demos/tri.vert

/*
 * Vertex shader used by tri demo.
 */
#version 140
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vec4 pos;
layout (location = 1) in vec2 attr;
layout (location = 0) out vec2 texcoord;
void main() {
   texcoord = attr;
   gl_Position = pos;
}