[Bf-blender-cvs] [9dea69149ab] master: DRW: New function to retry stencil_mask value

[Antonioya]

Commit: 9dea69149ab54e59c8c3e2d341d0fc73c7a99527
Author: Antonioya
Date:   Wed Jun 26 13:28:26 2019 +0200
Branches: master
https://developer.blender.org/rB9dea69149ab54e59c8c3e2d341d0fc73c7a99527

DRW:  New function to retry stencil_mask value

This function is a workaround to use the stencil in grease pencil and reduce the number of clears.

Reviewed by @fclem.

Note: This function will be removed when draw manager supports stencil clearing by group.

===================================================================

M	source/blender/draw/intern/DRW_render.h
M	source/blender/draw/intern/draw_manager_data.c

===================================================================

diff --git a/source/blender/draw/intern/DRW_render.h b/source/blender/draw/intern/DRW_render.h
index aae1ad42860..392362e73c5 100644
--- a/source/blender/draw/intern/DRW_render.h
+++ b/source/blender/draw/intern/DRW_render.h
@@ -531,7 +531,11 @@ void DRW_shgroup_uniform_float_copy(DRWShadingGroup *shgroup, const char *name,
 void DRW_shgroup_uniform_vec2_copy(DRWShadingGroup *shgroup, const char *name, const float *value);
 
 bool DRW_shgroup_is_empty(DRWShadingGroup *shgroup);
+
+/* TODO: workaround functions waiting for the clearing operation to be available inside the
+ * shgroups. */
 DRWShadingGroup *DRW_shgroup_get_next(DRWShadingGroup *shgroup);
+uint DRW_shgroup_stencil_mask_get(DRWShadingGroup *shgroup);
 
 /* Passes */
 DRWPass *DRW_pass_create(const char *name, DRWState state);
diff --git a/source/blender/draw/intern/draw_manager_data.c b/source/blender/draw/intern/draw_manager_data.c
index 10d16021b27..99ab25645d2 100644
--- a/source/blender/draw/intern/draw_manager_data.c
+++ b/source/blender/draw/intern/draw_manager_data.c
@@ -1003,6 +1003,13 @@ DRWShadingGroup *DRW_shgroup_get_next(DRWShadingGroup *shgroup)
   return shgroup->next;
 }
 
+/* This is a workaround function waiting for the clearing operation to be available inside the
+ * shgroups. */
+uint DRW_shgroup_stencil_mask_get(DRWShadingGroup *shgroup)
+{
+  return shgroup->stencil_mask;
+}
+
 DRWShadingGroup *DRW_shgroup_create_sub(DRWShadingGroup *shgroup)
 {
   DRWShadingGroup *shgroup_new = BLI_memblock_alloc(DST.vmempool->shgroups);