[Bf-blender-cvs] [8eedccb3f5d] blender2.8: Fix T56752: Tooltip flicker alpha on redraw

[Clément Foucault]

Commit: 8eedccb3f5d91bc60c4feb284cc2045badb45041
Author: Clément Foucault
Date:   Tue Sep 11 22:11:05 2018 +0200
Branches: blender2.8
https://developer.blender.org/rB8eedccb3f5d91bc60c4feb284cc2045badb45041

Fix T56752: Tooltip flicker alpha on redraw

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

M	source/blender/editors/interface/interface_widgets.c

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

diff --git a/source/blender/editors/interface/interface_widgets.c b/source/blender/editors/interface/interface_widgets.c
index dd57a27102f..e81af2755b1 100644
--- a/source/blender/editors/interface/interface_widgets.c
+++ b/source/blender/editors/interface/interface_widgets.c
@@ -2463,6 +2463,7 @@ static void widget_menu_back(uiWidgetColors *wcol, rcti *rect, int flag, int dir
 		rect->ymax += 0.1f * U.widget_unit;
 	}
 
+	GPU_blend_set_func_separate(GPU_SRC_ALPHA, GPU_ONE_MINUS_SRC_ALPHA, GPU_ONE, GPU_ONE_MINUS_SRC_ALPHA);
 	GPU_blend(true);
 	widget_softshadow(rect, roundboxalign, wcol->roundness * U.widget_unit);