Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.h @ 1585:980d2a0dc2a3
Date: Tue, 4 Mar 2003 15:05:31 -0800
From: "Jim"
Subject: [SDL] Frame Buffer patches...
Okay I'm new at patch generation - so please tell me if there's a better way
I could have done this.
Attached are two patch files generated with 'cvs diff -u'
SDL-fb-open-lock.patch applies to SDL_fbvideo.c
Modifies the open loop to check /dev/fb/0 found on devfs...
Modifies the lock code to return failure if the current virtual terminal
is not the one opened for frame buffer writing...
Lock would hang forever if switched away (ctrl-alt-F1) ...
SDL-fb-mousedrv-screensave.patch applies to SDL_fbevents.c
Switches default mouse mode based on SDL_MOUSEDRV - currently only
accepts PS2 - otherwise default is MS Mouse.
When the screen is switched - exisiting code (wrapped in ifdef
SAVE_SCREEN_COTENTS) would save the wrong bit of the screen....
( I run frame buffer 1600x1200, the size I requested was 800x600 - the
save would save the top 800 lines (non biased) and restore them... Adding
screen->offset fixed that )
However, if that option is not set, then a call to SDL_UpdateRect (full
screen) is made. (which may have had it's contents changed since the screen
is not entirely locked because of lock-failure patch)
Jim
[patches slightly tweaked for SDL 1.2.10]
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 22 Mar 2006 07:48:22 +0000 |
| parents | d910939febfa |
| children | 14717b52abc0 45669d4efd02 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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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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Sam Lantinga <slouken@libsdl.org>
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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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:
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diff
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16 License along with this library; if not, write to the Free Software |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
252
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20 slouken@libsdl.org |
| 0 | 21 */ |
|
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #ifndef _SDL_dgavideo_h | |
| 25 #define _SDL_dgavideo_h | |
| 26 | |
| 27 #include <X11/Xlib.h> | |
| 28 | |
| 29 #include "SDL_mouse.h" | |
| 30 #include "SDL_mutex.h" | |
|
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New configure-based build system. Still work in progress, but much improved
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31 #include "../SDL_sysvideo.h" |
| 0 | 32 |
| 33 /* Hidden "this" pointer for the video functions */ | |
| 34 #define _THIS SDL_VideoDevice *this | |
| 35 | |
|
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36 /* Define this if you need the DGA driver to be thread-safe */ |
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37 #define LOCK_DGA_DISPLAY |
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38 #ifdef LOCK_DGA_DISPLAY |
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39 #define LOCK_DISPLAY() SDL_mutexP(event_lock) |
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40 #define UNLOCK_DISPLAY() SDL_mutexV(event_lock) |
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41 #else |
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42 #define LOCK_DISPLAY() |
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43 #define UNLOCK_DISPLAY() |
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44 #endif |
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45 |
| 0 | 46 |
| 47 /* This is the structure we use to keep track of video memory */ | |
| 48 typedef struct vidmem_bucket { | |
| 49 struct vidmem_bucket *prev; | |
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50 int used; |
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51 int dirty; |
| 0 | 52 Uint8 *base; |
| 53 unsigned int size; | |
| 54 struct vidmem_bucket *next; | |
| 55 } vidmem_bucket; | |
| 56 | |
| 57 /* Private display data */ | |
| 58 struct SDL_PrivateVideoData { | |
| 59 Display *DGA_Display; | |
| 60 Colormap DGA_colormap; | |
| 61 int visualClass; | |
| 62 | |
| 63 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ | |
| 64 int SDL_nummodes[NUM_MODELISTS]; | |
| 65 SDL_Rect **SDL_modelist[NUM_MODELISTS]; | |
| 66 | |
| 67 /* Information for the video surface */ | |
| 68 Uint8 *memory_base; | |
| 69 int memory_pitch; | |
| 70 SDL_mutex *hw_lock; | |
| 71 int sync_needed; | |
| 72 int was_flipped; | |
| 73 | |
| 74 /* Information for hardware surfaces */ | |
| 75 vidmem_bucket surfaces; | |
| 76 int surfaces_memtotal; | |
| 77 int surfaces_memleft; | |
| 78 | |
| 79 /* Information for double-buffering */ | |
| 80 int flip_page; | |
| 81 int flip_yoffset[2]; | |
| 82 Uint8 *flip_address[2]; | |
| 83 | |
| 84 /* Used to handle DGA events */ | |
| 85 int event_base; | |
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86 #ifdef LOCK_DGA_DISPLAY |
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87 SDL_mutex *event_lock; |
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88 #endif |
| 0 | 89 }; |
| 90 /* Old variable names */ | |
| 91 #define DGA_Display (this->hidden->DGA_Display) | |
| 92 #define DGA_Screen DefaultScreen(DGA_Display) | |
| 93 #define DGA_colormap (this->hidden->DGA_colormap) | |
| 94 #define DGA_visualClass (this->hidden->visualClass) | |
| 95 #define memory_base (this->hidden->memory_base) | |
| 96 #define memory_pitch (this->hidden->memory_pitch) | |
| 97 #define flip_page (this->hidden->flip_page) | |
| 98 #define flip_yoffset (this->hidden->flip_yoffset) | |
| 99 #define flip_address (this->hidden->flip_address) | |
| 100 #define sync_needed (this->hidden->sync_needed) | |
| 101 #define was_flipped (this->hidden->was_flipped) | |
| 102 #define SDL_nummodes (this->hidden->SDL_nummodes) | |
| 103 #define SDL_modelist (this->hidden->SDL_modelist) | |
| 104 #define surfaces (this->hidden->surfaces) | |
| 105 #define surfaces_memtotal (this->hidden->surfaces_memtotal) | |
| 106 #define surfaces_memleft (this->hidden->surfaces_memleft) | |
| 107 #define hw_lock (this->hidden->hw_lock) | |
| 108 #define DGA_event_base (this->hidden->event_base) | |
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109 #define event_lock (this->hidden->event_lock) |
| 0 | 110 |
| 111 #endif /* _SDL_dgavideo_h */ |