/* 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. */ attribute vec4 gtf_Vertex; uniform mat4 gtf_ModelViewProjectionMatrix; varying vec4 color; void main (void) { ivec3 a = ivec3(20, 13, 17); float gray; if( (a[0] == 20) && (a[1] == 13) && (a[2] == 17) ) gray=1.0; else gray=0.0; color = vec4(gray, gray, gray, 1.0); gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex; }