DRW: Add new features from lightcache branch

- Change gl_context_mutex to a ticket mutex ensuring interactivity even
  when rendering.
- Add DRW_custom_pipeline for using DRW outside of the viewport and render
  pipeline.
- DRW_opengl_render_context_*** and DRW_gawain_render_context_*** to use
  with DRW_custom_pipeline.
- Add possibility to bypass deferred compilation on demand (not User
  demand).
- Add union to access DRWMatrixState members more easily.

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/draw/DRW_engine.h b/source/blender/draw/DRW_engine.h
index d2a3bab9b20..ab2001dcb6a 100644
--- a/source/blender/draw/DRW_engine.h
+++ b/source/blender/draw/DRW_engine.h
@@ -136,6 +136,11 @@ void DRW_opengl_context_destroy(void);
 void DRW_opengl_context_enable(void);
 void DRW_opengl_context_disable(void);
 
+void DRW_opengl_render_context_enable(void *re_gl_context);
+void DRW_opengl_render_context_disable(void *re_gl_context);
+void DRW_gawain_render_context_enable(void *re_gwn_context);
+void DRW_gawain_render_context_disable(void *re_gwn_context);
+
 void DRW_deferred_shader_remove(struct GPUMaterial *mat);
 
 struct DrawDataList *DRW_drawdatalist_from_id(struct ID *id);