er1n/zinnia: A little toolkit for single-quad fragment shader demos - examples/test/shaders/march_prolog.glsl at ee9352958f1d3d4e4d3ee610d5c34f0579e708e3 - zinnia - bits and atoms and coffee

A little toolkit for single-quad fragment shader demos

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 								struct SceneResult {
 									float d;
 									float mat_idx;
 								};
 								SceneResult min_sr(SceneResult a, SceneResult b) {
 									return (a.d < b.d) ? a : b;
 								}