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annotate src/video/nanox/SDL_nximage.c @ 1050:8e1815fd9777

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Holding down shift while moving the mouse's scrollwheel on MacOS X makes the OS report these are "horizontal scrollwheel" events, which confuses gaming apps in several legitimate conditions. Now all scrollwheel events are made to look vertical when passed to the app. Patch by John Knottenbelt. http://www.libsdl.org/pipermail/sdl/2005-March/067978.html
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 17 Apr 2005 10:32:41 +0000
parents b8d311d90021
children 604d73db6802
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4 Copyright (C) 2001 Hsieh-Fu Tsai
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5 Copyright (C) 2002 Greg Haerr <greg@censoft.com>
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6
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7 This library is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU Library General Public
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9 License as published by the Free Software Foundation; either
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10 version 2 of the License, or (at your option) any later version.
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11
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12 This library is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 Library General Public License for more details.
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16
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17 You should have received a copy of the GNU Library General Public
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18 License along with this library; if not, write to the Free
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19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20
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21 Sam Lantinga
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22 slouken@libsdl.org
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23
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24 Hsieh-Fu Tsai
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25 clare@setabox.com
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26 */
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27
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28 #include <stdlib.h>
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29 #include <string.h>
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31 #include "SDL_error.h"
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32
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33 #include "SDL_nximage_c.h"
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34
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35 void NX_NormalUpdate (_THIS, int numrects, SDL_Rect * rects)
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36 {
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37 int i, j, xinc, yinc, destinc, rowinc ;
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38 int x, y, w, h ;
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39 unsigned char * src = NULL, * dest = NULL ;
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40
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41 Dprintf ("enter NX_NormalUpdate\n") ;
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42
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43 /* These are the values for the incoming image */
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44 xinc = this -> screen -> format -> BytesPerPixel ;
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45 yinc = this -> screen -> pitch ;
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46
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47 for (i = 0; i < numrects; ++ i) {
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48 x = rects [i].x, y = rects [i].y ;
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49 w = rects [i].w, h = rects [i].h ;
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50 src = SDL_Image + y * yinc + x * xinc ;
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51 #ifdef ENABLE_NANOX_DIRECT_FB
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52 if (Clientfb) {
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53 if (currently_fullscreen)
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54 dest = fbinfo.winpixels + (((y+OffsetY) * fbinfo.pitch) +
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55 ((x+OffsetX) * fbinfo.bytespp));
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56 else
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57 dest = fbinfo.winpixels + ((y * fbinfo.pitch) + (x * fbinfo.bytespp));
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58 destinc = fbinfo.pitch;
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59 }
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60 else
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61 #endif
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62 {
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63 dest = Image_buff ;
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64 destinc = w * xinc ;
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65 }
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66 rowinc = w * xinc;
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67
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68 // apply GammaRamp table
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69 if ((pixel_type == MWPF_TRUECOLOR0888 || pixel_type == MWPF_TRUECOLOR888)
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70 && GammaRamp_R && GammaRamp_G && GammaRamp_B) {
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71 Uint8 * ptrsrc ;
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72 Uint8 * ptrdst ;
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73 int k ;
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74
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75 for (j = h; j > 0; -- j, src += yinc, dest += destinc) {
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76 ptrsrc = src ;
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77 ptrdst = dest ;
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78 for (k = w; k > 0; -- k) {
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79 *ptrdst++ = GammaRamp_B [*ptrsrc++] >> 8;
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80 *ptrdst++ = GammaRamp_G [*ptrsrc++] >> 8;
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81 *ptrdst++ = GammaRamp_R [*ptrsrc++] >> 8;
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82 *ptrdst++ = 0;
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83 ++ptrsrc;
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84 }
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85 }
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86 }
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87 #if 1 /* This is needed for microwindows 0.90 or older */
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88 else if (pixel_type == MWPF_TRUECOLOR0888 || pixel_type == MWPF_TRUECOLOR888) {
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89 Uint8 * ptrsrc ;
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90 Uint8 * ptrdst ;
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91 int k ;
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92
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93 for (j = h; j > 0; -- j, src += yinc, dest += destinc) {
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94 ptrsrc = src ;
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95 ptrdst = dest ;
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96 for (k = w; k > 0; -- k) {
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97 *ptrdst++ = *ptrsrc++;
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98 *ptrdst++ = *ptrsrc++;
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99 *ptrdst++ = *ptrsrc++;
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100 *ptrdst++ = 0;
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101 ++ptrsrc;
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102 }
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103 }
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104 }
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105 #endif
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106 else
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107 {
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108 for (j = h; j > 0; -- j, src += yinc, dest += destinc)
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109 memcpy (dest, src, rowinc) ;
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110 }
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111 if (!Clientfb) {
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112 if (currently_fullscreen) {
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113 GrArea (FSwindow, SDL_GC, x + OffsetX, y + OffsetY, w, h, Image_buff,
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114 pixel_type) ;
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115 } else {
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116 GrArea (SDL_Window, SDL_GC, x, y, w, h, Image_buff, pixel_type) ;
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117 }
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118 }
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119 }
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120 GrFlush();
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121
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122 Dprintf ("leave NX_NormalUpdate\n") ;
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123 }
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124
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125 int NX_SetupImage (_THIS, SDL_Surface * screen)
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126 {
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127 int size = screen -> h * screen -> pitch ;
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128
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129 Dprintf ("enter NX_SetupImage\n") ;
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130
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131 screen -> pixels = (void *) malloc (size) ;
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132
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133 if (!Clientfb) {
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134 Image_buff = (unsigned char *) malloc (size) ;
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135 if (screen -> pixels == NULL || Image_buff == NULL) {
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136 free (screen -> pixels) ;
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137 free (Image_buff) ;
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138 SDL_OutOfMemory () ;
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139 return -1 ;
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140 }
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141 }
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142
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143 SDL_Image = (unsigned char *) screen -> pixels ;
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144
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145 this -> UpdateRects = NX_NormalUpdate ;
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146
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147 Dprintf ("leave NX_SetupImage\n") ;
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148 return 0 ;
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149 }
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150
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151 void NX_DestroyImage (_THIS, SDL_Surface * screen)
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152 {
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153 Dprintf ("enter NX_DestroyImage\n") ;
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154
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155 if (SDL_Image) free (SDL_Image) ;
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156 if (Image_buff) free (Image_buff) ;
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157 if (screen) screen -> pixels = NULL ;
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158
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159 Dprintf ("leave NX_DestroyImage\n") ;
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160 }
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161
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162 int NX_ResizeImage (_THIS, SDL_Surface * screen, Uint32 flags)
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163 {
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164 int retval ;
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165 GR_SCREEN_INFO si ;
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166
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167 Dprintf ("enter NX_ResizeImage\n") ;
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168
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169 NX_DestroyImage (this, screen) ;
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170 retval = NX_SetupImage (this, screen) ;
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171
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172 GrGetScreenInfo (& si) ;
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173 OffsetX = (si.cols - screen -> w) / 2 ;
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174 OffsetY = (si.rows - screen -> h) / 2 ;
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175
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176 #ifdef ENABLE_NANOX_DIRECT_FB
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177 if (Clientfb) {
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178 /* Get current window position and fb pointer*/
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179 if (currently_fullscreen)
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180 GrGetWindowFBInfo(FSwindow, &fbinfo);
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181 else
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182 GrGetWindowFBInfo(SDL_Window, &fbinfo);
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183 }
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184 #endif
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185 Dprintf ("leave NX_ResizeImage\n") ;
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186 return retval ;
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187 }
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188
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189 void NX_RefreshDisplay (_THIS)
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190 {
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191 Dprintf ("enter NX_RefreshDisplay\n") ;
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192
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193 // Don't refresh a display that doesn't have an image (like GL)
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194 if (! SDL_Image) {
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195 return;
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196 }
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197
471
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198 #ifdef ENABLE_NANOX_DIRECT_FB
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199 if (Clientfb) {
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200 int j;
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201 char *src, *dest = NULL;
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202 int xinc, yinc, rowinc;
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203
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204 GrGetWindowFBInfo(SDL_Window, &fbinfo);
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205
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206 xinc = this -> screen -> format -> BytesPerPixel ;
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207 yinc = this -> screen -> pitch ;
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208
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209 src = SDL_Image;
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210 if (currently_fullscreen)
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211 dest = fbinfo.winpixels + ((OffsetY * fbinfo.pitch) +
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212 (OffsetX * fbinfo.bytespp));
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213 else
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214 dest = fbinfo.winpixels;
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215 rowinc = xinc * this -> screen -> w;
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216
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217 for (j = this -> screen -> h; j > 0; -- j, src += yinc, dest += fbinfo.pitch)
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218 memcpy (dest, src, rowinc) ;
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219 }
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220 else
471
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221 #endif
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222 {
471
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223 if (currently_fullscreen) {
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224 GrArea (FSwindow, SDL_GC, OffsetX, OffsetY, this -> screen -> w,
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225 this -> screen -> h, SDL_Image, pixel_type) ;
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226 } else {
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227 GrArea (SDL_Window, SDL_GC, 0, 0, this -> screen -> w,
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228 this -> screen -> h, SDL_Image, pixel_type) ;
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229 }
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230 }
471
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231 GrFlush();
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232
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233 Dprintf ("leave NX_RefreshDisplay\n") ;
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234 }