dri2.c revision c14b4371ed58859d264b7b2581cfedc9cfd8401f 
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
42/**
43 * DRI2 flush extension.
44 */
45static void
46dri2_flush_drawable(__DRIdrawable *draw)
47{
48}
49
50static void
51dri2_invalidate_drawable(__DRIdrawable *dPriv)
52{
53   struct dri_drawable *drawable = dri_drawable(dPriv);
54   struct dri_context *ctx = dri_context(dPriv->driContextPriv);
55
56   dri2InvalidateDrawable(dPriv);
57   drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
58
59   if (ctx)
60      ctx->st->notify_invalid_framebuffer(ctx->st, &drawable->base);
61}
62
63static const __DRI2flushExtension dri2FlushExtension = {
64    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
65    dri2_flush_drawable,
66    dri2_invalidate_drawable,
67};
68
69/**
70 * Retrieve __DRIbuffer from the DRI loader.
71 */
72static __DRIbuffer *
73dri2_drawable_get_buffers(struct dri_drawable *drawable,
74                          const enum st_attachment_type *statts,
75                          unsigned *count)
76{
77   __DRIdrawable *dri_drawable = drawable->dPriv;
78   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
79   boolean with_format;
80   __DRIbuffer *buffers;
81   int num_buffers;
82   unsigned attachments[10];
83   unsigned num_attachments, i;
84
85   assert(loader);
86   with_format = dri_with_format(drawable->sPriv);
87
88   num_attachments = 0;
89
90   /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
91   if (!with_format)
92      attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
93
94   for (i = 0; i < *count; i++) {
95      enum pipe_format format;
96      unsigned bind;
97      int att, bpp;
98
99      dri_drawable_get_format(drawable, statts[i], &format, &bind);
100      if (format == PIPE_FORMAT_NONE)
101         continue;
102
103      switch (statts[i]) {
104      case ST_ATTACHMENT_FRONT_LEFT:
105         /* already added */
106         if (!with_format)
107            continue;
108         att = __DRI_BUFFER_FRONT_LEFT;
109         break;
110      case ST_ATTACHMENT_BACK_LEFT:
111         att = __DRI_BUFFER_BACK_LEFT;
112         break;
113      case ST_ATTACHMENT_FRONT_RIGHT:
114         att = __DRI_BUFFER_FRONT_RIGHT;
115         break;
116      case ST_ATTACHMENT_BACK_RIGHT:
117         att = __DRI_BUFFER_BACK_RIGHT;
118         break;
119      case ST_ATTACHMENT_DEPTH_STENCIL:
120         att = __DRI_BUFFER_DEPTH_STENCIL;
121         break;
122      default:
123         att = -1;
124         break;
125      }
126
127      bpp = util_format_get_blocksizebits(format);
128
129      if (att >= 0) {
130         attachments[num_attachments++] = att;
131         if (with_format) {
132            attachments[num_attachments++] = bpp;
133         }
134      }
135   }
136
137   if (with_format) {
138      num_attachments /= 2;
139      buffers = loader->getBuffersWithFormat(dri_drawable,
140            &dri_drawable->w, &dri_drawable->h,
141            attachments, num_attachments,
142            &num_buffers, dri_drawable->loaderPrivate);
143   }
144   else {
145      buffers = loader->getBuffers(dri_drawable,
146            &dri_drawable->w, &dri_drawable->h,
147            attachments, num_attachments,
148            &num_buffers, dri_drawable->loaderPrivate);
149   }
150
151   if (buffers) {
152      /* set one cliprect to cover the whole dri_drawable */
153      dri_drawable->x = 0;
154      dri_drawable->y = 0;
155      dri_drawable->backX = 0;
156      dri_drawable->backY = 0;
157      dri_drawable->numClipRects = 1;
158      dri_drawable->pClipRects[0].x1 = 0;
159      dri_drawable->pClipRects[0].y1 = 0;
160      dri_drawable->pClipRects[0].x2 = dri_drawable->w;
161      dri_drawable->pClipRects[0].y2 = dri_drawable->h;
162      dri_drawable->numBackClipRects = 1;
163      dri_drawable->pBackClipRects[0].x1 = 0;
164      dri_drawable->pBackClipRects[0].y1 = 0;
165      dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
166      dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
167
168      *count = num_buffers;
169   }
170
171   return buffers;
172}
173
174/**
175 * Process __DRIbuffer and convert them into pipe_resources.
176 */
177static void
178dri2_drawable_process_buffers(struct dri_drawable *drawable,
179                              __DRIbuffer *buffers, unsigned count)
180{
181   struct dri_screen *screen = dri_screen(drawable->sPriv);
182   __DRIdrawable *dri_drawable = drawable->dPriv;
183   struct pipe_resource templ;
184   struct winsys_handle whandle;
185   boolean have_depth = FALSE;
186   unsigned i, bind;
187
188   if (drawable->old_num == count &&
189       drawable->old_w == dri_drawable->w &&
190       drawable->old_h == dri_drawable->h &&
191       memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
192      return;
193
194   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
195      pipe_resource_reference(&drawable->textures[i], NULL);
196
197   memset(&templ, 0, sizeof(templ));
198   templ.target = PIPE_TEXTURE_2D;
199   templ.last_level = 0;
200   templ.width0 = dri_drawable->w;
201   templ.height0 = dri_drawable->h;
202   templ.depth0 = 1;
203
204   memset(&whandle, 0, sizeof(whandle));
205
206   for (i = 0; i < count; i++) {
207      __DRIbuffer *buf = &buffers[i];
208      enum st_attachment_type statt;
209      enum pipe_format format;
210
211      switch (buf->attachment) {
212      case __DRI_BUFFER_FRONT_LEFT:
213         if (!screen->auto_fake_front) {
214            statt = ST_ATTACHMENT_INVALID;
215            break;
216         }
217         /* fallthrough */
218      case __DRI_BUFFER_FAKE_FRONT_LEFT:
219         statt = ST_ATTACHMENT_FRONT_LEFT;
220         break;
221      case __DRI_BUFFER_BACK_LEFT:
222         statt = ST_ATTACHMENT_BACK_LEFT;
223         break;
224      case __DRI_BUFFER_DEPTH:
225      case __DRI_BUFFER_DEPTH_STENCIL:
226      case __DRI_BUFFER_STENCIL:
227         /* use only the first depth/stencil buffer */
228         if (!have_depth) {
229            have_depth = TRUE;
230            statt = ST_ATTACHMENT_DEPTH_STENCIL;
231         }
232         else {
233            statt = ST_ATTACHMENT_INVALID;
234         }
235         break;
236      default:
237         statt = ST_ATTACHMENT_INVALID;
238         break;
239      }
240
241      dri_drawable_get_format(drawable, statt, &format, &bind);
242      if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
243         continue;
244
245      templ.format = format;
246      templ.bind = bind;
247      whandle.handle = buf->name;
248      whandle.stride = buf->pitch;
249
250      drawable->textures[statt] =
251         screen->base.screen->resource_from_handle(screen->base.screen,
252               &templ, &whandle);
253   }
254
255   drawable->old_num = count;
256   drawable->old_w = dri_drawable->w;
257   drawable->old_h = dri_drawable->h;
258   memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
259}
260
261/*
262 * Backend functions for st_framebuffer interface.
263 */
264
265static void
266dri2_allocate_textures(struct dri_drawable *drawable,
267                       const enum st_attachment_type *statts,
268                       unsigned count)
269{
270   __DRIbuffer *buffers;
271   unsigned num_buffers = count;
272
273   buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
274   if (buffers)
275      dri2_drawable_process_buffers(drawable, buffers, num_buffers);
276}
277
278static void
279dri2_flush_frontbuffer(struct dri_drawable *drawable,
280                       enum st_attachment_type statt)
281{
282   __DRIdrawable *dri_drawable = drawable->dPriv;
283   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
284
285   if (loader->flushFrontBuffer == NULL)
286      return;
287
288   if (statt == ST_ATTACHMENT_FRONT_LEFT) {
289      loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
290   }
291}
292
293static __DRIimage *
294dri2_lookup_egl_image(struct dri_context *ctx, void *handle)
295{
296   __DRIimageLookupExtension *loader = ctx->sPriv->dri2.image;
297   __DRIimage *img;
298
299   if (!loader->lookupEGLImage)
300      return NULL;
301
302   img = loader->lookupEGLImage(ctx->cPriv, handle, ctx->cPriv->loaderPrivate);
303
304   return img;
305}
306
307static __DRIimage *
308dri2_create_image_from_name(__DRIcontext *context,
309                            int width, int height, int format,
310                            int name, int pitch, void *loaderPrivate)
311{
312   struct dri_screen *screen = dri_screen(context->driScreenPriv);
313   __DRIimage *img;
314   struct pipe_resource templ;
315   struct winsys_handle whandle;
316   unsigned tex_usage;
317   enum pipe_format pf;
318
319   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
320
321   switch (format) {
322   case __DRI_IMAGE_FORMAT_RGB565:
323      pf = PIPE_FORMAT_B5G6R5_UNORM;
324      break;
325   case __DRI_IMAGE_FORMAT_XRGB8888:
326      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
327      break;
328   case __DRI_IMAGE_FORMAT_ARGB8888:
329      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
330      break;
331   default:
332      pf = PIPE_FORMAT_NONE;
333      break;
334   }
335   if (pf == PIPE_FORMAT_NONE)
336      return NULL;
337
338   img = CALLOC_STRUCT(__DRIimageRec);
339   if (!img)
340      return NULL;
341
342   memset(&templ, 0, sizeof(templ));
343   templ.bind = tex_usage;
344   templ.format = pf;
345   templ.target = PIPE_TEXTURE_2D;
346   templ.last_level = 0;
347   templ.width0 = width;
348   templ.height0 = height;
349   templ.depth0 = 1;
350
351   memset(&whandle, 0, sizeof(whandle));
352   whandle.handle = name;
353   whandle.stride = pitch * util_format_get_blocksize(pf);
354
355   img->texture = screen->base.screen->resource_from_handle(screen->base.screen,
356         &templ, &whandle);
357   if (!img->texture) {
358      FREE(img);
359      return NULL;
360   }
361
362   img->face = 0;
363   img->level = 0;
364   img->zslice = 0;
365   img->loader_private = loaderPrivate;
366
367   return img;
368}
369
370static __DRIimage *
371dri2_create_image_from_renderbuffer(__DRIcontext *context,
372				    int renderbuffer, void *loaderPrivate)
373{
374   struct dri_context *ctx = dri_context(context->driverPrivate);
375
376   if (!ctx->st->get_resource_for_egl_image)
377      return NULL;
378
379   /* TODO */
380   return NULL;
381}
382
383static void
384dri2_destroy_image(__DRIimage *img)
385{
386   pipe_resource_reference(&img->texture, NULL);
387   FREE(img);
388}
389
390static struct __DRIimageExtensionRec dri2ImageExtension = {
391    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
392    dri2_create_image_from_name,
393    dri2_create_image_from_renderbuffer,
394    dri2_destroy_image,
395};
396
397/*
398 * Backend function init_screen.
399 */
400
401static const __DRIextension *dri_screen_extensions[] = {
402   &driReadDrawableExtension,
403   &driCopySubBufferExtension.base,
404   &driSwapControlExtension.base,
405   &driMediaStreamCounterExtension.base,
406   &driTexBufferExtension.base,
407   &dri2FlushExtension.base,
408   &dri2ImageExtension.base,
409   &dri2ConfigQueryExtension.base,
410   NULL
411};
412
413/**
414 * This is the driver specific part of the createNewScreen entry point.
415 *
416 * Returns the __GLcontextModes supported by this driver.
417 */
418static const __DRIconfig **
419dri2_init_screen(__DRIscreen * sPriv)
420{
421   const __DRIconfig **configs;
422   struct dri_screen *screen;
423   struct pipe_screen *pscreen;
424
425   screen = CALLOC_STRUCT(dri_screen);
426   if (!screen)
427      return NULL;
428
429   screen->sPriv = sPriv;
430   screen->fd = sPriv->fd;
431
432   sPriv->private = (void *)screen;
433   sPriv->extensions = dri_screen_extensions;
434
435   pscreen = driver_descriptor.create_screen(screen->fd);
436   /* dri_init_screen_helper checks pscreen for us */
437
438   configs = dri_init_screen_helper(screen, pscreen, 32);
439   if (!configs)
440      goto fail;
441
442   screen->auto_fake_front = dri_with_format(sPriv);
443   screen->broken_invalidate = !sPriv->dri2.useInvalidate;
444
445   return configs;
446fail:
447   dri_destroy_screen_helper(screen);
448   FREE(screen);
449   return NULL;
450}
451
452static boolean
453dri2_create_context(gl_api api, const __GLcontextModes * visual,
454                    __DRIcontext * cPriv, void *sharedContextPrivate)
455{
456   struct dri_context *ctx = NULL;
457
458   if (!dri_create_context(api, visual, cPriv, sharedContextPrivate))
459      return FALSE;
460
461   ctx = cPriv->driverPrivate;
462
463   ctx->lookup_egl_image = dri2_lookup_egl_image;
464
465   return TRUE;
466}
467
468static boolean
469dri2_create_buffer(__DRIscreen * sPriv,
470                   __DRIdrawable * dPriv,
471                   const __GLcontextModes * visual, boolean isPixmap)
472{
473   struct dri_drawable *drawable = NULL;
474
475   if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
476      return FALSE;
477
478   drawable = dPriv->driverPrivate;
479
480   drawable->allocate_textures = dri2_allocate_textures;
481   drawable->flush_frontbuffer = dri2_flush_frontbuffer;
482
483   return TRUE;
484}
485
486/**
487 * DRI driver virtual function table.
488 *
489 * DRI versions differ in their implementation of init_screen and swap_buffers.
490 */
491const struct __DriverAPIRec driDriverAPI = {
492   .InitScreen = NULL,
493   .InitScreen2 = dri2_init_screen,
494   .DestroyScreen = dri_destroy_screen,
495   .CreateContext = dri2_create_context,
496   .DestroyContext = dri_destroy_context,
497   .CreateBuffer = dri2_create_buffer,
498   .DestroyBuffer = dri_destroy_buffer,
499   .MakeCurrent = dri_make_current,
500   .UnbindContext = dri_unbind_context,
501
502   .GetSwapInfo = NULL,
503   .GetDrawableMSC = NULL,
504   .WaitForMSC = NULL,
505
506   .SwapBuffers = NULL,
507   .CopySubBuffer = NULL,
508};
509
510/* This is the table of extensions that the loader will dlsym() for. */
511PUBLIC const __DRIextension *__driDriverExtensions[] = {
512    &driCoreExtension.base,
513    &driLegacyExtension.base,
514    &driDRI2Extension.base,
515    NULL
516};
517
518/* vim: set sw=3 ts=8 sts=3 expandtab: */
519