/* 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_Color; attribute vec4 gtf_Vertex; uniform mat4 gtf_ModelViewProjectionMatrix; varying vec4 color; void main (void) { color = vec4(vec3(dot(gtf_Color.rgb, vec3(0.3333))), 1.0); gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex; }