Mercurial > sdl-ios-xcode

annotate src/video/xbios/SDL_xbios_sb3.c @ 1085:49d154d0c56e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
4bits screen also has hardware palette
author Patrice Mandin <patmandin@gmail.com>
date Thu, 30 Jun 2005 12:02:25 +0000
parents fba6b67b4d60
children 3692456e7b0f
rev   line source
1040
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
1 /*
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
3 Copyright (C) 1997-2004 Sam Lantinga
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
4
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
6 modify it under the terms of the GNU Library General Public
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
8 version 2 of the License, or (at your option) any later version.
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
9
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
13 Library General Public License for more details.
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
14
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
15 You should have received a copy of the GNU Library General Public
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
16 License along with this library; if not, write to the Free
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
18
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
19 Sam Lantinga
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
20 slouken@libsdl.org
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
21 */
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
22
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
23 /*
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
24 ScreenBlaster 3 functions
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
25
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
26 Patrice Mandin
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
27 */
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
28
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
29 /*--- Includes ---*/
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
30
1064
fba6b67b4d60 Add Centscreen extended modes support
Patrice Mandin <patmandin@gmail.com>
parents: 1042
diff changeset
31 #include <stdlib.h>
fba6b67b4d60 Add Centscreen extended modes support
Patrice Mandin <patmandin@gmail.com>
parents: 1042
diff changeset
32
1040
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
33 #include "SDL_xbios.h"
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
34 #include "SDL_xbios_sb3.h"
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
35
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
36 /*--- Defines ---*/
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
37
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
38 const int SDL_XBIOS_scpn_planes_device[]={
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
39 SCPN_DEV_1BPP,
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
40 SCPN_DEV_4BPP,
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
41 SCPN_DEV_8BPP,
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
42 SCPN_DEV_16BPP,
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
43 SCPN_DEV_2BPP,
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
44 SCPN_DEV_4BPP,
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
45 SCPN_DEV_1BPP
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
46 };
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
47
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
48 /*--- Functions ---*/
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
49
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
50 int SDL_XBIOS_SB3Usable(scpn_cookie_t *cookie_scpn)
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
51 {
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
52 scpn_screeninfo_t *scrinfo;
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
53 int bpp;
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
54
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
55 /* Check if current SB3 mode is usable, i.e. 8 or 16bpp */
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
56 scrinfo = cookie_scpn->screen_info;
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
57 bpp = 1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]);
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
58
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
59 if ((bpp==8) || (bpp==16)) {
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
60 return 1;
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
61 }
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
62
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
63 return 0;
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
64 }
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
65
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
66 void SDL_XBIOS_SB3Init(_THIS, scpn_cookie_t *cookie_scpn)
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
67 {
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
68 scpn_screeninfo_t *scrinfo;
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
69
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
70 /* SB3 prevent changing video modes, we can only use current one */
1042
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
71 if (XBIOS_modelist) {
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
72 free(XBIOS_modelist);
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
73 XBIOS_nummodes = 0;
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
74 XBIOS_modelist = NULL;
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
75 }
1040
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
76
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
77 scrinfo = cookie_scpn->screen_info;
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
78 scrinfo->h_pos = scrinfo->v_pos = 0;
1042
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
79
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
80 SDL_XBIOS_AddMode(this,
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
81 -1,
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
82 scrinfo->virtual_width, scrinfo->virtual_height,
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
83 1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]),
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
84 SDL_FALSE
0e7218843cfb Dynamically create list of video modes, easier to add new ones
Patrice Mandin <patmandin@gmail.com>
parents: 1040
diff changeset
85 );
1040
c6ed27c7d47d Preliminary support for Blowup and Screen Blaster 3 extensions on Atari Falcon 030
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
86 }