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annotate src/video/nanox/SDL_nximage.c @ 4194:05c9e942cc46 SDL-1.2

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Preliminary work to support the Milan video bios, that will gives access to 24 or 32 bpp modes. I used the svga driver as model to dynamically build video modes list.
author Patrice Mandin <patmandin@gmail.com>
date Sat, 19 Sep 2009 12:46:00 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 #include "SDL_config.h"
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28
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29 #include "SDL_nximage_c.h"
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31 void NX_NormalUpdate (_THIS, int numrects, SDL_Rect * rects)
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32 {
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33 int i, j, xinc, yinc, destinc, rowinc ;
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34 int x, y, w, h ;
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35 unsigned char * src = NULL, * dest = NULL ;
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36
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37 Dprintf ("enter NX_NormalUpdate\n") ;
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38
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39 /* These are the values for the incoming image */
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40 xinc = this -> screen -> format -> BytesPerPixel ;
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41 yinc = this -> screen -> pitch ;
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42
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43 for (i = 0; i < numrects; ++ i) {
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44 x = rects [i].x, y = rects [i].y ;
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45 w = rects [i].w, h = rects [i].h ;
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46 src = SDL_Image + y * yinc + x * xinc ;
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47 #ifdef ENABLE_NANOX_DIRECT_FB
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48 if (Clientfb) {
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49 if (currently_fullscreen)
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50 dest = fbinfo.winpixels + (((y+OffsetY) * fbinfo.pitch) +
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51 ((x+OffsetX) * fbinfo.bytespp));
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52 else
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53 dest = fbinfo.winpixels + ((y * fbinfo.pitch) + (x * fbinfo.bytespp));
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54 destinc = fbinfo.pitch;
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55 }
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56 else
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57 #endif
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58 {
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59 dest = Image_buff ;
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60 destinc = w * xinc ;
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61 }
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62 rowinc = w * xinc;
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63
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64 // apply GammaRamp table
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65 if ((pixel_type == MWPF_TRUECOLOR0888 || pixel_type == MWPF_TRUECOLOR888)
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66 && GammaRamp_R && GammaRamp_G && GammaRamp_B) {
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67 Uint8 * ptrsrc ;
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68 Uint8 * ptrdst ;
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69 int k ;
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70
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71 for (j = h; j > 0; -- j, src += yinc, dest += destinc) {
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72 ptrsrc = src ;
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73 ptrdst = dest ;
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74 for (k = w; k > 0; -- k) {
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75 *ptrdst++ = GammaRamp_B [*ptrsrc++] >> 8;
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76 *ptrdst++ = GammaRamp_G [*ptrsrc++] >> 8;
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77 *ptrdst++ = GammaRamp_R [*ptrsrc++] >> 8;
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78 *ptrdst++ = 0;
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79 ++ptrsrc;
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80 }
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81 }
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82 }
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83 #if 1 /* This is needed for microwindows 0.90 or older */
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84 else if (pixel_type == MWPF_TRUECOLOR0888 || pixel_type == MWPF_TRUECOLOR888) {
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85 Uint8 * ptrsrc ;
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86 Uint8 * ptrdst ;
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87 int k ;
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88
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89 for (j = h; j > 0; -- j, src += yinc, dest += destinc) {
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90 ptrsrc = src ;
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91 ptrdst = dest ;
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92 for (k = w; k > 0; -- k) {
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93 *ptrdst++ = *ptrsrc++;
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94 *ptrdst++ = *ptrsrc++;
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95 *ptrdst++ = *ptrsrc++;
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96 *ptrdst++ = 0;
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97 ++ptrsrc;
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98 }
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99 }
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100 }
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101 #endif
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102 else
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103 {
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104 for (j = h; j > 0; -- j, src += yinc, dest += destinc)
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105 SDL_memcpy (dest, src, rowinc) ;
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106 }
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107 if (!Clientfb) {
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108 if (currently_fullscreen) {
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109 GrArea (FSwindow, SDL_GC, x + OffsetX, y + OffsetY, w, h, Image_buff,
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110 pixel_type) ;
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111 } else {
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112 GrArea (SDL_Window, SDL_GC, x, y, w, h, Image_buff, pixel_type) ;
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113 }
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114 }
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115 }
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116 GrFlush();
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117
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118 Dprintf ("leave NX_NormalUpdate\n") ;
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119 }
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120
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121 int NX_SetupImage (_THIS, SDL_Surface * screen)
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122 {
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123 int size = screen -> h * screen -> pitch ;
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124
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125 Dprintf ("enter NX_SetupImage\n") ;
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126
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127 screen -> pixels = (void *) SDL_malloc (size) ;
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128
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129 if (!Clientfb) {
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130 Image_buff = (unsigned char *) SDL_malloc (size) ;
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131 if (screen -> pixels == NULL || Image_buff == NULL) {
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132 SDL_free (screen -> pixels) ;
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133 SDL_free (Image_buff) ;
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134 SDL_OutOfMemory () ;
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135 return -1 ;
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136 }
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137 }
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138
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139 SDL_Image = (unsigned char *) screen -> pixels ;
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140
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141 this -> UpdateRects = NX_NormalUpdate ;
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142
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143 Dprintf ("leave NX_SetupImage\n") ;
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144 return 0 ;
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145 }
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146
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147 void NX_DestroyImage (_THIS, SDL_Surface * screen)
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148 {
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149 Dprintf ("enter NX_DestroyImage\n") ;
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150
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151 if (SDL_Image) SDL_free (SDL_Image) ;
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152 if (Image_buff) SDL_free (Image_buff) ;
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153 if (screen) screen -> pixels = NULL ;
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154
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155 Dprintf ("leave NX_DestroyImage\n") ;
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156 }
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157
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158 int NX_ResizeImage (_THIS, SDL_Surface * screen, Uint32 flags)
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159 {
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160 int retval ;
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161 GR_SCREEN_INFO si ;
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162
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163 Dprintf ("enter NX_ResizeImage\n") ;
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164
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165 NX_DestroyImage (this, screen) ;
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166 retval = NX_SetupImage (this, screen) ;
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167
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168 GrGetScreenInfo (& si) ;
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169 OffsetX = (si.cols - screen -> w) / 2 ;
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170 OffsetY = (si.rows - screen -> h) / 2 ;
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171
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172 #ifdef ENABLE_NANOX_DIRECT_FB
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173 if (Clientfb) {
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174 /* Get current window position and fb pointer*/
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175 if (currently_fullscreen)
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176 GrGetWindowFBInfo(FSwindow, &fbinfo);
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177 else
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178 GrGetWindowFBInfo(SDL_Window, &fbinfo);
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179 }
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180 #endif
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181 Dprintf ("leave NX_ResizeImage\n") ;
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182 return retval ;
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183 }
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184
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185 void NX_RefreshDisplay (_THIS)
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186 {
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187 Dprintf ("enter NX_RefreshDisplay\n") ;
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188
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189 // Don't refresh a display that doesn't have an image (like GL)
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190 if (! SDL_Image) {
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191 return;
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192 }
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193
471
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194 #ifdef ENABLE_NANOX_DIRECT_FB
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195 if (Clientfb) {
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196 int j;
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197 char *src, *dest = NULL;
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198 int xinc, yinc, rowinc;
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199
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200 GrGetWindowFBInfo(SDL_Window, &fbinfo);
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201
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202 xinc = this -> screen -> format -> BytesPerPixel ;
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203 yinc = this -> screen -> pitch ;
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204
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205 src = SDL_Image;
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206 if (currently_fullscreen)
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207 dest = fbinfo.winpixels + ((OffsetY * fbinfo.pitch) +
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208 (OffsetX * fbinfo.bytespp));
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209 else
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210 dest = fbinfo.winpixels;
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211 rowinc = xinc * this -> screen -> w;
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212
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213 for (j = this -> screen -> h; j > 0; -- j, src += yinc, dest += fbinfo.pitch)
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214 SDL_memcpy (dest, src, rowinc) ;
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215 }
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216 else
471
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217 #endif
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218 {
471
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219 if (currently_fullscreen) {
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220 GrArea (FSwindow, SDL_GC, OffsetX, OffsetY, this -> screen -> w,
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221 this -> screen -> h, SDL_Image, pixel_type) ;
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222 } else {
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223 GrArea (SDL_Window, SDL_GC, 0, 0, this -> screen -> w,
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224 this -> screen -> h, SDL_Image, pixel_type) ;
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225 }
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226 }
471
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227 GrFlush();
30
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228
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229 Dprintf ("leave NX_RefreshDisplay\n") ;
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230 }