Merge pull request #357 from emackey/double-sided-alpha

glTF BLEND mode didn't respect double-sided flag.
CesiumGS · Mar 27, 2018 · 25177db · 25177db
2 parents 99e8b7b + 640bec1
commit 25177db
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/lib/processPbrMetallicRoughness.js b/lib/processPbrMetallicRoughness.js
@@ -610,7 +610,11 @@ function generateTechnique(gltf, material, options) {
     var techniqueStates;
     if (defined(alphaMode) && alphaMode !== 'OPAQUE') {
         techniqueStates = {
-            enable: [
+            enable: parameterValues.doubleSided ? [
+                WebGLConstants.DEPTH_TEST,
+                WebGLConstants.BLEND
+            ]: [
+                WebGLConstants.CULL_FACE,
                 WebGLConstants.DEPTH_TEST,
                 WebGLConstants.BLEND
             ],