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https://github.com/Relintai/sdl2_frt.git
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ece8d2bb05
- Don't create a temporary context first; this was probably due to Windows needing one to get the address of wglCreateContextAttribsARB(), but that's a unique quirk of WGL, and doesn't apply to glX. The glX spec explicitly says you have to get a function pointer that works with any context from glXGetProcAddress(), including when no context exists. - Properly check for the GLX_ARB_create_context instead of just looking for a non-NULL glXCreateContextAttribsARB()...some implementations, like Mesa, never return NULL for function lookups (Mesa returns pointers into a jump table that is filled out when the GL is initialized; since you can look up functions before you have a valid context, it can't definitely say a function isn't valid at that point).
73 lines
2.8 KiB
C
73 lines
2.8 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#ifndef _SDL_x11opengl_h
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#define _SDL_x11opengl_h
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#if SDL_VIDEO_OPENGL_GLX
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#include "SDL_opengl.h"
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#include <GL/glx.h>
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struct SDL_GLDriverData
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{
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int errorBase, eventBase;
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SDL_bool HAS_GLX_EXT_visual_rating;
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SDL_bool HAS_GLX_EXT_visual_info;
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SDL_bool HAS_GLX_EXT_swap_control_tear;
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SDL_bool HAS_GLX_EXT_create_context_es2_profile;
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Bool (*glXQueryExtension) (Display*,int*,int*);
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void *(*glXGetProcAddress) (const GLubyte*);
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XVisualInfo *(*glXChooseVisual) (Display*,int,int*);
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GLXContext (*glXCreateContext) (Display*,XVisualInfo*,GLXContext,Bool);
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GLXContext (*glXCreateContextAttribsARB) (Display*,GLXFBConfig,GLXContext,Bool,const int *);
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GLXFBConfig *(*glXChooseFBConfig) (Display*,int,const int *,int *);
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void (*glXDestroyContext) (Display*, GLXContext);
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Bool(*glXMakeCurrent) (Display*,GLXDrawable,GLXContext);
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void (*glXSwapBuffers) (Display*, GLXDrawable);
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void (*glXQueryDrawable) (Display*,GLXDrawable,int,unsigned int*);
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void (*glXSwapIntervalEXT) (Display*,GLXDrawable,int);
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int (*glXSwapIntervalSGI) (int);
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int (*glXSwapIntervalMESA) (int);
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int (*glXGetSwapIntervalMESA) (void);
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};
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/* OpenGL functions */
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extern int X11_GL_LoadLibrary(_THIS, const char *path);
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extern void *X11_GL_GetProcAddress(_THIS, const char *proc);
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extern void X11_GL_UnloadLibrary(_THIS);
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extern XVisualInfo *X11_GL_GetVisual(_THIS, Display * display, int screen);
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extern SDL_GLContext X11_GL_CreateContext(_THIS, SDL_Window * window);
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extern int X11_GL_MakeCurrent(_THIS, SDL_Window * window,
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SDL_GLContext context);
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extern int X11_GL_SetSwapInterval(_THIS, int interval);
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extern int X11_GL_GetSwapInterval(_THIS);
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extern void X11_GL_SwapWindow(_THIS, SDL_Window * window);
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extern void X11_GL_DeleteContext(_THIS, SDL_GLContext context);
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#endif /* SDL_VIDEO_OPENGL_GLX */
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#endif /* _SDL_x11opengl_h */
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/* vi: set ts=4 sw=4 expandtab: */
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