4 * Freeglut state query methods.
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6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
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7 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
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8 * Creation date: Thu Dec 16 1999
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10 * Permission is hereby granted, free of charge, to any person obtaining a
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11 * copy of this software and associated documentation files (the "Software"),
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12 * to deal in the Software without restriction, including without limitation
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13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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14 * and/or sell copies of the Software, and to permit persons to whom the
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15 * Software is furnished to do so, subject to the following conditions:
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17 * The above copyright notice and this permission notice shall be included
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18 * in all copies or substantial portions of the Software.
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20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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28 #include <GL/freeglut.h>
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29 #include "freeglut_internal.h"
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32 * TODO BEFORE THE STABLE RELEASE:
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34 * glutGet() -- X11 tests passed, but check if all enums
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35 * handled (what about Win32?)
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36 * glutDeviceGet() -- X11 tests passed, but check if all enums
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37 * handled (what about Win32?)
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38 * glutGetModifiers() -- OK, but could also remove the limitation
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39 * glutLayerGet() -- what about GLUT_NORMAL_DAMAGED?
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41 * The fail-on-call policy will help adding the most needed things imho.
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44 /* -- LOCAL DEFINITIONS ---------------------------------------------------- */
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46 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
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48 #if TARGET_HOST_POSIX_X11
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50 * Queries the GL context about some attributes
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52 static int fghGetConfig( int attribute )
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54 int returnValue = 0;
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55 int result; /* Not checked */
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57 if( fgStructure.CurrentWindow )
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58 result = glXGetFBConfigAttrib( fgDisplay.Display,
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59 *(fgStructure.CurrentWindow->Window.FBConfig),
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67 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
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70 * General settings assignment method
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72 void FGAPIENTRY glutSetOption( GLenum eWhat, int value )
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74 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetOption" );
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77 * XXX In chronological code add order. (WHY in that order?)
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81 case GLUT_INIT_WINDOW_X:
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82 fgState.Position.X = (GLint)value;
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85 case GLUT_INIT_WINDOW_Y:
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86 fgState.Position.Y = (GLint)value;
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89 case GLUT_INIT_WINDOW_WIDTH:
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90 fgState.Size.X = (GLint)value;
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93 case GLUT_INIT_WINDOW_HEIGHT:
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94 fgState.Size.Y = (GLint)value;
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97 case GLUT_INIT_DISPLAY_MODE:
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98 fgState.DisplayMode = (unsigned int)value;
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101 case GLUT_ACTION_ON_WINDOW_CLOSE:
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102 fgState.ActionOnWindowClose = value;
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105 case GLUT_RENDERING_CONTEXT:
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106 fgState.UseCurrentContext =
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107 ( value == GLUT_USE_CURRENT_CONTEXT ) ? GL_TRUE : GL_FALSE;
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110 case GLUT_DIRECT_RENDERING:
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111 fgState.DirectContext = value;
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114 case GLUT_WINDOW_CURSOR:
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115 if( fgStructure.CurrentWindow != NULL )
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116 fgStructure.CurrentWindow->State.Cursor = value;
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120 fgState.AuxiliaryBufferNumber = value;
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123 case GLUT_MULTISAMPLE:
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124 fgState.SampleNumber = value;
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128 fgWarning( "glutSetOption(): missing enum handle %d", eWhat );
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133 #if TARGET_HOST_MS_WINDOWS
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134 /* The following include file is available from SGI but is not standard:
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135 * #include <GL/wglext.h>
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136 * So we copy the necessary parts out of it to support the multisampling query
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138 #define WGL_SAMPLES_ARB 0x2042
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143 * General settings query method
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145 int FGAPIENTRY glutGet( GLenum eWhat )
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147 #if TARGET_HOST_MS_WINDOWS
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149 GLboolean boolValue ;
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156 case GLUT_INIT_STATE:
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157 return fgState.Initialised;
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159 case GLUT_ELAPSED_TIME:
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160 return fgElapsedTime();
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163 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGet" );
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165 /* XXX In chronological code add order. (WHY in that order?) */
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168 /* Following values are stored in fgState and fgDisplay global structures */
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169 case GLUT_SCREEN_WIDTH: return fgDisplay.ScreenWidth ;
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170 case GLUT_SCREEN_HEIGHT: return fgDisplay.ScreenHeight ;
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171 case GLUT_SCREEN_WIDTH_MM: return fgDisplay.ScreenWidthMM ;
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172 case GLUT_SCREEN_HEIGHT_MM: return fgDisplay.ScreenHeightMM;
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173 case GLUT_INIT_WINDOW_X: return fgState.Position.Use ?
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174 fgState.Position.X : -1 ;
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175 case GLUT_INIT_WINDOW_Y: return fgState.Position.Use ?
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176 fgState.Position.Y : -1 ;
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177 case GLUT_INIT_WINDOW_WIDTH: return fgState.Size.Use ?
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178 fgState.Size.X : -1 ;
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179 case GLUT_INIT_WINDOW_HEIGHT: return fgState.Size.Use ?
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180 fgState.Size.Y : -1 ;
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181 case GLUT_INIT_DISPLAY_MODE: return fgState.DisplayMode ;
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182 case GLUT_INIT_MAJOR_VERSION: return fgState.MajorVersion ;
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183 case GLUT_INIT_MINOR_VERSION: return fgState.MinorVersion ;
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184 case GLUT_INIT_FLAGS: return fgState.ContextFlags ;
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185 case GLUT_INIT_PROFILE: return fgState.ContextProfile ;
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187 #if TARGET_HOST_POSIX_X11
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189 * The window/context specific queries are handled mostly by
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192 case GLUT_WINDOW_NUM_SAMPLES:
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193 #ifdef GLX_VERSION_1_3
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194 glGetIntegerv(GL_SAMPLES, &nsamples);
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199 * The rest of GLX queries under X are general enough to use a macro to
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202 # define GLX_QUERY(a,b) case a: return fghGetConfig( b );
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204 GLX_QUERY( GLUT_WINDOW_RGBA, GLX_RGBA );
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205 GLX_QUERY( GLUT_WINDOW_DOUBLEBUFFER, GLX_DOUBLEBUFFER );
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206 GLX_QUERY( GLUT_WINDOW_BUFFER_SIZE, GLX_BUFFER_SIZE );
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207 GLX_QUERY( GLUT_WINDOW_STENCIL_SIZE, GLX_STENCIL_SIZE );
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208 GLX_QUERY( GLUT_WINDOW_DEPTH_SIZE, GLX_DEPTH_SIZE );
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209 GLX_QUERY( GLUT_WINDOW_RED_SIZE, GLX_RED_SIZE );
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210 GLX_QUERY( GLUT_WINDOW_GREEN_SIZE, GLX_GREEN_SIZE );
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211 GLX_QUERY( GLUT_WINDOW_BLUE_SIZE, GLX_BLUE_SIZE );
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212 GLX_QUERY( GLUT_WINDOW_ALPHA_SIZE, GLX_ALPHA_SIZE );
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213 GLX_QUERY( GLUT_WINDOW_ACCUM_RED_SIZE, GLX_ACCUM_RED_SIZE );
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214 GLX_QUERY( GLUT_WINDOW_ACCUM_GREEN_SIZE, GLX_ACCUM_GREEN_SIZE );
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215 GLX_QUERY( GLUT_WINDOW_ACCUM_BLUE_SIZE, GLX_ACCUM_BLUE_SIZE );
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216 GLX_QUERY( GLUT_WINDOW_ACCUM_ALPHA_SIZE, GLX_ACCUM_ALPHA_SIZE );
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217 GLX_QUERY( GLUT_WINDOW_STEREO, GLX_STEREO );
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221 /* Colormap size is handled in a bit different way than all the rest */
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222 case GLUT_WINDOW_COLORMAP_SIZE:
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223 if( (fghGetConfig( GLX_RGBA )) || (fgStructure.CurrentWindow == NULL) )
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226 * We've got a RGBA visual, so there is no colormap at all.
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227 * The other possibility is that we have no current window set.
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233 const GLXFBConfig * fbconfig =
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234 fgStructure.CurrentWindow->Window.FBConfig;
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236 XVisualInfo * visualInfo =
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237 glXGetVisualFromFBConfig( fgDisplay.Display, *fbconfig );
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239 const int result = visualInfo->visual->map_entries;
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247 * Those calls are somewhat similiar, as they use XGetWindowAttributes()
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250 case GLUT_WINDOW_X:
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251 case GLUT_WINDOW_Y:
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252 case GLUT_WINDOW_BORDER_WIDTH:
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253 case GLUT_WINDOW_HEADER_HEIGHT:
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258 if( fgStructure.CurrentWindow == NULL )
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261 XTranslateCoordinates(
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263 fgStructure.CurrentWindow->Window.Handle,
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264 fgDisplay.RootWindow,
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269 case GLUT_WINDOW_X: return x;
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270 case GLUT_WINDOW_Y: return y;
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275 XTranslateCoordinates(
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277 fgStructure.CurrentWindow->Window.Handle,
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278 w, 0, 0, &x, &y, &w);
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282 case GLUT_WINDOW_BORDER_WIDTH: return x;
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283 case GLUT_WINDOW_HEADER_HEIGHT: return y;
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287 case GLUT_WINDOW_WIDTH:
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288 case GLUT_WINDOW_HEIGHT:
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290 XWindowAttributes winAttributes;
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292 if( fgStructure.CurrentWindow == NULL )
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294 XGetWindowAttributes(
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296 fgStructure.CurrentWindow->Window.Handle,
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301 case GLUT_WINDOW_WIDTH: return winAttributes.width ;
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302 case GLUT_WINDOW_HEIGHT: return winAttributes.height ;
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306 /* I do not know yet if there will be a fgChooseVisual() function for Win32 */
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307 case GLUT_DISPLAY_MODE_POSSIBLE:
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309 /* We should not have to call fgChooseFBConfig again here. */
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310 GLXFBConfig * fbconfig;
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313 fbconfig = fgChooseFBConfig(NULL);
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315 if (fbconfig == NULL)
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328 /* This is system-dependant */
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329 case GLUT_WINDOW_FORMAT_ID:
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330 if( fgStructure.CurrentWindow == NULL )
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333 return fghGetConfig( GLX_VISUAL_ID );
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335 #elif TARGET_HOST_MS_WINDOWS
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337 case GLUT_WINDOW_NUM_SAMPLES:
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338 glGetIntegerv(WGL_SAMPLES_ARB, &nsamples);
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341 /* Handle the OpenGL inquiries */
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342 case GLUT_WINDOW_RGBA:
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343 #if defined(_WIN32_WCE)
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344 boolValue = (GLboolean)0; /* WinCE doesn't support this feature */
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346 glGetBooleanv ( GL_RGBA_MODE, &boolValue );
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347 returnValue = boolValue ? 1 : 0;
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349 return returnValue;
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350 case GLUT_WINDOW_DOUBLEBUFFER:
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351 #if defined(_WIN32_WCE)
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352 boolValue = (GLboolean)0; /* WinCE doesn't support this feature */
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354 glGetBooleanv ( GL_DOUBLEBUFFER, &boolValue );
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355 returnValue = boolValue ? 1 : 0;
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357 return returnValue;
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358 case GLUT_WINDOW_STEREO:
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359 #if defined(_WIN32_WCE)
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360 boolValue = (GLboolean)0; /* WinCE doesn't support this feature */
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362 glGetBooleanv ( GL_STEREO, &boolValue );
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363 returnValue = boolValue ? 1 : 0;
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365 return returnValue;
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367 case GLUT_WINDOW_RED_SIZE:
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368 glGetIntegerv ( GL_RED_BITS, &returnValue );
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369 return returnValue;
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370 case GLUT_WINDOW_GREEN_SIZE:
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371 glGetIntegerv ( GL_GREEN_BITS, &returnValue );
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372 return returnValue;
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373 case GLUT_WINDOW_BLUE_SIZE:
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374 glGetIntegerv ( GL_BLUE_BITS, &returnValue );
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375 return returnValue;
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376 case GLUT_WINDOW_ALPHA_SIZE:
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377 glGetIntegerv ( GL_ALPHA_BITS, &returnValue );
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378 return returnValue;
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379 case GLUT_WINDOW_ACCUM_RED_SIZE:
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380 #if defined(_WIN32_WCE)
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381 returnValue = 0; /* WinCE doesn't support this feature */
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383 glGetIntegerv ( GL_ACCUM_RED_BITS, &returnValue );
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385 return returnValue;
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386 case GLUT_WINDOW_ACCUM_GREEN_SIZE:
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387 #if defined(_WIN32_WCE)
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388 returnValue = 0; /* WinCE doesn't support this feature */
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390 glGetIntegerv ( GL_ACCUM_GREEN_BITS, &returnValue );
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392 return returnValue;
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393 case GLUT_WINDOW_ACCUM_BLUE_SIZE:
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394 #if defined(_WIN32_WCE)
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395 returnValue = 0; /* WinCE doesn't support this feature */
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397 glGetIntegerv ( GL_ACCUM_BLUE_BITS, &returnValue );
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399 return returnValue;
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400 case GLUT_WINDOW_ACCUM_ALPHA_SIZE:
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401 #if defined(_WIN32_WCE)
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402 returnValue = 0; /* WinCE doesn't support this feature */
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404 glGetIntegerv ( GL_ACCUM_ALPHA_BITS, &returnValue );
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406 return returnValue;
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407 case GLUT_WINDOW_DEPTH_SIZE:
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408 glGetIntegerv ( GL_DEPTH_BITS, &returnValue );
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409 return returnValue;
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411 case GLUT_WINDOW_BUFFER_SIZE:
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412 returnValue = 1 ; /* ????? */
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413 return returnValue;
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414 case GLUT_WINDOW_STENCIL_SIZE:
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415 returnValue = 0 ; /* ????? */
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416 return returnValue;
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418 case GLUT_WINDOW_X:
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419 case GLUT_WINDOW_Y:
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420 case GLUT_WINDOW_WIDTH:
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421 case GLUT_WINDOW_HEIGHT:
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424 * There is considerable confusion about the "right thing to
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425 * do" concerning window size and position. GLUT itself is
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426 * not consistent between Windows and UNIX/X11; since
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427 * platform independence is a virtue for "freeglut", we
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428 * decided to break with GLUT's behaviour.
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430 * Under UNIX/X11, it is apparently not possible to get the
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431 * window border sizes in order to subtract them off the
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432 * window's initial position until some time after the window
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433 * has been created. Therefore we decided on the following
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434 * behaviour, both under Windows and under UNIX/X11:
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435 * - When you create a window with position (x,y) and size
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436 * (w,h), the upper left hand corner of the outside of the
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437 * window is at (x,y) and the size of the drawable area is
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439 * - When you query the size and position of the window--as
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440 * is happening here for Windows--"freeglut" will return
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441 * the size of the drawable area--the (w,h) that you
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442 * specified when you created the window--and the coordinates
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443 * of the upper left hand corner of the drawable
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444 * area--which is NOT the (x,y) you specified.
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449 freeglut_return_val_if_fail( fgStructure.CurrentWindow != NULL, 0 );
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451 #if defined(_WIN32_WCE)
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452 GetWindowRect( fgStructure.CurrentWindow->Window.Handle, &winRect );
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454 winRect = fghGetClientArea(fgStructure.CurrentWindow, FALSE);
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455 #endif /* defined(_WIN32_WCE) */
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459 case GLUT_WINDOW_X: return winRect.left ;
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460 case GLUT_WINDOW_Y: return winRect.top ;
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461 case GLUT_WINDOW_WIDTH: return winRect.right - winRect.left;
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462 case GLUT_WINDOW_HEIGHT: return winRect.bottom - winRect.top;
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467 case GLUT_WINDOW_BORDER_WIDTH :
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468 case GLUT_WINDOW_HEADER_HEIGHT :
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469 #if defined(_WIN32_WCE)
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475 if (fgStructure.CurrentWindow && fgStructure.CurrentWindow->Window.Handle)
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476 windowStyle = GetWindowLong(fgStructure.CurrentWindow->Window.Handle, GWL_STYLE);
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478 /* If no window, return sizes for a default window with title bar and border */
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479 windowStyle = WS_OVERLAPPEDWINDOW;
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483 case GLUT_WINDOW_BORDER_WIDTH:
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485 int xBorderWidth, yBorderWidth;
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486 fghGetBorderWidth(windowStyle, &xBorderWidth, &yBorderWidth);
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487 return xBorderWidth;
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489 case GLUT_WINDOW_HEADER_HEIGHT:
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490 /* Need to query for WS_MAXIMIZEBOX to see if we have a title bar, the WS_CAPTION query is also true for a WS_DLGFRAME only... */
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491 return (windowStyle & WS_MAXIMIZEBOX)? GetSystemMetrics( SM_CYCAPTION ) : 0;
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494 #endif /* defined(_WIN32_WCE) */
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496 case GLUT_DISPLAY_MODE_POSSIBLE:
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497 #if defined(_WIN32_WCE)
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500 return fgSetupPixelFormat( fgStructure.CurrentWindow, GL_TRUE,
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502 #endif /* defined(_WIN32_WCE) */
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505 case GLUT_WINDOW_FORMAT_ID:
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506 #if !defined(_WIN32_WCE)
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507 if( fgStructure.CurrentWindow != NULL )
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508 return GetPixelFormat( fgStructure.CurrentWindow->Window.Device );
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509 #endif /* defined(_WIN32_WCE) */
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514 /* The window structure queries */
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515 case GLUT_WINDOW_PARENT:
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516 if( fgStructure.CurrentWindow == NULL ) return 0;
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517 if( fgStructure.CurrentWindow->Parent == NULL ) return 0;
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518 return fgStructure.CurrentWindow->Parent->ID;
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520 case GLUT_WINDOW_NUM_CHILDREN:
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521 if( fgStructure.CurrentWindow == NULL )
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523 return fgListLength( &fgStructure.CurrentWindow->Children );
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525 case GLUT_WINDOW_CURSOR:
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526 if( fgStructure.CurrentWindow == NULL )
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528 return fgStructure.CurrentWindow->State.Cursor;
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530 case GLUT_MENU_NUM_ITEMS:
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531 if( fgStructure.CurrentMenu == NULL )
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533 return fgListLength( &fgStructure.CurrentMenu->Entries );
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535 case GLUT_ACTION_ON_WINDOW_CLOSE:
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536 return fgState.ActionOnWindowClose;
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538 case GLUT_VERSION :
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539 return VERSION_MAJOR * 10000 + VERSION_MINOR * 100 + VERSION_PATCH;
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541 case GLUT_RENDERING_CONTEXT:
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542 return fgState.UseCurrentContext ? GLUT_USE_CURRENT_CONTEXT
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543 : GLUT_CREATE_NEW_CONTEXT;
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545 case GLUT_DIRECT_RENDERING:
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546 return fgState.DirectContext;
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548 case GLUT_FULL_SCREEN:
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549 return fgStructure.CurrentWindow->State.IsFullscreen;
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552 return fgState.AuxiliaryBufferNumber;
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554 case GLUT_MULTISAMPLE:
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555 return fgState.SampleNumber;
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558 fgWarning( "glutGet(): missing enum handle %d", eWhat );
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565 * Returns various device information.
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567 int FGAPIENTRY glutDeviceGet( GLenum eWhat )
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569 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDeviceGet" );
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571 /* XXX WARNING: we are mostly lying in this function. */
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574 case GLUT_HAS_KEYBOARD:
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576 * Win32 is assumed a keyboard, and this cannot be queried,
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577 * except for WindowsCE.
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579 * X11 has a core keyboard by definition, although it can
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580 * be present as a virtual/dummy keyboard. For now, there
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581 * is no reliable way to tell if a real keyboard is present.
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583 #if defined(_WIN32_CE)
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584 return ( GetKeyboardStatus() & KBDI_KEYBOARD_PRESENT ) ? 1 : 0;
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585 # if FREEGLUT_LIB_PRAGMAS
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586 # pragma comment (lib,"Kbdui.lib")
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593 #if TARGET_HOST_POSIX_X11
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595 /* X11 has a mouse by definition */
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596 case GLUT_HAS_MOUSE:
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599 case GLUT_NUM_MOUSE_BUTTONS:
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600 /* We should be able to pass NULL when the last argument is zero,
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601 * but at least one X server has a bug where this causes a segfault.
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603 * In XFree86/Xorg servers, a mouse wheel is seen as two buttons
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604 * rather than an Axis; "freeglut_main.c" expects this when
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605 * checking for a wheel event.
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609 int nbuttons = XGetPointerMapping(fgDisplay.Display, &map,0);
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613 #elif TARGET_HOST_MS_WINDOWS
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615 case GLUT_HAS_MOUSE:
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617 * MS Windows can be booted without a mouse.
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619 return GetSystemMetrics( SM_MOUSEPRESENT );
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621 case GLUT_NUM_MOUSE_BUTTONS:
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622 # if defined(_WIN32_WCE)
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625 return GetSystemMetrics( SM_CMOUSEBUTTONS );
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629 case GLUT_HAS_JOYSTICK:
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630 return fgJoystickDetect ();
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632 case GLUT_OWNS_JOYSTICK:
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633 return fgState.JoysticksInitialised;
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635 case GLUT_JOYSTICK_POLL_RATE:
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636 return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.JoystickPollRate : 0;
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638 /* XXX The following two are only for Joystick 0 but this is an improvement */
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639 case GLUT_JOYSTICK_BUTTONS:
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640 return glutJoystickGetNumButtons ( 0 );
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642 case GLUT_JOYSTICK_AXES:
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643 return glutJoystickGetNumAxes ( 0 );
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645 case GLUT_HAS_DIAL_AND_BUTTON_BOX:
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646 return fgInputDeviceDetect ();
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648 case GLUT_NUM_DIALS:
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649 if ( fgState.InputDevsInitialised ) return 8;
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652 case GLUT_NUM_BUTTON_BOX_BUTTONS:
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655 case GLUT_HAS_SPACEBALL:
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656 return fgHasSpaceball();
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658 case GLUT_HAS_TABLET:
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661 case GLUT_NUM_SPACEBALL_BUTTONS:
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662 return fgSpaceballNumButtons();
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664 case GLUT_NUM_TABLET_BUTTONS:
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667 case GLUT_DEVICE_IGNORE_KEY_REPEAT:
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668 return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.IgnoreKeyRepeat : 0;
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670 case GLUT_DEVICE_KEY_REPEAT:
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671 return fgState.KeyRepeat;
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674 fgWarning( "glutDeviceGet(): missing enum handle %d", eWhat );
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678 /* And now -- the failure. */
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683 * This should return the current state of ALT, SHIFT and CTRL keys.
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685 int FGAPIENTRY glutGetModifiers( void )
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687 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetModifiers" );
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688 if( fgState.Modifiers == INVALID_MODIFIERS )
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690 fgWarning( "glutGetModifiers() called outside an input callback" );
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694 return fgState.Modifiers;
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698 * Return the state of the GLUT API overlay subsystem. A misery ;-)
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700 int FGAPIENTRY glutLayerGet( GLenum eWhat )
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702 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLayerGet" );
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705 * This is easy as layers are not implemented ;-)
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707 * XXX Can we merge the UNIX/X11 and WIN32 sections? Or
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708 * XXX is overlay support planned?
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713 #if TARGET_HOST_POSIX_X11
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715 case GLUT_OVERLAY_POSSIBLE:
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718 case GLUT_LAYER_IN_USE:
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719 return GLUT_NORMAL;
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721 case GLUT_HAS_OVERLAY:
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724 case GLUT_TRANSPARENT_INDEX:
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726 * Return just anything, which is always defined as zero
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732 case GLUT_NORMAL_DAMAGED:
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733 /* XXX Actually I do not know. Maybe. */
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736 case GLUT_OVERLAY_DAMAGED:
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739 #elif TARGET_HOST_MS_WINDOWS
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741 case GLUT_OVERLAY_POSSIBLE:
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742 /* return fgSetupPixelFormat( fgStructure.CurrentWindow, GL_TRUE,
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743 PFD_OVERLAY_PLANE ); */
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746 case GLUT_LAYER_IN_USE:
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747 return GLUT_NORMAL;
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749 case GLUT_HAS_OVERLAY:
\r
752 case GLUT_TRANSPARENT_INDEX:
\r
754 * Return just anything, which is always defined as zero
\r
760 case GLUT_NORMAL_DAMAGED:
\r
761 /* XXX Actually I do not know. Maybe. */
\r
764 case GLUT_OVERLAY_DAMAGED:
\r
769 fgWarning( "glutLayerGet(): missing enum handle %d", eWhat );
\r
773 /* And fail. That's good. Programs do love failing. */
\r
777 int * FGAPIENTRY glutGetModeValues(GLenum eWhat, int * size)
\r
781 #if TARGET_HOST_POSIX_X11
\r
783 GLXFBConfig * fbconfigArray; /* Array of FBConfigs */
\r
784 int fbconfigArraySize; /* Number of FBConfigs in the array */
\r
785 int attribute_name = 0;
\r
788 FREEGLUT_EXIT_IF_NOT_INITIALISED("glutGetModeValues");
\r
795 #if TARGET_HOST_POSIX_X11
\r
797 case GLUT_MULTISAMPLE:
\r
799 attributes[0] = GLX_BUFFER_SIZE;
\r
800 attributes[1] = GLX_DONT_CARE;
\r
806 FBConfigs are now sorted by increasing number of auxiliary
\r
807 buffers. We want at least one buffer.
\r
809 attributes[2] = GLX_AUX_BUFFERS;
\r
811 attributes[4] = None;
\r
813 attribute_name = GLX_AUX_BUFFERS;
\r
818 case GLUT_MULTISAMPLE:
\r
819 attributes[2] = GLX_AUX_BUFFERS;
\r
820 attributes[3] = GLX_DONT_CARE;
\r
821 attributes[4] = GLX_SAMPLE_BUFFERS;
\r
824 FBConfigs are now sorted by increasing number of samples per
\r
825 pixel. We want at least one sample.
\r
827 attributes[6] = GLX_SAMPLES;
\r
829 attributes[8] = None;
\r
831 attribute_name = GLX_SAMPLES;
\r
836 fbconfigArray = glXChooseFBConfig(fgDisplay.Display,
\r
839 &fbconfigArraySize);
\r
841 if (fbconfigArray != NULL)
\r
844 int result; /* Returned by glXGetFBConfigAttrib. Not checked. */
\r
845 int previous_value;
\r
848 temp_array = malloc(sizeof(int) * fbconfigArraySize);
\r
849 previous_value = 0;
\r
851 for (i = 0; i < fbconfigArraySize; i++)
\r
855 result = glXGetFBConfigAttrib(fgDisplay.Display,
\r
859 if (value > previous_value)
\r
861 temp_array[*size] = value;
\r
862 previous_value = value;
\r
867 array = malloc(sizeof(int) * (*size));
\r
868 for (i = 0; i < *size; i++)
\r
870 array[i] = temp_array[i];
\r
874 XFree(fbconfigArray);
\r
887 /*** END OF FILE ***/
\r