#version 450 //#extension GL_EXT_debug_printf : enable #include "out.common.glsl" void main() { vec2 pos; switch (gl_VertexIndex) { case 0: pos = data.pos[0]; break; case 1: pos = data.pos[1]; break; case 2: pos = data.pos[2]; break; case 3: pos = data.pos[3]; break; } gl_Position = vec4(pos, 0.0, 1.0); // debugPrintfEXT("X gl_Position = %v4f, pos = %v2f", gl_Position, pos); }