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annotate src/video/nanox/SDL_nximage.c @ 571:8e3ce997621c

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Date: Thu, 16 Jan 2003 13:48:31 +0200 From: "Mike Gorchak" Subject: All QNX patches whole patches concerning QNX. Almost all code has been rewritten by Julian and me. Added initial support for hw overlays in QNX and many many others fixes. P.S. This patches has been reviewed by Dave Rempel from QSSL and included in SDL 1.2.5 distribution, which coming on 3rd party CD for newest 6.2.1 version of QNX, which will be available soon.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 20 Jan 2003 01:38:37 +0000
parents 26dafefeebb2
children 31d9be995d5c
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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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e8157fcb3114 Updated the source with the correct e-mail address
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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
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30 #include "SDL_error.h"
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31
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32 #include "SDL_nximage_c.h"
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33
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34 void NX_NormalUpdate (_THIS, int numrects, SDL_Rect * rects)
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35 {
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36 int i, j, xinc, yinc, destinc, rowinc ;
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37 int x, y, w, h ;
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38 unsigned char * src = NULL, * dest = NULL ;
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39
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40 Dprintf ("enter NX_NormalUpdate\n") ;
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41
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42 /* These are the values for the incoming image */
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43 xinc = this -> screen -> format -> BytesPerPixel ;
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44 yinc = this -> screen -> pitch ;
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45
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46 for (i = 0; i < numrects; ++ i) {
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47 x = rects [i].x, y = rects [i].y ;
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48 w = rects [i].w, h = rects [i].h ;
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49 src = SDL_Image + y * yinc + x * xinc ;
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50 #ifdef ENABLE_NANOX_DIRECT_FB
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51 if (Clientfb) {
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52 if (currently_fullscreen)
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53 dest = fbinfo.winpixels + (((y+OffsetY) * fbinfo.pitch) +
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54 ((x+OffsetX) * fbinfo.bytespp));
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55 else
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56 dest = fbinfo.winpixels + ((y * fbinfo.pitch) + (x * fbinfo.bytespp));
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57 destinc = fbinfo.pitch;
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58 } else {
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59 #endif
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60 dest = Image_buff ;
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61 destinc = w * xinc ;
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62 #ifdef ENABLE_NANOX_DIRECT_FB
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63 }
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64 #endif
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65 rowinc = w * xinc;
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66
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67 // apply GammaRamp table
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68 if ((pixel_type == MWPF_TRUECOLOR0888 || pixel_type == MWPF_TRUECOLOR888)
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69 && GammaRamp_R && GammaRamp_G && GammaRamp_B) {
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70 Uint8 * ptr ;
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71 int k ;
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72
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73 for (j = h; j > 0; -- j, src += yinc) {
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74 ptr = src - 1 ;
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75 for (k = w; k > 0; -- k) {
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76 if (pixel_type == MWPF_TRUECOLOR0888)
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77 ptr += 2 ;
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78 else
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79 ++ ptr ;
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80 (* ptr) = GammaRamp_B [(* ptr)] ;
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81 ++ ptr ;
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82 (* ptr) = GammaRamp_G [(* ptr)] ;
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83 ++ ptr ;
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84 (* ptr) = GammaRamp_R [(* ptr)] ;
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85 }
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86 }
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87 src = SDL_Image + y * yinc + x * xinc ;
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88 }
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89
471
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90 for (j = h; j > 0; -- j, src += yinc, dest += destinc)
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91 memcpy (dest, src, rowinc) ;
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92 if (!Clientfb) {
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93 if (currently_fullscreen) {
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94 GrArea (FSwindow, SDL_GC, x + OffsetX, y + OffsetY, w, h, Image_buff,
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95 pixel_type) ;
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96 } else {
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97 GrArea (SDL_Window, SDL_GC, x, y, w, h, Image_buff, pixel_type) ;
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98 }
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99 }
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100 }
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101 GrFlush();
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102
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103 Dprintf ("leave NX_NormalUpdate\n") ;
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104 }
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105
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106 int NX_SetupImage (_THIS, SDL_Surface * screen)
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107 {
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108 int size = screen -> h * screen -> pitch ;
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109
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110 Dprintf ("enter NX_SetupImage\n") ;
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111
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112 screen -> pixels = (void *) malloc (size) ;
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113
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114 if (!Clientfb) {
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115 Image_buff = (unsigned char *) malloc (size) ;
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116 if (screen -> pixels == NULL || Image_buff == NULL) {
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117 free (screen -> pixels) ;
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118 free (Image_buff) ;
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119 SDL_OutOfMemory () ;
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120 return -1 ;
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121 }
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122 }
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123
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124 SDL_Image = (unsigned char *) screen -> pixels ;
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125
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126 this -> UpdateRects = NX_NormalUpdate ;
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127
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128 Dprintf ("leave NX_SetupImage\n") ;
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129 return 0 ;
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130 }
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131
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132 void NX_DestroyImage (_THIS, SDL_Surface * screen)
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133 {
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134 Dprintf ("enter NX_DestroyImage\n") ;
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135
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136 if (SDL_Image) free (SDL_Image) ;
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137 if (Image_buff) free (Image_buff) ;
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138 if (screen) screen -> pixels = NULL ;
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139
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140 Dprintf ("leave NX_DestroyImage\n") ;
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141 }
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142
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143 int NX_ResizeImage (_THIS, SDL_Surface * screen, Uint32 flags)
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144 {
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145 int retval ;
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146 GR_SCREEN_INFO si ;
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147
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148 Dprintf ("enter NX_ResizeImage\n") ;
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149
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150 NX_DestroyImage (this, screen) ;
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151 retval = NX_SetupImage (this, screen) ;
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152
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153 GrGetScreenInfo (& si) ;
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154 OffsetX = (si.cols - screen -> w) / 2 ;
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155 OffsetY = (si.rows - screen -> h) / 2 ;
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156
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157 #ifdef ENABLE_NANOX_DIRECT_FB
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158 if (Clientfb) {
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159 /* Get current window position and fb pointer*/
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160 if (currently_fullscreen)
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161 GrGetWindowFBInfo(FSwindow, &fbinfo);
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162 else
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163 GrGetWindowFBInfo(SDL_Window, &fbinfo);
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164 }
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165 #endif
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166 Dprintf ("leave NX_ResizeImage\n") ;
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167 return retval ;
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168 }
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169
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170 void NX_RefreshDisplay (_THIS)
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171 {
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172 Dprintf ("enter NX_RefreshDisplay\n") ;
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173
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174 // Don't refresh a display that doesn't have an image (like GL)
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175 if (! SDL_Image) {
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176 return;
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177 }
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178
471
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179 #ifdef ENABLE_NANOX_DIRECT_FB
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180 if (Clientfb) {
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181 int j;
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182 char *src, *dest = NULL;
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183 int xinc, yinc, rowinc;
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184
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185 GrGetWindowFBInfo(SDL_Window, &fbinfo);
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186
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187 xinc = this -> screen -> format -> BytesPerPixel ;
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188 yinc = this -> screen -> pitch ;
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189
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190 src = SDL_Image;
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191 if (currently_fullscreen)
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192 dest = fbinfo.winpixels + ((OffsetY * fbinfo.pitch) +
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193 (OffsetX * fbinfo.bytespp));
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194 else
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195 dest = fbinfo.winpixels;
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196 rowinc = xinc * this -> screen -> w;
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197
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198 for (j = this -> screen -> h; j > 0; -- j, src += yinc, dest += fbinfo.pitch)
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199 memcpy (dest, src, rowinc) ;
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200 } else {
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201 #endif
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202 if (currently_fullscreen) {
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203 GrArea (FSwindow, SDL_GC, OffsetX, OffsetY, this -> screen -> w,
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204 this -> screen -> h, SDL_Image, pixel_type) ;
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205 } else {
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206 GrArea (SDL_Window, SDL_GC, 0, 0, this -> screen -> w,
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207 this -> screen -> h, SDL_Image, pixel_type) ;
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208 }
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209 #ifdef ENABLE_NANOX_DIRECT_FB
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210 }
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211 #endif
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212 GrFlush();
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213
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214 Dprintf ("leave NX_RefreshDisplay\n") ;
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215 }