Fix for bug #13363: ray (qmc) shadows had some light leaking issues,

due to jittering of the start position for antialiasing in a pixel.

Now it distributes the start position over the fixed osa sample
positions, instead of of random positions in space. The ugly bit is
that a custom ordering was defined for osa 8/11/16 to ensure that the
first 4 are distributed relatively fair for adaptive sampling to decide
if more samples need to be taken.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/render/intern/source/zbuf.c b/source/blender/render/intern/source/zbuf.c
index 1726c061df1..0ddcf78b8f0 100644
--- a/source/blender/render/intern/source/zbuf.c
+++ b/source/blender/render/intern/source/zbuf.c
@@ -3839,7 +3839,7 @@ static void shade_tra_samples_fill(ShadeSample *ssamp, int x, int y, int z, int
 					}
 					shi->mask= (1<<samp);
 					shi->samplenr= R.shadowsamplenr[shi->thread]++;
-					shade_input_set_viewco(shi, xs, ys, (float)z);
+					shade_input_set_viewco(shi, x, y, xs, ys, (float)z);
 					shade_input_set_uv(shi);
 					shade_input_set_normals(shi);
 					
@@ -3859,7 +3859,7 @@ static void shade_tra_samples_fill(ShadeSample *ssamp, int x, int y, int z, int
 			}
 			shi->mask= curmask;
 			shi->samplenr= R.shadowsamplenr[shi->thread]++;
-			shade_input_set_viewco(shi, xs, ys, (float)z);
+			shade_input_set_viewco(shi, x, y, xs, ys, (float)z);
 			shade_input_set_uv(shi);
 			shade_input_set_normals(shi);
 		}