[Bf-blender-cvs] [cd6c6ee] master: Fix T46993: UI lag in fullscreen mode on OS X / Intel graphics.

[Brecht Van Lommel]

Commit: cd6c6ee1a54ec0eed33592bcb7e499ce5141d4ac
Author: Brecht Van Lommel
Date:   Thu Jan 7 23:45:12 2016 +0100
Branches: master
https://developer.blender.org/rBcd6c6ee1a54ec0eed33592bcb7e499ce5141d4ac

Fix T46993: UI lag in fullscreen mode on OS X / Intel graphics.

If anyone finds OS X UI drawing glitches with different graphics cards please
report them and I'll add an exception specifically for Intel, but in theory this
should work fine for all graphics cards.

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

M	intern/ghost/intern/GHOST_ContextCGL.mm
M	source/blender/windowmanager/intern/wm_draw.c

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

diff --git a/intern/ghost/intern/GHOST_ContextCGL.mm b/intern/ghost/intern/GHOST_ContextCGL.mm
index 6a9c23e..e09de4b 100644
--- a/intern/ghost/intern/GHOST_ContextCGL.mm
+++ b/intern/ghost/intern/GHOST_ContextCGL.mm
@@ -177,10 +177,6 @@ static void makeAttribList(
 	// Pixel Format Attributes for the windowed NSOpenGLContext
 	attribs.push_back(NSOpenGLPFADoubleBuffer);
 
-	// Guarantees the back buffer contents to be valid after a call to NSOpenGLContext object's flushBuffer
-	// needed for 'Draw Overlap' drawing method
-	attribs.push_back(NSOpenGLPFABackingStore);
-
 	// Force software OpenGL, for debugging
 	/* XXX jwilkins: fixed this to work on Intel macs? useful feature for Windows and Linux too?
 	 * Maybe a command line flag is better... */
diff --git a/source/blender/windowmanager/intern/wm_draw.c b/source/blender/windowmanager/intern/wm_draw.c
index 8ace4ee..d20cffe 100644
--- a/source/blender/windowmanager/intern/wm_draw.c
+++ b/source/blender/windowmanager/intern/wm_draw.c
@@ -864,15 +864,6 @@ static int wm_automatic_draw_method(wmWindow *win)
 		/* ATI opensource driver is known to be very slow at this */
 		if (GPU_type_matches(GPU_DEVICE_ATI, GPU_OS_UNIX, GPU_DRIVER_OPENSOURCE))
 			return USER_DRAW_OVERLAP;
-		/* also Intel drivers are slow */
-#if 0	/* 2.64 BCon3 period, let's try if intel now works... */
-		else if (GPU_type_matches(GPU_DEVICE_INTEL, GPU_OS_UNIX, GPU_DRIVER_ANY))
-			return USER_DRAW_OVERLAP;
-		else if (GPU_type_matches(GPU_DEVICE_INTEL, GPU_OS_WIN, GPU_DRIVER_ANY))
-			return USER_DRAW_OVERLAP_FLIP;
-		else if (GPU_type_matches(GPU_DEVICE_INTEL, GPU_OS_MAC, GPU_DRIVER_ANY))
-			return USER_DRAW_OVERLAP_FLIP;
-#endif
 		/* Windows software driver darkens color on each redraw */
 		else if (GPU_type_matches(GPU_DEVICE_SOFTWARE, GPU_OS_WIN, GPU_DRIVER_SOFTWARE))
 			return USER_DRAW_OVERLAP_FLIP;