1 /*
2 * Copyright © 2008 Red Hat, Inc.
3 *
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.
13 *
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.
23 *
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.
28 *
29 * Authors:
30 * Kristian Høgsberg (krh@redhat.com)
31 */
32
33 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
34
35 #include <X11/Xlib.h>
36 #include <X11/extensions/Xfixes.h>
37 #include <X11/Xlib-xcb.h>
38 #include <xcb/xcb.h>
39 #include <xcb/dri2.h>
40 #include "glxclient.h"
41 #include <X11/extensions/dri2proto.h>
42 #include <dlfcn.h>
43 #include <fcntl.h>
44 #include <unistd.h>
45 #include <sys/types.h>
46 #include <sys/mman.h>
47 #include <sys/time.h>
48 #include "dri2.h"
49 #include "dri_common.h"
50 #include "dri2_priv.h"
51 #include "loader.h"
52 #include "loader_dri_helper.h"
53
54 #undef DRI2_MINOR
55 #define DRI2_MINOR 1
56
57 struct dri2_display
58 {
59 __GLXDRIdisplay base;
60
61 __glxHashTable *dri2Hash;
62
63 const __DRIextension *loader_extensions[5];
64 };
65
66 struct dri2_drawable
67 {
68 __GLXDRIdrawable base;
69 __DRIdrawable *driDrawable;
70 __DRIbuffer buffers[5];
71 int bufferCount;
72 int width, height;
73 int have_back;
74 int have_fake_front;
75 int swap_interval;
76
77 uint64_t previous_time;
78 unsigned frames;
79 };
80
81 static const struct glx_context_vtable dri2_context_vtable;
82
83 /* For XCB's handling of ust/msc/sbc counters, we have to hand it the high and
84 * low halves separately. This helps you split them.
85 */
86 static void
split_counter(uint64_t counter,uint32_t * hi,uint32_t * lo)87 split_counter(uint64_t counter, uint32_t *hi, uint32_t *lo)
88 {
89 *hi = (counter >> 32);
90 *lo = counter & 0xffffffff;
91 }
92
93 static uint64_t
merge_counter(uint32_t hi,uint32_t lo)94 merge_counter(uint32_t hi, uint32_t lo)
95 {
96 return ((uint64_t)hi << 32) | lo;
97 }
98
99 static void
dri2_destroy_context(struct glx_context * context)100 dri2_destroy_context(struct glx_context *context)
101 {
102 struct dri2_context *pcp = (struct dri2_context *) context;
103 struct dri2_screen *psc = (struct dri2_screen *) context->psc;
104
105 driReleaseDrawables(&pcp->base);
106
107 free((char *) context->extensions);
108
109 (*psc->core->destroyContext) (pcp->driContext);
110
111 free(pcp);
112 }
113
114 static Bool
dri2_bind_context(struct glx_context * context,struct glx_context * old,GLXDrawable draw,GLXDrawable read)115 dri2_bind_context(struct glx_context *context, struct glx_context *old,
116 GLXDrawable draw, GLXDrawable read)
117 {
118 struct dri2_context *pcp = (struct dri2_context *) context;
119 struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
120 struct dri2_drawable *pdraw, *pread;
121 __DRIdrawable *dri_draw = NULL, *dri_read = NULL;
122
123 pdraw = (struct dri2_drawable *) driFetchDrawable(context, draw);
124 pread = (struct dri2_drawable *) driFetchDrawable(context, read);
125
126 driReleaseDrawables(old);
127
128 if (pdraw)
129 dri_draw = pdraw->driDrawable;
130 else if (draw != None)
131 return GLXBadDrawable;
132
133 if (pread)
134 dri_read = pread->driDrawable;
135 else if (read != None)
136 return GLXBadDrawable;
137
138 if (!(*psc->core->bindContext) (pcp->driContext, dri_draw, dri_read))
139 return GLXBadContext;
140
141 return Success;
142 }
143
144 static void
dri2_unbind_context(struct glx_context * context,struct glx_context * new)145 dri2_unbind_context(struct glx_context *context, struct glx_context *new)
146 {
147 struct dri2_context *pcp = (struct dri2_context *) context;
148 struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
149
150 (*psc->core->unbindContext) (pcp->driContext);
151 }
152
153 static struct glx_context *
dri2_create_context_attribs(struct glx_screen * base,struct glx_config * config_base,struct glx_context * shareList,unsigned num_attribs,const uint32_t * attribs,unsigned * error)154 dri2_create_context_attribs(struct glx_screen *base,
155 struct glx_config *config_base,
156 struct glx_context *shareList,
157 unsigned num_attribs,
158 const uint32_t *attribs,
159 unsigned *error)
160 {
161 struct dri2_context *pcp = NULL;
162 struct dri2_context *pcp_shared = NULL;
163 struct dri2_screen *psc = (struct dri2_screen *) base;
164 __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
165 __DRIcontext *shared = NULL;
166
167 struct dri_ctx_attribs dca;
168 uint32_t ctx_attribs[2 * 6];
169 unsigned num_ctx_attribs = 0;
170
171 *error = dri_convert_glx_attribs(num_attribs, attribs, &dca);
172 if (*error != __DRI_CTX_ERROR_SUCCESS)
173 goto error_exit;
174
175 /* Check the renderType value */
176 if (!validate_renderType_against_config(config_base, dca.render_type))
177 goto error_exit;
178
179 if (shareList) {
180 /* We can't share with an indirect context */
181 if (!shareList->isDirect)
182 return NULL;
183
184 /* The GLX_ARB_create_context_no_error specs say:
185 *
186 * BadMatch is generated if the value of GLX_CONTEXT_OPENGL_NO_ERROR_ARB
187 * used to create <share_context> does not match the value of
188 * GLX_CONTEXT_OPENGL_NO_ERROR_ARB for the context being created.
189 */
190 if (!!shareList->noError != !!dca.no_error) {
191 *error = __DRI_CTX_ERROR_BAD_FLAG;
192 return NULL;
193 }
194
195 pcp_shared = (struct dri2_context *) shareList;
196 shared = pcp_shared->driContext;
197 }
198
199 pcp = calloc(1, sizeof *pcp);
200 if (pcp == NULL) {
201 *error = __DRI_CTX_ERROR_NO_MEMORY;
202 goto error_exit;
203 }
204
205 if (!glx_context_init(&pcp->base, &psc->base, config_base))
206 goto error_exit;
207
208 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
209 ctx_attribs[num_ctx_attribs++] = dca.major_ver;
210 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
211 ctx_attribs[num_ctx_attribs++] = dca.minor_ver;
212
213 /* Only send a value when the non-default value is requested. By doing
214 * this we don't have to check the driver's DRI2 version before sending the
215 * default value.
216 */
217 if (dca.reset != __DRI_CTX_RESET_NO_NOTIFICATION) {
218 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
219 ctx_attribs[num_ctx_attribs++] = dca.reset;
220 }
221
222 if (dca.release != __DRI_CTX_RELEASE_BEHAVIOR_FLUSH) {
223 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
224 ctx_attribs[num_ctx_attribs++] = dca.release;
225 }
226
227 if (dca.no_error) {
228 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_NO_ERROR;
229 ctx_attribs[num_ctx_attribs++] = dca.no_error;
230 pcp->base.noError = GL_TRUE;
231 }
232
233 if (dca.flags != 0) {
234 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_FLAGS;
235 ctx_attribs[num_ctx_attribs++] = dca.flags;
236 }
237
238 /* The renderType is retrieved from attribs, or set to default
239 * of GLX_RGBA_TYPE.
240 */
241 pcp->base.renderType = dca.render_type;
242
243 pcp->driContext =
244 (*psc->dri2->createContextAttribs) (psc->driScreen,
245 dca.api,
246 config ? config->driConfig : NULL,
247 shared,
248 num_ctx_attribs / 2,
249 ctx_attribs,
250 error,
251 pcp);
252
253 if (pcp->driContext == NULL)
254 goto error_exit;
255
256 pcp->base.vtable = base->context_vtable;
257
258 return &pcp->base;
259
260 error_exit:
261 free(pcp);
262
263 return NULL;
264 }
265
266 static void
dri2DestroyDrawable(__GLXDRIdrawable * base)267 dri2DestroyDrawable(__GLXDRIdrawable *base)
268 {
269 struct dri2_screen *psc = (struct dri2_screen *) base->psc;
270 struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
271 struct glx_display *dpyPriv = psc->base.display;
272 struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
273
274 __glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
275 (*psc->core->destroyDrawable) (pdraw->driDrawable);
276
277 /* If it's a GLX 1.3 drawables, we can destroy the DRI2 drawable
278 * now, as the application explicitly asked to destroy the GLX
279 * drawable. Otherwise, for legacy drawables, we let the DRI2
280 * drawable linger on the server, since there's no good way of
281 * knowing when the application is done with it. The server will
282 * destroy the DRI2 drawable when it destroys the X drawable or the
283 * client exits anyway. */
284 if (pdraw->base.xDrawable != pdraw->base.drawable)
285 DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
286
287 free(pdraw);
288 }
289
290 static __GLXDRIdrawable *
dri2CreateDrawable(struct glx_screen * base,XID xDrawable,GLXDrawable drawable,int type,struct glx_config * config_base)291 dri2CreateDrawable(struct glx_screen *base, XID xDrawable,
292 GLXDrawable drawable, int type,
293 struct glx_config *config_base)
294 {
295 struct dri2_drawable *pdraw;
296 struct dri2_screen *psc = (struct dri2_screen *) base;
297 __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
298 struct glx_display *dpyPriv;
299 struct dri2_display *pdp;
300
301 dpyPriv = __glXInitialize(psc->base.dpy);
302 if (dpyPriv == NULL)
303 return NULL;
304
305 pdraw = calloc(1, sizeof(*pdraw));
306 if (!pdraw)
307 return NULL;
308
309 pdraw->base.destroyDrawable = dri2DestroyDrawable;
310 pdraw->base.xDrawable = xDrawable;
311 pdraw->base.drawable = drawable;
312 pdraw->base.psc = &psc->base;
313 pdraw->bufferCount = 0;
314 pdraw->swap_interval = dri_get_initial_swap_interval(psc->driScreen, psc->config);
315 pdraw->have_back = 0;
316
317 DRI2CreateDrawable(psc->base.dpy, xDrawable);
318 pdp = (struct dri2_display *)dpyPriv->dri2Display;
319 /* Create a new drawable */
320 pdraw->driDrawable =
321 (*psc->dri2->createNewDrawable) (psc->driScreen,
322 config->driConfig, pdraw);
323
324 if (!pdraw->driDrawable) {
325 DRI2DestroyDrawable(psc->base.dpy, xDrawable);
326 free(pdraw);
327 return NULL;
328 }
329
330 if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
331 (*psc->core->destroyDrawable) (pdraw->driDrawable);
332 DRI2DestroyDrawable(psc->base.dpy, xDrawable);
333 free(pdraw);
334 return None;
335 }
336
337 /*
338 * Make sure server has the same swap interval we do for the new
339 * drawable.
340 */
341 if (psc->vtable.setSwapInterval)
342 psc->vtable.setSwapInterval(&pdraw->base, pdraw->swap_interval);
343
344 return &pdraw->base;
345 }
346
347 static int
dri2DrawableGetMSC(struct glx_screen * psc,__GLXDRIdrawable * pdraw,int64_t * ust,int64_t * msc,int64_t * sbc)348 dri2DrawableGetMSC(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
349 int64_t *ust, int64_t *msc, int64_t *sbc)
350 {
351 xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
352 xcb_dri2_get_msc_cookie_t get_msc_cookie;
353 xcb_dri2_get_msc_reply_t *get_msc_reply;
354
355 get_msc_cookie = xcb_dri2_get_msc_unchecked(c, pdraw->xDrawable);
356 get_msc_reply = xcb_dri2_get_msc_reply(c, get_msc_cookie, NULL);
357
358 if (!get_msc_reply)
359 return 0;
360
361 *ust = merge_counter(get_msc_reply->ust_hi, get_msc_reply->ust_lo);
362 *msc = merge_counter(get_msc_reply->msc_hi, get_msc_reply->msc_lo);
363 *sbc = merge_counter(get_msc_reply->sbc_hi, get_msc_reply->sbc_lo);
364 free(get_msc_reply);
365
366 return 1;
367 }
368
369 static int
dri2WaitForMSC(__GLXDRIdrawable * pdraw,int64_t target_msc,int64_t divisor,int64_t remainder,int64_t * ust,int64_t * msc,int64_t * sbc)370 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
371 int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
372 {
373 xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
374 xcb_dri2_wait_msc_cookie_t wait_msc_cookie;
375 xcb_dri2_wait_msc_reply_t *wait_msc_reply;
376 uint32_t target_msc_hi, target_msc_lo;
377 uint32_t divisor_hi, divisor_lo;
378 uint32_t remainder_hi, remainder_lo;
379
380 split_counter(target_msc, &target_msc_hi, &target_msc_lo);
381 split_counter(divisor, &divisor_hi, &divisor_lo);
382 split_counter(remainder, &remainder_hi, &remainder_lo);
383
384 wait_msc_cookie = xcb_dri2_wait_msc_unchecked(c, pdraw->xDrawable,
385 target_msc_hi, target_msc_lo,
386 divisor_hi, divisor_lo,
387 remainder_hi, remainder_lo);
388 wait_msc_reply = xcb_dri2_wait_msc_reply(c, wait_msc_cookie, NULL);
389
390 if (!wait_msc_reply)
391 return 0;
392
393 *ust = merge_counter(wait_msc_reply->ust_hi, wait_msc_reply->ust_lo);
394 *msc = merge_counter(wait_msc_reply->msc_hi, wait_msc_reply->msc_lo);
395 *sbc = merge_counter(wait_msc_reply->sbc_hi, wait_msc_reply->sbc_lo);
396 free(wait_msc_reply);
397
398 return 1;
399 }
400
401 static int
dri2WaitForSBC(__GLXDRIdrawable * pdraw,int64_t target_sbc,int64_t * ust,int64_t * msc,int64_t * sbc)402 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
403 int64_t *msc, int64_t *sbc)
404 {
405 xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
406 xcb_dri2_wait_sbc_cookie_t wait_sbc_cookie;
407 xcb_dri2_wait_sbc_reply_t *wait_sbc_reply;
408 uint32_t target_sbc_hi, target_sbc_lo;
409
410 split_counter(target_sbc, &target_sbc_hi, &target_sbc_lo);
411
412 wait_sbc_cookie = xcb_dri2_wait_sbc_unchecked(c, pdraw->xDrawable,
413 target_sbc_hi, target_sbc_lo);
414 wait_sbc_reply = xcb_dri2_wait_sbc_reply(c, wait_sbc_cookie, NULL);
415
416 if (!wait_sbc_reply)
417 return 0;
418
419 *ust = merge_counter(wait_sbc_reply->ust_hi, wait_sbc_reply->ust_lo);
420 *msc = merge_counter(wait_sbc_reply->msc_hi, wait_sbc_reply->msc_lo);
421 *sbc = merge_counter(wait_sbc_reply->sbc_hi, wait_sbc_reply->sbc_lo);
422 free(wait_sbc_reply);
423
424 return 1;
425 }
426
427 static __DRIcontext *
dri2GetCurrentContext()428 dri2GetCurrentContext()
429 {
430 struct glx_context *gc = __glXGetCurrentContext();
431 struct dri2_context *dri2Ctx = (struct dri2_context *)gc;
432
433 return (gc != &dummyContext) ? dri2Ctx->driContext : NULL;
434 }
435
436 /**
437 * dri2Throttle - Request driver throttling
438 *
439 * This function uses the DRI2 throttle extension to give the
440 * driver the opportunity to throttle on flush front, copysubbuffer
441 * and swapbuffers.
442 */
443 static void
dri2Throttle(struct dri2_screen * psc,struct dri2_drawable * draw,enum __DRI2throttleReason reason)444 dri2Throttle(struct dri2_screen *psc,
445 struct dri2_drawable *draw,
446 enum __DRI2throttleReason reason)
447 {
448 if (psc->throttle) {
449 __DRIcontext *ctx = dri2GetCurrentContext();
450
451 psc->throttle->throttle(ctx, draw->driDrawable, reason);
452 }
453 }
454
455 /**
456 * Asks the driver to flush any queued work necessary for serializing with the
457 * X command stream, and optionally the slightly more strict requirement of
458 * glFlush() equivalence (which would require flushing even if nothing had
459 * been drawn to a window system framebuffer, for example).
460 */
461 static void
dri2Flush(struct dri2_screen * psc,__DRIcontext * ctx,struct dri2_drawable * draw,unsigned flags,enum __DRI2throttleReason throttle_reason)462 dri2Flush(struct dri2_screen *psc,
463 __DRIcontext *ctx,
464 struct dri2_drawable *draw,
465 unsigned flags,
466 enum __DRI2throttleReason throttle_reason)
467 {
468 if (ctx && psc->f && psc->f->base.version >= 4) {
469 psc->f->flush_with_flags(ctx, draw->driDrawable, flags, throttle_reason);
470 } else {
471 if (flags & __DRI2_FLUSH_CONTEXT)
472 glFlush();
473
474 if (psc->f)
475 psc->f->flush(draw->driDrawable);
476
477 dri2Throttle(psc, draw, throttle_reason);
478 }
479 }
480
481 static void
__dri2CopySubBuffer(__GLXDRIdrawable * pdraw,int x,int y,int width,int height,enum __DRI2throttleReason reason,Bool flush)482 __dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y,
483 int width, int height,
484 enum __DRI2throttleReason reason, Bool flush)
485 {
486 struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
487 struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
488 XRectangle xrect;
489 XserverRegion region;
490 __DRIcontext *ctx = dri2GetCurrentContext();
491 unsigned flags;
492
493 /* Check we have the right attachments */
494 if (!priv->have_back)
495 return;
496
497 xrect.x = x;
498 xrect.y = priv->height - y - height;
499 xrect.width = width;
500 xrect.height = height;
501
502 flags = __DRI2_FLUSH_DRAWABLE;
503 if (flush)
504 flags |= __DRI2_FLUSH_CONTEXT;
505 dri2Flush(psc, ctx, priv, flags, __DRI2_THROTTLE_COPYSUBBUFFER);
506
507 region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
508 DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
509 DRI2BufferFrontLeft, DRI2BufferBackLeft);
510
511 /* Refresh the fake front (if present) after we just damaged the real
512 * front.
513 */
514 if (priv->have_fake_front)
515 DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
516 DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
517
518 XFixesDestroyRegion(psc->base.dpy, region);
519 }
520
521 static void
dri2CopySubBuffer(__GLXDRIdrawable * pdraw,int x,int y,int width,int height,Bool flush)522 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y,
523 int width, int height, Bool flush)
524 {
525 __dri2CopySubBuffer(pdraw, x, y, width, height,
526 __DRI2_THROTTLE_COPYSUBBUFFER, flush);
527 }
528
529
530 static void
dri2_copy_drawable(struct dri2_drawable * priv,int dest,int src)531 dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
532 {
533 XRectangle xrect;
534 XserverRegion region;
535 struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
536
537 xrect.x = 0;
538 xrect.y = 0;
539 xrect.width = priv->width;
540 xrect.height = priv->height;
541
542 if (psc->f)
543 (*psc->f->flush) (priv->driDrawable);
544
545 region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
546 DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
547 XFixesDestroyRegion(psc->base.dpy, region);
548
549 }
550
551 static void
dri2_wait_x(struct glx_context * gc)552 dri2_wait_x(struct glx_context *gc)
553 {
554 struct dri2_drawable *priv = (struct dri2_drawable *)
555 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
556
557 if (priv == NULL || !priv->have_fake_front)
558 return;
559
560 dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
561 }
562
563 static void
dri2_wait_gl(struct glx_context * gc)564 dri2_wait_gl(struct glx_context *gc)
565 {
566 struct dri2_drawable *priv = (struct dri2_drawable *)
567 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
568
569 if (priv == NULL || !priv->have_fake_front)
570 return;
571
572 dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
573 }
574
575 /**
576 * Called by the driver when it needs to update the real front buffer with the
577 * contents of its fake front buffer.
578 */
579 static void
dri2FlushFrontBuffer(__DRIdrawable * driDrawable,void * loaderPrivate)580 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
581 {
582 struct glx_display *priv;
583 struct glx_context *gc;
584 struct dri2_drawable *pdraw = loaderPrivate;
585 struct dri2_screen *psc;
586
587 if (!pdraw)
588 return;
589
590 if (!pdraw->base.psc)
591 return;
592
593 psc = (struct dri2_screen *) pdraw->base.psc;
594
595 priv = __glXInitialize(psc->base.dpy);
596
597 if (priv == NULL)
598 return;
599
600 gc = __glXGetCurrentContext();
601
602 dri2Throttle(psc, pdraw, __DRI2_THROTTLE_FLUSHFRONT);
603
604 dri2_wait_gl(gc);
605 }
606
607
608 static void
dri2DestroyScreen(struct glx_screen * base)609 dri2DestroyScreen(struct glx_screen *base)
610 {
611 struct dri2_screen *psc = (struct dri2_screen *) base;
612
613 /* Free the direct rendering per screen data */
614 (*psc->core->destroyScreen) (psc->driScreen);
615 driDestroyConfigs(psc->driver_configs);
616 free(psc->driverName);
617 close(psc->fd);
618 free(psc);
619 }
620
621 /**
622 * Process list of buffer received from the server
623 *
624 * Processes the list of buffers received in a reply from the server to either
625 * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
626 */
627 static void
process_buffers(struct dri2_drawable * pdraw,DRI2Buffer * buffers,unsigned count)628 process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
629 unsigned count)
630 {
631 int i;
632
633 pdraw->bufferCount = count;
634 pdraw->have_fake_front = 0;
635 pdraw->have_back = 0;
636
637 /* This assumes the DRI2 buffer attachment tokens matches the
638 * __DRIbuffer tokens. */
639 for (i = 0; i < count; i++) {
640 pdraw->buffers[i].attachment = buffers[i].attachment;
641 pdraw->buffers[i].name = buffers[i].name;
642 pdraw->buffers[i].pitch = buffers[i].pitch;
643 pdraw->buffers[i].cpp = buffers[i].cpp;
644 pdraw->buffers[i].flags = buffers[i].flags;
645 if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
646 pdraw->have_fake_front = 1;
647 if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
648 pdraw->have_back = 1;
649 }
650
651 }
652
dri2GetSwapEventType(Display * dpy,XID drawable)653 unsigned dri2GetSwapEventType(Display* dpy, XID drawable)
654 {
655 struct glx_display *glx_dpy = __glXInitialize(dpy);
656 __GLXDRIdrawable *pdraw;
657 pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
658 if (!pdraw || !(pdraw->eventMask & GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK))
659 return 0;
660 return glx_dpy->codes.first_event + GLX_BufferSwapComplete;
661 }
662
show_fps(struct dri2_drawable * draw)663 static void show_fps(struct dri2_drawable *draw)
664 {
665 const int interval =
666 ((struct dri2_screen *) draw->base.psc)->show_fps_interval;
667 struct timeval tv;
668 uint64_t current_time;
669
670 gettimeofday(&tv, NULL);
671 current_time = (uint64_t)tv.tv_sec*1000000 + (uint64_t)tv.tv_usec;
672
673 draw->frames++;
674
675 if (draw->previous_time + interval * 1000000 <= current_time) {
676 if (draw->previous_time) {
677 fprintf(stderr, "libGL: FPS = %.2f\n",
678 ((uint64_t)draw->frames * 1000000) /
679 (double)(current_time - draw->previous_time));
680 }
681 draw->frames = 0;
682 draw->previous_time = current_time;
683 }
684 }
685
686 static int64_t
dri2XcbSwapBuffers(Display * dpy,__GLXDRIdrawable * pdraw,int64_t target_msc,int64_t divisor,int64_t remainder)687 dri2XcbSwapBuffers(Display *dpy,
688 __GLXDRIdrawable *pdraw,
689 int64_t target_msc,
690 int64_t divisor,
691 int64_t remainder)
692 {
693 xcb_dri2_swap_buffers_cookie_t swap_buffers_cookie;
694 xcb_dri2_swap_buffers_reply_t *swap_buffers_reply;
695 uint32_t target_msc_hi, target_msc_lo;
696 uint32_t divisor_hi, divisor_lo;
697 uint32_t remainder_hi, remainder_lo;
698 int64_t ret = 0;
699 xcb_connection_t *c = XGetXCBConnection(dpy);
700
701 split_counter(target_msc, &target_msc_hi, &target_msc_lo);
702 split_counter(divisor, &divisor_hi, &divisor_lo);
703 split_counter(remainder, &remainder_hi, &remainder_lo);
704
705 swap_buffers_cookie =
706 xcb_dri2_swap_buffers_unchecked(c, pdraw->xDrawable,
707 target_msc_hi, target_msc_lo,
708 divisor_hi, divisor_lo,
709 remainder_hi, remainder_lo);
710
711 /* Immediately wait on the swapbuffers reply. If we didn't, we'd have
712 * to do so some time before reusing a (non-pageflipped) backbuffer.
713 * Otherwise, the new rendering could get ahead of the X Server's
714 * dispatch of the swapbuffer and you'd display garbage.
715 *
716 * We use XSync() first to reap the invalidate events through the event
717 * filter, to ensure that the next drawing doesn't use an invalidated
718 * buffer.
719 */
720 XSync(dpy, False);
721
722 swap_buffers_reply =
723 xcb_dri2_swap_buffers_reply(c, swap_buffers_cookie, NULL);
724 if (swap_buffers_reply) {
725 ret = merge_counter(swap_buffers_reply->swap_hi,
726 swap_buffers_reply->swap_lo);
727 free(swap_buffers_reply);
728 }
729 return ret;
730 }
731
732 static int64_t
dri2SwapBuffers(__GLXDRIdrawable * pdraw,int64_t target_msc,int64_t divisor,int64_t remainder,Bool flush)733 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
734 int64_t remainder, Bool flush)
735 {
736 struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
737 struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
738 int64_t ret = 0;
739
740 /* Check we have the right attachments */
741 if (!priv->have_back)
742 return ret;
743
744 __DRIcontext *ctx = dri2GetCurrentContext();
745 unsigned flags = __DRI2_FLUSH_DRAWABLE;
746 if (flush)
747 flags |= __DRI2_FLUSH_CONTEXT;
748 dri2Flush(psc, ctx, priv, flags, __DRI2_THROTTLE_SWAPBUFFER);
749
750 ret = dri2XcbSwapBuffers(pdraw->psc->dpy, pdraw,
751 target_msc, divisor, remainder);
752
753 if (psc->show_fps_interval) {
754 show_fps(priv);
755 }
756
757 return ret;
758 }
759
760 static __DRIbuffer *
dri2GetBuffers(__DRIdrawable * driDrawable,int * width,int * height,unsigned int * attachments,int count,int * out_count,void * loaderPrivate)761 dri2GetBuffers(__DRIdrawable * driDrawable,
762 int *width, int *height,
763 unsigned int *attachments, int count,
764 int *out_count, void *loaderPrivate)
765 {
766 struct dri2_drawable *pdraw = loaderPrivate;
767 DRI2Buffer *buffers;
768
769 buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
770 width, height, attachments, count, out_count);
771 if (buffers == NULL)
772 return NULL;
773
774 pdraw->width = *width;
775 pdraw->height = *height;
776 process_buffers(pdraw, buffers, *out_count);
777
778 free(buffers);
779
780 return pdraw->buffers;
781 }
782
783 static __DRIbuffer *
dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,int * width,int * height,unsigned int * attachments,int count,int * out_count,void * loaderPrivate)784 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
785 int *width, int *height,
786 unsigned int *attachments, int count,
787 int *out_count, void *loaderPrivate)
788 {
789 struct dri2_drawable *pdraw = loaderPrivate;
790 DRI2Buffer *buffers;
791
792 buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
793 pdraw->base.xDrawable,
794 width, height, attachments,
795 count, out_count);
796 if (buffers == NULL)
797 return NULL;
798
799 pdraw->width = *width;
800 pdraw->height = *height;
801 process_buffers(pdraw, buffers, *out_count);
802
803 free(buffers);
804
805 return pdraw->buffers;
806 }
807
808 static int
dri2SetSwapInterval(__GLXDRIdrawable * pdraw,int interval)809 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
810 {
811 xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
812 struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
813 struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
814
815 if (!dri_valid_swap_interval(psc->driScreen, psc->config, interval))
816 return GLX_BAD_VALUE;
817
818 xcb_dri2_swap_interval(c, priv->base.xDrawable, interval);
819 priv->swap_interval = interval;
820
821 return 0;
822 }
823
824 static int
dri2GetSwapInterval(__GLXDRIdrawable * pdraw)825 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
826 {
827 struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
828
829 return priv->swap_interval;
830 }
831
832 static void
driSetBackgroundContext(void * loaderPrivate)833 driSetBackgroundContext(void *loaderPrivate)
834 {
835 struct dri2_context *pcp = (struct dri2_context *) loaderPrivate;
836 __glXSetCurrentContext(&pcp->base);
837 }
838
839 static GLboolean
driIsThreadSafe(void * loaderPrivate)840 driIsThreadSafe(void *loaderPrivate)
841 {
842 struct dri2_context *pcp = (struct dri2_context *) loaderPrivate;
843 /* Check Xlib is running in thread safe mode
844 *
845 * 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
846 * It wll be NULL if XInitThreads wasn't called.
847 */
848 return pcp->base.psc->dpy->lock_fns != NULL;
849 }
850
851 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
852 .base = { __DRI_DRI2_LOADER, 3 },
853
854 .getBuffers = dri2GetBuffers,
855 .flushFrontBuffer = dri2FlushFrontBuffer,
856 .getBuffersWithFormat = dri2GetBuffersWithFormat,
857 };
858
859 const __DRIuseInvalidateExtension dri2UseInvalidate = {
860 .base = { __DRI_USE_INVALIDATE, 1 }
861 };
862
863 const __DRIbackgroundCallableExtension driBackgroundCallable = {
864 .base = { __DRI_BACKGROUND_CALLABLE, 2 },
865
866 .setBackgroundContext = driSetBackgroundContext,
867 .isThreadSafe = driIsThreadSafe,
868 };
869
870 _X_HIDDEN void
dri2InvalidateBuffers(Display * dpy,XID drawable)871 dri2InvalidateBuffers(Display *dpy, XID drawable)
872 {
873 __GLXDRIdrawable *pdraw =
874 dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
875 struct dri2_screen *psc;
876 struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
877
878 if (!pdraw)
879 return;
880
881 psc = (struct dri2_screen *) pdraw->psc;
882
883 if (psc->f && psc->f->base.version >= 3 && psc->f->invalidate)
884 psc->f->invalidate(pdp->driDrawable);
885 }
886
887 static void
dri2_bind_tex_image(__GLXDRIdrawable * base,int buffer,const int * attrib_list)888 dri2_bind_tex_image(__GLXDRIdrawable *base,
889 int buffer, const int *attrib_list)
890 {
891 struct glx_context *gc = __glXGetCurrentContext();
892 struct dri2_context *pcp = (struct dri2_context *) gc;
893 struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
894 struct dri2_screen *psc;
895
896 if (pdraw != NULL) {
897 psc = (struct dri2_screen *) base->psc;
898
899 if (psc->texBuffer->base.version >= 2 &&
900 psc->texBuffer->setTexBuffer2 != NULL) {
901 (*psc->texBuffer->setTexBuffer2) (pcp->driContext,
902 pdraw->base.textureTarget,
903 pdraw->base.textureFormat,
904 pdraw->driDrawable);
905 }
906 else {
907 (*psc->texBuffer->setTexBuffer) (pcp->driContext,
908 pdraw->base.textureTarget,
909 pdraw->driDrawable);
910 }
911 }
912 }
913
914 static void
dri2_release_tex_image(__GLXDRIdrawable * base,int buffer)915 dri2_release_tex_image(__GLXDRIdrawable *base, int buffer)
916 {
917 struct glx_context *gc = __glXGetCurrentContext();
918 struct dri2_context *pcp = (struct dri2_context *) gc;
919 struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
920 struct dri2_screen *psc;
921
922 if (pdraw != NULL) {
923 psc = (struct dri2_screen *) base->psc;
924
925 if (psc->texBuffer->base.version >= 3 &&
926 psc->texBuffer->releaseTexBuffer != NULL) {
927 (*psc->texBuffer->releaseTexBuffer) (pcp->driContext,
928 pdraw->base.textureTarget,
929 pdraw->driDrawable);
930 }
931 }
932 }
933
934 static const struct glx_context_vtable dri2_context_vtable = {
935 .destroy = dri2_destroy_context,
936 .bind = dri2_bind_context,
937 .unbind = dri2_unbind_context,
938 .wait_gl = dri2_wait_gl,
939 .wait_x = dri2_wait_x,
940 .interop_query_device_info = dri2_interop_query_device_info,
941 .interop_export_object = dri2_interop_export_object
942 };
943
944 static void
dri2BindExtensions(struct dri2_screen * psc,struct glx_display * priv,const char * driverName)945 dri2BindExtensions(struct dri2_screen *psc, struct glx_display * priv,
946 const char *driverName)
947 {
948 const unsigned mask = psc->dri2->getAPIMask(psc->driScreen);
949 const __DRIextension **extensions;
950 int i;
951
952 extensions = psc->core->getExtensions(psc->driScreen);
953
954 __glXEnableDirectExtension(&psc->base, "GLX_EXT_swap_control");
955 __glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
956 __glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
957 __glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
958
959 /*
960 * GLX_INTEL_swap_event is broken on the server side, where it's
961 * currently unconditionally enabled. This completely breaks
962 * systems running on drivers which don't support that extension.
963 * There's no way to test for its presence on this side, so instead
964 * of disabling it unconditionally, just disable it for drivers
965 * which are known to not support it.
966 *
967 * This was fixed in xserver 1.15.0 (190b03215), so now we only
968 * disable the broken driver.
969 */
970 if (strcmp(driverName, "vmwgfx") != 0) {
971 __glXEnableDirectExtension(&psc->base, "GLX_INTEL_swap_event");
972 }
973
974 __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context");
975 __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context_profile");
976 __glXEnableDirectExtension(&psc->base, "GLX_EXT_no_config_context");
977
978 if ((mask & ((1 << __DRI_API_GLES) |
979 (1 << __DRI_API_GLES2) |
980 (1 << __DRI_API_GLES3))) != 0) {
981 __glXEnableDirectExtension(&psc->base,
982 "GLX_EXT_create_context_es_profile");
983 __glXEnableDirectExtension(&psc->base,
984 "GLX_EXT_create_context_es2_profile");
985 }
986
987 for (i = 0; extensions[i]; i++) {
988 if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
989 psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
990 __glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
991 }
992
993 if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
994 psc->f = (__DRI2flushExtension *) extensions[i];
995 /* internal driver extension, no GL extension exposed */
996 }
997
998 if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
999 psc->config = (__DRI2configQueryExtension *) extensions[i];
1000
1001 if (((strcmp(extensions[i]->name, __DRI2_THROTTLE) == 0)))
1002 psc->throttle = (__DRI2throttleExtension *) extensions[i];
1003
1004 if (strcmp(extensions[i]->name, __DRI2_ROBUSTNESS) == 0)
1005 __glXEnableDirectExtension(&psc->base,
1006 "GLX_ARB_create_context_robustness");
1007
1008 if (strcmp(extensions[i]->name, __DRI2_RENDERER_QUERY) == 0) {
1009 psc->rendererQuery = (__DRI2rendererQueryExtension *) extensions[i];
1010 __glXEnableDirectExtension(&psc->base, "GLX_MESA_query_renderer");
1011 unsigned int no_error = 0;
1012 if (psc->rendererQuery->queryInteger(psc->driScreen,
1013 __DRI2_RENDERER_HAS_NO_ERROR_CONTEXT,
1014 &no_error) == 0 && no_error)
1015 __glXEnableDirectExtension(&psc->base,
1016 "GLX_ARB_create_context_no_error");
1017 }
1018
1019 if (strcmp(extensions[i]->name, __DRI2_INTEROP) == 0)
1020 psc->interop = (__DRI2interopExtension*)extensions[i];
1021
1022 if (strcmp(extensions[i]->name, __DRI2_FLUSH_CONTROL) == 0)
1023 __glXEnableDirectExtension(&psc->base,
1024 "GLX_ARB_context_flush_control");
1025 }
1026 }
1027
1028 static char *
dri2_get_driver_name(struct glx_screen * glx_screen)1029 dri2_get_driver_name(struct glx_screen *glx_screen)
1030 {
1031 struct dri2_screen *psc = (struct dri2_screen *)glx_screen;
1032
1033 return psc->driverName;
1034 }
1035
1036 static const struct glx_screen_vtable dri2_screen_vtable = {
1037 .create_context = dri_common_create_context,
1038 .create_context_attribs = dri2_create_context_attribs,
1039 .query_renderer_integer = dri2_query_renderer_integer,
1040 .query_renderer_string = dri2_query_renderer_string,
1041 .get_driver_name = dri2_get_driver_name,
1042 };
1043
1044 static struct glx_screen *
dri2CreateScreen(int screen,struct glx_display * priv)1045 dri2CreateScreen(int screen, struct glx_display * priv)
1046 {
1047 const __DRIconfig **driver_configs;
1048 const __DRIextension **extensions;
1049 const struct dri2_display *const pdp = (struct dri2_display *)
1050 priv->dri2Display;
1051 struct dri2_screen *psc;
1052 __GLXDRIscreen *psp;
1053 struct glx_config *configs = NULL, *visuals = NULL;
1054 char *driverName = NULL, *loader_driverName, *deviceName, *tmp;
1055 drm_magic_t magic;
1056 int i;
1057
1058 psc = calloc(1, sizeof *psc);
1059 if (psc == NULL)
1060 return NULL;
1061
1062 psc->fd = -1;
1063
1064 if (!glx_screen_init(&psc->base, screen, priv)) {
1065 free(psc);
1066 return NULL;
1067 }
1068
1069 if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen),
1070 &driverName, &deviceName)) {
1071 glx_screen_cleanup(&psc->base);
1072 free(psc);
1073 InfoMessageF("screen %d does not appear to be DRI2 capable\n", screen);
1074 return NULL;
1075 }
1076
1077 psc->fd = loader_open_device(deviceName);
1078 if (psc->fd < 0) {
1079 ErrorMessageF("failed to open %s: %s\n", deviceName, strerror(errno));
1080 goto handle_error;
1081 }
1082
1083 if (drmGetMagic(psc->fd, &magic)) {
1084 ErrorMessageF("failed to get magic\n");
1085 goto handle_error;
1086 }
1087
1088 if (!DRI2Authenticate(priv->dpy, RootWindow(priv->dpy, screen), magic)) {
1089 ErrorMessageF("failed to authenticate magic %d\n", magic);
1090 goto handle_error;
1091 }
1092
1093 /* If Mesa knows about the appropriate driver for this fd, then trust it.
1094 * Otherwise, default to the server's value.
1095 */
1096 loader_driverName = loader_get_driver_for_fd(psc->fd);
1097 if (loader_driverName) {
1098 free(driverName);
1099 driverName = loader_driverName;
1100 }
1101 psc->driverName = driverName;
1102
1103 extensions = driOpenDriver(driverName, &psc->driver);
1104 if (extensions == NULL)
1105 goto handle_error;
1106
1107 for (i = 0; extensions[i]; i++) {
1108 if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
1109 psc->core = (__DRIcoreExtension *) extensions[i];
1110 if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
1111 psc->dri2 = (__DRIdri2Extension *) extensions[i];
1112 }
1113
1114 if (psc->core == NULL || psc->dri2 == NULL || psc->dri2->base.version < 3) {
1115 ErrorMessageF("core dri or dri2 extension not found\n");
1116 goto handle_error;
1117 }
1118
1119 if (psc->dri2->base.version >= 4) {
1120 psc->driScreen =
1121 psc->dri2->createNewScreen2(screen, psc->fd,
1122 (const __DRIextension **)
1123 &pdp->loader_extensions[0],
1124 extensions,
1125 &driver_configs, psc);
1126 } else {
1127 psc->driScreen =
1128 psc->dri2->createNewScreen(screen, psc->fd,
1129 (const __DRIextension **)
1130 &pdp->loader_extensions[0],
1131 &driver_configs, psc);
1132 }
1133
1134 if (psc->driScreen == NULL) {
1135 ErrorMessageF("glx: failed to create dri2 screen\n");
1136 goto handle_error;
1137 }
1138
1139 dri2BindExtensions(psc, priv, driverName);
1140
1141 configs = driConvertConfigs(psc->core, psc->base.configs, driver_configs);
1142 visuals = driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
1143
1144 if (!configs || !visuals) {
1145 ErrorMessageF("No matching fbConfigs or visuals found\n");
1146 goto handle_error;
1147 }
1148
1149 glx_config_destroy_list(psc->base.configs);
1150 psc->base.configs = configs;
1151 glx_config_destroy_list(psc->base.visuals);
1152 psc->base.visuals = visuals;
1153
1154 psc->driver_configs = driver_configs;
1155
1156 psc->base.vtable = &dri2_screen_vtable;
1157 psc->base.context_vtable = &dri2_context_vtable;
1158 psp = &psc->vtable;
1159 psc->base.driScreen = psp;
1160 psp->destroyScreen = dri2DestroyScreen;
1161 psp->createDrawable = dri2CreateDrawable;
1162 psp->swapBuffers = dri2SwapBuffers;
1163 psp->getDrawableMSC = NULL;
1164 psp->waitForMSC = NULL;
1165 psp->waitForSBC = NULL;
1166 psp->setSwapInterval = NULL;
1167 psp->getSwapInterval = NULL;
1168 psp->getBufferAge = NULL;
1169 psp->bindTexImage = dri2_bind_tex_image;
1170 psp->releaseTexImage = dri2_release_tex_image;
1171
1172 psp->getDrawableMSC = dri2DrawableGetMSC;
1173 psp->waitForMSC = dri2WaitForMSC;
1174 psp->waitForSBC = dri2WaitForSBC;
1175 psp->setSwapInterval = dri2SetSwapInterval;
1176 psp->getSwapInterval = dri2GetSwapInterval;
1177 psp->maxSwapInterval = INT_MAX;
1178
1179 __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
1180 __glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
1181
1182 if (psc->config->base.version > 1 &&
1183 psc->config->configQuerys(psc->driScreen, "glx_extension_override",
1184 &tmp) == 0)
1185 __glXParseExtensionOverride(&psc->base, tmp);
1186
1187 if (psc->config->base.version > 1 &&
1188 psc->config->configQuerys(psc->driScreen,
1189 "indirect_gl_extension_override",
1190 &tmp) == 0)
1191 __IndirectGlParseExtensionOverride(&psc->base, tmp);
1192
1193 if (psc->config->base.version > 1) {
1194 uint8_t force = false;
1195 if (psc->config->configQueryb(psc->driScreen, "force_direct_glx_context",
1196 &force) == 0) {
1197 psc->base.force_direct_context = force;
1198 }
1199
1200 uint8_t invalid_glx_destroy_window = false;
1201 if (psc->config->configQueryb(psc->driScreen,
1202 "allow_invalid_glx_destroy_window",
1203 &invalid_glx_destroy_window) == 0) {
1204 psc->base.allow_invalid_glx_destroy_window = invalid_glx_destroy_window;
1205 }
1206 }
1207
1208 /* DRI2 supports SubBuffer through DRI2CopyRegion, so it's always
1209 * available.*/
1210 psp->copySubBuffer = dri2CopySubBuffer;
1211 __glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
1212
1213 free(deviceName);
1214
1215 tmp = getenv("LIBGL_SHOW_FPS");
1216 psc->show_fps_interval = (tmp) ? atoi(tmp) : 0;
1217 if (psc->show_fps_interval < 0)
1218 psc->show_fps_interval = 0;
1219
1220 InfoMessageF("Using DRI2 for screen %d\n", screen);
1221
1222 return &psc->base;
1223
1224 handle_error:
1225 CriticalErrorMessageF("failed to load driver: %s\n", driverName);
1226
1227 if (configs)
1228 glx_config_destroy_list(configs);
1229 if (visuals)
1230 glx_config_destroy_list(visuals);
1231 if (psc->driScreen)
1232 psc->core->destroyScreen(psc->driScreen);
1233 psc->driScreen = NULL;
1234 if (psc->fd >= 0)
1235 close(psc->fd);
1236 if (psc->driver)
1237 dlclose(psc->driver);
1238
1239 free(deviceName);
1240 glx_screen_cleanup(&psc->base);
1241 free(psc);
1242
1243 return NULL;
1244 }
1245
1246 /* Called from __glXFreeDisplayPrivate.
1247 */
1248 static void
dri2DestroyDisplay(__GLXDRIdisplay * dpy)1249 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
1250 {
1251 struct dri2_display *pdp = (struct dri2_display *) dpy;
1252
1253 __glxHashDestroy(pdp->dri2Hash);
1254 free(dpy);
1255 }
1256
1257 _X_HIDDEN __GLXDRIdrawable *
dri2GetGlxDrawableFromXDrawableId(Display * dpy,XID id)1258 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
1259 {
1260 struct glx_display *d = __glXInitialize(dpy);
1261 struct dri2_display *pdp = (struct dri2_display *) d->dri2Display;
1262 __GLXDRIdrawable *pdraw;
1263
1264 if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
1265 return pdraw;
1266
1267 return NULL;
1268 }
1269
1270 /*
1271 * Allocate, initialize and return a __DRIdisplayPrivate object.
1272 * This is called from __glXInitialize() when we are given a new
1273 * display pointer.
1274 */
1275 _X_HIDDEN __GLXDRIdisplay *
dri2CreateDisplay(Display * dpy)1276 dri2CreateDisplay(Display * dpy)
1277 {
1278 struct dri2_display *pdp;
1279 int eventBase, errorBase, i;
1280 int driMajor, driMinor;
1281
1282 if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
1283 return NULL;
1284
1285 pdp = malloc(sizeof *pdp);
1286 if (pdp == NULL)
1287 return NULL;
1288
1289 if (!DRI2QueryVersion(dpy, &driMajor, &driMinor) ||
1290 driMinor < 3) {
1291 free(pdp);
1292 return NULL;
1293 }
1294
1295 pdp->base.destroyDisplay = dri2DestroyDisplay;
1296 pdp->base.createScreen = dri2CreateScreen;
1297
1298 i = 0;
1299 pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
1300 pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
1301 pdp->loader_extensions[i++] = &driBackgroundCallable.base;
1302 pdp->loader_extensions[i++] = NULL;
1303
1304 pdp->dri2Hash = __glxHashCreate();
1305 if (pdp->dri2Hash == NULL) {
1306 free(pdp);
1307 return NULL;
1308 }
1309
1310 return &pdp->base;
1311 }
1312
1313 #endif /* GLX_DIRECT_RENDERING */
1314