[Bf-blender-cvs] [bfaf41663ab] blender2.8: Motion Path: Don't blit MSAA buffer if there is no motion paths

[Clément Foucault]

Commit: bfaf41663abd929b3756f81f7cbbcb57419d21fd
Author: Clément Foucault
Date:   Mon Jul 30 14:18:38 2018 +0200
Branches: blender2.8
https://developer.blender.org/rBbfaf41663abd929b3756f81f7cbbcb57419d21fd

Motion Path: Don't blit MSAA buffer if there is no motion paths

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

M	source/blender/draw/intern/draw_anim_viz.c

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

diff --git a/source/blender/draw/intern/draw_anim_viz.c b/source/blender/draw/intern/draw_anim_viz.c
index 6bf7bf9ca08..f976c7b4d05 100644
--- a/source/blender/draw/intern/draw_anim_viz.c
+++ b/source/blender/draw/intern/draw_anim_viz.c
@@ -322,6 +322,13 @@ static void MPATH_draw_scene(void *vedata)
 	DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get();
 	DefaultTextureList *dtxl = DRW_viewport_texture_list_get();
 
+	if (DRW_pass_is_empty(psl->lines) &&
+	    DRW_pass_is_empty(psl->points))
+	{
+		/* Nothing to draw. */
+		return;
+	}
+
 	MULTISAMPLE_SYNC_ENABLE(dfbl, dtxl)
 
 	DRW_draw_pass(psl->lines);