/* 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) { int m = 23; int k = --m; float gray; if( ( k == 22 ) && ( m == 22 ) ) gray=1.0; else gray=0.0; gl_FragColor = vec4(gray, gray, gray, 1.0); }