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_memory.h"
  27 #include "util/u_inlines.h"
  28 #include "util/u_string.h"
  29 #include "util/u_math.h"
  30
  31 #include "svga_winsys.h"
  32 #include "svga_public.h"
  33 #include "svga_context.h"
  34 #include "svga_format.h"
  35 #include "svga_screen.h"
  36 #include "svga_resource_texture.h"
  37 #include "svga_resource.h"
  38 #include "svga_debug.h"
  39
  40 #include "svga3d_shaderdefs.h"
  41
  42
  43 #ifdef DEBUG
  44 int SVGA_DEBUG = 0;
  45
  46 static const struct debug_named_value svga_debug_flags[] = {
  47    { "dma",      DEBUG_DMA, NULL },
  48    { "tgsi",     DEBUG_TGSI, NULL },
  49    { "pipe",     DEBUG_PIPE, NULL },
  50    { "state",    DEBUG_STATE, NULL },
  51    { "screen",   DEBUG_SCREEN, NULL },
  52    { "tex",      DEBUG_TEX, NULL },
  53    { "swtnl",    DEBUG_SWTNL, NULL },
  54    { "const",    DEBUG_CONSTS, NULL },
  55    { "viewport", DEBUG_VIEWPORT, NULL },
  56    { "views",    DEBUG_VIEWS, NULL },
  57    { "perf",     DEBUG_PERF, NULL },
  58    { "flush",    DEBUG_FLUSH, NULL },
  59    { "sync",     DEBUG_SYNC, NULL },
  60    { "cache",    DEBUG_CACHE, NULL },
  61    DEBUG_NAMED_VALUE_END
  62 };
  63 #endif
  64
  65 static const char *
  66 svga_get_vendor( struct pipe_screen *pscreen )
  67 {
  68    return "VMware, Inc.";
  69 }
  70
  71
  72 static const char *
  73 svga_get_name( struct pipe_screen *pscreen )
  74 {
  75    const char *build = "", *llvm = "", *mutex = "";
  76    static char name[100];
  77 #ifdef DEBUG
  78    /* Only return internal details in the DEBUG version:
  79     */
  80    build = "build: DEBUG;";
  81    mutex = "mutex: " PIPE_ATOMIC ";";
  82 #ifdef HAVE_LLVM
  83    llvm = "LLVM;";
  84 #endif
  85 #else
  86    build = "build: RELEASE;";
  87 #endif
  88
  89    util_snprintf(name, sizeof(name), "SVGA3D; %s %s %s", build, mutex, llvm);
  90    return name;
  91 }
  92
  93
  94
  95
  96 static float
  97 svga_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
  98 {
  99    struct svga_screen *svgascreen = svga_screen(screen);
 100    struct svga_winsys_screen *sws = svgascreen->sws;
 101    SVGA3dDevCapResult result;
 102
 103    switch (param) {
 104    case PIPE_CAPF_MAX_LINE_WIDTH:
 105       /* fall-through */
 106    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 107       return 7.0;
 108
 109    case PIPE_CAPF_MAX_POINT_WIDTH:
 110       /* fall-through */
 111    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 112       return svgascreen->maxPointSize;
 113
 114    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 115       if(!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY, &result))
 116          return 4.0f;
 117       return (float) result.u;
 118
 119    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 120       return 15.0;
 121    case PIPE_CAPF_GUARD_BAND_LEFT:
 122    case PIPE_CAPF_GUARD_BAND_TOP:
 123    case PIPE_CAPF_GUARD_BAND_RIGHT:
 124    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 125       return 0.0;
 126    }
 127
 128    debug_printf("Unexpected PIPE_CAPF_ query %u\n", param);
 129    return 0;
 130 }
 131
 132
 133 static int
 134 svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
 135 {
 136    struct svga_screen *svgascreen = svga_screen(screen);
 137    struct svga_winsys_screen *sws = svgascreen->sws;
 138    SVGA3dDevCapResult result;
 139
 140    switch (param) {
 141    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 142       return 16;
 143    case PIPE_CAP_NPOT_TEXTURES:
 144    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 145       return 1;
 146    case PIPE_CAP_TWO_SIDED_STENCIL:
 147       return 1;
 148    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 149       return 0;
 150    case PIPE_CAP_ANISOTROPIC_FILTER:
 151       return 1;
 152    case PIPE_CAP_POINT_SPRITE:
 153       return 1;
 154    case PIPE_CAP_TGSI_TEXCOORD:
 155       return 0;
 156    case PIPE_CAP_MAX_RENDER_TARGETS:
 157       if(!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_RENDER_TARGETS, &result))
 158          return 1;
 159       if(!result.u)
 160          return 1;
 161       return MIN2(result.u, PIPE_MAX_COLOR_BUFS);
 162    case PIPE_CAP_OCCLUSION_QUERY:
 163       return 1;
 164    case PIPE_CAP_QUERY_TIME_ELAPSED:
 165       return 0;
 166    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 167       return 1;
 168    case PIPE_CAP_TEXTURE_SWIZZLE:
 169       return 1;
 170    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 171       return 0;
 172    case PIPE_CAP_USER_VERTEX_BUFFERS:
 173    case PIPE_CAP_USER_INDEX_BUFFERS:
 174       return 0;
 175    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 176       return 1;
 177    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 178       return 16;
 179
 180    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 181       {
 182          unsigned levels = SVGA_MAX_TEXTURE_LEVELS;
 183          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH, &result))
 184             levels = MIN2(util_logbase2(result.u) + 1, levels);
 185          else
 186             levels = 12 /* 2048x2048 */;
 187          if (sws->get_cap(sws, SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT, &result))
 188             levels = MIN2(util_logbase2(result.u) + 1, levels);
 189          else
 190             levels = 12 /* 2048x2048 */;
 191          return levels;
 192       }
 193
 194    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 195       if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VOLUME_EXTENT, &result))
 196          return 8;  /* max 128x128x128 */
 197       return MIN2(util_logbase2(result.u) + 1, SVGA_MAX_TEXTURE_LEVELS);
 198
 199    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 200       /*
 201        * No mechanism to query the host, and at least limited to 2048x2048 on
 202        * certain hardware.
 203        */
 204       return MIN2(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
 205                   12 /* 2048x2048 */);
 206
 207    case PIPE_CAP_BLEND_EQUATION_SEPARATE: /* req. for GL 1.5 */
 208       return 1;
 209
 210    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 211       return 1;
 212    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 213       return 0;
 214    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 215       return 0;
 216    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 217       return 1;
 218
 219    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 220       return 1; /* The color outputs of vertex shaders are not clamped */
 221    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 222       return 0; /* The driver can't clamp vertex colors */
 223    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 224       return 0; /* The driver can't clamp fragment colors */
 225
 226    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 227       return 1; /* expected for GL_ARB_framebuffer_object */
 228
 229    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 230       return 120;
 231
 232    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 233       return 0;
 234
 235    /* Unsupported features */
 236    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 237    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 238    case PIPE_CAP_SM3:
 239    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 240    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 241    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 242    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 243    case PIPE_CAP_INDEP_BLEND_ENABLE:
 244    case PIPE_CAP_INDEP_BLEND_FUNC:
 245    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 246    case PIPE_CAP_PRIMITIVE_RESTART:
 247    case PIPE_CAP_TGSI_INSTANCEID:
 248    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 249    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 250    case PIPE_CAP_SCALED_RESOLVE:
 251    case PIPE_CAP_MIN_TEXEL_OFFSET:
 252    case PIPE_CAP_MAX_TEXEL_OFFSET:
 253    case PIPE_CAP_CONDITIONAL_RENDER:
 254    case PIPE_CAP_TEXTURE_BARRIER:
 255    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 256    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 257    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 258    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 259    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 260    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 261    case PIPE_CAP_COMPUTE:
 262    case PIPE_CAP_START_INSTANCE:
 263    case PIPE_CAP_QUERY_TIMESTAMP:
 264    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 265    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 266    case PIPE_CAP_CUBE_MAP_ARRAY:
 267    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 268    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 269    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 270    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 271       return 0;
 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          return 16;
 337       default:
 338          debug_printf("Unexpected fragment shader query %u\n", param);
 339          return 0;
 340       }
 341       break;
 342    case PIPE_SHADER_VERTEX:
 343       switch (param)
 344       {
 345       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 346       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 347          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS, &result))
 348             return 512;
 349          return result.u;
 350       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 351       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 352          /* XXX: until we have vertex texture support */
 353          return 0;
 354       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 355          return SVGA3D_MAX_NESTING_LEVEL;
 356       case PIPE_SHADER_CAP_MAX_INPUTS:
 357          return 16;
 358       case PIPE_SHADER_CAP_MAX_CONSTS:
 359          return 256;
 360       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 361          return 1;
 362       case PIPE_SHADER_CAP_MAX_TEMPS:
 363          if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS, &result))
 364             return 32;
 365          return MIN2(result.u, SVGA3D_TEMPREG_MAX);
 366       case PIPE_SHADER_CAP_MAX_ADDRS:
 367          return 1;
 368       case PIPE_SHADER_CAP_MAX_PREDS:
 369          return 1;
 370       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 371          return 0;
 372       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 373          return 0;
 374       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 375       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 376          return 1;
 377       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 378          return 0;
 379       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 380          return 1;
 381       case PIPE_SHADER_CAP_SUBROUTINES:
 382          return 0;
 383       case PIPE_SHADER_CAP_INTEGERS:
 384          return 0;
 385       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 386          return 0;
 387       default:
 388          debug_printf("Unexpected vertex shader query %u\n", param);
 389          return 0;
 390       }
 391       break;
 392    case PIPE_SHADER_GEOMETRY:
 393    case PIPE_SHADER_COMPUTE:
 394       /* no support for geometry or compute shaders at this time */
 395       return 0;
 396    default:
 397       debug_printf("Unexpected shader type (%u) query\n", shader);
 398       return 0;
 399    }
 400    return 0;
 401 }
 402
 403
 404 static boolean
 405 svga_is_format_supported( struct pipe_screen *screen,
 406                           enum pipe_format format,
 407                           enum pipe_texture_target target,
 408                           unsigned sample_count,
 409                           unsigned tex_usage)
 410 {
 411    struct svga_screen *ss = svga_screen(screen);
 412    SVGA3dSurfaceFormat svga_format;
 413    SVGA3dSurfaceFormatCaps caps;
 414    SVGA3dSurfaceFormatCaps mask;
 415
 416    assert(tex_usage);
 417
 418    if (sample_count > 1) {
 419       return FALSE;
 420    }
 421
 422    svga_format = svga_translate_format(ss, format, tex_usage);
 423    if (svga_format == SVGA3D_FORMAT_INVALID) {
 424       return FALSE;
 425    }
 426
 427    /*
 428     * Override host capabilities, so that we end up with the same
 429     * visuals for all virtual hardware implementations.
 430     */
 431
 432    if (tex_usage & PIPE_BIND_DISPLAY_TARGET) {
 433       switch (svga_format) {
 434       case SVGA3D_A8R8G8B8:
 435       case SVGA3D_X8R8G8B8:
 436       case SVGA3D_R5G6B5:
 437          break;
 438
 439       /* Often unsupported/problematic. This means we end up with the same
 440        * visuals for all virtual hardware implementations.
 441        */
 442       case SVGA3D_A4R4G4B4:
 443       case SVGA3D_A1R5G5B5:
 444          return FALSE;
 445
 446       default:
 447          return FALSE;
 448       }
 449    }
 450
 451    /*
 452     * Query the host capabilities.
 453     */
 454
 455    svga_get_format_cap(ss, svga_format, &caps);
 456
 457    mask.value = 0;
 458    if (tex_usage & PIPE_BIND_RENDER_TARGET) {
 459       mask.offscreenRenderTarget = 1;
 460    }
 461    if (tex_usage & PIPE_BIND_DEPTH_STENCIL) {
 462       mask.zStencil = 1;
 463    }
 464    if (tex_usage & PIPE_BIND_SAMPLER_VIEW) {
 465       mask.texture = 1;
 466    }
 467
 468    return (caps.value & mask.value) == mask.value;
 469 }
 470
 471
 472 static void
 473 svga_fence_reference(struct pipe_screen *screen,
 474                      struct pipe_fence_handle **ptr,
 475                      struct pipe_fence_handle *fence)
 476 {
 477    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
 478    sws->fence_reference(sws, ptr, fence);
 479 }
 480
 481
 482 static boolean
 483 svga_fence_signalled(struct pipe_screen *screen,
 484                      struct pipe_fence_handle *fence)
 485 {
 486    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
 487    return sws->fence_signalled(sws, fence, 0) == 0;
 488 }
 489
 490
 491 static boolean
 492 svga_fence_finish(struct pipe_screen *screen,
 493                   struct pipe_fence_handle *fence,
 494                   uint64_t timeout)
 495 {
 496    struct svga_winsys_screen *sws = svga_screen(screen)->sws;
 497
 498    SVGA_DBG(DEBUG_DMA|DEBUG_PERF, "%s fence_ptr %p\n",
 499             __FUNCTION__, fence);
 500
 501    return sws->fence_finish(sws, fence, 0) == 0;
 502 }
 503
 504
 505 static int
 506 svga_get_driver_query_info(struct pipe_screen *screen,
 507                            unsigned index,
 508                            struct pipe_driver_query_info *info)
 509 {
 510    static const struct pipe_driver_query_info queries[] = {
 511       {"draw-calls", SVGA_QUERY_DRAW_CALLS, 0, FALSE},
 512       {"fallbacks", SVGA_QUERY_FALLBACKS, 0, FALSE},
 513       {"memory-used", SVGA_QUERY_MEMORY_USED, 0, TRUE}
 514    };
 515
 516    if (!info)
 517       return Elements(queries);
 518
 519    if (index >= Elements(queries))
 520       return 0;
 521
 522    *info = queries[index];
 523    return 1;
 524 }
 525
 526
 527 static void
 528 svga_destroy_screen( struct pipe_screen *screen )
 529 {
 530    struct svga_screen *svgascreen = svga_screen(screen);
 531
 532    svga_screen_cache_cleanup(svgascreen);
 533
 534    pipe_mutex_destroy(svgascreen->swc_mutex);
 535    pipe_mutex_destroy(svgascreen->tex_mutex);
 536
 537    svgascreen->sws->destroy(svgascreen->sws);
 538
 539    FREE(svgascreen);
 540 }
 541
 542
 543 /**
 544  * Create a new svga_screen object
 545  */
 546 struct pipe_screen *
 547 svga_screen_create(struct svga_winsys_screen *sws)
 548 {
 549    struct svga_screen *svgascreen;
 550    struct pipe_screen *screen;
 551    SVGA3dDevCapResult result;
 552    boolean use_vs30, use_ps30;
 553
 554 #ifdef DEBUG
 555    SVGA_DEBUG = debug_get_flags_option("SVGA_DEBUG", svga_debug_flags, 0 );
 556 #endif
 557
 558    svgascreen = CALLOC_STRUCT(svga_screen);
 559    if (!svgascreen)
 560       goto error1;
 561
 562    svgascreen->debug.force_level_surface_view =
 563       debug_get_bool_option("SVGA_FORCE_LEVEL_SURFACE_VIEW", FALSE);
 564    svgascreen->debug.force_surface_view =
 565       debug_get_bool_option("SVGA_FORCE_SURFACE_VIEW", FALSE);
 566    svgascreen->debug.force_sampler_view =
 567       debug_get_bool_option("SVGA_FORCE_SAMPLER_VIEW", FALSE);
 568    svgascreen->debug.no_surface_view =
 569       debug_get_bool_option("SVGA_NO_SURFACE_VIEW", FALSE);
 570    svgascreen->debug.no_sampler_view =
 571       debug_get_bool_option("SVGA_NO_SAMPLER_VIEW", FALSE);
 572
 573    screen = &svgascreen->screen;
 574
 575    screen->destroy = svga_destroy_screen;
 576    screen->get_name = svga_get_name;
 577    screen->get_vendor = svga_get_vendor;
 578    screen->get_param = svga_get_param;
 579    screen->get_shader_param = svga_get_shader_param;
 580    screen->get_paramf = svga_get_paramf;
 581    screen->is_format_supported = svga_is_format_supported;
 582    screen->context_create = svga_context_create;
 583    screen->fence_reference = svga_fence_reference;
 584    screen->fence_signalled = svga_fence_signalled;
 585    screen->fence_finish = svga_fence_finish;
 586    screen->get_driver_query_info = svga_get_driver_query_info;
 587    svgascreen->sws = sws;
 588
 589    svga_init_screen_resource_functions(svgascreen);
 590
 591    if (sws->get_hw_version) {
 592       svgascreen->hw_version = sws->get_hw_version(sws);
 593    } else {
 594       svgascreen->hw_version = SVGA3D_HWVERSION_WS65_B1;
 595    }
 596
 597    use_ps30 =
 598       sws->get_cap(sws, SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION, &result) &&
 599       result.u >= SVGA3DPSVERSION_30 ? TRUE : FALSE;
 600
 601    use_vs30 =
 602       sws->get_cap(sws, SVGA3D_DEVCAP_VERTEX_SHADER_VERSION, &result) &&
 603       result.u >= SVGA3DVSVERSION_30 ? TRUE : FALSE;
 604
 605    /* we require Shader model 3.0 or later */
 606    if (!use_ps30 || !use_vs30)
 607       goto error2;
 608
 609    /*
 610     * The D16, D24X8, and D24S8 formats always do an implicit shadow compare
 611     * when sampled from, where as the DF16, DF24, and D24S8_INT do not.  So
 612     * we prefer the later when available.
 613     *
 614     * This mimics hardware vendors extensions for D3D depth sampling. See also
 615     * http://aras-p.info/texts/D3D9GPUHacks.html
 616     */
 617
 618    {
 619       boolean has_df16, has_df24, has_d24s8_int;
 620       SVGA3dSurfaceFormatCaps caps;
 621       SVGA3dSurfaceFormatCaps mask;
 622       mask.value = 0;
 623       mask.zStencil = 1;
 624       mask.texture = 1;
 625
 626       svgascreen->depth.z16 = SVGA3D_Z_D16;
 627       svgascreen->depth.x8z24 = SVGA3D_Z_D24X8;
 628       svgascreen->depth.s8z24 = SVGA3D_Z_D24S8;
 629
 630       svga_get_format_cap(svgascreen, SVGA3D_Z_DF16, &caps);
 631       has_df16 = (caps.value & mask.value) == mask.value;
 632
 633       svga_get_format_cap(svgascreen, SVGA3D_Z_DF24, &caps);
 634       has_df24 = (caps.value & mask.value) == mask.value;
 635
 636       svga_get_format_cap(svgascreen, SVGA3D_Z_D24S8_INT, &caps);
 637       has_d24s8_int = (caps.value & mask.value) == mask.value;
 638
 639       /* XXX: We might want some other logic here.
 640        * Like if we only have d24s8_int we should
 641        * emulate the other formats with that.
 642        */
 643       if (has_df16) {
 644          svgascreen->depth.z16 = SVGA3D_Z_DF16;
 645       }
 646       if (has_df24) {
 647          svgascreen->depth.x8z24 = SVGA3D_Z_DF24;
 648       }
 649       if (has_d24s8_int) {
 650          svgascreen->depth.s8z24 = SVGA3D_Z_D24S8_INT;
 651       }
 652    }
 653
 654    if (!sws->get_cap(sws, SVGA3D_DEVCAP_MAX_POINT_SIZE, &result)) {
 655       svgascreen->maxPointSize = 1.0F;
 656    } else {
 657       /* Keep this to a reasonable size to avoid failures in
 658        * conform/pntaa.c:
 659        */
 660       svgascreen->maxPointSize = MIN2(result.f, 80.0f);
 661    }
 662
 663    pipe_mutex_init(svgascreen->tex_mutex);
 664    pipe_mutex_init(svgascreen->swc_mutex);
 665
 666    svga_screen_cache_init(svgascreen);
 667
 668    return screen;
 669 error2:
 670    FREE(svgascreen);
 671 error1:
 672    return NULL;
 673 }
 674
 675 struct svga_winsys_screen *
 676 svga_winsys_screen(struct pipe_screen *screen)
 677 {
 678    return svga_screen(screen)->sws;
 679 }
 680
 681 #ifdef DEBUG
 682 struct svga_screen *
 683 svga_screen(struct pipe_screen *screen)
 684 {
 685    assert(screen);
 686    assert(screen->destroy == svga_destroy_screen);
 687    return (struct svga_screen *)screen;
 688 }
 689 #endif