kc3-lang/SDL

2016-01-04T22:00:04

Mac: allows apps to use OpenGL on a slower, integrated GPU. This is often useful for SDL apps that aren't meant to be games: the integrated GPU starts up faster, uses less power, and is often more than fast enough. Note that even with this change, the app will still default to the more powerful, discrete GPU if one is available; an app that prefers the integrated GPU will still need the NSSupportsAutomaticGraphicsSwitching key properly set in its Info.plist and Mac OS X 10.7 or later. https://developer.apple.com/library/mac/qa/qa1734/_index.html

diff --git a/src/video/cocoa/SDL_cocoaopengl.m b/src/video/cocoa/SDL_cocoaopengl.m
index aa36099..645e5ba 100644
--- a/src/video/cocoa/SDL_cocoaopengl.m
+++ b/src/video/cocoa/SDL_cocoaopengl.m
@@ -173,6 +173,8 @@ Cocoa_GL_CreateContext(_THIS, SDL_Window * window)
         return NULL;
     }
 
+    attr[i++] = NSOpenGLPFAAllowOfflineRenderers;
+
     /* specify a profile if we're on Lion (10.7) or later. */
     if (lion_or_later) {
         NSOpenGLPixelFormatAttribute profile = NSOpenGLProfileVersionLegacy;