src/gallium/drivers/svga/svga_screen.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 "util/u_format.h"
  27 #include "util/u_memory.h"
  28 #include "util/u_inlines.h"
  29 #include "util/u_string.h"
  30 #include "util/u_math.h"
  31
  32 #include "svga_winsys.h"
  33 #include "svga_public.h"
  34 #include "svga_context.h"
  35 #include "svga_format.h"
  36 #include "svga_screen.h"
  37 #include "svga_resource_texture.h"
  38 #include "svga_resource.h"
  39 #include "svga_debug.h"
  40
  41 #include "svga3d_shaderdefs.h"
  42
  43
  44 #ifdef DEBUG
  45 int SVGA_DEBUG = 0;
  46
  47 static const struct debug_named_value svga_debug_flags[] = {
  48    { "dma",      DEBUG_DMA, NULL },
  49    { "tgsi",     DEBUG_TGSI, NULL },
  50    { "pipe",     DEBUG_PIPE, NULL },
  51    { "state",    DEBUG_STATE, NULL },
  52    { "screen",   DEBUG_SCREEN, NULL },
  53    { "tex",      DEBUG_TEX, NULL },
  54    { "swtnl",    DEBUG_SWTNL, NULL },
  55    { "const",    DEBUG_CONSTS, NULL },
  56    { "viewport", DEBUG_VIEWPORT, NULL },
  57    { "views",    DEBUG_VIEWS, NULL },
  58    { "perf",     DEBUG_PERF, NULL },
  59    { "flush",    DEBUG_FLUSH, NULL },
  60    { "sync",     DEBUG_SYNC, NULL },
  61    { "cache",    DEBUG_CACHE, NULL },
  62    DEBUG_NAMED_VALUE_END
  63 };
  64 #endif
  65
  66 static const char *
  67 svga_get_vendor( struct pipe_screen *pscreen )
  68 {
  69    return "VMware, Inc.";
  70 }
  71
  72
  73 static const char *
  74 svga_get_name( struct pipe_screen *pscreen )
  75 {
  76    const char *build = "", *llvm = "", *mutex = "";
  77    static char name[100];
  78 #ifdef DEBUG
  79    /* Only return internal details in the DEBUG version:
  80     */
  81    build = "build: DEBUG;";
  82    mutex = "mutex: " PIPE_ATOMIC ";";
  83 #ifdef HAVE_LLVM
  84    llvm = "LLVM;";
  85 #endif
  86 #else
  87    build = "build: RELEASE;";
  88 #endif
  89
  90    util_snprintf(name, sizeof(name), "SVGA3D; %s %s %s", build, mutex, llvm);
  91    return name;
  92 }
  93
  94
  95
  96
  97 static float
  98 svga_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
  99 {
 100    struct svga_screen *svgascreen = svga_screen(screen);
 101    struct svga_winsys_screen *sws = svgascreen->sws;
 102    SVGA3dDevCapResult result;
 103
 104    switch (param) {
 105    case PIPE_CAPF_MAX_LINE_WIDTH:
 106       return svgascreen->maxLineWidth;
 107    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 108       return svgascreen->maxLineWidthAA;
 109
 110    case PIPE_CAPF_MAX_POINT_WIDTH:
 111       /* fall-through */
 112    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 113       return svgascreen->maxPointSize;
 114
 115    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 116       if(!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY, &result))
 117          return 4.0f;
 118       return (float) result.u;
 119
 120    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 121       return 15.0;
 122    case PIPE_CAPF_GUARD_BAND_LEFT:
 123    case PIPE_CAPF_GUARD_BAND_TOP:
 124    case PIPE_CAPF_GUARD_BAND_RIGHT:
 125    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 126       return 0.0;
 127    }
 128
 129    debug_printf("Unexpected PIPE_CAPF_ query %u\n", param);
 130    return 0;
 131 }
 132
 133
 134 static int
 135 svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
 136 {
 137    struct svga_screen *svgascreen = svga_screen(screen);
 138    struct svga_winsys_screen *sws = svgascreen->sws;
 139    SVGA3dDevCapResult result;
 140
 141    switch (param) {
 142    case PIPE_CAP_NPOT_TEXTURES:
 143    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 144       return 1;
 145    case PIPE_CAP_TWO_SIDED_STENCIL:
 146       return 1;
 147    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 148       return 0;
 149    case PIPE_CAP_ANISOTROPIC_FILTER:
 150       return 1;
 151    case PIPE_CAP_POINT_SPRITE:
 152       return 1;
 153    case PIPE_CAP_TGSI_TEXCOORD:
 154       return 0;
 155    case PIPE_CAP_MAX_RENDER_TARGETS:
 156       return svgascreen->max_color_buffers;
 157    case PIPE_CAP_OCCLUSION_QUERY:
 158       return 1;
 159    case PIPE_CAP_QUERY_TIME_ELAPSED:
 160       return 0;
 161    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 162       return 1;
 163    case PIPE_CAP_TEXTURE_SWIZZLE:
 164       return 1;
 165    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 166       return 0;
 167    case PIPE_CAP_USER_VERTEX_BUFFERS:
 168    case PIPE_CAP_USER_INDEX_BUFFERS:
 169       return 0;
 170    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 171       return 1;
 172    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 173       return 16;
 174
 175    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 176       {
 177          unsigned levels = SVGA_MAX_TEXTURE_LEVELS;
 178          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH, &result))
 179             levels = MIN2(util_logbase2(result.u) + 1, levels);
 180          else
 181             levels = 12 /* 2048x2048 */;
 182          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT, &result))
 183             levels = MIN2(util_logbase2(result.u) + 1, levels);
 184          else
 185             levels = 12 /* 2048x2048 */;
 186          return levels;
 187       }
 188
 189    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 190       if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VOLUME_EXTENT, &result))
 191          return 8;  /* max 128x128x128 */
 192       return MIN2(util_logbase2(result.u) + 1, SVGA_MAX_TEXTURE_LEVELS);
 193
 194    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 195       /*
 196        * No mechanism to query the host, and at least limited to 2048x2048 on
 197        * certain hardware.
 198        */
 199       return MIN2(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
 200                   12 /* 2048x2048 */);
 201
 202    case PIPE_CAP_BLEND_EQUATION_SEPARATE: /* req. for GL 1.5 */
 203       return 1;
 204
 205    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 206       return 1;
 207    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 208       return 0;
 209    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 210       return 0;
 211    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 212       return 1;
 213
 214    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 215       return 1; /* The color outputs of vertex shaders are not clamped */
 216    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 217       return 0; /* The driver can't clamp vertex colors */
 218    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 219       return 0; /* The driver can't clamp fragment colors */
 220
 221    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 222       return 1; /* expected for GL_ARB_framebuffer_object */
 223
 224    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 225       return 120;
 226
 227    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 228       return 0;
 229
 230    case PIPE_CAP_SM3:
 231       return 1;
 232
 233    /* Unsupported features */
 234    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 235    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 236    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 237    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 238    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 239    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 240    case PIPE_CAP_INDEP_BLEND_ENABLE:
 241    case PIPE_CAP_INDEP_BLEND_FUNC:
 242    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 243    case PIPE_CAP_PRIMITIVE_RESTART:
 244    case PIPE_CAP_TGSI_INSTANCEID:
 245    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 246    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 247    case PIPE_CAP_MIN_TEXEL_OFFSET:
 248    case PIPE_CAP_MAX_TEXEL_OFFSET:
 249    case PIPE_CAP_CONDITIONAL_RENDER:
 250    case PIPE_CAP_TEXTURE_BARRIER:
 251    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 252    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 253    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 254    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 255    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 256    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 257    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 258    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 259    case PIPE_CAP_COMPUTE:
 260    case PIPE_CAP_START_INSTANCE:
 261    case PIPE_CAP_QUERY_TIMESTAMP:
 262    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 263    case PIPE_CAP_CUBE_MAP_ARRAY:
 264    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 265    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 266    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 267    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 268    case PIPE_CAP_TGSI_VS_LAYER:
 269       return 0;
 270    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 271       return 64;
 272    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 273       return 1;
 274    case PIPE_CAP_MAX_VIEWPORTS:
 275       return 1;
 276    case PIPE_CAP_ENDIANNESS:
 277       return PIPE_ENDIAN_LITTLE;
 278    }
 279
 280    debug_printf("Unexpected PIPE_CAP_ query %u\n", param);
 281    return 0;
 282 }
 283
 284 static int svga_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 285 {
 286    struct svga_screen *svgascreen = svga_screen(screen);
 287    struct svga_winsys_screen *sws = svgascreen->sws;
 288    SVGA3dDevCapResult result;
 289
 290    switch (shader)
 291    {
 292    case PIPE_SHADER_FRAGMENT:
 293       switch (param)
 294       {
 295       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 296       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 297       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 298       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 299          return 512;
 300       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 301          return SVGA3D_MAX_NESTING_LEVEL;
 302       case PIPE_SHADER_CAP_MAX_INPUTS:
 303          return 10;
 304       case PIPE_SHADER_CAP_MAX_CONSTS:
 305          return 224;
 306       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 307          return 1;
 308       case PIPE_SHADER_CAP_MAX_TEMPS:
 309          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS, &result))
 310             return 32;
 311          return MIN2(result.u, SVGA3D_TEMPREG_MAX);
 312       case PIPE_SHADER_CAP_MAX_ADDRS:
 313       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 314          /*
 315           * Although PS 3.0 has some addressing abilities it can only represent
 316           * loops that can be statically determined and unrolled. Given we can
 317           * only handle a subset of the cases that the state tracker already
 318           * does it is better to defer loop unrolling to the state tracker.
 319           */
 320          return 0;
 321       case PIPE_SHADER_CAP_MAX_PREDS:
 322          return 1;
 323       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 324          return 0;
 325       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 326          return 0;
 327       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 328       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 329       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 330          return 0;
 331       case PIPE_SHADER_CAP_SUBROUTINES:
 332          return 0;
 333       case PIPE_SHADER_CAP_INTEGERS:
 334          return 0;
 335       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 336       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 337          return 16;
 338       default:
 339          debug_printf("Unexpected fragment shader query %u\n", param);
 340          return 0;
 341       }
 342       break;
 343    case PIPE_SHADER_VERTEX:
 344       switch (param)
 345       {
 346       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 347       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 348          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS, &result))
 349             return 512;
 350          return result.u;
 351       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 352       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 353          /* XXX: until we have vertex texture support */
 354          return 0;
 355       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 356          return SVGA3D_MAX_NESTING_LEVEL;
 357       case PIPE_SHADER_CAP_MAX_INPUTS:
 358          return 16;
 359       case PIPE_SHADER_CAP_MAX_CONSTS:
 360          return 256;
 361       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 362          return 1;
 363       case PIPE_SHADER_CAP_MAX_TEMPS:
 364          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS, &result))
 365             return 32;
 366          return MIN2(result.u, SVGA3D_TEMPREG_MAX);
 367       case PIPE_SHADER_CAP_MAX_ADDRS:
 368          return 1;
 369       case PIPE_SHADER_CAP_MAX_PREDS:
 370          return 1;
 371       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 372          return 0;
 373       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 374          return 0;
 375       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 376       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 377          return 1;
 378       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 379          return 0;
 380       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 381          return 1;
 382       case PIPE_SHADER_CAP_SUBROUTINES:
 383          return 0;
 384       case PIPE_SHADER_CAP_INTEGERS:
 385          return 0;
 386       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 387       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 388          return 0;
 389       default:
 390          debug_printf("Unexpected vertex shader query %u\n", param);
 391          return 0;
 392       }
 393       break;
 394    case PIPE_SHADER_GEOMETRY:
 395    case PIPE_SHADER_COMPUTE:
 396       /* no support for geometry or compute shaders at this time */
 397       return 0;
 398    default:
 399       debug_printf("Unexpected shader type (%u) query\n", shader);
 400       return 0;
 401    }
 402    return 0;
 403 }
 404
 405
 406 /**
 407  * Implemnt pipe_screen::is_format_supported().
 408  * \param bindings  bitmask of PIPE_BIND_x flags
 409  */
 410 static boolean
 411 svga_is_format_supported( struct pipe_screen *screen,
 412                           enum pipe_format format,
 413                           enum pipe_texture_target target,
 414                           unsigned sample_count,
 415                           unsigned bindings)
 416 {
 417    struct svga_screen *ss = svga_screen(screen);
 418    SVGA3dSurfaceFormat svga_format;
 419    SVGA3dSurfaceFormatCaps caps;
 420    SVGA3dSurfaceFormatCaps mask;
 421
 422    assert(bindings);
 423
 424    if (sample_count > 1) {
 425       return FALSE;
 426    }
 427
 428    svga_format = svga_translate_format(ss, format, bindings);
 429    if (svga_format == SVGA3D_FORMAT_INVALID) {
 430       return FALSE;
 431    }
 432
 433    /*
 434     * Override host capabilities, so that we end up with the same
 435     * visuals for all virtual hardware implementations.
 436     */
 437
 438    if (bindings & PIPE_BIND_DISPLAY_TARGET) {
 439       switch (svga_format) {
 440       case SVGA3D_A8R8G8B8:
 441       case SVGA3D_X8R8G8B8:
 442       case SVGA3D_R5G6B5:
 443          break;
 444
 445       /* Often unsupported/problematic. This means we end up with the same
 446        * visuals for all virtual hardware implementations.
 447        */
 448       case SVGA3D_A4R4G4B4:
 449       case SVGA3D_A1R5G5B5:
 450          return FALSE;
 451
 452       default:
 453          return FALSE;
 454       }
 455    }
 456
 457    /*
 458     * Query the host capabilities.
 459     */
 460
 461    svga_get_format_cap(ss, svga_format, &caps);
 462
 463    mask.value = 0;
 464    if (bindings & PIPE_BIND_RENDER_TARGET) {
 465       mask.offscreenRenderTarget = 1;
 466    }
 467    if (bindings & PIPE_BIND_DEPTH_STENCIL) {
 468       mask.zStencil = 1;
 469    }
 470    if (bindings & PIPE_BIND_SAMPLER_VIEW) {
 471       mask.texture = 1;
 472    }
 473
 474    if (target == PIPE_TEXTURE_CUBE) {
 475       mask.cubeTexture = 1;
 476    }
 477    if (target == PIPE_TEXTURE_3D) {
 478       mask.volumeTexture = 1;
 479    }
 480
 481    return (caps.value & mask.value) == mask.value;
 482 }
 483
 484
 485 static void
 486 svga_fence_reference(struct pipe_screen *screen,
 487                      struct pipe_fence_handle **ptr,
 488                      struct pipe_fence_handle *fence)
 489 {
 490    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
 491    sws->fence_reference(sws, ptr, fence);
 492 }
 493
 494
 495 static boolean
 496 svga_fence_signalled(struct pipe_screen *screen,
 497                      struct pipe_fence_handle *fence)
 498 {
 499    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
 500    return sws->fence_signalled(sws, fence, 0) == 0;
 501 }
 502
 503
 504 static boolean
 505 svga_fence_finish(struct pipe_screen *screen,
 506                   struct pipe_fence_handle *fence,
 507                   uint64_t timeout)
 508 {
 509    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
 510
 511    SVGA_DBG(DEBUG_DMA|DEBUG_PERF, "%s fence_ptr %p\n",
 512             __FUNCTION__, fence);
 513
 514    return sws->fence_finish(sws, fence, 0) == 0;
 515 }
 516
 517
 518 static int
 519 svga_get_driver_query_info(struct pipe_screen *screen,
 520                            unsigned index,
 521                            struct pipe_driver_query_info *info)
 522 {
 523    static const struct pipe_driver_query_info queries[] = {
 524       {"draw-calls", SVGA_QUERY_DRAW_CALLS, 0, FALSE},
 525       {"fallbacks", SVGA_QUERY_FALLBACKS, 0, FALSE},
 526       {"memory-used", SVGA_QUERY_MEMORY_USED, 0, TRUE}
 527    };
 528
 529    if (!info)
 530       return Elements(queries);
 531
 532    if (index >= Elements(queries))
 533       return 0;
 534
 535    *info = queries[index];
 536    return 1;
 537 }
 538
 539
 540 static void
 541 svga_destroy_screen( struct pipe_screen *screen )
 542 {
 543    struct svga_screen *svgascreen = svga_screen(screen);
 544
 545    svga_screen_cache_cleanup(svgascreen);
 546
 547    pipe_mutex_destroy(svgascreen->swc_mutex);
 548    pipe_mutex_destroy(svgascreen->tex_mutex);
 549
 550    svgascreen->sws->destroy(svgascreen->sws);
 551
 552    FREE(svgascreen);
 553 }
 554
 555
 556 /**
 557  * Create a new svga_screen object
 558  */
 559 struct pipe_screen *
 560 svga_screen_create(struct svga_winsys_screen *sws)
 561 {
 562    struct svga_screen *svgascreen;
 563    struct pipe_screen *screen;
 564    SVGA3dDevCapResult result;
 565    boolean use_vs30, use_ps30;
 566
 567 #ifdef DEBUG
 568    SVGA_DEBUG = debug_get_flags_option("SVGA_DEBUG", svga_debug_flags, 0 );
 569 #endif
 570
 571    svgascreen = CALLOC_STRUCT(svga_screen);
 572    if (!svgascreen)
 573       goto error1;
 574
 575    svgascreen->debug.force_level_surface_view =
 576       debug_get_bool_option("SVGA_FORCE_LEVEL_SURFACE_VIEW", FALSE);
 577    svgascreen->debug.force_surface_view =
 578       debug_get_bool_option("SVGA_FORCE_SURFACE_VIEW", FALSE);
 579    svgascreen->debug.force_sampler_view =
 580       debug_get_bool_option("SVGA_FORCE_SAMPLER_VIEW", FALSE);
 581    svgascreen->debug.no_surface_view =
 582       debug_get_bool_option("SVGA_NO_SURFACE_VIEW", FALSE);
 583    svgascreen->debug.no_sampler_view =
 584       debug_get_bool_option("SVGA_NO_SAMPLER_VIEW", FALSE);
 585
 586    screen = &svgascreen->screen;
 587
 588    screen->destroy = svga_destroy_screen;
 589    screen->get_name = svga_get_name;
 590    screen->get_vendor = svga_get_vendor;
 591    screen->get_param = svga_get_param;
 592    screen->get_shader_param = svga_get_shader_param;
 593    screen->get_paramf = svga_get_paramf;
 594    screen->is_format_supported = svga_is_format_supported;
 595    screen->context_create = svga_context_create;
 596    screen->fence_reference = svga_fence_reference;
 597    screen->fence_signalled = svga_fence_signalled;
 598    screen->fence_finish = svga_fence_finish;
 599    screen->get_driver_query_info = svga_get_driver_query_info;
 600    svgascreen->sws = sws;
 601
 602    svga_init_screen_resource_functions(svgascreen);
 603
 604    if (sws->get_hw_version) {
 605       svgascreen->hw_version = sws->get_hw_version(sws);
 606    } else {
 607       svgascreen->hw_version = SVGA3D_HWVERSION_WS65_B1;
 608    }
 609
 610    use_ps30 =
 611       sws->get_cap(sws, SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION, &result) &&
 612       result.u >= SVGA3DPSVERSION_30 ? TRUE : FALSE;
 613
 614    use_vs30 =
 615       sws->get_cap(sws, SVGA3D_DEVCAP_VERTEX_SHADER_VERSION, &result) &&
 616       result.u >= SVGA3DVSVERSION_30 ? TRUE : FALSE;
 617
 618    /* we require Shader model 3.0 or later */
 619    if (!use_ps30 || !use_vs30)
 620       goto error2;
 621
 622    /*
 623     * The D16, D24X8, and D24S8 formats always do an implicit shadow compare
 624     * when sampled from, where as the DF16, DF24, and D24S8_INT do not.  So
 625     * we prefer the later when available.
 626     *
 627     * This mimics hardware vendors extensions for D3D depth sampling. See also
 628     * http://aras-p.info/texts/D3D9GPUHacks.html
 629     */
 630
 631    {
 632       boolean has_df16, has_df24, has_d24s8_int;
 633       SVGA3dSurfaceFormatCaps caps;
 634       SVGA3dSurfaceFormatCaps mask;
 635       mask.value = 0;
 636       mask.zStencil = 1;
 637       mask.texture = 1;
 638
 639       svgascreen->depth.z16 = SVGA3D_Z_D16;
 640       svgascreen->depth.x8z24 = SVGA3D_Z_D24X8;
 641       svgascreen->depth.s8z24 = SVGA3D_Z_D24S8;
 642
 643       svga_get_format_cap(svgascreen, SVGA3D_Z_DF16, &caps);
 644       has_df16 = (caps.value & mask.value) == mask.value;
 645
 646       svga_get_format_cap(svgascreen, SVGA3D_Z_DF24, &caps);
 647       has_df24 = (caps.value & mask.value) == mask.value;
 648
 649       svga_get_format_cap(svgascreen, SVGA3D_Z_D24S8_INT, &caps);
 650       has_d24s8_int = (caps.value & mask.value) == mask.value;
 651
 652       /* XXX: We might want some other logic here.
 653        * Like if we only have d24s8_int we should
 654        * emulate the other formats with that.
 655        */
 656       if (has_df16) {
 657          svgascreen->depth.z16 = SVGA3D_Z_DF16;
 658       }
 659       if (has_df24) {
 660          svgascreen->depth.x8z24 = SVGA3D_Z_DF24;
 661       }
 662       if (has_d24s8_int) {
 663          svgascreen->depth.s8z24 = SVGA3D_Z_D24S8_INT;
 664       }
 665    }
 666
 667    /* Query device caps
 668     */
 669    if (!sws->get_cap(sws, SVGA3D_DEVCAP_LINE_STIPPLE, &result))
 670       svgascreen->haveLineStipple = FALSE;
 671    else
 672       svgascreen->haveLineStipple = result.u;
 673
 674    if (!sws->get_cap(sws, SVGA3D_DEVCAP_LINE_AA, &result))
 675       svgascreen->haveLineSmooth = FALSE;
 676    else
 677       svgascreen->haveLineSmooth = result.u;
 678
 679    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_LINE_WIDTH, &result))
 680       svgascreen->maxLineWidth = 1.0F;
 681    else
 682       svgascreen->maxLineWidth = result.f;
 683
 684    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH, &result))
 685       svgascreen->maxLineWidthAA = 1.0F;
 686    else
 687       svgascreen->maxLineWidthAA = result.f;
 688
 689    if (0)
 690       debug_printf("svga: haveLineStip %u  "
 691                    "haveLineSmooth %u  maxLineWidth %f\n",
 692                    svgascreen->haveLineStipple, svgascreen->haveLineSmooth,
 693                    svgascreen->maxLineWidth);
 694
 695    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_POINT_SIZE, &result)) {
 696       svgascreen->maxPointSize = 1.0F;
 697    } else {
 698       /* Keep this to a reasonable size to avoid failures in
 699        * conform/pntaa.c:
 700        */
 701       svgascreen->maxPointSize = MIN2(result.f, 80.0f);
 702    }
 703
 704    /* The SVGA3D device always supports 4 targets at this time, regardless
 705     * of what querying SVGA3D_DEVCAP_MAX_RENDER_TARGETS might return.
 706     */
 707    svgascreen->max_color_buffers = 4;
 708
 709    pipe_mutex_init(svgascreen->tex_mutex);
 710    pipe_mutex_init(svgascreen->swc_mutex);
 711
 712    svga_screen_cache_init(svgascreen);
 713
 714    return screen;
 715 error2:
 716    FREE(svgascreen);
 717 error1:
 718    return NULL;
 719 }
 720
 721 struct svga_winsys_screen *
 722 svga_winsys_screen(struct pipe_screen *screen)
 723 {
 724    return svga_screen(screen)->sws;
 725 }
 726
 727 #ifdef DEBUG
 728 struct svga_screen *
 729 svga_screen(struct pipe_screen *screen)
 730 {
 731    assert(screen);
 732    assert(screen->destroy == svga_destroy_screen);
 733    return (struct svga_screen *)screen;
 734 }
 735 #endif