Fix up emissive energy compensation for glTF.

google · Feb 25, 2019 · 186920e · 186920e
1 parent d8ca867
commit 186920e
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/samples/app/MeshAssimp.cpp b/samples/app/MeshAssimp.cpp
@@ -144,8 +144,12 @@ std::string shaderFromConfig(MaterialConfig config) {
             material.roughness = materialParams.roughnessFactor * metallicRoughness.g;
             material.metallic = materialParams.metallicFactor * metallicRoughness.b;
             material.ambientOcclusion = texture(materialParams_aoMap, aoUV).r;
-            material.emissive = texture(materialParams_emissiveMap, emissiveUV);
+            material.emissive.rgb = texture(materialParams_emissiveMap, emissiveUV).rgb;
             material.emissive.rgb *= materialParams.emissiveFactor.rgb;
+
+            // The opinionated lighting model specified by glTF does not account for energy
+            // compensation, using this value basically disables it:
+            material.emissive.a = 3.0;
         )SHADER";
     }