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vo_opengl: correct off-by-one in scale=oversample 

This caused a single pixel shift to the top-left, introduced in e3e03d0f3.
This commit is contained in:
Niklas Haas 2017-07-07 13:45:25 +02:00
parent ae4c0134ed
commit 9a49a35453
1 changed files with 1 additions and 1 deletions
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2
video/out/opengl/video_shaders.c
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@ -251,7 +251,7 @@ void pass_sample_oversample(struct gl_shader_cache *sc, struct scaler *scaler,
int w, int h)
{
GLSLF("{\n");
GLSL(vec2 pos = pos + vec2(0.5) * pt;) // round to nearest
GLSL(vec2 pos = pos - vec2(0.5) * pt;) // round to nearest
GLSL(vec2 fcoord = fract(pos * size - vec2(0.5));)
// Determine the mixing coefficient vector
gl_sc_uniform_vec2(sc, "output_size", (float[2]){w, h});