Mercurial > sdl-ios-xcode
view src/video/maccommon/SDL_lowvideo.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 | 0801c9fdbdd6 |
| children | 782fd950bd46 a1b03ba2fcd0 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #ifndef _SDL_lowvideo_h #define _SDL_lowvideo_h #if defined(__APPLE__) && defined(__MACH__) #include <Carbon/Carbon.h> #elif TARGET_API_MAC_CARBON && (UNIVERSAL_INTERFACES_VERSION > 0x0335) #include <Carbon.h> #else #include <Quickdraw.h> #include <Palettes.h> #include <Menus.h> #include <DrawSprocket.h> #endif #if SDL_VIDEO_OPENGL typedef struct __AGLContextRec *AGLContext; #endif #include "SDL_video.h" #include "../SDL_sysvideo.h" /* Hidden "this" pointer for the video functions */ #define _THIS SDL_VideoDevice *this #if !TARGET_API_MAC_CARBON /* not available in OS X (or more accurately, Carbon) */ /* Global QuickDraw data */ extern QDGlobals *theQD; #endif /* Private display data */ struct SDL_PrivateVideoData { GDevice **SDL_Display; WindowRef SDL_Window; SDL_Rect **SDL_modelist; CTabHandle SDL_CTab; PaletteHandle SDL_CPal; #if TARGET_API_MAC_CARBON /* For entering and leaving fullscreen mode */ Ptr fullscreen_ctx; #endif /* The current window document style */ int current_style; /* Information about the last cursor position */ Point last_where; /* Information about the last keys down */ EventModifiers last_mods; KeyMap last_keys; /* A handle to the Apple Menu */ MenuRef apple_menu; /* Information used by DrawSprocket driver */ struct DSpInfo *dspinfo; #if SDL_VIDEO_OPENGL AGLContext appleGLContext; void *libraryHandle; #endif }; /* Old variable names */ #define SDL_Display (this->hidden->SDL_Display) #define SDL_Window (this->hidden->SDL_Window) #define SDL_modelist (this->hidden->SDL_modelist) #define SDL_CTab (this->hidden->SDL_CTab) #define SDL_CPal (this->hidden->SDL_CPal) #define fullscreen_ctx (this->hidden->fullscreen_ctx) #define current_style (this->hidden->current_style) #define last_where (this->hidden->last_where) #define last_mods (this->hidden->last_mods) #define last_keys (this->hidden->last_keys) #define apple_menu (this->hidden->apple_menu) #define glContext (this->hidden->appleGLContext) #endif /* _SDL_lowvideo_h */