23 lines
424 B
Plaintext
23 lines
424 B
Plaintext
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layout(std140) uniform param {
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vec4 color;
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float size;
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} p;
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const vec2[6] rect_ = vec2[](
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vec2(-1., 1.),
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vec2(-1., 0.),
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vec2( 1., 0.),
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vec2(-1., 1.),
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vec2( 1., 0.),
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vec2( 1., 1.)
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);
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void main(void) {
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int id = gl_VertexID < 6? gl_VertexID: gl_VertexID-6;
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vec2 p = rect_[id]*vec2(1., p.size) + vec2(0., 1.-p.size);
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p.y *= (id == gl_VertexID? 1.: -1.);
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gl_Position = vec4(p, 0., 1.);
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}
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