4 * X11-specific freeglut state query methods.
6 * Copyright (c) 2012 Stephen J. Baker. All Rights Reserved.
7 * Written by John F. Fay, <fayjf@sourceforge.net>
8 * Creation date: Sat Feb 4 2012
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included
18 * in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #include <GL/freeglut.h>
29 #include "fg_internal.h"
32 * Queries the GL context about some attributes
34 int fgPlatformGetConfig( int attribute )
37 int result; /* Not checked */
39 if( fgStructure.CurrentWindow )
40 result = glXGetFBConfigAttrib( fgDisplay.pDisplay.Display,
41 fgStructure.CurrentWindow->Window.pContext.FBConfig,
48 int fghPlatformGlutGetGLX ( GLenum eWhat )
53 * The window/context specific queries are handled mostly by
54 * fgPlatformGetConfig().
56 case GLUT_WINDOW_NUM_SAMPLES:
59 #ifdef GLX_VERSION_1_3
60 glGetIntegerv(GL_SAMPLES, &nsamples);
66 * The rest of GLX queries under X are general enough to use a macro to
69 # define GLX_QUERY(a,b) case a: return fgPlatformGetConfig( b );
71 GLX_QUERY( GLUT_WINDOW_RGBA, GLX_RGBA );
72 GLX_QUERY( GLUT_WINDOW_DOUBLEBUFFER, GLX_DOUBLEBUFFER );
73 GLX_QUERY( GLUT_WINDOW_BUFFER_SIZE, GLX_BUFFER_SIZE );
74 GLX_QUERY( GLUT_WINDOW_STENCIL_SIZE, GLX_STENCIL_SIZE );
75 GLX_QUERY( GLUT_WINDOW_DEPTH_SIZE, GLX_DEPTH_SIZE );
76 GLX_QUERY( GLUT_WINDOW_RED_SIZE, GLX_RED_SIZE );
77 GLX_QUERY( GLUT_WINDOW_GREEN_SIZE, GLX_GREEN_SIZE );
78 GLX_QUERY( GLUT_WINDOW_BLUE_SIZE, GLX_BLUE_SIZE );
79 GLX_QUERY( GLUT_WINDOW_ALPHA_SIZE, GLX_ALPHA_SIZE );
80 GLX_QUERY( GLUT_WINDOW_ACCUM_RED_SIZE, GLX_ACCUM_RED_SIZE );
81 GLX_QUERY( GLUT_WINDOW_ACCUM_GREEN_SIZE, GLX_ACCUM_GREEN_SIZE );
82 GLX_QUERY( GLUT_WINDOW_ACCUM_BLUE_SIZE, GLX_ACCUM_BLUE_SIZE );
83 GLX_QUERY( GLUT_WINDOW_ACCUM_ALPHA_SIZE, GLX_ACCUM_ALPHA_SIZE );
84 GLX_QUERY( GLUT_WINDOW_STEREO, GLX_STEREO );
88 /* I do not know yet if there will be a fgChooseVisual() function for Win32 */
89 case GLUT_DISPLAY_MODE_POSSIBLE:
91 /* We should not have to call fghChooseConfig again here. */
93 return fghChooseConfig(&config);
96 /* This is system-dependant */
97 case GLUT_WINDOW_FORMAT_ID:
98 if( fgStructure.CurrentWindow == NULL )
101 return fgPlatformGetConfig( GLX_VISUAL_ID );
104 fgWarning( "glutGet(): missing enum handle %d", eWhat );
111 int *fgPlatformGlutGetModeValues(GLenum eWhat, int *size)
116 GLXFBConfig * fbconfigArray; /* Array of FBConfigs */
117 int fbconfigArraySize; /* Number of FBConfigs in the array */
118 int attribute_name = 0;
126 case GLUT_MULTISAMPLE:
128 attributes[0] = GLX_BUFFER_SIZE;
129 attributes[1] = GLX_DONT_CARE;
135 FBConfigs are now sorted by increasing number of auxiliary
136 buffers. We want at least one buffer.
138 attributes[2] = GLX_AUX_BUFFERS;
140 attributes[4] = None;
142 attribute_name = GLX_AUX_BUFFERS;
147 case GLUT_MULTISAMPLE:
148 attributes[2] = GLX_AUX_BUFFERS;
149 attributes[3] = GLX_DONT_CARE;
150 attributes[4] = GLX_SAMPLE_BUFFERS;
153 FBConfigs are now sorted by increasing number of samples per
154 pixel. We want at least one sample.
156 attributes[6] = GLX_SAMPLES;
158 attributes[8] = None;
160 attribute_name = GLX_SAMPLES;
165 fbconfigArray = glXChooseFBConfig(fgDisplay.pDisplay.Display,
166 fgDisplay.pDisplay.Screen,
170 if (fbconfigArray != NULL)
173 int result; /* Returned by glXGetFBConfigAttrib. Not checked. */
177 temp_array = malloc(sizeof(int) * fbconfigArraySize);
180 for (i = 0; i < fbconfigArraySize; i++)
184 result = glXGetFBConfigAttrib(fgDisplay.pDisplay.Display,
188 if (value > previous_value)
190 temp_array[*size] = value;
191 previous_value = value;
196 array = malloc(sizeof(int) * (*size));
197 for (i = 0; i < *size; i++)
199 array[i] = temp_array[i];
203 XFree(fbconfigArray);