src/gallium/drivers/llvmpipe/lp_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "util/u_memory.h"
  30 #include "util/u_math.h"
  31 #include "util/u_cpu_detect.h"
  32 #include "util/u_format.h"
  33 #include "util/u_string.h"
  34 #include "util/u_format_s3tc.h"
  35 #include "pipe/p_defines.h"
  36 #include "pipe/p_screen.h"
  37 #include "draw/draw_context.h"
  38 #include "gallivm/lp_bld_type.h"
  39
  40 #include "os/os_time.h"
  41 #include "lp_texture.h"
  42 #include "lp_fence.h"
  43 #include "lp_jit.h"
  44 #include "lp_screen.h"
  45 #include "lp_context.h"
  46 #include "lp_debug.h"
  47 #include "lp_public.h"
  48 #include "lp_limits.h"
  49 #include "lp_rast.h"
  50
  51 #include "state_tracker/sw_winsys.h"
  52
  53 #ifdef DEBUG
  54 int LP_DEBUG = 0;
  55
  56 static const struct debug_named_value lp_debug_flags[] = {
  57    { "pipe",   DEBUG_PIPE, NULL },
  58    { "tgsi",   DEBUG_TGSI, NULL },
  59    { "tex",    DEBUG_TEX, NULL },
  60    { "setup",  DEBUG_SETUP, NULL },
  61    { "rast",   DEBUG_RAST, NULL },
  62    { "query",  DEBUG_QUERY, NULL },
  63    { "screen", DEBUG_SCREEN, NULL },
  64    { "counters", DEBUG_COUNTERS, NULL },
  65    { "scene", DEBUG_SCENE, NULL },
  66    { "fence", DEBUG_FENCE, NULL },
  67    { "mem", DEBUG_MEM, NULL },
  68    { "fs", DEBUG_FS, NULL },
  69    DEBUG_NAMED_VALUE_END
  70 };
  71 #endif
  72
  73 int LP_PERF = 0;
  74 static const struct debug_named_value lp_perf_flags[] = {
  75    { "texmem",         PERF_TEX_MEM, NULL },
  76    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  77    { "no_linear",      PERF_NO_LINEAR, NULL },
  78    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  79    { "no_tex",         PERF_NO_TEX, NULL },
  80    { "no_blend",       PERF_NO_BLEND, NULL },
  81    { "no_depth",       PERF_NO_DEPTH, NULL },
  82    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  83    DEBUG_NAMED_VALUE_END
  84 };
  85
  86
  87 static const char *
  88 llvmpipe_get_vendor(struct pipe_screen *screen)
  89 {
  90    return "VMware, Inc.";
  91 }
  92
  93
  94 static const char *
  95 llvmpipe_get_name(struct pipe_screen *screen)
  96 {
  97    static char buf[100];
  98    util_snprintf(buf, sizeof(buf), "llvmpipe (LLVM %u.%u, %u bits)",
  99                  HAVE_LLVM >> 8, HAVE_LLVM & 0xff,
 100                  lp_native_vector_width );
 101    return buf;
 102 }
 103
 104
 105 static int
 106 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 107 {
 108    switch (param) {
 109    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 110       return 2 * PIPE_MAX_SAMPLERS;  /* VS + FS samplers */
 111    case PIPE_CAP_NPOT_TEXTURES:
 112       return 1;
 113    case PIPE_CAP_TWO_SIDED_STENCIL:
 114       return 1;
 115    case PIPE_CAP_SM3:
 116       return 1;
 117    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 118       return 1;
 119    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 120       return PIPE_MAX_SO_BUFFERS;
 121    case PIPE_CAP_ANISOTROPIC_FILTER:
 122       return 0;
 123    case PIPE_CAP_POINT_SPRITE:
 124       return 1;
 125    case PIPE_CAP_MAX_RENDER_TARGETS:
 126       return PIPE_MAX_COLOR_BUFS;
 127    case PIPE_CAP_OCCLUSION_QUERY:
 128       return 1;
 129    case PIPE_CAP_QUERY_TIME_ELAPSED:
 130       return 0;
 131    case PIPE_CAP_QUERY_TIMESTAMP:
 132       return 1;
 133    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 134       return 1;
 135    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 136       return 1;
 137    case PIPE_CAP_TEXTURE_SWIZZLE:
 138       return 1;
 139    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 140       return LP_MAX_TEXTURE_2D_LEVELS;
 141    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 142       return LP_MAX_TEXTURE_3D_LEVELS;
 143    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 144       return LP_MAX_TEXTURE_CUBE_LEVELS;
 145    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 146       return LP_MAX_TEXTURE_ARRAY_LAYERS;
 147    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 148       return 1;
 149    case PIPE_CAP_INDEP_BLEND_ENABLE:
 150       return 1;
 151    case PIPE_CAP_INDEP_BLEND_FUNC:
 152       return 1;
 153    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 154    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 155       return 1;
 156    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 157    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 158       return 0;
 159    case PIPE_CAP_PRIMITIVE_RESTART:
 160       return 1;
 161    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 162       return 0;
 163    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 164       return 0;
 165    case PIPE_CAP_TGSI_INSTANCEID:
 166    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 167       return 1;
 168    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 169       return 0;
 170    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 171       return 1;
 172    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 173    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 174       return 0;
 175    case PIPE_CAP_SCALED_RESOLVE:
 176       return 0;
 177    /* this is a lie could support arbitrary large offsets */
 178    case PIPE_CAP_MIN_TEXEL_OFFSET:
 179       return -8;
 180    case PIPE_CAP_MAX_TEXEL_OFFSET:
 181       return 7;
 182    case PIPE_CAP_CONDITIONAL_RENDER:
 183       return 1;
 184    case PIPE_CAP_TEXTURE_BARRIER:
 185       return 0;
 186    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 187    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 188       return 16*4;
 189    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 190       return 1;
 191    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 192    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 193       return 0;
 194    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 195    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 196       return 1;
 197    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 198       return 120;
 199    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 200       return 0;
 201    case PIPE_CAP_COMPUTE:
 202       return 0;
 203    case PIPE_CAP_USER_VERTEX_BUFFERS:
 204    case PIPE_CAP_USER_INDEX_BUFFERS:
 205       return 1;
 206    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 207       return 0;
 208    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 209    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 210    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 211       return 0;
 212
 213    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 214       return 16;
 215    case PIPE_CAP_START_INSTANCE:
 216    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 217    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 218    case PIPE_CAP_CUBE_MAP_ARRAY:
 219    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 220    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 221       return 0;
 222    }
 223    /* should only get here on unhandled cases */
 224    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 225    return 0;
 226 }
 227
 228 static int
 229 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 230 {
 231    switch(shader)
 232    {
 233    case PIPE_SHADER_FRAGMENT:
 234       switch (param) {
 235       default:
 236          return gallivm_get_shader_param(param);
 237       }
 238    case PIPE_SHADER_VERTEX:
 239    case PIPE_SHADER_GEOMETRY:
 240       switch (param) {
 241       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 242          /* At this time, the draw module and llvmpipe driver only
 243           * support vertex shader texture lookups when LLVM is enabled in
 244           * the draw module.
 245           */
 246          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 247             return PIPE_MAX_SAMPLERS;
 248          else
 249             return 0;
 250       default:
 251          return draw_get_shader_param(shader, param);
 252       }
 253    default:
 254       return 0;
 255    }
 256 }
 257
 258 static float
 259 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 260 {
 261    switch (param) {
 262    case PIPE_CAPF_MAX_LINE_WIDTH:
 263       /* fall-through */
 264    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 265       return 255.0; /* arbitrary */
 266    case PIPE_CAPF_MAX_POINT_WIDTH:
 267       /* fall-through */
 268    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 269       return 255.0; /* arbitrary */
 270    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 271       return 16.0; /* not actually signficant at this time */
 272    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 273       return 16.0; /* arbitrary */
 274    case PIPE_CAPF_GUARD_BAND_LEFT:
 275    case PIPE_CAPF_GUARD_BAND_TOP:
 276    case PIPE_CAPF_GUARD_BAND_RIGHT:
 277    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 278       return 0.0;
 279    }
 280    /* should only get here on unhandled cases */
 281    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 282    return 0.0;
 283 }
 284
 285
 286 /**
 287  * Query format support for creating a texture, drawing surface, etc.
 288  * \param format  the format to test
 289  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 290  */
 291 static boolean
 292 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 293                               enum pipe_format format,
 294                               enum pipe_texture_target target,
 295                               unsigned sample_count,
 296                               unsigned bind)
 297 {
 298    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 299    struct sw_winsys *winsys = screen->winsys;
 300    const struct util_format_description *format_desc;
 301
 302    format_desc = util_format_description(format);
 303    if (!format_desc)
 304       return FALSE;
 305
 306    assert(target == PIPE_BUFFER ||
 307           target == PIPE_TEXTURE_1D ||
 308           target == PIPE_TEXTURE_1D_ARRAY ||
 309           target == PIPE_TEXTURE_2D ||
 310           target == PIPE_TEXTURE_2D_ARRAY ||
 311           target == PIPE_TEXTURE_RECT ||
 312           target == PIPE_TEXTURE_3D ||
 313           target == PIPE_TEXTURE_CUBE);
 314
 315    if (sample_count > 1)
 316       return FALSE;
 317
 318    if (bind & PIPE_BIND_RENDER_TARGET) {
 319       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 320          return FALSE;
 321
 322       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 323          return FALSE;
 324       assert(format_desc->block.width == 1);
 325       assert(format_desc->block.height == 1);
 326
 327       if (format_desc->is_mixed)
 328          return FALSE;
 329
 330       if (!format_desc->is_array && !format_desc->is_bitmask)
 331          return FALSE;
 332
 333       /*
 334        * XXX refuse formats known to crash in generate_unswizzled_blend().
 335        * These include all 3-channel 24bit RGB8 variants, plus 48bit
 336        * (except those using floats) 3-channel RGB16 variants (the latter
 337        * seems to be more of a llvm bug though).
 338        * The mesa state tracker only seems to use these for SINT/UINT formats.
 339        */
 340       if (format_desc->is_array && format_desc->nr_channels == 3) {
 341          if (format_desc->block.bits == 24 || (format_desc->block.bits == 48 &&
 342                !util_format_is_float(format))) {
 343             return FALSE;
 344          }
 345       }
 346    }
 347
 348    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 349       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 350          return FALSE;
 351    }
 352
 353    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 354       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 355          return FALSE;
 356
 357       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 358          return FALSE;
 359
 360       /* TODO: Support Z32_FLOAT_S8X24_UINT. See lp_bld_depth.c. */
 361       if (format_desc->block.bits > 32)
 362          return FALSE;
 363
 364       /* TODO: Support stencil-only formats */
 365       if (format_desc->swizzle[0] == UTIL_FORMAT_SWIZZLE_NONE) {
 366          return FALSE;
 367       }
 368    }
 369
 370    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 371       return util_format_s3tc_enabled;
 372    }
 373
 374    /*
 375     * Everything can be supported by u_format
 376     * (those without fetch_rgba_float might be not but shouldn't hit that)
 377     */
 378
 379    return TRUE;
 380 }
 381
 382
 383
 384
 385 static void
 386 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 387                            struct pipe_resource *resource,
 388                            unsigned level, unsigned layer,
 389                            void *context_private)
 390 {
 391    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 392    struct sw_winsys *winsys = screen->winsys;
 393    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 394
 395    assert(texture->dt);
 396    if (texture->dt)
 397       winsys->displaytarget_display(winsys, texture->dt, context_private);
 398 }
 399
 400
 401 static void
 402 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 403 {
 404    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 405    struct sw_winsys *winsys = screen->winsys;
 406
 407    if (screen->rast)
 408       lp_rast_destroy(screen->rast);
 409
 410    lp_jit_screen_cleanup(screen);
 411
 412    if(winsys->destroy)
 413       winsys->destroy(winsys);
 414
 415    pipe_mutex_destroy(screen->rast_mutex);
 416
 417    FREE(screen);
 418 }
 419
 420
 421
 422
 423 /**
 424  * Fence reference counting.
 425  */
 426 static void
 427 llvmpipe_fence_reference(struct pipe_screen *screen,
 428                          struct pipe_fence_handle **ptr,
 429                          struct pipe_fence_handle *fence)
 430 {
 431    struct lp_fence **old = (struct lp_fence **) ptr;
 432    struct lp_fence *f = (struct lp_fence *) fence;
 433
 434    lp_fence_reference(old, f);
 435 }
 436
 437
 438 /**
 439  * Has the fence been executed/finished?
 440  */
 441 static boolean
 442 llvmpipe_fence_signalled(struct pipe_screen *screen,
 443                          struct pipe_fence_handle *fence)
 444 {
 445    struct lp_fence *f = (struct lp_fence *) fence;
 446    return lp_fence_signalled(f);
 447 }
 448
 449
 450 /**
 451  * Wait for the fence to finish.
 452  */
 453 static boolean
 454 llvmpipe_fence_finish(struct pipe_screen *screen,
 455                       struct pipe_fence_handle *fence_handle,
 456                       uint64_t timeout)
 457 {
 458    struct lp_fence *f = (struct lp_fence *) fence_handle;
 459
 460    lp_fence_wait(f);
 461    return TRUE;
 462 }
 463
 464 static uint64_t
 465 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 466 {
 467    return os_time_get_nano();
 468 }
 469
 470 /**
 471  * Create a new pipe_screen object
 472  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 473  */
 474 struct pipe_screen *
 475 llvmpipe_create_screen(struct sw_winsys *winsys)
 476 {
 477    struct llvmpipe_screen *screen;
 478
 479 #ifdef PIPE_ARCH_X86
 480    /* require SSE2 due to LLVM PR6960. */
 481    util_cpu_detect();
 482    if (!util_cpu_caps.has_sse2)
 483        return NULL;
 484 #endif
 485
 486 #ifdef DEBUG
 487    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 488 #endif
 489
 490    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 491
 492    screen = CALLOC_STRUCT(llvmpipe_screen);
 493    if (!screen)
 494       return NULL;
 495
 496    screen->winsys = winsys;
 497
 498    screen->base.destroy = llvmpipe_destroy_screen;
 499
 500    screen->base.get_name = llvmpipe_get_name;
 501    screen->base.get_vendor = llvmpipe_get_vendor;
 502    screen->base.get_param = llvmpipe_get_param;
 503    screen->base.get_shader_param = llvmpipe_get_shader_param;
 504    screen->base.get_paramf = llvmpipe_get_paramf;
 505    screen->base.is_format_supported = llvmpipe_is_format_supported;
 506
 507    screen->base.context_create = llvmpipe_create_context;
 508    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 509    screen->base.fence_reference = llvmpipe_fence_reference;
 510    screen->base.fence_signalled = llvmpipe_fence_signalled;
 511    screen->base.fence_finish = llvmpipe_fence_finish;
 512
 513    screen->base.get_timestamp = llvmpipe_get_timestamp;
 514
 515    llvmpipe_init_screen_resource_funcs(&screen->base);
 516
 517    lp_jit_screen_init(screen);
 518
 519    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 520 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 521    screen->num_threads = 0;
 522 #endif
 523    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 524    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 525
 526    screen->rast = lp_rast_create(screen->num_threads);
 527    if (!screen->rast) {
 528       lp_jit_screen_cleanup(screen);
 529       FREE(screen);
 530       return NULL;
 531    }
 532    pipe_mutex_init(screen->rast_mutex);
 533
 534    util_format_s3tc_init();
 535
 536    return &screen->base;
 537 }