New dilation function from Morten Mikkelsen (aka sparky).

This commit fixes very noticeable seams caused by margins
calculated incorrectly. This commit changes way margin is
calculated in and makes textures really seamless.

Also margin limited to 32 isn't good now -- artists are baking
really large textures nowadays so margin is now limited to 64px.

Thank you, Morten!

1 files changed, 1 insertions, 21 deletions

diff --git a/source/blender/render/intern/source/rendercore.c b/source/blender/render/intern/source/rendercore.c
index 3aca334cffe..a7e19c8db4f 100644
--- a/source/blender/render/intern/source/rendercore.c
+++ b/source/blender/render/intern/source/rendercore.c
@@ -2577,27 +2577,7 @@ void RE_bake_ibuf_filter(ImBuf *ibuf, char *mask, const int filter)
 
 	/* Margin */
 	if(filter) {
-		char *temprect;
-		int i;
-
-		/* extend the mask +2 pixels from the image,
-		 * this is so colors dont blend in from outside */
-
-		for(i=0; i< filter; i++)
-			IMB_mask_filter_extend(mask, ibuf->x, ibuf->y);
-
-		temprect = MEM_dupallocN(mask);
-
-		/* expand twice to clear this many pixels, so they blend back in */
-		IMB_mask_filter_extend(temprect, ibuf->x, ibuf->y);
-		IMB_mask_filter_extend(temprect, ibuf->x, ibuf->y);
-
-		/* clear all pixels in the margin */
-		IMB_mask_clear(ibuf, temprect, FILTER_MASK_MARGIN);
-		MEM_freeN(temprect);
-
-		for(i= 0; i < filter; i++)
-			IMB_filter_extend(ibuf, mask);
+		IMB_filter_extend(ibuf, mask, filter);
 	}
 
 	/* if the bake results in new alpha then change the image setting */