3 * Mesa context/visual/framebuffer management functions.
8 * Mesa 3-D graphics library
11 * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
13 * Permission is hereby granted, free of charge, to any person obtaining a
14 * copy of this software and associated documentation files (the "Software"),
15 * to deal in the Software without restriction, including without limitation
16 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
17 * and/or sell copies of the Software, and to permit persons to whom the
18 * Software is furnished to do so, subject to the following conditions:
20 * The above copyright notice and this permission notice shall be included
21 * in all copies or substantial portions of the Software.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
24 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
27 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
28 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 * \mainpage Mesa Core Module
35 * \section CoreIntroduction Introduction
37 * The Mesa core module consists of all the top-level files in the src
38 * directory. The core module basically takes care of API dispatch,
39 * and OpenGL state management.
41 * For example, calls to glPolygonMode() are routed to _mesa_PolygonMode()
42 * which updates the state related to polygonmode. Furthermore, dirty
43 * state flags related to polygon mode are set and if the device driver
44 * implements a special routine for PolygonMode, it will be called.
47 * \section AboutDoxygen About Doxygen
49 * If you're viewing this information as Doxygen-generated HTML you'll
50 * see the documentation index at the top of this page.
52 * The first line lists the Mesa source code modules.
53 * The second line lists the indexes available for viewing the documentation
56 * Selecting the <b>Main page</b> link will display a summary of the module
59 * Selecting <b>Data Structures</b> will list all C structures.
61 * Selecting the <b>File List</b> link will list all the source files in
63 * Selecting a filename will show a list of all functions defined in that file.
65 * Selecting the <b>Data Fields</b> link will display a list of all
66 * documented structure members.
68 * Selecting the <b>Globals</b> link will display a list
69 * of all functions, structures, global variables and macros in the module.
80 #include "bufferobj.h"
88 #include "extensions.h"
93 #include "glapioffsets.h"
94 #include "histogram.h"
105 #if FEATURE_NV_vertex_program || FEATURE_NV_fragment_program
109 #include "simple_list.h"
112 #include "teximage.h"
114 #include "texstate.h"
119 #include "math/m_translate.h"
120 #include "math/m_matrix.h"
121 #include "math/m_xform.h"
122 #include "math/mathmod.h"
126 #include "SPARC/sparc.h"
130 int MESA_VERBOSE
= 0;
133 #ifndef MESA_DEBUG_FLAGS
134 int MESA_DEBUG_FLAGS
= 0;
138 /* ubyte -> float conversion */
139 GLfloat _mesa_ubyte_to_float_color_tab
[256];
142 free_shared_state( GLcontext
*ctx
, struct gl_shared_state
*ss
);
145 /**********************************************************************/
146 /** \name OpenGL SI-style interface (new in Mesa 3.5)
149 * \note Most of these functions are never called in the Mesa subset.
155 * Destroy context callback.
158 * \return GL_TRUE on success, or GL_FALSE on failure.
161 * Called by window system/device driver (via __GLexports::destroyCurrent) when
162 * the rendering context is to be destroyed.
165 * Frees the context data and the context structure.
168 _mesa_destroyContext(__GLcontext
*gc
)
171 _mesa_free_context_data(gc
);
178 * Unbind context callback.
181 * \return GL_TRUE on success, or GL_FALSE on failure.
184 * Called by window system/device driver (via __GLexports::loseCurrent)
185 * when the rendering context is made non-current.
191 _mesa_loseCurrent(__GLcontext
*gc
)
193 /* XXX unbind context from thread */
198 * Bind context callback.
201 * \return GL_TRUE on success, or GL_FALSE on failure.
204 * Called by window system/device driver (via __GLexports::makeCurrent)
205 * when the rendering context is made current.
211 _mesa_makeCurrent(__GLcontext
*gc
)
213 /* XXX bind context to thread */
218 * Share context callback.
221 * \param gcShare shared context.
222 * \return GL_TRUE on success, or GL_FALSE on failure.
225 * Called by window system/device driver (via __GLexports::shareContext)
228 * Update the shared context reference count, gl_shared_state::RefCount.
231 _mesa_shareContext(__GLcontext
*gc
, __GLcontext
*gcShare
)
233 if (gc
&& gcShare
&& gc
->Shared
&& gcShare
->Shared
) {
234 gc
->Shared
->RefCount
--;
235 if (gc
->Shared
->RefCount
== 0) {
236 free_shared_state(gc
, gc
->Shared
);
238 gc
->Shared
= gcShare
->Shared
;
239 gc
->Shared
->RefCount
++;
250 * Copy context callback.
253 _mesa_copyContext(__GLcontext
*dst
, const __GLcontext
*src
, GLuint mask
)
256 _mesa_copy_context( src
, dst
, mask
);
267 _mesa_forceCurrent(__GLcontext
*gc
)
273 * Windows/buffer resizing notification callback.
275 * \param gc GL context.
276 * \return GL_TRUE on success, or GL_FALSE on failure.
279 _mesa_notifyResize(__GLcontext
*gc
)
282 GLuint width
, height
;
283 __GLdrawablePrivate
*d
= gc
->imports
.getDrawablePrivate(gc
);
284 if (!d
|| !d
->getDrawableSize
)
286 d
->getDrawableSize( d
, &x
, &y
, &width
, &height
);
287 /* update viewport, resize software buffers, etc. */
292 * Window/buffer destruction notification callback.
294 * \param gc GL context.
296 * Called when the context's window/buffer is going to be destroyed.
301 _mesa_notifyDestroy(__GLcontext
*gc
)
303 /* Unbind from it. */
307 * Swap buffers notification callback.
309 * \param gc GL context.
311 * Called by window system just before swapping buffers.
312 * We have to finish any pending rendering.
315 _mesa_notifySwapBuffers(__GLcontext
*gc
)
317 FLUSH_VERTICES( gc
, 0 );
321 struct __GLdispatchStateRec
*
322 _mesa_dispatchExec(__GLcontext
*gc
)
329 _mesa_beginDispatchOverride(__GLcontext
*gc
)
335 _mesa_endDispatchOverride(__GLcontext
*gc
)
343 * The window system will call these functions when it needs Mesa to do
346 * \note Device drivers should override these functions! For example,
347 * the Xlib driver should plug in the XMesa*-style functions into this
348 * structure. The XMesa-style functions should then call the _mesa_*
349 * version of these functions. This is an approximation to OO design
350 * (inheritance and virtual functions).
359 _mesa_init_default_exports(__GLexports
*exports
)
362 exports
->destroyContext
= _mesa_destroyContext
;
363 exports
->loseCurrent
= _mesa_loseCurrent
;
364 exports
->makeCurrent
= _mesa_makeCurrent
;
365 exports
->shareContext
= _mesa_shareContext
;
366 exports
->copyContext
= _mesa_copyContext
;
367 exports
->forceCurrent
= _mesa_forceCurrent
;
368 exports
->notifyResize
= _mesa_notifyResize
;
369 exports
->notifyDestroy
= _mesa_notifyDestroy
;
370 exports
->notifySwapBuffers
= _mesa_notifySwapBuffers
;
371 exports
->dispatchExec
= _mesa_dispatchExec
;
372 exports
->beginDispatchOverride
= _mesa_beginDispatchOverride
;
373 exports
->endDispatchOverride
= _mesa_endDispatchOverride
;
378 * Exported OpenGL SI interface.
381 __glCoreCreateContext(__GLimports
*imports
, __GLcontextModes
*modes
)
385 ctx
= (GLcontext
*) (*imports
->calloc
)(NULL
, 1, sizeof(GLcontext
));
390 _mesa_initialize_context(ctx
, modes
, NULL
, imports
, GL_FALSE
);
391 ctx
->imports
= *imports
;
397 * Exported OpenGL SI interface.
400 __glCoreNopDispatch(void)
404 __gl_dispatch
= __glNopDispatchState
;
407 _glapi_set_dispatch(NULL
);
414 /**********************************************************************/
415 /** \name GL Visual allocation/destruction */
416 /**********************************************************************/
420 * Allocate a new GLvisual object.
422 * \param rgbFlag GL_TRUE for RGB(A) mode, GL_FALSE for Color Index mode.
423 * \param dbFlag double buffering
424 * \param stereoFlag stereo buffer
425 * \param depthBits requested bits per depth buffer value. Any value in [0, 32]
426 * is acceptable but the actual depth type will be GLushort or GLuint as
428 * \param stencilBits requested minimum bits per stencil buffer value
429 * \param accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits number of bits per color component in accum buffer.
430 * \param indexBits number of bits per pixel if \p rgbFlag is GL_FALSE
431 * \param redBits number of bits per color component in frame buffer for RGB(A)
432 * mode. We always use 8 in core Mesa though.
433 * \param greenBits same as above.
434 * \param blueBits same as above.
435 * \param alphaBits same as above.
436 * \param numSamples not really used.
438 * \return pointer to new GLvisual or NULL if requested parameters can't be
441 * Allocates a GLvisual structure and initializes it via
442 * _mesa_initialize_visual().
445 _mesa_create_visual( GLboolean rgbFlag
,
447 GLboolean stereoFlag
,
456 GLint accumGreenBits
,
458 GLint accumAlphaBits
,
461 GLvisual
*vis
= (GLvisual
*) CALLOC( sizeof(GLvisual
) );
463 if (!_mesa_initialize_visual(vis
, rgbFlag
, dbFlag
, stereoFlag
,
464 redBits
, greenBits
, blueBits
, alphaBits
,
465 indexBits
, depthBits
, stencilBits
,
466 accumRedBits
, accumGreenBits
,
467 accumBlueBits
, accumAlphaBits
,
477 * Initialize the fields of the given GLvisual.
479 * \return GL_TRUE on success, or GL_FALSE on failure.
481 * \sa _mesa_create_visual() above for the parameter description.
483 * Makes some sanity checks and fills in the fields of the
484 * GLvisual structure with the given parameters.
487 _mesa_initialize_visual( GLvisual
*vis
,
490 GLboolean stereoFlag
,
499 GLint accumGreenBits
,
501 GLint accumAlphaBits
,
508 /* This is to catch bad values from device drivers not updated for
509 * Mesa 3.3. Some device drivers just passed 1. That's a REALLY
510 * bad value now (a 1-bit depth buffer!?!).
512 assert(depthBits
== 0 || depthBits
> 1);
514 if (depthBits
< 0 || depthBits
> 32) {
517 if (stencilBits
< 0 || stencilBits
> (GLint
) (8 * sizeof(GLstencil
))) {
520 if (accumRedBits
< 0 || accumRedBits
> (GLint
) (8 * sizeof(GLaccum
))) {
523 if (accumGreenBits
< 0 || accumGreenBits
> (GLint
) (8 * sizeof(GLaccum
))) {
526 if (accumBlueBits
< 0 || accumBlueBits
> (GLint
) (8 * sizeof(GLaccum
))) {
529 if (accumAlphaBits
< 0 || accumAlphaBits
> (GLint
) (8 * sizeof(GLaccum
))) {
533 vis
->rgbMode
= rgbFlag
;
534 vis
->doubleBufferMode
= dbFlag
;
535 vis
->stereoMode
= stereoFlag
;
537 vis
->redBits
= redBits
;
538 vis
->greenBits
= greenBits
;
539 vis
->blueBits
= blueBits
;
540 vis
->alphaBits
= alphaBits
;
542 vis
->indexBits
= indexBits
;
543 vis
->depthBits
= depthBits
;
544 vis
->accumRedBits
= (accumRedBits
> 0) ? (8 * sizeof(GLaccum
)) : 0;
545 vis
->accumGreenBits
= (accumGreenBits
> 0) ? (8 * sizeof(GLaccum
)) : 0;
546 vis
->accumBlueBits
= (accumBlueBits
> 0) ? (8 * sizeof(GLaccum
)) : 0;
547 vis
->accumAlphaBits
= (accumAlphaBits
> 0) ? (8 * sizeof(GLaccum
)) : 0;
548 vis
->stencilBits
= (stencilBits
> 0) ? (8 * sizeof(GLstencil
)) : 0;
550 vis
->haveAccumBuffer
= accumRedBits
> 0;
551 vis
->haveDepthBuffer
= depthBits
> 0;
552 vis
->haveStencilBuffer
= stencilBits
> 0;
554 vis
->numAuxBuffers
= 0;
566 * Frees the visual structure.
569 _mesa_destroy_visual( GLvisual
*vis
)
577 /**********************************************************************/
578 /** \name GL Framebuffer allocation/destruction */
579 /**********************************************************************/
583 * Create a new framebuffer.
585 * A GLframebuffer is a structure which encapsulates the depth, stencil and
586 * accum buffers and related parameters.
588 * \param visual a GLvisual pointer (we copy the struct contents)
589 * \param softwareDepth create/use a software depth buffer?
590 * \param softwareStencil create/use a software stencil buffer?
591 * \param softwareAccum create/use a software accum buffer?
592 * \param softwareAlpha create/use a software alpha buffer?
594 * \return pointer to new GLframebuffer struct or NULL if error.
596 * Allocate a GLframebuffer structure and initializes it via
597 * _mesa_initialize_framebuffer().
600 _mesa_create_framebuffer( const GLvisual
*visual
,
601 GLboolean softwareDepth
,
602 GLboolean softwareStencil
,
603 GLboolean softwareAccum
,
604 GLboolean softwareAlpha
)
606 GLframebuffer
*buffer
= CALLOC_STRUCT(gl_frame_buffer
);
609 _mesa_initialize_framebuffer(buffer
, visual
,
610 softwareDepth
, softwareStencil
,
611 softwareAccum
, softwareAlpha
);
617 * Initialize a GLframebuffer object.
619 * \sa _mesa_create_framebuffer() above for the parameter description.
621 * Makes some sanity checks and fills in the fields of the
622 * GLframebuffer structure with the given parameters.
625 _mesa_initialize_framebuffer( GLframebuffer
*buffer
,
626 const GLvisual
*visual
,
627 GLboolean softwareDepth
,
628 GLboolean softwareStencil
,
629 GLboolean softwareAccum
,
630 GLboolean softwareAlpha
)
635 _mesa_bzero(buffer
, sizeof(GLframebuffer
));
638 if (softwareDepth
) {
639 assert(visual
->depthBits
> 0);
641 if (softwareStencil
) {
642 assert(visual
->stencilBits
> 0);
645 assert(visual
->rgbMode
);
646 assert(visual
->accumRedBits
> 0);
647 assert(visual
->accumGreenBits
> 0);
648 assert(visual
->accumBlueBits
> 0);
651 assert(visual
->rgbMode
);
652 assert(visual
->alphaBits
> 0);
655 buffer
->Visual
= *visual
;
656 buffer
->UseSoftwareDepthBuffer
= softwareDepth
;
657 buffer
->UseSoftwareStencilBuffer
= softwareStencil
;
658 buffer
->UseSoftwareAccumBuffer
= softwareAccum
;
659 buffer
->UseSoftwareAlphaBuffers
= softwareAlpha
;
663 * Free a framebuffer struct and its buffers.
665 * Calls _mesa_free_framebuffer_data() and frees the structure.
668 _mesa_destroy_framebuffer( GLframebuffer
*buffer
)
671 _mesa_free_framebuffer_data(buffer
);
677 * Free the data hanging off of \p buffer, but not \p buffer itself.
679 * \param buffer framebuffer.
681 * Frees all the buffers associated with the structure.
684 _mesa_free_framebuffer_data( GLframebuffer
*buffer
)
689 if (buffer
->UseSoftwareDepthBuffer
&& buffer
->DepthBuffer
) {
690 MESA_PBUFFER_FREE( buffer
->DepthBuffer
);
691 buffer
->DepthBuffer
= NULL
;
693 if (buffer
->UseSoftwareAccumBuffer
&& buffer
->Accum
) {
694 MESA_PBUFFER_FREE( buffer
->Accum
);
695 buffer
->Accum
= NULL
;
697 if (buffer
->UseSoftwareStencilBuffer
&& buffer
->Stencil
) {
698 MESA_PBUFFER_FREE( buffer
->Stencil
);
699 buffer
->Stencil
= NULL
;
701 if (buffer
->UseSoftwareAlphaBuffers
){
702 if (buffer
->FrontLeftAlpha
) {
703 MESA_PBUFFER_FREE( buffer
->FrontLeftAlpha
);
704 buffer
->FrontLeftAlpha
= NULL
;
706 if (buffer
->BackLeftAlpha
) {
707 MESA_PBUFFER_FREE( buffer
->BackLeftAlpha
);
708 buffer
->BackLeftAlpha
= NULL
;
710 if (buffer
->FrontRightAlpha
) {
711 MESA_PBUFFER_FREE( buffer
->FrontRightAlpha
);
712 buffer
->FrontRightAlpha
= NULL
;
714 if (buffer
->BackRightAlpha
) {
715 MESA_PBUFFER_FREE( buffer
->BackRightAlpha
);
716 buffer
->BackRightAlpha
= NULL
;
724 /**********************************************************************/
725 /** \name Context allocation, initialization, destroying
727 * The purpose of the most initialization functions here is to provide the
728 * default state values according to the OpenGL specification.
730 /**********************************************************************/
734 * One-time initialization mutex lock.
736 * \sa Used by one_time_init().
738 _glthread_DECLARE_STATIC_MUTEX(OneTimeLock
);
741 * Calls all the various one-time-init functions in Mesa.
743 * While holding a global mutex lock, calls several initialization functions,
744 * and sets the glapi callbacks if the \c MESA_DEBUG environment variable is
747 * \sa _mesa_init_lists(), _math_init().
750 one_time_init( GLcontext
*ctx
)
752 static GLboolean alreadyCalled
= GL_FALSE
;
753 _glthread_LOCK_MUTEX(OneTimeLock
);
754 if (!alreadyCalled
) {
757 /* do some implementation tests */
758 assert( sizeof(GLbyte
) == 1 );
759 assert( sizeof(GLshort
) >= 2 );
760 assert( sizeof(GLint
) >= 4 );
761 assert( sizeof(GLubyte
) == 1 );
762 assert( sizeof(GLushort
) >= 2 );
763 assert( sizeof(GLuint
) >= 4 );
770 for (i
= 0; i
< 256; i
++) {
771 _mesa_ubyte_to_float_color_tab
[i
] = (float) i
/ 255.0F
;
776 _mesa_init_sparc_glapi_relocs();
778 if (_mesa_getenv("MESA_DEBUG")) {
779 _glapi_noop_enable_warnings(GL_TRUE
);
780 #ifndef GLX_DIRECT_RENDERING
781 /* libGL from before 2002/06/28 don't have this function. Someday,
782 * when newer libGL libs are common, remove the #ifdef test. This
783 * only serves to print warnings when calling undefined GL functions.
785 _glapi_set_warning_func( (_glapi_warning_func
) _mesa_warning
);
789 _glapi_noop_enable_warnings(GL_FALSE
);
792 #if defined(DEBUG) && defined(__DATE__) && defined(__TIME__)
793 _mesa_debug(ctx
, "Mesa DEBUG build %s %s\n", __DATE__
, __TIME__
);
796 alreadyCalled
= GL_TRUE
;
798 _glthread_UNLOCK_MUTEX(OneTimeLock
);
802 * Allocate and initialize a shared context state structure.
804 * \return pointer to a gl_shared_state structure on success, or NULL on
807 * Initializes the display list, texture objects and vertex programs hash
808 * tables, allocates the texture objects. If it runs out of memory, frees
809 * everything already allocated before returning NULL.
812 alloc_shared_state( GLcontext
*ctx
)
814 struct gl_shared_state
*ss
= CALLOC_STRUCT(gl_shared_state
);
820 _glthread_INIT_MUTEX(ss
->Mutex
);
822 ss
->DisplayList
= _mesa_NewHashTable();
823 ss
->TexObjects
= _mesa_NewHashTable();
824 #if FEATURE_NV_vertex_program || FEATURE_NV_fragment_program
825 ss
->Programs
= _mesa_NewHashTable();
828 #if FEATURE_ARB_vertex_program
829 ss
->DefaultVertexProgram
= _mesa_alloc_program(ctx
, GL_VERTEX_PROGRAM_ARB
, 0);
830 if (!ss
->DefaultVertexProgram
)
833 #if FEATURE_ARB_fragment_program
834 ss
->DefaultFragmentProgram
= _mesa_alloc_program(ctx
, GL_FRAGMENT_PROGRAM_ARB
, 0);
835 if (!ss
->DefaultFragmentProgram
)
839 ss
->BufferObjects
= _mesa_NewHashTable();
841 ss
->Default1D
= (*ctx
->Driver
.NewTextureObject
)(ctx
, 0, GL_TEXTURE_1D
);
845 ss
->Default2D
= (*ctx
->Driver
.NewTextureObject
)(ctx
, 0, GL_TEXTURE_2D
);
849 ss
->Default3D
= (*ctx
->Driver
.NewTextureObject
)(ctx
, 0, GL_TEXTURE_3D
);
853 ss
->DefaultCubeMap
= (*ctx
->Driver
.NewTextureObject
)(ctx
, 0, GL_TEXTURE_CUBE_MAP_ARB
);
854 if (!ss
->DefaultCubeMap
)
857 ss
->DefaultRect
= (*ctx
->Driver
.NewTextureObject
)(ctx
, 0, GL_TEXTURE_RECTANGLE_NV
);
858 if (!ss
->DefaultRect
)
862 _mesa_save_texture_object(ctx
, ss
->Default1D
);
863 _mesa_save_texture_object(ctx
, ss
->Default2D
);
864 _mesa_save_texture_object(ctx
, ss
->Default3D
);
865 _mesa_save_texture_object(ctx
, ss
->DefaultCubeMap
);
866 _mesa_save_texture_object(ctx
, ss
->DefaultRect
);
869 /* Effectively bind the default textures to all texture units */
870 ss
->Default1D
->RefCount
+= MAX_TEXTURE_IMAGE_UNITS
;
871 ss
->Default2D
->RefCount
+= MAX_TEXTURE_IMAGE_UNITS
;
872 ss
->Default3D
->RefCount
+= MAX_TEXTURE_IMAGE_UNITS
;
873 ss
->DefaultCubeMap
->RefCount
+= MAX_TEXTURE_IMAGE_UNITS
;
874 ss
->DefaultRect
->RefCount
+= MAX_TEXTURE_IMAGE_UNITS
;
879 /* Ran out of memory at some point. Free everything and return NULL */
881 _mesa_DeleteHashTable(ss
->DisplayList
);
883 _mesa_DeleteHashTable(ss
->TexObjects
);
884 #if FEATURE_NV_vertex_program
886 _mesa_DeleteHashTable(ss
->Programs
);
888 #if FEATURE_ARB_vertex_program
889 if (ss
->DefaultVertexProgram
)
890 _mesa_delete_program(ctx
, ss
->DefaultVertexProgram
);
892 #if FEATURE_ARB_fragment_program
893 if (ss
->DefaultFragmentProgram
)
894 _mesa_delete_program(ctx
, ss
->DefaultFragmentProgram
);
896 if (ss
->BufferObjects
)
897 _mesa_DeleteHashTable(ss
->BufferObjects
);
900 (*ctx
->Driver
.DeleteTexture
)(ctx
, ss
->Default1D
);
902 (*ctx
->Driver
.DeleteTexture
)(ctx
, ss
->Default2D
);
904 (*ctx
->Driver
.DeleteTexture
)(ctx
, ss
->Default3D
);
905 if (ss
->DefaultCubeMap
)
906 (*ctx
->Driver
.DeleteTexture
)(ctx
, ss
->DefaultCubeMap
);
908 (*ctx
->Driver
.DeleteTexture
)(ctx
, ss
->DefaultRect
);
915 * Deallocate a shared state context and all children structures.
917 * \param ctx GL context.
918 * \param ss shared state pointer.
920 * Frees the display lists, the texture objects (calling the driver texture
921 * deletion callback to free its private data) and the vertex programs, as well
922 * as their hash tables.
924 * \sa alloc_shared_state().
927 free_shared_state( GLcontext
*ctx
, struct gl_shared_state
*ss
)
929 /* Free display lists */
931 GLuint list
= _mesa_HashFirstEntry(ss
->DisplayList
);
933 _mesa_destroy_list(ctx
, list
);
939 _mesa_DeleteHashTable(ss
->DisplayList
);
941 /* Free texture objects */
942 ASSERT(ctx
->Driver
.DeleteTexture
);
944 GLuint texName
= _mesa_HashFirstEntry(ss
->TexObjects
);
946 struct gl_texture_object
*texObj
= (struct gl_texture_object
*)
947 _mesa_HashLookup(ss
->TexObjects
, texName
);
949 (*ctx
->Driver
.DeleteTexture
)(ctx
, texObj
);
950 _mesa_HashRemove(ss
->TexObjects
, texName
);
956 _mesa_DeleteHashTable(ss
->TexObjects
);
958 #if FEATURE_NV_vertex_program
959 /* Free vertex programs */
961 GLuint prog
= _mesa_HashFirstEntry(ss
->Programs
);
963 struct program
*p
= (struct program
*) _mesa_HashLookup(ss
->Programs
,
966 _mesa_delete_program(ctx
, p
);
967 _mesa_HashRemove(ss
->Programs
, prog
);
973 _mesa_DeleteHashTable(ss
->Programs
);
976 _mesa_DeleteHashTable(ss
->BufferObjects
);
978 _glthread_DESTROY_MUTEX(ss
->Mutex
);
984 static void _mesa_init_current( GLcontext
*ctx
)
989 for (i
= 0; i
< VERT_ATTRIB_MAX
; i
++) {
990 ASSIGN_4V( ctx
->Current
.Attrib
[i
], 0.0, 0.0, 0.0, 1.0 );
993 ASSIGN_4V( ctx
->Current
.Attrib
[VERT_ATTRIB_WEIGHT
], 1.0, 0.0, 0.0, 1.0 );
994 ASSIGN_4V( ctx
->Current
.Attrib
[VERT_ATTRIB_NORMAL
], 0.0, 0.0, 1.0, 1.0 );
995 ASSIGN_4V( ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
], 1.0, 1.0, 1.0, 1.0 );
996 ASSIGN_4V( ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR1
], 0.0, 0.0, 0.0, 0.0 );
997 ASSIGN_4V( ctx
->Current
.Attrib
[VERT_ATTRIB_FOG
], 0.0, 0.0, 0.0, 0.0 );
998 for (i
= 0; i
< MAX_TEXTURE_UNITS
; i
++)
999 ASSIGN_4V( ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ i
], 0.0, 0.0, 0.0, 1.0);
1000 ctx
->Current
.Index
= 1;
1001 ctx
->Current
.EdgeFlag
= GL_TRUE
;
1006 _mesa_init_constants( GLcontext
*ctx
)
1010 assert(MAX_TEXTURE_LEVELS
>= MAX_3D_TEXTURE_LEVELS
);
1011 assert(MAX_TEXTURE_LEVELS
>= MAX_CUBE_TEXTURE_LEVELS
);
1013 /* Constants, may be overriden by device drivers */
1014 ctx
->Const
.MaxTextureLevels
= MAX_TEXTURE_LEVELS
;
1015 ctx
->Const
.Max3DTextureLevels
= MAX_3D_TEXTURE_LEVELS
;
1016 ctx
->Const
.MaxCubeTextureLevels
= MAX_CUBE_TEXTURE_LEVELS
;
1017 ctx
->Const
.MaxTextureRectSize
= MAX_TEXTURE_RECT_SIZE
;
1018 ctx
->Const
.MaxTextureUnits
= MAX_TEXTURE_UNITS
;
1019 ctx
->Const
.MaxTextureCoordUnits
= MAX_TEXTURE_COORD_UNITS
;
1020 ctx
->Const
.MaxTextureImageUnits
= MAX_TEXTURE_IMAGE_UNITS
;
1021 ctx
->Const
.MaxTextureMaxAnisotropy
= MAX_TEXTURE_MAX_ANISOTROPY
;
1022 ctx
->Const
.MaxTextureLodBias
= MAX_TEXTURE_LOD_BIAS
;
1023 ctx
->Const
.MaxArrayLockSize
= MAX_ARRAY_LOCK_SIZE
;
1024 ctx
->Const
.SubPixelBits
= SUB_PIXEL_BITS
;
1025 ctx
->Const
.MinPointSize
= MIN_POINT_SIZE
;
1026 ctx
->Const
.MaxPointSize
= MAX_POINT_SIZE
;
1027 ctx
->Const
.MinPointSizeAA
= MIN_POINT_SIZE
;
1028 ctx
->Const
.MaxPointSizeAA
= MAX_POINT_SIZE
;
1029 ctx
->Const
.PointSizeGranularity
= (GLfloat
) POINT_SIZE_GRANULARITY
;
1030 ctx
->Const
.MinLineWidth
= MIN_LINE_WIDTH
;
1031 ctx
->Const
.MaxLineWidth
= MAX_LINE_WIDTH
;
1032 ctx
->Const
.MinLineWidthAA
= MIN_LINE_WIDTH
;
1033 ctx
->Const
.MaxLineWidthAA
= MAX_LINE_WIDTH
;
1034 ctx
->Const
.LineWidthGranularity
= (GLfloat
) LINE_WIDTH_GRANULARITY
;
1035 ctx
->Const
.NumAuxBuffers
= NUM_AUX_BUFFERS
;
1036 ctx
->Const
.MaxColorTableSize
= MAX_COLOR_TABLE_SIZE
;
1037 ctx
->Const
.MaxConvolutionWidth
= MAX_CONVOLUTION_WIDTH
;
1038 ctx
->Const
.MaxConvolutionHeight
= MAX_CONVOLUTION_HEIGHT
;
1039 ctx
->Const
.MaxClipPlanes
= MAX_CLIP_PLANES
;
1040 ctx
->Const
.MaxLights
= MAX_LIGHTS
;
1041 ctx
->Const
.MaxSpotExponent
= 128.0;
1042 ctx
->Const
.MaxShininess
= 128.0;
1043 #if FEATURE_ARB_vertex_program
1044 ctx
->Const
.MaxVertexProgramInstructions
= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS
;
1045 ctx
->Const
.MaxVertexProgramAttribs
= MAX_NV_VERTEX_PROGRAM_INPUTS
;
1046 ctx
->Const
.MaxVertexProgramTemps
= MAX_NV_VERTEX_PROGRAM_TEMPS
;
1047 ctx
->Const
.MaxVertexProgramLocalParams
= MAX_NV_VERTEX_PROGRAM_PARAMS
;
1048 ctx
->Const
.MaxVertexProgramEnvParams
= MAX_NV_VERTEX_PROGRAM_PARAMS
;/*XXX*/
1049 ctx
->Const
.MaxVertexProgramAddressRegs
= MAX_VERTEX_PROGRAM_ADDRESS_REGS
;
1051 #if FEATURE_ARB_fragment_program
1052 ctx
->Const
.MaxFragmentProgramInstructions
= MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS
;
1053 ctx
->Const
.MaxFragmentProgramAttribs
= MAX_NV_FRAGMENT_PROGRAM_INPUTS
;
1054 ctx
->Const
.MaxFragmentProgramTemps
= MAX_NV_FRAGMENT_PROGRAM_TEMPS
;
1055 ctx
->Const
.MaxFragmentProgramLocalParams
= MAX_NV_FRAGMENT_PROGRAM_PARAMS
;
1056 ctx
->Const
.MaxFragmentProgramEnvParams
= MAX_NV_FRAGMENT_PROGRAM_PARAMS
;/*XXX*/
1057 ctx
->Const
.MaxFragmentProgramAddressRegs
= MAX_FRAGMENT_PROGRAM_ADDRESS_REGS
;
1058 ctx
->Const
.MaxFragmentProgramAluInstructions
= MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS
;
1059 ctx
->Const
.MaxFragmentProgramTexInstructions
= MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS
;
1060 ctx
->Const
.MaxFragmentProgramTexIndirections
= MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS
;
1062 ctx
->Const
.MaxProgramMatrices
= MAX_PROGRAM_MATRICES
;
1063 ctx
->Const
.MaxProgramMatrixStackDepth
= MAX_PROGRAM_MATRIX_STACK_DEPTH
;
1065 /* If we're running in the X server, do bounds checking to prevent
1066 * segfaults and server crashes!
1068 #if defined(XFree86LOADER) && defined(IN_MODULE)
1069 ctx
->Const
.CheckArrayBounds
= GL_TRUE
;
1071 ctx
->Const
.CheckArrayBounds
= GL_FALSE
;
1074 ASSERT(ctx
->Const
.MaxTextureUnits
== MAX2(ctx
->Const
.MaxTextureImageUnits
, ctx
->Const
.MaxTextureCoordUnits
));
1078 * Initialize the attribute groups in a GL context.
1080 * \param ctx GL context.
1082 * Initializes all the attributes, calling the respective <tt>init*</tt>
1083 * functions for the more complex data structures.
1086 init_attrib_groups( GLcontext
*ctx
)
1091 _mesa_init_constants( ctx
);
1094 _mesa_init_extensions( ctx
);
1096 /* Attribute Groups */
1097 _mesa_init_accum( ctx
);
1098 _mesa_init_attrib( ctx
);
1099 _mesa_init_buffers( ctx
);
1100 _mesa_init_buffer_objects( ctx
);
1101 _mesa_init_color( ctx
);
1102 _mesa_init_colortables( ctx
);
1103 _mesa_init_current( ctx
);
1104 _mesa_init_depth( ctx
);
1105 _mesa_init_debug( ctx
);
1106 _mesa_init_display_list( ctx
);
1107 _mesa_init_eval( ctx
);
1108 _mesa_init_feedback( ctx
);
1109 _mesa_init_fog( ctx
);
1110 _mesa_init_histogram( ctx
);
1111 _mesa_init_hint( ctx
);
1112 _mesa_init_line( ctx
);
1113 _mesa_init_lighting( ctx
);
1114 _mesa_init_matrix( ctx
);
1115 _mesa_init_occlude( ctx
);
1116 _mesa_init_pixel( ctx
);
1117 _mesa_init_point( ctx
);
1118 _mesa_init_polygon( ctx
);
1119 _mesa_init_program( ctx
);
1120 _mesa_init_rastpos( ctx
);
1121 _mesa_init_stencil( ctx
);
1122 _mesa_init_transform( ctx
);
1123 _mesa_init_varray( ctx
);
1124 _mesa_init_viewport( ctx
);
1126 if (!_mesa_init_texture( ctx
))
1130 ctx
->NewState
= _NEW_ALL
;
1131 ctx
->ErrorValue
= (GLenum
) GL_NO_ERROR
;
1132 ctx
->CatchSignals
= GL_TRUE
;
1140 * If the DRI libGL.so library is old, it may not have the entrypoints for
1141 * some recent OpenGL extensions. Dynamically add them now.
1142 * If we're building stand-alone Mesa where libGL.so has both the dispatcher
1143 * and driver code, this won't be an issue (and calling this function won't
1147 add_newer_entrypoints(void)
1150 static const struct {
1151 const char * const name
;
1154 newer_entrypoints
[] = {
1155 /* GL_ARB_window_pos aliases with GL_MESA_window_pos */
1156 { "glWindowPos2dARB", 513 },
1157 { "glWindowPos2dvARB", 514 },
1158 { "glWindowPos2fARB", 515 },
1159 { "glWindowPos2fvARB", 516 },
1160 { "glWindowPos2iARB", 517 },
1161 { "glWindowPos2ivARB", 518 },
1162 { "glWindowPos2sARB", 519 },
1163 { "glWindowPos2svARB", 520 },
1164 { "glWindowPos3dARB", 521 },
1165 { "glWindowPos3dvARB", 522 },
1166 { "glWindowPos3fARB", 523 },
1167 { "glWindowPos3fvARB", 524 },
1168 { "glWindowPos3iARB", 525 },
1169 { "glWindowPos3ivARB", 526 },
1170 { "glWindowPos3sARB", 527 },
1171 { "glWindowPos3svARB", 528 },
1172 #if FEATURE_NV_vertex_program
1173 { "glAreProgramsResidentNV", 578 },
1174 { "glBindProgramNV", 579 },
1175 { "glDeleteProgramsNV", 580 },
1176 { "glExecuteProgramNV", 581 },
1177 { "glGenProgramsNV", 582 },
1178 { "glGetProgramParameterdvNV", 583 },
1179 { "glGetProgramParameterfvNV", 584 },
1180 { "glGetProgramivNV", 585 },
1181 { "glGetProgramStringNV", 586 },
1182 { "glGetTrackMatrixivNV", 587 },
1183 { "glGetVertexAttribdvNV", 588 },
1184 { "glGetVertexAttribfvNV", 589 },
1185 { "glGetVertexAttribivNV", 590 },
1186 { "glGetVertexAttribPointervNV", 591 },
1187 { "glIsProgramNV", 592 },
1188 { "glLoadProgramNV", 593 },
1189 { "glProgramParameter4dNV", 594 },
1190 { "glProgramParameter4dvNV", 595 },
1191 { "glProgramParameter4fNV", 596 },
1192 { "glProgramParameter4fvNV", 597 },
1193 { "glProgramParameters4dvNV", 598 },
1194 { "glProgramParameters4fvNV", 599 },
1195 { "glRequestResidentProgramsNV", 600 },
1196 { "glTrackMatrixNV", 601 },
1197 { "glVertexAttribPointerNV", 602 },
1198 { "glVertexAttrib1dNV", 603 },
1199 { "glVertexAttrib1dvNV", 604 },
1200 { "glVertexAttrib1fNV", 605 },
1201 { "glVertexAttrib1fvNV", 606 },
1202 { "glVertexAttrib1sNV", 607 },
1203 { "glVertexAttrib1svNV", 608 },
1204 { "glVertexAttrib2dNV", 609 },
1205 { "glVertexAttrib2dvNV", 610 },
1206 { "glVertexAttrib2fNV", 611 },
1207 { "glVertexAttrib2fvNV", 612 },
1208 { "glVertexAttrib2sNV", 613 },
1209 { "glVertexAttrib2svNV", 614 },
1210 { "glVertexAttrib3dNV", 615 },
1211 { "glVertexAttrib3dvNV", 616 },
1212 { "glVertexAttrib3fNV", 617 },
1213 { "glVertexAttrib3fvNV", 618 },
1214 { "glVertexAttrib3sNV", 619 },
1215 { "glVertexAttrib3svNV", 620 },
1216 { "glVertexAttrib4dNV", 621 },
1217 { "glVertexAttrib4dvNV", 622 },
1218 { "glVertexAttrib4fNV", 623 },
1219 { "glVertexAttrib4fvNV", 624 },
1220 { "glVertexAttrib4sNV", 625 },
1221 { "glVertexAttrib4svNV", 626 },
1222 { "glVertexAttrib4ubNV", 627 },
1223 { "glVertexAttrib4ubvNV", 628 },
1224 { "glVertexAttribs1dvNV", 629 },
1225 { "glVertexAttribs1fvNV", 630 },
1226 { "glVertexAttribs1svNV", 631 },
1227 { "glVertexAttribs2dvNV", 632 },
1228 { "glVertexAttribs2fvNV", 633 },
1229 { "glVertexAttribs2svNV", 634 },
1230 { "glVertexAttribs3dvNV", 635 },
1231 { "glVertexAttribs3fvNV", 636 },
1232 { "glVertexAttribs3svNV", 637 },
1233 { "glVertexAttribs4dvNV", 638 },
1234 { "glVertexAttribs4fvNV", 639 },
1235 { "glVertexAttribs4svNV", 640 },
1236 { "glVertexAttribs4ubvNV", 641 },
1238 { "glPointParameteriNV", 642 },
1239 { "glPointParameterivNV", 643 },
1240 { "glMultiDrawArraysEXT", 644 },
1241 { "glMultiDrawElementsEXT", 645 },
1242 { "glMultiDrawArraysSUN", _gloffset_MultiDrawArraysEXT
},
1243 { "glMultiDrawElementsSUN", _gloffset_MultiDrawElementsEXT
},
1244 { "glActiveStencilFaceEXT", 646 },
1245 #if FEATURE_NV_fence
1246 { "glDeleteFencesNV", 647 },
1247 { "glGenFencesNV", 648 },
1248 { "glIsFenceNV", 649 },
1249 { "glTestFenceNV", 650 },
1250 { "glGetFenceivNV", 651 },
1251 { "glFinishFenceNV", 652 },
1252 { "glSetFenceNV", 653 },
1254 #if FEATURE_NV_fragment_program
1255 { "glProgramNamedParameter4fNV", 682 },
1256 { "glProgramNamedParameter4dNV", 683 },
1257 { "glProgramNamedParameter4fvNV", 683 },
1258 { "glProgramNamedParameter4dvNV", 684 },
1259 { "glGetProgramNamedParameterfvNV", 685 },
1260 { "glGetProgramNamedParameterdvNV", 686 },
1262 #if FEATURE_ARB_vertex_program
1263 { "glVertexAttrib1sARB", _gloffset_VertexAttrib1sNV
},
1264 { "glVertexAttrib1fARB", _gloffset_VertexAttrib1fNV
},
1265 { "glVertexAttrib1dARB", _gloffset_VertexAttrib1dNV
},
1266 { "glVertexAttrib2sARB", _gloffset_VertexAttrib2sNV
},
1267 { "glVertexAttrib2fARB", _gloffset_VertexAttrib2fNV
},
1268 { "glVertexAttrib2dARB", _gloffset_VertexAttrib2dNV
},
1269 { "glVertexAttrib3sARB", _gloffset_VertexAttrib3sNV
},
1270 { "glVertexAttrib3fARB", _gloffset_VertexAttrib3fNV
},
1271 { "glVertexAttrib3dARB", _gloffset_VertexAttrib3dNV
},
1272 { "glVertexAttrib4sARB", _gloffset_VertexAttrib4sNV
},
1273 { "glVertexAttrib4fARB", _gloffset_VertexAttrib4fNV
},
1274 { "glVertexAttrib4dARB", _gloffset_VertexAttrib4dNV
},
1275 { "glVertexAttrib4NubARB", _gloffset_VertexAttrib4ubNV
},
1276 { "glVertexAttrib1svARB", _gloffset_VertexAttrib1svNV
},
1277 { "glVertexAttrib1fvARB", _gloffset_VertexAttrib1fvNV
},
1278 { "glVertexAttrib1dvARB", _gloffset_VertexAttrib1dvNV
},
1279 { "glVertexAttrib2svARB", _gloffset_VertexAttrib2svNV
},
1280 { "glVertexAttrib2fvARB", _gloffset_VertexAttrib2fvNV
},
1281 { "glVertexAttrib2dvARB", _gloffset_VertexAttrib2dvNV
},
1282 { "glVertexAttrib3svARB", _gloffset_VertexAttrib3svNV
},
1283 { "glVertexAttrib3fvARB", _gloffset_VertexAttrib3fvNV
},
1284 { "glVertexAttrib3dvARB", _gloffset_VertexAttrib3dvNV
},
1285 { "glVertexAttrib4bvARB", _gloffset_VertexAttrib4bvARB
},
1286 { "glVertexAttrib4svARB", _gloffset_VertexAttrib4svNV
},
1287 { "glVertexAttrib4ivARB", _gloffset_VertexAttrib4ivARB
},
1288 { "glVertexAttrib4ubvARB", _gloffset_VertexAttrib4ubvARB
},
1289 { "glVertexAttrib4usvARB", _gloffset_VertexAttrib4usvARB
},
1290 { "glVertexAttrib4uivARB", _gloffset_VertexAttrib4uivARB
},
1291 { "glVertexAttrib4fvARB", _gloffset_VertexAttrib4fvNV
},
1292 { "glVertexAttrib4dvARB", _gloffset_VertexAttrib4dvNV
},
1293 { "glVertexAttrib4NbvARB", _gloffset_VertexAttrib4NbvARB
},
1294 { "glVertexAttrib4NsvARB", _gloffset_VertexAttrib4NsvARB
},
1295 { "glVertexAttrib4NivARB", _gloffset_VertexAttrib4NivARB
},
1296 { "glVertexAttrib4NubvARB", _gloffset_VertexAttrib4ubvNV
},
1297 { "glVertexAttrib4NusvARB", _gloffset_VertexAttrib4NusvARB
},
1298 { "glVertexAttrib4NuivARB", _gloffset_VertexAttrib4NuivARB
},
1299 { "glVertexAttribPointerARB", _gloffset_VertexAttribPointerARB
},
1300 { "glEnableVertexAttribArrayARB", _gloffset_EnableVertexAttribArrayARB
},
1301 { "glDisableVertexAttribArrayARB", _gloffset_DisableVertexAttribArrayARB
},
1302 { "glProgramStringARB", _gloffset_ProgramStringARB
},
1303 { "glBindProgramARB", _gloffset_BindProgramNV
},
1304 { "glDeleteProgramsARB", _gloffset_DeleteProgramsNV
},
1305 { "glGenProgramsARB", _gloffset_GenProgramsNV
},
1306 { "glIsProgramARB", _gloffset_IsProgramNV
},
1307 { "glProgramEnvParameter4dARB", _gloffset_ProgramEnvParameter4dARB
},
1308 { "glProgramEnvParameter4dvARB", _gloffset_ProgramEnvParameter4dvARB
},
1309 { "glProgramEnvParameter4fARB", _gloffset_ProgramEnvParameter4fARB
},
1310 { "glProgramEnvParameter4fvARB", _gloffset_ProgramEnvParameter4fvARB
},
1311 { "glProgramLocalParameter4dARB", _gloffset_ProgramLocalParameter4dARB
},
1312 { "glProgramLocalParameter4dvARB", _gloffset_ProgramLocalParameter4dvARB
},
1313 { "glProgramLocalParameter4fARB", _gloffset_ProgramLocalParameter4fARB
},
1314 { "glProgramLocalParameter4fvARB", _gloffset_ProgramLocalParameter4fvARB
},
1315 { "glGetProgramEnvParameterdvARB", _gloffset_GetProgramEnvParameterdvARB
},
1316 { "glGetProgramEnvParameterfvARB", _gloffset_GetProgramEnvParameterfvARB
},
1317 { "glGetProgramLocalParameterdvARB", _gloffset_GetProgramLocalParameterdvARB
},
1318 { "glGetProgramLocalParameterfvARB", _gloffset_GetProgramLocalParameterfvARB
},
1319 { "glGetProgramivARB", _gloffset_GetProgramivARB
},
1320 { "glGetProgramStringARB", _gloffset_GetProgramStringARB
},
1321 { "glGetVertexAttribdvARB", _gloffset_GetVertexAttribdvNV
},
1322 { "glGetVertexAttribfvARB", _gloffset_GetVertexAttribfvNV
},
1323 { "glGetVertexAttribivARB", _gloffset_GetVertexAttribivNV
},
1324 { "glGetVertexAttribPointervARB", _gloffset_GetVertexAttribPointervNV
},
1326 { "glMultiModeDrawArraysIBM", _gloffset_MultiModeDrawArraysIBM
},
1327 { "glMultiModeDrawElementsIBM", _gloffset_MultiModeDrawElementsIBM
},
1330 for ( i
= 0 ; i
< Elements(newer_entrypoints
) ; i
++ ) {
1331 _glapi_add_entrypoint( newer_entrypoints
[i
].name
,
1332 newer_entrypoints
[i
].offset
);
1338 * Initialize a GLcontext struct.
1340 * This includes allocating all the other structs and arrays which hang off of
1341 * the context by pointers.
1343 * \sa _mesa_create_context() for the parameter description.
1345 * Performs the imports and exports callback tables initialization, and
1346 * miscellaneous one-time initializations. If no shared context is supplied one
1347 * is allocated, and increase its reference count. Setups the GL API dispatch
1348 * tables. Initialize the TNL module. Sets the maximum Z buffer depth.
1349 * Finally queries the \c MESA_DEBUG and \c MESA_VERBOSE environment variables
1352 * \note the direct parameter is ignored (obsolete).
1355 _mesa_initialize_context( GLcontext
*ctx
,
1356 const GLvisual
*visual
,
1357 GLcontext
*share_list
,
1361 GLuint dispatchSize
;
1365 /* If the driver wants core Mesa to use special imports, it'll have to
1366 * override these defaults.
1368 _mesa_init_default_imports( &(ctx
->imports
), driver_ctx
);
1370 /* initialize the exports (Mesa functions called by the window system) */
1371 _mesa_init_default_exports( &(ctx
->exports
) );
1373 /* misc one-time initializations */
1376 ctx
->DriverCtx
= driver_ctx
;
1377 ctx
->Visual
= *visual
;
1378 ctx
->DrawBuffer
= NULL
;
1379 ctx
->ReadBuffer
= NULL
;
1381 /* Set these pointers to defaults now in case they're not set since
1382 * we need them while creating the default textures.
1384 if (!ctx
->Driver
.NewTextureObject
)
1385 ctx
->Driver
.NewTextureObject
= _mesa_new_texture_object
;
1386 if (!ctx
->Driver
.DeleteTexture
)
1387 ctx
->Driver
.DeleteTexture
= _mesa_delete_texture_object
;
1388 if (!ctx
->Driver
.NewTextureImage
)
1389 ctx
->Driver
.NewTextureImage
= _mesa_new_texture_image
;
1392 /* share state with another context */
1393 ctx
->Shared
= share_list
->Shared
;
1396 /* allocate new, unshared state */
1397 if (!alloc_shared_state( ctx
)) {
1401 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1402 ctx
->Shared
->RefCount
++;
1403 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1405 if (!init_attrib_groups( ctx
)) {
1406 free_shared_state(ctx
, ctx
->Shared
);
1410 /* libGL ABI coordination */
1411 add_newer_entrypoints();
1413 /* Find the larger of Mesa's dispatch table and libGL's dispatch table.
1414 * In practice, this'll be the same for stand-alone Mesa. But for DRI
1415 * Mesa we do this to accomodate different versions of libGL and various
1418 dispatchSize
= MAX2(_glapi_get_dispatch_table_size(),
1419 sizeof(struct _glapi_table
) / sizeof(void *));
1421 /* setup API dispatch tables */
1422 ctx
->Exec
= (struct _glapi_table
*) CALLOC(dispatchSize
* sizeof(void*));
1423 ctx
->Save
= (struct _glapi_table
*) CALLOC(dispatchSize
* sizeof(void*));
1424 if (!ctx
->Exec
|| !ctx
->Save
) {
1425 free_shared_state(ctx
, ctx
->Shared
);
1429 _mesa_init_exec_table(ctx
->Exec
, dispatchSize
);
1430 ctx
->CurrentDispatch
= ctx
->Exec
;
1433 _mesa_init_dlist_table(ctx
->Save
, dispatchSize
);
1434 _mesa_install_save_vtxfmt( ctx
, &ctx
->ListState
.ListVtxfmt
);
1437 /* Neutral tnl module stuff */
1438 _mesa_init_exec_vtxfmt( ctx
);
1439 ctx
->TnlModule
.Current
= NULL
;
1440 ctx
->TnlModule
.SwapCount
= 0;
1447 * Allocate and initialize a GLcontext structure.
1449 * \param visual a GLvisual pointer (we copy the struct contents)
1450 * \param share_list another context to share display lists with or NULL
1451 * \param driver_ctx pointer to device driver's context state struct
1452 * \param direct obsolete, ignored
1454 * \return pointer to a new __GLcontextRec or NULL if error.
1457 _mesa_create_context( const GLvisual
*visual
,
1458 GLcontext
*share_list
,
1468 ctx
= (GLcontext
*) _mesa_calloc(sizeof(GLcontext
));
1472 if (_mesa_initialize_context(ctx
, visual
, share_list
, driver_ctx
, direct
)) {
1482 * Free the data associated with the given context.
1484 * But doesn't free the GLcontext struct itself.
1486 * \sa _mesa_initialize_context() and init_attrib_groups().
1489 _mesa_free_context_data( GLcontext
*ctx
)
1491 /* if we're destroying the current context, unbind it first */
1492 if (ctx
== _mesa_get_current_context()) {
1493 _mesa_make_current(NULL
, NULL
);
1496 _mesa_free_lighting_data( ctx
);
1497 _mesa_free_eval_data( ctx
);
1498 _mesa_free_texture_data( ctx
);
1499 _mesa_free_matrix_data( ctx
);
1500 _mesa_free_viewport_data( ctx
);
1501 _mesa_free_colortables_data( ctx
);
1502 #if FEATURE_NV_vertex_program
1503 if (ctx
->VertexProgram
.Current
) {
1504 ctx
->VertexProgram
.Current
->Base
.RefCount
--;
1505 if (ctx
->VertexProgram
.Current
->Base
.RefCount
<= 0)
1506 _mesa_delete_program(ctx
, &(ctx
->VertexProgram
.Current
->Base
));
1509 #if FEATURE_NV_fragment_program
1510 if (ctx
->FragmentProgram
.Current
) {
1511 ctx
->FragmentProgram
.Current
->Base
.RefCount
--;
1512 if (ctx
->FragmentProgram
.Current
->Base
.RefCount
<= 0)
1513 _mesa_delete_program(ctx
, &(ctx
->FragmentProgram
.Current
->Base
));
1517 /* Shared context state (display lists, textures, etc) */
1518 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1519 ctx
->Shared
->RefCount
--;
1520 assert(ctx
->Shared
->RefCount
>= 0);
1521 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1522 if (ctx
->Shared
->RefCount
== 0) {
1523 /* free shared state */
1524 free_shared_state( ctx
, ctx
->Shared
);
1527 if (ctx
->Extensions
.String
)
1528 FREE((void *) ctx
->Extensions
.String
);
1535 * Destroy a GLcontext structure.
1537 * \param ctx GL context.
1539 * Calls _mesa_free_context_data() and free the structure.
1542 _mesa_destroy_context( GLcontext
*ctx
)
1545 _mesa_free_context_data(ctx
);
1546 FREE( (void *) ctx
);
1552 * Copy attribute groups from one context to another.
1554 * \param src source context
1555 * \param dst destination context
1556 * \param mask bitwise OR of GL_*_BIT flags
1558 * According to the bits specified in \p mask, copies the corresponding
1559 * attributes from \p src into \dst. For many of the attributes a simple \c
1560 * memcpy is not enough due to the existence of internal pointers in their data
1564 _mesa_copy_context( const GLcontext
*src
, GLcontext
*dst
, GLuint mask
)
1566 if (mask
& GL_ACCUM_BUFFER_BIT
) {
1568 dst
->Accum
= src
->Accum
;
1570 if (mask
& GL_COLOR_BUFFER_BIT
) {
1572 dst
->Color
= src
->Color
;
1574 if (mask
& GL_CURRENT_BIT
) {
1576 dst
->Current
= src
->Current
;
1578 if (mask
& GL_DEPTH_BUFFER_BIT
) {
1580 dst
->Depth
= src
->Depth
;
1582 if (mask
& GL_ENABLE_BIT
) {
1585 if (mask
& GL_EVAL_BIT
) {
1587 dst
->Eval
= src
->Eval
;
1589 if (mask
& GL_FOG_BIT
) {
1591 dst
->Fog
= src
->Fog
;
1593 if (mask
& GL_HINT_BIT
) {
1595 dst
->Hint
= src
->Hint
;
1597 if (mask
& GL_LIGHTING_BIT
) {
1599 /* begin with memcpy */
1600 MEMCPY( &dst
->Light
, &src
->Light
, sizeof(struct gl_light
) );
1601 /* fixup linked lists to prevent pointer insanity */
1602 make_empty_list( &(dst
->Light
.EnabledList
) );
1603 for (i
= 0; i
< MAX_LIGHTS
; i
++) {
1604 if (dst
->Light
.Light
[i
].Enabled
) {
1605 insert_at_tail(&(dst
->Light
.EnabledList
), &(dst
->Light
.Light
[i
]));
1609 if (mask
& GL_LINE_BIT
) {
1611 dst
->Line
= src
->Line
;
1613 if (mask
& GL_LIST_BIT
) {
1615 dst
->List
= src
->List
;
1617 if (mask
& GL_PIXEL_MODE_BIT
) {
1619 dst
->Pixel
= src
->Pixel
;
1621 if (mask
& GL_POINT_BIT
) {
1623 dst
->Point
= src
->Point
;
1625 if (mask
& GL_POLYGON_BIT
) {
1627 dst
->Polygon
= src
->Polygon
;
1629 if (mask
& GL_POLYGON_STIPPLE_BIT
) {
1630 /* Use loop instead of MEMCPY due to problem with Portland Group's
1631 * C compiler. Reported by John Stone.
1634 for (i
= 0; i
< 32; i
++) {
1635 dst
->PolygonStipple
[i
] = src
->PolygonStipple
[i
];
1638 if (mask
& GL_SCISSOR_BIT
) {
1640 dst
->Scissor
= src
->Scissor
;
1642 if (mask
& GL_STENCIL_BUFFER_BIT
) {
1644 dst
->Stencil
= src
->Stencil
;
1646 if (mask
& GL_TEXTURE_BIT
) {
1647 /* Cannot memcpy because of pointers */
1648 _mesa_copy_texture_state(src
, dst
);
1650 if (mask
& GL_TRANSFORM_BIT
) {
1652 dst
->Transform
= src
->Transform
;
1654 if (mask
& GL_VIEWPORT_BIT
) {
1655 /* Cannot use memcpy, because of pointers in GLmatrix _WindowMap */
1656 dst
->Viewport
.X
= src
->Viewport
.X
;
1657 dst
->Viewport
.Y
= src
->Viewport
.Y
;
1658 dst
->Viewport
.Width
= src
->Viewport
.Width
;
1659 dst
->Viewport
.Height
= src
->Viewport
.Height
;
1660 dst
->Viewport
.Near
= src
->Viewport
.Near
;
1661 dst
->Viewport
.Far
= src
->Viewport
.Far
;
1662 _math_matrix_copy(&dst
->Viewport
._WindowMap
, &src
->Viewport
._WindowMap
);
1665 /* XXX FIXME: Call callbacks?
1667 dst
->NewState
= _NEW_ALL
;
1673 * Check if the given context can render into the given framebuffer
1674 * by checking visual attributes.
1675 * \return GL_TRUE if compatible, GL_FALSE otherwise.
1678 check_compatible(const GLcontext
*ctx
, const GLframebuffer
*buffer
)
1680 const GLvisual
*ctxvis
= &ctx
->Visual
;
1681 const GLvisual
*bufvis
= &buffer
->Visual
;
1683 if (ctxvis
== bufvis
)
1686 if (ctxvis
->rgbMode
!= bufvis
->rgbMode
)
1688 if (ctxvis
->doubleBufferMode
&& !bufvis
->doubleBufferMode
)
1690 if (ctxvis
->stereoMode
&& !bufvis
->stereoMode
)
1692 if (ctxvis
->haveAccumBuffer
&& !bufvis
->haveAccumBuffer
)
1694 if (ctxvis
->haveDepthBuffer
&& !bufvis
->haveDepthBuffer
)
1696 if (ctxvis
->haveStencilBuffer
&& !bufvis
->haveStencilBuffer
)
1698 if (ctxvis
->redMask
&& ctxvis
->redMask
!= bufvis
->redMask
)
1700 if (ctxvis
->greenMask
&& ctxvis
->greenMask
!= bufvis
->greenMask
)
1702 if (ctxvis
->blueMask
&& ctxvis
->blueMask
!= bufvis
->blueMask
)
1704 if (ctxvis
->depthBits
&& ctxvis
->depthBits
!= bufvis
->depthBits
)
1706 if (ctxvis
->stencilBits
&& ctxvis
->stencilBits
!= bufvis
->stencilBits
)
1714 * Set the current context, binding the given frame buffer to the context.
1716 * \param newCtx new GL context.
1717 * \param buffer framebuffer.
1719 * Calls _mesa_make_current2() with \p buffer as read and write framebuffer.
1722 _mesa_make_current( GLcontext
*newCtx
, GLframebuffer
*buffer
)
1724 _mesa_make_current2( newCtx
, buffer
, buffer
);
1728 * Bind the given context to the given draw-buffer and read-buffer and
1729 * make it the current context for this thread.
1731 * \param newCtx new GL context. If NULL then there will be no current GL
1733 * \param drawBuffer draw framebuffer.
1734 * \param readBuffer read framebuffer.
1736 * Check that the context's and framebuffer's visuals are compatible, returning
1737 * immediately otherwise. Sets the glapi current context via
1738 * _glapi_set_context(). If \p newCtx is not NULL, associates \p drawBuffer and
1739 * \p readBuffer with it and calls dd_function_table::ResizeBuffers if the buffers size has changed.
1740 * Calls dd_function_table::MakeCurrent callback if defined.
1742 * When a context is bound by the first time and the \c MESA_INFO environment
1743 * variable is set it calls print_info() as an aid for remote user
1747 _mesa_make_current2( GLcontext
*newCtx
, GLframebuffer
*drawBuffer
,
1748 GLframebuffer
*readBuffer
)
1751 _mesa_debug(newCtx
, "_mesa_make_current2()\n");
1753 /* Check that the context's and framebuffer's visuals are compatible.
1755 if (newCtx
&& drawBuffer
&& newCtx
->DrawBuffer
!= drawBuffer
) {
1756 if (!check_compatible(newCtx
, drawBuffer
))
1759 if (newCtx
&& readBuffer
&& newCtx
->ReadBuffer
!= readBuffer
) {
1760 if (!check_compatible(newCtx
, readBuffer
))
1764 /* We call this function periodically (just here for now) in
1765 * order to detect when multithreading has begun.
1767 _glapi_check_multithread();
1769 _glapi_set_context((void *) newCtx
);
1770 ASSERT(_mesa_get_current_context() == newCtx
);
1774 _glapi_set_dispatch(NULL
); /* none current */
1777 _glapi_set_dispatch(newCtx
->CurrentDispatch
);
1779 if (drawBuffer
&& readBuffer
) {
1780 /* TODO: check if newCtx and buffer's visual match??? */
1781 newCtx
->DrawBuffer
= drawBuffer
;
1782 newCtx
->ReadBuffer
= readBuffer
;
1783 newCtx
->NewState
|= _NEW_BUFFERS
;
1786 if (drawBuffer
->Width
== 0 && drawBuffer
->Height
== 0) {
1787 /* get initial window size */
1788 GLuint bufWidth
, bufHeight
;
1790 /* ask device driver for size of output buffer */
1791 (*newCtx
->Driver
.GetBufferSize
)( drawBuffer
, &bufWidth
, &bufHeight
);
1793 if (drawBuffer
->Width
!= bufWidth
||
1794 drawBuffer
->Height
!= bufHeight
) {
1796 drawBuffer
->Width
= bufWidth
;
1797 drawBuffer
->Height
= bufHeight
;
1799 newCtx
->Driver
.ResizeBuffers( drawBuffer
);
1803 if (readBuffer
!= drawBuffer
&&
1804 readBuffer
->Width
== 0 && readBuffer
->Height
== 0) {
1805 /* get initial window size */
1806 GLuint bufWidth
, bufHeight
;
1808 /* ask device driver for size of output buffer */
1809 (*newCtx
->Driver
.GetBufferSize
)( readBuffer
, &bufWidth
, &bufHeight
);
1811 if (readBuffer
->Width
!= bufWidth
||
1812 readBuffer
->Height
!= bufHeight
) {
1814 readBuffer
->Width
= bufWidth
;
1815 readBuffer
->Height
= bufHeight
;
1817 newCtx
->Driver
.ResizeBuffers( readBuffer
);
1823 /* Alert the driver - usually passed on to the sw t&l module,
1824 * but also used to detect threaded cases in the radeon codegen
1827 if (newCtx
->Driver
.MakeCurrent
)
1828 newCtx
->Driver
.MakeCurrent( newCtx
, drawBuffer
, readBuffer
);
1830 /* We can use this to help debug user's problems. Tell them to set
1831 * the MESA_INFO env variable before running their app. Then the
1832 * first time each context is made current we'll print some useful
1835 if (newCtx
->FirstTimeCurrent
) {
1836 if (_mesa_getenv("MESA_INFO")) {
1839 newCtx
->FirstTimeCurrent
= GL_FALSE
;
1845 * Get current context for the calling thread.
1847 * \return pointer to the current GL context.
1849 * Calls _glapi_get_context(). This isn't the fastest way to get the current
1850 * context. If you need speed, see the #GET_CURRENT_CONTEXT macro in context.h.
1853 _mesa_get_current_context( void )
1855 return (GLcontext
*) _glapi_get_context();
1859 * Get context's current API dispatch table.
1861 * It'll either be the immediate-mode execute dispatcher or the display list
1862 * compile dispatcher.
1864 * \param ctx GL context.
1866 * \return pointer to dispatch_table.
1868 * Simply returns __GLcontextRec::CurrentDispatch.
1870 struct _glapi_table
*
1871 _mesa_get_dispatch(GLcontext
*ctx
)
1873 return ctx
->CurrentDispatch
;
1879 /**********************************************************************/
1880 /** \name Miscellaneous functions */
1881 /**********************************************************************/
1887 * \param ctx GL context.
1888 * \param error error code.
1890 * Records the given error code and call the driver's dd_function_table::Error
1891 * function if defined.
1894 * This is called via _mesa_error().
1897 _mesa_record_error( GLcontext
*ctx
, GLenum error
)
1902 if (ctx
->ErrorValue
== GL_NO_ERROR
) {
1903 ctx
->ErrorValue
= error
;
1906 /* Call device driver's error handler, if any. This is used on the Mac. */
1907 if (ctx
->Driver
.Error
) {
1908 (*ctx
->Driver
.Error
)( ctx
);
1913 * Execute glFinish().
1915 * Calls the #ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH macro and the
1916 * dd_function_table::Finish driver callback, if not NULL.
1919 _mesa_Finish( void )
1921 GET_CURRENT_CONTEXT(ctx
);
1922 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
1923 if (ctx
->Driver
.Finish
) {
1924 (*ctx
->Driver
.Finish
)( ctx
);
1929 * Execute glFlush().
1931 * Calls the #ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH macro and the
1932 * dd_function_table::Flush driver callback, if not NULL.
1937 GET_CURRENT_CONTEXT(ctx
);
1938 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
1939 if (ctx
->Driver
.Flush
) {
1940 (*ctx
->Driver
.Flush
)( ctx
);