Revision: 20192
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=20192
Author: campbellbarton
Date: 2009-05-14 04:21:50 +0200 (Thu, 14 May 2009)
Log Message:
-----------
[#18685] dark pixels created when during texture "full baking"
fix/workaround - offset by a 500th of a pixel to avoid baking missing pixels
that are between 2 faces, its still possible pixels could be between faces but
much less likely then it is currently with pixel aligned UVs.
Modified Paths:
--------------
trunk/blender/source/blender/render/intern/source/rendercore.c
Modified: trunk/blender/source/blender/render/intern/source/rendercore.c
===================================================================
--- trunk/blender/source/blender/render/intern/source/rendercore.c
2009-05-14 00:10:25 UTC (rev 20191)
+++ trunk/blender/source/blender/render/intern/source/rendercore.c
2009-05-14 02:21:50 UTC (rev 20192)
@@ -2542,8 +2542,12 @@
/* get pixel level vertex coordinates */
for(a=0; a<4; a++) {
- vec[a][0]= tface->uv[a][0]*(float)bs->rectx - 0.5f;
- vec[a][1]= tface->uv[a][1]*(float)bs->recty - 0.5f;
+ /* Note, workaround for pixel aligned UVs which are common and
can screw up our intersection tests
+ * where a pixel gets inbetween 2 faces or the middle of a quad,
+ * camera aligned quads also have this problem but they are
less common.
+ * Add a small offset to the UVs, fixes bug #18685 - Campbell */
+ vec[a][0]= tface->uv[a][0]*(float)bs->rectx - (0.5f + 0.001);
+ vec[a][1]= tface->uv[a][1]*(float)bs->recty - (0.5f + 0.002);
}
/* UV indices have to be corrected for possible quad->tria splits */
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