anki-3d-engine/shaders/QuadVert.glsl

// Copyright (C) 2009-2018, Panagiotis Christopoulos Charitos and contributors.
// All rights reserved.
// Code licensed under the BSD License.
// http://www.anki3d.org/LICENSE

#include "shaders/Common.glsl"

out gl_PerVertex
{
	vec4 gl_Position;
};

layout(location = 0) out vec2 out_uv;

void main()
{
	out_uv = vec2(gl_VertexID & 1, gl_VertexID >> 1) * 2.0;
	vec2 pos = out_uv * 2.0 - 1.0;

	gl_Position = vec4(pos, 0.0, 1.0);
}