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_A8R8G8B8_UNORM:
  63       return SVGA3D_A8R8G8B8;
  64    case PIPE_FORMAT_X8R8G8B8_UNORM:
  65       return SVGA3D_X8R8G8B8;
  66
  67       /* Required for GL2.1:
  68        */
  69    case PIPE_FORMAT_A8R8G8B8_SRGB:
  70       return SVGA3D_A8R8G8B8;
  71
  72    case PIPE_FORMAT_R5G6B5_UNORM:
  73       return SVGA3D_R5G6B5;
  74    case PIPE_FORMAT_A1R5G5B5_UNORM:
  75       return SVGA3D_A1R5G5B5;
  76    case PIPE_FORMAT_A4R4G4B4_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_Z24S8_UNORM:
  87       return SVGA3D_Z_D24S8;
  88    case PIPE_FORMAT_Z24X8_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_A8R8G8B8_UNORM:
 115    case PIPE_FORMAT_X8R8G8B8_UNORM:
 116    case PIPE_FORMAT_A1R5G5B5_UNORM:
 117    case PIPE_FORMAT_A4R4G4B4_UNORM:
 118    case PIPE_FORMAT_R5G6B5_UNORM:
 119    case PIPE_FORMAT_Z24S8_UNORM:
 120    case PIPE_FORMAT_Z24X8_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 static struct pipe_texture *
 363 svga_texture_blanket(struct pipe_screen * screen,
 364                      const struct pipe_texture *base,
 365                      const unsigned *stride,
 366                      struct pipe_buffer *buffer)
 367 {
 368    struct svga_texture *tex;
 369    struct svga_buffer *sbuf = svga_buffer(buffer);
 370    struct svga_winsys_screen *sws = svga_winsys_screen(screen);
 371    assert(screen);
 372
 373    /* Only supports one type */
 374    if (base->target != PIPE_TEXTURE_2D ||
 375        base->last_level != 0 ||
 376        base->depth0 != 1) {
 377       return NULL;
 378    }
 379
 380    /**
 381     * We currently can't do texture blanket on
 382     * SVGA3D_BUFFER. Need to blit to a temporary surface?
 383     */
 384
 385    assert(sbuf->handle);
 386    if (!sbuf->handle)
 387       return NULL;
 388
 389    if (svga_translate_format(base->format) != sbuf->key.format) {
 390       unsigned f1 = svga_translate_format(base->format);
 391       unsigned f2 = sbuf->key.format;
 392
 393       /* It's okay for XRGB and ARGB or depth with/out stencil to get mixed up */
 394       if ( !( (f1 == SVGA3D_X8R8G8B8 && f2 == SVGA3D_A8R8G8B8) ||
 395               (f1 == SVGA3D_A8R8G8B8 && f2 == SVGA3D_X8R8G8B8) ||
 396               (f1 == SVGA3D_Z_D24X8 && f2 == SVGA3D_Z_D24S8) ) ) {
 397          debug_printf("%s wrong format %u != %u\n", __FUNCTION__, f1, f2);
 398          return NULL;
 399       }
 400    }
 401
 402    tex = CALLOC_STRUCT(svga_texture);
 403    if (!tex)
 404       return NULL;
 405
 406    tex->base = *base;
 407
 408
 409    if (sbuf->key.format == 1)
 410       tex->base.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 411    else if (sbuf->key.format == 2)
 412       tex->base.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 413
 414    pipe_reference_init(&tex->base.reference, 1);
 415    tex->base.screen = screen;
 416
 417    SVGA_DBG(DEBUG_DMA, "blanket sid %p\n", sbuf->handle);
 418
 419    /* We don't own this storage, so don't try to cache it.
 420     */
 421    assert(sbuf->key.cachable == 0);
 422    tex->key.cachable = 0;
 423    sws->surface_reference(sws, &tex->handle, sbuf->handle);
 424
 425    return &tex->base;
 426 }
 427
 428
 429 static struct pipe_texture *
 430 svga_screen_texture_from_handle(struct pipe_screen *screen,
 431                                 const struct pipe_texture *base,
 432                                 struct winsys_handle *whandle)
 433 {
 434    struct svga_winsys_screen *sws = svga_winsys_screen(screen);
 435    struct svga_winsys_surface *srf;
 436    struct svga_texture *tex;
 437    enum SVGA3dSurfaceFormat format = 0;
 438    assert(screen);
 439
 440    /* Only supports one type */
 441    if (base->target != PIPE_TEXTURE_2D ||
 442        base->last_level != 0 ||
 443        base->depth0 != 1) {
 444       return NULL;
 445    }
 446
 447    srf = sws->surface_from_handle(sws, whandle, &format);
 448
 449    if (!srf)
 450       return NULL;
 451
 452    if (svga_translate_format(base->format) != format) {
 453       unsigned f1 = svga_translate_format(base->format);
 454       unsigned f2 = format;
 455
 456       /* It's okay for XRGB and ARGB or depth with/out stencil to get mixed up */
 457       if ( !( (f1 == SVGA3D_X8R8G8B8 && f2 == SVGA3D_A8R8G8B8) ||
 458               (f1 == SVGA3D_A8R8G8B8 && f2 == SVGA3D_X8R8G8B8) ||
 459               (f1 == SVGA3D_Z_D24X8 && f2 == SVGA3D_Z_D24S8) ) ) {
 460          debug_printf("%s wrong format %u != %u\n", __FUNCTION__, f1, f2);
 461          return NULL;
 462       }
 463    }
 464
 465    tex = CALLOC_STRUCT(svga_texture);
 466    if (!tex)
 467       return NULL;
 468
 469    tex->base = *base;
 470
 471
 472    if (format == 1)
 473       tex->base.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 474    else if (format == 2)
 475       tex->base.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 476
 477    pipe_reference_init(&tex->base.reference, 1);
 478    tex->base.screen = screen;
 479
 480    SVGA_DBG(DEBUG_DMA, "wrap surface sid %p\n", srf);
 481
 482    tex->key.cachable = 0;
 483    tex->handle = srf;
 484
 485    return &tex->base;
 486 }
 487
 488
 489 static boolean
 490 svga_screen_texture_get_handle(struct pipe_screen *screen,
 491                                struct pipe_texture *texture,
 492                                struct winsys_handle *whandle)
 493 {
 494    struct svga_winsys_screen *sws = svga_winsys_screen(texture->screen);
 495    unsigned stride;
 496
 497    assert(svga_texture(texture)->key.cachable == 0);
 498    svga_texture(texture)->key.cachable = 0;
 499    stride = util_format_get_nblocksx(texture->format, texture->width0) *
 500             util_format_get_blocksize(texture->format);
 501    return sws->surface_get_handle(sws, svga_texture(texture)->handle, stride, whandle);
 502 }
 503
 504
 505 static void
 506 svga_texture_destroy(struct pipe_texture *pt)
 507 {
 508    struct svga_screen *ss = svga_screen(pt->screen);
 509    struct svga_texture *tex = (struct svga_texture *)pt;
 510
 511    ss->texture_timestamp++;
 512
 513    svga_sampler_view_reference(&tex->cached_view, NULL);
 514
 515    /*
 516      DBG("%s deleting %p\n", __FUNCTION__, (void *) tex);
 517    */
 518    SVGA_DBG(DEBUG_DMA, "unref sid %p (texture)\n", tex->handle);
 519    svga_screen_surface_destroy(ss, &tex->key, &tex->handle);
 520
 521    FREE(tex);
 522 }
 523
 524
 525 static void
 526 svga_texture_copy_handle(struct svga_context *svga,
 527                          struct svga_screen *ss,
 528                          struct svga_winsys_surface *src_handle,
 529                          unsigned src_x, unsigned src_y, unsigned src_z,
 530                          unsigned src_level, unsigned src_face,
 531                          struct svga_winsys_surface *dst_handle,
 532                          unsigned dst_x, unsigned dst_y, unsigned dst_z,
 533                          unsigned dst_level, unsigned dst_face,
 534                          unsigned width, unsigned height, unsigned depth)
 535 {
 536    struct svga_surface dst, src;
 537    enum pipe_error ret;
 538    SVGA3dCopyBox box, *boxes;
 539
 540    assert(svga || ss);
 541
 542    src.handle = src_handle;
 543    src.real_level = src_level;
 544    src.real_face = src_face;
 545    src.real_zslice = 0;
 546
 547    dst.handle = dst_handle;
 548    dst.real_level = dst_level;
 549    dst.real_face = dst_face;
 550    dst.real_zslice = 0;
 551
 552    box.x = dst_x;
 553    box.y = dst_y;
 554    box.z = dst_z;
 555    box.w = width;
 556    box.h = height;
 557    box.d = depth;
 558    box.srcx = src_x;
 559    box.srcy = src_y;
 560    box.srcz = src_z;
 561
 562 /*
 563    SVGA_DBG(DEBUG_VIEWS, "mipcopy src: %p %u (%ux%ux%u), dst: %p %u (%ux%ux%u)\n",
 564             src_handle, src_level, src_x, src_y, src_z,
 565             dst_handle, dst_level, dst_x, dst_y, dst_z);
 566 */
 567
 568    if (svga) {
 569       ret = SVGA3D_BeginSurfaceCopy(svga->swc,
 570                                     &src.base,
 571                                     &dst.base,
 572                                     &boxes, 1);
 573       if(ret != PIPE_OK) {
 574          svga_context_flush(svga, NULL);
 575          ret = SVGA3D_BeginSurfaceCopy(svga->swc,
 576                                        &src.base,
 577                                        &dst.base,
 578                                        &boxes, 1);
 579          assert(ret == PIPE_OK);
 580       }
 581       *boxes = box;
 582       SVGA_FIFOCommitAll(svga->swc);
 583    } else {
 584       pipe_mutex_lock(ss->swc_mutex);
 585       ret = SVGA3D_BeginSurfaceCopy(ss->swc,
 586                                     &src.base,
 587                                     &dst.base,
 588                                     &boxes, 1);
 589       if(ret != PIPE_OK) {
 590          ss->swc->flush(ss->swc, NULL);
 591          ret = SVGA3D_BeginSurfaceCopy(ss->swc,
 592                                        &src.base,
 593                                        &dst.base,
 594                                        &boxes, 1);
 595          assert(ret == PIPE_OK);
 596       }
 597       *boxes = box;
 598       SVGA_FIFOCommitAll(ss->swc);
 599       pipe_mutex_unlock(ss->swc_mutex);
 600    }
 601 }
 602
 603 static struct svga_winsys_surface *
 604 svga_texture_view_surface(struct pipe_context *pipe,
 605                           struct svga_texture *tex,
 606                           SVGA3dSurfaceFormat format,
 607                           unsigned start_mip,
 608                           unsigned num_mip,
 609                           int face_pick,
 610                           int zslice_pick,
 611                           struct svga_host_surface_cache_key *key) /* OUT */
 612 {
 613    struct svga_screen *ss = svga_screen(tex->base.screen);
 614    struct svga_winsys_surface *handle;
 615    uint32_t i, j;
 616    unsigned z_offset = 0;
 617
 618    SVGA_DBG(DEBUG_PERF,
 619             "svga: Create surface view: face %d zslice %d mips %d..%d\n",
 620             face_pick, zslice_pick, start_mip, start_mip+num_mip-1);
 621
 622    key->flags = 0;
 623    key->format = format;
 624    key->numMipLevels = num_mip;
 625    key->size.width = u_minify(tex->base.width0, start_mip);
 626    key->size.height = u_minify(tex->base.height0, start_mip);
 627    key->size.depth = zslice_pick < 0 ? u_minify(tex->base.depth0, start_mip) : 1;
 628    key->cachable = 1;
 629    assert(key->size.depth == 1);
 630
 631    if(tex->base.target == PIPE_TEXTURE_CUBE && face_pick < 0) {
 632       key->flags |= SVGA3D_SURFACE_CUBEMAP;
 633       key->numFaces = 6;
 634    } else {
 635       key->numFaces = 1;
 636    }
 637
 638    if(key->format == SVGA3D_FORMAT_INVALID) {
 639       key->cachable = 0;
 640       return NULL;
 641    }
 642
 643    SVGA_DBG(DEBUG_DMA, "surface_create for texture view\n");
 644    handle = svga_screen_surface_create(ss, key);
 645    if (!handle) {
 646       key->cachable = 0;
 647       return NULL;
 648    }
 649
 650    SVGA_DBG(DEBUG_DMA, " --> got sid %p (texture view)\n", handle);
 651
 652    if (face_pick < 0)
 653       face_pick = 0;
 654
 655    if (zslice_pick >= 0)
 656        z_offset = zslice_pick;
 657
 658    for (i = 0; i < key->numMipLevels; i++) {
 659       for (j = 0; j < key->numFaces; j++) {
 660          if(tex->defined[j + face_pick][i + start_mip]) {
 661             unsigned depth = (zslice_pick < 0 ?
 662                               u_minify(tex->base.depth0, i + start_mip) :
 663                               1);
 664
 665             svga_texture_copy_handle(svga_context(pipe),
 666                                      ss,
 667                                      tex->handle,
 668                                      0, 0, z_offset,
 669                                      i + start_mip,
 670                                      j + face_pick,
 671                                      handle, 0, 0, 0, i, j,
 672                                      u_minify(tex->base.width0, i + start_mip),
 673                                      u_minify(tex->base.height0, i + start_mip),
 674                                      depth);
 675          }
 676       }
 677    }
 678
 679    return handle;
 680 }
 681
 682
 683 static struct pipe_surface *
 684 svga_get_tex_surface(struct pipe_screen *screen,
 685                      struct pipe_texture *pt,
 686                      unsigned face, unsigned level, unsigned zslice,
 687                      unsigned flags)
 688 {
 689    struct svga_texture *tex = svga_texture(pt);
 690    struct svga_surface *s;
 691    boolean render = flags & PIPE_BUFFER_USAGE_GPU_WRITE ? TRUE : FALSE;
 692    boolean view = FALSE;
 693    SVGA3dSurfaceFormat format;
 694
 695    s = CALLOC_STRUCT(svga_surface);
 696    if (!s)
 697       return NULL;
 698
 699    pipe_reference_init(&s->base.reference, 1);
 700    pipe_texture_reference(&s->base.texture, pt);
 701    s->base.format = pt->format;
 702    s->base.width = u_minify(pt->width0, level);
 703    s->base.height = u_minify(pt->height0, level);
 704    s->base.usage = flags;
 705    s->base.level = level;
 706    s->base.face = face;
 707    s->base.zslice = zslice;
 708
 709    if (!render)
 710       format = svga_translate_format(pt->format);
 711    else
 712       format = svga_translate_format_render(pt->format);
 713
 714    assert(format != SVGA3D_FORMAT_INVALID);
 715    assert(!(flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE));
 716
 717
 718    if (svga_screen(screen)->debug.force_surface_view)
 719       view = TRUE;
 720
 721    /* Currently only used for compressed textures */
 722    if (render &&
 723        format != svga_translate_format(pt->format)) {
 724       view = TRUE;
 725    }
 726
 727    if (level != 0 &&
 728        svga_screen(screen)->debug.force_level_surface_view)
 729       view = TRUE;
 730
 731    if (pt->target == PIPE_TEXTURE_3D)
 732       view = TRUE;
 733
 734    if (svga_screen(screen)->debug.no_surface_view)
 735       view = FALSE;
 736
 737    if (view) {
 738       SVGA_DBG(DEBUG_VIEWS, "svga: Surface view: yes %p, level %u face %u z %u, %p\n",
 739                pt, level, face, zslice, s);
 740
 741       s->handle = svga_texture_view_surface(NULL, tex, format, level, 1, face, zslice,
 742                                             &s->key);
 743       s->real_face = 0;
 744       s->real_level = 0;
 745       s->real_zslice = 0;
 746    } else {
 747       SVGA_DBG(DEBUG_VIEWS, "svga: Surface view: no %p, level %u, face %u, z %u, %p\n",
 748                pt, level, face, zslice, s);
 749
 750       memset(&s->key, 0, sizeof s->key);
 751       s->handle = tex->handle;
 752       s->real_face = face;
 753       s->real_level = level;
 754       s->real_zslice = zslice;
 755    }
 756
 757    return &s->base;
 758 }
 759
 760
 761 static void
 762 svga_tex_surface_destroy(struct pipe_surface *surf)
 763 {
 764    struct svga_surface *s = svga_surface(surf);
 765    struct svga_texture *t = svga_texture(surf->texture);
 766    struct svga_screen *ss = svga_screen(surf->texture->screen);
 767
 768    if(s->handle != t->handle) {
 769       SVGA_DBG(DEBUG_DMA, "unref sid %p (tex surface)\n", s->handle);
 770       svga_screen_surface_destroy(ss, &s->key, &s->handle);
 771    }
 772
 773    pipe_texture_reference(&surf->texture, NULL);
 774    FREE(surf);
 775 }
 776
 777
 778 static INLINE void
 779 svga_mark_surface_dirty(struct pipe_surface *surf)
 780 {
 781    struct svga_surface *s = svga_surface(surf);
 782
 783    if(!s->dirty) {
 784       struct svga_texture *tex = svga_texture(surf->texture);
 785
 786       s->dirty = TRUE;
 787
 788       if (s->handle == tex->handle)
 789          tex->defined[surf->face][surf->level] = TRUE;
 790       else {
 791          /* this will happen later in svga_propagate_surface */
 792       }
 793    }
 794 }
 795
 796
 797 void svga_mark_surfaces_dirty(struct svga_context *svga)
 798 {
 799    unsigned i;
 800
 801    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 802       if (svga->curr.framebuffer.cbufs[i])
 803          svga_mark_surface_dirty(svga->curr.framebuffer.cbufs[i]);
 804    }
 805    if (svga->curr.framebuffer.zsbuf)
 806       svga_mark_surface_dirty(svga->curr.framebuffer.zsbuf);
 807 }
 808
 809 /**
 810  * Progagate any changes from surfaces to texture.
 811  * pipe is optional context to inline the blit command in.
 812  */
 813 void
 814 svga_propagate_surface(struct pipe_context *pipe, struct pipe_surface *surf)
 815 {
 816    struct svga_surface *s = svga_surface(surf);
 817    struct svga_texture *tex = svga_texture(surf->texture);
 818    struct svga_screen *ss = svga_screen(surf->texture->screen);
 819
 820    if (!s->dirty)
 821       return;
 822
 823    s->dirty = FALSE;
 824    ss->texture_timestamp++;
 825    tex->view_age[surf->level] = ++(tex->age);
 826
 827    if (s->handle != tex->handle) {
 828       SVGA_DBG(DEBUG_VIEWS, "svga: Surface propagate: tex %p, level %u, from %p\n", tex, surf->level, surf);
 829       svga_texture_copy_handle(svga_context(pipe), ss,
 830                                s->handle, 0, 0, 0, s->real_level, s->real_face,
 831                                tex->handle, 0, 0, surf->zslice, surf->level, surf->face,
 832                                u_minify(tex->base.width0, surf->level),
 833                                u_minify(tex->base.height0, surf->level), 1);
 834       tex->defined[surf->face][surf->level] = TRUE;
 835    }
 836 }
 837
 838 /**
 839  * Check if we should call svga_propagate_surface on the surface.
 840  */
 841 extern boolean
 842 svga_surface_needs_propagation(struct pipe_surface *surf)
 843 {
 844    struct svga_surface *s = svga_surface(surf);
 845    struct svga_texture *tex = svga_texture(surf->texture);
 846
 847    return s->dirty && s->handle != tex->handle;
 848 }
 849
 850
 851 static struct pipe_transfer *
 852 svga_get_tex_transfer(struct pipe_screen *screen,
 853                      struct pipe_texture *texture,
 854                      unsigned face, unsigned level, unsigned zslice,
 855                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
 856                      unsigned w, unsigned h)
 857 {
 858    struct svga_screen *ss = svga_screen(screen);
 859    struct svga_winsys_screen *sws = ss->sws;
 860    struct svga_transfer *st;
 861    unsigned nblocksx = util_format_get_nblocksx(texture->format, w);
 862    unsigned nblocksy = util_format_get_nblocksy(texture->format, h);
 863
 864    /* We can't map texture storage directly */
 865    if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 866       return NULL;
 867
 868    st = CALLOC_STRUCT(svga_transfer);
 869    if (!st)
 870       return NULL;
 871
 872    st->base.x = x;
 873    st->base.y = y;
 874    st->base.width = w;
 875    st->base.height = h;
 876    st->base.stride = nblocksx*util_format_get_blocksize(texture->format);
 877    st->base.usage = usage;
 878    st->base.face = face;
 879    st->base.level = level;
 880    st->base.zslice = zslice;
 881
 882    st->hw_nblocksy = nblocksy;
 883
 884    st->hwbuf = svga_winsys_buffer_create(ss,
 885                                          1,
 886                                          0,
 887                                          st->hw_nblocksy*st->base.stride);
 888    while(!st->hwbuf && (st->hw_nblocksy /= 2)) {
 889       st->hwbuf = svga_winsys_buffer_create(ss,
 890                                             1,
 891                                             0,
 892                                             st->hw_nblocksy*st->base.stride);
 893    }
 894
 895    if(!st->hwbuf)
 896       goto no_hwbuf;
 897
 898    if(st->hw_nblocksy < nblocksy) {
 899       /* We couldn't allocate a hardware buffer big enough for the transfer,
 900        * so allocate regular malloc memory instead */
 901       debug_printf("%s: failed to allocate %u KB of DMA, splitting into %u x %u KB DMA transfers\n",
 902                    __FUNCTION__,
 903                    (nblocksy*st->base.stride + 1023)/1024,
 904                    (nblocksy + st->hw_nblocksy - 1)/st->hw_nblocksy,
 905                    (st->hw_nblocksy*st->base.stride + 1023)/1024);
 906       st->swbuf = MALLOC(nblocksy*st->base.stride);
 907       if(!st->swbuf)
 908          goto no_swbuf;
 909    }
 910
 911    pipe_texture_reference(&st->base.texture, texture);
 912
 913    if (usage & PIPE_TRANSFER_READ)
 914       svga_transfer_dma(st, SVGA3D_READ_HOST_VRAM);
 915
 916    return &st->base;
 917
 918 no_swbuf:
 919    sws->buffer_destroy(sws, st->hwbuf);
 920 no_hwbuf:
 921    FREE(st);
 922    return NULL;
 923 }
 924
 925
 926 static void *
 927 svga_transfer_map( struct pipe_screen *screen,
 928                    struct pipe_transfer *transfer )
 929 {
 930    struct svga_screen *ss = svga_screen(screen);
 931    struct svga_winsys_screen *sws = ss->sws;
 932    struct svga_transfer *st = svga_transfer(transfer);
 933
 934    if(st->swbuf)
 935       return st->swbuf;
 936    else
 937       /* The wait for read transfers already happened when svga_transfer_dma
 938        * was called. */
 939       return sws->buffer_map(sws, st->hwbuf,
 940                              pipe_transfer_buffer_flags(transfer));
 941 }
 942
 943
 944 static void
 945 svga_transfer_unmap(struct pipe_screen *screen,
 946                     struct pipe_transfer *transfer)
 947 {
 948    struct svga_screen *ss = svga_screen(screen);
 949    struct svga_winsys_screen *sws = ss->sws;
 950    struct svga_transfer *st = svga_transfer(transfer);
 951
 952    if(!st->swbuf)
 953       sws->buffer_unmap(sws, st->hwbuf);
 954 }
 955
 956
 957 static void
 958 svga_tex_transfer_destroy(struct pipe_transfer *transfer)
 959 {
 960    struct svga_texture *tex = svga_texture(transfer->texture);
 961    struct svga_screen *ss = svga_screen(transfer->texture->screen);
 962    struct svga_winsys_screen *sws = ss->sws;
 963    struct svga_transfer *st = svga_transfer(transfer);
 964
 965    if (st->base.usage & PIPE_TRANSFER_WRITE) {
 966       svga_transfer_dma(st, SVGA3D_WRITE_HOST_VRAM);
 967       ss->texture_timestamp++;
 968       tex->view_age[transfer->level] = ++(tex->age);
 969       tex->defined[transfer->face][transfer->level] = TRUE;
 970    }
 971
 972    pipe_texture_reference(&st->base.texture, NULL);
 973    FREE(st->swbuf);
 974    sws->buffer_destroy(sws, st->hwbuf);
 975    FREE(st);
 976 }
 977
 978 void
 979 svga_screen_init_texture_functions(struct pipe_screen *screen)
 980 {
 981    screen->texture_create = svga_texture_create;
 982    screen->texture_from_handle = svga_screen_texture_from_handle;
 983    screen->texture_get_handle = svga_screen_texture_get_handle;
 984    screen->texture_destroy = svga_texture_destroy;
 985    screen->get_tex_surface = svga_get_tex_surface;
 986    screen->tex_surface_destroy = svga_tex_surface_destroy;
 987    screen->texture_blanket = svga_texture_blanket;
 988    screen->get_tex_transfer = svga_get_tex_transfer;
 989    screen->transfer_map = svga_transfer_map;
 990    screen->transfer_unmap = svga_transfer_unmap;
 991    screen->tex_transfer_destroy = svga_tex_transfer_destroy;
 992 }
 993
 994 /***********************************************************************
 995  */
 996
 997 struct svga_sampler_view *
 998 svga_get_tex_sampler_view(struct pipe_context *pipe, struct pipe_texture *pt,
 999                           unsigned min_lod, unsigned max_lod)
1000 {
1001    struct svga_screen *ss = svga_screen(pt->screen);
1002    struct svga_texture *tex = svga_texture(pt);
1003    struct svga_sampler_view *sv = NULL;
1004    SVGA3dSurfaceFormat format = svga_translate_format(pt->format);
1005    boolean view = TRUE;
1006
1007    assert(pt);
1008    assert(min_lod >= 0);
1009    assert(min_lod <= max_lod);
1010    assert(max_lod <= pt->last_level);
1011
1012
1013    /* Is a view needed */
1014    {
1015       /*
1016        * Can't control max lod. For first level views and when we only
1017        * look at one level we disable mip filtering to achive the same
1018        * results as a view.
1019        */
1020       if (min_lod == 0 && max_lod >= pt->last_level)
1021          view = FALSE;
1022
1023       if (util_format_is_compressed(pt->format) && view) {
1024          format = svga_translate_format_render(pt->format);
1025       }
1026
1027       if (ss->debug.no_sampler_view)
1028          view = FALSE;
1029
1030       if (ss->debug.force_sampler_view)
1031          view = TRUE;
1032    }
1033
1034    /* First try the cache */
1035    if (view) {
1036       pipe_mutex_lock(ss->tex_mutex);
1037       if (tex->cached_view &&
1038           tex->cached_view->min_lod == min_lod &&
1039           tex->cached_view->max_lod == max_lod) {
1040          svga_sampler_view_reference(&sv, tex->cached_view);
1041          pipe_mutex_unlock(ss->tex_mutex);
1042          SVGA_DBG(DEBUG_VIEWS, "svga: Sampler view: reuse %p, %u %u, last %u\n",
1043                               pt, min_lod, max_lod, pt->last_level);
1044          svga_validate_sampler_view(svga_context(pipe), sv);
1045          return sv;
1046       }
1047       pipe_mutex_unlock(ss->tex_mutex);
1048    }
1049
1050    sv = CALLOC_STRUCT(svga_sampler_view);
1051    pipe_reference_init(&sv->reference, 1);
1052    pipe_texture_reference(&sv->texture, pt);
1053    sv->min_lod = min_lod;
1054    sv->max_lod = max_lod;
1055
1056    /* No view needed just use the whole texture */
1057    if (!view) {
1058       SVGA_DBG(DEBUG_VIEWS,
1059                "svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
1060                pt, min_lod, max_lod,
1061                max_lod - min_lod + 1,
1062                pt->width0,
1063                pt->height0,
1064                pt->depth0,
1065                pt->last_level);
1066       sv->key.cachable = 0;
1067       sv->handle = tex->handle;
1068       return sv;
1069    }
1070
1071    SVGA_DBG(DEBUG_VIEWS,
1072             "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
1073             pt, min_lod, max_lod,
1074             max_lod - min_lod + 1,
1075             pt->width0,
1076             pt->height0,
1077             pt->depth0,
1078             pt->last_level);
1079
1080    sv->age = tex->age;
1081    sv->handle = svga_texture_view_surface(pipe, tex, format,
1082                                           min_lod,
1083                                           max_lod - min_lod + 1,
1084                                           -1, -1,
1085                                           &sv->key);
1086
1087    if (!sv->handle) {
1088       assert(0);
1089       sv->key.cachable = 0;
1090       sv->handle = tex->handle;
1091       return sv;
1092    }
1093
1094    pipe_mutex_lock(ss->tex_mutex);
1095    svga_sampler_view_reference(&tex->cached_view, sv);
1096    pipe_mutex_unlock(ss->tex_mutex);
1097
1098    return sv;
1099 }
1100
1101 void
1102 svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *v)
1103 {
1104    struct svga_texture *tex = svga_texture(v->texture);
1105    unsigned numFaces;
1106    unsigned age = 0;
1107    int i, k;
1108
1109    assert(svga);
1110
1111    if (v->handle == tex->handle)
1112       return;
1113
1114    age = tex->age;
1115
1116    if(tex->base.target == PIPE_TEXTURE_CUBE)
1117       numFaces = 6;
1118    else
1119       numFaces = 1;
1120
1121    for (i = v->min_lod; i <= v->max_lod; i++) {
1122       for (k = 0; k < numFaces; k++) {
1123          if (v->age < tex->view_age[i])
1124             svga_texture_copy_handle(svga, NULL,
1125                                      tex->handle, 0, 0, 0, i, k,
1126                                      v->handle, 0, 0, 0, i - v->min_lod, k,
1127                                      u_minify(tex->base.width0, i),
1128                                      u_minify(tex->base.height0, i),
1129                                      u_minify(tex->base.depth0, i));
1130       }
1131    }
1132
1133    v->age = age;
1134 }
1135
1136 void
1137 svga_destroy_sampler_view_priv(struct svga_sampler_view *v)
1138 {
1139    struct svga_texture *tex = svga_texture(v->texture);
1140
1141    if(v->handle != tex->handle) {
1142       struct svga_screen *ss = svga_screen(v->texture->screen);
1143       SVGA_DBG(DEBUG_DMA, "unref sid %p (sampler view)\n", v->handle);
1144       svga_screen_surface_destroy(ss, &v->key, &v->handle);
1145    }
1146    pipe_texture_reference(&v->texture, NULL);
1147    FREE(v);
1148 }