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/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    loader->getImageShm(dPriv, x, y, width, height, whandle.handle, dPriv->loaderPrivate);
 142    return TRUE;
 143 }
 144
 145 static void
 146 drisw_update_drawable_info(struct dri_drawable *drawable)
 147 {
 148    __DRIdrawable *dPriv = drawable->dPriv;
 149    int x, y;
 150
 151    get_drawable_info(dPriv, &x, &y, &dPriv->w, &dPriv->h);
 152 }
 153
 154 static void
 155 drisw_get_image(struct dri_drawable *drawable,
 156                 int x, int y, unsigned width, unsigned height, unsigned stride,
 157                 void *data)
 158 {
 159    __DRIdrawable *dPriv = drawable->dPriv;
 160    int draw_x, draw_y, draw_w, draw_h;
 161
 162    get_drawable_info(dPriv, &draw_x, &draw_y, &draw_w, &draw_h);
 163    get_image2(dPriv, x, y, draw_w, draw_h, stride, data);
 164 }
 165
 166 static void
 167 drisw_put_image(struct dri_drawable *drawable,
 168                 void *data, unsigned width, unsigned height)
 169 {
 170    __DRIdrawable *dPriv = drawable->dPriv;
 171
 172    put_image(dPriv, data, width, height);
 173 }
 174
 175 static void
 176 drisw_put_image2(struct dri_drawable *drawable,
 177                  void *data, int x, int y, unsigned width, unsigned height,
 178                  unsigned stride)
 179 {
 180    __DRIdrawable *dPriv = drawable->dPriv;
 181
 182    put_image2(dPriv, data, x, y, width, height, stride);
 183 }
 184
 185 static inline void
 186 drisw_put_image_shm(struct dri_drawable *drawable,
 187                     int shmid, char *shmaddr, unsigned offset,
 188                     unsigned offset_x,
 189                     int x, int y, unsigned width, unsigned height,
 190                     unsigned stride)
 191 {
 192    __DRIdrawable *dPriv = drawable->dPriv;
 193
 194    put_image_shm(dPriv, shmid, shmaddr, offset, offset_x, x, y, width, height, stride);
 195 }
 196
 197 static inline void
 198 drisw_present_texture(__DRIdrawable *dPriv,
 199                       struct pipe_resource *ptex, struct pipe_box *sub_box)
 200 {
 201    struct dri_drawable *drawable = dri_drawable(dPriv);
 202    struct dri_screen *screen = dri_screen(drawable->sPriv);
 203
 204    if (screen->swrast_no_present)
 205       return;
 206
 207    screen->base.screen->flush_frontbuffer(screen->base.screen, ptex, 0, 0, drawable, sub_box);
 208 }
 209
 210 static inline void
 211 drisw_invalidate_drawable(__DRIdrawable *dPriv)
 212 {
 213    struct dri_drawable *drawable = dri_drawable(dPriv);
 214
 215    drawable->texture_stamp = dPriv->lastStamp - 1;
 216
 217    p_atomic_inc(&drawable->base.stamp);
 218 }
 219
 220 static inline void
 221 drisw_copy_to_front(__DRIdrawable * dPriv,
 222                     struct pipe_resource *ptex)
 223 {
 224    drisw_present_texture(dPriv, ptex, NULL);
 225
 226    drisw_invalidate_drawable(dPriv);
 227 }
 228
 229 /*
 230  * Backend functions for st_framebuffer interface and swap_buffers.
 231  */
 232
 233 static void
 234 drisw_swap_buffers(__DRIdrawable *dPriv)
 235 {
 236    struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
 237    struct dri_drawable *drawable = dri_drawable(dPriv);
 238    struct pipe_resource *ptex;
 239
 240    if (!ctx)
 241       return;
 242
 243    ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 244
 245    if (ptex) {
 246       if (ctx->pp)
 247          pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
 248
 249       ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL);
 250
 251       drisw_copy_to_front(dPriv, ptex);
 252    }
 253 }
 254
 255 static void
 256 drisw_copy_sub_buffer(__DRIdrawable *dPriv, int x, int y,
 257                       int w, int h)
 258 {
 259    struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
 260    struct dri_drawable *drawable = dri_drawable(dPriv);
 261    struct pipe_resource *ptex;
 262    struct pipe_box box;
 263    if (!ctx)
 264       return;
 265
 266    ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 267
 268    if (ptex) {
 269       if (ctx->pp && drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL])
 270          pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
 271
 272       ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL);
 273
 274       u_box_2d(x, dPriv->h - y - h, w, h, &box);
 275       drisw_present_texture(dPriv, ptex, &box);
 276    }
 277 }
 278
 279 static void
 280 drisw_flush_frontbuffer(struct dri_context *ctx,
 281                         struct dri_drawable *drawable,
 282                         enum st_attachment_type statt)
 283 {
 284    struct pipe_resource *ptex;
 285
 286    if (!ctx)
 287       return;
 288
 289    ptex = drawable->textures[statt];
 290
 291    if (ptex) {
 292       drisw_copy_to_front(ctx->dPriv, ptex);
 293    }
 294 }
 295
 296 /**
 297  * Allocate framebuffer attachments.
 298  *
 299  * During fixed-size operation, the function keeps allocating new attachments
 300  * as they are requested. Unused attachments are not removed, not until the
 301  * framebuffer is resized or destroyed.
 302  */
 303 static void
 304 drisw_allocate_textures(struct dri_context *stctx,
 305                         struct dri_drawable *drawable,
 306                         const enum st_attachment_type *statts,
 307                         unsigned count)
 308 {
 309    struct dri_screen *screen = dri_screen(drawable->sPriv);
 310    const __DRIswrastLoaderExtension *loader = drawable->dPriv->driScreenPriv->swrast_loader;
 311    struct pipe_resource templ;
 312    unsigned width, height;
 313    boolean resized;
 314    unsigned i;
 315
 316    width  = drawable->dPriv->w;
 317    height = drawable->dPriv->h;
 318
 319    resized = (drawable->old_w != width ||
 320               drawable->old_h != height);
 321
 322    /* remove outdated textures */
 323    if (resized) {
 324       for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 325          pipe_resource_reference(&drawable->textures[i], NULL);
 326    }
 327
 328    memset(&templ, 0, sizeof(templ));
 329    templ.target = screen->target;
 330    templ.width0 = width;
 331    templ.height0 = height;
 332    templ.depth0 = 1;
 333    templ.array_size = 1;
 334    templ.last_level = 0;
 335
 336    for (i = 0; i < count; i++) {
 337       enum pipe_format format;
 338       unsigned bind;
 339
 340       /* the texture already exists or not requested */
 341       if (drawable->textures[statts[i]])
 342          continue;
 343
 344       dri_drawable_get_format(drawable, statts[i], &format, &bind);
 345
 346       /* if we don't do any present, no need for display targets */
 347       if (statts[i] != ST_ATTACHMENT_DEPTH_STENCIL && !screen->swrast_no_present)
 348          bind |= PIPE_BIND_DISPLAY_TARGET;
 349
 350       if (format == PIPE_FORMAT_NONE)
 351          continue;
 352
 353       templ.format = format;
 354       templ.bind = bind;
 355
 356       if (statts[i] == ST_ATTACHMENT_FRONT_LEFT &&
 357           screen->base.screen->resource_create_front &&
 358           loader->base.version >= 3) {
 359          drawable->textures[statts[i]] =
 360             screen->base.screen->resource_create_front(screen->base.screen, &templ, (const void *)drawable);
 361       } else
 362          drawable->textures[statts[i]] =
 363             screen->base.screen->resource_create(screen->base.screen, &templ);
 364    }
 365
 366    drawable->old_w = width;
 367    drawable->old_h = height;
 368 }
 369
 370 static void
 371 drisw_update_tex_buffer(struct dri_drawable *drawable,
 372                         struct dri_context *ctx,
 373                         struct pipe_resource *res)
 374 {
 375    __DRIdrawable *dPriv = drawable->dPriv;
 376
 377    struct st_context *st_ctx = (struct st_context *)ctx->st;
 378    struct pipe_context *pipe = st_ctx->pipe;
 379    struct pipe_transfer *transfer;
 380    char *map;
 381    int x, y, w, h;
 382    int ximage_stride, line;
 383    int cpp = util_format_get_blocksize(res->format);
 384
 385    get_drawable_info(dPriv, &x, &y, &w, &h);
 386
 387    map = pipe_transfer_map(pipe, res,
 388                            0, 0, // level, layer,
 389                            PIPE_TRANSFER_WRITE,
 390                            x, y, w, h, &transfer);
 391
 392    /* Copy the Drawable content to the mapped texture buffer */
 393    if (!get_image_shm(dPriv, x, y, w, h, res))
 394       get_image(dPriv, x, y, w, h, map);
 395
 396    /* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
 397       get_image() has a pitch rounded up to 4 bytes.  */
 398    ximage_stride = ((w * cpp) + 3) & -4;
 399    for (line = h-1; line; --line) {
 400       memmove(&map[line * transfer->stride],
 401               &map[line * ximage_stride],
 402               ximage_stride);
 403    }
 404
 405    pipe_transfer_unmap(pipe, transfer);
 406 }
 407
 408 static __DRIimageExtension driSWImageExtension = {
 409     .base = { __DRI_IMAGE, 6 },
 410
 411     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
 412     .createImageFromTexture = dri2_create_from_texture,
 413     .destroyImage = dri2_destroy_image,
 414 };
 415
 416 /*
 417  * Backend function for init_screen.
 418  */
 419
 420 static const __DRIextension *drisw_screen_extensions[] = {
 421    &driTexBufferExtension.base,
 422    &dri2RendererQueryExtension.base,
 423    &dri2ConfigQueryExtension.base,
 424    &dri2FenceExtension.base,
 425    &dri2NoErrorExtension.base,
 426    &driSWImageExtension.base,
 427    &dri2FlushControlExtension.base,
 428    NULL
 429 };
 430
 431 static const struct drisw_loader_funcs drisw_lf = {
 432    .get_image = drisw_get_image,
 433    .put_image = drisw_put_image,
 434    .put_image2 = drisw_put_image2
 435 };
 436
 437 static const struct drisw_loader_funcs drisw_shm_lf = {
 438    .get_image = drisw_get_image,
 439    .put_image = drisw_put_image,
 440    .put_image2 = drisw_put_image2,
 441    .put_image_shm = drisw_put_image_shm
 442 };
 443
 444 static const __DRIconfig **
 445 drisw_init_screen(__DRIscreen * sPriv)
 446 {
 447    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
 448    const __DRIconfig **configs;
 449    struct dri_screen *screen;
 450    struct pipe_screen *pscreen = NULL;
 451    const struct drisw_loader_funcs *lf = &drisw_lf;
 452
 453    screen = CALLOC_STRUCT(dri_screen);
 454    if (!screen)
 455       return NULL;
 456
 457    screen->sPriv = sPriv;
 458    screen->fd = -1;
 459
 460    screen->swrast_no_present = debug_get_option_swrast_no_present();
 461
 462    sPriv->driverPrivate = (void *)screen;
 463    sPriv->extensions = drisw_screen_extensions;
 464    if (loader->base.version >= 4) {
 465       if (loader->putImageShm)
 466          lf = &drisw_shm_lf;
 467    }
 468
 469    if (pipe_loader_sw_probe_dri(&screen->dev, lf)) {
 470       dri_init_options(screen);
 471
 472       pscreen = pipe_loader_create_screen(screen->dev);
 473    }
 474
 475    if (!pscreen)
 476       goto fail;
 477
 478    configs = dri_init_screen_helper(screen, pscreen);
 479    if (!configs)
 480       goto fail;
 481
 482    screen->lookup_egl_image = dri2_lookup_egl_image;
 483
 484    return configs;
 485 fail:
 486    dri_destroy_screen_helper(screen);
 487    if (screen->dev)
 488       pipe_loader_release(&screen->dev, 1);
 489    FREE(screen);
 490    return NULL;
 491 }
 492
 493 static boolean
 494 drisw_create_buffer(__DRIscreen * sPriv,
 495                     __DRIdrawable * dPriv,
 496                     const struct gl_config * visual, boolean isPixmap)
 497 {
 498    struct dri_drawable *drawable = NULL;
 499
 500    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
 501       return FALSE;
 502
 503    drawable = dPriv->driverPrivate;
 504
 505    drawable->allocate_textures = drisw_allocate_textures;
 506    drawable->update_drawable_info = drisw_update_drawable_info;
 507    drawable->flush_frontbuffer = drisw_flush_frontbuffer;
 508    drawable->update_tex_buffer = drisw_update_tex_buffer;
 509
 510    return TRUE;
 511 }
 512
 513 /**
 514  * DRI driver virtual function table.
 515  *
 516  * DRI versions differ in their implementation of init_screen and swap_buffers.
 517  */
 518 const struct __DriverAPIRec galliumsw_driver_api = {
 519    .InitScreen = drisw_init_screen,
 520    .DestroyScreen = dri_destroy_screen,
 521    .CreateContext = dri_create_context,
 522    .DestroyContext = dri_destroy_context,
 523    .CreateBuffer = drisw_create_buffer,
 524    .DestroyBuffer = dri_destroy_buffer,
 525    .SwapBuffers = drisw_swap_buffers,
 526    .MakeCurrent = dri_make_current,
 527    .UnbindContext = dri_unbind_context,
 528    .CopySubBuffer = drisw_copy_sub_buffer,
 529 };
 530
 531 /* This is the table of extensions that the loader will dlsym() for. */
 532 const __DRIextension *galliumsw_driver_extensions[] = {
 533     &driCoreExtension.base,
 534     &driSWRastExtension.base,
 535     &driCopySubBufferExtension.base,
 536     &gallium_config_options.base,
 537     NULL
 538 };
 539
 540 /* vim: set sw=3 ts=8 sts=3 expandtab: */