Texture painting:

Do not generate materials/images/UVs if they are missing.

Now we spawn a panel ("Missing Data") with operators to generate the missing data and
pop a warning if user tries to paint without them.

The reason we have reverted this is that it is too easy to end up with more textures
than we wanted. It was impossible to enter texture paint without having textures added,
and code makes too many assumptions about what user may want.

Discussed during Sunday's meeting.

This might be a candidate for 2.72a but I'm not sure how other artists will take this
(and how refined and crash-free it is), better make a few iterations first.

And for interested parties...test please, don't wait until after a release to poke with such issues.

Also, add slot operator now adds a new unconnected image node in cycles. Only
used in the "Missing Data" panel. This should be a separate commit but I am squashing it into the same commit because
it relies too much on changes done here and can be reverted easily if complainstorm occurs again.

1 files changed, 6 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_scene_types.h b/source/blender/makesdna/DNA_scene_types.h
index ab13c704df4..f8f962107f6 100644
--- a/source/blender/makesdna/DNA_scene_types.h
+++ b/source/blender/makesdna/DNA_scene_types.h
@@ -836,7 +836,7 @@ typedef struct Paint {
 typedef struct ImagePaintSettings {
 	Paint paint;
 
-	short flag, pad;
+	short flag, missing_data;
 	
 	/* for projection painting only */
 	short seam_bleed, normal_angle;
@@ -1734,6 +1734,11 @@ typedef enum ImagePaintMode {
 #define IMAGEPAINT_PROJECT_LAYER_STENCIL	256
 #define IMAGEPAINT_PROJECT_LAYER_STENCIL_INV	512
 
+#define IMAGEPAINT_MISSING_UVS       (1 << 0)
+#define IMAGEPAINT_MISSING_MATERIAL  (1 << 1)
+#define IMAGEPAINT_MISSING_TEX       (1 << 2)
+#define IMAGEPAINT_MISSING_STENCIL   (1 << 3)
+
 /* toolsettings->uvcalc_flag */
 #define UVCALC_FILLHOLES			1
 #define UVCALC_NO_ASPECT_CORRECT	2	/* would call this UVCALC_ASPECT_CORRECT, except it should be default with old file */