dri2.c revision a523b622036117e8bc1be0a1496d4368562e9702 
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_api.h"
37
38#include "dri_screen.h"
39#include "dri_context.h"
40#include "dri_drawable.h"
41#include "dri_st_api.h"
42#include "dri2.h"
43
44/**
45 * DRI2 flush extension.
46 */
47static void
48dri2_flush_drawable(__DRIdrawable *draw)
49{
50}
51
52static void
53dri2_invalidate_drawable(__DRIdrawable *dPriv)
54{
55   struct dri_drawable *drawable = dri_drawable(dPriv);
56   struct dri_context *ctx = dri_context(dPriv->driContextPriv);
57
58   dri2InvalidateDrawable(dPriv);
59   drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
60
61   if (ctx)
62      ctx->st->notify_invalid_framebuffer(ctx->st, drawable->stfb);
63}
64
65static const __DRI2flushExtension dri2FlushExtension = {
66    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
67    dri2_flush_drawable,
68    dri2_invalidate_drawable,
69};
70
71/**
72 * These are used for GLX_EXT_texture_from_pixmap
73 */
74static void
75dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
76                     GLint format, __DRIdrawable *dPriv)
77{
78   struct dri_context *ctx = dri_context(pDRICtx);
79   struct dri_drawable *drawable = dri_drawable(dPriv);
80   struct pipe_resource *pt;
81
82   dri_st_framebuffer_validate_att(drawable->stfb, ST_ATTACHMENT_FRONT_LEFT);
83
84   pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
85
86   if (pt) {
87      enum pipe_format internal_format = pt->format;
88
89      if (format == __DRI_TEXTURE_FORMAT_RGB)  {
90         /* only need to cover the formats recognized by dri_fill_st_visual */
91         switch (internal_format) {
92         case PIPE_FORMAT_B8G8R8A8_UNORM:
93            internal_format = PIPE_FORMAT_B8G8R8X8_UNORM;
94            break;
95         case PIPE_FORMAT_A8R8G8B8_UNORM:
96            internal_format = PIPE_FORMAT_X8R8G8B8_UNORM;
97            break;
98         default:
99            break;
100         }
101      }
102
103      ctx->st->teximage(ctx->st,
104            (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
105            0, internal_format, pt, FALSE);
106   }
107}
108
109static void
110dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
111                    __DRIdrawable *dPriv)
112{
113   dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
114}
115
116static const __DRItexBufferExtension dri2TexBufferExtension = {
117    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
118   dri2_set_tex_buffer,
119   dri2_set_tex_buffer2,
120};
121
122/**
123 * Get the format and binding of an attachment.
124 */
125static INLINE void
126dri2_drawable_get_format(struct dri_drawable *drawable,
127                         enum st_attachment_type statt,
128                         enum pipe_format *format,
129                         unsigned *bind)
130{
131   switch (statt) {
132   case ST_ATTACHMENT_FRONT_LEFT:
133   case ST_ATTACHMENT_BACK_LEFT:
134   case ST_ATTACHMENT_FRONT_RIGHT:
135   case ST_ATTACHMENT_BACK_RIGHT:
136      *format = drawable->stvis.color_format;
137      *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
138      break;
139   case ST_ATTACHMENT_DEPTH_STENCIL:
140      *format = drawable->stvis.depth_stencil_format;
141      *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
142      break;
143   default:
144      *format = PIPE_FORMAT_NONE;
145      *bind = 0;
146      break;
147   }
148}
149
150
151/**
152 * Retrieve __DRIbuffer from the DRI loader.
153 */
154static __DRIbuffer *
155dri2_drawable_get_buffers(struct dri_drawable *drawable,
156                          const enum st_attachment_type *statts,
157                          unsigned *count)
158{
159   __DRIdrawable *dri_drawable = drawable->dPriv;
160   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
161   boolean with_format;
162   __DRIbuffer *buffers;
163   int num_buffers;
164   unsigned attachments[10];
165   unsigned num_attachments, i;
166
167   assert(loader);
168   with_format = dri_with_format(drawable->sPriv);
169
170   num_attachments = 0;
171
172   /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
173   if (!with_format)
174      attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
175
176   for (i = 0; i < *count; i++) {
177      enum pipe_format format;
178      unsigned bind;
179      int att, bpp;
180
181      dri2_drawable_get_format(drawable, statts[i], &format, &bind);
182      if (format == PIPE_FORMAT_NONE)
183         continue;
184
185      switch (statts[i]) {
186      case ST_ATTACHMENT_FRONT_LEFT:
187         /* already added */
188         if (!with_format)
189            continue;
190         att = __DRI_BUFFER_FRONT_LEFT;
191         break;
192      case ST_ATTACHMENT_BACK_LEFT:
193         att = __DRI_BUFFER_BACK_LEFT;
194         break;
195      case ST_ATTACHMENT_FRONT_RIGHT:
196         att = __DRI_BUFFER_FRONT_RIGHT;
197         break;
198      case ST_ATTACHMENT_BACK_RIGHT:
199         att = __DRI_BUFFER_BACK_RIGHT;
200         break;
201      case ST_ATTACHMENT_DEPTH_STENCIL:
202         att = __DRI_BUFFER_DEPTH_STENCIL;
203         break;
204      default:
205         att = -1;
206         break;
207      }
208
209      bpp = util_format_get_blocksizebits(format);
210
211      if (att >= 0) {
212         attachments[num_attachments++] = att;
213         if (with_format) {
214            attachments[num_attachments++] = bpp;
215         }
216      }
217   }
218
219   if (with_format) {
220      num_attachments /= 2;
221      buffers = loader->getBuffersWithFormat(dri_drawable,
222            &dri_drawable->w, &dri_drawable->h,
223            attachments, num_attachments,
224            &num_buffers, dri_drawable->loaderPrivate);
225   }
226   else {
227      buffers = loader->getBuffers(dri_drawable,
228            &dri_drawable->w, &dri_drawable->h,
229            attachments, num_attachments,
230            &num_buffers, dri_drawable->loaderPrivate);
231   }
232
233   if (buffers) {
234      /* set one cliprect to cover the whole dri_drawable */
235      dri_drawable->x = 0;
236      dri_drawable->y = 0;
237      dri_drawable->backX = 0;
238      dri_drawable->backY = 0;
239      dri_drawable->numClipRects = 1;
240      dri_drawable->pClipRects[0].x1 = 0;
241      dri_drawable->pClipRects[0].y1 = 0;
242      dri_drawable->pClipRects[0].x2 = dri_drawable->w;
243      dri_drawable->pClipRects[0].y2 = dri_drawable->h;
244      dri_drawable->numBackClipRects = 1;
245      dri_drawable->pBackClipRects[0].x1 = 0;
246      dri_drawable->pBackClipRects[0].y1 = 0;
247      dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
248      dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
249
250      *count = num_buffers;
251   }
252
253   return buffers;
254}
255
256/**
257 * Process __DRIbuffer and convert them into pipe_resources.
258 */
259static void
260dri2_drawable_process_buffers(struct dri_drawable *drawable,
261                              __DRIbuffer *buffers, unsigned count)
262{
263   struct dri_screen *screen = dri_screen(drawable->sPriv);
264   __DRIdrawable *dri_drawable = drawable->dPriv;
265   struct pipe_resource templ;
266   struct winsys_handle whandle;
267   boolean have_depth = FALSE;
268   unsigned i, bind;
269
270   if (drawable->old_num == count &&
271       drawable->old_w == dri_drawable->w &&
272       drawable->old_h == dri_drawable->h &&
273       memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
274      return;
275
276   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
277      pipe_resource_reference(&drawable->textures[i], NULL);
278
279   memset(&templ, 0, sizeof(templ));
280   templ.target = PIPE_TEXTURE_2D;
281   templ.last_level = 0;
282   templ.width0 = dri_drawable->w;
283   templ.height0 = dri_drawable->h;
284   templ.depth0 = 1;
285
286   memset(&whandle, 0, sizeof(whandle));
287
288   for (i = 0; i < count; i++) {
289      __DRIbuffer *buf = &buffers[i];
290      enum st_attachment_type statt;
291      enum pipe_format format;
292
293      switch (buf->attachment) {
294      case __DRI_BUFFER_FRONT_LEFT:
295         if (!screen->auto_fake_front) {
296            statt = ST_ATTACHMENT_INVALID;
297            break;
298         }
299         /* fallthrough */
300      case __DRI_BUFFER_FAKE_FRONT_LEFT:
301         statt = ST_ATTACHMENT_FRONT_LEFT;
302         break;
303      case __DRI_BUFFER_BACK_LEFT:
304         statt = ST_ATTACHMENT_BACK_LEFT;
305         break;
306      case __DRI_BUFFER_DEPTH:
307      case __DRI_BUFFER_DEPTH_STENCIL:
308      case __DRI_BUFFER_STENCIL:
309         /* use only the first depth/stencil buffer */
310         if (!have_depth) {
311            have_depth = TRUE;
312            statt = ST_ATTACHMENT_DEPTH_STENCIL;
313         }
314         else {
315            statt = ST_ATTACHMENT_INVALID;
316         }
317         break;
318      default:
319         statt = ST_ATTACHMENT_INVALID;
320         break;
321      }
322
323      dri2_drawable_get_format(drawable, statt, &format, &bind);
324      if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
325         continue;
326
327      templ.format = format;
328      templ.bind = bind;
329      whandle.handle = buf->name;
330      whandle.stride = buf->pitch;
331
332      drawable->textures[statt] =
333         screen->pipe_screen->resource_from_handle(screen->pipe_screen,
334               &templ, &whandle);
335   }
336
337   drawable->old_num = count;
338   drawable->old_w = dri_drawable->w;
339   drawable->old_h = dri_drawable->h;
340   memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
341}
342
343/*
344 * Backend functions for st_framebuffer interface.
345 */
346
347void
348dri2_allocate_textures(struct dri_drawable *drawable,
349                       const enum st_attachment_type *statts,
350                       unsigned count)
351{
352   __DRIbuffer *buffers;
353   unsigned num_buffers = count;
354
355   buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
356   dri2_drawable_process_buffers(drawable, buffers, num_buffers);
357}
358
359void
360dri2_flush_frontbuffer(struct dri_drawable *drawable,
361                       enum st_attachment_type statt)
362{
363   __DRIdrawable *dri_drawable = drawable->dPriv;
364   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
365
366   if (loader->flushFrontBuffer == NULL)
367      return;
368
369   if (statt == ST_ATTACHMENT_FRONT_LEFT) {
370      loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
371   }
372}
373
374__DRIimage *
375dri2_lookup_egl_image(struct dri_context *ctx, void *handle)
376{
377   __DRIimageLookupExtension *loader = ctx->sPriv->dri2.image;
378   __DRIimage *img;
379
380   if (!loader->lookupEGLImage)
381      return NULL;
382
383   img = loader->lookupEGLImage(ctx->cPriv, handle, ctx->cPriv->loaderPrivate);
384
385   return img;
386}
387
388static __DRIimage *
389dri2_create_image_from_name(__DRIcontext *context,
390                            int width, int height, int format,
391                            int name, int pitch, void *loaderPrivate)
392{
393   struct dri_screen *screen = dri_screen(context->driScreenPriv);
394   __DRIimage *img;
395   struct pipe_resource templ;
396   struct winsys_handle whandle;
397   unsigned tex_usage;
398   enum pipe_format pf;
399
400   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
401
402   switch (format) {
403   case __DRI_IMAGE_FORMAT_RGB565:
404      pf = PIPE_FORMAT_B5G6R5_UNORM;
405      break;
406   case __DRI_IMAGE_FORMAT_XRGB8888:
407      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
408      break;
409   case __DRI_IMAGE_FORMAT_ARGB8888:
410      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
411      break;
412   default:
413      pf = PIPE_FORMAT_NONE;
414      break;
415   }
416   if (pf == PIPE_FORMAT_NONE)
417      return NULL;
418
419   img = CALLOC_STRUCT(__DRIimageRec);
420   if (!img)
421      return NULL;
422
423   memset(&templ, 0, sizeof(templ));
424   templ.bind = tex_usage;
425   templ.format = pf;
426   templ.target = PIPE_TEXTURE_2D;
427   templ.last_level = 0;
428   templ.width0 = width;
429   templ.height0 = height;
430   templ.depth0 = 1;
431
432   memset(&whandle, 0, sizeof(whandle));
433   whandle.handle = name;
434   whandle.stride = pitch * util_format_get_blocksize(pf);
435
436   img->texture = screen->pipe_screen->resource_from_handle(screen->pipe_screen,
437         &templ, &whandle);
438   if (!img->texture) {
439      FREE(img);
440      return NULL;
441   }
442
443   img->face = 0;
444   img->level = 0;
445   img->zslice = 0;
446   img->loader_private = loaderPrivate;
447
448   return img;
449}
450
451static __DRIimage *
452dri2_create_image_from_renderbuffer(__DRIcontext *context,
453				    int renderbuffer, void *loaderPrivate)
454{
455   struct dri_context *ctx = dri_context(context->driverPrivate);
456
457   if (!ctx->st->get_resource_for_egl_image)
458      return NULL;
459
460   /* TODO */
461   return NULL;
462}
463
464static void
465dri2_destroy_image(__DRIimage *img)
466{
467   pipe_resource_reference(&img->texture, NULL);
468   FREE(img);
469}
470
471static struct __DRIimageExtensionRec dri2ImageExtension = {
472    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
473    dri2_create_image_from_name,
474    dri2_create_image_from_renderbuffer,
475    dri2_destroy_image,
476};
477
478/*
479 * Backend function init_screen.
480 */
481
482static const __DRIextension *dri_screen_extensions[] = {
483   &driReadDrawableExtension,
484   &driCopySubBufferExtension.base,
485   &driSwapControlExtension.base,
486   &driFrameTrackingExtension.base,
487   &driMediaStreamCounterExtension.base,
488   &dri2TexBufferExtension.base,
489   &dri2FlushExtension.base,
490   &dri2ImageExtension.base,
491   NULL
492};
493
494/**
495 * This is the driver specific part of the createNewScreen entry point.
496 *
497 * Returns the __GLcontextModes supported by this driver.
498 */
499const __DRIconfig **
500dri2_init_screen(__DRIscreen * sPriv)
501{
502   const __DRIconfig **configs;
503   struct dri_screen *screen;
504   struct pipe_screen *pscreen;
505
506   screen = CALLOC_STRUCT(dri_screen);
507   if (!screen)
508      return NULL;
509
510   screen->api = drm_api_create();
511   screen->sPriv = sPriv;
512   screen->fd = sPriv->fd;
513
514   sPriv->private = (void *)screen;
515   sPriv->extensions = dri_screen_extensions;
516
517   pscreen = screen->api->create_screen(screen->api, screen->fd, NULL);
518   /* dri_init_screen_helper checks pscreen for us */
519
520   configs = dri_init_screen_helper(screen, pscreen, 32);
521   if (!configs)
522      goto fail;
523
524   screen->auto_fake_front = dri_with_format(sPriv);
525
526   return configs;
527fail:
528   dri_destroy_screen_helper(screen);
529   FREE(screen);
530   return NULL;
531}
532
533/* This is the table of extensions that the loader will dlsym() for. */
534PUBLIC const __DRIextension *__driDriverExtensions[] = {
535    &driCoreExtension.base,
536    &driLegacyExtension.base,
537    &driDRI2Extension.base,
538    NULL
539};
540
541/* vim: set sw=3 ts=8 sts=3 expandtab: */
542