src/gallium/drivers/svga/svga_screen_texture.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "svga_cmd.h"
  27
  28 #include "pipe/p_state.h"
  29 #include "pipe/p_defines.h"
  30 #include "util/u_inlines.h"
  31 #include "os/os_thread.h"
  32 #include "util/u_format.h"
  33 #include "util/u_math.h"
  34 #include "util/u_memory.h"
  35
  36 #include "svga_screen.h"
  37 #include "svga_context.h"
  38 #include "svga_screen_texture.h"
  39 #include "svga_screen_buffer.h"
  40 #include "svga_winsys.h"
  41 #include "svga_debug.h"
  42 #include "svga_screen_buffer.h"
  43
  44 #include <util/u_string.h>
  45
  46
  47 /* XXX: This isn't a real hardware flag, but just a hack for kernel to
  48  * know about primary surfaces. Find a better way to accomplish this.
  49  */
  50 #define SVGA3D_SURFACE_HINT_SCANOUT (1 << 9)
  51
  52
  53 /*
  54  * Helper function and arrays
  55  */
  56
  57 SVGA3dSurfaceFormat
  58 svga_translate_format(enum pipe_format format)
  59 {
  60    switch(format) {
  61
  62    case PIPE_FORMAT_B8G8R8A8_UNORM:
  63       return SVGA3D_A8R8G8B8;
  64    case PIPE_FORMAT_B8G8R8X8_UNORM:
  65       return SVGA3D_X8R8G8B8;
  66
  67       /* Required for GL2.1:
  68        */
  69    case PIPE_FORMAT_B8G8R8A8_SRGB:
  70       return SVGA3D_A8R8G8B8;
  71
  72    case PIPE_FORMAT_B5G6R5_UNORM:
  73       return SVGA3D_R5G6B5;
  74    case PIPE_FORMAT_B5G5R5A1_UNORM:
  75       return SVGA3D_A1R5G5B5;
  76    case PIPE_FORMAT_B4G4R4A4_UNORM:
  77       return SVGA3D_A4R4G4B4;
  78
  79
  80    /* XXX: Doesn't seem to work properly.
  81    case PIPE_FORMAT_Z32_UNORM:
  82       return SVGA3D_Z_D32;
  83     */
  84    case PIPE_FORMAT_Z16_UNORM:
  85       return SVGA3D_Z_D16;
  86    case PIPE_FORMAT_S8Z24_UNORM:
  87       return SVGA3D_Z_D24S8;
  88    case PIPE_FORMAT_X8Z24_UNORM:
  89       return SVGA3D_Z_D24X8;
  90
  91    case PIPE_FORMAT_A8_UNORM:
  92       return SVGA3D_ALPHA8;
  93    case PIPE_FORMAT_L8_UNORM:
  94       return SVGA3D_LUMINANCE8;
  95
  96    case PIPE_FORMAT_DXT1_RGB:
  97    case PIPE_FORMAT_DXT1_RGBA:
  98       return SVGA3D_DXT1;
  99    case PIPE_FORMAT_DXT3_RGBA:
 100       return SVGA3D_DXT3;
 101    case PIPE_FORMAT_DXT5_RGBA:
 102       return SVGA3D_DXT5;
 103
 104    default:
 105       return SVGA3D_FORMAT_INVALID;
 106    }
 107 }
 108
 109
 110 SVGA3dSurfaceFormat
 111 svga_translate_format_render(enum pipe_format format)
 112 {
 113    switch(format) {
 114    case PIPE_FORMAT_B8G8R8A8_UNORM:
 115    case PIPE_FORMAT_B8G8R8X8_UNORM:
 116    case PIPE_FORMAT_B5G5R5A1_UNORM:
 117    case PIPE_FORMAT_B4G4R4A4_UNORM:
 118    case PIPE_FORMAT_B5G6R5_UNORM:
 119    case PIPE_FORMAT_S8Z24_UNORM:
 120    case PIPE_FORMAT_X8Z24_UNORM:
 121    case PIPE_FORMAT_Z32_UNORM:
 122    case PIPE_FORMAT_Z16_UNORM:
 123    case PIPE_FORMAT_L8_UNORM:
 124       return svga_translate_format(format);
 125
 126 #if 1
 127    /* For on host conversion */
 128    case PIPE_FORMAT_DXT1_RGB:
 129       return SVGA3D_X8R8G8B8;
 130    case PIPE_FORMAT_DXT1_RGBA:
 131    case PIPE_FORMAT_DXT3_RGBA:
 132    case PIPE_FORMAT_DXT5_RGBA:
 133       return SVGA3D_A8R8G8B8;
 134 #endif
 135
 136    default:
 137       return SVGA3D_FORMAT_INVALID;
 138    }
 139 }
 140
 141
 142 static INLINE void
 143 svga_transfer_dma_band(struct svga_transfer *st,
 144                        SVGA3dTransferType transfer,
 145                        unsigned y, unsigned h, unsigned srcy)
 146 {
 147    struct svga_texture *texture = svga_texture(st->base.texture);
 148    struct svga_screen *screen = svga_screen(texture->base.screen);
 149    SVGA3dCopyBox box;
 150    enum pipe_error ret;
 151
 152    SVGA_DBG(DEBUG_DMA, "dma %s sid %p, face %u, (%u, %u, %u) - (%u, %u, %u), %ubpp\n",
 153                 transfer == SVGA3D_WRITE_HOST_VRAM ? "to" : "from",
 154                 texture->handle,
 155                 st->base.face,
 156                 st->base.x,
 157                 y,
 158                 st->base.zslice,
 159                 st->base.x + st->base.width,
 160                 y + h,
 161                 st->base.zslice + 1,
 162                 util_format_get_blocksize(texture->base.format)*8/
 163                 (util_format_get_blockwidth(texture->base.format)*util_format_get_blockheight(texture->base.format)));
 164
 165    box.x = st->base.x;
 166    box.y = y;
 167    box.z = st->base.zslice;
 168    box.w = st->base.width;
 169    box.h = h;
 170    box.d = 1;
 171    box.srcx = 0;
 172    box.srcy = srcy;
 173    box.srcz = 0;
 174
 175    pipe_mutex_lock(screen->swc_mutex);
 176    ret = SVGA3D_SurfaceDMA(screen->swc, st, transfer, &box, 1);
 177    if(ret != PIPE_OK) {
 178       screen->swc->flush(screen->swc, NULL);
 179       ret = SVGA3D_SurfaceDMA(screen->swc, st, transfer, &box, 1);
 180       assert(ret == PIPE_OK);
 181    }
 182    pipe_mutex_unlock(screen->swc_mutex);
 183 }
 184
 185
 186 static INLINE void
 187 svga_transfer_dma(struct svga_transfer *st,
 188                  SVGA3dTransferType transfer)
 189 {
 190    struct svga_texture *texture = svga_texture(st->base.texture);
 191    struct svga_screen *screen = svga_screen(texture->base.screen);
 192    struct svga_winsys_screen *sws = screen->sws;
 193    struct pipe_fence_handle *fence = NULL;
 194
 195    if (transfer == SVGA3D_READ_HOST_VRAM) {
 196       SVGA_DBG(DEBUG_PERF, "%s: readback transfer\n", __FUNCTION__);
 197    }
 198
 199
 200    if(!st->swbuf) {
 201       /* Do the DMA transfer in a single go */
 202
 203       svga_transfer_dma_band(st, transfer, st->base.y, st->base.height, 0);
 204
 205       if(transfer == SVGA3D_READ_HOST_VRAM) {
 206          svga_screen_flush(screen, &fence);
 207          sws->fence_finish(sws, fence, 0);
 208          sws->fence_reference(sws, &fence, NULL);
 209       }
 210    }
 211    else {
 212       unsigned y, h, srcy;
 213       unsigned blockheight = util_format_get_blockheight(st->base.texture->format);
 214       h = st->hw_nblocksy * blockheight;
 215       srcy = 0;
 216       for(y = 0; y < st->base.height; y += h) {
 217          unsigned offset, length;
 218          void *hw, *sw;
 219
 220          if (y + h > st->base.height)
 221             h = st->base.height - y;
 222
 223          /* Transfer band must be aligned to pixel block boundaries */
 224          assert(y % blockheight == 0);
 225          assert(h % blockheight == 0);
 226
 227          offset = y * st->base.stride / blockheight;
 228          length = h * st->base.stride / blockheight;
 229
 230          sw = (uint8_t *)st->swbuf + offset;
 231
 232          if(transfer == SVGA3D_WRITE_HOST_VRAM) {
 233             /* Wait for the previous DMAs to complete */
 234             /* TODO: keep one DMA (at half the size) in the background */
 235             if(y) {
 236                svga_screen_flush(screen, &fence);
 237                sws->fence_finish(sws, fence, 0);
 238                sws->fence_reference(sws, &fence, NULL);
 239             }
 240
 241             hw = sws->buffer_map(sws, st->hwbuf, PIPE_BUFFER_USAGE_CPU_WRITE);
 242             assert(hw);
 243             if(hw) {
 244                memcpy(hw, sw, length);
 245                sws->buffer_unmap(sws, st->hwbuf);
 246             }
 247          }
 248
 249          svga_transfer_dma_band(st, transfer, y, h, srcy);
 250
 251          if(transfer == SVGA3D_READ_HOST_VRAM) {
 252             svga_screen_flush(screen, &fence);
 253             sws->fence_finish(sws, fence, 0);
 254
 255             hw = sws->buffer_map(sws, st->hwbuf, PIPE_BUFFER_USAGE_CPU_READ);
 256             assert(hw);
 257             if(hw) {
 258                memcpy(sw, hw, length);
 259                sws->buffer_unmap(sws, st->hwbuf);
 260             }
 261          }
 262       }
 263    }
 264 }
 265
 266
 267 static struct pipe_texture *
 268 svga_texture_create(struct pipe_screen *screen,
 269                     const struct pipe_texture *templat)
 270 {
 271    struct svga_screen *svgascreen = svga_screen(screen);
 272    struct svga_texture *tex = CALLOC_STRUCT(svga_texture);
 273    unsigned width, height, depth;
 274    unsigned level;
 275
 276    if (!tex)
 277       goto error1;
 278
 279    tex->base = *templat;
 280    pipe_reference_init(&tex->base.reference, 1);
 281    tex->base.screen = screen;
 282
 283    assert(templat->last_level < SVGA_MAX_TEXTURE_LEVELS);
 284    if(templat->last_level >= SVGA_MAX_TEXTURE_LEVELS)
 285       goto error2;
 286
 287    width = templat->width0;
 288    height = templat->height0;
 289    depth = templat->depth0;
 290    for(level = 0; level <= templat->last_level; ++level) {
 291       width = u_minify(width, 1);
 292       height = u_minify(height, 1);
 293       depth = u_minify(depth, 1);
 294    }
 295
 296    tex->key.flags = 0;
 297    tex->key.size.width = templat->width0;
 298    tex->key.size.height = templat->height0;
 299    tex->key.size.depth = templat->depth0;
 300
 301    if(templat->target == PIPE_TEXTURE_CUBE) {
 302       tex->key.flags |= SVGA3D_SURFACE_CUBEMAP;
 303       tex->key.numFaces = 6;
 304    }
 305    else {
 306       tex->key.numFaces = 1;
 307    }
 308
 309    tex->key.cachable = 1;
 310
 311    if(templat->tex_usage & PIPE_TEXTURE_USAGE_SAMPLER)
 312       tex->key.flags |= SVGA3D_SURFACE_HINT_TEXTURE;
 313
 314    if(templat->tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 315       tex->key.cachable = 0;
 316    }
 317
 318    if(templat->tex_usage & PIPE_TEXTURE_USAGE_SHARED) {
 319       tex->key.cachable = 0;
 320    }
 321
 322    if(templat->tex_usage & PIPE_TEXTURE_USAGE_SCANOUT) {
 323       tex->key.flags |= SVGA3D_SURFACE_HINT_SCANOUT;
 324       tex->key.cachable = 0;
 325    }
 326
 327    /*
 328     * XXX: Never pass the SVGA3D_SURFACE_HINT_RENDERTARGET hint. Mesa cannot
 329     * know beforehand whether a texture will be used as a rendertarget or not
 330     * and it always requests PIPE_TEXTURE_USAGE_RENDER_TARGET, therefore
 331     * passing the SVGA3D_SURFACE_HINT_RENDERTARGET here defeats its purpose.
 332     */
 333 #if 0
 334    if((templat->tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) &&
 335       !util_format_is_compressed(templat->format))
 336       tex->key.flags |= SVGA3D_SURFACE_HINT_RENDERTARGET;
 337 #endif
 338
 339    if(templat->tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL)
 340       tex->key.flags |= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
 341
 342    tex->key.numMipLevels = templat->last_level + 1;
 343
 344    tex->key.format = svga_translate_format(templat->format);
 345    if(tex->key.format == SVGA3D_FORMAT_INVALID)
 346       goto error2;
 347
 348    SVGA_DBG(DEBUG_DMA, "surface_create for texture\n", tex->handle);
 349    tex->handle = svga_screen_surface_create(svgascreen, &tex->key);
 350    if (tex->handle)
 351       SVGA_DBG(DEBUG_DMA, "  --> got sid %p (texture)\n", tex->handle);
 352
 353    return &tex->base;
 354
 355 error2:
 356    FREE(tex);
 357 error1:
 358    return NULL;
 359 }
 360
 361
 362
 363
 364
 365 static struct pipe_texture *
 366 svga_screen_texture_from_handle(struct pipe_screen *screen,
 367                                 const struct pipe_texture *base,
 368                                 struct winsys_handle *whandle)
 369 {
 370    struct svga_winsys_screen *sws = svga_winsys_screen(screen);
 371    struct svga_winsys_surface *srf;
 372    struct svga_texture *tex;
 373    enum SVGA3dSurfaceFormat format = 0;
 374    assert(screen);
 375
 376    /* Only supports one type */
 377    if (base->target != PIPE_TEXTURE_2D ||
 378        base->last_level != 0 ||
 379        base->depth0 != 1) {
 380       return NULL;
 381    }
 382
 383    srf = sws->surface_from_handle(sws, whandle, &format);
 384
 385    if (!srf)
 386       return NULL;
 387
 388    if (svga_translate_format(base->format) != format) {
 389       unsigned f1 = svga_translate_format(base->format);
 390       unsigned f2 = format;
 391
 392       /* It's okay for XRGB and ARGB or depth with/out stencil to get mixed up */
 393       if ( !( (f1 == SVGA3D_X8R8G8B8 && f2 == SVGA3D_A8R8G8B8) ||
 394               (f1 == SVGA3D_A8R8G8B8 && f2 == SVGA3D_X8R8G8B8) ||
 395               (f1 == SVGA3D_Z_D24X8 && f2 == SVGA3D_Z_D24S8) ) ) {
 396          debug_printf("%s wrong format %u != %u\n", __FUNCTION__, f1, f2);
 397          return NULL;
 398       }
 399    }
 400
 401    tex = CALLOC_STRUCT(svga_texture);
 402    if (!tex)
 403       return NULL;
 404
 405    tex->base = *base;
 406
 407
 408    if (format == 1)
 409       tex->base.format = PIPE_FORMAT_B8G8R8X8_UNORM;
 410    else if (format == 2)
 411       tex->base.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 412
 413    pipe_reference_init(&tex->base.reference, 1);
 414    tex->base.screen = screen;
 415
 416    SVGA_DBG(DEBUG_DMA, "wrap surface sid %p\n", srf);
 417
 418    tex->key.cachable = 0;
 419    tex->handle = srf;
 420
 421    return &tex->base;
 422 }
 423
 424
 425 static boolean
 426 svga_screen_texture_get_handle(struct pipe_screen *screen,
 427                                struct pipe_texture *texture,
 428                                struct winsys_handle *whandle)
 429 {
 430    struct svga_winsys_screen *sws = svga_winsys_screen(texture->screen);
 431    unsigned stride;
 432
 433    assert(svga_texture(texture)->key.cachable == 0);
 434    svga_texture(texture)->key.cachable = 0;
 435    stride = util_format_get_nblocksx(texture->format, texture->width0) *
 436             util_format_get_blocksize(texture->format);
 437    return sws->surface_get_handle(sws, svga_texture(texture)->handle, stride, whandle);
 438 }
 439
 440
 441 static void
 442 svga_texture_destroy(struct pipe_texture *pt)
 443 {
 444    struct svga_screen *ss = svga_screen(pt->screen);
 445    struct svga_texture *tex = (struct svga_texture *)pt;
 446
 447    ss->texture_timestamp++;
 448
 449    svga_sampler_view_reference(&tex->cached_view, NULL);
 450
 451    /*
 452      DBG("%s deleting %p\n", __FUNCTION__, (void *) tex);
 453    */
 454    SVGA_DBG(DEBUG_DMA, "unref sid %p (texture)\n", tex->handle);
 455    svga_screen_surface_destroy(ss, &tex->key, &tex->handle);
 456
 457    FREE(tex);
 458 }
 459
 460
 461 static void
 462 svga_texture_copy_handle(struct svga_context *svga,
 463                          struct svga_screen *ss,
 464                          struct svga_winsys_surface *src_handle,
 465                          unsigned src_x, unsigned src_y, unsigned src_z,
 466                          unsigned src_level, unsigned src_face,
 467                          struct svga_winsys_surface *dst_handle,
 468                          unsigned dst_x, unsigned dst_y, unsigned dst_z,
 469                          unsigned dst_level, unsigned dst_face,
 470                          unsigned width, unsigned height, unsigned depth)
 471 {
 472    struct svga_surface dst, src;
 473    enum pipe_error ret;
 474    SVGA3dCopyBox box, *boxes;
 475
 476    assert(svga || ss);
 477
 478    src.handle = src_handle;
 479    src.real_level = src_level;
 480    src.real_face = src_face;
 481    src.real_zslice = 0;
 482
 483    dst.handle = dst_handle;
 484    dst.real_level = dst_level;
 485    dst.real_face = dst_face;
 486    dst.real_zslice = 0;
 487
 488    box.x = dst_x;
 489    box.y = dst_y;
 490    box.z = dst_z;
 491    box.w = width;
 492    box.h = height;
 493    box.d = depth;
 494    box.srcx = src_x;
 495    box.srcy = src_y;
 496    box.srcz = src_z;
 497
 498 /*
 499    SVGA_DBG(DEBUG_VIEWS, "mipcopy src: %p %u (%ux%ux%u), dst: %p %u (%ux%ux%u)\n",
 500             src_handle, src_level, src_x, src_y, src_z,
 501             dst_handle, dst_level, dst_x, dst_y, dst_z);
 502 */
 503
 504    if (svga) {
 505       ret = SVGA3D_BeginSurfaceCopy(svga->swc,
 506                                     &src.base,
 507                                     &dst.base,
 508                                     &boxes, 1);
 509       if(ret != PIPE_OK) {
 510          svga_context_flush(svga, NULL);
 511          ret = SVGA3D_BeginSurfaceCopy(svga->swc,
 512                                        &src.base,
 513                                        &dst.base,
 514                                        &boxes, 1);
 515          assert(ret == PIPE_OK);
 516       }
 517       *boxes = box;
 518       SVGA_FIFOCommitAll(svga->swc);
 519    } else {
 520       pipe_mutex_lock(ss->swc_mutex);
 521       ret = SVGA3D_BeginSurfaceCopy(ss->swc,
 522                                     &src.base,
 523                                     &dst.base,
 524                                     &boxes, 1);
 525       if(ret != PIPE_OK) {
 526          ss->swc->flush(ss->swc, NULL);
 527          ret = SVGA3D_BeginSurfaceCopy(ss->swc,
 528                                        &src.base,
 529                                        &dst.base,
 530                                        &boxes, 1);
 531          assert(ret == PIPE_OK);
 532       }
 533       *boxes = box;
 534       SVGA_FIFOCommitAll(ss->swc);
 535       pipe_mutex_unlock(ss->swc_mutex);
 536    }
 537 }
 538
 539 static struct svga_winsys_surface *
 540 svga_texture_view_surface(struct pipe_context *pipe,
 541                           struct svga_texture *tex,
 542                           SVGA3dSurfaceFormat format,
 543                           unsigned start_mip,
 544                           unsigned num_mip,
 545                           int face_pick,
 546                           int zslice_pick,
 547                           struct svga_host_surface_cache_key *key) /* OUT */
 548 {
 549    struct svga_screen *ss = svga_screen(tex->base.screen);
 550    struct svga_winsys_surface *handle;
 551    uint32_t i, j;
 552    unsigned z_offset = 0;
 553
 554    SVGA_DBG(DEBUG_PERF,
 555             "svga: Create surface view: face %d zslice %d mips %d..%d\n",
 556             face_pick, zslice_pick, start_mip, start_mip+num_mip-1);
 557
 558    key->flags = 0;
 559    key->format = format;
 560    key->numMipLevels = num_mip;
 561    key->size.width = u_minify(tex->base.width0, start_mip);
 562    key->size.height = u_minify(tex->base.height0, start_mip);
 563    key->size.depth = zslice_pick < 0 ? u_minify(tex->base.depth0, start_mip) : 1;
 564    key->cachable = 1;
 565    assert(key->size.depth == 1);
 566
 567    if(tex->base.target == PIPE_TEXTURE_CUBE && face_pick < 0) {
 568       key->flags |= SVGA3D_SURFACE_CUBEMAP;
 569       key->numFaces = 6;
 570    } else {
 571       key->numFaces = 1;
 572    }
 573
 574    if(key->format == SVGA3D_FORMAT_INVALID) {
 575       key->cachable = 0;
 576       return NULL;
 577    }
 578
 579    SVGA_DBG(DEBUG_DMA, "surface_create for texture view\n");
 580    handle = svga_screen_surface_create(ss, key);
 581    if (!handle) {
 582       key->cachable = 0;
 583       return NULL;
 584    }
 585
 586    SVGA_DBG(DEBUG_DMA, " --> got sid %p (texture view)\n", handle);
 587
 588    if (face_pick < 0)
 589       face_pick = 0;
 590
 591    if (zslice_pick >= 0)
 592        z_offset = zslice_pick;
 593
 594    for (i = 0; i < key->numMipLevels; i++) {
 595       for (j = 0; j < key->numFaces; j++) {
 596          if(tex->defined[j + face_pick][i + start_mip]) {
 597             unsigned depth = (zslice_pick < 0 ?
 598                               u_minify(tex->base.depth0, i + start_mip) :
 599                               1);
 600
 601             svga_texture_copy_handle(svga_context(pipe),
 602                                      ss,
 603                                      tex->handle,
 604                                      0, 0, z_offset,
 605                                      i + start_mip,
 606                                      j + face_pick,
 607                                      handle, 0, 0, 0, i, j,
 608                                      u_minify(tex->base.width0, i + start_mip),
 609                                      u_minify(tex->base.height0, i + start_mip),
 610                                      depth);
 611          }
 612       }
 613    }
 614
 615    return handle;
 616 }
 617
 618
 619 static struct pipe_surface *
 620 svga_get_tex_surface(struct pipe_screen *screen,
 621                      struct pipe_texture *pt,
 622                      unsigned face, unsigned level, unsigned zslice,
 623                      unsigned flags)
 624 {
 625    struct svga_texture *tex = svga_texture(pt);
 626    struct svga_surface *s;
 627    boolean render = flags & PIPE_BUFFER_USAGE_GPU_WRITE ? TRUE : FALSE;
 628    boolean view = FALSE;
 629    SVGA3dSurfaceFormat format;
 630
 631    s = CALLOC_STRUCT(svga_surface);
 632    if (!s)
 633       return NULL;
 634
 635    pipe_reference_init(&s->base.reference, 1);
 636    pipe_texture_reference(&s->base.texture, pt);
 637    s->base.format = pt->format;
 638    s->base.width = u_minify(pt->width0, level);
 639    s->base.height = u_minify(pt->height0, level);
 640    s->base.usage = flags;
 641    s->base.level = level;
 642    s->base.face = face;
 643    s->base.zslice = zslice;
 644
 645    if (!render)
 646       format = svga_translate_format(pt->format);
 647    else
 648       format = svga_translate_format_render(pt->format);
 649
 650    assert(format != SVGA3D_FORMAT_INVALID);
 651    assert(!(flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE));
 652
 653
 654    if (svga_screen(screen)->debug.force_surface_view)
 655       view = TRUE;
 656
 657    /* Currently only used for compressed textures */
 658    if (render &&
 659        format != svga_translate_format(pt->format)) {
 660       view = TRUE;
 661    }
 662
 663    if (level != 0 &&
 664        svga_screen(screen)->debug.force_level_surface_view)
 665       view = TRUE;
 666
 667    if (pt->target == PIPE_TEXTURE_3D)
 668       view = TRUE;
 669
 670    if (svga_screen(screen)->debug.no_surface_view)
 671       view = FALSE;
 672
 673    if (view) {
 674       SVGA_DBG(DEBUG_VIEWS, "svga: Surface view: yes %p, level %u face %u z %u, %p\n",
 675                pt, level, face, zslice, s);
 676
 677       s->handle = svga_texture_view_surface(NULL, tex, format, level, 1, face, zslice,
 678                                             &s->key);
 679       s->real_face = 0;
 680       s->real_level = 0;
 681       s->real_zslice = 0;
 682    } else {
 683       SVGA_DBG(DEBUG_VIEWS, "svga: Surface view: no %p, level %u, face %u, z %u, %p\n",
 684                pt, level, face, zslice, s);
 685
 686       memset(&s->key, 0, sizeof s->key);
 687       s->handle = tex->handle;
 688       s->real_face = face;
 689       s->real_level = level;
 690       s->real_zslice = zslice;
 691    }
 692
 693    return &s->base;
 694 }
 695
 696
 697 static void
 698 svga_tex_surface_destroy(struct pipe_surface *surf)
 699 {
 700    struct svga_surface *s = svga_surface(surf);
 701    struct svga_texture *t = svga_texture(surf->texture);
 702    struct svga_screen *ss = svga_screen(surf->texture->screen);
 703
 704    if(s->handle != t->handle) {
 705       SVGA_DBG(DEBUG_DMA, "unref sid %p (tex surface)\n", s->handle);
 706       svga_screen_surface_destroy(ss, &s->key, &s->handle);
 707    }
 708
 709    pipe_texture_reference(&surf->texture, NULL);
 710    FREE(surf);
 711 }
 712
 713
 714 static INLINE void
 715 svga_mark_surface_dirty(struct pipe_surface *surf)
 716 {
 717    struct svga_surface *s = svga_surface(surf);
 718
 719    if(!s->dirty) {
 720       struct svga_texture *tex = svga_texture(surf->texture);
 721
 722       s->dirty = TRUE;
 723
 724       if (s->handle == tex->handle)
 725          tex->defined[surf->face][surf->level] = TRUE;
 726       else {
 727          /* this will happen later in svga_propagate_surface */
 728       }
 729    }
 730 }
 731
 732
 733 void svga_mark_surfaces_dirty(struct svga_context *svga)
 734 {
 735    unsigned i;
 736
 737    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 738       if (svga->curr.framebuffer.cbufs[i])
 739          svga_mark_surface_dirty(svga->curr.framebuffer.cbufs[i]);
 740    }
 741    if (svga->curr.framebuffer.zsbuf)
 742       svga_mark_surface_dirty(svga->curr.framebuffer.zsbuf);
 743 }
 744
 745 /**
 746  * Progagate any changes from surfaces to texture.
 747  * pipe is optional context to inline the blit command in.
 748  */
 749 void
 750 svga_propagate_surface(struct pipe_context *pipe, struct pipe_surface *surf)
 751 {
 752    struct svga_surface *s = svga_surface(surf);
 753    struct svga_texture *tex = svga_texture(surf->texture);
 754    struct svga_screen *ss = svga_screen(surf->texture->screen);
 755
 756    if (!s->dirty)
 757       return;
 758
 759    s->dirty = FALSE;
 760    ss->texture_timestamp++;
 761    tex->view_age[surf->level] = ++(tex->age);
 762
 763    if (s->handle != tex->handle) {
 764       SVGA_DBG(DEBUG_VIEWS, "svga: Surface propagate: tex %p, level %u, from %p\n", tex, surf->level, surf);
 765       svga_texture_copy_handle(svga_context(pipe), ss,
 766                                s->handle, 0, 0, 0, s->real_level, s->real_face,
 767                                tex->handle, 0, 0, surf->zslice, surf->level, surf->face,
 768                                u_minify(tex->base.width0, surf->level),
 769                                u_minify(tex->base.height0, surf->level), 1);
 770       tex->defined[surf->face][surf->level] = TRUE;
 771    }
 772 }
 773
 774 /**
 775  * Check if we should call svga_propagate_surface on the surface.
 776  */
 777 extern boolean
 778 svga_surface_needs_propagation(struct pipe_surface *surf)
 779 {
 780    struct svga_surface *s = svga_surface(surf);
 781    struct svga_texture *tex = svga_texture(surf->texture);
 782
 783    return s->dirty && s->handle != tex->handle;
 784 }
 785
 786
 787 static struct pipe_transfer *
 788 svga_get_tex_transfer(struct pipe_screen *screen,
 789                      struct pipe_texture *texture,
 790                      unsigned face, unsigned level, unsigned zslice,
 791                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
 792                      unsigned w, unsigned h)
 793 {
 794    struct svga_screen *ss = svga_screen(screen);
 795    struct svga_winsys_screen *sws = ss->sws;
 796    struct svga_transfer *st;
 797    unsigned nblocksx = util_format_get_nblocksx(texture->format, w);
 798    unsigned nblocksy = util_format_get_nblocksy(texture->format, h);
 799
 800    /* We can't map texture storage directly */
 801    if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 802       return NULL;
 803
 804    st = CALLOC_STRUCT(svga_transfer);
 805    if (!st)
 806       return NULL;
 807
 808    st->base.x = x;
 809    st->base.y = y;
 810    st->base.width = w;
 811    st->base.height = h;
 812    st->base.stride = nblocksx*util_format_get_blocksize(texture->format);
 813    st->base.usage = usage;
 814    st->base.face = face;
 815    st->base.level = level;
 816    st->base.zslice = zslice;
 817
 818    st->hw_nblocksy = nblocksy;
 819
 820    st->hwbuf = svga_winsys_buffer_create(ss,
 821                                          1,
 822                                          0,
 823                                          st->hw_nblocksy*st->base.stride);
 824    while(!st->hwbuf && (st->hw_nblocksy /= 2)) {
 825       st->hwbuf = svga_winsys_buffer_create(ss,
 826                                             1,
 827                                             0,
 828                                             st->hw_nblocksy*st->base.stride);
 829    }
 830
 831    if(!st->hwbuf)
 832       goto no_hwbuf;
 833
 834    if(st->hw_nblocksy < nblocksy) {
 835       /* We couldn't allocate a hardware buffer big enough for the transfer,
 836        * so allocate regular malloc memory instead */
 837       debug_printf("%s: failed to allocate %u KB of DMA, splitting into %u x %u KB DMA transfers\n",
 838                    __FUNCTION__,
 839                    (nblocksy*st->base.stride + 1023)/1024,
 840                    (nblocksy + st->hw_nblocksy - 1)/st->hw_nblocksy,
 841                    (st->hw_nblocksy*st->base.stride + 1023)/1024);
 842       st->swbuf = MALLOC(nblocksy*st->base.stride);
 843       if(!st->swbuf)
 844          goto no_swbuf;
 845    }
 846
 847    pipe_texture_reference(&st->base.texture, texture);
 848
 849    if (usage & PIPE_TRANSFER_READ)
 850       svga_transfer_dma(st, SVGA3D_READ_HOST_VRAM);
 851
 852    return &st->base;
 853
 854 no_swbuf:
 855    sws->buffer_destroy(sws, st->hwbuf);
 856 no_hwbuf:
 857    FREE(st);
 858    return NULL;
 859 }
 860
 861
 862 static void *
 863 svga_transfer_map( struct pipe_screen *screen,
 864                    struct pipe_transfer *transfer )
 865 {
 866    struct svga_screen *ss = svga_screen(screen);
 867    struct svga_winsys_screen *sws = ss->sws;
 868    struct svga_transfer *st = svga_transfer(transfer);
 869
 870    if(st->swbuf)
 871       return st->swbuf;
 872    else
 873       /* The wait for read transfers already happened when svga_transfer_dma
 874        * was called. */
 875       return sws->buffer_map(sws, st->hwbuf,
 876                              pipe_transfer_buffer_flags(transfer));
 877 }
 878
 879
 880 static void
 881 svga_transfer_unmap(struct pipe_screen *screen,
 882                     struct pipe_transfer *transfer)
 883 {
 884    struct svga_screen *ss = svga_screen(screen);
 885    struct svga_winsys_screen *sws = ss->sws;
 886    struct svga_transfer *st = svga_transfer(transfer);
 887
 888    if(!st->swbuf)
 889       sws->buffer_unmap(sws, st->hwbuf);
 890 }
 891
 892
 893 static void
 894 svga_tex_transfer_destroy(struct pipe_transfer *transfer)
 895 {
 896    struct svga_texture *tex = svga_texture(transfer->texture);
 897    struct svga_screen *ss = svga_screen(transfer->texture->screen);
 898    struct svga_winsys_screen *sws = ss->sws;
 899    struct svga_transfer *st = svga_transfer(transfer);
 900
 901    if (st->base.usage & PIPE_TRANSFER_WRITE) {
 902       svga_transfer_dma(st, SVGA3D_WRITE_HOST_VRAM);
 903       ss->texture_timestamp++;
 904       tex->view_age[transfer->level] = ++(tex->age);
 905       tex->defined[transfer->face][transfer->level] = TRUE;
 906    }
 907
 908    pipe_texture_reference(&st->base.texture, NULL);
 909    FREE(st->swbuf);
 910    sws->buffer_destroy(sws, st->hwbuf);
 911    FREE(st);
 912 }
 913
 914 void
 915 svga_screen_init_texture_functions(struct pipe_screen *screen)
 916 {
 917    screen->texture_create = svga_texture_create;
 918    screen->texture_from_handle = svga_screen_texture_from_handle;
 919    screen->texture_get_handle = svga_screen_texture_get_handle;
 920    screen->texture_destroy = svga_texture_destroy;
 921    screen->get_tex_surface = svga_get_tex_surface;
 922    screen->tex_surface_destroy = svga_tex_surface_destroy;
 923    screen->get_tex_transfer = svga_get_tex_transfer;
 924    screen->transfer_map = svga_transfer_map;
 925    screen->transfer_unmap = svga_transfer_unmap;
 926    screen->tex_transfer_destroy = svga_tex_transfer_destroy;
 927 }
 928
 929 /***********************************************************************
 930  */
 931
 932 struct svga_sampler_view *
 933 svga_get_tex_sampler_view(struct pipe_context *pipe, struct pipe_texture *pt,
 934                           unsigned min_lod, unsigned max_lod)
 935 {
 936    struct svga_screen *ss = svga_screen(pt->screen);
 937    struct svga_texture *tex = svga_texture(pt);
 938    struct svga_sampler_view *sv = NULL;
 939    SVGA3dSurfaceFormat format = svga_translate_format(pt->format);
 940    boolean view = TRUE;
 941
 942    assert(pt);
 943    assert(min_lod >= 0);
 944    assert(min_lod <= max_lod);
 945    assert(max_lod <= pt->last_level);
 946
 947
 948    /* Is a view needed */
 949    {
 950       /*
 951        * Can't control max lod. For first level views and when we only
 952        * look at one level we disable mip filtering to achive the same
 953        * results as a view.
 954        */
 955       if (min_lod == 0 && max_lod >= pt->last_level)
 956          view = FALSE;
 957
 958       if (util_format_is_compressed(pt->format) && view) {
 959          format = svga_translate_format_render(pt->format);
 960       }
 961
 962       if (ss->debug.no_sampler_view)
 963          view = FALSE;
 964
 965       if (ss->debug.force_sampler_view)
 966          view = TRUE;
 967    }
 968
 969    /* First try the cache */
 970    if (view) {
 971       pipe_mutex_lock(ss->tex_mutex);
 972       if (tex->cached_view &&
 973           tex->cached_view->min_lod == min_lod &&
 974           tex->cached_view->max_lod == max_lod) {
 975          svga_sampler_view_reference(&sv, tex->cached_view);
 976          pipe_mutex_unlock(ss->tex_mutex);
 977          SVGA_DBG(DEBUG_VIEWS, "svga: Sampler view: reuse %p, %u %u, last %u\n",
 978                               pt, min_lod, max_lod, pt->last_level);
 979          svga_validate_sampler_view(svga_context(pipe), sv);
 980          return sv;
 981       }
 982       pipe_mutex_unlock(ss->tex_mutex);
 983    }
 984
 985    sv = CALLOC_STRUCT(svga_sampler_view);
 986    pipe_reference_init(&sv->reference, 1);
 987    pipe_texture_reference(&sv->texture, pt);
 988    sv->min_lod = min_lod;
 989    sv->max_lod = max_lod;
 990
 991    /* No view needed just use the whole texture */
 992    if (!view) {
 993       SVGA_DBG(DEBUG_VIEWS,
 994                "svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
 995                pt, min_lod, max_lod,
 996                max_lod - min_lod + 1,
 997                pt->width0,
 998                pt->height0,
 999                pt->depth0,
1000                pt->last_level);
1001       sv->key.cachable = 0;
1002       sv->handle = tex->handle;
1003       return sv;
1004    }
1005
1006    SVGA_DBG(DEBUG_VIEWS,
1007             "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
1008             pt, min_lod, max_lod,
1009             max_lod - min_lod + 1,
1010             pt->width0,
1011             pt->height0,
1012             pt->depth0,
1013             pt->last_level);
1014
1015    sv->age = tex->age;
1016    sv->handle = svga_texture_view_surface(pipe, tex, format,
1017                                           min_lod,
1018                                           max_lod - min_lod + 1,
1019                                           -1, -1,
1020                                           &sv->key);
1021
1022    if (!sv->handle) {
1023       assert(0);
1024       sv->key.cachable = 0;
1025       sv->handle = tex->handle;
1026       return sv;
1027    }
1028
1029    pipe_mutex_lock(ss->tex_mutex);
1030    svga_sampler_view_reference(&tex->cached_view, sv);
1031    pipe_mutex_unlock(ss->tex_mutex);
1032
1033    return sv;
1034 }
1035
1036 void
1037 svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *v)
1038 {
1039    struct svga_texture *tex = svga_texture(v->texture);
1040    unsigned numFaces;
1041    unsigned age = 0;
1042    int i, k;
1043
1044    assert(svga);
1045
1046    if (v->handle == tex->handle)
1047       return;
1048
1049    age = tex->age;
1050
1051    if(tex->base.target == PIPE_TEXTURE_CUBE)
1052       numFaces = 6;
1053    else
1054       numFaces = 1;
1055
1056    for (i = v->min_lod; i <= v->max_lod; i++) {
1057       for (k = 0; k < numFaces; k++) {
1058          if (v->age < tex->view_age[i])
1059             svga_texture_copy_handle(svga, NULL,
1060                                      tex->handle, 0, 0, 0, i, k,
1061                                      v->handle, 0, 0, 0, i - v->min_lod, k,
1062                                      u_minify(tex->base.width0, i),
1063                                      u_minify(tex->base.height0, i),
1064                                      u_minify(tex->base.depth0, i));
1065       }
1066    }
1067
1068    v->age = age;
1069 }
1070
1071 void
1072 svga_destroy_sampler_view_priv(struct svga_sampler_view *v)
1073 {
1074    struct svga_texture *tex = svga_texture(v->texture);
1075
1076    if(v->handle != tex->handle) {
1077       struct svga_screen *ss = svga_screen(v->texture->screen);
1078       SVGA_DBG(DEBUG_DMA, "unref sid %p (sampler view)\n", v->handle);
1079       svga_screen_surface_destroy(ss, &v->key, &v->handle);
1080    }
1081    pipe_texture_reference(&v->texture, NULL);
1082    FREE(v);
1083 }