Mercurial > sdl-ios-xcode
annotate src/audio/windib/SDL_dibaudio.h @ 1240:3b8a43c428bb
From Bug #36:
There are a couple of issues with the selection of Altivec alpha-blitting
routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c.
1) There's no check for the presence of Altivec when checking if the
Blit32to565PixelAlphaAltivec() routine can be selected.
2) Altivec cannot be used in video memory, and there's no check if the
destination surface is a hardware surface. (Alpha-blitting to a hardware
surface with GPU support is a bad idea, but somebody's bound to do it anyway.)
Patch to fix these attached.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 08 Jan 2006 21:18:15 +0000 (2006-01-08) |
| parents | b8d311d90021 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
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 | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #ifndef _SDL_lowaudio_h | |
| 29 #define _SDL_lowaudio_h | |
| 30 | |
| 31 #include "SDL_sysaudio.h" | |
| 32 | |
| 33 /* Hidden "this" pointer for the video functions */ | |
| 34 #define _THIS SDL_AudioDevice *this | |
| 35 | |
| 36 #define NUM_BUFFERS 2 /* -- Don't lower this! */ | |
| 37 | |
| 38 struct SDL_PrivateAudioData { | |
| 39 HWAVEOUT sound; | |
| 40 HANDLE audio_sem; | |
| 41 Uint8 *mixbuf; /* The raw allocated mixing buffer */ | |
| 42 WAVEHDR wavebuf[NUM_BUFFERS]; /* Wave audio fragments */ | |
| 43 int next_buffer; | |
| 44 }; | |
| 45 | |
| 46 /* Old variable names */ | |
| 47 #define sound (this->hidden->sound) | |
| 48 #define audio_sem (this->hidden->audio_sem) | |
| 49 #define mixbuf (this->hidden->mixbuf) | |
| 50 #define wavebuf (this->hidden->wavebuf) | |
| 51 #define next_buffer (this->hidden->next_buffer) | |
| 52 | |
| 53 #endif /* _SDL_lowaudio_h */ |