#version 450 core layout (std140, binding = 1) uniform clear_colour_in { vec4 clear_colour_in_data; }; layout (location = 0) out vec4 clear_colour; void main() { int low = gl_VertexIndex & 1; int high = gl_VertexIndex >> 1; clear_colour = clear_colour_in_data; gl_Position.x = (float(low) - 0.5f) * 2.0f; gl_Position.y = (float(high) - 0.5f) * 2.0f; gl_Position.z = 0.0f; gl_Position.w = 1.0f; }