From 73eaadf6c37157e09b210ad3bee1d52707f87691 Mon Sep 17 00:00:00 2001 From: wm4 Date: Sat, 6 Dec 2014 23:57:50 +0100 Subject: vo_opengl: clamp filters to their size This gives better results with fancy-downscaling. The issue here is that fancy-downscalign "extends" the filter radius by some amount, which requires using a larger filter size and shader. Then most of the filter is "unused", but some filters still return non-0 coefficients, which create heavy artifacts. Just clamp them off. I'm not sure if this is the right solution, but at least it's better than before. --- video/out/filter_kernels.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/video/out/filter_kernels.c b/video/out/filter_kernels.c index 217bb25730..26f62ff567 100644 --- a/video/out/filter_kernels.c +++ b/video/out/filter_kernels.c @@ -91,7 +91,8 @@ void mp_compute_weights(struct filter_kernel *filter, double f, float *out_w) double sum = 0; for (int n = 0; n < filter->size; n++) { double x = f - (n - filter->size / 2 + 1); - double w = filter->weight(filter, fabs(x) / filter->inv_scale); + double c = fabs(x) / filter->inv_scale; + double w = c <= filter->radius ? filter->weight(filter, c) : 0; out_w[n] = w; sum += w; } -- cgit v1.2.3