File: quad.vert

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qt6-base 6.9.1%2Bdfsg-4
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#version 440

layout (location = 0) out vec2 v_uv;

void main()
{
    // https://www.saschawillems.de/blog/2016/08/13/vulkan-tutorial-on-rendering-a-fullscreen-quad-without-buffers/
    v_uv = vec2((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2);
    gl_Position = vec4(v_uv * 2.0 - 1.0, 0.0, 1.0);
}