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 static boolean swrast_no_present = FALSE;
  46
  47 static inline void
  48 get_drawable_info(__DRIdrawable *dPriv, int *x, int *y, int *w, int *h)
  49 {
  50    __DRIscreen *sPriv = dPriv->driScreenPriv;
  51    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  52
  53    loader->getDrawableInfo(dPriv,
  54                            x, y, w, h,
  55                            dPriv->loaderPrivate);
  56 }
  57
  58 static inline void
  59 put_image(__DRIdrawable *dPriv, void *data, unsigned width, unsigned height)
  60 {
  61    __DRIscreen *sPriv = dPriv->driScreenPriv;
  62    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  63
  64    loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
  65                     0, 0, width, height,
  66                     data, dPriv->loaderPrivate);
  67 }
  68
  69 static inline void
  70 put_image2(__DRIdrawable *dPriv, void *data, int x, int y,
  71            unsigned width, unsigned height, unsigned stride)
  72 {
  73    __DRIscreen *sPriv = dPriv->driScreenPriv;
  74    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  75
  76    loader->putImage2(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
  77                      x, y, width, height, stride,
  78                      data, dPriv->loaderPrivate);
  79 }
  80
  81 static inline void
  82 put_image_shm(__DRIdrawable *dPriv, int shmid, char *shmaddr,
  83               unsigned offset, int x, int y,
  84               unsigned width, unsigned height, unsigned stride)
  85 {
  86    __DRIscreen *sPriv = dPriv->driScreenPriv;
  87    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  88
  89    loader->putImageShm(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
  90                        x, y, width, height, stride,
  91                        shmid, shmaddr, offset, dPriv->loaderPrivate);
  92 }
  93
  94 static inline void
  95 get_image(__DRIdrawable *dPriv, int x, int y, int width, int height, void *data)
  96 {
  97    __DRIscreen *sPriv = dPriv->driScreenPriv;
  98    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
  99
 100    loader->getImage(dPriv,
 101                     x, y, width, height,
 102                     data, dPriv->loaderPrivate);
 103 }
 104
 105 static inline void
 106 get_image2(__DRIdrawable *dPriv, int x, int y, int width, int height, int stride, void *data)
 107 {
 108    __DRIscreen *sPriv = dPriv->driScreenPriv;
 109    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
 110
 111    /* getImage2 support is only in version 3 or newer */
 112    if (loader->base.version < 3)
 113       return;
 114
 115    loader->getImage2(dPriv,
 116                      x, y, width, height, stride,
 117                      data, dPriv->loaderPrivate);
 118 }
 119
 120 static void
 121 drisw_update_drawable_info(struct dri_drawable *drawable)
 122 {
 123    __DRIdrawable *dPriv = drawable->dPriv;
 124    int x, y;
 125
 126    get_drawable_info(dPriv, &x, &y, &dPriv->w, &dPriv->h);
 127 }
 128
 129 static void
 130 drisw_get_image(struct dri_drawable *drawable,
 131                 int x, int y, unsigned width, unsigned height, unsigned stride,
 132                 void *data)
 133 {
 134    __DRIdrawable *dPriv = drawable->dPriv;
 135    int draw_x, draw_y, draw_w, draw_h;
 136
 137    get_drawable_info(dPriv, &draw_x, &draw_y, &draw_w, &draw_h);
 138    get_image2(dPriv, x, y, draw_w, draw_h, stride, data);
 139 }
 140
 141 static void
 142 drisw_put_image(struct dri_drawable *drawable,
 143                 void *data, unsigned width, unsigned height)
 144 {
 145    __DRIdrawable *dPriv = drawable->dPriv;
 146
 147    put_image(dPriv, data, width, height);
 148 }
 149
 150 static void
 151 drisw_put_image2(struct dri_drawable *drawable,
 152                  void *data, int x, int y, unsigned width, unsigned height,
 153                  unsigned stride)
 154 {
 155    __DRIdrawable *dPriv = drawable->dPriv;
 156
 157    put_image2(dPriv, data, x, y, width, height, stride);
 158 }
 159
 160 static inline void
 161 drisw_put_image_shm(struct dri_drawable *drawable,
 162                     int shmid, char *shmaddr, unsigned offset,
 163                     int x, int y, unsigned width, unsigned height,
 164                     unsigned stride)
 165 {
 166    __DRIdrawable *dPriv = drawable->dPriv;
 167
 168    put_image_shm(dPriv, shmid, shmaddr, offset, x, y, width, height, stride);
 169 }
 170
 171 static inline void
 172 drisw_present_texture(__DRIdrawable *dPriv,
 173                       struct pipe_resource *ptex, struct pipe_box *sub_box)
 174 {
 175    struct dri_drawable *drawable = dri_drawable(dPriv);
 176    struct dri_screen *screen = dri_screen(drawable->sPriv);
 177
 178    if (swrast_no_present)
 179       return;
 180
 181    screen->base.screen->flush_frontbuffer(screen->base.screen, ptex, 0, 0, drawable, sub_box);
 182 }
 183
 184 static inline void
 185 drisw_invalidate_drawable(__DRIdrawable *dPriv)
 186 {
 187    struct dri_drawable *drawable = dri_drawable(dPriv);
 188
 189    drawable->texture_stamp = dPriv->lastStamp - 1;
 190
 191    p_atomic_inc(&drawable->base.stamp);
 192 }
 193
 194 static inline void
 195 drisw_copy_to_front(__DRIdrawable * dPriv,
 196                     struct pipe_resource *ptex)
 197 {
 198    drisw_present_texture(dPriv, ptex, NULL);
 199
 200    drisw_invalidate_drawable(dPriv);
 201 }
 202
 203 /*
 204  * Backend functions for st_framebuffer interface and swap_buffers.
 205  */
 206
 207 static void
 208 drisw_swap_buffers(__DRIdrawable *dPriv)
 209 {
 210    struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
 211    struct dri_drawable *drawable = dri_drawable(dPriv);
 212    struct pipe_resource *ptex;
 213
 214    if (!ctx)
 215       return;
 216
 217    ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 218
 219    if (ptex) {
 220       if (ctx->pp)
 221          pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
 222
 223       ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL);
 224
 225       drisw_copy_to_front(dPriv, ptex);
 226    }
 227 }
 228
 229 static void
 230 drisw_copy_sub_buffer(__DRIdrawable *dPriv, int x, int y,
 231                       int w, int h)
 232 {
 233    struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv);
 234    struct dri_drawable *drawable = dri_drawable(dPriv);
 235    struct pipe_resource *ptex;
 236    struct pipe_box box;
 237    if (!ctx)
 238       return;
 239
 240    ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 241
 242    if (ptex) {
 243       if (ctx->pp && drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL])
 244          pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
 245
 246       ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL);
 247
 248       u_box_2d(x, dPriv->h - y - h, w, h, &box);
 249       drisw_present_texture(dPriv, ptex, &box);
 250    }
 251 }
 252
 253 static void
 254 drisw_flush_frontbuffer(struct dri_context *ctx,
 255                         struct dri_drawable *drawable,
 256                         enum st_attachment_type statt)
 257 {
 258    struct pipe_resource *ptex;
 259
 260    if (!ctx)
 261       return;
 262
 263    ptex = drawable->textures[statt];
 264
 265    if (ptex) {
 266       drisw_copy_to_front(ctx->dPriv, ptex);
 267    }
 268 }
 269
 270 /**
 271  * Allocate framebuffer attachments.
 272  *
 273  * During fixed-size operation, the function keeps allocating new attachments
 274  * as they are requested. Unused attachments are not removed, not until the
 275  * framebuffer is resized or destroyed.
 276  */
 277 static void
 278 drisw_allocate_textures(struct dri_context *stctx,
 279                         struct dri_drawable *drawable,
 280                         const enum st_attachment_type *statts,
 281                         unsigned count)
 282 {
 283    struct dri_screen *screen = dri_screen(drawable->sPriv);
 284    const __DRIswrastLoaderExtension *loader = drawable->dPriv->driScreenPriv->swrast_loader;
 285    struct pipe_resource templ;
 286    unsigned width, height;
 287    boolean resized;
 288    unsigned i;
 289
 290    width  = drawable->dPriv->w;
 291    height = drawable->dPriv->h;
 292
 293    resized = (drawable->old_w != width ||
 294               drawable->old_h != height);
 295
 296    /* remove outdated textures */
 297    if (resized) {
 298       for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 299          pipe_resource_reference(&drawable->textures[i], NULL);
 300    }
 301
 302    memset(&templ, 0, sizeof(templ));
 303    templ.target = screen->target;
 304    templ.width0 = width;
 305    templ.height0 = height;
 306    templ.depth0 = 1;
 307    templ.array_size = 1;
 308    templ.last_level = 0;
 309
 310    for (i = 0; i < count; i++) {
 311       enum pipe_format format;
 312       unsigned bind;
 313
 314       /* the texture already exists or not requested */
 315       if (drawable->textures[statts[i]])
 316          continue;
 317
 318       dri_drawable_get_format(drawable, statts[i], &format, &bind);
 319
 320       /* if we don't do any present, no need for display targets */
 321       if (statts[i] != ST_ATTACHMENT_DEPTH_STENCIL && !swrast_no_present)
 322          bind |= PIPE_BIND_DISPLAY_TARGET;
 323
 324       if (format == PIPE_FORMAT_NONE)
 325          continue;
 326
 327       templ.format = format;
 328       templ.bind = bind;
 329
 330       if (statts[i] == ST_ATTACHMENT_FRONT_LEFT &&
 331           screen->base.screen->resource_create_front &&
 332           loader->base.version >= 3) {
 333          drawable->textures[statts[i]] =
 334             screen->base.screen->resource_create_front(screen->base.screen, &templ, (const void *)drawable);
 335       } else
 336          drawable->textures[statts[i]] =
 337             screen->base.screen->resource_create(screen->base.screen, &templ);
 338    }
 339
 340    drawable->old_w = width;
 341    drawable->old_h = height;
 342 }
 343
 344 static void
 345 drisw_update_tex_buffer(struct dri_drawable *drawable,
 346                         struct dri_context *ctx,
 347                         struct pipe_resource *res)
 348 {
 349    __DRIdrawable *dPriv = drawable->dPriv;
 350
 351    struct st_context *st_ctx = (struct st_context *)ctx->st;
 352    struct pipe_context *pipe = st_ctx->pipe;
 353    struct pipe_transfer *transfer;
 354    char *map;
 355    int x, y, w, h;
 356    int ximage_stride, line;
 357    int cpp = util_format_get_blocksize(res->format);
 358
 359    get_drawable_info(dPriv, &x, &y, &w, &h);
 360
 361    map = pipe_transfer_map(pipe, res,
 362                            0, 0, // level, layer,
 363                            PIPE_TRANSFER_WRITE,
 364                            x, y, w, h, &transfer);
 365
 366    /* Copy the Drawable content to the mapped texture buffer */
 367    get_image(dPriv, x, y, w, h, map);
 368
 369    /* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
 370       get_image() has a pitch rounded up to 4 bytes.  */
 371    ximage_stride = ((w * cpp) + 3) & -4;
 372    for (line = h-1; line; --line) {
 373       memmove(&map[line * transfer->stride],
 374               &map[line * ximage_stride],
 375               ximage_stride);
 376    }
 377
 378    pipe_transfer_unmap(pipe, transfer);
 379 }
 380
 381 static __DRIimageExtension driSWImageExtension = {
 382     .base = { __DRI_IMAGE, 6 },
 383
 384     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
 385     .createImageFromTexture = dri2_create_from_texture,
 386     .destroyImage = dri2_destroy_image,
 387 };
 388
 389 /*
 390  * Backend function for init_screen.
 391  */
 392
 393 static const __DRIextension *drisw_screen_extensions[] = {
 394    &driTexBufferExtension.base,
 395    &dri2RendererQueryExtension.base,
 396    &dri2ConfigQueryExtension.base,
 397    &dri2FenceExtension.base,
 398    &dri2NoErrorExtension.base,
 399    &driSWImageExtension.base,
 400    &dri2FlushControlExtension.base,
 401    NULL
 402 };
 403
 404 static struct drisw_loader_funcs drisw_lf = {
 405    .get_image = drisw_get_image,
 406    .put_image = drisw_put_image,
 407    .put_image2 = drisw_put_image2
 408 };
 409
 410 static const __DRIconfig **
 411 drisw_init_screen(__DRIscreen * sPriv)
 412 {
 413    const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader;
 414    const __DRIconfig **configs;
 415    struct dri_screen *screen;
 416    struct pipe_screen *pscreen = NULL;
 417
 418    screen = CALLOC_STRUCT(dri_screen);
 419    if (!screen)
 420       return NULL;
 421
 422    screen->sPriv = sPriv;
 423    screen->fd = -1;
 424
 425    swrast_no_present = debug_get_option_swrast_no_present();
 426
 427    sPriv->driverPrivate = (void *)screen;
 428    sPriv->extensions = drisw_screen_extensions;
 429    if (loader->base.version >= 4) {
 430       if (loader->putImageShm)
 431          drisw_lf.put_image_shm = drisw_put_image_shm;
 432    }
 433
 434    if (pipe_loader_sw_probe_dri(&screen->dev, &drisw_lf)) {
 435       dri_init_options(screen);
 436
 437       pscreen = pipe_loader_create_screen(screen->dev);
 438    }
 439
 440    if (!pscreen)
 441       goto fail;
 442
 443    configs = dri_init_screen_helper(screen, pscreen);
 444    if (!configs)
 445       goto fail;
 446
 447    screen->lookup_egl_image = dri2_lookup_egl_image;
 448
 449    return configs;
 450 fail:
 451    dri_destroy_screen_helper(screen);
 452    if (screen->dev)
 453       pipe_loader_release(&screen->dev, 1);
 454    FREE(screen);
 455    return NULL;
 456 }
 457
 458 static boolean
 459 drisw_create_buffer(__DRIscreen * sPriv,
 460                     __DRIdrawable * dPriv,
 461                     const struct gl_config * visual, boolean isPixmap)
 462 {
 463    struct dri_drawable *drawable = NULL;
 464
 465    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
 466       return FALSE;
 467
 468    drawable = dPriv->driverPrivate;
 469
 470    drawable->allocate_textures = drisw_allocate_textures;
 471    drawable->update_drawable_info = drisw_update_drawable_info;
 472    drawable->flush_frontbuffer = drisw_flush_frontbuffer;
 473    drawable->update_tex_buffer = drisw_update_tex_buffer;
 474
 475    return TRUE;
 476 }
 477
 478 /**
 479  * DRI driver virtual function table.
 480  *
 481  * DRI versions differ in their implementation of init_screen and swap_buffers.
 482  */
 483 const struct __DriverAPIRec galliumsw_driver_api = {
 484    .InitScreen = drisw_init_screen,
 485    .DestroyScreen = dri_destroy_screen,
 486    .CreateContext = dri_create_context,
 487    .DestroyContext = dri_destroy_context,
 488    .CreateBuffer = drisw_create_buffer,
 489    .DestroyBuffer = dri_destroy_buffer,
 490    .SwapBuffers = drisw_swap_buffers,
 491    .MakeCurrent = dri_make_current,
 492    .UnbindContext = dri_unbind_context,
 493    .CopySubBuffer = drisw_copy_sub_buffer,
 494 };
 495
 496 /* This is the table of extensions that the loader will dlsym() for. */
 497 const __DRIextension *galliumsw_driver_extensions[] = {
 498     &driCoreExtension.base,
 499     &driSWRastExtension.base,
 500     &driCopySubBufferExtension.base,
 501     &gallium_config_options.base,
 502     NULL
 503 };
 504
 505 /* vim: set sw=3 ts=8 sts=3 expandtab: */