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vo_opengl: don't precompute texcoord in global scope 

Breaks on mesa for whatever reason... even though it doesn't generate a
GLSL shader compiler error

Shouldn't make a performance difference for us because we cache `pos`
anyway, and most compute shaders will probably cache all of their
samples to shmem. Might have to re-visit this when we have an actual use
case for repeated sampling inside CS though. (RAVU + anti-ringing is a
possible candidate for that)
This commit is contained in:
Niklas Haas 2017-08-03 18:50:07 +02:00
parent 83f3910398
commit 5e89aed934
1 changed files with 1 additions and 1 deletions
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2
video/out/opengl/video.c
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@ -1183,7 +1183,7 @@ static void dispatch_compute(struct gl_video *p, int w, int h,
// Clamp the texture coordinates to prevent sampling out-of-bounds in
// threads that exceed the requested width/height
PRELUDE("#define texmap%d(id) min(texcoord%d_rot(id), vec2(1.0))\n", n, n);
PRELUDE("vec2 texcoord%d = texmap%d(gl_GlobalInvocationID);\n", n, n);
PRELUDE("#define texcoord%d texmap%d(gl_GlobalInvocationID)\n", n, n);
}
pass_record(p, gl_sc_generate(p->sc, GL_COMPUTE_SHADER));