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Date: Sun, 22 Mar 2009 12:52:29 +0000 From: Luke Benstead Subject: OpenGL 3.0 Context Creation I've attached a patch which implements OpenGL 3.x context creation on the latest SVN. I've added two options to SDL_GL_SetAttribute, these are SDL_GL_CONTEXT_MAJOR_VERSION and SDL_GL_CONTEXT_MINOR_VERSION. These default to 2 and 1 respectively. If the major version is less than 3 then the current context creation method is used, otherwise the appropriate new context creation function is called (depending on the platform). Sample code: if (SDL_Init(SDL_INIT_VIDEO) != 0) { printf("Unable to initialize SDL: %s\n", SDL_GetError()); return 1; } SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); //Without these 2 lines, SDL will create a GL 2.x context SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0); SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); SDL_Surface* screen = SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL | SDL_FULLSCREEN ); I've implemented context creation on both Win32 and X and run basic tests on both. This patch doesn't provide access to all the options allowed by the new context creation (e.g. shared contexts, forward compatible contexts) but they can be added pretty easily.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 24 Mar 2009 10:43:53 +0000
parents 4ccdf20bad6f
children 3fde47894732
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1.3 release checklist:
 * Add higher precision timers for profiling
 * Implement YUV texture support
   - in progress, software support is done, Ryan is working on OpenGL shaders
 * Implement desktop video mode change notification?
 * Add OpenGL 3.0 context support
 * Finish multiple display support
 * Open windows on display that is selected when creating a window
 * Create testing plan - becoming more and more important...
   - unit tests for each feature and combination with expected output
     and actual output comparison.
 * Public license for SDL_compat.c, tests, and SDL_main*
 * Verify mouse grab support
 * Properly handle mouse grab with Vista DPI scaling
 * Make sure the mouse is where it's supposed to be when un-grabbed
 * Plan how to handle events on foreign windows
 * Add keyboard enumeration / name query API
 * Implement NET_WM_PING and NET_WM_PID/WM_CLIENT_MACHINE (?)
   - http://standards.freedesktop.org/wm-spec/wm-spec-1.3.html#KILLINGWINDOWS
 * Add a timeout parameter for SDL_WaitEvent() (?)
   - http://lists.libsdl.org/pipermail/sdl-libsdl.org/2008-May/thread.html#65067
 * Implement key repeat at the driver level
 * Add name -> keysym and name -> scancode lookup functions
 * Fix building haptic system on win32
 * Add always on top window styles
 * Add video modes that have an alpha channel?
 * Implement SDL_RenderReadPixels() for screenshots?

Wish list for the 1.3 development branch:
http://bugzilla.libsdl.org/

 * Add a way to register custom events
 * DirectInput joystick support needs to be implemented
 * Explicit vertical retrace wait (maybe separate from SDL_Flip?)
 * Shaped windows, windows without borders
 * Multiple display support
 * Add a timestamp to events
 * Add audio input API
 * Add modifier state to key and button events

In the jump from 1.2 to 1.3, we should change the SDL_Rect members to
int and evaluate all the rest of the datatypes.  This is the only place
we should do it though, since the 1.2 series should not break binary
compatibility in this way.

Requests:
 * PCM and CDROM volume control (deprecated, but possible)