1 /**************************************************************************
2 *
3 * Copyright 2009, VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27 /*
28 * Author: Keith Whitwell <keithw@vmware.com>
29 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
30 */
31
32 #include "dri_screen.h"
33 #include "dri_context.h"
34 #include "dri_drawable.h"
35
36 #include "pipe/p_screen.h"
37 #include "util/format/u_format.h"
38 #include "util/u_memory.h"
39 #include "util/u_inlines.h"
40
41 static uint32_t drifb_ID = 0;
42
43 static bool
dri_st_framebuffer_validate(struct st_context_iface * stctx,struct st_framebuffer_iface * stfbi,const enum st_attachment_type * statts,unsigned count,struct pipe_resource ** out)44 dri_st_framebuffer_validate(struct st_context_iface *stctx,
45 struct st_framebuffer_iface *stfbi,
46 const enum st_attachment_type *statts,
47 unsigned count,
48 struct pipe_resource **out)
49 {
50 struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
51 struct dri_drawable *drawable =
52 (struct dri_drawable *) stfbi->st_manager_private;
53 struct dri_screen *screen = dri_screen(drawable->sPriv);
54 unsigned statt_mask, new_mask;
55 bool new_stamp;
56 int i;
57 unsigned int lastStamp;
58 struct pipe_resource **textures =
59 drawable->stvis.samples > 1 ? drawable->msaa_textures
60 : drawable->textures;
61
62 statt_mask = 0x0;
63 for (i = 0; i < count; i++)
64 statt_mask |= (1 << statts[i]);
65
66 /* record newly allocated textures */
67 new_mask = (statt_mask & ~drawable->texture_mask);
68
69 /*
70 * dPriv->dri2.stamp is the server stamp. dPriv->lastStamp is the
71 * client stamp. It has the value of the server stamp when last
72 * checked.
73 */
74 do {
75 lastStamp = drawable->dPriv->lastStamp;
76 new_stamp = (drawable->texture_stamp != lastStamp);
77
78 if (new_stamp || new_mask || screen->broken_invalidate) {
79 if (new_stamp && drawable->update_drawable_info)
80 drawable->update_drawable_info(drawable);
81
82 drawable->allocate_textures(ctx, drawable, statts, count);
83
84 /* add existing textures */
85 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
86 if (textures[i])
87 statt_mask |= (1 << i);
88 }
89
90 drawable->texture_stamp = lastStamp;
91 drawable->texture_mask = statt_mask;
92 }
93 } while (lastStamp != drawable->dPriv->lastStamp);
94
95 /* Flush the pending set_damage_region request. */
96 struct pipe_screen *pscreen = screen->base.screen;
97
98 if (new_mask & (1 << ST_ATTACHMENT_BACK_LEFT) &&
99 pscreen->set_damage_region) {
100 struct pipe_resource *resource = textures[ST_ATTACHMENT_BACK_LEFT];
101
102 pscreen->set_damage_region(pscreen, resource,
103 drawable->num_damage_rects,
104 drawable->damage_rects);
105 }
106
107 if (!out)
108 return true;
109
110 /* Set the window-system buffers for the gallium frontend. */
111 for (i = 0; i < count; i++)
112 pipe_resource_reference(&out[i], textures[statts[i]]);
113
114 return true;
115 }
116
117 static bool
dri_st_framebuffer_flush_front(struct st_context_iface * stctx,struct st_framebuffer_iface * stfbi,enum st_attachment_type statt)118 dri_st_framebuffer_flush_front(struct st_context_iface *stctx,
119 struct st_framebuffer_iface *stfbi,
120 enum st_attachment_type statt)
121 {
122 struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
123 struct dri_drawable *drawable =
124 (struct dri_drawable *) stfbi->st_manager_private;
125
126 /* XXX remove this and just set the correct one on the framebuffer */
127 drawable->flush_frontbuffer(ctx, drawable, statt);
128
129 return true;
130 }
131
132 /**
133 * The gallium frontend framebuffer interface flush_swapbuffers callback
134 */
135 static bool
dri_st_framebuffer_flush_swapbuffers(struct st_context_iface * stctx,struct st_framebuffer_iface * stfbi)136 dri_st_framebuffer_flush_swapbuffers(struct st_context_iface *stctx,
137 struct st_framebuffer_iface *stfbi)
138 {
139 struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
140 struct dri_drawable *drawable =
141 (struct dri_drawable *) stfbi->st_manager_private;
142
143 if (drawable->flush_swapbuffers)
144 drawable->flush_swapbuffers(ctx, drawable);
145
146 return true;
147 }
148
149 /**
150 * This is called when we need to set up GL rendering to a new X window.
151 */
152 bool
dri_create_buffer(__DRIscreen * sPriv,__DRIdrawable * dPriv,const struct gl_config * visual,bool isPixmap)153 dri_create_buffer(__DRIscreen * sPriv,
154 __DRIdrawable * dPriv,
155 const struct gl_config * visual, bool isPixmap)
156 {
157 struct dri_screen *screen = sPriv->driverPrivate;
158 struct dri_drawable *drawable = NULL;
159
160 if (isPixmap)
161 goto fail; /* not implemented */
162
163 drawable = CALLOC_STRUCT(dri_drawable);
164 if (drawable == NULL)
165 goto fail;
166
167 dri_fill_st_visual(&drawable->stvis, screen, visual);
168
169 /* setup the st_framebuffer_iface */
170 drawable->base.visual = &drawable->stvis;
171 drawable->base.flush_front = dri_st_framebuffer_flush_front;
172 drawable->base.validate = dri_st_framebuffer_validate;
173 drawable->base.flush_swapbuffers = dri_st_framebuffer_flush_swapbuffers;
174 drawable->base.st_manager_private = (void *) drawable;
175
176 drawable->screen = screen;
177 drawable->sPriv = sPriv;
178 drawable->dPriv = dPriv;
179
180 dPriv->driverPrivate = (void *)drawable;
181 p_atomic_set(&drawable->base.stamp, 1);
182 drawable->base.ID = p_atomic_inc_return(&drifb_ID);
183 drawable->base.state_manager = &screen->base;
184
185 return true;
186 fail:
187 FREE(drawable);
188 return false;
189 }
190
191 void
dri_destroy_buffer(__DRIdrawable * dPriv)192 dri_destroy_buffer(__DRIdrawable * dPriv)
193 {
194 struct dri_drawable *drawable = dri_drawable(dPriv);
195 struct dri_screen *screen = drawable->screen;
196 struct st_api *stapi = screen->st_api;
197 int i;
198
199 pipe_surface_reference(&drawable->drisw_surface, NULL);
200
201 for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
202 pipe_resource_reference(&drawable->textures[i], NULL);
203 for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
204 pipe_resource_reference(&drawable->msaa_textures[i], NULL);
205
206 screen->base.screen->fence_reference(screen->base.screen,
207 &drawable->throttle_fence, NULL);
208
209 /* Notify the st manager that this drawable is no longer valid */
210 stapi->destroy_drawable(stapi, &drawable->base);
211
212 FREE(drawable->damage_rects);
213 FREE(drawable);
214 }
215
216 /**
217 * Validate the texture at an attachment. Allocate the texture if it does not
218 * exist. Used by the TFP extension.
219 */
220 static void
dri_drawable_validate_att(struct dri_context * ctx,struct dri_drawable * drawable,enum st_attachment_type statt)221 dri_drawable_validate_att(struct dri_context *ctx,
222 struct dri_drawable *drawable,
223 enum st_attachment_type statt)
224 {
225 enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
226 unsigned i, count = 0;
227
228 /* check if buffer already exists */
229 if (drawable->texture_mask & (1 << statt))
230 return;
231
232 /* make sure DRI2 does not destroy existing buffers */
233 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
234 if (drawable->texture_mask & (1 << i)) {
235 statts[count++] = i;
236 }
237 }
238 statts[count++] = statt;
239
240 drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
241
242 drawable->base.validate(ctx->st, &drawable->base, statts, count, NULL);
243 }
244
245 /**
246 * These are used for GLX_EXT_texture_from_pixmap
247 */
248 static void
dri_set_tex_buffer2(__DRIcontext * pDRICtx,GLint target,GLint format,__DRIdrawable * dPriv)249 dri_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
250 GLint format, __DRIdrawable *dPriv)
251 {
252 struct dri_context *ctx = dri_context(pDRICtx);
253 struct st_context_iface *st = ctx->st;
254 struct dri_drawable *drawable = dri_drawable(dPriv);
255 struct pipe_resource *pt;
256
257 if (st->thread_finish)
258 st->thread_finish(st);
259
260 dri_drawable_validate_att(ctx, drawable, ST_ATTACHMENT_FRONT_LEFT);
261
262 /* Use the pipe resource associated with the X drawable */
263 pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
264
265 if (pt) {
266 enum pipe_format internal_format = pt->format;
267
268 if (format == __DRI_TEXTURE_FORMAT_RGB) {
269 /* only need to cover the formats recognized by dri_fill_st_visual */
270 switch (internal_format) {
271 case PIPE_FORMAT_R16G16B16A16_FLOAT:
272 internal_format = PIPE_FORMAT_R16G16B16X16_FLOAT;
273 break;
274 case PIPE_FORMAT_B10G10R10A2_UNORM:
275 internal_format = PIPE_FORMAT_B10G10R10X2_UNORM;
276 break;
277 case PIPE_FORMAT_R10G10B10A2_UNORM:
278 internal_format = PIPE_FORMAT_R10G10B10X2_UNORM;
279 break;
280 case PIPE_FORMAT_BGRA8888_UNORM:
281 internal_format = PIPE_FORMAT_BGRX8888_UNORM;
282 break;
283 case PIPE_FORMAT_ARGB8888_UNORM:
284 internal_format = PIPE_FORMAT_XRGB8888_UNORM;
285 break;
286 default:
287 break;
288 }
289 }
290
291 drawable->update_tex_buffer(drawable, ctx, pt);
292
293 ctx->st->teximage(ctx->st,
294 (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
295 0, internal_format, pt, false);
296 }
297 }
298
299 static void
dri_set_tex_buffer(__DRIcontext * pDRICtx,GLint target,__DRIdrawable * dPriv)300 dri_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
301 __DRIdrawable *dPriv)
302 {
303 dri_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
304 }
305
306 const __DRItexBufferExtension driTexBufferExtension = {
307 .base = { __DRI_TEX_BUFFER, 2 },
308
309 .setTexBuffer = dri_set_tex_buffer,
310 .setTexBuffer2 = dri_set_tex_buffer2,
311 .releaseTexBuffer = NULL,
312 };
313
314 /**
315 * Get the format and binding of an attachment.
316 */
317 void
dri_drawable_get_format(struct dri_drawable * drawable,enum st_attachment_type statt,enum pipe_format * format,unsigned * bind)318 dri_drawable_get_format(struct dri_drawable *drawable,
319 enum st_attachment_type statt,
320 enum pipe_format *format,
321 unsigned *bind)
322 {
323 switch (statt) {
324 case ST_ATTACHMENT_FRONT_LEFT:
325 case ST_ATTACHMENT_BACK_LEFT:
326 case ST_ATTACHMENT_FRONT_RIGHT:
327 case ST_ATTACHMENT_BACK_RIGHT:
328 /* Other pieces of the driver stack get confused and behave incorrectly
329 * when they get an sRGB drawable. st/mesa receives "drawable->stvis"
330 * though other means and handles it correctly, so we don't really need
331 * to use an sRGB format here.
332 */
333 *format = util_format_linear(drawable->stvis.color_format);
334 *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
335 break;
336 case ST_ATTACHMENT_DEPTH_STENCIL:
337 *format = drawable->stvis.depth_stencil_format;
338 *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
339 break;
340 default:
341 *format = PIPE_FORMAT_NONE;
342 *bind = 0;
343 break;
344 }
345 }
346
347 void
dri_pipe_blit(struct pipe_context * pipe,struct pipe_resource * dst,struct pipe_resource * src)348 dri_pipe_blit(struct pipe_context *pipe,
349 struct pipe_resource *dst,
350 struct pipe_resource *src)
351 {
352 struct pipe_blit_info blit;
353
354 if (!dst || !src)
355 return;
356
357 /* From the GL spec, version 4.2, section 4.1.11 (Additional Multisample
358 * Fragment Operations):
359 *
360 * If a framebuffer object is not bound, after all operations have
361 * been completed on the multisample buffer, the sample values for
362 * each color in the multisample buffer are combined to produce a
363 * single color value, and that value is written into the
364 * corresponding color buffers selected by DrawBuffer or
365 * DrawBuffers. An implementation may defer the writing of the color
366 * buffers until a later time, but the state of the framebuffer must
367 * behave as if the color buffers were updated as each fragment was
368 * processed. The method of combination is not specified. If the
369 * framebuffer contains sRGB values, then it is recommended that the
370 * an average of sample values is computed in a linearized space, as
371 * for blending (see section 4.1.7).
372 *
373 * In other words, to do a resolve operation in a linear space, we have
374 * to set sRGB formats if the original resources were sRGB, so don't use
375 * util_format_linear.
376 */
377
378 memset(&blit, 0, sizeof(blit));
379 blit.dst.resource = dst;
380 blit.dst.box.width = dst->width0;
381 blit.dst.box.height = dst->height0;
382 blit.dst.box.depth = 1;
383 blit.dst.format = dst->format;
384 blit.src.resource = src;
385 blit.src.box.width = src->width0;
386 blit.src.box.height = src->height0;
387 blit.src.box.depth = 1;
388 blit.src.format = src->format;
389 blit.mask = PIPE_MASK_RGBA;
390 blit.filter = PIPE_TEX_FILTER_NEAREST;
391
392 pipe->blit(pipe, &blit);
393 }
394
395 static void
dri_postprocessing(struct dri_context * ctx,struct dri_drawable * drawable,enum st_attachment_type att)396 dri_postprocessing(struct dri_context *ctx,
397 struct dri_drawable *drawable,
398 enum st_attachment_type att)
399 {
400 struct pipe_resource *src = drawable->textures[att];
401 struct pipe_resource *zsbuf = drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL];
402
403 if (ctx->pp && src)
404 pp_run(ctx->pp, src, src, zsbuf);
405 }
406
407 struct notify_before_flush_cb_args {
408 struct dri_context *ctx;
409 struct dri_drawable *drawable;
410 unsigned flags;
411 enum __DRI2throttleReason reason;
412 bool swap_msaa_buffers;
413 };
414
415 static void
notify_before_flush_cb(void * _args)416 notify_before_flush_cb(void* _args)
417 {
418 struct notify_before_flush_cb_args *args = (struct notify_before_flush_cb_args *) _args;
419 struct st_context_iface *st = args->ctx->st;
420 struct pipe_context *pipe = st->pipe;
421
422 if (args->drawable->stvis.samples > 1 &&
423 (args->reason == __DRI2_THROTTLE_SWAPBUFFER ||
424 args->reason == __DRI2_THROTTLE_COPYSUBBUFFER)) {
425 /* Resolve the MSAA back buffer. */
426 dri_pipe_blit(st->pipe,
427 args->drawable->textures[ST_ATTACHMENT_BACK_LEFT],
428 args->drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT]);
429
430 if (args->reason == __DRI2_THROTTLE_SWAPBUFFER &&
431 args->drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT] &&
432 args->drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT]) {
433 args->swap_msaa_buffers = true;
434 }
435
436 /* FRONT_LEFT is resolved in drawable->flush_frontbuffer. */
437 }
438
439 dri_postprocessing(args->ctx, args->drawable, ST_ATTACHMENT_BACK_LEFT);
440
441 if (pipe->invalidate_resource &&
442 (args->flags & __DRI2_FLUSH_INVALIDATE_ANCILLARY)) {
443 if (args->drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL])
444 pipe->invalidate_resource(pipe, args->drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
445 if (args->drawable->msaa_textures[ST_ATTACHMENT_DEPTH_STENCIL])
446 pipe->invalidate_resource(pipe, args->drawable->msaa_textures[ST_ATTACHMENT_DEPTH_STENCIL]);
447 }
448
449 if (args->ctx->hud) {
450 hud_run(args->ctx->hud, args->ctx->st->cso_context,
451 args->drawable->textures[ST_ATTACHMENT_BACK_LEFT]);
452 }
453
454 pipe->flush_resource(pipe, args->drawable->textures[ST_ATTACHMENT_BACK_LEFT]);
455 }
456
457 /**
458 * DRI2 flush extension, the flush_with_flags function.
459 *
460 * \param context the context
461 * \param drawable the drawable to flush
462 * \param flags a combination of _DRI2_FLUSH_xxx flags
463 * \param throttle_reason the reason for throttling, 0 = no throttling
464 */
465 void
dri_flush(__DRIcontext * cPriv,__DRIdrawable * dPriv,unsigned flags,enum __DRI2throttleReason reason)466 dri_flush(__DRIcontext *cPriv,
467 __DRIdrawable *dPriv,
468 unsigned flags,
469 enum __DRI2throttleReason reason)
470 {
471 struct dri_context *ctx = dri_context(cPriv);
472 struct dri_drawable *drawable = dri_drawable(dPriv);
473 struct st_context_iface *st;
474 unsigned flush_flags;
475 struct notify_before_flush_cb_args args = { 0 };
476
477 if (!ctx) {
478 assert(0);
479 return;
480 }
481
482 st = ctx->st;
483 if (st->thread_finish)
484 st->thread_finish(st);
485
486 if (drawable) {
487 /* prevent recursion */
488 if (drawable->flushing)
489 return;
490
491 drawable->flushing = true;
492 }
493 else {
494 flags &= ~__DRI2_FLUSH_DRAWABLE;
495 }
496
497 if ((flags & __DRI2_FLUSH_DRAWABLE) &&
498 drawable->textures[ST_ATTACHMENT_BACK_LEFT]) {
499 /* We can't do operations on the back buffer here, because there
500 * may be some pending operations that will get flushed by the
501 * call to st->flush (eg: FLUSH_VERTICES).
502 * Instead we register a callback to be notified when all operations
503 * have been submitted but before the call to st_flush.
504 */
505 args.ctx = ctx;
506 args.drawable = drawable;
507 args.flags = flags;
508 args.reason = reason;
509 }
510
511 flush_flags = 0;
512 if (flags & __DRI2_FLUSH_CONTEXT)
513 flush_flags |= ST_FLUSH_FRONT;
514 if (reason == __DRI2_THROTTLE_SWAPBUFFER)
515 flush_flags |= ST_FLUSH_END_OF_FRAME;
516
517 /* Flush the context and throttle if needed. */
518 if (dri_screen(ctx->sPriv)->throttle &&
519 drawable &&
520 (reason == __DRI2_THROTTLE_SWAPBUFFER ||
521 reason == __DRI2_THROTTLE_FLUSHFRONT)) {
522
523 struct pipe_screen *screen = drawable->screen->base.screen;
524 struct pipe_fence_handle *new_fence = NULL;
525
526 st->flush(st, flush_flags, &new_fence, args.ctx ? notify_before_flush_cb : NULL, &args);
527
528 /* throttle on the previous fence */
529 if (drawable->throttle_fence) {
530 screen->fence_finish(screen, NULL, drawable->throttle_fence, PIPE_TIMEOUT_INFINITE);
531 screen->fence_reference(screen, &drawable->throttle_fence, NULL);
532 }
533 drawable->throttle_fence = new_fence;
534 }
535 else if (flags & (__DRI2_FLUSH_DRAWABLE | __DRI2_FLUSH_CONTEXT)) {
536 st->flush(st, flush_flags, NULL, args.ctx ? notify_before_flush_cb : NULL, &args);
537 }
538
539 if (drawable) {
540 drawable->flushing = false;
541 }
542
543 /* Swap the MSAA front and back buffers, so that reading
544 * from the front buffer after SwapBuffers returns what was
545 * in the back buffer.
546 */
547 if (args.swap_msaa_buffers) {
548 struct pipe_resource *tmp =
549 drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT];
550
551 drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT] =
552 drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT];
553 drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT] = tmp;
554
555 /* Now that we have swapped the buffers, this tells the gallium
556 * frontend to revalidate the framebuffer.
557 */
558 p_atomic_inc(&drawable->base.stamp);
559 }
560 }
561
562 /**
563 * dri_throttle - A DRI2ThrottleExtension throttling function.
564 */
565 static void
dri_throttle(__DRIcontext * cPriv,__DRIdrawable * dPriv,enum __DRI2throttleReason reason)566 dri_throttle(__DRIcontext *cPriv, __DRIdrawable *dPriv,
567 enum __DRI2throttleReason reason)
568 {
569 dri_flush(cPriv, dPriv, 0, reason);
570 }
571
572
573 const __DRI2throttleExtension dri2ThrottleExtension = {
574 .base = { __DRI2_THROTTLE, 1 },
575
576 .throttle = dri_throttle,
577 };
578
579
580 /* vim: set sw=3 ts=8 sts=3 expandtab: */
581