Changes for opengl render to reflect new alpha premul pipeline

without hurting quick texture painting

- ED_view3d_draw_offscreen will now output buffer with
  transparent alpha, if sky needed it should be alpha-undered
  later.

- ED_view3d_draw_offscreen_imbuf now accepts alpha mode as an
  argument which could be either R_ADDSKY or R_PREMULALPHA

- OpenGL render and sequencer's opengl preview will now reflect
  scene's Alpha Mode

- Quick Edit will use OpenGL with transparent alpha mode

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/windowmanager/intern/wm_files.c b/source/blender/windowmanager/intern/wm_files.c
index f31aff3d3f8..a9b3e4272ce 100644
--- a/source/blender/windowmanager/intern/wm_files.c
+++ b/source/blender/windowmanager/intern/wm_files.c
@@ -733,11 +733,11 @@ static ImBuf *blend_file_thumb(Scene *scene, bScreen *screen, int **thumb_pt)
 	if (scene->camera) {
 		ibuf = ED_view3d_draw_offscreen_imbuf_simple(scene, scene->camera,
 		                                             BLEN_THUMB_SIZE * 2, BLEN_THUMB_SIZE * 2,
-		                                             IB_rect, OB_SOLID, FALSE, FALSE, FALSE, err_out);
+		                                             IB_rect, OB_SOLID, FALSE, FALSE, R_ADDSKY, err_out);
 	}
 	else {
 		ibuf = ED_view3d_draw_offscreen_imbuf(scene, v3d, ar, BLEN_THUMB_SIZE * 2, BLEN_THUMB_SIZE * 2,
-		                                      IB_rect, FALSE, FALSE, err_out);
+		                                      IB_rect, FALSE, R_ADDSKY, err_out);
 	}
 
 	if (ibuf) {