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annotate src/video/photon/SDL_ph_modes.c @ 641:df178851293b

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Date: 28 Jun 2003 22:42:52 +0100 From: Alan Swanson Subject: Re: [SDL] New XFree 4.3 Video Mode Patch I have a wee amendment that moves the qsort in set_best_resolution to only occur after failing to find an exact match only. This would make absolutely sure we get a user set mode. While I've never had any problems for my normal resolutions (1280x1024, 1024x768, 800x600 & 640,480) while closely examining the output from qsort I've noticed it doesn't seem to sort the modes fully. These is one definite wrong at 1152x768 and a few that just look wrong to me. From a program (attached) I made to examine this more easily. X has sorted its mode list using the same method as ours (plus frequency), and our user modes get inserted without any other movement. On the patch I've made I've also changed cmpmodes to sort on vertical resolution and then horizontal. Ie vertical is now most significant bit.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 28 Jun 2003 21:52:26 +0000
parents 8e3ce997621c
children 8bedd6d61642
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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
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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 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include "SDL_ph_modes_c.h"
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29
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30 static unsigned long key1, key2;
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31 static PgVideoModeInfo_t mode_info;
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32 static PgVideoModes_t mode_list;
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33
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34 /* The current list of available video modes */
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35 SDL_Rect SDL_modelist[PH_MAX_VIDEOMODES];
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36 SDL_Rect* SDL_modearray[PH_MAX_VIDEOMODES];
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37
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38 static int compare_modes_by_res(const void* mode1, const void* mode2)
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39 {
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40 if (PgGetVideoModeInfo(*(unsigned short*)mode1, &mode_info) < 0)
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41 {
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42 fprintf(stderr,"error: In compare_modes_by_res PgGetVideoModeInfo failed on mode: 0x%x\n",
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43 *(unsigned short*)mode1);
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44 return 0;
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45 }
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46
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47 key1 = mode_info.width * mode_info.height;
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48
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49 if (PgGetVideoModeInfo(*(unsigned short*)mode2, &mode_info) < 0)
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50 {
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51 fprintf(stderr,"error: In compare_modes_by_res PgGetVideoModeInfo failed on mode: 0x%x\n",
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52 *(unsigned short*)mode2);
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53 return 0;
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54 }
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55
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56 key2 = mode_info.width * mode_info.height;
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57
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58 if (key1 > key2)
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59 return 1;
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60 else if (key1 == key2)
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61 return 0;
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62 else
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63 return -1;
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64 }
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65
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66 SDL_Rect **ph_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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67 {
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68 int i = 0;
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69 int j = 0;
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70 SDL_Rect Amodelist[PH_MAX_VIDEOMODES];
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72 for (i=0; i<PH_MAX_VIDEOMODES; i++)
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73 {
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74 SDL_modearray[i]=&SDL_modelist[i];
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75 }
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76
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77 if (PgGetVideoModeList( &mode_list ) < 0)
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78 {
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79 fprintf(stderr,"error: PgGetVideoModeList failed\n");
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80 return NULL;
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81 }
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82
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83 mode_info.bits_per_pixel = 0;
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84
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85 for (i=0; i < mode_list.num_modes; i++)
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86 {
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87 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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88 {
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89 fprintf(stderr,"error: PgGetVideoModeInfo failed on mode: 0x%x\n", mode_list.modes[i]);
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90 return NULL;
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91 }
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92 if(mode_info.bits_per_pixel == format->BitsPerPixel)
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93 {
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94 Amodelist[j].w = mode_info.width;
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95 Amodelist[j].h = mode_info.height;
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96 Amodelist[j].x = 0;
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97 Amodelist[j].y = 0;
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98 j++;
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99 }
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100 }
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101
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102 /* reorder biggest for smallest, assume width dominates */
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103
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104 for(i=0; i<j; i++)
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105 {
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106 SDL_modelist[i].w = Amodelist[j - i -1].w;
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107 SDL_modelist[i].h = Amodelist[j - i -1].h;
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108 SDL_modelist[i].x = Amodelist[j - i -1].x;
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109 SDL_modelist[i].y = Amodelist[j - i -1].y;
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110 }
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111 SDL_modearray[j]=NULL;
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112
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113 return SDL_modearray;
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114 }
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115
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116 void ph_FreeVideoModes(_THIS)
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117 {
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118 return;
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119 }
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120
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121 /* return the mode associated with width, height and bpp */
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122 /* if there is no mode then zero is returned */
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123 int get_mode(int width, int height, int bpp)
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124 {
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125 int i;
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126
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127 if(width<640)
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128 {
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129 width=640;
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130 }
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131 if(height<480)
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132 {
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133 height=480;
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134 }
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135
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136 if (PgGetVideoModeList(&mode_list) < 0)
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137 {
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138 fprintf(stderr,"error: PgGetVideoModeList failed\n");
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139 return -1;
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140 }
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141
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142 /* search list for exact match */
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143 for (i=0;i<mode_list.num_modes;i++)
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144 {
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145 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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146 {
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147 fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
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148 return 0;
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149 }
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150
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151 if ((mode_info.width == width) &&
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152 (mode_info.height == height) &&
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153 (mode_info.bits_per_pixel == bpp))
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154 {
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155 return mode_list.modes[i];
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156 }
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157 }
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158
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159 return (i == mode_list.num_modes) ? 0 : mode_list.modes[i];
0
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160 }
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161
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162 int get_mode_any_format(int width, int height, int bpp)
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163 /* return the mode associated with width, height and bpp */
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164 /* if requested bpp is not found the mode with closest bpp is returned */
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165 {
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166 int i, closest, delta, min_delta;
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167
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168 if (PgGetVideoModeList( &mode_list ) < 0)
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169 {
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170 fprintf(stderr,"error: PgGetVideoModeList failed\n");
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171 return -1;
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172 }
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173
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174 qsort(mode_list.modes, mode_list.num_modes, sizeof(unsigned short), compare_modes_by_res);
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175 for(i=0;i<mode_list.num_modes;i++)
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176 {
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177 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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178 {
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179 fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
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180 return 0;
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181 }
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182 if ((mode_info.width == width) &&
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183 (mode_info.height == height))
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184 break;
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185 }
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186 if (i<mode_list.num_modes)
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187 {
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188 /* get closest bpp */
0
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189 closest = i++;
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190 if (mode_info.bits_per_pixel == bpp)
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191 return mode_list.modes[closest];
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192
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193 min_delta = abs(mode_info.bits_per_pixel - bpp);
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194 while(1)
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195 {
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196 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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197 {
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198 fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
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199 return 0;
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200 }
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201
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202 if ((mode_info.width != width) ||
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203 (mode_info.height != height))
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204 break;
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205 else if (mode_info.bits_per_pixel == bpp)
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206 {
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207 closest = i;
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208 break;
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209 }
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210 else
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211 {
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212 delta = abs(mode_info.bits_per_pixel - bpp);
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213 if (delta < min_delta)
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214 {
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215 closest = i;
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diff changeset
216 min_delta = delta;
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217 }
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218 i++;
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219 }
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220 }
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221 return mode_list.modes[closest];
0
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222 }
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223 else
309
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224 return 0;
0
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225 }
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226
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227 int ph_ToggleFullScreen(_THIS, int on)
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228 {
309
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229 if (currently_fullscreen)
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230 {
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231 return ph_LeaveFullScreen(this);
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232 }
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233 else
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234 {
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235 return ph_EnterFullScreen(this);
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236 }
0
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237
309
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238 return 0;
0
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239 }
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240
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241 int ph_EnterFullScreen(_THIS)
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242 {
309
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243 if (!currently_fullscreen)
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244 {
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diff changeset
245 if (this->screen)
309
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246 {
315
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diff changeset
247 if ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL)
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diff changeset
248 {
309
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diff changeset
249 #ifdef HAVE_OPENGL
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diff changeset
250 #endif /* HAVE_OPENGL */
315
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diff changeset
251 return 0;
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diff changeset
252 }
309
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diff changeset
253 }
315
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diff changeset
254
571
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diff changeset
255 if (OCImage.direct_context==NULL)
309
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diff changeset
256 {
315
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diff changeset
257 OCImage.direct_context=(PdDirectContext_t*)PdCreateDirectContext();
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diff changeset
258 }
0
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diff changeset
259
315
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diff changeset
260 if (!OCImage.direct_context)
3333b6e68289 Date: Sat, 23 Mar 2002 13:53:37 +0200
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diff changeset
261 {
571
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diff changeset
262 fprintf(stderr, "ph_EnterFullScreen(): Can't create direct context !\n");
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diff changeset
263 return 0;
315
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diff changeset
264 }
0
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diff changeset
265
571
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diff changeset
266 OCImage.oldDC=PdDirectStart(OCImage.direct_context);
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diff changeset
267
315
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diff changeset
268 currently_fullscreen = 1;
309
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diff changeset
269 }
0
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diff changeset
270
309
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diff changeset
271 return 1;
0
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diff changeset
272 }
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diff changeset
273
315
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diff changeset
274 int ph_LeaveFullScreen(_THIS)
0
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diff changeset
275 {
309
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diff changeset
276 PgDisplaySettings_t mymode_settings;
0
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277
309
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diff changeset
278 if (currently_fullscreen)
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diff changeset
279 {
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280 if ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL)
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diff changeset
281 {
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diff changeset
282 #ifdef HAVE_OPENGL
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diff changeset
283 #endif /* HAVE_OPENGL */
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diff changeset
284 return 0;
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diff changeset
285 }
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diff changeset
286 else
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diff changeset
287 {
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diff changeset
288 PdDirectStop(OCImage.direct_context);
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289 PdReleaseDirectContext(OCImage.direct_context);
571
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parents: 315
diff changeset
290 PhDCSetCurrent(OCImage.oldDC);
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parents: 315
diff changeset
291
315
3333b6e68289 Date: Sat, 23 Mar 2002 13:53:37 +0200
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diff changeset
292 currently_fullscreen=0;
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diff changeset
293
309
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diff changeset
294 /* Restore old video mode */
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diff changeset
295 if (old_video_mode != -1)
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diff changeset
296 {
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diff changeset
297 mymode_settings.mode= (unsigned short) old_video_mode;
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diff changeset
298 mymode_settings.refresh= (unsigned short) old_refresh_rate;
315
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diff changeset
299 mymode_settings.flags= 0;
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diff changeset
300
309
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diff changeset
301 if (PgSetVideoMode(&mymode_settings) < 0)
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parents: 297
diff changeset
302 {
571
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diff changeset
303 fprintf(stderr, "Ph_LeaveFullScreen(): PgSetVideoMode failed !\n");
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parents: 315
diff changeset
304 return 0;
309
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diff changeset
305 }
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diff changeset
306 }
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diff changeset
307
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308 old_video_mode=-1;
315
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parents: 309
diff changeset
309 old_refresh_rate=-1;
309
2de77f7b7a28 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
310 }
2de77f7b7a28 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
311
2de77f7b7a28 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
312 }
2de77f7b7a28 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
313 return 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 }