Neil Roberts 6a62e3077b sdl: Don't set SDL_GL_DOUBLEBUFFER when the swap chain has no pref ... The ‘length’ for the swap chain is initially -1 which is supposed to mean ‘no preference’. However, both of the SDL winsys's were explicitly setting the SDL_GL_DOUBLEBUFFER attribute to zero in that case which would try to disable double buffering. On OS X, the equivalent to eglSwapBuffers (ie, [NSOpenGLContext flushBuffer]) does nothing for a single buffer context. The cogl-sdl-hello example does not specify the swap chain length so presumably it would end up with a single buffer config. When cogl_onscreen_swap_buffers is called it therefore does nothing and nothing is painted. I guess to make single-buffered contexts actually useful we should expose some public equivalent to glFlush so that you can ensure the rendering commands will actually hit the buffer. Alternatively we could document that cogl_onscreen_swap_buffers performs this task on single-buffered configs and then we could make the SDL winsys explicitly call glFlush in that case. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 71e57f99002d5dee79bbd44b3bc57712b99acb55)		2012-11-23 15:45:26 +00:00
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cogl-texture-pixmap-x11-private.h	Switch use of primitive glib types to c99 equivalents	2012-08-06 14:27:39 +01:00
cogl-texture-pixmap-x11.c	texture: Add a context pointer to each texture	2012-09-17 23:06:20 +01:00
cogl-texture-pixmap-x11.h	Switch use of primitive glib types to c99 equivalents	2012-08-06 14:27:39 +01:00
cogl-winsys-egl-android-private.h	Add a separate winsys vtable for each EGL platform	2011-12-08 17:38:25 +00:00
cogl-winsys-egl-android.c	Adds initial GLES2 integration support	2012-08-06 14:27:42 +01:00
cogl-winsys-egl-feature-functions.h	kms: Use a dummy surface instead of the surfaceless extension	2012-08-15 17:29:16 +01:00
cogl-winsys-egl-gdl-private.h	Add a separate winsys vtable for each EGL platform	2011-12-08 17:38:25 +00:00
cogl-winsys-egl-gdl.c	Adds initial GLES2 integration support	2012-08-06 14:27:42 +01:00
cogl-winsys-egl-kms-private.h	egl: Split out the KMS winsys as overrides of the EGL winsys	2011-12-09 17:29:49 +00:00
cogl-winsys-egl-kms.c	kms: Fix the version check for GBM	2012-09-06 18:30:30 +01:00
cogl-winsys-egl-null-private.h	Add a separate winsys vtable for each EGL platform	2011-12-08 17:38:25 +00:00
cogl-winsys-egl-null.c	Adds initial GLES2 integration support	2012-08-06 14:27:42 +01:00
cogl-winsys-egl-private.h	kms: Use a dummy surface instead of the surfaceless extension	2012-08-15 17:29:16 +01:00
cogl-winsys-egl-wayland-private.h	Add a separate winsys vtable for each EGL platform	2011-12-08 17:38:25 +00:00
cogl-winsys-egl-wayland.c	wayland: Port to new Wayland protocol	2012-10-18 17:25:21 +01:00
cogl-winsys-egl-x11-private.h	Rename the EGL_X11 winsys to EGL_XLIB	2011-12-14 16:40:26 +00:00
cogl-winsys-egl-x11.c	egl-x11: Don't use GLXDrawable on EGL	2012-08-06 18:51:33 +01:00
cogl-winsys-egl.c	Use the right context when pushing the GLES2 context to an onscreen	2012-10-01 15:05:22 +01:00
cogl-winsys-glx-feature-functions.h	winsys-glx: Don't assume that copy_sub_buffer is synchronized	2012-03-15 15:48:13 +00:00
cogl-winsys-glx-private.h	Add -Wmissing-declarations to maintainer flags and fix problems	2012-03-06 18:45:44 +00:00
cogl-winsys-glx.c	winsys-glx: Remove the vblank counter feature when indirect rendering	2012-09-28 17:15:11 +01:00
cogl-winsys-private.h	Avoid including the EGL headers from the public Cogl headers	2012-08-06 18:51:32 +01:00
cogl-winsys-sdl2.c	sdl: Don't set SDL_GL_DOUBLEBUFFER when the swap chain has no pref	2012-11-23 15:45:26 +00:00
cogl-winsys-sdl-private.h	Add -Wmissing-declarations to maintainer flags and fix problems	2012-03-06 18:45:44 +00:00
cogl-winsys-sdl.c	sdl: Don't set SDL_GL_DOUBLEBUFFER when the swap chain has no pref	2012-11-23 15:45:26 +00:00
cogl-winsys-stub-private.h	Make stub winsys into a proper winsys backend	2011-06-01 20:44:41 +01:00
cogl-winsys-stub.c	Don't use eglGetProcAddress to retrieve core functions	2012-08-06 14:27:45 +01:00
cogl-winsys-wgl-feature-functions.h	Add a WGL winsys	2011-05-10 17:58:41 +01:00
cogl-winsys-wgl-private.h	Add -Wmissing-declarations to maintainer flags and fix problems	2012-03-06 18:45:44 +00:00
cogl-winsys-wgl.c	Add conf vars to trick Cogl to think extensions are disabled	2012-08-06 18:51:33 +01:00
cogl-winsys.c	Switch use of primitive glib types to c99 equivalents	2012-08-06 14:27:39 +01:00