src/gallium/state_trackers/dri/drm/dri1.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009, VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 /*
  28  * Author: Keith Whitwell <keithw@vmware.com>
  29  * Author: Jakob Bornecrantz <wallbraker@gmail.com>
  30  */
  31
  32 /* XXX DRI1 is untested after the switch to st_api.h */
  33
  34 #include "util/u_memory.h"
  35 #include "util/u_rect.h"
  36 #include "util/u_inlines.h"
  37 #include "pipe/p_context.h"
  38 #include "state_tracker/dri1_api.h"
  39
  40 #include "dri_screen.h"
  41 #include "dri_context.h"
  42 #include "dri_drawable.h"
  43 #include "dri1_helper.h"
  44 #include "dri1.h"
  45
  46 static INLINE void
  47 dri1_lock(struct dri_context *ctx)
  48 {
  49    drm_context_t hw_context = ctx->cPriv->hHWContext;
  50    char ret = 0;
  51
  52    DRM_CAS(ctx->lock, hw_context, DRM_LOCK_HELD | hw_context, ret);
  53    if (ret) {
  54       drmGetLock(ctx->sPriv->fd, hw_context, 0);
  55       ctx->stLostLock = TRUE;
  56       ctx->wsLostLock = TRUE;
  57    }
  58    ctx->isLocked = TRUE;
  59 }
  60
  61 static INLINE void
  62 dri1_unlock(struct dri_context *ctx)
  63 {
  64    ctx->isLocked = FALSE;
  65    DRM_UNLOCK(ctx->sPriv->fd, ctx->lock, ctx->cPriv->hHWContext);
  66 }
  67
  68 static void
  69 dri1_update_drawables_locked(struct dri_context *ctx,
  70                              __DRIdrawable * driDrawPriv,
  71                              __DRIdrawable * driReadPriv)
  72 {
  73    if (ctx->stLostLock) {
  74       ctx->stLostLock = FALSE;
  75       if (driDrawPriv == driReadPriv)
  76          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
  77       else
  78          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
  79                                          driReadPriv);
  80    }
  81 }
  82
  83 /**
  84  * This ensures all contexts which bind to a drawable pick up the
  85  * drawable change and signal new buffer state.
  86  */
  87 static void
  88 dri1_propagate_drawable_change(struct dri_context *ctx)
  89 {
  90    __DRIdrawable *dPriv = ctx->dPriv;
  91    __DRIdrawable *rPriv = ctx->rPriv;
  92    struct dri_drawable *draw;
  93    struct dri_drawable *read;
  94    boolean flushed = FALSE;
  95
  96    if (dPriv) {
  97       draw = dri_drawable(dPriv);
  98    }
  99
 100    if (rPriv) {
 101       read = dri_drawable(rPriv);
 102    }
 103
 104    if (dPriv && draw->texture_stamp != dPriv->lastStamp) {
 105       ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 106       flushed = TRUE;
 107       ctx->st->notify_invalid_framebuffer(ctx->st, &draw->base);
 108    }
 109
 110    if (rPriv && dPriv != rPriv && read->texture_stamp != rPriv->lastStamp) {
 111       if (!flushed)
 112          ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 113       ctx->st->notify_invalid_framebuffer(ctx->st, &read->base);
 114    }
 115 }
 116
 117 static INLINE boolean
 118 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 119                         int dst_x,
 120                         int dst_y,
 121                         const struct drm_clip_rect *src,
 122                         const struct drm_clip_rect *bbox)
 123 {
 124    int xy1;
 125    int xy2;
 126
 127    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 128       (int)bbox->x1 + dst_x;
 129    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 130       (int)bbox->x2 + dst_x;
 131    if (xy1 >= xy2 || xy1 < 0)
 132       return FALSE;
 133
 134    dst->x1 = xy1;
 135    dst->x2 = xy2;
 136
 137    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 138       (int)bbox->y1 + dst_y;
 139    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 140       (int)bbox->y2 + dst_y;
 141    if (xy1 >= xy2 || xy1 < 0)
 142       return FALSE;
 143
 144    dst->y1 = xy1;
 145    dst->y2 = xy2;
 146    return TRUE;
 147 }
 148
 149 static void
 150 dri1_swap_copy(struct pipe_context *pipe,
 151                struct pipe_surface *dst,
 152                struct pipe_surface *src,
 153                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 154 {
 155    struct drm_clip_rect clip;
 156    struct drm_clip_rect *cur;
 157    int i;
 158
 159    cur = dPriv->pClipRects;
 160
 161    for (i = 0; i < dPriv->numClipRects; ++i) {
 162       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 163          if (pipe->surface_copy) {
 164             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 165                                src,
 166                                (int)clip.x1 - dPriv->x,
 167                                (int)clip.y1 - dPriv->y,
 168                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 169          } else {
 170             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 171                               src,
 172                               (int)clip.x1 - dPriv->x,
 173                               (int)clip.y1 - dPriv->y,
 174                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 175          }
 176       }
 177    }
 178 }
 179
 180 static void
 181 dri1_present_texture_locked(__DRIdrawable * dPriv,
 182                             struct pipe_resource *ptex,
 183                             const struct drm_clip_rect *sub_box,
 184                             struct pipe_fence_handle **fence)
 185 {
 186    struct dri_drawable *drawable = dri_drawable(dPriv);
 187    struct dri_screen *screen = dri_screen(drawable->sPriv);
 188    struct pipe_context *pipe;
 189    struct pipe_surface *psurf;
 190    struct drm_clip_rect bbox;
 191    boolean visible = TRUE;
 192
 193    *fence = NULL;
 194
 195    bbox.x1 = 0;
 196    bbox.x2 = ptex->width0;
 197    bbox.y1 = 0;
 198    bbox.y2 = ptex->height0;
 199
 200    if (sub_box)
 201       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 202    if (!visible)
 203       return;
 204
 205    pipe = dri1_get_pipe_context(screen);
 206    psurf = dri1_get_pipe_surface(drawable, ptex);
 207    if (!pipe || !psurf)
 208       return;
 209
 210    if (__dri1_api_hooks->present_locked) {
 211       __dri1_api_hooks->present_locked(pipe, psurf,
 212                                        dPriv->pClipRects, dPriv->numClipRects,
 213                                        dPriv->x, dPriv->y, &bbox, fence);
 214    } else if (__dri1_api_hooks->front_srf_locked) {
 215       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 216
 217       if (front)
 218          dri1_swap_copy(pipe, front, psurf, dPriv, &bbox);
 219
 220       pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, fence);
 221    }
 222 }
 223
 224 static void
 225 dri1_copy_to_front(struct dri_context *ctx,
 226                    struct pipe_resource *ptex,
 227                    __DRIdrawable * dPriv,
 228                    const struct drm_clip_rect *sub_box,
 229                    struct pipe_fence_handle **fence)
 230 {
 231    boolean save_lost_lock;
 232
 233    dri1_lock(ctx);
 234    save_lost_lock = ctx->stLostLock;
 235    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 236
 237    dri1_present_texture_locked(dPriv, ptex, sub_box, fence);
 238
 239    ctx->stLostLock = save_lost_lock;
 240
 241    /**
 242     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 243     */
 244
 245    if (!sub_box)
 246       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 247
 248    dri1_unlock(ctx);
 249    dri1_propagate_drawable_change(ctx);
 250 }
 251
 252 /*
 253  * Backend functions for st_framebuffer interface and swap_buffers.
 254  */
 255
 256 static void
 257 dri1_flush_frontbuffer(struct dri_drawable *draw,
 258                        enum st_attachment_type statt)
 259 {
 260    struct dri_context *ctx = dri_get_current(draw->sPriv);
 261    struct dri_screen *screen = dri_screen(draw->sPriv);
 262    struct pipe_screen *pipe_screen = screen->base.screen;
 263    struct pipe_fence_handle *dummy_fence;
 264    struct pipe_resource *ptex;
 265
 266    if (!ctx)
 267       return;                          /* For now */
 268
 269    ptex = draw->textures[statt];
 270    if (ptex) {
 271       dri1_copy_to_front(ctx, ptex, ctx->dPriv, NULL, &dummy_fence);
 272       pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
 273    }
 274
 275    /**
 276     * FIXME: Do we need swap throttling here?
 277     */
 278 }
 279
 280 void
 281 dri1_swap_buffers(__DRIdrawable * dPriv)
 282 {
 283    struct dri_drawable *draw = dri_drawable(dPriv);
 284    struct dri_context *ctx = dri_get_current(draw->sPriv);
 285    struct dri_screen *screen = dri_screen(draw->sPriv);
 286    struct pipe_screen *pipe_screen = screen->base.screen;
 287    struct pipe_fence_handle *fence;
 288    struct pipe_resource *ptex;
 289
 290    assert(__dri1_api_hooks != NULL);
 291
 292    if (!ctx)
 293       return;                          /* For now */
 294
 295    ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
 296    if (ptex) {
 297       ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 298       fence = dri1_swap_fences_pop_front(draw);
 299       if (fence) {
 300          (void)pipe_screen->fence_finish(pipe_screen, fence, 0);
 301          pipe_screen->fence_reference(pipe_screen, &fence, NULL);
 302       }
 303       dri1_copy_to_front(ctx, ptex, dPriv, NULL, &fence);
 304       dri1_swap_fences_push_back(draw, fence);
 305       pipe_screen->fence_reference(pipe_screen, &fence, NULL);
 306    }
 307 }
 308
 309 void
 310 dri1_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 311 {
 312    struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
 313    struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
 314    struct pipe_screen *pipe_screen = screen->base.screen;
 315    struct drm_clip_rect sub_bbox;
 316    struct dri_drawable *draw = dri_drawable(dPriv);
 317    struct pipe_fence_handle *dummy_fence;
 318    struct pipe_resource *ptex;
 319
 320    assert(__dri1_api_hooks != NULL);
 321
 322    if (!ctx)
 323       return;
 324
 325    sub_bbox.x1 = x;
 326    sub_bbox.x2 = x + w;
 327    sub_bbox.y1 = y;
 328    sub_bbox.y2 = y + h;
 329
 330    ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
 331    if (ptex) {
 332       ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 333       dri1_copy_to_front(ctx, ptex, dPriv, &sub_bbox, &dummy_fence);
 334       pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
 335    }
 336 }
 337
 338 /**
 339  * Allocate framebuffer attachments.
 340  *
 341  * During fixed-size operation, the function keeps allocating new attachments
 342  * as they are requested. Unused attachments are not removed, not until the
 343  * framebuffer is resized or destroyed.
 344  */
 345 static void
 346 dri1_allocate_textures(struct dri_drawable *drawable,
 347                        const enum st_attachment_type *statts,
 348                        unsigned count)
 349 {
 350    struct dri_screen *screen = dri_screen(drawable->sPriv);
 351    struct pipe_resource templ;
 352    unsigned width, height;
 353    boolean resized;
 354    int i;
 355
 356    width  = drawable->dPriv->w;
 357    height = drawable->dPriv->h;
 358
 359    resized = (drawable->old_w != width ||
 360               drawable->old_h != height);
 361
 362    /* remove outdated textures */
 363    if (resized) {
 364       for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 365          pipe_resource_reference(&drawable->textures[i], NULL);
 366    }
 367
 368    memset(&templ, 0, sizeof(templ));
 369    templ.target = PIPE_TEXTURE_2D;
 370    templ.width0 = width;
 371    templ.height0 = height;
 372    templ.depth0 = 1;
 373    templ.last_level = 0;
 374
 375    for (i = 0; i < count; i++) {
 376       enum pipe_format format;
 377       unsigned bind;
 378
 379       /* the texture already exists */
 380       if (drawable->textures[statts[i]])
 381          continue;
 382
 383       dri_drawable_get_format(drawable, statts[i], &format, &bind);
 384
 385       if (format == PIPE_FORMAT_NONE)
 386          continue;
 387
 388       templ.format = format;
 389       templ.bind = bind;
 390
 391       drawable->textures[statts[i]] =
 392          screen->base.screen->resource_create(screen->base.screen, &templ);
 393    }
 394
 395    drawable->old_w = width;
 396    drawable->old_h = height;
 397 }
 398
 399 /*
 400  * Backend function for init_screen.
 401  */
 402
 403 static const __DRIextension *dri1_screen_extensions[] = {
 404    &driReadDrawableExtension,
 405    &driCopySubBufferExtension.base,
 406    &driSwapControlExtension.base,
 407    &driFrameTrackingExtension.base,
 408    &driMediaStreamCounterExtension.base,
 409    NULL
 410 };
 411
 412 static void
 413 st_dri_lock(struct pipe_context *pipe)
 414 {
 415    dri1_lock((struct dri_context *)pipe->priv);
 416 }
 417
 418 static void
 419 st_dri_unlock(struct pipe_context *pipe)
 420 {
 421    dri1_unlock((struct dri_context *)pipe->priv);
 422 }
 423
 424 static boolean
 425 st_dri_is_locked(struct pipe_context *pipe)
 426 {
 427    return ((struct dri_context *)pipe->priv)->isLocked;
 428 }
 429
 430 static boolean
 431 st_dri_lost_lock(struct pipe_context *pipe)
 432 {
 433    return ((struct dri_context *)pipe->priv)->wsLostLock;
 434 }
 435
 436 static void
 437 st_dri_clear_lost_lock(struct pipe_context *pipe)
 438 {
 439    ((struct dri_context *)pipe->priv)->wsLostLock = FALSE;
 440 }
 441
 442 static struct dri1_api_lock_funcs dri1_lf = {
 443    .lock = st_dri_lock,
 444    .unlock = st_dri_unlock,
 445    .is_locked = st_dri_is_locked,
 446    .is_lock_lost = st_dri_lost_lock,
 447    .clear_lost_lock = st_dri_clear_lost_lock
 448 };
 449
 450 static INLINE void
 451 dri1_copy_version(struct dri1_api_version *dst,
 452                   const struct __DRIversionRec *src)
 453 {
 454    dst->major = src->major;
 455    dst->minor = src->minor;
 456    dst->patch_level = src->patch;
 457 }
 458
 459 struct dri1_api *__dri1_api_hooks = NULL;
 460
 461 const __DRIconfig **
 462 dri1_init_screen(__DRIscreen * sPriv)
 463 {
 464    const __DRIconfig **configs;
 465    struct pipe_screen *pscreen;
 466    struct dri_screen *screen;
 467    struct dri1_create_screen_arg arg;
 468
 469    screen = CALLOC_STRUCT(dri_screen);
 470    if (!screen)
 471       return NULL;
 472
 473    screen->api = drm_api_create();
 474    screen->sPriv = sPriv;
 475    screen->fd = sPriv->fd;
 476    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 477    screen->allocate_textures = dri1_allocate_textures;
 478    screen->flush_frontbuffer = dri1_flush_frontbuffer;
 479
 480    sPriv->private = (void *)screen;
 481    sPriv->extensions = dri1_screen_extensions;
 482
 483    arg.base.mode = DRM_CREATE_DRI1;
 484    arg.lf = &dri1_lf;
 485    arg.ddx_info = sPriv->pDevPriv;
 486    arg.ddx_info_size = sPriv->devPrivSize;
 487    arg.sarea = sPriv->pSAREA;
 488    dri1_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 489    dri1_copy_version(&arg.dri_version, &sPriv->dri_version);
 490    dri1_copy_version(&arg.drm_version, &sPriv->drm_version);
 491    arg.api = NULL;
 492
 493    /**
 494     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 495     * want to support other color bit depths than the server is currently
 496     * using.
 497     */
 498
 499    pscreen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 500    /* dri_init_screen_helper checks pscreen for us */
 501
 502    configs = dri_init_screen_helper(screen, pscreen, sPriv->fbBPP);
 503    if (!configs)
 504       goto fail;
 505
 506    if (!arg.api) {
 507       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 508       goto fail;
 509    }
 510
 511    __dri1_api_hooks = arg.api;
 512
 513    return configs;
 514 fail:
 515    if (configs)
 516       FREE(configs);
 517    dri_destroy_screen_helper(screen);
 518    FREE(screen);
 519    return NULL;
 520 }