Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11gl_c.h @ 1257:448a9a64537b
[PATCH] SDL_GetVideoMode() does not find best mode, part 2
Following commit 1.51, I come accross a problem when SDL must choose between
several video modes that could suit the one asked.
If I ask 320x240 with this list:
768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200
The smallest selectables modes are 384x240 and 320x400. And SDL choose the later
in this list, but 384x240 is more suitable. So I added a check to compare
the pixel count (surface) of modes, and select the one which has the smallest
pixel count.
In my example, 384x240 has 92160 pixels, and 320x400 has 128000 pixels. So now
SDL will choose 384x240 for the asked 320x240 mode.
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Thu, 19 Jan 2006 21:28:52 +0000 |
| parents | 2bd4cec0de63 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the source with the correct e-mail address
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
|
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28 #ifdef HAVE_OPENGL_X11 |
| 0 | 29 #include <GL/glx.h> |
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30 #ifdef USE_DLOPEN |
| 0 | 31 #include <dlfcn.h> |
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32 #else |
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33 #include "SDL_loadso.h" |
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34 #endif |
| 0 | 35 #endif |
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36 |
| 0 | 37 #include "SDL_sysvideo.h" |
| 38 | |
| 39 struct SDL_PrivateGLData { | |
| 40 int gl_active; /* to stop switching drivers while we have a valid context */ | |
| 41 | |
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Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents:
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42 #ifdef HAVE_OPENGL_X11 |
| 0 | 43 GLXContext glx_context; /* Current GL context */ |
| 44 XVisualInfo* glx_visualinfo; /* XVisualInfo* returned by glXChooseVisual */ | |
| 45 | |
| 46 void * (*glXGetProcAddress)(const GLubyte *procName); | |
| 47 | |
| 48 XVisualInfo* (*glXChooseVisual) | |
| 49 ( Display* dpy, | |
| 50 int screen, | |
| 51 int* attribList ); | |
| 52 | |
| 53 GLXContext (*glXCreateContext) | |
| 54 ( Display* dpy, | |
| 55 XVisualInfo* vis, | |
| 56 GLXContext shareList, | |
| 57 Bool direct ); | |
| 58 | |
| 59 void (*glXDestroyContext) | |
| 60 ( Display* dpy, | |
| 61 GLXContext ctx ); | |
| 62 | |
| 63 Bool (*glXMakeCurrent) | |
| 64 ( Display* dpy, | |
| 65 GLXDrawable drawable, | |
| 66 GLXContext ctx ); | |
| 67 | |
| 68 void (*glXSwapBuffers) | |
| 69 ( Display* dpy, | |
| 70 GLXDrawable drawable ); | |
| 71 | |
| 72 int (*glXGetConfig) | |
| 73 ( Display* dpy, | |
| 74 XVisualInfo* visual_info, | |
| 75 int attrib, | |
| 76 int* value ); | |
| 77 | |
| 78 void (*glXReleaseBuffersMESA) | |
| 79 ( Display* dpy, | |
| 80 GLXDrawable drawable ); | |
| 81 | |
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82 const char *(*glXQueryExtensionsString) |
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83 ( Display* dpy, |
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84 int screen); |
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85 |
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86 |
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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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87 #endif /* HAVE_OPENGL_X11 */ |
| 0 | 88 }; |
| 89 | |
| 90 /* Old variable names */ | |
| 91 #define gl_active (this->gl_data->gl_active) | |
| 92 #define glx_context (this->gl_data->glx_context) | |
| 93 #define glx_visualinfo (this->gl_data->glx_visualinfo) | |
| 94 | |
| 95 /* OpenGL functions */ | |
| 96 extern XVisualInfo *X11_GL_GetVisual(_THIS); | |
| 97 extern int X11_GL_CreateWindow(_THIS, int w, int h); | |
| 98 extern int X11_GL_CreateContext(_THIS); | |
| 99 extern void X11_GL_Shutdown(_THIS); | |
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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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100 #ifdef HAVE_OPENGL_X11 |
| 0 | 101 extern int X11_GL_MakeCurrent(_THIS); |
| 102 extern int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value); | |
| 103 extern void X11_GL_SwapBuffers(_THIS); | |
| 104 extern int X11_GL_LoadLibrary(_THIS, const char* path); | |
| 105 extern void *X11_GL_GetProcAddress(_THIS, const char* proc); | |
| 106 #endif | |
| 107 extern void X11_GL_UnloadLibrary(_THIS); | |
| 108 |