Blender Git Loki

Cleanup: Remove more unused vars

Cleanup: Remove unused variables

Merge branch 'blender2.8' into greasepencil-object

Add clamp support for textures

The texture is clamp using clamp of the UVs, because if we clamp the texture using GPU_texture_wrap_mode, any place where this texture is used would be affected.

Fix missing textures when reload

The texture is not saved in texturelist and is passed directly to shader

More warnings cleanup

Fixing gpencil screen drawing after warning cleanup

I find strange that this needs to be static, and can see this being an issue
for simultaneous drawing in the future. That said, better leave it
working as before.

Fix blenderplayer build

Fix build warnings

* gcc complain if you have a "main" variable
* Missing header include in gpencil_draw.w
* A few shadowed variables (we should avoid common names in (#define) macros)
* Clear ambiguity in (!flag & VALUE) -> ((flag & VALUE) == 0)

Cleaunp code

Fix memory leak and access violation

The builtin shaders are free in blender close, so the engine must not free them. The memory leak was relatred to recreate the shaders again and again, so the free only use the last copy.

Merge branch 'blender2.8' into greasepencil-object

Some missing free memory for shaders

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Check zdepth to avoid strokes in back of camera

Do not draw if the stroke ison back of the point of view.

Cleanup: Remove unused variables

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Cleanup: make code more compact