2 * Copyright © 2010 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Soft-
6 * ware"), to deal in the Software without restriction, including without
7 * limitation the rights to use, copy, modify, merge, publish, distribute,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, provided that the above copyright
10 * notice(s) and this permission notice appear in all copies of the Soft-
11 * ware and that both the above copyright notice(s) and this permission
12 * notice appear in supporting documentation.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
16 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
17 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
18 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
19 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
22 * MANCE OF THIS SOFTWARE.
24 * Except as contained in this notice, the name of a copyright holder shall
25 * not be used in advertising or otherwise to promote the sale, use or
26 * other dealings in this Software without prior written authorization of
27 * the copyright holder.
30 * Kristian Høgsberg (krh@bitplanet.net)
36 #include "glxclient.h"
38 #include "util/debug.h"
40 #ifndef GLX_USE_APPLEGL
42 extern struct _glapi_table
*__glXNewIndirectAPI(void);
45 ** All indirect rendering contexts will share the same indirect dispatch table.
47 static struct _glapi_table
*IndirectAPI
= NULL
;
50 indirect_destroy_context(struct glx_context
*gc
)
52 __glXFreeVertexArrayState(gc
);
54 free((char *) gc
->vendor
);
55 free((char *) gc
->renderer
);
56 free((char *) gc
->version
);
57 free((char *) gc
->extensions
);
58 __glFreeAttributeState(gc
);
59 free((char *) gc
->buf
);
60 free((char *) gc
->client_state_private
);
65 SendMakeCurrentRequest(Display
* dpy
, GLXContextID gc_id
,
66 GLXContextTag gc_tag
, GLXDrawable draw
,
67 GLXDrawable read
, GLXContextTag
*out_tag
)
69 xGLXMakeCurrentReply reply
;
71 int opcode
= __glXSetupForCommand(dpy
);
76 xGLXMakeCurrentReq
*req
;
78 GetReq(GLXMakeCurrent
, req
);
79 req
->reqType
= opcode
;
80 req
->glxCode
= X_GLXMakeCurrent
;
83 req
->oldContextTag
= gc_tag
;
86 struct glx_display
*priv
= __glXInitialize(dpy
);
88 /* If the server can support the GLX 1.3 version, we should
89 * perfer that. Not only that, some servers support GLX 1.3 but
90 * not the SGI extension.
93 if ((priv
->majorVersion
> 1) || (priv
->minorVersion
>= 3)) {
94 xGLXMakeContextCurrentReq
*req
;
96 GetReq(GLXMakeContextCurrent
, req
);
97 req
->reqType
= opcode
;
98 req
->glxCode
= X_GLXMakeContextCurrent
;
100 req
->readdrawable
= read
;
101 req
->context
= gc_id
;
102 req
->oldContextTag
= gc_tag
;
105 xGLXVendorPrivateWithReplyReq
*vpreq
;
106 xGLXMakeCurrentReadSGIReq
*req
;
108 GetReqExtra(GLXVendorPrivateWithReply
,
109 sz_xGLXMakeCurrentReadSGIReq
-
110 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
111 req
= (xGLXMakeCurrentReadSGIReq
*) vpreq
;
112 req
->reqType
= opcode
;
113 req
->glxCode
= X_GLXVendorPrivateWithReply
;
114 req
->vendorCode
= X_GLXvop_MakeCurrentReadSGI
;
115 req
->drawable
= draw
;
116 req
->readable
= read
;
117 req
->context
= gc_id
;
118 req
->oldContextTag
= gc_tag
;
122 ret
= _XReply(dpy
, (xReply
*) &reply
, 0, False
);
125 *out_tag
= reply
.contextTag
;
134 indirect_bind_context(struct glx_context
*gc
, struct glx_context
*old
,
135 GLXDrawable draw
, GLXDrawable read
)
138 Display
*dpy
= gc
->psc
->dpy
;
141 if (old
!= &dummyContext
&& !old
->isDirect
&& old
->psc
->dpy
== dpy
) {
142 tag
= old
->currentContextTag
;
143 old
->currentContextTag
= 0;
148 sent
= SendMakeCurrentRequest(dpy
, gc
->xid
, tag
, draw
, read
,
149 &gc
->currentContextTag
);
153 IndirectAPI
= __glXNewIndirectAPI();
154 _glapi_set_dispatch(IndirectAPI
);
156 /* The indirect vertex array state must to be initialised after we
157 * have setup the context, as it needs to query server attributes.
159 * At the point this is called gc->currentDpy is not initialized
160 * nor is the thread's current context actually set. Hence the
161 * cleverness before the GetString calls.
163 __GLXattribute
*state
= gc
->client_state_private
;
164 if (state
&& state
->array_state
== NULL
) {
165 gc
->currentDpy
= gc
->psc
->dpy
;
166 __glXSetCurrentContext(gc
);
167 __indirect_glGetString(GL_EXTENSIONS
);
168 __indirect_glGetString(GL_VERSION
);
169 __glXInitVertexArrayState(gc
);
177 indirect_unbind_context(struct glx_context
*gc
, struct glx_context
*new)
179 Display
*dpy
= gc
->psc
->dpy
;
184 /* We are either switching to no context, away from an indirect
185 * context to a direct context or from one dpy to another and have
186 * to send a request to the dpy to unbind the previous context.
188 if (!new || new->isDirect
|| new->psc
->dpy
!= dpy
) {
189 SendMakeCurrentRequest(dpy
, None
, gc
->currentContextTag
, None
, None
,
191 gc
->currentContextTag
= 0;
196 indirect_wait_gl(struct glx_context
*gc
)
199 Display
*dpy
= gc
->currentDpy
;
201 /* Flush any pending commands out */
202 __glXFlushRenderBuffer(gc
, gc
->pc
);
204 /* Send the glXWaitGL request */
206 GetReq(GLXWaitGL
, req
);
207 req
->reqType
= gc
->majorOpcode
;
208 req
->glxCode
= X_GLXWaitGL
;
209 req
->contextTag
= gc
->currentContextTag
;
215 indirect_wait_x(struct glx_context
*gc
)
218 Display
*dpy
= gc
->currentDpy
;
220 /* Flush any pending commands out */
221 __glXFlushRenderBuffer(gc
, gc
->pc
);
224 GetReq(GLXWaitX
, req
);
225 req
->reqType
= gc
->majorOpcode
;
226 req
->glxCode
= X_GLXWaitX
;
227 req
->contextTag
= gc
->currentContextTag
;
233 indirect_use_x_font(struct glx_context
*gc
,
234 Font font
, int first
, int count
, int listBase
)
236 xGLXUseXFontReq
*req
;
237 Display
*dpy
= gc
->currentDpy
;
239 /* Flush any pending commands out */
240 __glXFlushRenderBuffer(gc
, gc
->pc
);
242 /* Send the glXUseFont request */
244 GetReq(GLXUseXFont
, req
);
245 req
->reqType
= gc
->majorOpcode
;
246 req
->glxCode
= X_GLXUseXFont
;
247 req
->contextTag
= gc
->currentContextTag
;
251 req
->listBase
= listBase
;
257 indirect_bind_tex_image(Display
* dpy
,
258 GLXDrawable drawable
,
259 int buffer
, const int *attrib_list
)
261 xGLXVendorPrivateReq
*req
;
262 struct glx_context
*gc
= __glXGetCurrentContext();
263 CARD32
*drawable_ptr
;
265 CARD32
*num_attrib_ptr
;
272 while (attrib_list
[i
* 2] != None
)
276 opcode
= __glXSetupForCommand(dpy
);
281 GetReqExtra(GLXVendorPrivate
, 12 + 8 * i
, req
);
282 req
->reqType
= opcode
;
283 req
->glxCode
= X_GLXVendorPrivate
;
284 req
->vendorCode
= X_GLXvop_BindTexImageEXT
;
285 req
->contextTag
= gc
->currentContextTag
;
287 drawable_ptr
= (CARD32
*) (req
+ 1);
288 buffer_ptr
= (INT32
*) (drawable_ptr
+ 1);
289 num_attrib_ptr
= (CARD32
*) (buffer_ptr
+ 1);
290 attrib_ptr
= (CARD32
*) (num_attrib_ptr
+ 1);
292 *drawable_ptr
= drawable
;
293 *buffer_ptr
= buffer
;
294 *num_attrib_ptr
= (CARD32
) i
;
298 while (attrib_list
[i
* 2] != None
) {
299 *attrib_ptr
++ = (CARD32
) attrib_list
[i
* 2 + 0];
300 *attrib_ptr
++ = (CARD32
) attrib_list
[i
* 2 + 1];
310 indirect_release_tex_image(Display
* dpy
, GLXDrawable drawable
, int buffer
)
312 xGLXVendorPrivateReq
*req
;
313 struct glx_context
*gc
= __glXGetCurrentContext();
314 CARD32
*drawable_ptr
;
318 opcode
= __glXSetupForCommand(dpy
);
323 GetReqExtra(GLXVendorPrivate
, sizeof(CARD32
) + sizeof(INT32
), req
);
324 req
->reqType
= opcode
;
325 req
->glxCode
= X_GLXVendorPrivate
;
326 req
->vendorCode
= X_GLXvop_ReleaseTexImageEXT
;
327 req
->contextTag
= gc
->currentContextTag
;
329 drawable_ptr
= (CARD32
*) (req
+ 1);
330 buffer_ptr
= (INT32
*) (drawable_ptr
+ 1);
332 *drawable_ptr
= drawable
;
333 *buffer_ptr
= buffer
;
339 static const struct glx_context_vtable indirect_context_vtable
= {
340 .destroy
= indirect_destroy_context
,
341 .bind
= indirect_bind_context
,
342 .unbind
= indirect_unbind_context
,
343 .wait_gl
= indirect_wait_gl
,
344 .wait_x
= indirect_wait_x
,
345 .use_x_font
= indirect_use_x_font
,
346 .bind_tex_image
= indirect_bind_tex_image
,
347 .release_tex_image
= indirect_release_tex_image
,
348 .get_proc_address
= NULL
,
352 * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new
353 * function called \c __glXAllocateClientState that allocates the memory and
354 * does all the initialization (including the pixel pack / unpack).
357 * This function is \b not the place to validate the context creation
358 * parameters. It is just the allocator for the \c glx_context.
360 _X_HIDDEN
struct glx_context
*
361 indirect_create_context(struct glx_screen
*psc
,
362 struct glx_config
*mode
,
363 struct glx_context
*shareList
, int renderType
)
365 struct glx_context
*gc
;
368 __GLXattribute
*state
;
370 opcode
= __glXSetupForCommand(psc
->dpy
);
375 /* Allocate our context record */
376 gc
= calloc(1, sizeof *gc
);
382 glx_context_init(gc
, psc
, mode
);
383 gc
->isDirect
= GL_FALSE
;
384 gc
->vtable
= &indirect_context_vtable
;
385 state
= calloc(1, sizeof(struct __GLXattributeRec
));
386 gc
->renderType
= renderType
;
393 gc
->client_state_private
= state
;
394 state
->NoDrawArraysProtocol
= env_var_as_boolean("LIBGL_NO_DRAWARRAYS", false);
397 ** Create a temporary buffer to hold GLX rendering commands. The size
398 ** of the buffer is selected so that the maximum number of GLX rendering
399 ** commands can fit in a single X packet and still have room in the X
400 ** packet for the GLXRenderReq header.
403 bufSize
= (XMaxRequestSize(psc
->dpy
) * 4) - sz_xGLXRenderReq
;
404 gc
->buf
= malloc(bufSize
);
406 free(gc
->client_state_private
);
410 gc
->bufSize
= bufSize
;
412 /* Fill in the new context */
413 gc
->renderMode
= GL_RENDER
;
415 state
->storePack
.alignment
= 4;
416 state
->storeUnpack
.alignment
= 4;
418 gc
->attributes
.stackPointer
= &gc
->attributes
.stack
[0];
421 gc
->bufEnd
= gc
->buf
+ bufSize
;
422 gc
->isDirect
= GL_FALSE
;
425 ** Set limit register so that there will be one command per packet
430 gc
->limit
= gc
->buf
+ bufSize
- __GLX_BUFFER_LIMIT_SIZE
;
432 gc
->majorOpcode
= opcode
;
435 ** Constrain the maximum drawing command size allowed to be
436 ** transfered using the X_GLXRender protocol request. First
437 ** constrain by a software limit, then constrain by the protocl
440 if (bufSize
> __GLX_RENDER_CMD_SIZE_LIMIT
) {
441 bufSize
= __GLX_RENDER_CMD_SIZE_LIMIT
;
443 if (bufSize
> __GLX_MAX_RENDER_CMD_SIZE
) {
444 bufSize
= __GLX_MAX_RENDER_CMD_SIZE
;
446 gc
->maxSmallRenderCommandSize
= bufSize
;
452 _X_HIDDEN
struct glx_context
*
453 indirect_create_context_attribs(struct glx_screen
*base
,
454 struct glx_config
*config_base
,
455 struct glx_context
*shareList
,
456 unsigned num_attribs
,
457 const uint32_t *attribs
,
460 int renderType
= GLX_RGBA_TYPE
;
463 /* The error parameter is only used on the server so that correct GLX
464 * protocol errors can be generated. On the client, it can be ignored.
468 /* All of the attribute validation for indirect contexts is handled on the
469 * server, so there's not much to do here. Still, we need to parse the
470 * attributes to correctly set renderType.
472 for (i
= 0; i
< num_attribs
; i
++) {
473 if (attribs
[i
* 2] == GLX_RENDER_TYPE
)
474 renderType
= attribs
[i
* 2 + 1];
477 return indirect_create_context(base
, config_base
, shareList
, renderType
);
480 static const struct glx_screen_vtable indirect_screen_vtable
= {
481 .create_context
= indirect_create_context
,
482 .create_context_attribs
= indirect_create_context_attribs
,
483 .query_renderer_integer
= NULL
,
484 .query_renderer_string
= NULL
,
487 _X_HIDDEN
struct glx_screen
*
488 indirect_create_screen(int screen
, struct glx_display
* priv
)
490 struct glx_screen
*psc
;
492 psc
= calloc(1, sizeof *psc
);
496 glx_screen_init(psc
, screen
, priv
);
497 psc
->vtable
= &indirect_screen_vtable
;