src/gallium/state_trackers/dri/drisw.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009, VMware, Inc.
   4  * All Rights Reserved.
   5  * Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * 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
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 #include "util/format/u_format.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_inlines.h"
  32 #include "util/u_box.h"
  33 #include "pipe/p_context.h"
  34 #include "pipe-loader/pipe_loader.h"
  35 #include "state_tracker/drisw_api.h"
  36 #include "state_tracker/st_context.h"
  37
  38 #include "dri_screen.h"
  39 #include "dri_context.h"
  40 #include "dri_drawable.h"
  41 #include "dri_helpers.h"
  42 #include "dri_query_renderer.h"
  43
  44 DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present, "SWRAST_NO_PRESENT", FALSE);
  45
  46 static inline void
  47 get_drawable_info(__DRIdrawable *dPriv, int *x, int *y, int *w, int *h)
  48 {
  49    __DRIscreen *sPriv = dPriv->driScreenPriv;
  50    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  51
  52    loader->getDrawableInfo(dPriv,
  53                            x, y, w, h,
  54                            dPriv->loaderPrivate);
  55 }
  56
  57 static inline void
  58 put_image(__DRIdrawable *dPriv, void *data, unsigned width, unsigned height)
  59 {
  60    __DRIscreen *sPriv = dPriv->driScreenPriv;
  61    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  62
  63    loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
  64                     0, 0, width, height,
  65                     data, dPriv->loaderPrivate);
  66 }
  67
  68 static inline void
  69 put_image2(__DRIdrawable *dPriv, void *data, int x, int y,
  70            unsigned width, unsigned height, unsigned stride)
  71 {
  72    __DRIscreen *sPriv = dPriv->driScreenPriv;
  73    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  74
  75    loader->putImage2(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
  76                      x, y, width, height, stride,
  77                      data, dPriv->loaderPrivate);
  78 }
  79
  80 static inline void
  81 put_image_shm(__DRIdrawable *dPriv, int shmid, char *shmaddr,
  82               unsigned offset, unsigned offset_x, int x, int y,
  83               unsigned width, unsigned height, unsigned stride)
  84 {
  85    __DRIscreen *sPriv = dPriv->driScreenPriv;
  86    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  87
  88    /* if we have the newer interface, don't have to add the offset_x here. */
  89    if (loader->base.version > 4 && loader->putImageShm2)
  90      loader->putImageShm2(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
  91                           x, y, width, height, stride,
  92                           shmid, shmaddr, offset, dPriv->loaderPrivate);
  93    else
  94      loader->putImageShm(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
  95                          x, y, width, height, stride,
  96                          shmid, shmaddr, offset + offset_x, dPriv->loaderPrivate);
  97 }
  98
  99 static inline void
 100 get_image(__DRIdrawable *dPriv, int x, int y, int width, int height, void *data)
 101 {
 102    __DRIscreen *sPriv = dPriv->driScreenPriv;
 103    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
 104
 105    loader->getImage(dPriv,
 106                     x, y, width, height,
 107                     data, dPriv->loaderPrivate);
 108 }
 109
 110 static inline void
 111 get_image2(__DRIdrawable *dPriv, int x, int y, int width, int height, int stride, void *data)
 112 {
 113    __DRIscreen *sPriv = dPriv->driScreenPriv;
 114    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
 115
 116    /* getImage2 support is only in version 3 or newer */
 117    if (loader->base.version < 3)
 118       return;
 119
 120    loader->getImage2(dPriv,
 121                      x, y, width, height, stride,
 122                      data, dPriv->loaderPrivate);
 123 }
 124
 125 static inline bool
 126 get_image_shm(__DRIdrawable *dPriv, int x, int y, int width, int height,
 127               struct pipe_resource *res)
 128 {
 129    __DRIscreen *sPriv = dPriv->driScreenPriv;
 130    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
 131    struct winsys_handle whandle;
 132
 133    whandle.type = WINSYS_HANDLE_TYPE_SHMID;
 134
 135    if (loader->base.version < 4 || !loader->getImageShm)
 136       return FALSE;
 137
 138    if (!res->screen->resource_get_handle(res->screen, NULL, res, &whandle, PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE))
 139       return FALSE;
 140
 141    if (loader->base.version > 5 && loader->getImageShm2)
 142       return loader->getImageShm2(dPriv, x, y, width, height, whandle.handle, dPriv->loaderPrivate);
 143
 144    loader->getImageShm(dPriv, x, y, width, height, whandle.handle, dPriv->loaderPrivate);
 145    return TRUE;
 146 }
 147
 148 static void
 149 drisw_update_drawable_info(struct dri_drawable *drawable)
 150 {
 151    __DRIdrawable *dPriv = drawable->dPriv;
 152    int x, y;
 153
 154    get_drawable_info(dPriv, &x, &y, &dPriv->w, &dPriv->h);
 155 }
 156
 157 static void
 158 drisw_get_image(struct dri_drawable *drawable,
 159                 int x, int y, unsigned width, unsigned height, unsigned stride,
 160                 void *data)
 161 {
 162    __DRIdrawable *dPriv = drawable->dPriv;
 163    int draw_x, draw_y, draw_w, draw_h;
 164
 165    get_drawable_info(dPriv, &draw_x, &draw_y, &draw_w, &draw_h);
 166    get_image2(dPriv, x, y, draw_w, draw_h, stride, data);
 167 }
 168
 169 static void
 170 drisw_put_image(struct dri_drawable *drawable,
 171                 void *data, unsigned width, unsigned height)
 172 {
 173    __DRIdrawable *dPriv = drawable->dPriv;
 174
 175    put_image(dPriv, data, width, height);
 176 }
 177
 178 static void
 179 drisw_put_image2(struct dri_drawable *drawable,
 180                  void *data, int x, int y, unsigned width, unsigned height,
 181                  unsigned stride)
 182 {
 183    __DRIdrawable *dPriv = drawable->dPriv;
 184
 185    put_image2(dPriv, data, x, y, width, height, stride);
 186 }
 187
 188 static inline void
 189 drisw_put_image_shm(struct dri_drawable *drawable,
 190                     int shmid, char *shmaddr, unsigned offset,
 191                     unsigned offset_x,
 192                     int x, int y, unsigned width, unsigned height,
 193                     unsigned stride)
 194 {
 195    __DRIdrawable *dPriv = drawable->dPriv;
 196
 197    put_image_shm(dPriv, shmid, shmaddr, offset, offset_x, x, y, width, height, stride);
 198 }
 199
 200 static inline void
 201 drisw_present_texture(__DRIdrawable *dPriv,
 202                       struct pipe_resource *ptex, struct pipe_box *sub_box)
 203 {
 204    struct dri_drawable *drawable = dri_drawable(dPriv);
 205    struct dri_screen *screen = dri_screen(drawable->sPriv);
 206
 207    if (screen->swrast_no_present)
 208       return;
 209
 210    screen->base.screen->flush_frontbuffer(screen->base.screen, ptex, 0, 0, drawable, sub_box);
 211 }
 212
 213 static inline void
 214 drisw_invalidate_drawable(__DRIdrawable *dPriv)
 215 {
 216    struct dri_drawable *drawable = dri_drawable(dPriv);
 217
 218    drawable->texture_stamp = dPriv->lastStamp - 1;
 219
 220    p_atomic_inc(&drawable->base.stamp);
 221 }
 222
 223 static inline void
 224 drisw_copy_to_front(__DRIdrawable * dPriv,
 225                     struct pipe_resource *ptex)
 226 {
 227    drisw_present_texture(dPriv, ptex, NULL);
 228
 229    drisw_invalidate_drawable(dPriv);
 230 }
 231
 232 /*
 233  * Backend functions for st_framebuffer interface and swap_buffers.
 234  */
 235
 236 static void
 237 drisw_swap_buffers(__DRIdrawable *dPriv)
 238 {
 239    struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
 240    struct dri_drawable *drawable = dri_drawable(dPriv);
 241    struct pipe_resource *ptex;
 242
 243    if (!ctx)
 244       return;
 245
 246    ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 247
 248    if (ptex) {
 249       if (ctx->pp)
 250          pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
 251
 252       if (ctx->hud)
 253          hud_run(ctx->hud, ctx->st->cso_context, ptex);
 254
 255       ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL, NULL, NULL);
 256
 257       drisw_copy_to_front(dPriv, ptex);
 258    }
 259 }
 260
 261 static void
 262 drisw_copy_sub_buffer(__DRIdrawable *dPriv, int x, int y,
 263                       int w, int h)
 264 {
 265    struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
 266    struct dri_drawable *drawable = dri_drawable(dPriv);
 267    struct pipe_resource *ptex;
 268    struct pipe_box box;
 269    if (!ctx)
 270       return;
 271
 272    ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 273
 274    if (ptex) {
 275       if (ctx->pp && drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL])
 276          pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
 277
 278       ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL, NULL, NULL);
 279
 280       u_box_2d(x, dPriv->h - y - h, w, h, &box);
 281       drisw_present_texture(dPriv, ptex, &box);
 282    }
 283 }
 284
 285 static void
 286 drisw_flush_frontbuffer(struct dri_context *ctx,
 287                         struct dri_drawable *drawable,
 288                         enum st_attachment_type statt)
 289 {
 290    struct pipe_resource *ptex;
 291
 292    if (!ctx)
 293       return;
 294
 295    ptex = drawable->textures[statt];
 296
 297    if (ptex) {
 298       drisw_copy_to_front(ctx->dPriv, ptex);
 299    }
 300 }
 301
 302 /**
 303  * Allocate framebuffer attachments.
 304  *
 305  * During fixed-size operation, the function keeps allocating new attachments
 306  * as they are requested. Unused attachments are not removed, not until the
 307  * framebuffer is resized or destroyed.
 308  */
 309 static void
 310 drisw_allocate_textures(struct dri_context *stctx,
 311                         struct dri_drawable *drawable,
 312                         const enum st_attachment_type *statts,
 313                         unsigned count)
 314 {
 315    struct dri_screen *screen = dri_screen(drawable->sPriv);
 316    const __DRIswrastLoaderExtension *loader = drawable->dPriv->driScreenPriv->swrast_loader;
 317    struct pipe_resource templ;
 318    unsigned width, height;
 319    boolean resized;
 320    unsigned i;
 321
 322    width  = drawable->dPriv->w;
 323    height = drawable->dPriv->h;
 324
 325    resized = (drawable->old_w != width ||
 326               drawable->old_h != height);
 327
 328    /* remove outdated textures */
 329    if (resized) {
 330       for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 331          pipe_resource_reference(&drawable->textures[i], NULL);
 332    }
 333
 334    memset(&templ, 0, sizeof(templ));
 335    templ.target = screen->target;
 336    templ.width0 = width;
 337    templ.height0 = height;
 338    templ.depth0 = 1;
 339    templ.array_size = 1;
 340    templ.last_level = 0;
 341
 342    for (i = 0; i < count; i++) {
 343       enum pipe_format format;
 344       unsigned bind;
 345
 346       /* the texture already exists or not requested */
 347       if (drawable->textures[statts[i]])
 348          continue;
 349
 350       dri_drawable_get_format(drawable, statts[i], &format, &bind);
 351
 352       /* if we don't do any present, no need for display targets */
 353       if (statts[i] != ST_ATTACHMENT_DEPTH_STENCIL && !screen->swrast_no_present)
 354          bind |= PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_LINEAR;
 355
 356       if (format == PIPE_FORMAT_NONE)
 357          continue;
 358
 359       templ.format = format;
 360       templ.bind = bind;
 361
 362       if (statts[i] == ST_ATTACHMENT_FRONT_LEFT &&
 363           screen->base.screen->resource_create_front &&
 364           loader->base.version >= 3) {
 365          drawable->textures[statts[i]] =
 366             screen->base.screen->resource_create_front(screen->base.screen, &templ, (const void *)drawable);
 367       } else
 368          drawable->textures[statts[i]] =
 369             screen->base.screen->resource_create(screen->base.screen, &templ);
 370    }
 371
 372    drawable->old_w = width;
 373    drawable->old_h = height;
 374 }
 375
 376 static void
 377 drisw_update_tex_buffer(struct dri_drawable *drawable,
 378                         struct dri_context *ctx,
 379                         struct pipe_resource *res)
 380 {
 381    __DRIdrawable *dPriv = drawable->dPriv;
 382
 383    struct st_context *st_ctx = (struct st_context *)ctx->st;
 384    struct pipe_context *pipe = st_ctx->pipe;
 385    struct pipe_transfer *transfer;
 386    char *map;
 387    int x, y, w, h;
 388    int ximage_stride, line;
 389    int cpp = util_format_get_blocksize(res->format);
 390
 391    get_drawable_info(dPriv, &x, &y, &w, &h);
 392
 393    map = pipe_transfer_map(pipe, res,
 394                            0, 0, // level, layer,
 395                            PIPE_TRANSFER_WRITE,
 396                            x, y, w, h, &transfer);
 397
 398    /* Copy the Drawable content to the mapped texture buffer */
 399    if (!get_image_shm(dPriv, x, y, w, h, res))
 400       get_image(dPriv, x, y, w, h, map);
 401
 402    /* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
 403       get_image() has a pitch rounded up to 4 bytes.  */
 404    ximage_stride = ((w * cpp) + 3) & -4;
 405    for (line = h-1; line; --line) {
 406       memmove(&map[line * transfer->stride],
 407               &map[line * ximage_stride],
 408               ximage_stride);
 409    }
 410
 411    pipe_transfer_unmap(pipe, transfer);
 412 }
 413
 414 static __DRIimageExtension driSWImageExtension = {
 415     .base = { __DRI_IMAGE, 6 },
 416
 417     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
 418     .createImageFromTexture = dri2_create_from_texture,
 419     .destroyImage = dri2_destroy_image,
 420 };
 421
 422 /*
 423  * Backend function for init_screen.
 424  */
 425
 426 static const __DRIextension *drisw_screen_extensions[] = {
 427    &driTexBufferExtension.base,
 428    &dri2RendererQueryExtension.base,
 429    &dri2ConfigQueryExtension.base,
 430    &dri2FenceExtension.base,
 431    &dri2NoErrorExtension.base,
 432    &driSWImageExtension.base,
 433    &dri2FlushControlExtension.base,
 434    NULL
 435 };
 436
 437 static const struct drisw_loader_funcs drisw_lf = {
 438    .get_image = drisw_get_image,
 439    .put_image = drisw_put_image,
 440    .put_image2 = drisw_put_image2
 441 };
 442
 443 static const struct drisw_loader_funcs drisw_shm_lf = {
 444    .get_image = drisw_get_image,
 445    .put_image = drisw_put_image,
 446    .put_image2 = drisw_put_image2,
 447    .put_image_shm = drisw_put_image_shm
 448 };
 449
 450 static const __DRIconfig **
 451 drisw_init_screen(__DRIscreen * sPriv)
 452 {
 453    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
 454    const __DRIconfig **configs;
 455    struct dri_screen *screen;
 456    struct pipe_screen *pscreen = NULL;
 457    const struct drisw_loader_funcs *lf = &drisw_lf;
 458
 459    screen = CALLOC_STRUCT(dri_screen);
 460    if (!screen)
 461       return NULL;
 462
 463    screen->sPriv = sPriv;
 464    screen->fd = -1;
 465
 466    screen->swrast_no_present = debug_get_option_swrast_no_present();
 467
 468    sPriv->driverPrivate = (void *)screen;
 469    sPriv->extensions = drisw_screen_extensions;
 470    if (loader->base.version >= 4) {
 471       if (loader->putImageShm)
 472          lf = &drisw_shm_lf;
 473    }
 474
 475    if (pipe_loader_sw_probe_dri(&screen->dev, lf)) {
 476       dri_init_options(screen);
 477
 478       pscreen = pipe_loader_create_screen(screen->dev);
 479    }
 480
 481    if (!pscreen)
 482       goto fail;
 483
 484    configs = dri_init_screen_helper(screen, pscreen);
 485    if (!configs)
 486       goto fail;
 487
 488    screen->lookup_egl_image = dri2_lookup_egl_image;
 489
 490    return configs;
 491 fail:
 492    dri_destroy_screen_helper(screen);
 493    if (screen->dev)
 494       pipe_loader_release(&screen->dev, 1);
 495    FREE(screen);
 496    return NULL;
 497 }
 498
 499 static boolean
 500 drisw_create_buffer(__DRIscreen * sPriv,
 501                     __DRIdrawable * dPriv,
 502                     const struct gl_config * visual, boolean isPixmap)
 503 {
 504    struct dri_drawable *drawable = NULL;
 505
 506    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
 507       return FALSE;
 508
 509    drawable = dPriv->driverPrivate;
 510
 511    drawable->allocate_textures = drisw_allocate_textures;
 512    drawable->update_drawable_info = drisw_update_drawable_info;
 513    drawable->flush_frontbuffer = drisw_flush_frontbuffer;
 514    drawable->update_tex_buffer = drisw_update_tex_buffer;
 515
 516    return TRUE;
 517 }
 518
 519 /**
 520  * DRI driver virtual function table.
 521  *
 522  * DRI versions differ in their implementation of init_screen and swap_buffers.
 523  */
 524 const struct __DriverAPIRec galliumsw_driver_api = {
 525    .InitScreen = drisw_init_screen,
 526    .DestroyScreen = dri_destroy_screen,
 527    .CreateContext = dri_create_context,
 528    .DestroyContext = dri_destroy_context,
 529    .CreateBuffer = drisw_create_buffer,
 530    .DestroyBuffer = dri_destroy_buffer,
 531    .SwapBuffers = drisw_swap_buffers,
 532    .MakeCurrent = dri_make_current,
 533    .UnbindContext = dri_unbind_context,
 534    .CopySubBuffer = drisw_copy_sub_buffer,
 535 };
 536
 537 /* This is the table of extensions that the loader will dlsym() for. */
 538 const __DRIextension *galliumsw_driver_extensions[] = {
 539     &driCoreExtension.base,
 540     &driSWRastExtension.base,
 541     &driCopySubBufferExtension.base,
 542     &gallium_config_options.base,
 543     NULL
 544 };
 545
 546 /* vim: set sw=3 ts=8 sts=3 expandtab: */