Mercurial > sdl-ios-xcode
annotate src/video/bwindow/SDL_lowvideo.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 |
| parents | 3bd4d7a1ee04 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
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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 | |
|
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #ifndef _SDL_lowvideo_h | |
| 29 #define _SDL_lowvideo_h | |
| 30 | |
|
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te: Mon, 15 Dec 2003 08:25:14 -0800 PST
Sam Lantinga <slouken@libsdl.org>
parents:
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31 #include "SDL_BWin.h" |
| 0 | 32 #include "SDL_mouse.h" |
| 33 #include "SDL_sysvideo.h" | |
| 34 | |
| 35 /* Hidden "this" pointer for the video functions */ | |
| 36 #define _THIS SDL_VideoDevice *_this | |
| 37 | |
| 38 /* Private display data */ | |
| 39 struct SDL_PrivateVideoData { | |
| 40 /* The main window */ | |
| 41 SDL_BWin *SDL_Win; | |
| 42 | |
| 43 /* The fullscreen mode list */ | |
| 44 display_mode saved_mode; | |
| 45 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ | |
| 46 int SDL_nummodes[NUM_MODELISTS]; | |
| 47 SDL_Rect **SDL_modelist[NUM_MODELISTS]; | |
| 48 | |
| 49 /* A completely clear cursor */ | |
| 50 WMcursor *BlankCursor; | |
| 51 | |
|
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te: Mon, 15 Dec 2003 08:25:14 -0800 PST
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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52 SDL_Overlay *overlay; |
| 0 | 53 }; |
| 54 /* Old variable names */ | |
| 55 #define SDL_Win (_this->hidden->SDL_Win) | |
| 56 #define saved_mode (_this->hidden->saved_mode) | |
| 57 #define SDL_nummodes (_this->hidden->SDL_nummodes) | |
| 58 #define SDL_modelist (_this->hidden->SDL_modelist) | |
| 59 #define SDL_BlankCursor (_this->hidden->BlankCursor) | |
|
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te: Mon, 15 Dec 2003 08:25:14 -0800 PST
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
60 #define current_overlay (_this->hidden->overlay) |
| 0 | 61 |
| 62 #endif /* _SDL_lowvideo_h */ |