diff options
Diffstat (limited to 'intern/cycles/kernel/filter/filter_reconstruction.h')
| -rw-r--r-- | intern/cycles/kernel/filter/filter_reconstruction.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/intern/cycles/kernel/filter/filter_reconstruction.h b/intern/cycles/kernel/filter/filter_reconstruction.h index 31a7487c77a..ceda8f71f98 100644 --- a/intern/cycles/kernel/filter/filter_reconstruction.h +++ b/intern/cycles/kernel/filter/filter_reconstruction.h @@ -95,14 +95,16 @@ ccl_device_inline void kernel_filter_finalize(int x, int y, } /* The weighted average of pixel colors (essentially, the NLM-filtered image). - * In case the solution of the linear model fails due to numerical issues, - * fall back to this value. */ + * In case the solution of the linear model fails due to numerical issues or + * returns non-sensical negative values, fall back to this value. */ float3 mean_color = XtWY[0]/XtWX[0]; math_trimatrix_vec3_solve(XtWX, XtWY, (*rank)+1, stride); float3 final_color = XtWY[0]; - if(!isfinite3_safe(final_color)) { + if(!isfinite3_safe(final_color) || + (final_color.x < -0.01f || final_color.y < -0.01f || final_color.z < -0.01f)) + { final_color = mean_color; } |