aboutsummaryrefslogtreecommitdiffstats
path: root/src/gallium/state_trackers/dri/drm/dri1.c
blob: 98bdb2936a1656caac1058694a72037360c70d92 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
/**************************************************************************
 *
 * Copyright 2009, VMware, Inc.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/
/*
 * Author: Keith Whitwell <keithw@vmware.com>
 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
 */

/* XXX DRI1 is untested after the switch to st_api.h */

#include "util/u_memory.h"
#include "util/u_rect.h"
#include "util/u_inlines.h"
#include "pipe/p_context.h"
#include "state_tracker/dri1_api.h"

#include "dri_screen.h"
#include "dri_context.h"
#include "dri_drawable.h"
#include "dri_st_api.h"
#include "dri1_helper.h"
#include "dri1.h"

static INLINE void
dri1_lock(struct dri_context *ctx)
{
   drm_context_t hw_context = ctx->cPriv->hHWContext;
   char ret = 0;

   DRM_CAS(ctx->lock, hw_context, DRM_LOCK_HELD | hw_context, ret);
   if (ret) {
      drmGetLock(ctx->sPriv->fd, hw_context, 0);
      ctx->stLostLock = TRUE;
      ctx->wsLostLock = TRUE;
   }
   ctx->isLocked = TRUE;
}

static INLINE void
dri1_unlock(struct dri_context *ctx)
{
   ctx->isLocked = FALSE;
   DRM_UNLOCK(ctx->sPriv->fd, ctx->lock, ctx->cPriv->hHWContext);
}

static void
dri1_update_drawables_locked(struct dri_context *ctx,
			     __DRIdrawable * driDrawPriv,
			     __DRIdrawable * driReadPriv)
{
   if (ctx->stLostLock) {
      ctx->stLostLock = FALSE;
      if (driDrawPriv == driReadPriv)
	 DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
      else
	 DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
					 driReadPriv);
   }
}

/**
 * This ensures all contexts which bind to a drawable pick up the
 * drawable change and signal new buffer state.
 */
static void
dri1_propagate_drawable_change(struct dri_context *ctx)
{
   __DRIdrawable *dPriv = ctx->dPriv;
   __DRIdrawable *rPriv = ctx->rPriv;
   struct dri_drawable *draw = dri_drawable(dPriv);
   struct dri_drawable *read = dri_drawable(rPriv);
   boolean flushed = FALSE;

   if (dPriv && draw->texture_stamp != dPriv->lastStamp) {
      ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
      flushed = TRUE;
      ctx->st->notify_invalid_framebuffer(ctx->st, draw->stfb);
   }

   if (rPriv && dPriv != rPriv && read->texture_stamp != rPriv->lastStamp) {
      if (!flushed)
	 ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
      ctx->st->notify_invalid_framebuffer(ctx->st, read->stfb);
   }
}

static INLINE boolean
dri1_intersect_src_bbox(struct drm_clip_rect *dst,
			int dst_x,
			int dst_y,
			const struct drm_clip_rect *src,
			const struct drm_clip_rect *bbox)
{
   int xy1;
   int xy2;

   xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
      (int)bbox->x1 + dst_x;
   xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
      (int)bbox->x2 + dst_x;
   if (xy1 >= xy2 || xy1 < 0)
      return FALSE;

   dst->x1 = xy1;
   dst->x2 = xy2;

   xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
      (int)bbox->y1 + dst_y;
   xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
      (int)bbox->y2 + dst_y;
   if (xy1 >= xy2 || xy1 < 0)
      return FALSE;

   dst->y1 = xy1;
   dst->y2 = xy2;
   return TRUE;
}

static void
dri1_swap_copy(struct pipe_context *pipe,
	       struct pipe_surface *dst,
	       struct pipe_surface *src,
	       __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
{
   struct drm_clip_rect clip;
   struct drm_clip_rect *cur;
   int i;

   cur = dPriv->pClipRects;

   for (i = 0; i < dPriv->numClipRects; ++i) {
      if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
         if (pipe->surface_copy) {
            pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
                               src,
                               (int)clip.x1 - dPriv->x,
                               (int)clip.y1 - dPriv->y,
                               clip.x2 - clip.x1, clip.y2 - clip.y1);
         } else {
            util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
                              src,
                              (int)clip.x1 - dPriv->x,
                              (int)clip.y1 - dPriv->y,
                              clip.x2 - clip.x1, clip.y2 - clip.y1);
         }
      }
   }
}

static void
dri1_present_texture_locked(__DRIdrawable * dPriv,
                            struct pipe_texture *ptex,
                            const struct drm_clip_rect *sub_box,
                            struct pipe_fence_handle **fence)
{
   struct dri_drawable *drawable = dri_drawable(dPriv);
   struct dri_screen *screen = dri_screen(drawable->sPriv);
   struct pipe_context *pipe;
   struct pipe_surface *psurf;
   struct drm_clip_rect bbox;
   boolean visible = TRUE;

   *fence = NULL;

   bbox.x1 = 0;
   bbox.x2 = ptex->width0;
   bbox.y1 = 0;
   bbox.y2 = ptex->height0;

   if (sub_box)
      visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
   if (!visible)
      return;

   pipe = dri1_get_pipe_context(screen);
   psurf = dri1_get_pipe_surface(drawable, ptex);
   if (!pipe || !psurf)
      return;

   if (__dri1_api_hooks->present_locked) {
      __dri1_api_hooks->present_locked(pipe, psurf,
                                       dPriv->pClipRects, dPriv->numClipRects,
                                       dPriv->x, dPriv->y, &bbox, fence);
   } else if (__dri1_api_hooks->front_srf_locked) {
      struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);

      if (front)
         dri1_swap_copy(pipe, front, psurf, dPriv, &bbox);

      pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, fence);
   }
}

static void
dri1_copy_to_front(struct dri_context *ctx,
		   struct pipe_texture *ptex,
		   __DRIdrawable * dPriv,
		   const struct drm_clip_rect *sub_box,
		   struct pipe_fence_handle **fence)
{
   boolean save_lost_lock;

   dri1_lock(ctx);
   save_lost_lock = ctx->stLostLock;
   dri1_update_drawables_locked(ctx, dPriv, dPriv);

   dri1_present_texture_locked(dPriv, ptex, sub_box, fence);

   ctx->stLostLock = save_lost_lock;

   /**
    * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
    */

   if (!sub_box)
      dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);

   dri1_unlock(ctx);
   dri1_propagate_drawable_change(ctx);
}

/*
 * Backend functions for st_framebuffer interface and swap_buffers.
 */

void
dri1_flush_frontbuffer(struct dri_drawable *draw,
                       enum st_attachment_type statt)
{
   struct dri_context *ctx = dri_get_current();
   struct dri_screen *screen = dri_screen(draw->sPriv);
   struct pipe_screen *pipe_screen = screen->pipe_screen;
   struct pipe_fence_handle *dummy_fence;
   struct pipe_texture *ptex;

   if (!ctx)
      return;			       /* For now */

   ptex = draw->textures[statt];
   if (ptex) {
      dri1_copy_to_front(ctx, ptex, ctx->dPriv, NULL, &dummy_fence);
      pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
   }

   /**
    * FIXME: Do we need swap throttling here?
    */
}

void
dri1_swap_buffers(__DRIdrawable * dPriv)
{
   struct dri_context *ctx = dri_get_current();
   struct dri_drawable *draw = dri_drawable(dPriv);
   struct dri_screen *screen = dri_screen(draw->sPriv);
   struct pipe_screen *pipe_screen = screen->pipe_screen;
   struct pipe_fence_handle *fence;
   struct pipe_texture *ptex;

   assert(__dri1_api_hooks != NULL);

   if (!ctx)
      return;			       /* For now */

   ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
   if (ptex) {
      ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
      fence = dri1_swap_fences_pop_front(draw);
      if (fence) {
	 (void)pipe_screen->fence_finish(pipe_screen, fence, 0);
	 pipe_screen->fence_reference(pipe_screen, &fence, NULL);
      }
      dri1_copy_to_front(ctx, ptex, dPriv, NULL, &fence);
      dri1_swap_fences_push_back(draw, fence);
      pipe_screen->fence_reference(pipe_screen, &fence, NULL);
   }
}

void
dri1_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
{
   struct dri_context *ctx = dri_get_current();
   struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
   struct pipe_screen *pipe_screen = screen->pipe_screen;
   struct drm_clip_rect sub_bbox;
   struct dri_drawable *draw = dri_drawable(dPriv);
   struct pipe_fence_handle *dummy_fence;
   struct pipe_texture *ptex;

   assert(__dri1_api_hooks != NULL);

   if (!ctx)
      return;

   sub_bbox.x1 = x;
   sub_bbox.x2 = x + w;
   sub_bbox.y1 = y;
   sub_bbox.y2 = y + h;

   ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
   if (ptex) {
      ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
      dri1_copy_to_front(ctx, ptex, dPriv, &sub_bbox, &dummy_fence);
      pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
   }
}

/**
 * Allocate framebuffer attachments.
 *
 * During fixed-size operation, the function keeps allocating new attachments
 * as they are requested. Unused attachments are not removed, not until the
 * framebuffer is resized or destroyed.
 */
void
dri1_allocate_textures(struct dri_drawable *drawable,
                       unsigned mask)
{
   struct dri_screen *screen = dri_screen(drawable->sPriv);
   struct pipe_texture templ;
   unsigned width, height;
   boolean resized;
   int i;

   width  = drawable->dPriv->w;
   height = drawable->dPriv->h;

   resized = (drawable->old_w != width ||
              drawable->old_h != height);

   /* remove outdated textures */
   if (resized) {
      for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
         pipe_texture_reference(&drawable->textures[i], NULL);
   }

   memset(&templ, 0, sizeof(templ));
   templ.target = PIPE_TEXTURE_2D;
   templ.width0 = width;
   templ.height0 = height;
   templ.depth0 = 1;
   templ.last_level = 0;

   for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
      enum pipe_format format;
      unsigned tex_usage;

      /* the texture already exists or not requested */
      if (drawable->textures[i] || !(mask & (1 << i))) {
         continue;
      }

      switch (i) {
      case ST_ATTACHMENT_FRONT_LEFT:
      case ST_ATTACHMENT_BACK_LEFT:
      case ST_ATTACHMENT_FRONT_RIGHT:
      case ST_ATTACHMENT_BACK_RIGHT:
         format = drawable->stvis.color_format;
         tex_usage = PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
                     PIPE_TEXTURE_USAGE_RENDER_TARGET;
         break;
      case ST_ATTACHMENT_DEPTH_STENCIL:
         format = drawable->stvis.depth_stencil_format;
         tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
         break;
      default:
         format = PIPE_FORMAT_NONE;
         break;
      }

      if (format != PIPE_FORMAT_NONE) {
         templ.format = format;
         templ.tex_usage = tex_usage;

         drawable->textures[i] =
            screen->pipe_screen->texture_create(screen->pipe_screen, &templ);
      }
   }

   drawable->old_w = width;
   drawable->old_h = height;
}

static void
st_dri_lock(struct pipe_context *pipe)
{
   dri1_lock((struct dri_context *)pipe->priv);
}

static void
st_dri_unlock(struct pipe_context *pipe)
{
   dri1_unlock((struct dri_context *)pipe->priv);
}

static boolean
st_dri_is_locked(struct pipe_context *pipe)
{
   return ((struct dri_context *)pipe->priv)->isLocked;
}

static boolean
st_dri_lost_lock(struct pipe_context *pipe)
{
   return ((struct dri_context *)pipe->priv)->wsLostLock;
}

static void
st_dri_clear_lost_lock(struct pipe_context *pipe)
{
   ((struct dri_context *)pipe->priv)->wsLostLock = FALSE;
}

static struct dri1_api_lock_funcs dri1_lf = {
   .lock = st_dri_lock,
   .unlock = st_dri_unlock,
   .is_locked = st_dri_is_locked,
   .is_lock_lost = st_dri_lost_lock,
   .clear_lost_lock = st_dri_clear_lost_lock
};

/*
 * Backend function for init_screen.
 */

static const __DRIextension *dri1_screen_extensions[] = {
   &driReadDrawableExtension,
   &driCopySubBufferExtension.base,
   &driSwapControlExtension.base,
   &driFrameTrackingExtension.base,
   &driMediaStreamCounterExtension.base,
   NULL
};

struct dri1_api *__dri1_api_hooks = NULL;

static INLINE void
dri1_copy_version(struct dri1_api_version *dst,
		  const struct __DRIversionRec *src)
{
   dst->major = src->major;
   dst->minor = src->minor;
   dst->patch_level = src->patch;
}

const __DRIconfig **
dri1_init_screen(__DRIscreen * sPriv)
{
   struct dri_screen *screen;
   const __DRIconfig **configs;
   struct dri1_create_screen_arg arg;

   screen = CALLOC_STRUCT(dri_screen);
   if (!screen)
      return NULL;

   screen->api = drm_api_create();
   screen->sPriv = sPriv;
   screen->fd = sPriv->fd;
   screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;

   sPriv->private = (void *)screen;
   sPriv->extensions = dri1_screen_extensions;

   arg.base.mode = DRM_CREATE_DRI1;
   arg.lf = &dri1_lf;
   arg.ddx_info = sPriv->pDevPriv;
   arg.ddx_info_size = sPriv->devPrivSize;
   arg.sarea = sPriv->pSAREA;
   dri1_copy_version(&arg.ddx_version, &sPriv->ddx_version);
   dri1_copy_version(&arg.dri_version, &sPriv->dri_version);
   dri1_copy_version(&arg.drm_version, &sPriv->drm_version);
   arg.api = NULL;

   screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);

   if (!screen->pipe_screen || !arg.api) {
      debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
      goto out_no_screen;
   }

   __dri1_api_hooks = arg.api;

   driParseOptionInfo(&screen->optionCache,
		      __driConfigOptions, __driNConfigOptions);

   /**
    * FIXME: If the driver supports format conversion swapbuffer blits, we might
    * want to support other color bit depths than the server is currently
    * using.
    */

   configs = dri_fill_in_modes(screen, sPriv->fbBPP);
   if (!configs)
      goto out_no_configs;

   return configs;
 out_no_configs:
   screen->pipe_screen->destroy(screen->pipe_screen);
 out_no_screen:
   FREE(screen);
   return NULL;
}