This commit addresses the somewhat weak handling of stackless textures in Blender with default (BI) renderer. To do so, it's defining an "other" texture context, and when in this one, it switches to using the "new shading" texture handling already known with Cycles engine.

So now, in the new "other" tex context, you can (depending on active data) have direct access to modifiers', force's or brushes' textures...

I also refactored a bit how texture contexts are handled (once again, we had some quite similar code in both space_buttons and RNA sources). This should also solve some harmless glitches like "no texture context selected in UI" sometimes when you remove data related to current texture (see e.g. after removing the material from default cube, in startup scene).

This usage of two different systems for textures, and the handling of switches between them, has been a bit tricky to get working right, but it is OK now I think. I also had to add a bool flag to buttons space, SB_TEX_USER_LIMITED (use_limited_texture_context in RNA), which indicates "new shading" texture code whether it has to ignore materials, lamps etc. (BI) or not (Cycles).

Btw, pinned textures from modifiers/force/etc. were also broken (showing nothing), now it should work too.

Thanks to Brecht for reviewing.

1 files changed, 4 insertions, 2 deletions

diff --git a/intern/cycles/blender/addon/ui.py b/intern/cycles/blender/addon/ui.py
index b9e71a29f6c..d33422050a0 100644
--- a/intern/cycles/blender/addon/ui.py
+++ b/intern/cycles/blender/addon/ui.py
@@ -885,13 +885,15 @@ class CyclesTexture_PT_context(CyclesButtonsPanel, Panel):
         use_pin_id = space.use_pin_id
         user = context.texture_user
 
-        if not use_pin_id or not isinstance(pin_id, bpy.types.Texture):
+        space.use_limited_texture_context = False
+
+        if not (use_pin_id and isinstance(pin_id, bpy.types.Texture)):
             pin_id = None
 
         if not pin_id:
             layout.template_texture_user()
 
-        if user:
+        if user or pin_id:
             layout.separator()
 
             split = layout.split(percentage=0.65)