src/gallium/state_trackers/dri/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 #include "util/u_memory.h"
  33 #include "util/u_rect.h"
  34 #include "pipe/p_context.h"
  35 #include "state_tracker/st_context.h"
  36 #include "state_tracker/st_public.h"
  37 #include "state_tracker/dri1_api.h"
  38
  39 #include "dri_screen.h"
  40 #include "dri_context.h"
  41 #include "dri_drawable.h"
  42 #include "dri1.h"
  43
  44 static INLINE void
  45 dri1_lock(struct dri_context *ctx)
  46 {
  47    drm_context_t hw_context = ctx->cPriv->hHWContext;
  48    char ret = 0;
  49
  50    DRM_CAS(ctx->lock, hw_context, DRM_LOCK_HELD | hw_context, ret);
  51    if (ret) {
  52       drmGetLock(ctx->sPriv->fd, hw_context, 0);
  53       ctx->stLostLock = TRUE;
  54       ctx->wsLostLock = TRUE;
  55    }
  56    ctx->isLocked = TRUE;
  57 }
  58
  59 static INLINE void
  60 dri1_unlock(struct dri_context *ctx)
  61 {
  62    ctx->isLocked = FALSE;
  63    DRM_UNLOCK(ctx->sPriv->fd, ctx->lock, ctx->cPriv->hHWContext);
  64 }
  65
  66 static struct pipe_fence_handle *
  67 dri_swap_fences_pop_front(struct dri_drawable *draw)
  68 {
  69    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
  70    struct pipe_fence_handle *fence = NULL;
  71
  72    if (draw->cur_fences >= draw->desired_fences) {
  73       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
  74       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
  75       --draw->cur_fences;
  76       draw->tail &= DRI_SWAP_FENCES_MASK;
  77    }
  78    return fence;
  79 }
  80
  81 static void
  82 dri_swap_fences_push_back(struct dri_drawable *draw,
  83                           struct pipe_fence_handle *fence)
  84 {
  85    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
  86
  87    if (!fence)
  88       return;
  89
  90    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
  91       draw->cur_fences++;
  92       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
  93                               fence);
  94       draw->head &= DRI_SWAP_FENCES_MASK;
  95    }
  96 }
  97
  98 void
  99 dri1_swap_fences_clear(struct dri_drawable *drawable)
 100 {
 101    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 102    struct pipe_fence_handle *fence;
 103
 104    while (drawable->cur_fences) {
 105       fence = dri_swap_fences_pop_front(drawable);
 106       screen->fence_reference(screen, &fence, NULL);
 107    }
 108 }
 109
 110 static void
 111 dri1_update_drawables_locked(struct dri_context *ctx,
 112                              __DRIdrawable * driDrawPriv,
 113                              __DRIdrawable * driReadPriv)
 114 {
 115    if (ctx->stLostLock) {
 116       ctx->stLostLock = FALSE;
 117       if (driDrawPriv == driReadPriv)
 118          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 119       else
 120          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 121                                          driReadPriv);
 122    }
 123 }
 124
 125 /**
 126  * This ensures all contexts which bind to a drawable pick up the
 127  * drawable change and signal new buffer state.
 128  * Calling st_resize_framebuffer for each context may seem like overkill,
 129  * but no new buffers will actually be allocated if the dimensions don't
 130  * change.
 131  */
 132
 133 static void
 134 dri1_propagate_drawable_change(struct dri_context *ctx)
 135 {
 136    __DRIdrawable *dPriv = ctx->dPriv;
 137    __DRIdrawable *rPriv = ctx->rPriv;
 138    boolean flushed = FALSE;
 139
 140    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 141
 142       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 143       flushed = TRUE;
 144       ctx->d_stamp = dPriv->lastStamp;
 145       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 146
 147    }
 148
 149    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 150
 151       if (!flushed)
 152          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 153       ctx->r_stamp = rPriv->lastStamp;
 154       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 155
 156    } else if (rPriv && dPriv == rPriv) {
 157
 158       ctx->r_stamp = ctx->d_stamp;
 159
 160    }
 161 }
 162
 163 void
 164 dri1_update_drawables(struct dri_context *ctx,
 165                       struct dri_drawable *draw, struct dri_drawable *read)
 166 {
 167    dri1_lock(ctx);
 168    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 169    dri1_unlock(ctx);
 170
 171    dri1_propagate_drawable_change(ctx);
 172 }
 173
 174 static INLINE boolean
 175 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 176                         int dst_x,
 177                         int dst_y,
 178                         const struct drm_clip_rect *src,
 179                         const struct drm_clip_rect *bbox)
 180 {
 181    int xy1;
 182    int xy2;
 183
 184    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 185       (int)bbox->x1 + dst_x;
 186    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 187       (int)bbox->x2 + dst_x;
 188    if (xy1 >= xy2 || xy1 < 0)
 189       return FALSE;
 190
 191    dst->x1 = xy1;
 192    dst->x2 = xy2;
 193
 194    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 195       (int)bbox->y1 + dst_y;
 196    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 197       (int)bbox->y2 + dst_y;
 198    if (xy1 >= xy2 || xy1 < 0)
 199       return FALSE;
 200
 201    dst->y1 = xy1;
 202    dst->y2 = xy2;
 203    return TRUE;
 204 }
 205
 206 static void
 207 dri1_swap_copy(struct dri_context *ctx,
 208                struct pipe_surface *dst,
 209                struct pipe_surface *src,
 210                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 211 {
 212    struct pipe_context *pipe = ctx->pipe;
 213    struct drm_clip_rect clip;
 214    struct drm_clip_rect *cur;
 215    int i;
 216
 217    cur = dPriv->pClipRects;
 218
 219    for (i = 0; i < dPriv->numClipRects; ++i) {
 220       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 221          if (pipe->surface_copy) {
 222             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 223                                src,
 224                                (int)clip.x1 - dPriv->x,
 225                                (int)clip.y1 - dPriv->y,
 226                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 227          } else {
 228             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 229                               src,
 230                               (int)clip.x1 - dPriv->x,
 231                               (int)clip.y1 - dPriv->y,
 232                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 233          }
 234       }
 235    }
 236 }
 237
 238 static void
 239 dri1_copy_to_front(struct dri_context *ctx,
 240                    struct pipe_surface *surf,
 241                    __DRIdrawable * dPriv,
 242                    const struct drm_clip_rect *sub_box,
 243                    struct pipe_fence_handle **fence)
 244 {
 245    struct pipe_context *pipe = ctx->pipe;
 246    boolean save_lost_lock;
 247    uint cur_w;
 248    uint cur_h;
 249    struct drm_clip_rect bbox;
 250    boolean visible = TRUE;
 251
 252    *fence = NULL;
 253
 254    dri1_lock(ctx);
 255    save_lost_lock = ctx->stLostLock;
 256    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 257    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 258
 259    bbox.x1 = 0;
 260    bbox.x2 = cur_w;
 261    bbox.y1 = 0;
 262    bbox.y2 = cur_h;
 263
 264    if (sub_box)
 265       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 266
 267    if (visible && __dri1_api_hooks->present_locked) {
 268
 269       __dri1_api_hooks->present_locked(pipe,
 270                                        surf,
 271                                        dPriv->pClipRects,
 272                                        dPriv->numClipRects,
 273                                        dPriv->x, dPriv->y, &bbox, fence);
 274
 275    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 276
 277       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 278
 279       if (front)
 280          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 281
 282       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 283    }
 284
 285    ctx->stLostLock = save_lost_lock;
 286
 287    /**
 288     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 289     */
 290
 291    if (!sub_box)
 292       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 293
 294    dri1_unlock(ctx);
 295    dri1_propagate_drawable_change(ctx);
 296 }
 297
 298 void
 299 dri1_flush_frontbuffer(struct pipe_screen *screen,
 300                        struct pipe_surface *surf, void *context_private)
 301 {
 302    struct dri_context *ctx = (struct dri_context *)context_private;
 303    struct pipe_fence_handle *dummy_fence;
 304
 305    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 306    screen->fence_reference(screen, &dummy_fence, NULL);
 307
 308    /**
 309     * FIXME: Do we need swap throttling here?
 310     */
 311 }
 312
 313 void
 314 dri1_swap_buffers(__DRIdrawable * dPriv)
 315 {
 316    struct dri_context *ctx;
 317    struct pipe_surface *back_surf;
 318    struct dri_drawable *draw = dri_drawable(dPriv);
 319    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 320    struct pipe_fence_handle *fence;
 321    struct st_context *st = st_get_current();
 322
 323    assert(__dri1_api_hooks != NULL);
 324
 325    if (!st)
 326       return;                          /* For now */
 327
 328    ctx = (struct dri_context *)st->pipe->priv;
 329
 330    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 331    if (back_surf) {
 332       st_notify_swapbuffers(draw->stfb);
 333       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 334       fence = dri_swap_fences_pop_front(draw);
 335       if (fence) {
 336          (void)screen->fence_finish(screen, fence, 0);
 337          screen->fence_reference(screen, &fence, NULL);
 338       }
 339       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 340       dri_swap_fences_push_back(draw, fence);
 341       screen->fence_reference(screen, &fence, NULL);
 342    }
 343 }
 344
 345 void
 346 dri1_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 347 {
 348    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 349    struct drm_clip_rect sub_bbox;
 350    struct dri_context *ctx;
 351    struct pipe_surface *back_surf;
 352    struct dri_drawable *draw = dri_drawable(dPriv);
 353    struct pipe_fence_handle *dummy_fence;
 354    struct st_context *st = st_get_current();
 355
 356    assert(__dri1_api_hooks != NULL);
 357
 358    if (!st)
 359       return;
 360
 361    ctx = (struct dri_context *)st->pipe->priv;
 362
 363    sub_bbox.x1 = x;
 364    sub_bbox.x2 = x + w;
 365    sub_bbox.y1 = y;
 366    sub_bbox.y2 = y + h;
 367
 368    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 369    if (back_surf) {
 370       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 371       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 372       screen->fence_reference(screen, &dummy_fence, NULL);
 373    }
 374 }
 375
 376 static void
 377 st_dri_lock(struct pipe_context *pipe)
 378 {
 379    dri1_lock((struct dri_context *)pipe->priv);
 380 }
 381
 382 static void
 383 st_dri_unlock(struct pipe_context *pipe)
 384 {
 385    dri1_unlock((struct dri_context *)pipe->priv);
 386 }
 387
 388 static boolean
 389 st_dri_is_locked(struct pipe_context *pipe)
 390 {
 391    return ((struct dri_context *)pipe->priv)->isLocked;
 392 }
 393
 394 static boolean
 395 st_dri_lost_lock(struct pipe_context *pipe)
 396 {
 397    return ((struct dri_context *)pipe->priv)->wsLostLock;
 398 }
 399
 400 static void
 401 st_dri_clear_lost_lock(struct pipe_context *pipe)
 402 {
 403    ((struct dri_context *)pipe->priv)->wsLostLock = FALSE;
 404 }
 405
 406 static struct dri1_api_lock_funcs dri1_lf = {
 407    .lock = st_dri_lock,
 408    .unlock = st_dri_unlock,
 409    .is_locked = st_dri_is_locked,
 410    .is_lock_lost = st_dri_lost_lock,
 411    .clear_lost_lock = st_dri_clear_lost_lock
 412 };
 413
 414 static const __DRIextension *dri1_screen_extensions[] = {
 415    &driReadDrawableExtension,
 416    &driCopySubBufferExtension.base,
 417    &driSwapControlExtension.base,
 418    &driFrameTrackingExtension.base,
 419    &driMediaStreamCounterExtension.base,
 420    NULL
 421 };
 422
 423 struct dri1_api *__dri1_api_hooks = NULL;
 424
 425 static INLINE void
 426 dri1_copy_version(struct dri1_api_version *dst,
 427                   const struct __DRIversionRec *src)
 428 {
 429    dst->major = src->major;
 430    dst->minor = src->minor;
 431    dst->patch_level = src->patch;
 432 }
 433
 434 const __DRIconfig **
 435 dri1_init_screen(__DRIscreen * sPriv)
 436 {
 437    struct dri_screen *screen;
 438    const __DRIconfig **configs;
 439    struct dri1_create_screen_arg arg;
 440
 441    screen = CALLOC_STRUCT(dri_screen);
 442    if (!screen)
 443       return NULL;
 444
 445    screen->api = drm_api_create();
 446    screen->sPriv = sPriv;
 447    screen->fd = sPriv->fd;
 448    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 449
 450    sPriv->private = (void *)screen;
 451    sPriv->extensions = dri1_screen_extensions;
 452
 453    arg.base.mode = DRM_CREATE_DRI1;
 454    arg.lf = &dri1_lf;
 455    arg.ddx_info = sPriv->pDevPriv;
 456    arg.ddx_info_size = sPriv->devPrivSize;
 457    arg.sarea = sPriv->pSAREA;
 458    dri1_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 459    dri1_copy_version(&arg.dri_version, &sPriv->dri_version);
 460    dri1_copy_version(&arg.drm_version, &sPriv->drm_version);
 461    arg.api = NULL;
 462
 463    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 464
 465    if (!screen->pipe_screen || !arg.api) {
 466       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 467       goto out_no_screen;
 468    }
 469
 470    __dri1_api_hooks = arg.api;
 471
 472    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 473    driParseOptionInfo(&screen->optionCache,
 474                       __driConfigOptions, __driNConfigOptions);
 475
 476    /**
 477     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 478     * want to support other color bit depths than the server is currently
 479     * using.
 480     */
 481
 482    configs = dri_fill_in_modes(screen, sPriv->fbBPP);
 483    if (!configs)
 484       goto out_no_configs;
 485
 486    return configs;
 487  out_no_configs:
 488    screen->pipe_screen->destroy(screen->pipe_screen);
 489  out_no_screen:
 490    FREE(screen);
 491    return NULL;
 492 }