/* Copyright (c) 2019 The Khronos Group Inc. Use of this source code is governed by an MIT-style license that can be found in the LICENSE.txt file. */ #ifdef GL_ES precision mediump float; #endif varying vec4 color; void main (void) { if(color.r > 0.75 || color.g > 0.75 || color.b > 0.75) { /* The background color is black by default. * Setting the fragment color to it simulates a discarded fragment. */ gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0); } else { gl_FragColor = color; } }