/* 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) { int count1 = 0, count2 = 0; for(int i=0;i<45;i++) { count1++; count2 = 0; for(int j=0;j<45;j++) { count2++; if(count2 == 29) break; } if(count1 == 29) break; } float gray; if( (count1 == 29) && (count2 == 29)) gray=1.0; else gray=0.0; color = vec4(gray, gray, gray, 1.0); gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex; }