Mercurial > sdl-ios-xcode
annotate src/video/bwindow/SDL_sysmouse.cc @ 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 | 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 #include <stdlib.h> | |
| 29 #include <string.h> | |
| 30 | |
| 31 #include <AppKit.h> | |
| 32 #include <GameKit.h> | |
| 33 | |
| 34 #include "SDL_error.h" | |
| 35 #include "SDL_BWin.h" | |
| 36 | |
| 37 extern "C" { | |
| 38 | |
| 39 #include "SDL_sysmouse_c.h" | |
| 40 | |
| 41 /* Convert bits to padded bytes */ | |
| 42 #define PADDED_BITS(bits) ((bits+7)/8) | |
| 43 | |
| 44 /* The implementation dependent data for the window manager cursor */ | |
| 45 struct WMcursor { | |
| 46 char *bits; | |
| 47 }; | |
| 48 | |
| 49 /* Can this be done in the BeOS? */ | |
| 50 WMcursor *BE_CreateWMCursor(_THIS, | |
| 51 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 52 { | |
| 53 WMcursor *cursor; | |
| 54 int allowed_x; | |
| 55 int allowed_y; | |
| 56 int run, pad, i; | |
| 57 char *cptr; | |
| 58 | |
| 59 allowed_x = 16; /* BeOS limitation */ | |
| 60 allowed_y = 16; /* BeOS limitation */ | |
| 61 if ( (w > allowed_x) || (h > allowed_y) ) { | |
| 62 SDL_SetError("Only cursors of dimension (%dx%d) are allowed", | |
| 63 allowed_x, allowed_y); | |
| 64 return(NULL); | |
| 65 } | |
| 66 | |
| 67 /* Allocate the cursor */ | |
| 68 cursor = (WMcursor *)malloc(sizeof(WMcursor)); | |
| 69 if ( cursor == NULL ) { | |
| 70 SDL_OutOfMemory(); | |
| 71 return(NULL); | |
| 72 } | |
| 73 cursor->bits = (char *)malloc(4+2*((allowed_x/8)*allowed_y)); | |
| 74 if ( cursor->bits == NULL ) { | |
| 75 free(cursor); | |
| 76 SDL_OutOfMemory(); | |
| 77 return(NULL); | |
| 78 } | |
| 79 cursor->bits[0] = allowed_y; /* Size of the cursor */ | |
| 80 cursor->bits[1] = 1; /* Bit depth of cursor */ | |
| 81 cursor->bits[2] = hot_y; | |
| 82 cursor->bits[3] = hot_x; | |
| 83 cptr = &cursor->bits[4]; | |
| 84 | |
| 85 /* Pad out to the normal cursor size */ | |
| 86 run = PADDED_BITS(w); | |
| 87 pad = PADDED_BITS(allowed_x)-run; | |
| 88 for ( i=0; i<h; ++i ) { | |
| 89 memcpy(cptr, data, run); | |
| 90 memset(cptr+run, 0, pad); | |
| 91 data += run; | |
| 92 cptr += (run+pad); | |
| 93 } | |
| 94 for ( ; i<allowed_y; ++i ) { | |
| 95 memset(cptr, 0, run+pad); | |
| 96 cptr += (run+pad); | |
| 97 } | |
| 98 for ( i=0; i<h; ++i ) { | |
| 99 /* FIXME: The mask should be OR'd with the data to turn | |
| 100 inverted color pixels black, since inverted color pixels | |
| 101 aren't supported under BeOS. | |
| 102 */ | |
| 103 memcpy(cptr, mask, run); | |
| 104 memset(cptr+run, 0, pad); | |
| 105 mask += run; | |
| 106 cptr += (run+pad); | |
| 107 } | |
| 108 for ( ; i<allowed_y; ++i ) { | |
| 109 memset(cptr, 0, run+pad); | |
| 110 cptr += (run+pad); | |
| 111 } | |
| 112 return(cursor); | |
| 113 } | |
| 114 | |
| 115 int BE_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 116 { | |
| 117 if ( be_app->Lock() ) { | |
| 118 if ( cursor == NULL ) { | |
| 119 if ( SDL_BlankCursor != NULL ) { | |
| 120 be_app->SetCursor(SDL_BlankCursor->bits); | |
| 121 } | |
| 122 } else { | |
| 123 be_app->SetCursor(cursor->bits); | |
| 124 } | |
| 125 be_app->Unlock(); | |
| 126 } | |
| 127 return(1); | |
| 128 } | |
| 129 | |
| 130 void BE_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 131 { | |
| 132 free(cursor->bits); | |
| 133 free(cursor); | |
| 134 } | |
| 135 | |
| 136 /* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */ | |
| 137 void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 138 { | |
| 139 BPoint pt(x, y); | |
| 140 SDL_Win->Lock(); | |
| 141 SDL_Win->ConvertToScreen(&pt); | |
| 142 SDL_Win->Unlock(); | |
| 143 set_mouse_position((int32)pt.x, (int32)pt.y); | |
| 144 } | |
| 145 | |
| 146 }; /* Extern C */ |