2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * "Fake" GLX API implemented in terms of the XMesa*() functions.
33 #define GLX_GLXEXT_PROTOTYPES
37 #include "main/context.h"
38 #include "main/config.h"
39 #include "main/macros.h"
40 #include "main/imports.h"
41 #include "main/version.h"
42 #include "state_tracker/st_context.h"
43 #include "state_tracker/st_public.h"
46 /* This indicates the client-side GLX API and GLX encoder version. */
47 #define CLIENT_MAJOR_VERSION 1
48 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
50 /* This indicates the server-side GLX decoder version.
51 * GLX 1.4 indicates OpenGL 1.3 support
53 #define SERVER_MAJOR_VERSION 1
54 #define SERVER_MINOR_VERSION 4
56 /* This is appended onto the glXGetClient/ServerString version strings. */
57 #define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING
59 /* Who implemented this GLX? */
60 #define VENDOR "Brian Paul"
63 "GLX_MESA_copy_sub_buffer " \
64 "GLX_MESA_pixmap_colormap " \
65 "GLX_MESA_release_buffers " \
66 "GLX_ARB_get_proc_address " \
67 "GLX_EXT_texture_from_pixmap " \
68 "GLX_EXT_visual_info " \
69 "GLX_EXT_visual_rating " \
70 /*"GLX_SGI_video_sync "*/ \
71 "GLX_SGIX_fbconfig " \
74 #define DEFAULT_DIRECT GL_TRUE
79 * The GLXContext typedef is defined as a pointer to this structure.
81 struct __GLXcontextRec
85 GLXDrawable currentDrawable
;
86 GLXDrawable currentReadable
;
89 XMesaContext xmesaContext
;
94 static pipe_tsd ContextTSD
;
96 /** Set current context for calling thread */
98 SetCurrentContext(GLXContext c
)
100 pipe_tsd_set(&ContextTSD
, c
);
103 /** Get current context for calling thread */
105 GetCurrentContext(void)
107 return pipe_tsd_get(&ContextTSD
);
112 /**********************************************************************/
113 /*** GLX Visual Code ***/
114 /**********************************************************************/
119 static XMesaVisual
*VisualTable
= NULL
;
120 static int NumVisuals
= 0;
124 /* Macro to handle c_class vs class field name in XVisualInfo struct */
125 #if defined(__cplusplus) || defined(c_plusplus)
126 #define CLASS c_class
134 * Test if the given XVisualInfo is usable for Mesa rendering.
137 is_usable_visual( XVisualInfo
*vinfo
)
139 switch (vinfo
->CLASS
) {
142 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
146 /* Any StaticColor/PseudoColor visual of at least 4 bits */
147 if (vinfo
->depth
>=4) {
155 /* Any depth of TrueColor or DirectColor works in RGB mode */
158 /* This should never happen */
165 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
166 * configuration in our list of GLX visuals.
169 save_glx_visual( Display
*dpy
, XVisualInfo
*vinfo
,
170 GLboolean rgbFlag
, GLboolean alphaFlag
, GLboolean dbFlag
,
171 GLboolean stereoFlag
,
172 GLint depth_size
, GLint stencil_size
,
173 GLint accumRedSize
, GLint accumGreenSize
,
174 GLint accumBlueSize
, GLint accumAlphaSize
,
175 GLint level
, GLint numAuxBuffers
)
177 GLboolean ximageFlag
= GL_TRUE
;
180 GLboolean comparePointers
;
183 /* Check if the MESA_BACK_BUFFER env var is set */
184 char *backbuffer
= _mesa_getenv("MESA_BACK_BUFFER");
186 if (backbuffer
[0]=='p' || backbuffer
[0]=='P') {
187 ximageFlag
= GL_FALSE
;
189 else if (backbuffer
[0]=='x' || backbuffer
[0]=='X') {
190 ximageFlag
= GL_TRUE
;
193 _mesa_warning(NULL
, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
199 /* stereo not supported */
203 if (stencil_size
> 0 && depth_size
> 0)
206 /* Comparing IDs uses less memory but sometimes fails. */
207 /* XXX revisit this after 3.0 is finished. */
208 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
209 comparePointers
= GL_TRUE
;
211 comparePointers
= GL_FALSE
;
213 /* Force the visual to have an alpha channel */
214 if (rgbFlag
&& _mesa_getenv("MESA_GLX_FORCE_ALPHA"))
217 /* First check if a matching visual is already in the list */
218 for (i
=0; i
<NumVisuals
; i
++) {
219 XMesaVisual v
= VisualTable
[i
];
220 if (v
->display
== dpy
221 && v
->mesa_visual
.level
== level
222 && v
->mesa_visual
.numAuxBuffers
== numAuxBuffers
223 && v
->ximage_flag
== ximageFlag
224 && v
->mesa_visual
.rgbMode
== rgbFlag
225 && v
->mesa_visual
.doubleBufferMode
== dbFlag
226 && v
->mesa_visual
.stereoMode
== stereoFlag
227 && (v
->mesa_visual
.alphaBits
> 0) == alphaFlag
228 && (v
->mesa_visual
.depthBits
>= depth_size
|| depth_size
== 0)
229 && (v
->mesa_visual
.stencilBits
>= stencil_size
|| stencil_size
== 0)
230 && (v
->mesa_visual
.accumRedBits
>= accumRedSize
|| accumRedSize
== 0)
231 && (v
->mesa_visual
.accumGreenBits
>= accumGreenSize
|| accumGreenSize
== 0)
232 && (v
->mesa_visual
.accumBlueBits
>= accumBlueSize
|| accumBlueSize
== 0)
233 && (v
->mesa_visual
.accumAlphaBits
>= accumAlphaSize
|| accumAlphaSize
== 0)) {
234 /* now either compare XVisualInfo pointers or visual IDs */
235 if ((!comparePointers
&& v
->visinfo
->visualid
== vinfo
->visualid
)
236 || (comparePointers
&& v
->vishandle
== vinfo
)) {
242 /* Create a new visual and add it to the list. */
244 xmvis
= XMesaCreateVisual( dpy
, vinfo
, rgbFlag
, alphaFlag
, dbFlag
,
245 stereoFlag
, ximageFlag
,
246 depth_size
, stencil_size
,
247 accumRedSize
, accumBlueSize
,
248 accumBlueSize
, accumAlphaSize
, 0, level
,
251 /* Save a copy of the pointer now so we can find this visual again
252 * if we need to search for it in find_glx_visual().
254 xmvis
->vishandle
= vinfo
;
255 /* Allocate more space for additional visual */
256 VisualTable
= (XMesaVisual
*) _mesa_realloc( VisualTable
,
257 sizeof(XMesaVisual
) * NumVisuals
,
258 sizeof(XMesaVisual
) * (NumVisuals
+ 1));
259 /* add xmvis to the list */
260 VisualTable
[NumVisuals
] = xmvis
;
262 /* XXX minor hack, because XMesaCreateVisual doesn't support an
263 * aux buffers parameter.
265 xmvis
->mesa_visual
.numAuxBuffers
= numAuxBuffers
;
272 * Return the default number of bits for the Z buffer.
273 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
274 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
275 * XXX probably do the same thing for stencil, accum, etc.
278 default_depth_bits(void)
281 const char *zEnv
= _mesa_getenv("MESA_GLX_DEPTH_BITS");
285 zBits
= DEFAULT_SOFTWARE_DEPTH_BITS
;
290 default_alpha_bits(void)
293 const char *aEnv
= _mesa_getenv("MESA_GLX_ALPHA_BITS");
302 default_accum_bits(void)
310 * Create a GLX visual from a regular XVisualInfo.
311 * This is called when Fake GLX is given an XVisualInfo which wasn't
312 * returned by glXChooseVisual. Since this is the first time we're
313 * considering this visual we'll take a guess at reasonable values
314 * for depth buffer size, stencil size, accum size, etc.
315 * This is the best we can do with a client-side emulation of GLX.
318 create_glx_visual( Display
*dpy
, XVisualInfo
*visinfo
)
320 GLint zBits
= default_depth_bits();
321 GLint accBits
= default_accum_bits();
322 GLboolean alphaFlag
= default_alpha_bits() > 0;
324 if (is_usable_visual( visinfo
)) {
325 /* Configure this visual as RGB, double-buffered, depth-buffered. */
326 /* This is surely wrong for some people's needs but what else */
327 /* can be done? They should use glXChooseVisual(). */
328 return save_glx_visual( dpy
, visinfo
,
330 alphaFlag
, /* alpha */
331 GL_TRUE
, /* double */
332 GL_FALSE
, /* stereo */
344 _mesa_warning(NULL
, "Mesa: error in glXCreateContext: bad visual\n");
352 * Find the GLX visual associated with an XVisualInfo.
355 find_glx_visual( Display
*dpy
, XVisualInfo
*vinfo
)
359 /* try to match visual id */
360 for (i
=0;i
<NumVisuals
;i
++) {
361 if (VisualTable
[i
]->display
==dpy
362 && VisualTable
[i
]->visinfo
->visualid
== vinfo
->visualid
) {
363 return VisualTable
[i
];
367 /* if that fails, try to match pointers */
368 for (i
=0;i
<NumVisuals
;i
++) {
369 if (VisualTable
[i
]->display
==dpy
&& VisualTable
[i
]->vishandle
==vinfo
) {
370 return VisualTable
[i
];
379 * Try to get an X visual which matches the given arguments.
382 get_visual( Display
*dpy
, int scr
, unsigned int depth
, int xclass
)
384 XVisualInfo temp
, *vis
;
387 unsigned int default_depth
;
390 mask
= VisualScreenMask
| VisualDepthMask
| VisualClassMask
;
395 default_depth
= DefaultDepth(dpy
,scr
);
396 default_class
= DefaultVisual(dpy
,scr
)->CLASS
;
398 if (depth
==default_depth
&& xclass
==default_class
) {
399 /* try to get root window's visual */
400 temp
.visualid
= DefaultVisual(dpy
,scr
)->visualid
;
401 mask
|= VisualIDMask
;
404 vis
= XGetVisualInfo( dpy
, mask
, &temp
, &n
);
406 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
407 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
408 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
410 if (vis
&& depth
> 24 && (xclass
==TrueColor
|| xclass
==DirectColor
)) {
411 if (_mesa_bitcount((GLuint
) vis
->red_mask
) <= 8 &&
412 _mesa_bitcount((GLuint
) vis
->green_mask
) <= 8 &&
413 _mesa_bitcount((GLuint
) vis
->blue_mask
) <= 8) {
427 * Retrieve the value of the given environment variable and find
428 * the X visual which matches it.
429 * Input: dpy - the display
430 * screen - the screen number
431 * varname - the name of the environment variable
432 * Return: an XVisualInfo pointer to NULL if error.
435 get_env_visual(Display
*dpy
, int scr
, const char *varname
)
437 char value
[100], type
[100];
438 int depth
, xclass
= -1;
441 if (!_mesa_getenv( varname
)) {
445 strncpy( value
, _mesa_getenv(varname
), 100 );
448 sscanf( value
, "%s %d", type
, &depth
);
450 if (strcmp(type
,"TrueColor")==0) xclass
= TrueColor
;
451 else if (strcmp(type
,"DirectColor")==0) xclass
= DirectColor
;
452 else if (strcmp(type
,"PseudoColor")==0) xclass
= PseudoColor
;
453 else if (strcmp(type
,"StaticColor")==0) xclass
= StaticColor
;
454 else if (strcmp(type
,"GrayScale")==0) xclass
= GrayScale
;
455 else if (strcmp(type
,"StaticGray")==0) xclass
= StaticGray
;
457 if (xclass
>-1 && depth
>0) {
458 vis
= get_visual( dpy
, scr
, depth
, xclass
);
464 _mesa_warning(NULL
, "GLX unable to find visual class=%s, depth=%d.",
473 * Select an X visual which satisfies the RGBA flag and minimum depth.
475 * screen - X display and screen number
476 * min_depth - minimum visual depth
477 * preferred_class - preferred GLX visual class or DONT_CARE
478 * Return: pointer to an XVisualInfo or NULL.
481 choose_x_visual( Display
*dpy
, int screen
, int min_depth
,
482 int preferred_class
)
485 int xclass
, visclass
= 0;
488 /* First see if the MESA_RGB_VISUAL env var is defined */
489 vis
= get_env_visual( dpy
, screen
, "MESA_RGB_VISUAL" );
493 /* Otherwise, search for a suitable visual */
494 if (preferred_class
==DONT_CARE
) {
495 for (xclass
=0;xclass
<6;xclass
++) {
497 case 0: visclass
= TrueColor
; break;
498 case 1: visclass
= DirectColor
; break;
499 case 2: visclass
= PseudoColor
; break;
500 case 3: visclass
= StaticColor
; break;
501 case 4: visclass
= GrayScale
; break;
502 case 5: visclass
= StaticGray
; break;
505 /* start with shallowest */
506 for (depth
=0;depth
<=32;depth
++) {
507 if (visclass
==TrueColor
&& depth
==8) {
508 /* Special case: try to get 8-bit PseudoColor before */
509 /* 8-bit TrueColor */
510 vis
= get_visual( dpy
, screen
, 8, PseudoColor
);
515 vis
= get_visual( dpy
, screen
, depth
, visclass
);
522 /* start with deepest */
523 for (depth
=32;depth
>=min_depth
;depth
--) {
524 if (visclass
==TrueColor
&& depth
==8) {
525 /* Special case: try to get 8-bit PseudoColor before */
526 /* 8-bit TrueColor */
527 vis
= get_visual( dpy
, screen
, 8, PseudoColor
);
532 vis
= get_visual( dpy
, screen
, depth
, visclass
);
541 /* search for a specific visual class */
542 switch (preferred_class
) {
543 case GLX_TRUE_COLOR_EXT
: visclass
= TrueColor
; break;
544 case GLX_DIRECT_COLOR_EXT
: visclass
= DirectColor
; break;
545 case GLX_PSEUDO_COLOR_EXT
: visclass
= PseudoColor
; break;
546 case GLX_STATIC_COLOR_EXT
: visclass
= StaticColor
; break;
547 case GLX_GRAY_SCALE_EXT
: visclass
= GrayScale
; break;
548 case GLX_STATIC_GRAY_EXT
: visclass
= StaticGray
; break;
549 default: return NULL
;
552 /* start with shallowest */
553 for (depth
=0;depth
<=32;depth
++) {
554 vis
= get_visual( dpy
, screen
, depth
, visclass
);
561 /* start with deepest */
562 for (depth
=32;depth
>=min_depth
;depth
--) {
563 vis
= get_visual( dpy
, screen
, depth
, visclass
);
571 /* didn't find a visual */
578 /**********************************************************************/
579 /*** Display-related functions ***/
580 /**********************************************************************/
584 * Free all XMesaVisuals which are associated with the given display.
587 destroy_visuals_on_display(Display
*dpy
)
590 for (i
= 0; i
< NumVisuals
; i
++) {
591 if (VisualTable
[i
]->display
== dpy
) {
592 /* remove this visual */
594 free(VisualTable
[i
]);
595 for (j
= i
; j
< NumVisuals
- 1; j
++)
596 VisualTable
[j
] = VisualTable
[j
+ 1];
604 * Called from XCloseDisplay() to let us free our display-related data.
607 close_display_callback(Display
*dpy
, XExtCodes
*codes
)
609 destroy_visuals_on_display(dpy
);
610 xmesa_destroy_buffers_on_display(dpy
);
616 * Look for the named extension on given display and return a pointer
617 * to the _XExtension data, or NULL if extension not found.
620 lookup_extension(Display
*dpy
, const char *extName
)
623 for (ext
= dpy
->ext_procs
; ext
; ext
= ext
->next
) {
624 if (ext
->name
&& strcmp(ext
->name
, extName
) == 0) {
633 * Whenever we're given a new Display pointer, call this function to
634 * register our close_display_callback function.
637 register_with_display(Display
*dpy
)
639 const char *extName
= "MesaGLX";
642 ext
= lookup_extension(dpy
, extName
);
644 XExtCodes
*c
= XAddExtension(dpy
);
645 ext
= dpy
->ext_procs
; /* new extension is at head of list */
646 assert(c
->extension
== ext
->codes
.extension
);
648 ext
->name
= _mesa_strdup(extName
);
649 ext
->close_display
= close_display_callback
;
654 /**********************************************************************/
655 /*** Begin Fake GLX API Functions ***/
656 /**********************************************************************/
660 * Helper used by glXChooseVisual and glXChooseFBConfig.
661 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
663 * In either case, the attribute list is terminated with the value 'None'.
666 choose_visual( Display
*dpy
, int screen
, const int *list
, GLboolean fbConfig
)
668 const GLboolean rgbModeDefault
= fbConfig
;
669 const int *parselist
;
672 int min_red
=0, min_green
=0, min_blue
=0;
673 GLboolean rgb_flag
= rgbModeDefault
;
674 GLboolean alpha_flag
= GL_FALSE
;
675 GLboolean double_flag
= GL_FALSE
;
676 GLboolean stereo_flag
= GL_FALSE
;
677 GLint depth_size
= 0;
678 GLint stencil_size
= 0;
679 GLint accumRedSize
= 0;
680 GLint accumGreenSize
= 0;
681 GLint accumBlueSize
= 0;
682 GLint accumAlphaSize
= 0;
684 int visual_type
= DONT_CARE
;
685 int trans_type
= DONT_CARE
;
686 int trans_value
= DONT_CARE
;
687 GLint caveat
= DONT_CARE
;
688 XMesaVisual xmvis
= NULL
;
689 int desiredVisualID
= -1;
698 switch (*parselist
) {
709 case GLX_BUFFER_SIZE
:
711 min_ci
= *parselist
++;
715 level
= *parselist
++;
727 case GLX_DOUBLEBUFFER
:
730 double_flag
= *parselist
++;
733 double_flag
= GL_TRUE
;
739 stereo_flag
= *parselist
++;
742 stereo_flag
= GL_TRUE
;
745 case GLX_AUX_BUFFERS
:
747 numAux
= *parselist
++;
748 if (numAux
> MAX_AUX_BUFFERS
)
753 min_red
= *parselist
++;
757 min_green
= *parselist
++;
761 min_blue
= *parselist
++;
766 GLint size
= *parselist
++;
767 alpha_flag
= size
? GL_TRUE
: GL_FALSE
;
772 depth_size
= *parselist
++;
774 case GLX_STENCIL_SIZE
:
776 stencil_size
= *parselist
++;
778 case GLX_ACCUM_RED_SIZE
:
781 GLint size
= *parselist
++;
782 accumRedSize
= MAX2( accumRedSize
, size
);
785 case GLX_ACCUM_GREEN_SIZE
:
788 GLint size
= *parselist
++;
789 accumGreenSize
= MAX2( accumGreenSize
, size
);
792 case GLX_ACCUM_BLUE_SIZE
:
795 GLint size
= *parselist
++;
796 accumBlueSize
= MAX2( accumBlueSize
, size
);
799 case GLX_ACCUM_ALPHA_SIZE
:
802 GLint size
= *parselist
++;
803 accumAlphaSize
= MAX2( accumAlphaSize
, size
);
808 * GLX_EXT_visual_info extension
810 case GLX_X_VISUAL_TYPE_EXT
:
812 visual_type
= *parselist
++;
814 case GLX_TRANSPARENT_TYPE_EXT
:
816 trans_type
= *parselist
++;
818 case GLX_TRANSPARENT_INDEX_VALUE_EXT
:
820 trans_value
= *parselist
++;
822 case GLX_TRANSPARENT_RED_VALUE_EXT
:
823 case GLX_TRANSPARENT_GREEN_VALUE_EXT
:
824 case GLX_TRANSPARENT_BLUE_VALUE_EXT
:
825 case GLX_TRANSPARENT_ALPHA_VALUE_EXT
:
832 * GLX_EXT_visual_info extension
834 case GLX_VISUAL_CAVEAT_EXT
:
836 caveat
= *parselist
++; /* ignored for now */
840 * GLX_ARB_multisample
842 case GLX_SAMPLE_BUFFERS_ARB
:
843 /* ms not supported */
845 case GLX_SAMPLES_ARB
:
846 /* ms not supported */
852 case GLX_RENDER_TYPE
:
856 if (*parselist
& GLX_RGBA_BIT
) {
859 else if (*parselist
& GLX_COLOR_INDEX_BIT
) {
862 else if (*parselist
== 0) {
867 case GLX_DRAWABLE_TYPE
:
871 if (*parselist
& ~(GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
)) {
872 return NULL
; /* bad bit */
876 case GLX_FBCONFIG_ID
:
880 desiredVisualID
= *parselist
++;
882 case GLX_X_RENDERABLE
:
889 #ifdef GLX_EXT_texture_from_pixmap
890 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
891 parselist
++; /*skip*/
893 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
894 parselist
++; /*skip*/
896 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
897 parselist
++; /*skip*/
899 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
901 if (*parselist
& ~(GLX_TEXTURE_1D_BIT_EXT
|
902 GLX_TEXTURE_2D_BIT_EXT
|
903 GLX_TEXTURE_RECTANGLE_BIT_EXT
)) {
908 case GLX_Y_INVERTED_EXT
:
909 parselist
++; /*skip*/
918 /* undefined attribute */
919 _mesa_warning(NULL
, "unexpected attrib 0x%x in choose_visual()",
929 * Since we're only simulating the GLX extension this function will never
930 * find any real GL visuals. Instead, all we can do is try to find an RGB
931 * or CI visual of appropriate depth. Other requested attributes such as
932 * double buffering, depth buffer, etc. will be associated with the X
933 * visual and stored in the VisualTable[].
935 if (desiredVisualID
!= -1) {
936 /* try to get a specific visual, by visualID */
939 temp
.visualid
= desiredVisualID
;
940 temp
.screen
= screen
;
941 vis
= XGetVisualInfo(dpy
, VisualIDMask
| VisualScreenMask
, &temp
, &n
);
943 /* give the visual some useful GLX attributes */
944 double_flag
= GL_TRUE
;
949 /* normal color planes */
950 /* Get an RGB visual */
951 int min_rgb
= min_red
+ min_green
+ min_blue
;
952 if (min_rgb
>1 && min_rgb
<8) {
953 /* a special case to be sure we can get a monochrome visual */
956 vis
= choose_x_visual( dpy
, screen
, min_rgb
, visual_type
);
959 _mesa_warning(NULL
, "overlay not supported");
964 /* Note: we're not exactly obeying the glXChooseVisual rules here.
965 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
966 * largest depth buffer size, which is 32bits/value. Instead, we
967 * return 16 to maintain performance with earlier versions of Mesa.
969 if (stencil_size
> 0)
970 depth_size
= 24; /* if Z and stencil, always use 24+8 format */
971 else if (depth_size
> 24)
973 else if (depth_size
> 16)
975 else if (depth_size
> 0) {
976 depth_size
= default_depth_bits();
980 alpha_flag
= default_alpha_bits() > 0;
983 /* we only support one size of stencil and accum buffers. */
984 if (stencil_size
> 0)
985 stencil_size
= STENCIL_BITS
;
987 if (accumRedSize
> 0 ||
988 accumGreenSize
> 0 ||
990 accumAlphaSize
> 0) {
994 accumBlueSize
= default_accum_bits();
996 accumAlphaSize
= alpha_flag
? accumRedSize
: 0;
999 xmvis
= save_glx_visual( dpy
, vis
, rgb_flag
, alpha_flag
, double_flag
,
1000 stereo_flag
, depth_size
, stencil_size
,
1001 accumRedSize
, accumGreenSize
,
1002 accumBlueSize
, accumAlphaSize
, level
, numAux
);
1009 PUBLIC XVisualInfo
*
1010 glXChooseVisual( Display
*dpy
, int screen
, int *list
)
1014 /* register ourselves as an extension on this display */
1015 register_with_display(dpy
);
1017 xmvis
= choose_visual(dpy
, screen
, list
, GL_FALSE
);
1019 /* create a new vishandle - the cached one may be stale */
1020 xmvis
->vishandle
= (XVisualInfo
*) malloc(sizeof(XVisualInfo
));
1021 if (xmvis
->vishandle
) {
1022 memcpy(xmvis
->vishandle
, xmvis
->visinfo
, sizeof(XVisualInfo
));
1024 return xmvis
->vishandle
;
1032 glXCreateContext( Display
*dpy
, XVisualInfo
*visinfo
,
1033 GLXContext share_list
, Bool direct
)
1037 GLXContext shareCtx
= share_list
;
1039 if (!dpy
|| !visinfo
)
1042 glxCtx
= CALLOC_STRUCT(__GLXcontextRec
);
1046 /* deallocate unused windows/buffers */
1048 XMesaGarbageCollect();
1051 xmvis
= find_glx_visual( dpy
, visinfo
);
1053 /* This visual wasn't found with glXChooseVisual() */
1054 xmvis
= create_glx_visual( dpy
, visinfo
);
1056 /* unusable visual */
1062 glxCtx
->xmesaContext
= XMesaCreateContext(xmvis
,
1063 shareCtx
? shareCtx
->xmesaContext
: NULL
);
1064 if (!glxCtx
->xmesaContext
) {
1069 glxCtx
->isDirect
= DEFAULT_DIRECT
;
1070 glxCtx
->currentDpy
= dpy
;
1071 glxCtx
->xid
= (XID
) glxCtx
; /* self pointer */
1077 /* XXX these may have to be removed due to thread-safety issues. */
1078 static GLXContext MakeCurrent_PrevContext
= 0;
1079 static GLXDrawable MakeCurrent_PrevDrawable
= 0;
1080 static GLXDrawable MakeCurrent_PrevReadable
= 0;
1081 static XMesaBuffer MakeCurrent_PrevDrawBuffer
= 0;
1082 static XMesaBuffer MakeCurrent_PrevReadBuffer
= 0;
1085 /* GLX 1.3 and later */
1087 glXMakeContextCurrent( Display
*dpy
, GLXDrawable draw
,
1088 GLXDrawable read
, GLXContext ctx
)
1090 GLXContext glxCtx
= ctx
;
1091 static boolean firsttime
= 1, no_rast
= 0;
1094 no_rast
= getenv("SP_NO_RAST") != NULL
;
1098 if (ctx
&& draw
&& read
) {
1099 XMesaBuffer drawBuffer
, readBuffer
;
1100 XMesaContext xmctx
= glxCtx
->xmesaContext
;
1102 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1103 if (ctx
== MakeCurrent_PrevContext
1104 && draw
== MakeCurrent_PrevDrawable
) {
1105 drawBuffer
= MakeCurrent_PrevDrawBuffer
;
1108 drawBuffer
= XMesaFindBuffer( dpy
, draw
);
1111 /* drawable must be a new window! */
1112 drawBuffer
= XMesaCreateWindowBuffer( xmctx
->xm_visual
, draw
);
1114 /* Out of memory, or context/drawable depth mismatch */
1119 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1120 if (ctx
== MakeCurrent_PrevContext
1121 && read
== MakeCurrent_PrevReadable
) {
1122 readBuffer
= MakeCurrent_PrevReadBuffer
;
1125 readBuffer
= XMesaFindBuffer( dpy
, read
);
1128 /* drawable must be a new window! */
1129 readBuffer
= XMesaCreateWindowBuffer( xmctx
->xm_visual
, read
);
1131 /* Out of memory, or context/drawable depth mismatch */
1137 MakeCurrent_PrevContext
== ctx
&&
1138 MakeCurrent_PrevDrawable
== draw
&&
1139 MakeCurrent_PrevReadable
== read
&&
1140 MakeCurrent_PrevDrawBuffer
== drawBuffer
&&
1141 MakeCurrent_PrevReadBuffer
== readBuffer
)
1144 MakeCurrent_PrevContext
= ctx
;
1145 MakeCurrent_PrevDrawable
= draw
;
1146 MakeCurrent_PrevReadable
= read
;
1147 MakeCurrent_PrevDrawBuffer
= drawBuffer
;
1148 MakeCurrent_PrevReadBuffer
= readBuffer
;
1150 /* Now make current! */
1151 if (XMesaMakeCurrent2(xmctx
, drawBuffer
, readBuffer
)) {
1152 ctx
->currentDpy
= dpy
;
1153 ctx
->currentDrawable
= draw
;
1154 ctx
->currentReadable
= read
;
1155 SetCurrentContext(ctx
);
1162 else if (!ctx
&& !draw
&& !read
) {
1163 /* release current context w/out assigning new one. */
1164 XMesaMakeCurrent2( NULL
, NULL
, NULL
);
1165 MakeCurrent_PrevContext
= 0;
1166 MakeCurrent_PrevDrawable
= 0;
1167 MakeCurrent_PrevReadable
= 0;
1168 MakeCurrent_PrevDrawBuffer
= 0;
1169 MakeCurrent_PrevReadBuffer
= 0;
1170 SetCurrentContext(NULL
);
1174 /* The args must either all be non-zero or all zero.
1183 glXMakeCurrent( Display
*dpy
, GLXDrawable drawable
, GLXContext ctx
)
1185 return glXMakeContextCurrent( dpy
, drawable
, drawable
, ctx
);
1190 glXGetCurrentContext(void)
1192 return GetCurrentContext();
1197 glXGetCurrentDisplay(void)
1199 GLXContext glxCtx
= glXGetCurrentContext();
1201 return glxCtx
? glxCtx
->currentDpy
: NULL
;
1206 glXGetCurrentDisplayEXT(void)
1208 return glXGetCurrentDisplay();
1213 glXGetCurrentDrawable(void)
1215 GLXContext gc
= glXGetCurrentContext();
1216 return gc
? gc
->currentDrawable
: 0;
1221 glXGetCurrentReadDrawable(void)
1223 GLXContext gc
= glXGetCurrentContext();
1224 return gc
? gc
->currentReadable
: 0;
1229 glXGetCurrentReadDrawableSGI(void)
1231 return glXGetCurrentReadDrawable();
1236 glXCreateGLXPixmap( Display
*dpy
, XVisualInfo
*visinfo
, Pixmap pixmap
)
1241 v
= find_glx_visual( dpy
, visinfo
);
1243 v
= create_glx_visual( dpy
, visinfo
);
1245 /* unusable visual */
1250 b
= XMesaCreatePixmapBuffer( v
, pixmap
, 0 );
1258 /*** GLX_MESA_pixmap_colormap ***/
1261 glXCreateGLXPixmapMESA( Display
*dpy
, XVisualInfo
*visinfo
,
1262 Pixmap pixmap
, Colormap cmap
)
1267 v
= find_glx_visual( dpy
, visinfo
);
1269 v
= create_glx_visual( dpy
, visinfo
);
1271 /* unusable visual */
1276 b
= XMesaCreatePixmapBuffer( v
, pixmap
, cmap
);
1285 glXDestroyGLXPixmap( Display
*dpy
, GLXPixmap pixmap
)
1287 XMesaBuffer b
= XMesaFindBuffer(dpy
, pixmap
);
1289 XMesaDestroyBuffer(b
);
1291 else if (_mesa_getenv("MESA_DEBUG")) {
1292 _mesa_warning(NULL
, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1298 glXCopyContext( Display
*dpy
, GLXContext src
, GLXContext dst
,
1299 unsigned long mask
)
1301 XMesaContext xm_src
= src
->xmesaContext
;
1302 XMesaContext xm_dst
= dst
->xmesaContext
;
1304 if (MakeCurrent_PrevContext
== src
) {
1307 st_copy_context_state( xm_src
->st
, xm_dst
->st
, (GLuint
) mask
);
1312 glXQueryExtension( Display
*dpy
, int *errorBase
, int *eventBase
)
1315 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1316 if (!XQueryExtension(dpy
, GLX_EXTENSION_NAME
, &op
, &ev
, &err
))
1322 return True
; /* we're faking GLX so always return success */
1327 glXDestroyContext( Display
*dpy
, GLXContext ctx
)
1329 GLXContext glxCtx
= ctx
;
1331 MakeCurrent_PrevContext
= 0;
1332 MakeCurrent_PrevDrawable
= 0;
1333 MakeCurrent_PrevReadable
= 0;
1334 MakeCurrent_PrevDrawBuffer
= 0;
1335 MakeCurrent_PrevReadBuffer
= 0;
1336 XMesaDestroyContext( glxCtx
->xmesaContext
);
1337 XMesaGarbageCollect();
1343 glXIsDirect( Display
*dpy
, GLXContext ctx
)
1345 GLXContext glxCtx
= ctx
;
1347 return glxCtx
->isDirect
;
1353 glXSwapBuffers( Display
*dpy
, GLXDrawable drawable
)
1355 XMesaBuffer buffer
= XMesaFindBuffer( dpy
, drawable
);
1356 static boolean firsttime
= 1, no_rast
= 0;
1359 no_rast
= getenv("SP_NO_RAST") != NULL
;
1367 XMesaSwapBuffers(buffer
);
1369 else if (_mesa_getenv("MESA_DEBUG")) {
1370 _mesa_warning(NULL
, "glXSwapBuffers: invalid drawable 0x%x\n",
1377 /*** GLX_MESA_copy_sub_buffer ***/
1380 glXCopySubBufferMESA( Display
*dpy
, GLXDrawable drawable
,
1381 int x
, int y
, int width
, int height
)
1383 XMesaBuffer buffer
= XMesaFindBuffer( dpy
, drawable
);
1385 XMesaCopySubBuffer(buffer
, x
, y
, width
, height
);
1387 else if (_mesa_getenv("MESA_DEBUG")) {
1388 _mesa_warning(NULL
, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1394 glXQueryVersion( Display
*dpy
, int *maj
, int *min
)
1397 /* Return GLX version, not Mesa version */
1398 assert(CLIENT_MAJOR_VERSION
== SERVER_MAJOR_VERSION
);
1399 *maj
= CLIENT_MAJOR_VERSION
;
1400 *min
= MIN2( CLIENT_MINOR_VERSION
, SERVER_MINOR_VERSION
);
1406 * Query the GLX attributes of the given XVisualInfo.
1409 get_config( XMesaVisual xmvis
, int attrib
, int *value
, GLboolean fbconfig
)
1415 return GLX_BAD_ATTRIBUTE
;
1416 *value
= (int) True
;
1418 case GLX_BUFFER_SIZE
:
1419 *value
= xmvis
->visinfo
->depth
;
1422 *value
= xmvis
->mesa_visual
.level
;
1426 return GLX_BAD_ATTRIBUTE
;
1427 if (xmvis
->mesa_visual
.rgbMode
) {
1434 case GLX_DOUBLEBUFFER
:
1435 *value
= (int) xmvis
->mesa_visual
.doubleBufferMode
;
1438 *value
= (int) xmvis
->mesa_visual
.stereoMode
;
1440 case GLX_AUX_BUFFERS
:
1441 *value
= xmvis
->mesa_visual
.numAuxBuffers
;
1444 *value
= xmvis
->mesa_visual
.redBits
;
1446 case GLX_GREEN_SIZE
:
1447 *value
= xmvis
->mesa_visual
.greenBits
;
1450 *value
= xmvis
->mesa_visual
.blueBits
;
1452 case GLX_ALPHA_SIZE
:
1453 *value
= xmvis
->mesa_visual
.alphaBits
;
1455 case GLX_DEPTH_SIZE
:
1456 *value
= xmvis
->mesa_visual
.depthBits
;
1458 case GLX_STENCIL_SIZE
:
1459 *value
= xmvis
->mesa_visual
.stencilBits
;
1461 case GLX_ACCUM_RED_SIZE
:
1462 *value
= xmvis
->mesa_visual
.accumRedBits
;
1464 case GLX_ACCUM_GREEN_SIZE
:
1465 *value
= xmvis
->mesa_visual
.accumGreenBits
;
1467 case GLX_ACCUM_BLUE_SIZE
:
1468 *value
= xmvis
->mesa_visual
.accumBlueBits
;
1470 case GLX_ACCUM_ALPHA_SIZE
:
1471 *value
= xmvis
->mesa_visual
.accumAlphaBits
;
1475 * GLX_EXT_visual_info extension
1477 case GLX_X_VISUAL_TYPE_EXT
:
1478 switch (xmvis
->visinfo
->CLASS
) {
1479 case StaticGray
: *value
= GLX_STATIC_GRAY_EXT
; return 0;
1480 case GrayScale
: *value
= GLX_GRAY_SCALE_EXT
; return 0;
1481 case StaticColor
: *value
= GLX_STATIC_GRAY_EXT
; return 0;
1482 case PseudoColor
: *value
= GLX_PSEUDO_COLOR_EXT
; return 0;
1483 case TrueColor
: *value
= GLX_TRUE_COLOR_EXT
; return 0;
1484 case DirectColor
: *value
= GLX_DIRECT_COLOR_EXT
; return 0;
1487 case GLX_TRANSPARENT_TYPE_EXT
:
1489 *value
= GLX_NONE_EXT
;
1491 case GLX_TRANSPARENT_INDEX_VALUE_EXT
:
1494 case GLX_TRANSPARENT_RED_VALUE_EXT
:
1497 case GLX_TRANSPARENT_GREEN_VALUE_EXT
:
1500 case GLX_TRANSPARENT_BLUE_VALUE_EXT
:
1503 case GLX_TRANSPARENT_ALPHA_VALUE_EXT
:
1508 * GLX_EXT_visual_info extension
1510 case GLX_VISUAL_CAVEAT_EXT
:
1511 /* test for zero, just in case */
1512 if (xmvis
->mesa_visual
.visualRating
> 0)
1513 *value
= xmvis
->mesa_visual
.visualRating
;
1515 *value
= GLX_NONE_EXT
;
1519 * GLX_ARB_multisample
1521 case GLX_SAMPLE_BUFFERS_ARB
:
1524 case GLX_SAMPLES_ARB
:
1531 case GLX_SCREEN_EXT
:
1533 return GLX_BAD_ATTRIBUTE
;
1534 *value
= xmvis
->visinfo
->screen
;
1536 case GLX_DRAWABLE_TYPE
: /*SGIX too */
1538 return GLX_BAD_ATTRIBUTE
;
1539 *value
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
1541 case GLX_RENDER_TYPE_SGIX
:
1543 return GLX_BAD_ATTRIBUTE
;
1544 if (xmvis
->mesa_visual
.rgbMode
)
1545 *value
= GLX_RGBA_BIT
;
1547 *value
= GLX_COLOR_INDEX_BIT
;
1549 case GLX_X_RENDERABLE_SGIX
:
1551 return GLX_BAD_ATTRIBUTE
;
1552 *value
= True
; /* XXX really? */
1554 case GLX_FBCONFIG_ID_SGIX
:
1556 return GLX_BAD_ATTRIBUTE
;
1557 *value
= xmvis
->visinfo
->visualid
;
1559 case GLX_MAX_PBUFFER_WIDTH
:
1561 return GLX_BAD_ATTRIBUTE
;
1562 /* XXX or MAX_WIDTH? */
1563 *value
= DisplayWidth(xmvis
->display
, xmvis
->visinfo
->screen
);
1565 case GLX_MAX_PBUFFER_HEIGHT
:
1567 return GLX_BAD_ATTRIBUTE
;
1568 *value
= DisplayHeight(xmvis
->display
, xmvis
->visinfo
->screen
);
1570 case GLX_MAX_PBUFFER_PIXELS
:
1572 return GLX_BAD_ATTRIBUTE
;
1573 *value
= DisplayWidth(xmvis
->display
, xmvis
->visinfo
->screen
) *
1574 DisplayHeight(xmvis
->display
, xmvis
->visinfo
->screen
);
1578 return GLX_BAD_ATTRIBUTE
;
1579 *value
= xmvis
->visinfo
->visualid
;
1582 #ifdef GLX_EXT_texture_from_pixmap
1583 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
1584 *value
= True
; /*XXX*/
1586 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
1588 *value
= xmvis
->mesa_visual
.alphaBits
> 0 ? True
: False
;
1590 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
1591 *value
= True
; /*XXX*/
1593 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
1594 *value
= (GLX_TEXTURE_1D_BIT_EXT
|
1595 GLX_TEXTURE_2D_BIT_EXT
|
1596 GLX_TEXTURE_RECTANGLE_BIT_EXT
); /*XXX*/
1598 case GLX_Y_INVERTED_EXT
:
1599 *value
= True
; /*XXX*/
1604 return GLX_BAD_ATTRIBUTE
;
1611 glXGetConfig( Display
*dpy
, XVisualInfo
*visinfo
,
1612 int attrib
, int *value
)
1616 if (!dpy
|| !visinfo
)
1617 return GLX_BAD_ATTRIBUTE
;
1619 xmvis
= find_glx_visual( dpy
, visinfo
);
1621 /* this visual wasn't obtained with glXChooseVisual */
1622 xmvis
= create_glx_visual( dpy
, visinfo
);
1624 /* this visual can't be used for GL rendering */
1625 if (attrib
==GLX_USE_GL
) {
1626 *value
= (int) False
;
1630 return GLX_BAD_VISUAL
;
1635 k
= get_config(xmvis
, attrib
, value
, GL_FALSE
);
1643 XMesaContext xmesa
= XMesaGetCurrentContext();
1644 XMesaFlush( xmesa
);
1652 XMesaContext xmesa
= XMesaGetCurrentContext();
1653 XMesaFlush( xmesa
);
1658 get_extensions( void )
1665 /* GLX 1.1 and later */
1667 glXQueryExtensionsString( Display
*dpy
, int screen
)
1671 return get_extensions();
1676 /* GLX 1.1 and later */
1678 glXQueryServerString( Display
*dpy
, int screen
, int name
)
1680 static char version
[1000];
1681 sprintf(version
, "%d.%d %s",
1682 SERVER_MAJOR_VERSION
, SERVER_MINOR_VERSION
, MESA_GLX_VERSION
);
1688 case GLX_EXTENSIONS
:
1689 return get_extensions();
1701 /* GLX 1.1 and later */
1703 glXGetClientString( Display
*dpy
, int name
)
1705 static char version
[1000];
1706 sprintf(version
, "%d.%d %s", CLIENT_MAJOR_VERSION
,
1707 CLIENT_MINOR_VERSION
, MESA_GLX_VERSION
);
1712 case GLX_EXTENSIONS
:
1713 return get_extensions();
1731 glXGetFBConfigAttrib( Display
*dpy
, GLXFBConfig config
,
1732 int attribute
, int *value
)
1734 XMesaVisual v
= (XMesaVisual
) config
;
1738 if (!dpy
|| !config
|| !value
)
1741 return get_config(v
, attribute
, value
, GL_TRUE
);
1745 PUBLIC GLXFBConfig
*
1746 glXGetFBConfigs( Display
*dpy
, int screen
, int *nelements
)
1748 XVisualInfo
*visuals
, visTemplate
;
1749 const long visMask
= VisualScreenMask
;
1752 /* Get list of all X visuals */
1753 visTemplate
.screen
= screen
;
1754 visuals
= XGetVisualInfo(dpy
, visMask
, &visTemplate
, nelements
);
1755 if (*nelements
> 0) {
1756 XMesaVisual
*results
;
1757 results
= (XMesaVisual
*) malloc(*nelements
* sizeof(XMesaVisual
));
1762 for (i
= 0; i
< *nelements
; i
++) {
1763 results
[i
] = create_glx_visual(dpy
, visuals
+ i
);
1765 return (GLXFBConfig
*) results
;
1771 PUBLIC GLXFBConfig
*
1772 glXChooseFBConfig( Display
*dpy
, int screen
,
1773 const int *attribList
, int *nitems
)
1777 if (!attribList
|| !attribList
[0]) {
1778 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1779 return glXGetFBConfigs(dpy
, screen
, nitems
);
1782 xmvis
= choose_visual(dpy
, screen
, attribList
, GL_TRUE
);
1784 GLXFBConfig
*config
= (GLXFBConfig
*) malloc(sizeof(XMesaVisual
));
1790 config
[0] = (GLXFBConfig
) xmvis
;
1791 return (GLXFBConfig
*) config
;
1800 PUBLIC XVisualInfo
*
1801 glXGetVisualFromFBConfig( Display
*dpy
, GLXFBConfig config
)
1803 if (dpy
&& config
) {
1804 XMesaVisual xmvis
= (XMesaVisual
) config
;
1806 return xmvis
->vishandle
;
1808 /* create a new vishandle - the cached one may be stale */
1809 xmvis
->vishandle
= (XVisualInfo
*) malloc(sizeof(XVisualInfo
));
1810 if (xmvis
->vishandle
) {
1811 memcpy(xmvis
->vishandle
, xmvis
->visinfo
, sizeof(XVisualInfo
));
1813 return xmvis
->vishandle
;
1823 glXCreateWindow( Display
*dpy
, GLXFBConfig config
, Window win
,
1824 const int *attribList
)
1826 XMesaVisual xmvis
= (XMesaVisual
) config
;
1831 xmbuf
= XMesaCreateWindowBuffer(xmvis
, win
);
1836 (void) attribList
; /* Ignored in GLX 1.3 */
1838 return win
; /* A hack for now */
1843 glXDestroyWindow( Display
*dpy
, GLXWindow window
)
1845 XMesaBuffer b
= XMesaFindBuffer(dpy
, (Drawable
) window
);
1847 XMesaDestroyBuffer(b
);
1848 /* don't destroy X window */
1854 glXCreatePixmap( Display
*dpy
, GLXFBConfig config
, Pixmap pixmap
,
1855 const int *attribList
)
1857 XMesaVisual v
= (XMesaVisual
) config
;
1860 int target
= 0, format
= 0, mipmap
= 0;
1863 if (!dpy
|| !config
|| !pixmap
)
1866 for (attr
= attribList
; attr
&& *attr
; attr
++) {
1868 case GLX_TEXTURE_FORMAT_EXT
:
1871 case GLX_TEXTURE_FORMAT_NONE_EXT
:
1872 case GLX_TEXTURE_FORMAT_RGB_EXT
:
1873 case GLX_TEXTURE_FORMAT_RGBA_EXT
:
1881 case GLX_TEXTURE_TARGET_EXT
:
1884 case GLX_TEXTURE_1D_EXT
:
1885 case GLX_TEXTURE_2D_EXT
:
1886 case GLX_TEXTURE_RECTANGLE_EXT
:
1894 case GLX_MIPMAP_TEXTURE_EXT
:
1905 if (format
== GLX_TEXTURE_FORMAT_RGB_EXT
) {
1906 if (get_config(v
, GLX_BIND_TO_TEXTURE_RGB_EXT
,
1907 &value
, GL_TRUE
) != Success
1909 return 0; /* error! */
1912 else if (format
== GLX_TEXTURE_FORMAT_RGBA_EXT
) {
1913 if (get_config(v
, GLX_BIND_TO_TEXTURE_RGBA_EXT
,
1914 &value
, GL_TRUE
) != Success
1916 return 0; /* error! */
1920 if (get_config(v
, GLX_BIND_TO_MIPMAP_TEXTURE_EXT
,
1921 &value
, GL_TRUE
) != Success
1923 return 0; /* error! */
1926 if (target
== GLX_TEXTURE_1D_EXT
) {
1927 if (get_config(v
, GLX_BIND_TO_TEXTURE_TARGETS_EXT
,
1928 &value
, GL_TRUE
) != Success
1929 || (value
& GLX_TEXTURE_1D_BIT_EXT
) == 0) {
1930 return 0; /* error! */
1933 else if (target
== GLX_TEXTURE_2D_EXT
) {
1934 if (get_config(v
, GLX_BIND_TO_TEXTURE_TARGETS_EXT
,
1935 &value
, GL_TRUE
) != Success
1936 || (value
& GLX_TEXTURE_2D_BIT_EXT
) == 0) {
1937 return 0; /* error! */
1940 if (target
== GLX_TEXTURE_RECTANGLE_EXT
) {
1941 if (get_config(v
, GLX_BIND_TO_TEXTURE_TARGETS_EXT
,
1942 &value
, GL_TRUE
) != Success
1943 || (value
& GLX_TEXTURE_RECTANGLE_BIT_EXT
) == 0) {
1944 return 0; /* error! */
1948 if (format
|| target
|| mipmap
) {
1949 /* texture from pixmap */
1950 b
= XMesaCreatePixmapTextureBuffer(v
, pixmap
, 0, format
, target
, mipmap
);
1953 b
= XMesaCreatePixmapBuffer( v
, pixmap
, 0 );
1964 glXDestroyPixmap( Display
*dpy
, GLXPixmap pixmap
)
1966 XMesaBuffer b
= XMesaFindBuffer(dpy
, (Drawable
)pixmap
);
1968 XMesaDestroyBuffer(b
);
1969 /* don't destroy X pixmap */
1974 glXCreatePbuffer( Display
*dpy
, GLXFBConfig config
,
1975 const int *attribList
)
1977 XMesaVisual xmvis
= (XMesaVisual
) config
;
1980 int width
= 0, height
= 0;
1981 GLboolean useLargest
= GL_FALSE
, preserveContents
= GL_FALSE
;
1985 for (attrib
= attribList
; *attrib
; attrib
++) {
1987 case GLX_PBUFFER_WIDTH
:
1991 case GLX_PBUFFER_HEIGHT
:
1995 case GLX_PRESERVED_CONTENTS
:
1997 preserveContents
= *attrib
;
1999 case GLX_LARGEST_PBUFFER
:
2001 useLargest
= *attrib
;
2008 if (width
== 0 || height
== 0)
2011 if (width
> MAX_WIDTH
|| height
> MAX_HEIGHT
) {
2012 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2013 * allocate the largest possible buffer.
2017 height
= MAX_HEIGHT
;
2021 xmbuf
= XMesaCreatePBuffer( xmvis
, 0, width
, height
);
2022 /* A GLXPbuffer handle must be an X Drawable because that's what
2023 * glXMakeCurrent takes.
2026 xmbuf
->largestPbuffer
= useLargest
;
2027 xmbuf
->preservedContents
= preserveContents
;
2028 return (GLXPbuffer
) xmbuf
->drawable
;
2037 glXDestroyPbuffer( Display
*dpy
, GLXPbuffer pbuf
)
2039 XMesaBuffer b
= XMesaFindBuffer(dpy
, pbuf
);
2041 XMesaDestroyBuffer(b
);
2047 glXQueryDrawable( Display
*dpy
, GLXDrawable draw
, int attribute
,
2048 unsigned int *value
)
2050 GLuint width
, height
;
2051 XMesaBuffer xmbuf
= XMesaFindBuffer(dpy
, draw
);
2055 /* make sure buffer's dimensions are up to date */
2056 xmesa_get_window_size(dpy
, xmbuf
, &width
, &height
);
2058 switch (attribute
) {
2065 case GLX_PRESERVED_CONTENTS
:
2066 *value
= xmbuf
->preservedContents
;
2068 case GLX_LARGEST_PBUFFER
:
2069 *value
= xmbuf
->largestPbuffer
;
2071 case GLX_FBCONFIG_ID
:
2072 *value
= xmbuf
->xm_visual
->visinfo
->visualid
;
2074 #ifdef GLX_EXT_texture_from_pixmap
2075 case GLX_TEXTURE_FORMAT_EXT
:
2076 *value
= xmbuf
->TextureFormat
;
2078 case GLX_TEXTURE_TARGET_EXT
:
2079 *value
= xmbuf
->TextureTarget
;
2081 case GLX_MIPMAP_TEXTURE_EXT
:
2082 *value
= xmbuf
->TextureMipmap
;
2087 return; /* raise BadValue error */
2093 glXCreateNewContext( Display
*dpy
, GLXFBConfig config
,
2094 int renderType
, GLXContext shareList
, Bool direct
)
2097 GLXContext shareCtx
= shareList
;
2098 XMesaVisual xmvis
= (XMesaVisual
) config
;
2100 if (!dpy
|| !config
||
2101 (renderType
!= GLX_RGBA_TYPE
&& renderType
!= GLX_COLOR_INDEX_TYPE
))
2104 glxCtx
= CALLOC_STRUCT(__GLXcontextRec
);
2108 /* deallocate unused windows/buffers */
2109 XMesaGarbageCollect();
2111 glxCtx
->xmesaContext
= XMesaCreateContext(xmvis
,
2112 shareCtx
? shareCtx
->xmesaContext
: NULL
);
2113 if (!glxCtx
->xmesaContext
) {
2118 glxCtx
->isDirect
= DEFAULT_DIRECT
;
2119 glxCtx
->currentDpy
= dpy
;
2120 glxCtx
->xid
= (XID
) glxCtx
; /* self pointer */
2127 glXQueryContext( Display
*dpy
, GLXContext ctx
, int attribute
, int *value
)
2129 GLXContext glxCtx
= ctx
;
2130 XMesaContext xmctx
= glxCtx
->xmesaContext
;
2135 switch (attribute
) {
2136 case GLX_FBCONFIG_ID
:
2137 *value
= xmctx
->xm_visual
->visinfo
->visualid
;
2139 case GLX_RENDER_TYPE
:
2140 if (xmctx
->xm_visual
->mesa_visual
.rgbMode
)
2141 *value
= GLX_RGBA_TYPE
;
2143 *value
= GLX_COLOR_INDEX_TYPE
;
2149 return GLX_BAD_ATTRIBUTE
;
2156 glXSelectEvent( Display
*dpy
, GLXDrawable drawable
, unsigned long mask
)
2158 XMesaBuffer xmbuf
= XMesaFindBuffer(dpy
, drawable
);
2160 xmbuf
->selectedEvents
= mask
;
2165 glXGetSelectedEvent( Display
*dpy
, GLXDrawable drawable
,
2166 unsigned long *mask
)
2168 XMesaBuffer xmbuf
= XMesaFindBuffer(dpy
, drawable
);
2170 *mask
= xmbuf
->selectedEvents
;
2177 /*** GLX_SGI_swap_control ***/
2180 glXSwapIntervalSGI(int interval
)
2188 /*** GLX_SGI_video_sync ***/
2190 static unsigned int FrameCounter
= 0;
2193 glXGetVideoSyncSGI(unsigned int *count
)
2195 /* this is a bogus implementation */
2196 *count
= FrameCounter
++;
2201 glXWaitVideoSyncSGI(int divisor
, int remainder
, unsigned int *count
)
2203 if (divisor
<= 0 || remainder
< 0)
2204 return GLX_BAD_VALUE
;
2205 /* this is a bogus implementation */
2207 while (FrameCounter
% divisor
!= remainder
)
2209 *count
= FrameCounter
;
2215 /*** GLX_SGI_make_current_read ***/
2218 glXMakeCurrentReadSGI(Display
*dpy
, GLXDrawable draw
, GLXDrawable read
, GLXContext ctx
)
2220 return glXMakeContextCurrent( dpy
, draw
, read
, ctx
);
2225 glXGetCurrentReadDrawableSGI(void)
2232 /*** GLX_SGIX_video_source ***/
2235 PUBLIC GLXVideoSourceSGIX
2236 glXCreateGLXVideoSourceSGIX(Display
*dpy
, int screen
, VLServer server
, VLPath path
, int nodeClass
, VLNode drainNode
)
2248 glXDestroyGLXVideoSourceSGIX(Display
*dpy
, GLXVideoSourceSGIX src
)
2257 /*** GLX_EXT_import_context ***/
2260 glXFreeContextEXT(Display
*dpy
, GLXContext context
)
2267 glXGetContextIDEXT(const GLXContext context
)
2274 glXImportContextEXT(Display
*dpy
, GLXContextID contextID
)
2282 glXQueryContextInfoEXT(Display
*dpy
, GLXContext context
, int attribute
, int *value
)
2293 /*** GLX_SGIX_fbconfig ***/
2296 glXGetFBConfigAttribSGIX(Display
*dpy
, GLXFBConfigSGIX config
, int attribute
, int *value
)
2298 return glXGetFBConfigAttrib(dpy
, config
, attribute
, value
);
2301 PUBLIC GLXFBConfigSGIX
*
2302 glXChooseFBConfigSGIX(Display
*dpy
, int screen
, int *attrib_list
, int *nelements
)
2304 return (GLXFBConfig
*) glXChooseFBConfig(dpy
, screen
, attrib_list
, nelements
);
2309 glXCreateGLXPixmapWithConfigSGIX(Display
*dpy
, GLXFBConfigSGIX config
, Pixmap pixmap
)
2311 XMesaVisual xmvis
= (XMesaVisual
) config
;
2312 XMesaBuffer xmbuf
= XMesaCreatePixmapBuffer(xmvis
, pixmap
, 0);
2313 return xmbuf
->drawable
; /* need to return an X ID */
2318 glXCreateContextWithConfigSGIX(Display
*dpy
, GLXFBConfigSGIX config
, int render_type
, GLXContext share_list
, Bool direct
)
2320 XMesaVisual xmvis
= (XMesaVisual
) config
;
2322 GLXContext shareCtx
= share_list
;
2324 glxCtx
= CALLOC_STRUCT(__GLXcontextRec
);
2328 /* deallocate unused windows/buffers */
2329 XMesaGarbageCollect();
2331 glxCtx
->xmesaContext
= XMesaCreateContext(xmvis
,
2332 shareCtx
? shareCtx
->xmesaContext
: NULL
);
2333 if (!glxCtx
->xmesaContext
) {
2338 glxCtx
->isDirect
= DEFAULT_DIRECT
;
2339 glxCtx
->currentDpy
= dpy
;
2340 glxCtx
->xid
= (XID
) glxCtx
; /* self pointer */
2346 PUBLIC XVisualInfo
*
2347 glXGetVisualFromFBConfigSGIX(Display
*dpy
, GLXFBConfigSGIX config
)
2349 return glXGetVisualFromFBConfig(dpy
, config
);
2353 PUBLIC GLXFBConfigSGIX
2354 glXGetFBConfigFromVisualSGIX(Display
*dpy
, XVisualInfo
*vis
)
2356 XMesaVisual xmvis
= find_glx_visual(dpy
, vis
);
2358 /* This visual wasn't found with glXChooseVisual() */
2359 xmvis
= create_glx_visual(dpy
, vis
);
2362 return (GLXFBConfigSGIX
) xmvis
;
2367 /*** GLX_SGIX_pbuffer ***/
2369 PUBLIC GLXPbufferSGIX
2370 glXCreateGLXPbufferSGIX(Display
*dpy
, GLXFBConfigSGIX config
,
2371 unsigned int width
, unsigned int height
,
2374 XMesaVisual xmvis
= (XMesaVisual
) config
;
2377 GLboolean useLargest
= GL_FALSE
, preserveContents
= GL_FALSE
;
2381 for (attrib
= attribList
; attrib
&& *attrib
; attrib
++) {
2383 case GLX_PRESERVED_CONTENTS_SGIX
:
2385 preserveContents
= *attrib
; /* ignored */
2387 case GLX_LARGEST_PBUFFER_SGIX
:
2389 useLargest
= *attrib
; /* ignored */
2396 /* not used at this time */
2398 (void) preserveContents
;
2400 xmbuf
= XMesaCreatePBuffer( xmvis
, 0, width
, height
);
2401 /* A GLXPbuffer handle must be an X Drawable because that's what
2402 * glXMakeCurrent takes.
2404 return (GLXPbuffer
) xmbuf
->drawable
;
2409 glXDestroyGLXPbufferSGIX(Display
*dpy
, GLXPbufferSGIX pbuf
)
2411 XMesaBuffer xmbuf
= XMesaFindBuffer(dpy
, pbuf
);
2413 XMesaDestroyBuffer(xmbuf
);
2419 glXQueryGLXPbufferSGIX(Display
*dpy
, GLXPbufferSGIX pbuf
, int attribute
, unsigned int *value
)
2421 const XMesaBuffer xmbuf
= XMesaFindBuffer(dpy
, pbuf
);
2424 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2428 switch (attribute
) {
2429 case GLX_PRESERVED_CONTENTS_SGIX
:
2432 case GLX_LARGEST_PBUFFER_SGIX
:
2433 *value
= xmesa_buffer_width(xmbuf
) * xmesa_buffer_height(xmbuf
);
2435 case GLX_WIDTH_SGIX
:
2436 *value
= xmesa_buffer_width(xmbuf
);
2438 case GLX_HEIGHT_SGIX
:
2439 *value
= xmesa_buffer_height(xmbuf
);
2441 case GLX_EVENT_MASK_SGIX
:
2442 *value
= 0; /* XXX might be wrong */
2452 glXSelectEventSGIX(Display
*dpy
, GLXDrawable drawable
, unsigned long mask
)
2454 XMesaBuffer xmbuf
= XMesaFindBuffer(dpy
, drawable
);
2456 /* Note: we'll never generate clobber events */
2457 xmbuf
->selectedEvents
= mask
;
2463 glXGetSelectedEventSGIX(Display
*dpy
, GLXDrawable drawable
, unsigned long *mask
)
2465 XMesaBuffer xmbuf
= XMesaFindBuffer(dpy
, drawable
);
2467 *mask
= xmbuf
->selectedEvents
;
2476 /*** GLX_SGI_cushion ***/
2479 glXCushionSGI(Display
*dpy
, Window win
, float cushion
)
2488 /*** GLX_SGIX_video_resize ***/
2491 glXBindChannelToWindowSGIX(Display
*dpy
, int screen
, int channel
, Window window
)
2501 glXChannelRectSGIX(Display
*dpy
, int screen
, int channel
, int x
, int y
, int w
, int h
)
2514 glXQueryChannelRectSGIX(Display
*dpy
, int screen
, int channel
, int *x
, int *y
, int *w
, int *h
)
2527 glXQueryChannelDeltasSGIX(Display
*dpy
, int screen
, int channel
, int *dx
, int *dy
, int *dw
, int *dh
)
2540 glXChannelRectSyncSGIX(Display
*dpy
, int screen
, int channel
, GLenum synctype
)
2551 /*** GLX_SGIX_dmbuffer **/
2553 #if defined(_DM_BUFFER_H_)
2555 glXAssociateDMPbufferSGIX(Display
*dpy
, GLXPbufferSGIX pbuffer
, DMparams
*params
, DMbuffer dmbuffer
)
2566 /*** GLX_SGIX_swap_group ***/
2569 glXJoinSwapGroupSGIX(Display
*dpy
, GLXDrawable drawable
, GLXDrawable member
)
2578 /*** GLX_SGIX_swap_barrier ***/
2581 glXBindSwapBarrierSGIX(Display
*dpy
, GLXDrawable drawable
, int barrier
)
2589 glXQueryMaxSwapBarriersSGIX(Display
*dpy
, int screen
, int *max
)
2599 /*** GLX_SUN_get_transparent_index ***/
2602 glXGetTransparentIndexSUN(Display
*dpy
, Window overlay
, Window underlay
, long *pTransparent
)
2607 (void) pTransparent
;
2613 /*** GLX_MESA_release_buffers ***/
2616 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2617 * (a window or pixmap) prior to destroying the GLXDrawable.
2620 glXReleaseBuffersMESA( Display
*dpy
, GLXDrawable d
)
2622 XMesaBuffer b
= XMesaFindBuffer(dpy
, d
);
2624 XMesaDestroyBuffer(b
);
2630 /*** GLX_EXT_texture_from_pixmap ***/
2633 glXBindTexImageEXT(Display
*dpy
, GLXDrawable drawable
, int buffer
,
2634 const int *attrib_list
)
2636 XMesaBuffer b
= XMesaFindBuffer(dpy
, drawable
);
2638 XMesaBindTexImage(dpy
, b
, buffer
, attrib_list
);
2642 glXReleaseTexImageEXT(Display
*dpy
, GLXDrawable drawable
, int buffer
)
2644 XMesaBuffer b
= XMesaFindBuffer(dpy
, drawable
);
2646 XMesaReleaseTexImage(dpy
, b
, buffer
);