4
* Freeglut state query methods.
6
* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
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* Written by Pawel W. Olszta, <olszta@sourceforge.net>
8
* Creation date: Thu Dec 16 1999
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29
#include "freeglut_internal.h"
32
* TODO BEFORE THE STABLE RELEASE:
34
* glutGet() -- X11 tests passed, but check if all enums
35
* handled (what about Win32?)
36
* glutDeviceGet() -- X11 tests passed, but check if all enums
37
* handled (what about Win32?)
38
* glutGetModifiers() -- OK, but could also remove the limitation
39
* glutLayerGet() -- what about GLUT_NORMAL_DAMAGED?
41
* The fail-on-call policy will help adding the most needed things imho.
44
/* -- LOCAL DEFINITIONS ---------------------------------------------------- */
46
/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
48
#if TARGET_HOST_POSIX_X11
50
* Queries the GL context about some attributes
52
static int fghGetConfig( int attribute )
55
int result; /* Not checked */
57
if( fgStructure.CurrentWindow )
58
result = glXGetFBConfigAttrib( fgDisplay.Display,
59
*(fgStructure.CurrentWindow->Window.FBConfig),
67
/* Check if the window is in full screen state. */
68
static int fghCheckFullScreen(void)
70
#if TARGET_HOST_POSIX_X11
71
return fgStructure.CurrentWindow->State.IsFullscreen;
77
/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
80
* General settings assignment method
82
void FGAPIENTRY glutSetOption( GLenum eWhat, int value )
84
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetOption" );
87
* XXX In chronological code add order. (WHY in that order?)
91
case GLUT_INIT_WINDOW_X:
92
fgState.Position.X = (GLint)value;
95
case GLUT_INIT_WINDOW_Y:
96
fgState.Position.Y = (GLint)value;
99
case GLUT_INIT_WINDOW_WIDTH:
100
fgState.Size.X = (GLint)value;
103
case GLUT_INIT_WINDOW_HEIGHT:
104
fgState.Size.Y = (GLint)value;
107
case GLUT_INIT_DISPLAY_MODE:
108
fgState.DisplayMode = (unsigned int)value;
111
case GLUT_ACTION_ON_WINDOW_CLOSE:
112
fgState.ActionOnWindowClose = value;
115
case GLUT_RENDERING_CONTEXT:
116
fgState.UseCurrentContext =
117
( value == GLUT_USE_CURRENT_CONTEXT ) ? GL_TRUE : GL_FALSE;
120
case GLUT_DIRECT_RENDERING:
121
fgState.DirectContext = value;
124
case GLUT_WINDOW_CURSOR:
125
if( fgStructure.CurrentWindow != NULL )
126
fgStructure.CurrentWindow->State.Cursor = value;
130
fgState.AuxiliaryBufferNumber = value;
133
case GLUT_MULTISAMPLE:
134
fgState.SampleNumber = value;
138
fgWarning( "glutSetOption(): missing enum handle %d", eWhat );
143
#if TARGET_HOST_MS_WINDOWS
144
/* The following include file is available from SGI but is not standard:
145
* #include <GL/wglext.h>
146
* So we copy the necessary parts out of it to support the multisampling query
148
#define WGL_SAMPLES_ARB 0x2042
153
* General settings query method
155
int FGAPIENTRY glutGet( GLenum eWhat )
157
#if TARGET_HOST_MS_WINDOWS
159
GLboolean boolValue ;
166
case GLUT_INIT_STATE:
167
return fgState.Initialised;
169
case GLUT_ELAPSED_TIME:
170
return fgElapsedTime();
173
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGet" );
175
/* XXX In chronological code add order. (WHY in that order?) */
178
/* Following values are stored in fgState and fgDisplay global structures */
179
case GLUT_SCREEN_WIDTH: return fgDisplay.ScreenWidth ;
180
case GLUT_SCREEN_HEIGHT: return fgDisplay.ScreenHeight ;
181
case GLUT_SCREEN_WIDTH_MM: return fgDisplay.ScreenWidthMM ;
182
case GLUT_SCREEN_HEIGHT_MM: return fgDisplay.ScreenHeightMM;
183
case GLUT_INIT_WINDOW_X: return fgState.Position.Use ?
184
fgState.Position.X : -1 ;
185
case GLUT_INIT_WINDOW_Y: return fgState.Position.Use ?
186
fgState.Position.Y : -1 ;
187
case GLUT_INIT_WINDOW_WIDTH: return fgState.Size.Use ?
188
fgState.Size.X : -1 ;
189
case GLUT_INIT_WINDOW_HEIGHT: return fgState.Size.Use ?
190
fgState.Size.Y : -1 ;
191
case GLUT_INIT_DISPLAY_MODE: return fgState.DisplayMode ;
192
case GLUT_INIT_MAJOR_VERSION: return fgState.MajorVersion ;
193
case GLUT_INIT_MINOR_VERSION: return fgState.MinorVersion ;
194
case GLUT_INIT_FLAGS: return fgState.ContextFlags ;
195
case GLUT_INIT_PROFILE: return fgState.ContextProfile ;
197
#if TARGET_HOST_POSIX_X11
199
* The window/context specific queries are handled mostly by
202
case GLUT_WINDOW_NUM_SAMPLES:
203
#ifdef GLX_VERSION_1_3
204
glGetIntegerv(GL_SAMPLES, &nsamples);
209
* The rest of GLX queries under X are general enough to use a macro to
212
# define GLX_QUERY(a,b) case a: return fghGetConfig( b );
214
GLX_QUERY( GLUT_WINDOW_RGBA, GLX_RGBA );
215
GLX_QUERY( GLUT_WINDOW_DOUBLEBUFFER, GLX_DOUBLEBUFFER );
216
GLX_QUERY( GLUT_WINDOW_BUFFER_SIZE, GLX_BUFFER_SIZE );
217
GLX_QUERY( GLUT_WINDOW_STENCIL_SIZE, GLX_STENCIL_SIZE );
218
GLX_QUERY( GLUT_WINDOW_DEPTH_SIZE, GLX_DEPTH_SIZE );
219
GLX_QUERY( GLUT_WINDOW_RED_SIZE, GLX_RED_SIZE );
220
GLX_QUERY( GLUT_WINDOW_GREEN_SIZE, GLX_GREEN_SIZE );
221
GLX_QUERY( GLUT_WINDOW_BLUE_SIZE, GLX_BLUE_SIZE );
222
GLX_QUERY( GLUT_WINDOW_ALPHA_SIZE, GLX_ALPHA_SIZE );
223
GLX_QUERY( GLUT_WINDOW_ACCUM_RED_SIZE, GLX_ACCUM_RED_SIZE );
224
GLX_QUERY( GLUT_WINDOW_ACCUM_GREEN_SIZE, GLX_ACCUM_GREEN_SIZE );
225
GLX_QUERY( GLUT_WINDOW_ACCUM_BLUE_SIZE, GLX_ACCUM_BLUE_SIZE );
226
GLX_QUERY( GLUT_WINDOW_ACCUM_ALPHA_SIZE, GLX_ACCUM_ALPHA_SIZE );
227
GLX_QUERY( GLUT_WINDOW_STEREO, GLX_STEREO );
231
/* Colormap size is handled in a bit different way than all the rest */
232
case GLUT_WINDOW_COLORMAP_SIZE:
233
if( (fghGetConfig( GLX_RGBA )) || (fgStructure.CurrentWindow == NULL) )
236
* We've got a RGBA visual, so there is no colormap at all.
237
* The other possibility is that we have no current window set.
243
const GLXFBConfig * fbconfig =
244
fgStructure.CurrentWindow->Window.FBConfig;
246
XVisualInfo * visualInfo =
247
glXGetVisualFromFBConfig( fgDisplay.Display, *fbconfig );
249
const int result = visualInfo->visual->map_entries;
257
* Those calls are somewhat similiar, as they use XGetWindowAttributes()
262
case GLUT_WINDOW_BORDER_WIDTH:
263
case GLUT_WINDOW_HEADER_HEIGHT:
268
if( fgStructure.CurrentWindow == NULL )
271
XTranslateCoordinates(
273
fgStructure.CurrentWindow->Window.Handle,
274
fgDisplay.RootWindow,
279
case GLUT_WINDOW_X: return x;
280
case GLUT_WINDOW_Y: return y;
285
XTranslateCoordinates(
287
fgStructure.CurrentWindow->Window.Handle,
288
w, 0, 0, &x, &y, &w);
292
case GLUT_WINDOW_BORDER_WIDTH: return x;
293
case GLUT_WINDOW_HEADER_HEIGHT: return y;
297
case GLUT_WINDOW_WIDTH:
298
case GLUT_WINDOW_HEIGHT:
300
XWindowAttributes winAttributes;
302
if( fgStructure.CurrentWindow == NULL )
304
XGetWindowAttributes(
306
fgStructure.CurrentWindow->Window.Handle,
311
case GLUT_WINDOW_WIDTH: return winAttributes.width ;
312
case GLUT_WINDOW_HEIGHT: return winAttributes.height ;
316
/* I do not know yet if there will be a fgChooseVisual() function for Win32 */
317
case GLUT_DISPLAY_MODE_POSSIBLE:
319
/* We should not have to call fgChooseFBConfig again here. */
320
GLXFBConfig * fbconfig;
323
fbconfig = fgChooseFBConfig();
325
if (fbconfig == NULL)
338
/* This is system-dependant */
339
case GLUT_WINDOW_FORMAT_ID:
340
if( fgStructure.CurrentWindow == NULL )
343
return fghGetConfig( GLX_VISUAL_ID );
345
#elif TARGET_HOST_MS_WINDOWS
347
case GLUT_WINDOW_NUM_SAMPLES:
348
glGetIntegerv(WGL_SAMPLES_ARB, &nsamples);
351
/* Handle the OpenGL inquiries */
352
case GLUT_WINDOW_RGBA:
353
#if defined(_WIN32_WCE)
354
boolValue = (GLboolean)0; /* WinCE doesn't support this feature */
356
glGetBooleanv ( GL_RGBA_MODE, &boolValue );
357
returnValue = boolValue ? 1 : 0;
360
case GLUT_WINDOW_DOUBLEBUFFER:
361
#if defined(_WIN32_WCE)
362
boolValue = (GLboolean)0; /* WinCE doesn't support this feature */
364
glGetBooleanv ( GL_DOUBLEBUFFER, &boolValue );
365
returnValue = boolValue ? 1 : 0;
368
case GLUT_WINDOW_STEREO:
369
#if defined(_WIN32_WCE)
370
boolValue = (GLboolean)0; /* WinCE doesn't support this feature */
372
glGetBooleanv ( GL_STEREO, &boolValue );
373
returnValue = boolValue ? 1 : 0;
377
case GLUT_WINDOW_RED_SIZE:
378
glGetIntegerv ( GL_RED_BITS, &returnValue );
380
case GLUT_WINDOW_GREEN_SIZE:
381
glGetIntegerv ( GL_GREEN_BITS, &returnValue );
383
case GLUT_WINDOW_BLUE_SIZE:
384
glGetIntegerv ( GL_BLUE_BITS, &returnValue );
386
case GLUT_WINDOW_ALPHA_SIZE:
387
glGetIntegerv ( GL_ALPHA_BITS, &returnValue );
389
case GLUT_WINDOW_ACCUM_RED_SIZE:
390
#if defined(_WIN32_WCE)
391
returnValue = 0; /* WinCE doesn't support this feature */
393
glGetIntegerv ( GL_ACCUM_RED_BITS, &returnValue );
396
case GLUT_WINDOW_ACCUM_GREEN_SIZE:
397
#if defined(_WIN32_WCE)
398
returnValue = 0; /* WinCE doesn't support this feature */
400
glGetIntegerv ( GL_ACCUM_GREEN_BITS, &returnValue );
403
case GLUT_WINDOW_ACCUM_BLUE_SIZE:
404
#if defined(_WIN32_WCE)
405
returnValue = 0; /* WinCE doesn't support this feature */
407
glGetIntegerv ( GL_ACCUM_BLUE_BITS, &returnValue );
410
case GLUT_WINDOW_ACCUM_ALPHA_SIZE:
411
#if defined(_WIN32_WCE)
412
returnValue = 0; /* WinCE doesn't support this feature */
414
glGetIntegerv ( GL_ACCUM_ALPHA_BITS, &returnValue );
417
case GLUT_WINDOW_DEPTH_SIZE:
418
glGetIntegerv ( GL_DEPTH_BITS, &returnValue );
421
case GLUT_WINDOW_BUFFER_SIZE:
422
returnValue = 1 ; /* ????? */
424
case GLUT_WINDOW_STENCIL_SIZE:
425
returnValue = 0 ; /* ????? */
430
case GLUT_WINDOW_WIDTH:
431
case GLUT_WINDOW_HEIGHT:
434
* There is considerable confusion about the "right thing to
435
* do" concerning window size and position. GLUT itself is
436
* not consistent between Windows and UNIX/X11; since
437
* platform independence is a virtue for "freeglut", we
438
* decided to break with GLUT's behaviour.
440
* Under UNIX/X11, it is apparently not possible to get the
441
* window border sizes in order to subtract them off the
442
* window's initial position until some time after the window
443
* has been created. Therefore we decided on the following
444
* behaviour, both under Windows and under UNIX/X11:
445
* - When you create a window with position (x,y) and size
446
* (w,h), the upper left hand corner of the outside of the
447
* window is at (x,y) and the size of the drawable area is
449
* - When you query the size and position of the window--as
450
* is happening here for Windows--"freeglut" will return
451
* the size of the drawable area--the (w,h) that you
452
* specified when you created the window--and the coordinates
453
* of the upper left hand corner of the drawable
454
* area--which is NOT the (x,y) you specified.
459
freeglut_return_val_if_fail( fgStructure.CurrentWindow != NULL, 0 );
462
* We need to call GetWindowRect() first...
463
* (this returns the pixel coordinates of the outside of the window)
465
GetWindowRect( fgStructure.CurrentWindow->Window.Handle, &winRect );
467
/* ...then we've got to correct the results we've just received... */
469
#if !defined(_WIN32_WCE)
470
if ( ( fgStructure.GameModeWindow != fgStructure.CurrentWindow ) && ( fgStructure.CurrentWindow->Parent == NULL ) &&
471
( ! fgStructure.CurrentWindow->IsMenu ) )
473
winRect.left += GetSystemMetrics( SM_CXSIZEFRAME );
474
winRect.right -= GetSystemMetrics( SM_CXSIZEFRAME );
475
winRect.top += GetSystemMetrics( SM_CYSIZEFRAME ) + GetSystemMetrics( SM_CYCAPTION );
476
winRect.bottom -= GetSystemMetrics( SM_CYSIZEFRAME );
478
#endif /* !defined(_WIN32_WCE) */
482
case GLUT_WINDOW_X: return winRect.left ;
483
case GLUT_WINDOW_Y: return winRect.top ;
484
case GLUT_WINDOW_WIDTH: return winRect.right - winRect.left;
485
case GLUT_WINDOW_HEIGHT: return winRect.bottom - winRect.top;
490
case GLUT_WINDOW_BORDER_WIDTH :
491
#if defined(_WIN32_WCE)
494
return GetSystemMetrics( SM_CXSIZEFRAME );
495
#endif /* !defined(_WIN32_WCE) */
497
case GLUT_WINDOW_HEADER_HEIGHT :
498
#if defined(_WIN32_WCE)
501
return GetSystemMetrics( SM_CYCAPTION );
502
#endif /* defined(_WIN32_WCE) */
504
case GLUT_DISPLAY_MODE_POSSIBLE:
505
#if defined(_WIN32_WCE)
508
return fgSetupPixelFormat( fgStructure.CurrentWindow, GL_TRUE,
510
#endif /* defined(_WIN32_WCE) */
513
case GLUT_WINDOW_FORMAT_ID:
514
#if !defined(_WIN32_WCE)
515
if( fgStructure.CurrentWindow != NULL )
516
return GetPixelFormat( fgStructure.CurrentWindow->Window.Device );
517
#endif /* defined(_WIN32_WCE) */
522
/* The window structure queries */
523
case GLUT_WINDOW_PARENT:
524
if( fgStructure.CurrentWindow == NULL ) return 0;
525
if( fgStructure.CurrentWindow->Parent == NULL ) return 0;
526
return fgStructure.CurrentWindow->Parent->ID;
528
case GLUT_WINDOW_NUM_CHILDREN:
529
if( fgStructure.CurrentWindow == NULL )
531
return fgListLength( &fgStructure.CurrentWindow->Children );
533
case GLUT_WINDOW_CURSOR:
534
if( fgStructure.CurrentWindow == NULL )
536
return fgStructure.CurrentWindow->State.Cursor;
538
case GLUT_MENU_NUM_ITEMS:
539
if( fgStructure.CurrentMenu == NULL )
541
return fgListLength( &fgStructure.CurrentMenu->Entries );
543
case GLUT_ACTION_ON_WINDOW_CLOSE:
544
return fgState.ActionOnWindowClose;
547
return VERSION_MAJOR * 10000 + VERSION_MINOR * 100 + VERSION_PATCH;
549
case GLUT_RENDERING_CONTEXT:
550
return fgState.UseCurrentContext ? GLUT_USE_CURRENT_CONTEXT
551
: GLUT_CREATE_NEW_CONTEXT;
553
case GLUT_DIRECT_RENDERING:
554
return fgState.DirectContext;
556
case GLUT_FULL_SCREEN:
557
return fghCheckFullScreen();
560
return fgState.AuxiliaryBufferNumber;
562
case GLUT_MULTISAMPLE:
563
return fgState.SampleNumber;
566
fgWarning( "glutGet(): missing enum handle %d", eWhat );
573
* Returns various device information.
575
int FGAPIENTRY glutDeviceGet( GLenum eWhat )
577
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDeviceGet" );
579
/* XXX WARNING: we are mostly lying in this function. */
582
case GLUT_HAS_KEYBOARD:
584
* Win32 is assumed a keyboard, and this cannot be queried,
585
* except for WindowsCE.
587
* X11 has a core keyboard by definition, although it can
588
* be present as a virtual/dummy keyboard. For now, there
589
* is no reliable way to tell if a real keyboard is present.
591
#if defined(_WIN32_CE)
592
return ( GetKeyboardStatus() & KBDI_KEYBOARD_PRESENT ) ? 1 : 0;
593
# if FREEGLUT_LIB_PRAGMAS
594
# pragma comment (lib,"Kbdui.lib")
601
#if TARGET_HOST_POSIX_X11
603
/* X11 has a mouse by definition */
607
case GLUT_NUM_MOUSE_BUTTONS:
608
/* We should be able to pass NULL when the last argument is zero,
609
* but at least one X server has a bug where this causes a segfault.
611
* In XFree86/Xorg servers, a mouse wheel is seen as two buttons
612
* rather than an Axis; "freeglut_main.c" expects this when
613
* checking for a wheel event.
617
int nbuttons = XGetPointerMapping(fgDisplay.Display, &map,0);
621
#elif TARGET_HOST_MS_WINDOWS
625
* MS Windows can be booted without a mouse.
627
return GetSystemMetrics( SM_MOUSEPRESENT );
629
case GLUT_NUM_MOUSE_BUTTONS:
630
# if defined(_WIN32_WCE)
633
return GetSystemMetrics( SM_CMOUSEBUTTONS );
637
case GLUT_HAS_JOYSTICK:
638
return fgJoystickDetect ();
640
case GLUT_OWNS_JOYSTICK:
641
return fgState.JoysticksInitialised;
643
case GLUT_JOYSTICK_POLL_RATE:
644
return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.JoystickPollRate : 0;
646
/* XXX The following two are only for Joystick 0 but this is an improvement */
647
case GLUT_JOYSTICK_BUTTONS:
648
return glutJoystickGetNumButtons ( 0 );
650
case GLUT_JOYSTICK_AXES:
651
return glutJoystickGetNumAxes ( 0 );
653
case GLUT_HAS_DIAL_AND_BUTTON_BOX:
654
return fgInputDeviceDetect ();
657
if ( fgState.InputDevsInitialised ) return 8;
660
case GLUT_NUM_BUTTON_BOX_BUTTONS:
663
case GLUT_HAS_SPACEBALL:
664
return fgHasSpaceball();
666
case GLUT_HAS_TABLET:
669
case GLUT_NUM_SPACEBALL_BUTTONS:
670
return fgSpaceballNumButtons();
672
case GLUT_NUM_TABLET_BUTTONS:
675
case GLUT_DEVICE_IGNORE_KEY_REPEAT:
676
return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.IgnoreKeyRepeat : 0;
678
case GLUT_DEVICE_KEY_REPEAT:
679
return fgState.KeyRepeat;
682
fgWarning( "glutDeviceGet(): missing enum handle %d", eWhat );
686
/* And now -- the failure. */
691
* This should return the current state of ALT, SHIFT and CTRL keys.
693
int FGAPIENTRY glutGetModifiers( void )
695
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetModifiers" );
696
if( fgState.Modifiers == INVALID_MODIFIERS )
698
fgWarning( "glutGetModifiers() called outside an input callback" );
702
return fgState.Modifiers;
706
* Return the state of the GLUT API overlay subsystem. A misery ;-)
708
int FGAPIENTRY glutLayerGet( GLenum eWhat )
710
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLayerGet" );
713
* This is easy as layers are not implemented ;-)
715
* XXX Can we merge the UNIX/X11 and WIN32 sections? Or
716
* XXX is overlay support planned?
721
#if TARGET_HOST_POSIX_X11
723
case GLUT_OVERLAY_POSSIBLE:
726
case GLUT_LAYER_IN_USE:
729
case GLUT_HAS_OVERLAY:
732
case GLUT_TRANSPARENT_INDEX:
734
* Return just anything, which is always defined as zero
740
case GLUT_NORMAL_DAMAGED:
741
/* XXX Actually I do not know. Maybe. */
744
case GLUT_OVERLAY_DAMAGED:
747
#elif TARGET_HOST_MS_WINDOWS
749
case GLUT_OVERLAY_POSSIBLE:
750
/* return fgSetupPixelFormat( fgStructure.CurrentWindow, GL_TRUE,
751
PFD_OVERLAY_PLANE ); */
754
case GLUT_LAYER_IN_USE:
757
case GLUT_HAS_OVERLAY:
760
case GLUT_TRANSPARENT_INDEX:
762
* Return just anything, which is always defined as zero
768
case GLUT_NORMAL_DAMAGED:
769
/* XXX Actually I do not know. Maybe. */
772
case GLUT_OVERLAY_DAMAGED:
777
fgWarning( "glutLayerGet(): missing enum handle %d", eWhat );
781
/* And fail. That's good. Programs do love failing. */
785
int * FGAPIENTRY glutGetModeValues(GLenum eWhat, int * size)
789
#if TARGET_HOST_POSIX_X11
791
GLXFBConfig * fbconfigArray; /* Array of FBConfigs */
792
int fbconfigArraySize; /* Number of FBConfigs in the array */
793
int attribute_name = 0;
796
FREEGLUT_EXIT_IF_NOT_INITIALISED("glutGetModeValues");
803
#if TARGET_HOST_POSIX_X11
805
case GLUT_MULTISAMPLE:
807
attributes[0] = GLX_BUFFER_SIZE;
808
attributes[1] = GLX_DONT_CARE;
814
FBConfigs are now sorted by increasing number of auxiliary
815
buffers. We want at least one buffer.
817
attributes[2] = GLX_AUX_BUFFERS;
819
attributes[4] = None;
821
attribute_name = GLX_AUX_BUFFERS;
826
case GLUT_MULTISAMPLE:
827
attributes[2] = GLX_AUX_BUFFERS;
828
attributes[3] = GLX_DONT_CARE;
829
attributes[4] = GLX_SAMPLE_BUFFERS;
832
FBConfigs are now sorted by increasing number of samples per
833
pixel. We want at least one sample.
835
attributes[6] = GLX_SAMPLES;
837
attributes[8] = None;
839
attribute_name = GLX_SAMPLES;
844
fbconfigArray = glXChooseFBConfig(fgDisplay.Display,
849
if (fbconfigArray != NULL)
852
int result; /* Returned by glXGetFBConfigAttrib. Not checked. */
856
temp_array = malloc(sizeof(int) * fbconfigArraySize);
859
for (i = 0; i < fbconfigArraySize; i++)
863
result = glXGetFBConfigAttrib(fgDisplay.Display,
867
if (value > previous_value)
869
temp_array[*size] = value;
870
previous_value = value;
875
array = malloc(sizeof(int) * (*size));
876
for (i = 0; i < *size; i++)
878
array[i] = temp_array[i];
882
XFree(fbconfigArray);
895
/*** END OF FILE ***/