Mercurial > sdl-ios-xcode
annotate src/video/wscons/SDL_wsconsvideo.h @ 1554:0ca607a5d173
Fixed bug #84
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 12:04:40 +0000 |
| parents | d910939febfa |
| children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
| rev | line source |
|---|---|
| 1187 | 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:
1187
diff
changeset
|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 1187 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1187
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 1187 | 7 License as published by the Free Software Foundation; either |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1187
diff
changeset
|
8 version 2.1 of the License, or (at your option) any later version. |
| 1187 | 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 | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1187
diff
changeset
|
13 Lesser General Public License for more details. |
| 1187 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1187
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:
1187
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:
1187
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 1187 | 18 |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
|
1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1361
diff
changeset
|
22 #include "SDL_config.h" |
| 1187 | 23 |
| 24 #ifndef _SDL_wsconsvideo_h | |
| 25 #define _SDL_wsconsvideo_h | |
| 26 | |
| 27 #include <sys/time.h> | |
| 28 #include <termios.h> | |
| 29 #include <dev/wscons/wsconsio.h> | |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
30 |
| 1187 | 31 #include "SDL_mouse.h" |
| 32 #include "SDL_mutex.h" | |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
33 #include "../SDL_sysvideo.h" |
| 1187 | 34 |
| 35 void WSCONS_ReportError(char *fmt, ...); | |
| 36 | |
| 37 /* Hidden "this" pointer for the video functions */ | |
| 38 #define _THIS SDL_VideoDevice *this | |
| 39 #define private (this->hidden) | |
| 40 | |
| 41 /* Private display data */ | |
| 42 | |
| 43 typedef void WSCONS_bitBlit(Uint8 *src_pos, | |
| 44 int srcRightDelta, // pixels, not bytes | |
| 45 int srcDownDelta, // pixels, not bytes | |
| 46 Uint8 *dst_pos, | |
| 47 int dst_linebytes, | |
| 48 int width, | |
| 49 int height); | |
| 50 | |
| 51 struct SDL_PrivateVideoData { | |
| 52 int fd; /* file descriptor of open device */ | |
| 53 struct wsdisplay_fbinfo info; /* frame buffer characteristics */ | |
| 54 int physlinebytes; /* number of bytes per row */ | |
| 55 int redMask, greenMask, blueMask; | |
| 56 | |
| 57 Uint8 *fbstart; /* These refer to the surface used, */ | |
| 58 int fblinebytes; /* physical frame buffer or shadow. */ | |
| 59 | |
| 60 size_t fbmem_len; | |
| 61 Uint8 *physmem; | |
| 62 Uint8 *shadowmem; | |
| 63 int rotate; | |
| 64 int shadowFB; /* Tells whether a shadow is being used. */ | |
| 65 | |
| 66 WSCONS_bitBlit *blitFunc; | |
| 67 | |
| 68 SDL_Rect *SDL_modelist[2]; | |
| 69 | |
| 70 unsigned int kbdType; | |
| 71 int did_save_tty; | |
| 72 struct termios saved_tty; | |
| 73 }; | |
| 74 | |
| 75 | |
| 76 #endif /* _SDL_wsconsvideo_h */ |