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annotate src/video/dc/SDL_dcevents.c @ 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 ba2d708ee116
children c9b51268668f
rev   line source
509
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1 /*
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2 SDL - Simple DirectMedia Layer
769
b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga
509
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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 BERO
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20 bero@geocities.co.jp
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21
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22 based on SDL_nullevents.c by
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23
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24 Sam Lantinga
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25 slouken@libsdl.org
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26 */
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27
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28 #ifdef SAVE_RCSID
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29 static char rcsid =
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30 "@(#) $Id$";
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31 #endif
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32
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33 #include "SDL.h"
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34 #include "SDL_sysevents.h"
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35 #include "SDL_events_c.h"
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36 #include "SDL_dcvideo.h"
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37 #include "SDL_dcevents_c.h"
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38
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39 #include <dc/maple.h>
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40 #include <dc/maple/mouse.h>
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41 #include <dc/maple/keyboard.h>
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42
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43 const static unsigned short sdl_key[]= {
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44 /*0*/ 0, 0, 0, 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
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45 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
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46 'u', 'v', 'w', 'x', 'y', 'z',
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47 /*1e*/ '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
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48 /*28*/ SDLK_RETURN, SDLK_ESCAPE, SDLK_BACKSPACE, SDLK_TAB, SDLK_SPACE, SDLK_MINUS, SDLK_PLUS, SDLK_LEFTBRACKET,
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49 SDLK_RIGHTBRACKET, SDLK_BACKSLASH , 0, SDLK_SEMICOLON, SDLK_QUOTE,
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50 /*35*/ '~', SDLK_COMMA, SDLK_PERIOD, SDLK_SLASH, SDLK_CAPSLOCK,
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51 SDLK_F1, SDLK_F2, SDLK_F3, SDLK_F4, SDLK_F5, SDLK_F6, SDLK_F7, SDLK_F8, SDLK_F9, SDLK_F10, SDLK_F11, SDLK_F12,
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52 /*46*/ SDLK_PRINT, SDLK_SCROLLOCK, SDLK_PAUSE, SDLK_INSERT, SDLK_HOME, SDLK_PAGEUP, SDLK_DELETE, SDLK_END, SDLK_PAGEDOWN, SDLK_RIGHT, SDLK_LEFT, SDLK_DOWN, SDLK_UP,
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53 /*53*/ SDLK_NUMLOCK, SDLK_KP_DIVIDE, SDLK_KP_MULTIPLY, SDLK_KP_MINUS, SDLK_KP_PLUS, SDLK_KP_ENTER,
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54 SDLK_KP1, SDLK_KP2, SDLK_KP3, SDLK_KP4, SDLK_KP5, SDLK_KP6,
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55 /*5f*/ SDLK_KP7, SDLK_KP8, SDLK_KP9, SDLK_KP0, SDLK_KP_PERIOD, 0 /* S3 */
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56 };
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57
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58 const static unsigned short sdl_shift[] = {
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59 SDLK_LCTRL,SDLK_LSHIFT,SDLK_LALT,0 /* S1 */,
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60 SDLK_RCTRL,SDLK_RSHIFT,SDLK_RALT,0 /* S2 */,
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61 };
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62
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63 #define MOUSE_WHEELUP (1<<4)
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64 #define MOUSE_WHEELDOWN (1<<5)
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65
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66 static void mouse_update(void)
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67 {
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68 const static char sdl_mousebtn[] = {
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69 MOUSE_LEFTBUTTON,
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70 MOUSE_RIGHTBUTTON,
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71 MOUSE_SIDEBUTTON,
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72 MOUSE_WHEELUP,
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73 MOUSE_WHEELDOWN
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74 };
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75
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76 uint8 addr;
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77 mouse_cond_t cond;
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78
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79 static int prev_buttons;
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80 int buttons,changed;
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81 int i;
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82
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83 if ((addr = maple_first_mouse())==0 || mouse_get_cond(addr, &cond)<0) return;
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84
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85 buttons = cond.buttons^0xff;
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86 if (cond.dz<0) buttons|=MOUSE_WHEELUP;
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87 if (cond.dz>0) buttons|=MOUSE_WHEELDOWN;
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88
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89 if (cond.dx||cond.dy) SDL_PrivateMouseMotion(0,1,cond.dx,cond.dy);
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90
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91 changed = buttons^prev_buttons;
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92 for(i=0;i<sizeof(sdl_mousebtn);i++) {
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93 if (changed & sdl_mousebtn[i]) {
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94 SDL_PrivateMouseButton((buttons & sdl_mousebtn[i])?SDL_PRESSED:SDL_RELEASED,i,0,0);
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95 }
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96 }
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97 prev_buttons = buttons;
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98 }
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99
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100 static void keyboard_update(void)
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101 {
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102 static kbd_state_t old_state;
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103 static uint8 old_addr;
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104
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105 kbd_state_t *state;
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106 uint8 addr;
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107 int port,unit;
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108
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109 int shiftkeys;
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110 SDL_keysym keysym;
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111
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112 int i;
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113
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114 addr = maple_first_kb();
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115
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116 if (addr==0) return;
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117
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118 if (addr!=old_addr) {
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119 old_addr = addr;
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120 memset(&old_state,0,sizeof(old_state));
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121 }
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122
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123 maple_raddr(addr,&port,&unit);
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124
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125 state = kbd_get_state(port,unit);
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126 if (!state) return;
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127
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128 shiftkeys = state->shift_keys ^ old_state.shift_keys;
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129 for(i=0;i<sizeof(sdl_shift);i++) {
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130 if ((shiftkeys>>i)&1) {
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131 keysym.sym = sdl_shift[i];
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132 SDL_PrivateKeyboard(((state->shift_keys>>i)&1)?SDL_PRESSED:SDL_RELEASED,&keysym);
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133 }
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134 }
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135
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136 for(i=0;i<sizeof(sdl_key);i++) {
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137 if (state->matrix[i]!=old_state.matrix[i]) {
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138 int key = sdl_key[i];
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139 if (key) {
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140 keysym.sym = key;
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141 SDL_PrivateKeyboard(state->matrix[i]?SDL_PRESSED:SDL_RELEASED,&keysym);
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142 }
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143 }
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144 }
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145
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146 old_state = *state;
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147 }
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148
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149 void DC_PumpEvents(_THIS)
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150 {
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151 keyboard_update();
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152 mouse_update();
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153 }
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154
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155 void DC_InitOSKeymap(_THIS)
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156 {
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157 /* do nothing. */
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158 }
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159
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160 /* end of SDL_dcevents.c ... */
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161