From michalziulek@gmail.com 2009-03-28 07:43:34 (-) [reply]
There is a bug in OpenGL 3.x context creation code.
Function glXGetProcAddress is used directly where it should be:
_this->gl_data->glXGetProcAddress. I have attached patch which fixes this on
x11 and win32. Thanks.
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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.
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Make sure OpenGL library is loaded before working with OpenGL windows,
even those created with SDL_CreateWindowFrom()
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Port SDL 1.3 to the Nintendo DS
by Darren Alton, mentored by Sam Lantinga
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If the ARB pixel format selection fails, use a version of ChoosePixelFormat() that doesn't return a less capable format than was requested.
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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402422
Use GL_ARB_texture_rectangle in the OpenGL renderer, if supported.
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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401971
Fixed slowdown enumerating display modes, which was hosing OpenGL as well...
Removed SDL_ from the render driver prefixes
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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401958
