protected virtual MaterialCacheData CreateMaterial(GLTF.Schema.Material def, int materialIndex) { MaterialCacheData materialWrapper = null; if (materialIndex < 0 || _assetCache.MaterialCache[materialIndex] == null) { Shader shader; // get the shader to use for this material try { if (_root.ExtensionsUsed != null && _root.ExtensionsUsed.Contains("KHR_materials_pbrSpecularGlossiness")) { shader = _shaderCache[MaterialType.KHR_materials_pbrSpecularGlossiness]; } else if (def.PbrMetallicRoughness != null) { shader = _shaderCache[MaterialType.PbrMetallicRoughness]; } else if (_root.ExtensionsUsed != null && _root.ExtensionsUsed.Contains("KHR_materials_common") && def.CommonConstant != null) { shader = _shaderCache[MaterialType.CommonConstant]; } else { shader = _shaderCache[MaterialType.PbrMetallicRoughness]; } } catch (KeyNotFoundException) { Debug.LogWarningFormat("No shader supplied for type of glTF material {0}, using Standard fallback", def.Name); shader = Shader.Find("Standard"); } shader.maximumLOD = MaximumLod; var material = new UnityEngine.Material(shader); if (def.AlphaMode == AlphaMode.MASK) { material.SetOverrideTag("RenderType", "TransparentCutout"); material.SetInt("_SrcBlend", (int)BlendMode.One); material.SetInt("_DstBlend", (int)BlendMode.Zero); material.SetInt("_ZWrite", 1); material.EnableKeyword("_ALPHATEST_ON"); material.DisableKeyword("_ALPHABLEND_ON"); material.DisableKeyword("_ALPHAPREMULTIPLY_ON"); material.renderQueue = (int)RenderQueue.AlphaTest; material.SetFloat("_Cutoff", (float)def.AlphaCutoff); } else if (def.AlphaMode == AlphaMode.BLEND) { material.SetOverrideTag("RenderType", "Transparent"); material.SetInt("_SrcBlend", (int)BlendMode.SrcAlpha); material.SetInt("_DstBlend", (int)BlendMode.OneMinusSrcAlpha); material.SetInt("_ZWrite", 0); material.DisableKeyword("_ALPHATEST_ON"); material.EnableKeyword("_ALPHABLEND_ON"); material.DisableKeyword("_ALPHAPREMULTIPLY_ON"); material.renderQueue = (int)RenderQueue.Transparent; } else { material.SetOverrideTag("RenderType", "Opaque"); material.SetInt("_SrcBlend", (int)BlendMode.One); material.SetInt("_DstBlend", (int)BlendMode.Zero); material.SetInt("_ZWrite", 1); material.DisableKeyword("_ALPHATEST_ON"); material.DisableKeyword("_ALPHABLEND_ON"); material.DisableKeyword("_ALPHAPREMULTIPLY_ON"); material.renderQueue = -1; } if (def.DoubleSided) { material.SetInt("_Cull", (int)CullMode.Off); } else { material.SetInt("_Cull", (int)CullMode.Back); } if (def.PbrMetallicRoughness != null) { var pbr = def.PbrMetallicRoughness; material.SetColor("_Color", pbr.BaseColorFactor.ToUnityColorRaw()); if (pbr.BaseColorTexture != null) { var textureDef = pbr.BaseColorTexture.Index.Value; material.SetTexture("_MainTex", CreateTexture(textureDef)); ApplyTextureTransform(pbr.BaseColorTexture, material, "_MainTex"); } material.SetFloat("_Metallic", (float)pbr.MetallicFactor); if (pbr.MetallicRoughnessTexture != null) { var texture = pbr.MetallicRoughnessTexture.Index.Value; material.SetTexture("_MetallicRoughnessMap", CreateTexture(texture)); ApplyTextureTransform(pbr.MetallicRoughnessTexture, material, "_MetallicRoughnessMap"); } material.SetFloat("_Roughness", (float)pbr.RoughnessFactor); } if (def.Extensions != null && def.Extensions.ContainsKey(KHR_materials_pbrSpecularGlossinessExtensionFactory.EXTENSION_NAME)) { KHR_materials_pbrSpecularGlossinessExtension specGloss = def.Extensions[KHR_materials_pbrSpecularGlossinessExtensionFactory.EXTENSION_NAME] as KHR_materials_pbrSpecularGlossinessExtension; if (specGloss.DiffuseTexture != null) { var texture = specGloss.DiffuseTexture.Index.Value; material.SetTexture("_MainTex", CreateTexture(texture)); ApplyTextureTransform(specGloss.DiffuseTexture, material, "_MainTex"); } else { material.SetColor("_Color", specGloss.DiffuseFactor.ToUnityColorRaw()); } if (specGloss.SpecularGlossinessTexture != null) { var texture = specGloss.SpecularGlossinessTexture.Index.Value; material.SetTexture("_SpecGlossMap", CreateTexture(texture)); material.EnableKeyword("_SPECGLOSSMAP"); ApplyTextureTransform(specGloss.SpecularGlossinessTexture, material, "_SpecGlossMap"); } else { material.SetVector("_SpecColor", specGloss.SpecularFactor.ToUnityVector3Raw()); material.SetFloat("_Glossiness", (float)specGloss.GlossinessFactor); } } if (def.CommonConstant != null) { material.SetColor("_AmbientFactor", def.CommonConstant.AmbientFactor.ToUnityColorRaw()); if (def.CommonConstant.LightmapTexture != null) { material.EnableKeyword("LIGHTMAP_ON"); var texture = def.CommonConstant.LightmapTexture.Index.Value; material.SetTexture("_LightMap", CreateTexture(texture)); material.SetInt("_LightUV", def.CommonConstant.LightmapTexture.TexCoord); ApplyTextureTransform(def.CommonConstant.LightmapTexture, material, "_LightMap"); } material.SetColor("_LightFactor", def.CommonConstant.LightmapFactor.ToUnityColorRaw()); } if (def.NormalTexture != null) { var texture = def.NormalTexture.Index.Value; material.SetTexture("_BumpMap", CreateTexture(texture)); material.SetFloat("_BumpScale", (float)def.NormalTexture.Scale); material.EnableKeyword("_NORMALMAP"); ApplyTextureTransform(def.NormalTexture, material, "_BumpMap"); } if (def.OcclusionTexture != null) { var texture = def.OcclusionTexture.Index; material.SetFloat("_OcclusionStrength", (float)def.OcclusionTexture.Strength); if (def.PbrMetallicRoughness != null && def.PbrMetallicRoughness.MetallicRoughnessTexture != null && def.PbrMetallicRoughness.MetallicRoughnessTexture.Index.Id == texture.Id) { material.EnableKeyword("OCC_METAL_ROUGH_ON"); } else { material.SetTexture("_OcclusionMap", CreateTexture(texture.Value)); ApplyTextureTransform(def.OcclusionTexture, material, "_OcclusionMap"); } } if (def.EmissiveTexture != null) { var texture = def.EmissiveTexture.Index.Value; material.EnableKeyword("EMISSION_MAP_ON"); material.EnableKeyword("_EMISSION"); material.SetTexture("_EmissionMap", CreateTexture(texture)); material.SetInt("_EmissionUV", def.EmissiveTexture.TexCoord); ApplyTextureTransform(def.EmissiveTexture, material, "_EmissionMap"); } material.SetColor("_EmissionColor", def.EmissiveFactor.ToUnityColorRaw()); materialWrapper = new MaterialCacheData { UnityMaterial = material, UnityMaterialWithVertexColor = new UnityEngine.Material(material), GLTFMaterial = def }; materialWrapper.UnityMaterialWithVertexColor.EnableKeyword("VERTEX_COLOR_ON"); if (materialIndex > 0) { _assetCache.MaterialCache[materialIndex] = materialWrapper; } } return(materialIndex > 0 ? _assetCache.MaterialCache[materialIndex] : materialWrapper); }
protected override async Task ConstructMaterial(GLTFMaterial def, int materialIndex) { var material = UnityEngine.Object.Instantiate(_templateMaterial); if (def.PbrMetallicRoughness != null) { var pbr = def.PbrMetallicRoughness; material.color = pbr.BaseColorFactor.ToUnityColorRaw(); if (pbr.BaseColorTexture != null) { TextureId textureId = pbr.BaseColorTexture.Index; await ConstructTexture(textureId.Value, textureId.Id, false, false); material.mainTexture = _assetCache.TextureCache[textureId.Id].Texture; var ext = GetTextureTransform(pbr.BaseColorTexture); if (ext != null) { material.mainTextureOffset = new Vector2(ext.Offset.X, 1 - ext.Scale.Y - ext.Offset.Y); material.mainTextureScale = new Vector2(ext.Scale.X, ext.Scale.Y); } } } else { IExtension sgExt = null; def.Extensions?.TryGetValue(KHR_materials_pbrSpecularGlossinessExtensionFactory.EXTENSION_NAME, out sgExt); var sg = sgExt as KHR_materials_pbrSpecularGlossinessExtension; if (sg != null) { material.color = sg.DiffuseFactor.ToUnityColorRaw(); if (sg.DiffuseTexture != null) { var textureId = sg.DiffuseTexture.Index; await ConstructTexture(textureId.Value, textureId.Id, false, false); material.mainTexture = _assetCache.TextureCache[textureId.Id].Texture; var ext = GetTextureTransform(sg.DiffuseTexture); if (ext != null) { material.mainTextureOffset = new Vector2(ext.Offset.X, 1 - ext.Scale.Y - ext.Offset.Y); material.mainTextureScale = new Vector2(ext.Scale.X, ext.Scale.Y); } } } } material.SetColor("_EmissiveColor", def.EmissiveFactor.ToUnityColorRaw()); if (def.EmissiveTexture != null) { TextureId textureId = def.EmissiveTexture.Index; await ConstructTexture(textureId.Value, textureId.Id, false, false); material.SetTexture("_EmissiveTex", _assetCache.TextureCache[textureId.Id].Texture); var ext = GetTextureTransform(def.EmissiveTexture); if (ext != null) { material.SetTextureOffset("_EmissiveTex", new Vector2(ext.Offset.X, 1 - ext.Scale.Y - ext.Offset.Y)); material.SetTextureScale("_EmissiveTex", new Vector2(ext.Scale.X, ext.Scale.Y)); } } material.SetFloat("_AlphaCutoff", (float)def.AlphaCutoff); switch (def.AlphaMode) { case AlphaMode.OPAQUE: material.renderQueue = (int)RenderQueue.Geometry; material.SetOverrideTag("RenderMode", "Opaque"); material.SetInt("_ZWrite", 1); material.SetInt("_SrcBlend", (int)BlendMode.One); material.SetInt("_DstBlend", (int)BlendMode.Zero); material.SetInt("_ShouldCutout", 0); break; case AlphaMode.MASK: material.renderQueue = (int)RenderQueue.AlphaTest; material.SetOverrideTag("RenderMode", "TransparentCutout"); material.SetInt("_ZWrite", 1); material.SetInt("_SrcBlend", (int)BlendMode.One); material.SetInt("_DstBlend", (int)BlendMode.Zero); material.SetInt("_ShouldCutout", 1); break; case AlphaMode.BLEND: material.renderQueue = (int)RenderQueue.Transparent; material.SetOverrideTag("RenderMode", "Transparent"); material.SetInt("_ZWrite", 0); material.SetInt("_SrcBlend", (int)BlendMode.SrcAlpha); material.SetInt("_DstBlend", (int)BlendMode.OneMinusSrcAlpha); material.SetInt("_ShouldCutout", 0); break; } MaterialCacheData materialWrapper = new MaterialCacheData { UnityMaterial = material, UnityMaterialWithVertexColor = material, GLTFMaterial = def }; if (materialIndex >= 0) { _assetCache.MaterialCache[materialIndex] = materialWrapper; } else { _defaultLoadedMaterial = materialWrapper; } }