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annotate src/video/ataricommon/SDL_xbiosinterrupt_s.h @ 1240:3b8a43c428bb

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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 0b9b4bf3c1e7
children c9b51268668f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * Mouse vector
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30 *
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31 * Patrice Mandin
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32 */
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33
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34 #ifndef _SDL_XBIOSINTERRUPT_S_H_
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35 #define _SDL_XBIOSINTERRUPT_S_H_
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36
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37 #include <mint/osbind.h>
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38
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39 #include "SDL_types.h"
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40
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41 /* Variables */
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42
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43 extern Uint16 SDL_AtariXbios_mouseb; /* buttons */
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44 extern Sint16 SDL_AtariXbios_mousex; /* X relative motion */
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45 extern Sint16 SDL_AtariXbios_mousey; /* Y relative motion */
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46 extern Uint16 SDL_AtariXbios_joystick; /* Joystick */
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47
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48 /* Functions */
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49
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50 extern void SDL_AtariXbios_Install(_KBDVECS *kbdvecs,void *newmousevector,void *newjoystickvector);
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51 extern void SDL_AtariXbios_Restore(_KBDVECS *kbdvecs);
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52 extern void SDL_AtariXbios_MouseVector(void *buf);
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53 extern void SDL_AtariXbios_JoystickVector(void *buf);
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54
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55 #endif /* _SDL_XBIOSINTERRUPT_S_H_ */