Baking: new method to generate margin, based on adjacent faces

This significantly reduces discontinuities on UV seams, by giving a better
match of the texture filtered colors on both sides of the seam. It works by
using pixels from adjacent faces across the UV seam.

This new option is called "Adjacent Faces" and is the default. The old option
is called "Extend", and extends border pixels outwards.

Differential Revision: https://developer.blender.org/D13303

1 files changed, 11 insertions, 2 deletions

diff --git a/source/blender/makesdna/DNA_scene_types.h b/source/blender/makesdna/DNA_scene_types.h
index a491e131d71..864358e040c 100644
--- a/source/blender/makesdna/DNA_scene_types.h
+++ b/source/blender/makesdna/DNA_scene_types.h
@@ -563,11 +563,18 @@ typedef struct BakeData {
 
   char target;
   char save_mode;
-  char _pad[6];
+  char margin_type;
+  char _pad[5];
 
   struct Object *cage_object;
 } BakeData;
 
+/** #BakeData.margin_type (char) */
+typedef enum eBakeMarginType {
+  R_BAKE_ADJACENT_FACES = 0,
+  R_BAKE_EXTEND = 1,
+} eBakeMarginType;
+
 /** #BakeData.normal_swizzle (char) */
 typedef enum eBakeNormalSwizzle {
   R_BAKE_POSX = 0,
@@ -715,7 +722,9 @@ typedef struct RenderData {
 
   /* Bake Render options */
   short bake_mode, bake_flag;
-  short bake_filter, bake_samples;
+  short bake_margin, bake_samples;
+  short bake_margin_type;
+  char _pad9[6];
   float bake_biasdist, bake_user_scale;
 
   /* path to render output */