dri2.c revision f8e939a3a737971ac9d59494a0c433c22b25e628 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.9
4 *
5 * Copyright 2009, VMware, Inc.
6 * All Rights Reserved.
7 * Copyright (C) 2010 LunarG Inc.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 * Authors:
27 *    Keith Whitwell <keithw@vmware.com>
28 *    Jakob Bornecrantz <wallbraker@gmail.com>
29 *    Chia-I Wu <olv@lunarg.com>
30 */
31
32#include "util/u_memory.h"
33#include "util/u_inlines.h"
34#include "util/u_format.h"
35#include "util/u_debug.h"
36#include "state_tracker/drm_driver.h"
37
38#include "dri_screen.h"
39#include "dri_context.h"
40#include "dri_drawable.h"
41#include "dri2_buffer.h"
42
43/**
44 * DRI2 flush extension.
45 */
46static void
47dri2_flush_drawable(__DRIdrawable *draw)
48{
49}
50
51static void
52dri2_invalidate_drawable(__DRIdrawable *dPriv)
53{
54   struct dri_drawable *drawable = dri_drawable(dPriv);
55   struct dri_context *ctx = dri_context(dPriv->driContextPriv);
56
57   dri2InvalidateDrawable(dPriv);
58   drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
59
60   if (ctx)
61      ctx->st->notify_invalid_framebuffer(ctx->st, &drawable->base);
62}
63
64static const __DRI2flushExtension dri2FlushExtension = {
65    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
66    dri2_flush_drawable,
67    dri2_invalidate_drawable,
68};
69
70/**
71 * Retrieve __DRIbuffer from the DRI loader.
72 */
73static __DRIbuffer *
74dri2_drawable_get_buffers(struct dri_drawable *drawable,
75                          const enum st_attachment_type *statts,
76                          unsigned *count)
77{
78   __DRIdrawable *dri_drawable = drawable->dPriv;
79   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
80   boolean with_format;
81   __DRIbuffer *buffers;
82   int num_buffers;
83   unsigned attachments[10];
84   unsigned num_attachments, i;
85
86   assert(loader);
87   with_format = dri_with_format(drawable->sPriv);
88
89   num_attachments = 0;
90
91   /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
92   if (!with_format)
93      attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
94
95   for (i = 0; i < *count; i++) {
96      enum pipe_format format;
97      unsigned bind;
98      int att, bpp;
99
100      dri_drawable_get_format(drawable, statts[i], &format, &bind);
101      if (format == PIPE_FORMAT_NONE)
102         continue;
103
104      switch (statts[i]) {
105      case ST_ATTACHMENT_FRONT_LEFT:
106         /* already added */
107         if (!with_format)
108            continue;
109         att = __DRI_BUFFER_FRONT_LEFT;
110         break;
111      case ST_ATTACHMENT_BACK_LEFT:
112         att = __DRI_BUFFER_BACK_LEFT;
113         break;
114      case ST_ATTACHMENT_FRONT_RIGHT:
115         att = __DRI_BUFFER_FRONT_RIGHT;
116         break;
117      case ST_ATTACHMENT_BACK_RIGHT:
118         att = __DRI_BUFFER_BACK_RIGHT;
119         break;
120      case ST_ATTACHMENT_DEPTH_STENCIL:
121         att = __DRI_BUFFER_DEPTH_STENCIL;
122         break;
123      default:
124         att = -1;
125         break;
126      }
127
128      bpp = util_format_get_blocksizebits(format);
129
130      if (att >= 0) {
131         attachments[num_attachments++] = att;
132         if (with_format) {
133            attachments[num_attachments++] = bpp;
134         }
135      }
136   }
137
138   if (with_format) {
139      num_attachments /= 2;
140      buffers = loader->getBuffersWithFormat(dri_drawable,
141            &dri_drawable->w, &dri_drawable->h,
142            attachments, num_attachments,
143            &num_buffers, dri_drawable->loaderPrivate);
144   }
145   else {
146      buffers = loader->getBuffers(dri_drawable,
147            &dri_drawable->w, &dri_drawable->h,
148            attachments, num_attachments,
149            &num_buffers, dri_drawable->loaderPrivate);
150   }
151
152   if (buffers) {
153      /* set one cliprect to cover the whole dri_drawable */
154      dri_drawable->x = 0;
155      dri_drawable->y = 0;
156      dri_drawable->backX = 0;
157      dri_drawable->backY = 0;
158      dri_drawable->numClipRects = 1;
159      dri_drawable->pClipRects[0].x1 = 0;
160      dri_drawable->pClipRects[0].y1 = 0;
161      dri_drawable->pClipRects[0].x2 = dri_drawable->w;
162      dri_drawable->pClipRects[0].y2 = dri_drawable->h;
163      dri_drawable->numBackClipRects = 1;
164      dri_drawable->pBackClipRects[0].x1 = 0;
165      dri_drawable->pBackClipRects[0].y1 = 0;
166      dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
167      dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
168
169      *count = num_buffers;
170   }
171
172   return buffers;
173}
174
175/**
176 * Process __DRIbuffer and convert them into pipe_resources.
177 */
178static void
179dri2_drawable_process_buffers(struct dri_drawable *drawable,
180                              __DRIbuffer *buffers, unsigned count)
181{
182   struct dri_screen *screen = dri_screen(drawable->sPriv);
183   __DRIdrawable *dri_drawable = drawable->dPriv;
184   struct pipe_resource templ;
185   struct winsys_handle whandle;
186   boolean have_depth = FALSE;
187   unsigned i, bind;
188
189   if (drawable->old_num == count &&
190       drawable->old_w == dri_drawable->w &&
191       drawable->old_h == dri_drawable->h &&
192       memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
193      return;
194
195   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
196      pipe_resource_reference(&drawable->textures[i], NULL);
197
198   memset(&templ, 0, sizeof(templ));
199   templ.target = screen->target;
200   templ.last_level = 0;
201   templ.width0 = dri_drawable->w;
202   templ.height0 = dri_drawable->h;
203   templ.depth0 = 1;
204   templ.array_size = 1;
205
206   memset(&whandle, 0, sizeof(whandle));
207
208   for (i = 0; i < count; i++) {
209      __DRIbuffer *buf = &buffers[i];
210      enum st_attachment_type statt;
211      enum pipe_format format;
212
213      switch (buf->attachment) {
214      case __DRI_BUFFER_FRONT_LEFT:
215         if (!screen->auto_fake_front) {
216            statt = ST_ATTACHMENT_INVALID;
217            break;
218         }
219         /* fallthrough */
220      case __DRI_BUFFER_FAKE_FRONT_LEFT:
221         statt = ST_ATTACHMENT_FRONT_LEFT;
222         break;
223      case __DRI_BUFFER_BACK_LEFT:
224         statt = ST_ATTACHMENT_BACK_LEFT;
225         break;
226      case __DRI_BUFFER_DEPTH:
227      case __DRI_BUFFER_DEPTH_STENCIL:
228      case __DRI_BUFFER_STENCIL:
229         /* use only the first depth/stencil buffer */
230         if (!have_depth) {
231            have_depth = TRUE;
232            statt = ST_ATTACHMENT_DEPTH_STENCIL;
233         }
234         else {
235            statt = ST_ATTACHMENT_INVALID;
236         }
237         break;
238      default:
239         statt = ST_ATTACHMENT_INVALID;
240         break;
241      }
242
243      dri_drawable_get_format(drawable, statt, &format, &bind);
244      if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
245         continue;
246
247      templ.format = format;
248      templ.bind = bind;
249      whandle.handle = buf->name;
250      whandle.stride = buf->pitch;
251
252      drawable->textures[statt] =
253         screen->base.screen->resource_from_handle(screen->base.screen,
254               &templ, &whandle);
255   }
256
257   drawable->old_num = count;
258   drawable->old_w = dri_drawable->w;
259   drawable->old_h = dri_drawable->h;
260   memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
261}
262
263static __DRIbuffer *
264dri2_allocate_buffer(__DRIscreen *sPriv,
265                     unsigned attachment, unsigned format,
266                     int width, int height)
267{
268   struct dri_screen *screen = dri_screen(sPriv);
269   struct dri2_buffer *buffer;
270   struct pipe_resource templ;
271   enum st_attachment_type statt;
272   enum pipe_format pf;
273   unsigned bind;
274   struct winsys_handle whandle;
275
276   switch (attachment) {
277      case __DRI_BUFFER_FRONT_LEFT:
278      case __DRI_BUFFER_FAKE_FRONT_LEFT:
279         statt = ST_ATTACHMENT_FRONT_LEFT;
280         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
281         break;
282      case __DRI_BUFFER_BACK_LEFT:
283         statt = ST_ATTACHMENT_BACK_LEFT;
284         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
285         break;
286      case __DRI_BUFFER_DEPTH:
287      case __DRI_BUFFER_DEPTH_STENCIL:
288      case __DRI_BUFFER_STENCIL:
289            statt = ST_ATTACHMENT_DEPTH_STENCIL;
290            bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
291         break;
292      default:
293         statt = ST_ATTACHMENT_INVALID;
294         break;
295   }
296
297   switch (format) {
298      case 32:
299         pf = PIPE_FORMAT_B8G8R8X8_UNORM;
300         break;
301      case 16:
302         pf = PIPE_FORMAT_Z16_UNORM;
303         break;
304      default:
305         return NULL;
306   }
307
308   buffer = CALLOC_STRUCT(dri2_buffer);
309   if (!buffer)
310      return NULL;
311
312   memset(&templ, 0, sizeof(templ));
313   templ.bind = bind;
314   templ.format = pf;
315   templ.target = PIPE_TEXTURE_2D;
316   templ.last_level = 0;
317   templ.width0 = width;
318   templ.height0 = height;
319   templ.depth0 = 1;
320
321   buffer->resource =
322      screen->base.screen->resource_create(screen->base.screen, &templ);
323   if (!buffer->resource)
324      return NULL;
325
326   memset(&whandle, 0, sizeof(whandle));
327   whandle.type = DRM_API_HANDLE_TYPE_SHARED;
328   screen->base.screen->resource_get_handle(screen->base.screen,
329         buffer->resource, &whandle);
330
331   buffer->base.attachment = attachment;
332   buffer->base.name = whandle.handle;
333   buffer->base.cpp = util_format_get_blocksize(pf);
334   buffer->base.pitch = whandle.stride;
335
336   return &buffer->base;
337}
338
339static void
340dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
341{
342   struct dri2_buffer *buffer = dri2_buffer(bPriv);
343
344   pipe_resource_reference(&buffer->resource, NULL);
345   FREE(buffer);
346}
347
348/*
349 * Backend functions for st_framebuffer interface.
350 */
351
352static void
353dri2_allocate_textures(struct dri_drawable *drawable,
354                       const enum st_attachment_type *statts,
355                       unsigned count)
356{
357   __DRIbuffer *buffers;
358   unsigned num_buffers = count;
359
360   buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
361   if (buffers)
362      dri2_drawable_process_buffers(drawable, buffers, num_buffers);
363}
364
365static void
366dri2_flush_frontbuffer(struct dri_drawable *drawable,
367                       enum st_attachment_type statt)
368{
369   __DRIdrawable *dri_drawable = drawable->dPriv;
370   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
371
372   if (loader->flushFrontBuffer == NULL)
373      return;
374
375   if (statt == ST_ATTACHMENT_FRONT_LEFT) {
376      loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
377   }
378}
379
380static __DRIimage *
381dri2_lookup_egl_image(struct dri_screen *screen, void *handle)
382{
383   __DRIimageLookupExtension *loader = screen->sPriv->dri2.image;
384   __DRIimage *img;
385
386   if (!loader->lookupEGLImage)
387      return NULL;
388
389   img = loader->lookupEGLImage(screen->sPriv,
390				handle, screen->sPriv->loaderPrivate);
391
392   return img;
393}
394
395static __DRIimage *
396dri2_create_image_from_name(__DRIscreen *_screen,
397                            int width, int height, int format,
398                            int name, int pitch, void *loaderPrivate)
399{
400   struct dri_screen *screen = dri_screen(_screen);
401   __DRIimage *img;
402   struct pipe_resource templ;
403   struct winsys_handle whandle;
404   unsigned tex_usage;
405   enum pipe_format pf;
406
407   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
408
409   switch (format) {
410   case __DRI_IMAGE_FORMAT_RGB565:
411      pf = PIPE_FORMAT_B5G6R5_UNORM;
412      break;
413   case __DRI_IMAGE_FORMAT_XRGB8888:
414      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
415      break;
416   case __DRI_IMAGE_FORMAT_ARGB8888:
417      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
418      break;
419   default:
420      pf = PIPE_FORMAT_NONE;
421      break;
422   }
423   if (pf == PIPE_FORMAT_NONE)
424      return NULL;
425
426   img = CALLOC_STRUCT(__DRIimageRec);
427   if (!img)
428      return NULL;
429
430   memset(&templ, 0, sizeof(templ));
431   templ.bind = tex_usage;
432   templ.format = pf;
433   templ.target = screen->target;
434   templ.last_level = 0;
435   templ.width0 = width;
436   templ.height0 = height;
437   templ.depth0 = 1;
438   templ.array_size = 1;
439
440   memset(&whandle, 0, sizeof(whandle));
441   whandle.handle = name;
442   whandle.stride = pitch * util_format_get_blocksize(pf);
443
444   img->texture = screen->base.screen->resource_from_handle(screen->base.screen,
445         &templ, &whandle);
446   if (!img->texture) {
447      FREE(img);
448      return NULL;
449   }
450
451   img->level = 0;
452   img->layer = 0;
453   img->loader_private = loaderPrivate;
454
455   return img;
456}
457
458static __DRIimage *
459dri2_create_image_from_renderbuffer(__DRIcontext *context,
460				    int renderbuffer, void *loaderPrivate)
461{
462   struct dri_context *ctx = dri_context(context->driverPrivate);
463
464   if (!ctx->st->get_resource_for_egl_image)
465      return NULL;
466
467   /* TODO */
468   return NULL;
469}
470
471static __DRIimage *
472dri2_create_image(__DRIscreen *_screen,
473                   int width, int height, int format,
474                   unsigned int use, void *loaderPrivate)
475{
476   struct dri_screen *screen = dri_screen(_screen);
477   __DRIimage *img;
478   struct pipe_resource templ;
479   unsigned tex_usage;
480   enum pipe_format pf;
481
482   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
483
484   switch (format) {
485   case __DRI_IMAGE_FORMAT_RGB565:
486      pf = PIPE_FORMAT_B5G6R5_UNORM;
487      break;
488   case __DRI_IMAGE_FORMAT_XRGB8888:
489      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
490      break;
491   case __DRI_IMAGE_FORMAT_ARGB8888:
492      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
493      break;
494   default:
495      pf = PIPE_FORMAT_NONE;
496      break;
497   }
498   if (pf == PIPE_FORMAT_NONE)
499      return NULL;
500
501   img = CALLOC_STRUCT(__DRIimageRec);
502   if (!img)
503      return NULL;
504
505   memset(&templ, 0, sizeof(templ));
506   templ.bind = tex_usage;
507   templ.format = pf;
508   templ.target = PIPE_TEXTURE_2D;
509   templ.last_level = 0;
510   templ.width0 = width;
511   templ.height0 = height;
512   templ.depth0 = 1;
513
514   img->texture = screen->base.screen->resource_create(screen->base.screen, &templ);
515   if (!img->texture) {
516      FREE(img);
517      return NULL;
518   }
519
520   img->level = 0;
521   img->layer = 0;
522
523   img->loader_private = loaderPrivate;
524   return img;
525}
526
527static GLboolean
528dri2_query_image(__DRIimage *image, int attrib, int *value)
529{
530   struct winsys_handle whandle;
531   memset(&whandle, 0, sizeof(whandle));
532
533   switch (attrib) {
534   case __DRI_IMAGE_ATTRIB_STRIDE:
535      image->texture->screen->resource_get_handle(image->texture->screen,
536            image->texture, &whandle);
537      *value = whandle.stride;
538      return GL_TRUE;
539   case __DRI_IMAGE_ATTRIB_HANDLE:
540      whandle.type = DRM_API_HANDLE_TYPE_KMS;
541      image->texture->screen->resource_get_handle(image->texture->screen,
542         image->texture, &whandle);
543      *value = whandle.handle;
544      return GL_TRUE;
545   case __DRI_IMAGE_ATTRIB_NAME:
546      whandle.type = DRM_API_HANDLE_TYPE_SHARED;
547      image->texture->screen->resource_get_handle(image->texture->screen,
548         image->texture, &whandle);
549      *value = whandle.handle;
550      return GL_TRUE;
551   default:
552      return GL_FALSE;
553   }
554}
555
556static void
557dri2_destroy_image(__DRIimage *img)
558{
559   pipe_resource_reference(&img->texture, NULL);
560   FREE(img);
561}
562
563static struct __DRIimageExtensionRec dri2ImageExtension = {
564    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
565    dri2_create_image_from_name,
566    dri2_create_image_from_renderbuffer,
567    dri2_destroy_image,
568    dri2_create_image,
569    dri2_query_image,
570};
571
572/*
573 * Backend function init_screen.
574 */
575
576static const __DRIextension *dri_screen_extensions[] = {
577   &driReadDrawableExtension,
578   &driCopySubBufferExtension.base,
579   &driSwapControlExtension.base,
580   &driMediaStreamCounterExtension.base,
581   &driTexBufferExtension.base,
582   &dri2FlushExtension.base,
583   &dri2ImageExtension.base,
584   &dri2ConfigQueryExtension.base,
585   NULL
586};
587
588/**
589 * This is the driver specific part of the createNewScreen entry point.
590 *
591 * Returns the struct gl_config supported by this driver.
592 */
593static const __DRIconfig **
594dri2_init_screen(__DRIscreen * sPriv)
595{
596   const __DRIconfig **configs;
597   struct dri_screen *screen;
598   struct pipe_screen *pscreen;
599
600   screen = CALLOC_STRUCT(dri_screen);
601   if (!screen)
602      return NULL;
603
604   screen->sPriv = sPriv;
605   screen->fd = sPriv->fd;
606
607   sPriv->private = (void *)screen;
608   sPriv->extensions = dri_screen_extensions;
609
610   pscreen = driver_descriptor.create_screen(screen->fd);
611   /* dri_init_screen_helper checks pscreen for us */
612
613   configs = dri_init_screen_helper(screen, pscreen, 32);
614   if (!configs)
615      goto fail;
616
617   sPriv->api_mask = 0;
618   if (screen->st_api->profile_mask & ST_PROFILE_DEFAULT_MASK)
619      sPriv->api_mask |= 1 << __DRI_API_OPENGL;
620   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES1_MASK)
621      sPriv->api_mask |= 1 << __DRI_API_GLES;
622   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES2_MASK)
623      sPriv->api_mask |= 1 << __DRI_API_GLES2;
624
625   screen->auto_fake_front = dri_with_format(sPriv);
626   screen->broken_invalidate = !sPriv->dri2.useInvalidate;
627   screen->lookup_egl_image = dri2_lookup_egl_image;
628
629   return configs;
630fail:
631   dri_destroy_screen_helper(screen);
632   FREE(screen);
633   return NULL;
634}
635
636static boolean
637dri2_create_context(gl_api api, const struct gl_config * visual,
638                    __DRIcontext * cPriv, void *sharedContextPrivate)
639{
640   struct dri_context *ctx = NULL;
641
642   if (!dri_create_context(api, visual, cPriv, sharedContextPrivate))
643      return FALSE;
644
645   ctx = cPriv->driverPrivate;
646
647   return TRUE;
648}
649
650static boolean
651dri2_create_buffer(__DRIscreen * sPriv,
652                   __DRIdrawable * dPriv,
653                   const struct gl_config * visual, boolean isPixmap)
654{
655   struct dri_drawable *drawable = NULL;
656
657   if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
658      return FALSE;
659
660   drawable = dPriv->driverPrivate;
661
662   drawable->allocate_textures = dri2_allocate_textures;
663   drawable->flush_frontbuffer = dri2_flush_frontbuffer;
664
665   return TRUE;
666}
667
668/**
669 * DRI driver virtual function table.
670 *
671 * DRI versions differ in their implementation of init_screen and swap_buffers.
672 */
673const struct __DriverAPIRec driDriverAPI = {
674   .InitScreen = NULL,
675   .InitScreen2 = dri2_init_screen,
676   .DestroyScreen = dri_destroy_screen,
677   .CreateContext = dri2_create_context,
678   .DestroyContext = dri_destroy_context,
679   .CreateBuffer = dri2_create_buffer,
680   .DestroyBuffer = dri_destroy_buffer,
681   .MakeCurrent = dri_make_current,
682   .UnbindContext = dri_unbind_context,
683
684   .GetSwapInfo = NULL,
685   .GetDrawableMSC = NULL,
686   .WaitForMSC = NULL,
687
688   .SwapBuffers = NULL,
689   .CopySubBuffer = NULL,
690
691   .AllocateBuffer = dri2_allocate_buffer,
692   .ReleaseBuffer  = dri2_release_buffer,
693};
694
695/* This is the table of extensions that the loader will dlsym() for. */
696PUBLIC const __DRIextension *__driDriverExtensions[] = {
697    &driCoreExtension.base,
698    &driLegacyExtension.base,
699    &driDRI2Extension.base,
700    NULL
701};
702
703/* vim: set sw=3 ts=8 sts=3 expandtab: */
704