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-rw-r--r--video/out/opengl/utils.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/video/out/opengl/utils.c b/video/out/opengl/utils.c
index cdd549a791..c168cc60eb 100644
--- a/video/out/opengl/utils.c
+++ b/video/out/opengl/utils.c
@@ -960,6 +960,11 @@ void gl_sc_gen_shader_and_reset(struct gl_shader_cache *sc)
else
ADD(frag, "uniform %s %s;\n", u->glsl_type, u->name);
}
+
+ // Additional helpers.
+ ADD(frag, "#define LUT_POS(x, lut_size) \\\n");
+ ADD(frag, " mix(0.5 / (lut_size), 1.0 - 0.5 / (lut_size), (x))\n");
+
// custom shader header
if (sc->header_text[0]) {
ADD(frag, "// header\n");