2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * All the XMesa* API functions.
33 * The window coordinate system origin (0,0) is in the lower-left corner
34 * of the window. X11's window coordinate origin is in the upper-left
35 * corner of the window. Therefore, most drawing functions in this
36 * file have to flip Y coordinates.
39 * Byte swapping: If the Mesa host and the X display use a different
40 * byte order then there's some trickiness to be aware of when using
41 * XImages. The byte ordering used for the XImage is that of the X
42 * display, not the Mesa host.
43 * The color-to-pixel encoding for True/DirectColor must be done
44 * according to the display's visual red_mask, green_mask, and blue_mask.
45 * If XPutPixel is used to put a pixel into an XImage then XPutPixel will
46 * do byte swapping if needed. If one wants to directly "poke" the pixel
47 * into the XImage's buffer then the pixel must be byte swapped first.
59 #include "pipe/p_defines.h"
60 #include "pipe/p_screen.h"
61 #include "pipe/p_context.h"
62 #include "util/u_atomic.h"
64 #include "xm_public.h"
68 /* Driver interface routines, set up by xlib backend on library
69 * _init(). These are global in the same way that function names are
72 static struct xm_driver driver
;
73 static struct st_api
*stapi
;
75 /* Default strict invalidate to false. This means we will not call
76 * XGetGeometry after every swapbuffers, which allows swapbuffers to
77 * remain asynchronous. For apps running at 100fps with synchronous
78 * swapping, a 10% boost is typical. For gears, I see closer to 20%
81 * Note that the work of copying data on swapbuffers doesn't disappear
82 * - this change just allows the X server to execute the PutImage
83 * asynchronously without us effectively blocked until its completion.
85 * This speeds up even llvmpipe's threaded rasterization as the
86 * swapbuffers operation was a large part of the serial component of
89 * The downside of this is correctness - applications which don't call
90 * glViewport on window resizes will get incorrect rendering. A
91 * better solution would be to have per-frame but asynchronous
92 * invalidation. Xcb almost looks as if it could provide this, but
93 * the API doesn't seem to quite be there.
95 boolean xmesa_strict_invalidate
= FALSE
;
97 void xmesa_set_driver( const struct xm_driver
*templ
)
100 stapi
= driver
.create_st_api();
102 xmesa_strict_invalidate
=
103 debug_get_bool_option("XMESA_STRICT_INVALIDATE", FALSE
);
108 * XXX replace this with a linked list, or better yet, try to attach the
109 * gallium/mesa extra bits to the X Display object with XAddExtension().
111 #define MAX_DISPLAYS 10
112 static struct xmesa_display Displays
[MAX_DISPLAYS
];
113 static int NumDisplays
= 0;
116 xmesa_get_param(struct st_manager
*smapi
,
117 enum st_manager_param param
)
120 case ST_MANAGER_BROKEN_INVALIDATE
:
121 return !xmesa_strict_invalidate
;
128 xmesa_init_display( Display
*display
)
130 pipe_static_mutex(init_mutex
);
134 pipe_mutex_lock(init_mutex
);
136 /* Look for XMesaDisplay which corresponds to 'display' */
137 for (i
= 0; i
< NumDisplays
; i
++) {
138 if (Displays
[i
].display
== display
) {
140 pipe_mutex_unlock(init_mutex
);
145 /* Create new XMesaDisplay */
147 assert(NumDisplays
< MAX_DISPLAYS
);
148 xmdpy
= &Displays
[NumDisplays
];
151 if (!xmdpy
->display
&& display
) {
152 xmdpy
->display
= display
;
153 xmdpy
->screen
= driver
.create_pipe_screen(display
);
154 xmdpy
->smapi
= CALLOC_STRUCT(st_manager
);
156 xmdpy
->smapi
->screen
= xmdpy
->screen
;
157 xmdpy
->smapi
->get_param
= xmesa_get_param
;
160 if (xmdpy
->screen
&& xmdpy
->smapi
) {
161 pipe_mutex_init(xmdpy
->mutex
);
165 xmdpy
->screen
->destroy(xmdpy
->screen
);
166 xmdpy
->screen
= NULL
;
173 xmdpy
->display
= NULL
;
176 if (!xmdpy
->display
|| xmdpy
->display
!= display
)
179 pipe_mutex_unlock(init_mutex
);
184 /**********************************************************************/
185 /***** X Utility Functions *****/
186 /**********************************************************************/
190 * Return the host's byte order as LSBFirst or MSBFirst ala X.
192 static int host_byte_order( void )
195 char *cptr
= (char *) &i
;
196 return (*cptr
==1) ? LSBFirst
: MSBFirst
;
203 * Return the true number of bits per pixel for XImages.
204 * For example, if we request a 24-bit deep visual we may actually need/get
205 * 32bpp XImages. This function returns the appropriate bpp.
206 * Input: dpy - the X display
207 * visinfo - desribes the visual to be used for XImages
208 * Return: true number of bits per pixel for XImages
211 bits_per_pixel( XMesaVisual xmv
)
213 Display
*dpy
= xmv
->display
;
214 XVisualInfo
* visinfo
= xmv
->visinfo
;
217 /* Create a temporary XImage */
218 img
= XCreateImage( dpy
, visinfo
->visual
, visinfo
->depth
,
219 ZPixmap
, 0, /*format, offset*/
220 (char*) MALLOC(8), /*data*/
221 1, 1, /*width, height*/
226 /* grab the bits/pixel value */
227 bitsPerPixel
= img
->bits_per_pixel
;
228 /* free the XImage */
231 XDestroyImage( img
);
238 * Determine if a given X window ID is valid (window exists).
239 * Do this by calling XGetWindowAttributes() for the window and
240 * checking if we catch an X error.
241 * Input: dpy - the display
242 * win - the window to check for existance
243 * Return: GL_TRUE - window exists
244 * GL_FALSE - window doesn't exist
246 static GLboolean WindowExistsFlag
;
248 static int window_exists_err_handler( Display
* dpy
, XErrorEvent
* xerr
)
251 if (xerr
->error_code
== BadWindow
) {
252 WindowExistsFlag
= GL_FALSE
;
257 static GLboolean
window_exists( Display
*dpy
, Window win
)
259 XWindowAttributes wa
;
260 int (*old_handler
)( Display
*, XErrorEvent
* );
261 WindowExistsFlag
= GL_TRUE
;
262 old_handler
= XSetErrorHandler(window_exists_err_handler
);
263 XGetWindowAttributes( dpy
, win
, &wa
); /* dummy request */
264 XSetErrorHandler(old_handler
);
265 return WindowExistsFlag
;
269 get_drawable_size( Display
*dpy
, Drawable d
, uint
*width
, uint
*height
)
274 unsigned int w
, h
, bw
, depth
;
275 stat
= XGetGeometry(dpy
, d
, &root
, &xpos
, &ypos
, &w
, &h
, &bw
, &depth
);
283 * Return the size of the window (or pixmap) that corresponds to the
285 * \param width returns width in pixels
286 * \param height returns height in pixels
289 xmesa_get_window_size(Display
*dpy
, XMesaBuffer b
,
290 GLuint
*width
, GLuint
*height
)
292 XMesaDisplay xmdpy
= xmesa_init_display(dpy
);
295 pipe_mutex_lock(xmdpy
->mutex
);
296 stat
= get_drawable_size(dpy
, b
->ws
.drawable
, width
, height
);
297 pipe_mutex_unlock(xmdpy
->mutex
);
300 /* probably querying a window that's recently been destroyed */
301 _mesa_warning(NULL
, "XGetGeometry failed!\n");
302 *width
= *height
= 1;
306 #define GET_REDMASK(__v) __v->mesa_visual.redMask
307 #define GET_GREENMASK(__v) __v->mesa_visual.greenMask
308 #define GET_BLUEMASK(__v) __v->mesa_visual.blueMask
312 * Choose the pixel format for the given visual.
313 * This will tell the gallium driver how to pack pixel data into
317 choose_pixel_format(XMesaVisual v
)
319 boolean native_byte_order
= (host_byte_order() ==
320 ImageByteOrder(v
->display
));
322 if ( GET_REDMASK(v
) == 0x0000ff
323 && GET_GREENMASK(v
) == 0x00ff00
324 && GET_BLUEMASK(v
) == 0xff0000
325 && v
->BitsPerPixel
== 32) {
326 if (native_byte_order
) {
327 /* no byteswapping needed */
328 return PIPE_FORMAT_R8G8B8A8_UNORM
;
331 return PIPE_FORMAT_A8B8G8R8_UNORM
;
334 else if ( GET_REDMASK(v
) == 0xff0000
335 && GET_GREENMASK(v
) == 0x00ff00
336 && GET_BLUEMASK(v
) == 0x0000ff
337 && v
->BitsPerPixel
== 32) {
338 if (native_byte_order
) {
339 /* no byteswapping needed */
340 return PIPE_FORMAT_B8G8R8A8_UNORM
;
343 return PIPE_FORMAT_A8R8G8B8_UNORM
;
346 else if ( GET_REDMASK(v
) == 0x0000ff00
347 && GET_GREENMASK(v
) == 0x00ff0000
348 && GET_BLUEMASK(v
) == 0xff000000
349 && v
->BitsPerPixel
== 32) {
350 if (native_byte_order
) {
351 /* no byteswapping needed */
352 return PIPE_FORMAT_A8R8G8B8_UNORM
;
355 return PIPE_FORMAT_B8G8R8A8_UNORM
;
358 else if ( GET_REDMASK(v
) == 0xf800
359 && GET_GREENMASK(v
) == 0x07e0
360 && GET_BLUEMASK(v
) == 0x001f
362 && v
->BitsPerPixel
== 16) {
364 return PIPE_FORMAT_B5G6R5_UNORM
;
367 return PIPE_FORMAT_NONE
;
372 * Choose a depth/stencil format that satisfies the given depth and
375 static enum pipe_format
376 choose_depth_stencil_format(XMesaDisplay xmdpy
, int depth
, int stencil
)
378 const enum pipe_texture_target target
= PIPE_TEXTURE_2D
;
379 const unsigned tex_usage
= PIPE_BIND_DEPTH_STENCIL
;
380 const unsigned sample_count
= 0;
381 enum pipe_format formats
[8], fmt
;
386 if (depth
<= 16 && stencil
== 0) {
387 formats
[count
++] = PIPE_FORMAT_Z16_UNORM
;
389 if (depth
<= 24 && stencil
== 0) {
390 formats
[count
++] = PIPE_FORMAT_X8Z24_UNORM
;
391 formats
[count
++] = PIPE_FORMAT_Z24X8_UNORM
;
393 if (depth
<= 24 && stencil
<= 8) {
394 formats
[count
++] = PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
395 formats
[count
++] = PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
397 if (depth
<= 32 && stencil
== 0) {
398 formats
[count
++] = PIPE_FORMAT_Z32_UNORM
;
401 fmt
= PIPE_FORMAT_NONE
;
402 for (i
= 0; i
< count
; i
++) {
403 if (xmdpy
->screen
->is_format_supported(xmdpy
->screen
, formats
[i
],
404 target
, sample_count
,
416 /**********************************************************************/
417 /***** Linked list of XMesaBuffers *****/
418 /**********************************************************************/
420 static XMesaBuffer XMesaBufferList
= NULL
;
424 * Allocate a new XMesaBuffer object which corresponds to the given drawable.
425 * Note that XMesaBuffer is derived from struct gl_framebuffer.
426 * The new XMesaBuffer will not have any size (Width=Height=0).
428 * \param d the corresponding X drawable (window or pixmap)
429 * \param type either WINDOW, PIXMAP or PBUFFER, describing d
430 * \param vis the buffer's visual
431 * \param cmap the window's colormap, if known.
432 * \return new XMesaBuffer or NULL if any problem
435 create_xmesa_buffer(Drawable d
, BufferType type
,
436 XMesaVisual vis
, Colormap cmap
)
438 XMesaDisplay xmdpy
= xmesa_init_display(vis
->display
);
442 ASSERT(type
== WINDOW
|| type
== PIXMAP
|| type
== PBUFFER
);
447 b
= (XMesaBuffer
) CALLOC_STRUCT(xmesa_buffer
);
452 b
->ws
.visual
= vis
->visinfo
->visual
;
453 b
->ws
.depth
= vis
->visinfo
->depth
;
459 get_drawable_size(vis
->display
, d
, &width
, &height
);
462 * Create framebuffer, but we'll plug in our own renderbuffers below.
464 b
->stfb
= xmesa_create_st_framebuffer(xmdpy
, b
);
466 /* GLX_EXT_texture_from_pixmap */
467 b
->TextureTarget
= 0;
468 b
->TextureFormat
= GLX_TEXTURE_FORMAT_NONE_EXT
;
469 b
->TextureMipmap
= 0;
471 /* insert buffer into linked list */
472 b
->Next
= XMesaBufferList
;
480 * Find an XMesaBuffer by matching X display and colormap but NOT matching
481 * the notThis buffer.
484 xmesa_find_buffer(Display
*dpy
, Colormap cmap
, XMesaBuffer notThis
)
487 for (b
= XMesaBufferList
; b
; b
= b
->Next
) {
488 if (b
->xm_visual
->display
== dpy
&&
499 * Remove buffer from linked list, delete if no longer referenced.
502 xmesa_free_buffer(XMesaBuffer buffer
)
504 XMesaBuffer prev
= NULL
, b
;
506 for (b
= XMesaBufferList
; b
; b
= b
->Next
) {
508 /* unlink buffer from list */
510 prev
->Next
= buffer
->Next
;
512 XMesaBufferList
= buffer
->Next
;
514 /* Since the X window for the XMesaBuffer is going away, we don't
515 * want to dereference this pointer in the future.
519 /* XXX we should move the buffer to a delete-pending list and destroy
520 * the buffer until it is no longer current.
522 xmesa_destroy_st_framebuffer(buffer
->stfb
);
528 /* continue search */
531 /* buffer not found in XMesaBufferList */
532 _mesa_problem(NULL
,"xmesa_free_buffer() - buffer not found\n");
537 /**********************************************************************/
538 /***** Misc Private Functions *****/
539 /**********************************************************************/
543 * When a context is bound for the first time, we can finally finish
544 * initializing the context's visual and buffer information.
545 * \param v the XMesaVisual to initialize
546 * \param b the XMesaBuffer to initialize (may be NULL)
547 * \param rgb_flag TRUE = RGBA mode, FALSE = color index mode
548 * \param window the window/pixmap we're rendering into
549 * \param cmap the colormap associated with the window/pixmap
550 * \return GL_TRUE=success, GL_FALSE=failure
553 initialize_visual_and_buffer(XMesaVisual v
, XMesaBuffer b
,
554 GLboolean rgb_flag
, Drawable window
,
557 ASSERT(!b
|| b
->xm_visual
== v
);
559 /* Save true bits/pixel */
560 v
->BitsPerPixel
= bits_per_pixel(v
);
561 assert(v
->BitsPerPixel
> 0);
563 if (rgb_flag
== GL_FALSE
) {
564 /* COLOR-INDEXED WINDOW: not supported*/
569 * We support RGB rendering into almost any kind of visual.
571 const int xclass
= v
->visualType
;
572 if (xclass
!= GLX_TRUE_COLOR
&& xclass
== !GLX_DIRECT_COLOR
) {
574 "XMesa: RGB mode rendering not supported in given visual.\n");
577 v
->mesa_visual
.indexBits
= 0;
579 if (v
->BitsPerPixel
== 32) {
580 /* We use XImages for all front/back buffers. If an X Window or
581 * X Pixmap is 32bpp, there's no guarantee that the alpha channel
582 * will be preserved. For XImages we're in luck.
584 v
->mesa_visual
.alphaBits
= 8;
589 * If MESA_INFO env var is set print out some debugging info
590 * which can help Brian figure out what's going on when a user
593 if (_mesa_getenv("MESA_INFO")) {
594 printf("X/Mesa visual = %p\n", (void *) v
);
595 printf("X/Mesa level = %d\n", v
->mesa_visual
.level
);
596 printf("X/Mesa depth = %d\n", v
->visinfo
->depth
);
597 printf("X/Mesa bits per pixel = %d\n", v
->BitsPerPixel
);
605 #define NUM_VISUAL_TYPES 6
608 * Convert an X visual type to a GLX visual type.
610 * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)
612 * \return If \c visualType is a valid X visual type, a GLX visual type will
613 * be returned. Otherwise \c GLX_NONE will be returned.
616 * This code was lifted directly from lib/GL/glx/glcontextmodes.c in the
620 xmesa_convert_from_x_visual_type( int visualType
)
622 static const int glx_visual_types
[ NUM_VISUAL_TYPES
] = {
623 GLX_STATIC_GRAY
, GLX_GRAY_SCALE
,
624 GLX_STATIC_COLOR
, GLX_PSEUDO_COLOR
,
625 GLX_TRUE_COLOR
, GLX_DIRECT_COLOR
628 return ( (unsigned) visualType
< NUM_VISUAL_TYPES
)
629 ? glx_visual_types
[ visualType
] : GLX_NONE
;
633 /**********************************************************************/
634 /***** Public Functions *****/
635 /**********************************************************************/
639 * Create a new X/Mesa visual.
640 * Input: display - X11 display
641 * visinfo - an XVisualInfo pointer
642 * rgb_flag - GL_TRUE = RGB mode,
643 * GL_FALSE = color index mode
644 * alpha_flag - alpha buffer requested?
645 * db_flag - GL_TRUE = double-buffered,
646 * GL_FALSE = single buffered
647 * stereo_flag - stereo visual?
648 * ximage_flag - GL_TRUE = use an XImage for back buffer,
649 * GL_FALSE = use an off-screen pixmap for back buffer
650 * depth_size - requested bits/depth values, or zero
651 * stencil_size - requested bits/stencil values, or zero
652 * accum_red_size - requested bits/red accum values, or zero
653 * accum_green_size - requested bits/green accum values, or zero
654 * accum_blue_size - requested bits/blue accum values, or zero
655 * accum_alpha_size - requested bits/alpha accum values, or zero
656 * num_samples - number of samples/pixel if multisampling, or zero
657 * level - visual level, usually 0
658 * visualCaveat - ala the GLX extension, usually GLX_NONE
659 * Return; a new XMesaVisual or 0 if error.
662 XMesaVisual
XMesaCreateVisual( Display
*display
,
663 XVisualInfo
* visinfo
,
665 GLboolean alpha_flag
,
667 GLboolean stereo_flag
,
668 GLboolean ximage_flag
,
671 GLint accum_red_size
,
672 GLint accum_green_size
,
673 GLint accum_blue_size
,
674 GLint accum_alpha_size
,
679 XMesaDisplay xmdpy
= xmesa_init_display(display
);
681 GLint red_bits
, green_bits
, blue_bits
, alpha_bits
;
686 /* For debugging only */
687 if (_mesa_getenv("MESA_XSYNC")) {
688 /* This makes debugging X easier.
689 * In your debugger, set a breakpoint on _XError to stop when an
690 * X protocol error is generated.
692 XSynchronize( display
, 1 );
695 v
= (XMesaVisual
) CALLOC_STRUCT(xmesa_visual
);
700 v
->display
= display
;
702 /* Save a copy of the XVisualInfo struct because the user may Xfree()
703 * the struct but we may need some of the information contained in it
706 v
->visinfo
= (XVisualInfo
*) MALLOC(sizeof(*visinfo
));
711 memcpy(v
->visinfo
, visinfo
, sizeof(*visinfo
));
713 v
->ximage_flag
= ximage_flag
;
715 v
->mesa_visual
.redMask
= visinfo
->red_mask
;
716 v
->mesa_visual
.greenMask
= visinfo
->green_mask
;
717 v
->mesa_visual
.blueMask
= visinfo
->blue_mask
;
718 v
->visualID
= visinfo
->visualid
;
719 v
->screen
= visinfo
->screen
;
721 #if !(defined(__cplusplus) || defined(c_plusplus))
722 v
->visualType
= xmesa_convert_from_x_visual_type(visinfo
->class);
724 v
->visualType
= xmesa_convert_from_x_visual_type(visinfo
->c_class
);
727 v
->mesa_visual
.visualRating
= visualCaveat
;
730 v
->mesa_visual
.alphaBits
= 8;
732 (void) initialize_visual_and_buffer( v
, NULL
, rgb_flag
, 0, 0 );
735 const int xclass
= v
->visualType
;
736 if (xclass
== GLX_TRUE_COLOR
|| xclass
== GLX_DIRECT_COLOR
) {
737 red_bits
= _mesa_bitcount(GET_REDMASK(v
));
738 green_bits
= _mesa_bitcount(GET_GREENMASK(v
));
739 blue_bits
= _mesa_bitcount(GET_BLUEMASK(v
));
742 /* this is an approximation */
744 depth
= v
->visinfo
->depth
;
745 red_bits
= depth
/ 3;
747 green_bits
= depth
/ 2;
751 assert( red_bits
+ green_bits
+ blue_bits
== v
->visinfo
->depth
);
753 alpha_bits
= v
->mesa_visual
.alphaBits
;
756 /* initialize visual */
758 struct gl_config
*vis
= &v
->mesa_visual
;
760 vis
->rgbMode
= GL_TRUE
;
761 vis
->doubleBufferMode
= db_flag
;
762 vis
->stereoMode
= stereo_flag
;
764 vis
->redBits
= red_bits
;
765 vis
->greenBits
= green_bits
;
766 vis
->blueBits
= blue_bits
;
767 vis
->alphaBits
= alpha_bits
;
768 vis
->rgbBits
= red_bits
+ green_bits
+ blue_bits
;
771 vis
->depthBits
= depth_size
;
772 vis
->stencilBits
= stencil_size
;
774 vis
->accumRedBits
= accum_red_size
;
775 vis
->accumGreenBits
= accum_green_size
;
776 vis
->accumBlueBits
= accum_blue_size
;
777 vis
->accumAlphaBits
= accum_alpha_size
;
779 vis
->haveAccumBuffer
= accum_red_size
> 0;
780 vis
->haveDepthBuffer
= depth_size
> 0;
781 vis
->haveStencilBuffer
= stencil_size
> 0;
783 vis
->numAuxBuffers
= 0;
785 vis
->sampleBuffers
= 0;
789 v
->stvis
.buffer_mask
= ST_ATTACHMENT_FRONT_LEFT_MASK
;
791 v
->stvis
.buffer_mask
|= ST_ATTACHMENT_BACK_LEFT_MASK
;
793 v
->stvis
.buffer_mask
|= ST_ATTACHMENT_FRONT_RIGHT_MASK
;
795 v
->stvis
.buffer_mask
|= ST_ATTACHMENT_BACK_RIGHT_MASK
;
798 v
->stvis
.color_format
= choose_pixel_format(v
);
799 if (v
->stvis
.color_format
== PIPE_FORMAT_NONE
) {
805 v
->stvis
.depth_stencil_format
=
806 choose_depth_stencil_format(xmdpy
, depth_size
, stencil_size
);
808 v
->stvis
.accum_format
= (accum_red_size
+
809 accum_green_size
+ accum_blue_size
+ accum_alpha_size
) ?
810 PIPE_FORMAT_R16G16B16A16_SNORM
: PIPE_FORMAT_NONE
;
812 v
->stvis
.samples
= num_samples
;
813 v
->stvis
.render_buffer
= ST_ATTACHMENT_INVALID
;
816 v
->mesa_visual
.level
= level
;
822 void XMesaDestroyVisual( XMesaVisual v
)
830 * Return the informative name.
840 * Do per-display initializations.
843 xmesa_init( Display
*display
)
845 xmesa_init_display(display
);
850 * Create a new XMesaContext.
851 * \param v the XMesaVisual
852 * \param share_list another XMesaContext with which to share display
853 * lists or NULL if no sharing is wanted.
854 * \return an XMesaContext or NULL if error.
857 XMesaContext
XMesaCreateContext( XMesaVisual v
, XMesaContext share_list
,
858 GLuint major
, GLuint minor
,
859 GLuint profileMask
, GLuint contextFlags
)
861 XMesaDisplay xmdpy
= xmesa_init_display(v
->display
);
862 struct st_context_attribs attribs
;
868 /* Note: the XMesaContext contains a Mesa struct gl_context struct (inheritance) */
869 c
= (XMesaContext
) CALLOC_STRUCT(xmesa_context
);
874 c
->xm_buffer
= NULL
; /* set later by XMesaMakeCurrent */
875 c
->xm_read_buffer
= NULL
;
877 memset(&attribs
, 0, sizeof(attribs
));
878 attribs
.profile
= ST_PROFILE_DEFAULT
;
879 attribs
.visual
= v
->stvis
;
880 attribs
.major
= major
;
881 attribs
.minor
= minor
;
882 if (contextFlags
& GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
)
883 attribs
.flags
|= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE
;
884 if (contextFlags
& GLX_CONTEXT_DEBUG_BIT_ARB
)
885 attribs
.flags
|= ST_CONTEXT_FLAG_DEBUG
;
886 if (contextFlags
& GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB
)
887 attribs
.flags
|= ST_CONTEXT_FLAG_ROBUST_ACCESS
;
888 if (profileMask
& GLX_CONTEXT_CORE_PROFILE_BIT_ARB
)
889 attribs
.flags
|= ST_CONTEXT_FLAG_CORE_PROFILE
;
890 if (profileMask
& GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB
)
891 attribs
.flags
|= ST_CONTEXT_FLAG_COMPATIBLE_PROFILE
;
893 c
->st
= stapi
->create_context(stapi
, xmdpy
->smapi
,
894 &attribs
, (share_list
) ? share_list
->st
: NULL
);
898 c
->st
->st_manager_private
= (void *) c
;
904 c
->st
->destroy(c
->st
);
913 void XMesaDestroyContext( XMesaContext c
)
915 c
->st
->destroy(c
->st
);
917 /* FIXME: We should destroy the screen here, but if we do so, surfaces may
918 * outlive it, causing segfaults
919 struct pipe_screen *screen = c->st->pipe->screen;
920 screen->destroy(screen);
929 * Private function for creating an XMesaBuffer which corresponds to an
930 * X window or pixmap.
931 * \param v the window's XMesaVisual
932 * \param w the window we're wrapping
933 * \return new XMesaBuffer or NULL if error
936 XMesaCreateWindowBuffer(XMesaVisual v
, Window w
)
938 XWindowAttributes attr
;
946 /* Check that window depth matches visual depth */
947 XGetWindowAttributes( v
->display
, w
, &attr
);
949 if (v
->visinfo
->depth
!= depth
) {
950 _mesa_warning(NULL
, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n",
951 v
->visinfo
->depth
, depth
);
957 cmap
= attr
.colormap
;
960 _mesa_warning(NULL
, "Window %u has no colormap!\n", (unsigned int) w
);
961 /* this is weird, a window w/out a colormap!? */
962 /* OK, let's just allocate a new one and hope for the best */
963 cmap
= XCreateColormap(v
->display
, w
, attr
.visual
, AllocNone
);
966 b
= create_xmesa_buffer((Drawable
) w
, WINDOW
, v
, cmap
);
970 if (!initialize_visual_and_buffer( v
, b
, v
->mesa_visual
.rgbMode
,
971 (Drawable
) w
, cmap
)) {
972 xmesa_free_buffer(b
);
982 * Create a new XMesaBuffer from an X pixmap.
984 * \param v the XMesaVisual
985 * \param p the pixmap
986 * \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or
987 * \c GLX_DIRECT_COLOR visual for the pixmap
988 * \returns new XMesaBuffer or NULL if error
991 XMesaCreatePixmapBuffer(XMesaVisual v
, Pixmap p
, Colormap cmap
)
997 b
= create_xmesa_buffer((Drawable
) p
, PIXMAP
, v
, cmap
);
1001 if (!initialize_visual_and_buffer(v
, b
, v
->mesa_visual
.rgbMode
,
1002 (Drawable
) p
, cmap
)) {
1003 xmesa_free_buffer(b
);
1012 * For GLX_EXT_texture_from_pixmap
1015 XMesaCreatePixmapTextureBuffer(XMesaVisual v
, Pixmap p
,
1017 int format
, int target
, int mipmap
)
1019 GET_CURRENT_CONTEXT(ctx
);
1024 b
= create_xmesa_buffer((Drawable
) p
, PIXMAP
, v
, cmap
);
1028 /* get pixmap size */
1029 xmesa_get_window_size(v
->display
, b
, &b
->width
, &b
->height
);
1033 if (ctx
->Extensions
.ARB_texture_non_power_of_two
) {
1034 target
= GLX_TEXTURE_2D_EXT
;
1036 else if ( _mesa_bitcount(b
->width
) == 1
1037 && _mesa_bitcount(b
->height
) == 1) {
1038 /* power of two size */
1039 if (b
->height
== 1) {
1040 target
= GLX_TEXTURE_1D_EXT
;
1043 target
= GLX_TEXTURE_2D_EXT
;
1046 else if (ctx
->Extensions
.NV_texture_rectangle
) {
1047 target
= GLX_TEXTURE_RECTANGLE_EXT
;
1050 /* non power of two textures not supported */
1051 XMesaDestroyBuffer(b
);
1056 b
->TextureTarget
= target
;
1057 b
->TextureFormat
= format
;
1058 b
->TextureMipmap
= mipmap
;
1060 if (!initialize_visual_and_buffer(v
, b
, v
->mesa_visual
.rgbMode
,
1061 (Drawable
) p
, cmap
)) {
1062 xmesa_free_buffer(b
);
1072 XMesaCreatePBuffer(XMesaVisual v
, Colormap cmap
,
1073 unsigned int width
, unsigned int height
)
1076 Drawable drawable
; /* X Pixmap Drawable */
1079 /* allocate pixmap for front buffer */
1080 root
= RootWindow( v
->display
, v
->visinfo
->screen
);
1081 drawable
= XCreatePixmap(v
->display
, root
, width
, height
,
1086 b
= create_xmesa_buffer(drawable
, PBUFFER
, v
, cmap
);
1090 if (!initialize_visual_and_buffer(v
, b
, v
->mesa_visual
.rgbMode
,
1092 xmesa_free_buffer(b
);
1102 * Deallocate an XMesaBuffer structure and all related info.
1105 XMesaDestroyBuffer(XMesaBuffer b
)
1107 xmesa_free_buffer(b
);
1112 * Notify the binding context to validate the buffer.
1115 xmesa_notify_invalid_buffer(XMesaBuffer b
)
1117 p_atomic_inc(&b
->stfb
->stamp
);
1122 * Query the current drawable size and notify the binding context.
1125 xmesa_check_buffer_size(XMesaBuffer b
)
1127 GLuint old_width
, old_height
;
1129 if (b
->type
== PBUFFER
)
1132 old_width
= b
->width
;
1133 old_height
= b
->height
;
1135 xmesa_get_window_size(b
->xm_visual
->display
, b
, &b
->width
, &b
->height
);
1137 if (b
->width
!= old_width
|| b
->height
!= old_height
)
1138 xmesa_notify_invalid_buffer(b
);
1143 * Bind buffer b to context c and make c the current rendering context.
1146 GLboolean
XMesaMakeCurrent2( XMesaContext c
, XMesaBuffer drawBuffer
,
1147 XMesaBuffer readBuffer
)
1149 XMesaContext old_ctx
= XMesaGetCurrentContext();
1151 if (old_ctx
&& old_ctx
!= c
) {
1152 XMesaFlush(old_ctx
);
1153 old_ctx
->xm_buffer
= NULL
;
1154 old_ctx
->xm_read_buffer
= NULL
;
1158 if (!drawBuffer
|| !readBuffer
)
1159 return GL_FALSE
; /* must specify buffers! */
1162 c
->xm_buffer
== drawBuffer
&&
1163 c
->xm_read_buffer
== readBuffer
)
1166 xmesa_check_buffer_size(drawBuffer
);
1167 if (readBuffer
!= drawBuffer
)
1168 xmesa_check_buffer_size(readBuffer
);
1170 c
->xm_buffer
= drawBuffer
;
1171 c
->xm_read_buffer
= readBuffer
;
1173 stapi
->make_current(stapi
, c
->st
, drawBuffer
->stfb
, readBuffer
->stfb
);
1175 /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */
1176 drawBuffer
->wasCurrent
= GL_TRUE
;
1180 stapi
->make_current(stapi
, NULL
, NULL
, NULL
);
1188 * Unbind the context c from its buffer.
1190 GLboolean
XMesaUnbindContext( XMesaContext c
)
1192 /* A no-op for XFree86 integration purposes */
1197 XMesaContext
XMesaGetCurrentContext( void )
1199 struct st_context_iface
*st
= stapi
->get_current(stapi
);
1200 return (XMesaContext
) (st
) ? st
->st_manager_private
: NULL
;
1206 * Swap front and back color buffers and have winsys display front buffer.
1207 * If there's no front color buffer no swap actually occurs.
1210 void XMesaSwapBuffers( XMesaBuffer b
)
1212 XMesaContext xmctx
= XMesaGetCurrentContext();
1214 if (xmctx
&& xmctx
->xm_buffer
== b
) {
1215 xmctx
->st
->flush( xmctx
->st
, ST_FLUSH_FRONT
, NULL
);
1218 xmesa_swap_st_framebuffer(b
->stfb
);
1224 * Copy sub-region of back buffer to front buffer
1226 void XMesaCopySubBuffer( XMesaBuffer b
, int x
, int y
, int width
, int height
)
1228 xmesa_copy_st_framebuffer(b
->stfb
,
1229 ST_ATTACHMENT_BACK_LEFT
, ST_ATTACHMENT_FRONT_LEFT
,
1230 x
, y
, width
, height
);
1235 void XMesaFlush( XMesaContext c
)
1237 if (c
&& c
->xm_visual
->display
) {
1238 XMesaDisplay xmdpy
= xmesa_init_display(c
->xm_visual
->display
);
1239 struct pipe_fence_handle
*fence
= NULL
;
1241 c
->st
->flush(c
->st
, ST_FLUSH_FRONT
, &fence
);
1243 xmdpy
->screen
->fence_finish(xmdpy
->screen
, fence
,
1244 PIPE_TIMEOUT_INFINITE
);
1245 xmdpy
->screen
->fence_reference(xmdpy
->screen
, &fence
, NULL
);
1247 XFlush( c
->xm_visual
->display
);
1255 XMesaBuffer
XMesaFindBuffer( Display
*dpy
, Drawable d
)
1258 for (b
= XMesaBufferList
; b
; b
= b
->Next
) {
1259 if (b
->ws
.drawable
== d
&& b
->xm_visual
->display
== dpy
) {
1268 * Free/destroy all XMesaBuffers associated with given display.
1270 void xmesa_destroy_buffers_on_display(Display
*dpy
)
1272 XMesaBuffer b
, next
;
1273 for (b
= XMesaBufferList
; b
; b
= next
) {
1275 if (b
->xm_visual
->display
== dpy
) {
1276 xmesa_free_buffer(b
);
1277 /* delete head of list? */
1278 if (XMesaBufferList
== b
) {
1279 XMesaBufferList
= next
;
1287 * Look for XMesaBuffers whose X window has been destroyed.
1288 * Deallocate any such XMesaBuffers.
1290 void XMesaGarbageCollect( void )
1292 XMesaBuffer b
, next
;
1293 for (b
=XMesaBufferList
; b
; b
=next
) {
1296 b
->xm_visual
->display
&&
1298 b
->type
== WINDOW
) {
1299 XSync(b
->xm_visual
->display
, False
);
1300 if (!window_exists( b
->xm_visual
->display
, b
->ws
.drawable
)) {
1301 /* found a dead window, free the ancillary info */
1302 XMesaDestroyBuffer( b
);
1312 XMesaBindTexImage(Display
*dpy
, XMesaBuffer drawable
, int buffer
,
1313 const int *attrib_list
)
1320 XMesaReleaseTexImage(Display
*dpy
, XMesaBuffer drawable
, int buffer
)
1326 XMesaCopyContext(XMesaContext src
, XMesaContext dst
, unsigned long mask
)
1329 dst
->st
->copy(dst
->st
, src
->st
, mask
);