dri2.c revision 00978098794f723230a33cab1c1152686f1c4fa5 
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 *dPriv)
48{
49   struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
50   struct dri_drawable *drawable = dri_drawable(dPriv);
51
52   struct pipe_resource *ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
53
54   if (ctx) {
55      if (ptex && ctx->pp && drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL])
56         pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
57
58      ctx->st->flush(ctx->st, 0, NULL);
59   }
60}
61
62static void
63dri2_invalidate_drawable(__DRIdrawable *dPriv)
64{
65   struct dri_drawable *drawable = dri_drawable(dPriv);
66
67   dri2InvalidateDrawable(dPriv);
68   drawable->dPriv->lastStamp = drawable->dPriv->dri2.stamp;
69
70   p_atomic_inc(&drawable->base.stamp);
71}
72
73static const __DRI2flushExtension dri2FlushExtension = {
74    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
75    dri2_flush_drawable,
76    dri2_invalidate_drawable,
77};
78
79/**
80 * Retrieve __DRIbuffer from the DRI loader.
81 */
82static __DRIbuffer *
83dri2_drawable_get_buffers(struct dri_drawable *drawable,
84                          const enum st_attachment_type *statts,
85                          unsigned *count)
86{
87   __DRIdrawable *dri_drawable = drawable->dPriv;
88   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
89   boolean with_format;
90   __DRIbuffer *buffers;
91   int num_buffers;
92   unsigned attachments[10];
93   unsigned num_attachments, i;
94
95   assert(loader);
96   with_format = dri_with_format(drawable->sPriv);
97
98   num_attachments = 0;
99
100   /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
101   if (!with_format)
102      attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
103
104   for (i = 0; i < *count; i++) {
105      enum pipe_format format;
106      unsigned bind;
107      int att, depth;
108
109      dri_drawable_get_format(drawable, statts[i], &format, &bind);
110      if (format == PIPE_FORMAT_NONE)
111         continue;
112
113      switch (statts[i]) {
114      case ST_ATTACHMENT_FRONT_LEFT:
115         /* already added */
116         if (!with_format)
117            continue;
118         att = __DRI_BUFFER_FRONT_LEFT;
119         break;
120      case ST_ATTACHMENT_BACK_LEFT:
121         att = __DRI_BUFFER_BACK_LEFT;
122         break;
123      case ST_ATTACHMENT_FRONT_RIGHT:
124         att = __DRI_BUFFER_FRONT_RIGHT;
125         break;
126      case ST_ATTACHMENT_BACK_RIGHT:
127         att = __DRI_BUFFER_BACK_RIGHT;
128         break;
129      case ST_ATTACHMENT_DEPTH_STENCIL:
130         att = __DRI_BUFFER_DEPTH_STENCIL;
131         break;
132      default:
133         att = -1;
134         break;
135      }
136
137      /*
138       * In this switch statement we must support all formats that
139       * may occur as the stvis->color_format or
140       * stvis->depth_stencil_format.
141       */
142      switch(format) {
143      case PIPE_FORMAT_B8G8R8A8_UNORM:
144	 depth = 32;
145	 break;
146      case PIPE_FORMAT_B8G8R8X8_UNORM:
147	 depth = 24;
148	 break;
149      case PIPE_FORMAT_B5G6R5_UNORM:
150	 depth = 16;
151	 break;
152      case PIPE_FORMAT_Z16_UNORM:
153	 att = __DRI_BUFFER_DEPTH;
154	 depth = 16;
155	 break;
156      case PIPE_FORMAT_Z24X8_UNORM:
157      case PIPE_FORMAT_X8Z24_UNORM:
158	 att = __DRI_BUFFER_DEPTH;
159	 depth = 24;
160	 break;
161      case PIPE_FORMAT_Z24_UNORM_S8_UINT:
162      case PIPE_FORMAT_S8_UINT_Z24_UNORM:
163	 depth = 32;
164	 break;
165      case PIPE_FORMAT_Z32_UNORM:
166	 att = __DRI_BUFFER_DEPTH;
167	 depth = 32;
168	 break;
169      default:
170	 depth = util_format_get_blocksizebits(format);
171	 assert(!"Unexpected format in dri2_drawable_get_buffers()");
172      }
173
174      if (att >= 0) {
175         attachments[num_attachments++] = att;
176         if (with_format) {
177            attachments[num_attachments++] = depth;
178         }
179      }
180   }
181
182   if (with_format) {
183      num_attachments /= 2;
184      buffers = loader->getBuffersWithFormat(dri_drawable,
185            &dri_drawable->w, &dri_drawable->h,
186            attachments, num_attachments,
187            &num_buffers, dri_drawable->loaderPrivate);
188   }
189   else {
190      buffers = loader->getBuffers(dri_drawable,
191            &dri_drawable->w, &dri_drawable->h,
192            attachments, num_attachments,
193            &num_buffers, dri_drawable->loaderPrivate);
194   }
195
196   if (buffers)
197      *count = num_buffers;
198
199   return buffers;
200}
201
202/**
203 * Process __DRIbuffer and convert them into pipe_resources.
204 */
205static void
206dri2_drawable_process_buffers(struct dri_drawable *drawable,
207                              __DRIbuffer *buffers, unsigned count)
208{
209   struct dri_screen *screen = dri_screen(drawable->sPriv);
210   __DRIdrawable *dri_drawable = drawable->dPriv;
211   struct pipe_resource templ;
212   struct winsys_handle whandle;
213   boolean have_depth = FALSE;
214   unsigned i, bind;
215
216   if (drawable->old_num == count &&
217       drawable->old_w == dri_drawable->w &&
218       drawable->old_h == dri_drawable->h &&
219       memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
220      return;
221
222   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
223      pipe_resource_reference(&drawable->textures[i], NULL);
224
225   memset(&templ, 0, sizeof(templ));
226   templ.target = screen->target;
227   templ.last_level = 0;
228   templ.width0 = dri_drawable->w;
229   templ.height0 = dri_drawable->h;
230   templ.depth0 = 1;
231   templ.array_size = 1;
232
233   memset(&whandle, 0, sizeof(whandle));
234
235   for (i = 0; i < count; i++) {
236      __DRIbuffer *buf = &buffers[i];
237      enum st_attachment_type statt;
238      enum pipe_format format;
239
240      switch (buf->attachment) {
241      case __DRI_BUFFER_FRONT_LEFT:
242         if (!screen->auto_fake_front) {
243            statt = ST_ATTACHMENT_INVALID;
244            break;
245         }
246         /* fallthrough */
247      case __DRI_BUFFER_FAKE_FRONT_LEFT:
248         statt = ST_ATTACHMENT_FRONT_LEFT;
249         break;
250      case __DRI_BUFFER_BACK_LEFT:
251         statt = ST_ATTACHMENT_BACK_LEFT;
252         break;
253      case __DRI_BUFFER_DEPTH:
254      case __DRI_BUFFER_DEPTH_STENCIL:
255      case __DRI_BUFFER_STENCIL:
256         /* use only the first depth/stencil buffer */
257         if (!have_depth) {
258            have_depth = TRUE;
259            statt = ST_ATTACHMENT_DEPTH_STENCIL;
260         }
261         else {
262            statt = ST_ATTACHMENT_INVALID;
263         }
264         break;
265      default:
266         statt = ST_ATTACHMENT_INVALID;
267         break;
268      }
269
270      dri_drawable_get_format(drawable, statt, &format, &bind);
271      if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
272         continue;
273
274      templ.format = format;
275      templ.bind = bind;
276      whandle.handle = buf->name;
277      whandle.stride = buf->pitch;
278
279      drawable->textures[statt] =
280         screen->base.screen->resource_from_handle(screen->base.screen,
281               &templ, &whandle);
282   }
283
284   drawable->old_num = count;
285   drawable->old_w = dri_drawable->w;
286   drawable->old_h = dri_drawable->h;
287   memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
288}
289
290static __DRIbuffer *
291dri2_allocate_buffer(__DRIscreen *sPriv,
292                     unsigned attachment, unsigned format,
293                     int width, int height)
294{
295   struct dri_screen *screen = dri_screen(sPriv);
296   struct dri2_buffer *buffer;
297   struct pipe_resource templ;
298   enum pipe_format pf;
299   unsigned bind = 0;
300   struct winsys_handle whandle;
301
302   switch (attachment) {
303      case __DRI_BUFFER_FRONT_LEFT:
304      case __DRI_BUFFER_FAKE_FRONT_LEFT:
305         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
306         break;
307      case __DRI_BUFFER_BACK_LEFT:
308         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
309         break;
310      case __DRI_BUFFER_DEPTH:
311      case __DRI_BUFFER_DEPTH_STENCIL:
312      case __DRI_BUFFER_STENCIL:
313            bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
314         break;
315   }
316
317   /* because we get the handle and stride */
318   bind |= PIPE_BIND_SHARED;
319
320   switch (format) {
321      case 32:
322         pf = PIPE_FORMAT_B8G8R8A8_UNORM;
323         break;
324      case 24:
325         pf = PIPE_FORMAT_B8G8R8X8_UNORM;
326         break;
327      case 16:
328         pf = PIPE_FORMAT_Z16_UNORM;
329         break;
330      default:
331         return NULL;
332   }
333
334   buffer = CALLOC_STRUCT(dri2_buffer);
335   if (!buffer)
336      return NULL;
337
338   memset(&templ, 0, sizeof(templ));
339   templ.bind = bind;
340   templ.format = pf;
341   templ.target = PIPE_TEXTURE_2D;
342   templ.last_level = 0;
343   templ.width0 = width;
344   templ.height0 = height;
345   templ.depth0 = 1;
346   templ.array_size = 1;
347
348   buffer->resource =
349      screen->base.screen->resource_create(screen->base.screen, &templ);
350   if (!buffer->resource) {
351      FREE(buffer);
352      return NULL;
353   }
354
355   memset(&whandle, 0, sizeof(whandle));
356   whandle.type = DRM_API_HANDLE_TYPE_SHARED;
357   screen->base.screen->resource_get_handle(screen->base.screen,
358         buffer->resource, &whandle);
359
360   buffer->base.attachment = attachment;
361   buffer->base.name = whandle.handle;
362   buffer->base.cpp = util_format_get_blocksize(pf);
363   buffer->base.pitch = whandle.stride;
364
365   return &buffer->base;
366}
367
368static void
369dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
370{
371   struct dri2_buffer *buffer = dri2_buffer(bPriv);
372
373   pipe_resource_reference(&buffer->resource, NULL);
374   FREE(buffer);
375}
376
377/*
378 * Backend functions for st_framebuffer interface.
379 */
380
381static void
382dri2_allocate_textures(struct dri_drawable *drawable,
383                       const enum st_attachment_type *statts,
384                       unsigned count)
385{
386   __DRIbuffer *buffers;
387   unsigned num_buffers = count;
388
389   buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
390   if (buffers)
391      dri2_drawable_process_buffers(drawable, buffers, num_buffers);
392}
393
394static void
395dri2_flush_frontbuffer(struct dri_drawable *drawable,
396                       enum st_attachment_type statt)
397{
398   __DRIdrawable *dri_drawable = drawable->dPriv;
399   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
400
401   if (loader->flushFrontBuffer == NULL)
402      return;
403
404   if (statt == ST_ATTACHMENT_FRONT_LEFT) {
405      loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
406   }
407}
408
409static void
410dri2_update_tex_buffer(struct dri_drawable *drawable,
411                       struct dri_context *ctx,
412                       struct pipe_resource *res)
413{
414   /* no-op */
415}
416
417static __DRIimage *
418dri2_lookup_egl_image(struct dri_screen *screen, void *handle)
419{
420   __DRIimageLookupExtension *loader = screen->sPriv->dri2.image;
421   __DRIimage *img;
422
423   if (!loader->lookupEGLImage)
424      return NULL;
425
426   img = loader->lookupEGLImage(screen->sPriv,
427				handle, screen->sPriv->loaderPrivate);
428
429   return img;
430}
431
432static __DRIimage *
433dri2_create_image_from_name(__DRIscreen *_screen,
434                            int width, int height, int format,
435                            int name, int pitch, void *loaderPrivate)
436{
437   struct dri_screen *screen = dri_screen(_screen);
438   __DRIimage *img;
439   struct pipe_resource templ;
440   struct winsys_handle whandle;
441   unsigned tex_usage;
442   enum pipe_format pf;
443
444   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
445
446   switch (format) {
447   case __DRI_IMAGE_FORMAT_RGB565:
448      pf = PIPE_FORMAT_B5G6R5_UNORM;
449      break;
450   case __DRI_IMAGE_FORMAT_XRGB8888:
451      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
452      break;
453   case __DRI_IMAGE_FORMAT_ARGB8888:
454      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
455      break;
456   case __DRI_IMAGE_FORMAT_ABGR8888:
457      pf = PIPE_FORMAT_R8G8B8A8_UNORM;
458      break;
459   default:
460      pf = PIPE_FORMAT_NONE;
461      break;
462   }
463   if (pf == PIPE_FORMAT_NONE)
464      return NULL;
465
466   img = CALLOC_STRUCT(__DRIimageRec);
467   if (!img)
468      return NULL;
469
470   memset(&templ, 0, sizeof(templ));
471   templ.bind = tex_usage;
472   templ.format = pf;
473   templ.target = screen->target;
474   templ.last_level = 0;
475   templ.width0 = width;
476   templ.height0 = height;
477   templ.depth0 = 1;
478   templ.array_size = 1;
479
480   memset(&whandle, 0, sizeof(whandle));
481   whandle.handle = name;
482   whandle.stride = pitch * util_format_get_blocksize(pf);
483
484   img->texture = screen->base.screen->resource_from_handle(screen->base.screen,
485         &templ, &whandle);
486   if (!img->texture) {
487      FREE(img);
488      return NULL;
489   }
490
491   img->level = 0;
492   img->layer = 0;
493   img->dri_format = format;
494   img->loader_private = loaderPrivate;
495
496   return img;
497}
498
499static __DRIimage *
500dri2_create_image_from_renderbuffer(__DRIcontext *context,
501				    int renderbuffer, void *loaderPrivate)
502{
503   struct dri_context *ctx = dri_context(context);
504
505   if (!ctx->st->get_resource_for_egl_image)
506      return NULL;
507
508   /* TODO */
509   return NULL;
510}
511
512static __DRIimage *
513dri2_create_image(__DRIscreen *_screen,
514                   int width, int height, int format,
515                   unsigned int use, void *loaderPrivate)
516{
517   struct dri_screen *screen = dri_screen(_screen);
518   __DRIimage *img;
519   struct pipe_resource templ;
520   unsigned tex_usage;
521   enum pipe_format pf;
522
523   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
524   if (use & __DRI_IMAGE_USE_SCANOUT)
525      tex_usage |= PIPE_BIND_SCANOUT;
526   if (use & __DRI_IMAGE_USE_SHARE)
527      tex_usage |= PIPE_BIND_SHARED;
528   if (use & __DRI_IMAGE_USE_CURSOR) {
529      if (width != 64 || height != 64)
530         return NULL;
531      tex_usage |= PIPE_BIND_CURSOR;
532   }
533
534   switch (format) {
535   case __DRI_IMAGE_FORMAT_RGB565:
536      pf = PIPE_FORMAT_B5G6R5_UNORM;
537      break;
538   case __DRI_IMAGE_FORMAT_XRGB8888:
539      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
540      break;
541   case __DRI_IMAGE_FORMAT_ARGB8888:
542      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
543      break;
544   case __DRI_IMAGE_FORMAT_ABGR8888:
545      pf = PIPE_FORMAT_R8G8B8A8_UNORM;
546      break;
547   default:
548      pf = PIPE_FORMAT_NONE;
549      break;
550   }
551   if (pf == PIPE_FORMAT_NONE)
552      return NULL;
553
554   img = CALLOC_STRUCT(__DRIimageRec);
555   if (!img)
556      return NULL;
557
558   memset(&templ, 0, sizeof(templ));
559   templ.bind = tex_usage;
560   templ.format = pf;
561   templ.target = PIPE_TEXTURE_2D;
562   templ.last_level = 0;
563   templ.width0 = width;
564   templ.height0 = height;
565   templ.depth0 = 1;
566   templ.array_size = 1;
567
568   img->texture = screen->base.screen->resource_create(screen->base.screen, &templ);
569   if (!img->texture) {
570      FREE(img);
571      return NULL;
572   }
573
574   img->level = 0;
575   img->layer = 0;
576   img->dri_format = format;
577   img->dri_components = 0;
578
579   img->loader_private = loaderPrivate;
580   return img;
581}
582
583static GLboolean
584dri2_query_image(__DRIimage *image, int attrib, int *value)
585{
586   struct winsys_handle whandle;
587   memset(&whandle, 0, sizeof(whandle));
588
589   switch (attrib) {
590   case __DRI_IMAGE_ATTRIB_STRIDE:
591      image->texture->screen->resource_get_handle(image->texture->screen,
592            image->texture, &whandle);
593      *value = whandle.stride;
594      return GL_TRUE;
595   case __DRI_IMAGE_ATTRIB_HANDLE:
596      whandle.type = DRM_API_HANDLE_TYPE_KMS;
597      image->texture->screen->resource_get_handle(image->texture->screen,
598         image->texture, &whandle);
599      *value = whandle.handle;
600      return GL_TRUE;
601   case __DRI_IMAGE_ATTRIB_NAME:
602      whandle.type = DRM_API_HANDLE_TYPE_SHARED;
603      image->texture->screen->resource_get_handle(image->texture->screen,
604         image->texture, &whandle);
605      *value = whandle.handle;
606      return GL_TRUE;
607   case __DRI_IMAGE_ATTRIB_FORMAT:
608      *value = image->dri_format;
609      return GL_TRUE;
610   case __DRI_IMAGE_ATTRIB_WIDTH:
611      *value = image->texture->width0;
612      return GL_TRUE;
613   case __DRI_IMAGE_ATTRIB_HEIGHT:
614      *value = image->texture->height0;
615      return GL_TRUE;
616   case __DRI_IMAGE_ATTRIB_COMPONENTS:
617      if (image->dri_components == 0)
618         return GL_FALSE;
619      *value = image->dri_components;
620      return GL_TRUE;
621   default:
622      return GL_FALSE;
623   }
624}
625
626static __DRIimage *
627dri2_dup_image(__DRIimage *image, void *loaderPrivate)
628{
629   __DRIimage *img;
630
631   img = CALLOC_STRUCT(__DRIimageRec);
632   if (!img)
633      return NULL;
634
635   img->texture = NULL;
636   pipe_resource_reference(&img->texture, image->texture);
637   img->level = image->level;
638   img->layer = image->layer;
639   /* This should be 0 for sub images, but dup is also used for base images. */
640   img->dri_components = image->dri_components;
641   img->loader_private = loaderPrivate;
642
643   return img;
644}
645
646static GLboolean
647dri2_validate_usage(__DRIimage *image, unsigned int use)
648{
649   /*
650    * Gallium drivers are bad at adding usages to the resources
651    * once opened again in another process, which is the main use
652    * case for this, so we have to lie.
653    */
654   if (image != NULL)
655      return GL_TRUE;
656   else
657      return GL_FALSE;
658}
659
660static __DRIimage *
661dri2_from_names(__DRIscreen *screen, int width, int height, int format,
662                int *names, int num_names, int *strides, int *offsets,
663                void *loaderPrivate)
664{
665   __DRIimage *img;
666   int stride, dri_components;
667
668   if (num_names != 1)
669      return NULL;
670   if (offsets[0] != 0)
671      return NULL;
672
673   switch(format) {
674   case __DRI_IMAGE_FOURCC_RGB565:
675      format = __DRI_IMAGE_FORMAT_RGB565;
676      dri_components = __DRI_IMAGE_COMPONENTS_RGB;
677      break;
678   case __DRI_IMAGE_FOURCC_ARGB8888:
679      format = __DRI_IMAGE_FORMAT_ARGB8888;
680      dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
681      break;
682   case __DRI_IMAGE_FOURCC_XRGB8888:
683      format = __DRI_IMAGE_FORMAT_XRGB8888;
684      dri_components = __DRI_IMAGE_COMPONENTS_RGB;
685      break;
686   case __DRI_IMAGE_FOURCC_ABGR8888:
687      format = __DRI_IMAGE_FORMAT_ABGR8888;
688      dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
689      break;
690   case __DRI_IMAGE_FOURCC_XBGR8888:
691      format = __DRI_IMAGE_FORMAT_XBGR8888;
692      dri_components = __DRI_IMAGE_COMPONENTS_RGB;
693      break;
694   default:
695      return NULL;
696   }
697
698   /* Strides are in bytes not pixels. */
699   stride = strides[0] /4;
700
701   img = dri2_create_image_from_name(screen, width, height, format,
702                                     names[0], stride, loaderPrivate);
703   if (img == NULL)
704      return NULL;
705
706   img->dri_components = dri_components;
707   return img;
708}
709
710static __DRIimage *
711dri2_from_planar(__DRIimage *image, int plane, void *loaderPrivate)
712{
713   __DRIimage *img;
714
715   if (plane != 0)
716      return NULL;
717
718   if (image->dri_components == 0)
719      return NULL;
720
721   img = dri2_dup_image(image, loaderPrivate);
722   if (img == NULL)
723      return NULL;
724
725   /* set this to 0 for sub images. */
726   img->dri_components = 0;
727   return img;
728}
729
730static void
731dri2_destroy_image(__DRIimage *img)
732{
733   pipe_resource_reference(&img->texture, NULL);
734   FREE(img);
735}
736
737static struct __DRIimageExtensionRec dri2ImageExtension = {
738    { __DRI_IMAGE, 5 },
739    dri2_create_image_from_name,
740    dri2_create_image_from_renderbuffer,
741    dri2_destroy_image,
742    dri2_create_image,
743    dri2_query_image,
744    dri2_dup_image,
745    dri2_validate_usage,
746    dri2_from_names,
747    dri2_from_planar,
748};
749
750/*
751 * Backend function init_screen.
752 */
753
754static const __DRIextension *dri_screen_extensions[] = {
755   &driTexBufferExtension.base,
756   &dri2FlushExtension.base,
757   &dri2ImageExtension.base,
758   &dri2ConfigQueryExtension.base,
759   NULL
760};
761
762static const __DRIextension *dri_screen_extensions_throttle[] = {
763   &driTexBufferExtension.base,
764   &dri2FlushExtension.base,
765   &dri2ImageExtension.base,
766   &dri2ConfigQueryExtension.base,
767   &dri2ThrottleExtension.base,
768   NULL
769};
770
771/**
772 * This is the driver specific part of the createNewScreen entry point.
773 *
774 * Returns the struct gl_config supported by this driver.
775 */
776static const __DRIconfig **
777dri2_init_screen(__DRIscreen * sPriv)
778{
779   const __DRIconfig **configs;
780   struct dri_screen *screen;
781   struct pipe_screen *pscreen;
782   const struct drm_conf_ret *throttle_ret = NULL;
783
784   screen = CALLOC_STRUCT(dri_screen);
785   if (!screen)
786      return NULL;
787
788   screen->sPriv = sPriv;
789   screen->fd = sPriv->fd;
790
791   sPriv->driverPrivate = (void *)screen;
792
793   pscreen = driver_descriptor.create_screen(screen->fd);
794   if (driver_descriptor.configuration)
795      throttle_ret = driver_descriptor.configuration(DRM_CONF_THROTTLE);
796
797   if (throttle_ret && throttle_ret->val.val_int != -1) {
798      sPriv->extensions = dri_screen_extensions_throttle;
799      screen->default_throttle_frames = throttle_ret->val.val_int;
800   } else
801      sPriv->extensions = dri_screen_extensions;
802
803   /* dri_init_screen_helper checks pscreen for us */
804
805   configs = dri_init_screen_helper(screen, pscreen, 32);
806   if (!configs)
807      goto fail;
808
809   sPriv->api_mask = 0;
810   if (screen->st_api->profile_mask & ST_PROFILE_DEFAULT_MASK)
811      sPriv->api_mask |= 1 << __DRI_API_OPENGL;
812   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES1_MASK)
813      sPriv->api_mask |= 1 << __DRI_API_GLES;
814   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES2_MASK)
815      sPriv->api_mask |= 1 << __DRI_API_GLES2;
816
817   screen->auto_fake_front = dri_with_format(sPriv);
818   screen->broken_invalidate = !sPriv->dri2.useInvalidate;
819   screen->lookup_egl_image = dri2_lookup_egl_image;
820
821   return configs;
822fail:
823   dri_destroy_screen_helper(screen);
824   FREE(screen);
825   return NULL;
826}
827
828static boolean
829dri2_create_buffer(__DRIscreen * sPriv,
830                   __DRIdrawable * dPriv,
831                   const struct gl_config * visual, boolean isPixmap)
832{
833   struct dri_drawable *drawable = NULL;
834
835   if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
836      return FALSE;
837
838   drawable = dPriv->driverPrivate;
839
840   drawable->allocate_textures = dri2_allocate_textures;
841   drawable->flush_frontbuffer = dri2_flush_frontbuffer;
842   drawable->update_tex_buffer = dri2_update_tex_buffer;
843
844   return TRUE;
845}
846
847/**
848 * DRI driver virtual function table.
849 *
850 * DRI versions differ in their implementation of init_screen and swap_buffers.
851 */
852const struct __DriverAPIRec driDriverAPI = {
853   .InitScreen = dri2_init_screen,
854   .DestroyScreen = dri_destroy_screen,
855   .CreateContext = dri_create_context,
856   .DestroyContext = dri_destroy_context,
857   .CreateBuffer = dri2_create_buffer,
858   .DestroyBuffer = dri_destroy_buffer,
859   .MakeCurrent = dri_make_current,
860   .UnbindContext = dri_unbind_context,
861
862   .AllocateBuffer = dri2_allocate_buffer,
863   .ReleaseBuffer  = dri2_release_buffer,
864};
865
866/* This is the table of extensions that the loader will dlsym() for. */
867PUBLIC const __DRIextension *__driDriverExtensions[] = {
868    &driCoreExtension.base,
869    &driDRI2Extension.base,
870    NULL
871};
872
873/* vim: set sw=3 ts=8 sts=3 expandtab: */
874