+ uniform lowp vec4 uColor;\n
+ uniform lowp vec3 mixColor;\n
+ uniform lowp float opacity;\n
+ uniform lowp float preMultipliedAlpha;\n
+ \n
+ lowp vec4 visualMixColor()\n
+ {\n
+ return vec4( mixColor * mix( 1.0, opacity, preMultipliedAlpha ), opacity );\n
+ }\n