GetColor(k_EmissionColor);
}
if (uMaterial.HasProperty(k_EmissionMap))
{
// var emissionTex = uMaterial.GetTexture(k_EmissionMap);
//
// if (emissionTex != null) {
// if(emissionTex is Texture2D) {
// material.emissiveTexture = ExportTextureInfo(emissionTex, TextureMapType.Emission);
// ExportTextureTransform(material.EmissiveTexture, uMaterial, "_EmissionMap");
// } else {
// logger?.Error(LogCode.TextureInvalidType, "emission", material.name );
// success = false;
// }
// }
}
}
if (
uMaterial.HasProperty(k_BumpMap) &&
(uMaterial.IsKeywordEnabled(Materials.Constants.kwNormalMap) ||
uMaterial.IsKeywordEnabled(k_KeywordBumpMap))
)
{
var normalTex = uMaterial.GetTexture(k_BumpMap);
if (normalTex != null)
{
if (normalTex is Texture2D)
{
material.normalTexture = ExportNormalTextureInfo(normalTex, TextureMapType.Bump, uMaterial, gltf);
ExportTextureTransform(material.normalTexture, uMaterial, k_BumpMap, gltf);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "normal", uMaterial.name);
success = false;
}
}
}
if (uMaterial.HasProperty(k_OcclusionMap))
{
var occTex = uMaterial.GetTexture(k_OcclusionMap);
if (occTex != null)
{
// if(occTex is Texture2D) {
// material.occlusionTexture = ExportOcclusionTextureInfo(occTex, TextureMapType.Occlusion, uMaterial);
// ExportTextureTransform(material.OcclusionTexture, uMaterial, "_OcclusionMap");
// } else {
// logger?.Error(LogCode.TextureInvalidType, "occlusion", material.name );
// success = false;
// }
}
}
if (IsUnlit(uMaterial))
{
ExportUnlit(material, uMaterial, gltf, logger);
}
else if (IsPbrMetallicRoughness(uMaterial))
{
success &= ExportPbrMetallicRoughness(uMaterial, out material.pbrMetallicRoughness, gltf, logger);
}
else if (IsPbrSpecularGlossiness(uMaterial))
{
// ExportPBRSpecularGlossiness(material, uMaterial);
}
else if (uMaterial.HasProperty(k_BaseMap))
{
var mainTex = uMaterial.GetTexture(k_BaseMap);
material.pbrMetallicRoughness = new PbrMetallicRoughness {
baseColor = uMaterial.HasProperty(k_BaseColor)
? uMaterial.GetColor(k_BaseColor)
: Color.white,
baseColorTexture = mainTex == null ? null : ExportTextureInfo(mainTex, TextureMapType.Main, gltf)
};
}
else if (uMaterial.HasProperty(k_ColorTexture))
{
var mainTex = uMaterial.GetTexture(k_ColorTexture);
material.pbrMetallicRoughness = new PbrMetallicRoughness {
baseColor = uMaterial.HasProperty(k_BaseColor)
? uMaterial.GetColor(k_BaseColor)
: Color.white,
baseColorTexture = mainTex == null ? null : ExportTextureInfo(mainTex, TextureMapType.Main, gltf)
};
}
else if (uMaterial.HasProperty(k_MainTex)) //else export main texture
{
var mainTex = uMaterial.GetTexture(k_MainTex);
if (mainTex != null)
{
material.pbrMetallicRoughness = new PbrMetallicRoughness {
metallicFactor = 0, roughnessFactor = 1.0f,
baseColorTexture = ExportTextureInfo(mainTex, TextureMapType.Main, gltf)
};
// ExportTextureTransform(material.pbrMetallicRoughness.baseColorTexture, uMaterial, "_MainTex");
}
if (uMaterial.HasProperty(k_TintColor))
{
//particles use _TintColor instead of _Color
material.pbrMetallicRoughness = material.pbrMetallicRoughness ?? new PbrMetallicRoughness {
metallicFactor = 0, roughnessFactor = 1.0f
};
material.pbrMetallicRoughness.baseColor = uMaterial.GetColor(k_TintColor);
}
material.doubleSided = true;
}
return(success);
}
static bool ExportPbrMetallicRoughness(UnityEngine.Material material, out PbrMetallicRoughness pbr, IGltfWritable gltf, ICodeLogger logger)
{
var success = true;
pbr = new PbrMetallicRoughness {
metallicFactor = 0, roughnessFactor = 1.0f
};
if (material.HasProperty(k_BaseColor))
{
pbr.baseColor = material.GetColor(k_BaseColor);
}
else
if (material.HasProperty(k_Color))
{
pbr.baseColor = material.GetColor(k_Color);
}
if (material.HasProperty(k_TintColor))
{
//particles use _TintColor instead of _Color
float white = 1;
if (material.HasProperty(k_Color))
{
var c = material.GetColor(k_Color);
white = (c.r + c.g + c.b) / 3.0f; //multiply alpha by overall whiteness of TintColor
}
pbr.baseColor = material.GetColor(k_TintColor) * white;
}
if (material.HasProperty(k_MainTex) || material.HasProperty("_BaseMap"))
{
// TODO if additive particle, render black into alpha
// TODO use private Material.GetFirstPropertyNameIdByAttribute here, supported from 2020.1+
var mainTexProperty = material.HasProperty(k_BaseMap) ? k_BaseMap : k_MainTex;
var mainTex = material.GetTexture(mainTexProperty);
if (mainTex)
{
if (mainTex is Texture2D)
{
pbr.baseColorTexture = ExportTextureInfo(mainTex, TextureMapType.Main, gltf);
ExportTextureTransform(pbr.baseColorTexture, material, mainTexProperty, gltf);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "main", material.name);
success = false;
}
}
}
if (material.HasProperty(k_Metallic) && !material.IsKeywordEnabled("_METALLICGLOSSMAP"))
{
pbr.metallicFactor = material.GetFloat(k_Metallic);
}
if (material.HasProperty(k_Glossiness) || material.HasProperty(k_Smoothness))
{
var smoothnessPropertyName = material.HasProperty(k_Smoothness) ? k_Smoothness : k_Glossiness;
var metallicGlossMap = material.GetTexture(k_MetallicGlossMap);
float smoothness = material.GetFloat(smoothnessPropertyName);
// legacy workaround: the UnityGLTF shaders misuse k_Glossiness as roughness but don't have a keyword for it.
if (material.shader.name.Equals("GLTF/PbrMetallicRoughness", StringComparison.Ordinal))
{
smoothness = 1 - smoothness;
}
pbr.roughnessFactor = (metallicGlossMap != null && material.HasProperty(k_GlossMapScale))
? material.GetFloat(k_GlossMapScale)
: 1f - smoothness;
}
if (material.HasProperty(k_MetallicGlossMap))
{
var mrTex = material.GetTexture(k_MetallicGlossMap);
if (mrTex != null)
{
if (mrTex is Texture2D)
{
// pbr.metallicRoughnessTexture = ExportTextureInfo(mrTex, TextureMapType.MetallicGloss);
// if (material.IsKeywordEnabled("_METALLICGLOSSMAP"))
// pbr.metallicFactor = 1.0f;
// ExportTextureTransform(pbr.MetallicRoughnessTexture, material, k_MetallicGlossMap);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "metallic/gloss", material.name);
success = false;
}
}
}
return(success);
}
/// <summary>
/// Converts a Unity material to a glTF material.
/// </summary>
/// <param name="uMaterial">Source material</param>
/// <param name="material">Resulting material</param>
/// <param name="gltf">Associated IGltfWriter. Is used for adding images and textures.</param>
/// <param name="logger">Logger used for reporting</param>
/// <returns>True if no errors occured, false otherwise</returns>
public override bool ConvertMaterial(UnityEngine.Material uMaterial, out Material material, IGltfWritable gltf, ICodeLogger logger)
{
var success = true;
material = new Material {
name = uMaterial.name,
pbrMetallicRoughness = new PbrMetallicRoughness {
metallicFactor = 0,
roughnessFactor = 1.0f
}
};
SetAlphaModeAndCutoff(uMaterial, material);
material.doubleSided = IsDoubleSided(uMaterial);
if (uMaterial.IsKeywordEnabled(k_KeywordEmission))
{
if (uMaterial.HasProperty(k_EmissionColor))
{
var emissionColor = uMaterial.GetColor(k_EmissionColor);
// Clamp emissionColor to 0..1
var maxFactor = math.max(emissionColor.r, math.max(emissionColor.g, emissionColor.b));
if (maxFactor > 1f)
{
emissionColor.r /= maxFactor;
emissionColor.g /= maxFactor;
emissionColor.b /= maxFactor;
// TODO: use maxFactor as emissiveStrength (KHR_materials_emissive_strength)
}
material.emissive = emissionColor;
}
if (uMaterial.HasProperty(k_EmissionMap))
{
var emissionTex = uMaterial.GetTexture(k_EmissionMap);
if (emissionTex != null)
{
if (emissionTex is Texture2D)
{
material.emissiveTexture = ExportTextureInfo(emissionTex, gltf);
if (material.emissiveTexture != null)
{
ExportTextureTransform(material.emissiveTexture, uMaterial, k_EmissionMap, gltf);
}
}
else
{
logger?.Error(LogCode.TextureInvalidType, "emission", material.name);
success = false;
}
}
}
}
if (
uMaterial.HasProperty(k_BumpMap) &&
(uMaterial.IsKeywordEnabled(Materials.Constants.kwNormalMap) ||
uMaterial.IsKeywordEnabled(k_KeywordBumpMap))
)
{
var normalTex = uMaterial.GetTexture(k_BumpMap);
if (normalTex != null)
{
if (normalTex is Texture2D)
{
material.normalTexture = ExportNormalTextureInfo(normalTex, uMaterial, gltf);
if (material.normalTexture != null)
{
ExportTextureTransform(material.normalTexture, uMaterial, k_BumpMap, gltf);
}
}
else
{
logger?.Error(LogCode.TextureInvalidType, "normal", uMaterial.name);
success = false;
}
}
}
var isPbrMetallicRoughness = IsPbrMetallicRoughness(uMaterial);
var needsMetalRoughTexture =
isPbrMetallicRoughness &&
(
HasMetallicGlossMap(uMaterial) ||
uMaterial.IsKeywordEnabled(k_KeywordSmoothnessTextureAlbedoChannelA)
);
OrmImageExport ormImageExport = null;
var mainTexProperty = k_MainTex;
if (uMaterial.HasProperty(k_BaseMap))
{
mainTexProperty = k_BaseMap;
}
else if (uMaterial.HasProperty(k_ColorTexture))
{
mainTexProperty = k_ColorTexture;
}
if (needsMetalRoughTexture)
{
ormImageExport = new OrmImageExport();
}
if (IsUnlit(uMaterial))
{
ExportUnlit(material, uMaterial, mainTexProperty, gltf, logger);
}
else if (isPbrMetallicRoughness)
{
success &= ExportPbrMetallicRoughness(
uMaterial,
material,
mainTexProperty,
ormImageExport,
gltf,
logger
);
}
else if (uMaterial.HasProperty(mainTexProperty))
{
var mainTex = uMaterial.GetTexture(mainTexProperty);
material.pbrMetallicRoughness = new PbrMetallicRoughness {
metallicFactor = 0,
roughnessFactor = 1.0f,
baseColor = uMaterial.HasProperty(k_BaseColor)
? uMaterial.GetColor(k_BaseColor)
: Color.white
};
if (mainTex != null)
{
material.pbrMetallicRoughness.baseColorTexture = ExportTextureInfo(mainTex, gltf);
if (material.pbrMetallicRoughness.baseColorTexture != null)
{
ExportTextureTransform(material.pbrMetallicRoughness.baseColorTexture, uMaterial, mainTexProperty, gltf);
}
}
if (uMaterial.HasProperty(k_TintColor))
{
//particles use _TintColor instead of _Color
material.pbrMetallicRoughness.baseColor = uMaterial.GetColor(k_TintColor);
}
}
if (uMaterial.HasProperty(k_OcclusionMap))
{
var occTex = uMaterial.GetTexture(k_OcclusionMap);
if (occTex != null)
{
if (occTex is Texture2D occTex2d)
{
if (ormImageExport == null)
{
material.occlusionTexture = ExportOcclusionTextureInfo(occTex2d, uMaterial, gltf);
}
else
{
material.occlusionTexture = new OcclusionTextureInfo();
ormImageExport.SetOcclusionTexture(occTex2d);
}
if (material.occlusionTexture != null)
{
ExportTextureTransform(
material.occlusionTexture,
uMaterial,
mainTexProperty, // Standard and Lit re-use main texture transform
gltf
);
}
}
else
{
logger?.Error(LogCode.TextureInvalidType, "occlusion", material.name);
success = false;
}
}
}
if (ormImageExport != null && material.pbrMetallicRoughness != null)
{
if (AddImageExport(gltf, ormImageExport, out var ormTextureId))
{
if (material.pbrMetallicRoughness.metallicRoughnessTexture != null)
{
material.pbrMetallicRoughness.metallicRoughnessTexture.index = ormTextureId;
ExportTextureTransform(material.pbrMetallicRoughness.metallicRoughnessTexture, uMaterial, k_MetallicGlossMap, gltf);
}
if (ormImageExport.hasOcclusion)
{
material.occlusionTexture.index = ormTextureId;
}
}
#if UNITY_IMAGECONVERSION
else
{
logger?.Error(LogCode.ExportImageFailed);
}
#endif
}
if (material.occlusionTexture != null)
{
if (uMaterial.HasProperty(MaterialGenerator.occlusionStrengthPropId))
{
material.occlusionTexture.strength = uMaterial.GetFloat(MaterialGenerator.occlusionStrengthPropId);
}
}
return(success);
}
static bool ExportPbrMetallicRoughness(
UnityEngine.Material uMaterial,
Material material,
int mainTexProperty,
OrmImageExport ormImageExport,
IGltfWritable gltf,
ICodeLogger logger
)
{
var success = true;
var pbr = new PbrMetallicRoughness {
metallicFactor = 0, roughnessFactor = 1.0f
};
var hasAlphaSmoothness = uMaterial.IsKeywordEnabled(k_KeywordSmoothnessTextureAlbedoChannelA);
if (uMaterial.HasProperty(k_BaseColor))
{
pbr.baseColor = uMaterial.GetColor(k_BaseColor);
}
else
if (uMaterial.HasProperty(k_Color))
{
pbr.baseColor = uMaterial.GetColor(k_Color);
}
if (uMaterial.HasProperty(k_TintColor))
{
//particles use _TintColor instead of _Color
float white = 1;
if (uMaterial.HasProperty(k_Color))
{
var c = uMaterial.GetColor(k_Color);
white = (c.r + c.g + c.b) / 3.0f; //multiply alpha by overall whiteness of TintColor
}
pbr.baseColor = uMaterial.GetColor(k_TintColor) * white;
}
if (uMaterial.HasProperty(mainTexProperty))
{
// TODO if additive particle, render black into alpha
// TODO use private Material.GetFirstPropertyNameIdByAttribute here, supported from 2020.1+
var mainTex = uMaterial.GetTexture(mainTexProperty);
if (mainTex)
{
if (mainTex is Texture2D)
{
pbr.baseColorTexture = ExportTextureInfo(
mainTex,
gltf,
// Force RGB for the baseColor, so that the alpha (which is smoothness)
// is not used for alpha-opacity
hasAlphaSmoothness
? ImageExportBase.Format.Jpg
: ImageExportBase.Format.Unknown
);
if (pbr.baseColorTexture != null)
{
ExportTextureTransform(pbr.baseColorTexture, uMaterial, mainTexProperty, gltf);
}
}
else
{
logger?.Error(LogCode.TextureInvalidType, "main", uMaterial.name);
success = false;
}
}
}
if (uMaterial.HasProperty(k_Metallic) && !HasMetallicGlossMap(uMaterial))
{
pbr.metallicFactor = uMaterial.GetFloat(k_Metallic);
}
if (uMaterial.HasProperty(k_Glossiness) || uMaterial.HasProperty(k_Smoothness))
{
var smoothnessPropId = uMaterial.HasProperty(k_Smoothness) ? k_Smoothness : k_Glossiness;
var metallicGlossMap = uMaterial.HasProperty(k_MetallicGlossMap) ? uMaterial.GetTexture(k_MetallicGlossMap) : null;
var smoothness = uMaterial.GetFloat(smoothnessPropId);
pbr.roughnessFactor = (metallicGlossMap != null || hasAlphaSmoothness) && uMaterial.HasProperty(k_GlossMapScale)
? uMaterial.GetFloat(k_GlossMapScale)
: 1f - smoothness;
}
if (uMaterial.HasProperty(k_MetallicGlossMap))
{
var mrTex = uMaterial.GetTexture(k_MetallicGlossMap);
if (mrTex != null)
{
if (mrTex is Texture2D mrTex2d)
{
pbr.metallicRoughnessTexture = pbr.metallicRoughnessTexture ?? new TextureInfo();
ormImageExport.SetMetalGlossTexture(mrTex2d);
if (HasMetallicGlossMap(uMaterial))
{
pbr.metallicFactor = 1.0f;
}
ExportTextureTransform(pbr.metallicRoughnessTexture, uMaterial, k_MetallicGlossMap, gltf);
}
else
{
logger?.Error(LogCode.TextureInvalidType, "metallic/gloss", uMaterial.name);
success = false;
}
}
}
if (uMaterial.IsKeywordEnabled(k_KeywordSmoothnessTextureAlbedoChannelA))
{
var smoothnessTex = uMaterial.GetTexture(mainTexProperty) as Texture2D;
if (smoothnessTex != null)
{
pbr.metallicRoughnessTexture = pbr.metallicRoughnessTexture ?? new TextureInfo();
ormImageExport.SetSmoothnessTexture(smoothnessTex);
ExportTextureTransform(pbr.metallicRoughnessTexture, uMaterial, mainTexProperty, gltf);
}
}
material.pbrMetallicRoughness = pbr;
return(success);
}