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normal_fragment.glsl: added explanation. See #8318.

Mr.doob 9 years ago
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c8092c4ac9
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1 changed files with 2 additions and 0 deletions
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      src/renderers/shaders/ShaderChunk/normal_fragment.glsl

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src/renderers/shaders/ShaderChunk/normal_fragment.glsl
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@@ -1,5 +1,7 @@
 
 #ifdef FLAT_SHADED
 
 
+	// Workaround for Adreno/Nexus5 not able able to do dFdx( vViewPosition ) ...
 
+
 
 	vec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );
 
 	vec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );
 
 	vec3 normal = normalize( cross( fdx, fdy ) );