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 "dri_st_api.h"
  44 #include "dri1_helper.h"
  45 #include "dri1.h"
  46
  47 static INLINE void
  48 dri1_lock(struct dri_context *ctx)
  49 {
  50    drm_context_t hw_context = ctx->cPriv->hHWContext;
  51    char ret = 0;
  52
  53    DRM_CAS(ctx->lock, hw_context, DRM_LOCK_HELD | hw_context, ret);
  54    if (ret) {
  55       drmGetLock(ctx->sPriv->fd, hw_context, 0);
  56       ctx->stLostLock = TRUE;
  57       ctx->wsLostLock = TRUE;
  58    }
  59    ctx->isLocked = TRUE;
  60 }
  61
  62 static INLINE void
  63 dri1_unlock(struct dri_context *ctx)
  64 {
  65    ctx->isLocked = FALSE;
  66    DRM_UNLOCK(ctx->sPriv->fd, ctx->lock, ctx->cPriv->hHWContext);
  67 }
  68
  69 static void
  70 dri1_update_drawables_locked(struct dri_context *ctx,
  71                              __DRIdrawable * driDrawPriv,
  72                              __DRIdrawable * driReadPriv)
  73 {
  74    if (ctx->stLostLock) {
  75       ctx->stLostLock = FALSE;
  76       if (driDrawPriv == driReadPriv)
  77          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
  78       else
  79          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
  80                                          driReadPriv);
  81    }
  82 }
  83
  84 /**
  85  * This ensures all contexts which bind to a drawable pick up the
  86  * drawable change and signal new buffer state.
  87  */
  88 static void
  89 dri1_propagate_drawable_change(struct dri_context *ctx)
  90 {
  91    __DRIdrawable *dPriv = ctx->dPriv;
  92    __DRIdrawable *rPriv = ctx->rPriv;
  93    struct dri_drawable *draw = dri_drawable(dPriv);
  94    struct dri_drawable *read = dri_drawable(rPriv);
  95    boolean flushed = FALSE;
  96
  97    if (dPriv && draw->texture_stamp != dPriv->lastStamp) {
  98       ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
  99       flushed = TRUE;
 100       ctx->st->notify_invalid_framebuffer(ctx->st, draw->stfb);
 101    }
 102
 103    if (rPriv && dPriv != rPriv && read->texture_stamp != rPriv->lastStamp) {
 104       if (!flushed)
 105          ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 106       ctx->st->notify_invalid_framebuffer(ctx->st, read->stfb);
 107    }
 108 }
 109
 110 static INLINE boolean
 111 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 112                         int dst_x,
 113                         int dst_y,
 114                         const struct drm_clip_rect *src,
 115                         const struct drm_clip_rect *bbox)
 116 {
 117    int xy1;
 118    int xy2;
 119
 120    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 121       (int)bbox->x1 + dst_x;
 122    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 123       (int)bbox->x2 + dst_x;
 124    if (xy1 >= xy2 || xy1 < 0)
 125       return FALSE;
 126
 127    dst->x1 = xy1;
 128    dst->x2 = xy2;
 129
 130    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 131       (int)bbox->y1 + dst_y;
 132    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 133       (int)bbox->y2 + dst_y;
 134    if (xy1 >= xy2 || xy1 < 0)
 135       return FALSE;
 136
 137    dst->y1 = xy1;
 138    dst->y2 = xy2;
 139    return TRUE;
 140 }
 141
 142 static void
 143 dri1_swap_copy(struct pipe_context *pipe,
 144                struct pipe_surface *dst,
 145                struct pipe_surface *src,
 146                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 147 {
 148    struct drm_clip_rect clip;
 149    struct drm_clip_rect *cur;
 150    int i;
 151
 152    cur = dPriv->pClipRects;
 153
 154    for (i = 0; i < dPriv->numClipRects; ++i) {
 155       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 156          if (pipe->surface_copy) {
 157             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 158                                src,
 159                                (int)clip.x1 - dPriv->x,
 160                                (int)clip.y1 - dPriv->y,
 161                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 162          } else {
 163             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 164                               src,
 165                               (int)clip.x1 - dPriv->x,
 166                               (int)clip.y1 - dPriv->y,
 167                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 168          }
 169       }
 170    }
 171 }
 172
 173 static void
 174 dri1_present_texture_locked(__DRIdrawable * dPriv,
 175                             struct pipe_texture *ptex,
 176                             const struct drm_clip_rect *sub_box,
 177                             struct pipe_fence_handle **fence)
 178 {
 179    struct dri_drawable *drawable = dri_drawable(dPriv);
 180    struct dri_screen *screen = dri_screen(drawable->sPriv);
 181    struct pipe_context *pipe;
 182    struct pipe_surface *psurf;
 183    struct drm_clip_rect bbox;
 184    boolean visible = TRUE;
 185
 186    *fence = NULL;
 187
 188    bbox.x1 = 0;
 189    bbox.x2 = ptex->width0;
 190    bbox.y1 = 0;
 191    bbox.y2 = ptex->height0;
 192
 193    if (sub_box)
 194       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 195    if (!visible)
 196       return;
 197
 198    pipe = dri1_get_pipe_context(screen);
 199    psurf = dri1_get_pipe_surface(drawable, ptex);
 200    if (!pipe || !psurf)
 201       return;
 202
 203    if (__dri1_api_hooks->present_locked) {
 204       __dri1_api_hooks->present_locked(pipe, psurf,
 205                                        dPriv->pClipRects, dPriv->numClipRects,
 206                                        dPriv->x, dPriv->y, &bbox, fence);
 207    } else if (__dri1_api_hooks->front_srf_locked) {
 208       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 209
 210       if (front)
 211          dri1_swap_copy(pipe, front, psurf, dPriv, &bbox);
 212
 213       pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, fence);
 214    }
 215 }
 216
 217 static void
 218 dri1_copy_to_front(struct dri_context *ctx,
 219                    struct pipe_texture *ptex,
 220                    __DRIdrawable * dPriv,
 221                    const struct drm_clip_rect *sub_box,
 222                    struct pipe_fence_handle **fence)
 223 {
 224    boolean save_lost_lock;
 225
 226    dri1_lock(ctx);
 227    save_lost_lock = ctx->stLostLock;
 228    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 229
 230    dri1_present_texture_locked(dPriv, ptex, sub_box, fence);
 231
 232    ctx->stLostLock = save_lost_lock;
 233
 234    /**
 235     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 236     */
 237
 238    if (!sub_box)
 239       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 240
 241    dri1_unlock(ctx);
 242    dri1_propagate_drawable_change(ctx);
 243 }
 244
 245 /*
 246  * Backend functions for st_framebuffer interface and swap_buffers.
 247  */
 248
 249 void
 250 dri1_flush_frontbuffer(struct dri_drawable *draw,
 251                        enum st_attachment_type statt)
 252 {
 253    struct dri_context *ctx = dri_get_current();
 254    struct dri_screen *screen = dri_screen(draw->sPriv);
 255    struct pipe_screen *pipe_screen = screen->pipe_screen;
 256    struct pipe_fence_handle *dummy_fence;
 257    struct pipe_texture *ptex;
 258
 259    if (!ctx)
 260       return;                          /* For now */
 261
 262    ptex = draw->textures[statt];
 263    if (ptex) {
 264       dri1_copy_to_front(ctx, ptex, ctx->dPriv, NULL, &dummy_fence);
 265       pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
 266    }
 267
 268    /**
 269     * FIXME: Do we need swap throttling here?
 270     */
 271 }
 272
 273 void
 274 dri1_swap_buffers(__DRIdrawable * dPriv)
 275 {
 276    struct dri_context *ctx = dri_get_current();
 277    struct dri_drawable *draw = dri_drawable(dPriv);
 278    struct dri_screen *screen = dri_screen(draw->sPriv);
 279    struct pipe_screen *pipe_screen = screen->pipe_screen;
 280    struct pipe_fence_handle *fence;
 281    struct pipe_texture *ptex;
 282
 283    assert(__dri1_api_hooks != NULL);
 284
 285    if (!ctx)
 286       return;                          /* For now */
 287
 288    ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
 289    if (ptex) {
 290       ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 291       fence = dri1_swap_fences_pop_front(draw);
 292       if (fence) {
 293          (void)pipe_screen->fence_finish(pipe_screen, fence, 0);
 294          pipe_screen->fence_reference(pipe_screen, &fence, NULL);
 295       }
 296       dri1_copy_to_front(ctx, ptex, dPriv, NULL, &fence);
 297       dri1_swap_fences_push_back(draw, fence);
 298       pipe_screen->fence_reference(pipe_screen, &fence, NULL);
 299    }
 300 }
 301
 302 void
 303 dri1_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 304 {
 305    struct dri_context *ctx = dri_get_current();
 306    struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
 307    struct pipe_screen *pipe_screen = screen->pipe_screen;
 308    struct drm_clip_rect sub_bbox;
 309    struct dri_drawable *draw = dri_drawable(dPriv);
 310    struct pipe_fence_handle *dummy_fence;
 311    struct pipe_texture *ptex;
 312
 313    assert(__dri1_api_hooks != NULL);
 314
 315    if (!ctx)
 316       return;
 317
 318    sub_bbox.x1 = x;
 319    sub_bbox.x2 = x + w;
 320    sub_bbox.y1 = y;
 321    sub_bbox.y2 = y + h;
 322
 323    ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
 324    if (ptex) {
 325       ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 326       dri1_copy_to_front(ctx, ptex, dPriv, &sub_bbox, &dummy_fence);
 327       pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
 328    }
 329 }
 330
 331 /**
 332  * Allocate framebuffer attachments.
 333  *
 334  * During fixed-size operation, the function keeps allocating new attachments
 335  * as they are requested. Unused attachments are not removed, not until the
 336  * framebuffer is resized or destroyed.
 337  */
 338 void
 339 dri1_allocate_textures(struct dri_drawable *drawable,
 340                        unsigned mask)
 341 {
 342    struct dri_screen *screen = dri_screen(drawable->sPriv);
 343    struct pipe_texture templ;
 344    unsigned width, height;
 345    boolean resized;
 346    int i;
 347
 348    width  = drawable->dPriv->w;
 349    height = drawable->dPriv->h;
 350
 351    resized = (drawable->old_w != width ||
 352               drawable->old_h != height);
 353
 354    /* remove outdated textures */
 355    if (resized) {
 356       for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 357          pipe_texture_reference(&drawable->textures[i], NULL);
 358    }
 359
 360    memset(&templ, 0, sizeof(templ));
 361    templ.target = PIPE_TEXTURE_2D;
 362    templ.width0 = width;
 363    templ.height0 = height;
 364    templ.depth0 = 1;
 365    templ.last_level = 0;
 366
 367    for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 368       enum pipe_format format;
 369       unsigned tex_usage;
 370
 371       /* the texture already exists or not requested */
 372       if (drawable->textures[i] || !(mask & (1 << i))) {
 373          continue;
 374       }
 375
 376       switch (i) {
 377       case ST_ATTACHMENT_FRONT_LEFT:
 378       case ST_ATTACHMENT_BACK_LEFT:
 379       case ST_ATTACHMENT_FRONT_RIGHT:
 380       case ST_ATTACHMENT_BACK_RIGHT:
 381          format = drawable->stvis.color_format;
 382          tex_usage = PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 383                      PIPE_TEXTURE_USAGE_RENDER_TARGET;
 384          break;
 385       case ST_ATTACHMENT_DEPTH_STENCIL:
 386          format = drawable->stvis.depth_stencil_format;
 387          tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
 388          break;
 389       default:
 390          format = PIPE_FORMAT_NONE;
 391          break;
 392       }
 393
 394       if (format != PIPE_FORMAT_NONE) {
 395          templ.format = format;
 396          templ.tex_usage = tex_usage;
 397
 398          drawable->textures[i] =
 399             screen->pipe_screen->texture_create(screen->pipe_screen, &templ);
 400       }
 401    }
 402
 403    drawable->old_w = width;
 404    drawable->old_h = height;
 405 }
 406
 407 /*
 408  * Backend function for init_screen.
 409  */
 410
 411 static const __DRIextension *dri1_screen_extensions[] = {
 412    &driReadDrawableExtension,
 413    &driCopySubBufferExtension.base,
 414    &driSwapControlExtension.base,
 415    &driFrameTrackingExtension.base,
 416    &driMediaStreamCounterExtension.base,
 417    NULL
 418 };
 419
 420 static void
 421 st_dri_lock(struct pipe_context *pipe)
 422 {
 423    dri1_lock((struct dri_context *)pipe->priv);
 424 }
 425
 426 static void
 427 st_dri_unlock(struct pipe_context *pipe)
 428 {
 429    dri1_unlock((struct dri_context *)pipe->priv);
 430 }
 431
 432 static boolean
 433 st_dri_is_locked(struct pipe_context *pipe)
 434 {
 435    return ((struct dri_context *)pipe->priv)->isLocked;
 436 }
 437
 438 static boolean
 439 st_dri_lost_lock(struct pipe_context *pipe)
 440 {
 441    return ((struct dri_context *)pipe->priv)->wsLostLock;
 442 }
 443
 444 static void
 445 st_dri_clear_lost_lock(struct pipe_context *pipe)
 446 {
 447    ((struct dri_context *)pipe->priv)->wsLostLock = FALSE;
 448 }
 449
 450 static struct dri1_api_lock_funcs dri1_lf = {
 451    .lock = st_dri_lock,
 452    .unlock = st_dri_unlock,
 453    .is_locked = st_dri_is_locked,
 454    .is_lock_lost = st_dri_lost_lock,
 455    .clear_lost_lock = st_dri_clear_lost_lock
 456 };
 457
 458 static INLINE void
 459 dri1_copy_version(struct dri1_api_version *dst,
 460                   const struct __DRIversionRec *src)
 461 {
 462    dst->major = src->major;
 463    dst->minor = src->minor;
 464    dst->patch_level = src->patch;
 465 }
 466
 467 struct dri1_api *__dri1_api_hooks = NULL;
 468
 469 const __DRIconfig **
 470 dri1_init_screen(__DRIscreen * sPriv)
 471 {
 472    const __DRIconfig **configs;
 473    struct dri_screen *screen;
 474    struct dri1_create_screen_arg arg;
 475
 476    screen = CALLOC_STRUCT(dri_screen);
 477    if (!screen)
 478       return NULL;
 479
 480    screen->api = drm_api_create();
 481    screen->sPriv = sPriv;
 482    screen->fd = sPriv->fd;
 483    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 484
 485    sPriv->private = (void *)screen;
 486    sPriv->extensions = dri1_screen_extensions;
 487
 488    arg.base.mode = DRM_CREATE_DRI1;
 489    arg.lf = &dri1_lf;
 490    arg.ddx_info = sPriv->pDevPriv;
 491    arg.ddx_info_size = sPriv->devPrivSize;
 492    arg.sarea = sPriv->pSAREA;
 493    dri1_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 494    dri1_copy_version(&arg.dri_version, &sPriv->dri_version);
 495    dri1_copy_version(&arg.drm_version, &sPriv->drm_version);
 496    arg.api = NULL;
 497
 498    /**
 499     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 500     * want to support other color bit depths than the server is currently
 501     * using.
 502     */
 503
 504    configs = dri_init_screen_helper(screen, &arg.base, sPriv->fbBPP);
 505    if (!configs)
 506       goto fail;
 507
 508    if (!arg.api) {
 509       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 510       goto fail;
 511    }
 512
 513    __dri1_api_hooks = arg.api;
 514
 515    return configs;
 516 fail:
 517    if (configs)
 518       FREE(configs);
 519    dri_destroy_screen_helper(screen);
 520    FREE(screen);
 521    return NULL;
 522 }