1#version 400
2#extension GL_ARB_separate_shader_objects : enable
3#extension GL_ARB_shading_language_420pack : enable
4layout (location = 0) in vec4 pos;
5layout (location = 1) in vec2 attr;
6layout (location = 0) out vec2 texcoord;
7void main() {
8   texcoord = attr;
9   gl_Position = pos;
10}
11