Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11gl_c.h @ 1555:780fd5b61df1
Fixed bug #89
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Mar 2006 12:05:16 +0000 |
| parents | d910939febfa |
| children | 96c2f89cc7e1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1191
diff
changeset
|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1191
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
1312
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1191
diff
changeset
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1191
diff
changeset
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1191
diff
changeset
|
15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1191
diff
changeset
|
16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1191
diff
changeset
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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20 slouken@libsdl.org |
| 0 | 21 */ |
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1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
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22 #include "SDL_config.h" |
| 0 | 23 |
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1361
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New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1315
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24 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 25 #include <GL/glx.h> |
|
1191
2bd4cec0de63
Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
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26 #include "SDL_loadso.h" |
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110
7edee9f0f2cc
SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
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27 #endif |
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1191
2bd4cec0de63
Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
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28 |
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1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1315
diff
changeset
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29 #include "../SDL_sysvideo.h" |
| 0 | 30 |
| 31 struct SDL_PrivateGLData { | |
| 32 int gl_active; /* to stop switching drivers while we have a valid context */ | |
| 33 | |
|
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New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1315
diff
changeset
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34 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 35 GLXContext glx_context; /* Current GL context */ |
| 36 XVisualInfo* glx_visualinfo; /* XVisualInfo* returned by glXChooseVisual */ | |
| 37 | |
| 38 void * (*glXGetProcAddress)(const GLubyte *procName); | |
| 39 | |
| 40 XVisualInfo* (*glXChooseVisual) | |
| 41 ( Display* dpy, | |
| 42 int screen, | |
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1315
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Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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43 int* attribList ); |
| 0 | 44 |
| 45 GLXContext (*glXCreateContext) | |
| 46 ( Display* dpy, | |
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Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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47 XVisualInfo* vis, |
| 0 | 48 GLXContext shareList, |
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1315
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Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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49 Bool direct ); |
| 0 | 50 |
| 51 void (*glXDestroyContext) | |
| 52 ( Display* dpy, | |
| 53 GLXContext ctx ); | |
| 54 | |
| 55 Bool (*glXMakeCurrent) | |
| 56 ( Display* dpy, | |
| 57 GLXDrawable drawable, | |
| 58 GLXContext ctx ); | |
| 59 | |
| 60 void (*glXSwapBuffers) | |
| 61 ( Display* dpy, | |
| 62 GLXDrawable drawable ); | |
| 63 | |
| 64 int (*glXGetConfig) | |
| 65 ( Display* dpy, | |
| 66 XVisualInfo* visual_info, | |
| 67 int attrib, | |
| 68 int* value ); | |
| 69 | |
|
646
0f2029a70548
Fixed incorrect prototype for glXQueryExtensionsString()
Sam Lantinga <slouken@libsdl.org>
parents:
638
diff
changeset
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70 const char *(*glXQueryExtensionsString) |
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638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
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71 ( Display* dpy, |
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1315
e94b0d7c33bc
Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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72 int screen ); |
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638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
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73 |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
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74 |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1315
diff
changeset
|
75 #endif /* SDL_VIDEO_OPENGL_GLX */ |
| 0 | 76 }; |
| 77 | |
| 78 /* Old variable names */ | |
| 79 #define gl_active (this->gl_data->gl_active) | |
| 80 #define glx_context (this->gl_data->glx_context) | |
| 81 #define glx_visualinfo (this->gl_data->glx_visualinfo) | |
| 82 | |
| 83 /* OpenGL functions */ | |
| 84 extern XVisualInfo *X11_GL_GetVisual(_THIS); | |
| 85 extern int X11_GL_CreateWindow(_THIS, int w, int h); | |
| 86 extern int X11_GL_CreateContext(_THIS); | |
| 87 extern void X11_GL_Shutdown(_THIS); | |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1315
diff
changeset
|
88 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 89 extern int X11_GL_MakeCurrent(_THIS); |
| 90 extern int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value); | |
| 91 extern void X11_GL_SwapBuffers(_THIS); | |
| 92 extern int X11_GL_LoadLibrary(_THIS, const char* path); | |
| 93 extern void *X11_GL_GetProcAddress(_THIS, const char* proc); | |
| 94 #endif | |
| 95 extern void X11_GL_UnloadLibrary(_THIS); | |
| 96 |