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Bias the radius to avoid very large dither offsets

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Steven Robertson
2011-10-15 00:50:24 -04:00
parent 3be14547ea
commit 63483480d0
1 changed files with 1 additions and 1 deletions
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cuburn/code/iter.py
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@ -166,7 +166,7 @@ void iter(mwc_st *msts, iter_info *infos, uint64_t accbuf_ptr) {
if (threadIdx.y == 1 && threadIdx.x == 0) {
float ditherwidth = {{packer.get("0.33 * cp.spatial_filter_radius")}};
float u0 = mwc_next_01(rctx);
float u0 = mwc_next_01(rctx) + 0.02f;
float r = ditherwidth * sqrt(-2.0f * log2f(u0) / M_LOG2E);
float u1 = 2.0f * M_PI * mwc_next_01(rctx);