src/gallium/drivers/llvmpipe/lp_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   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 VMWARE 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    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 113       return 1;
 114    case PIPE_CAP_TWO_SIDED_STENCIL:
 115       return 1;
 116    case PIPE_CAP_SM3:
 117       return 1;
 118    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 119       return 1;
 120    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 121       return PIPE_MAX_SO_BUFFERS;
 122    case PIPE_CAP_ANISOTROPIC_FILTER:
 123       return 0;
 124    case PIPE_CAP_POINT_SPRITE:
 125       return 1;
 126    case PIPE_CAP_MAX_RENDER_TARGETS:
 127       return PIPE_MAX_COLOR_BUFS;
 128    case PIPE_CAP_OCCLUSION_QUERY:
 129       return 1;
 130    case PIPE_CAP_QUERY_TIME_ELAPSED:
 131       return 0;
 132    case PIPE_CAP_QUERY_TIMESTAMP:
 133       return 1;
 134    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 135       return 0;
 136    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 137       return 1;
 138    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 139       return 1;
 140    case PIPE_CAP_TEXTURE_SWIZZLE:
 141       return 1;
 142    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 143       return 0;
 144    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 145       return LP_MAX_TEXTURE_2D_LEVELS;
 146    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 147       return LP_MAX_TEXTURE_3D_LEVELS;
 148    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 149       return LP_MAX_TEXTURE_CUBE_LEVELS;
 150    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 151       return LP_MAX_TEXTURE_ARRAY_LAYERS;
 152    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 153       return 1;
 154    case PIPE_CAP_INDEP_BLEND_ENABLE:
 155       return 1;
 156    case PIPE_CAP_INDEP_BLEND_FUNC:
 157       return 1;
 158    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 159    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 160    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 161       return 1;
 162    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 163       return 0;
 164    case PIPE_CAP_PRIMITIVE_RESTART:
 165       return 1;
 166    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 167       return 1;
 168    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 169       return 0;
 170    case PIPE_CAP_TGSI_INSTANCEID:
 171    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 172       return 1;
 173    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 174       return 0;
 175    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 176       return 1;
 177    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 178    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 179       return 1;
 180    /* this is a lie could support arbitrary large offsets */
 181    case PIPE_CAP_MIN_TEXEL_OFFSET:
 182       return -8;
 183    case PIPE_CAP_MAX_TEXEL_OFFSET:
 184       return 7;
 185    case PIPE_CAP_CONDITIONAL_RENDER:
 186       return 1;
 187    case PIPE_CAP_TEXTURE_BARRIER:
 188       return 0;
 189    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 190    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 191       return 16*4;
 192    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 193       return 1;
 194    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 195       return 0;
 196    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 197    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 198       return 1;
 199    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 200       return 140;
 201    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 202       return 0;
 203    case PIPE_CAP_COMPUTE:
 204       return 0;
 205    case PIPE_CAP_USER_VERTEX_BUFFERS:
 206    case PIPE_CAP_USER_INDEX_BUFFERS:
 207       return 1;
 208    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 209       return 0;
 210    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 211    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 212    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 213    case PIPE_CAP_TGSI_TEXCOORD:
 214       return 0;
 215
 216    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 217       return 16;
 218    case PIPE_CAP_START_INSTANCE:
 219    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 220    case PIPE_CAP_CUBE_MAP_ARRAY:
 221       return 0;
 222    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 223       return 64;
 224    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 225       return 1;
 226    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 227       return 65536;
 228    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 229       return 1;
 230    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 231       return 0;
 232    case PIPE_CAP_MAX_VIEWPORTS:
 233       return PIPE_MAX_VIEWPORTS;
 234    case PIPE_CAP_ENDIANNESS:
 235       return PIPE_ENDIAN_NATIVE;
 236    case PIPE_CAP_TGSI_VS_LAYER:
 237       return 0;
 238    }
 239    /* should only get here on unhandled cases */
 240    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 241    return 0;
 242 }
 243
 244 static int
 245 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 246 {
 247    switch(shader)
 248    {
 249    case PIPE_SHADER_FRAGMENT:
 250       switch (param) {
 251       default:
 252          return gallivm_get_shader_param(param);
 253       }
 254    case PIPE_SHADER_VERTEX:
 255    case PIPE_SHADER_GEOMETRY:
 256       switch (param) {
 257       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 258          /* At this time, the draw module and llvmpipe driver only
 259           * support vertex shader texture lookups when LLVM is enabled in
 260           * the draw module.
 261           */
 262          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 263             return PIPE_MAX_SAMPLERS;
 264          else
 265             return 0;
 266       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 267          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 268             return PIPE_MAX_SHADER_SAMPLER_VIEWS;
 269          else
 270             return 0;
 271       default:
 272          return draw_get_shader_param(shader, param);
 273       }
 274    default:
 275       return 0;
 276    }
 277 }
 278
 279 static float
 280 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 281 {
 282    switch (param) {
 283    case PIPE_CAPF_MAX_LINE_WIDTH:
 284       /* fall-through */
 285    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 286       return 255.0; /* arbitrary */
 287    case PIPE_CAPF_MAX_POINT_WIDTH:
 288       /* fall-through */
 289    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 290       return 255.0; /* arbitrary */
 291    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 292       return 16.0; /* not actually signficant at this time */
 293    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 294       return 16.0; /* arbitrary */
 295    case PIPE_CAPF_GUARD_BAND_LEFT:
 296    case PIPE_CAPF_GUARD_BAND_TOP:
 297    case PIPE_CAPF_GUARD_BAND_RIGHT:
 298    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 299       return 0.0;
 300    }
 301    /* should only get here on unhandled cases */
 302    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 303    return 0.0;
 304 }
 305
 306
 307 /**
 308  * Query format support for creating a texture, drawing surface, etc.
 309  * \param format  the format to test
 310  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 311  */
 312 static boolean
 313 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 314                               enum pipe_format format,
 315                               enum pipe_texture_target target,
 316                               unsigned sample_count,
 317                               unsigned bind)
 318 {
 319    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 320    struct sw_winsys *winsys = screen->winsys;
 321    const struct util_format_description *format_desc;
 322
 323    format_desc = util_format_description(format);
 324    if (!format_desc)
 325       return FALSE;
 326
 327    assert(target == PIPE_BUFFER ||
 328           target == PIPE_TEXTURE_1D ||
 329           target == PIPE_TEXTURE_1D_ARRAY ||
 330           target == PIPE_TEXTURE_2D ||
 331           target == PIPE_TEXTURE_2D_ARRAY ||
 332           target == PIPE_TEXTURE_RECT ||
 333           target == PIPE_TEXTURE_3D ||
 334           target == PIPE_TEXTURE_CUBE);
 335
 336    if (sample_count > 1)
 337       return FALSE;
 338
 339    if (bind & PIPE_BIND_RENDER_TARGET) {
 340       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
 341          if (format_desc->nr_channels < 3)
 342             return FALSE;
 343       }
 344       else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 345          return FALSE;
 346
 347       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN &&
 348           format != PIPE_FORMAT_R11G11B10_FLOAT)
 349          return FALSE;
 350
 351       assert(format_desc->block.width == 1);
 352       assert(format_desc->block.height == 1);
 353
 354       if (format_desc->is_mixed)
 355          return FALSE;
 356
 357       if (!format_desc->is_array && !format_desc->is_bitmask &&
 358           format != PIPE_FORMAT_R11G11B10_FLOAT)
 359          return FALSE;
 360
 361       /*
 362        * XXX refuse formats known to crash in generate_unswizzled_blend().
 363        * These include all 3-channel 24bit RGB8 variants, plus 48bit
 364        * (except those using floats) 3-channel RGB16 variants (the latter
 365        * seems to be more of a llvm bug though).
 366        * The mesa state tracker only seems to use these for SINT/UINT formats.
 367        */
 368       if (format_desc->is_array && format_desc->nr_channels == 3) {
 369          if (format_desc->block.bits == 24 || (format_desc->block.bits == 48 &&
 370                !util_format_is_float(format))) {
 371             return FALSE;
 372          }
 373       }
 374    }
 375
 376    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 377       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 378          return FALSE;
 379    }
 380
 381    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 382       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 383          return FALSE;
 384
 385       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 386          return FALSE;
 387
 388       /* TODO: Support stencil-only formats */
 389       if (format_desc->swizzle[0] == UTIL_FORMAT_SWIZZLE_NONE) {
 390          return FALSE;
 391       }
 392    }
 393
 394    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 395       return util_format_s3tc_enabled;
 396    }
 397
 398    /*
 399     * Everything can be supported by u_format
 400     * (those without fetch_rgba_float might be not but shouldn't hit that)
 401     */
 402
 403    return TRUE;
 404 }
 405
 406
 407
 408
 409 static void
 410 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 411                            struct pipe_resource *resource,
 412                            unsigned level, unsigned layer,
 413                            void *context_private,
 414                            struct pipe_box *sub_box)
 415 {
 416    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 417    struct sw_winsys *winsys = screen->winsys;
 418    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 419
 420    assert(texture->dt);
 421    if (texture->dt)
 422       winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
 423 }
 424
 425 static void
 426 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 427 {
 428    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 429    struct sw_winsys *winsys = screen->winsys;
 430
 431    if (screen->rast)
 432       lp_rast_destroy(screen->rast);
 433
 434    lp_jit_screen_cleanup(screen);
 435
 436    if(winsys->destroy)
 437       winsys->destroy(winsys);
 438
 439    pipe_mutex_destroy(screen->rast_mutex);
 440
 441    FREE(screen);
 442 }
 443
 444
 445
 446
 447 /**
 448  * Fence reference counting.
 449  */
 450 static void
 451 llvmpipe_fence_reference(struct pipe_screen *screen,
 452                          struct pipe_fence_handle **ptr,
 453                          struct pipe_fence_handle *fence)
 454 {
 455    struct lp_fence **old = (struct lp_fence **) ptr;
 456    struct lp_fence *f = (struct lp_fence *) fence;
 457
 458    lp_fence_reference(old, f);
 459 }
 460
 461
 462 /**
 463  * Has the fence been executed/finished?
 464  */
 465 static boolean
 466 llvmpipe_fence_signalled(struct pipe_screen *screen,
 467                          struct pipe_fence_handle *fence)
 468 {
 469    struct lp_fence *f = (struct lp_fence *) fence;
 470    return lp_fence_signalled(f);
 471 }
 472
 473
 474 /**
 475  * Wait for the fence to finish.
 476  */
 477 static boolean
 478 llvmpipe_fence_finish(struct pipe_screen *screen,
 479                       struct pipe_fence_handle *fence_handle,
 480                       uint64_t timeout)
 481 {
 482    struct lp_fence *f = (struct lp_fence *) fence_handle;
 483
 484    lp_fence_wait(f);
 485    return TRUE;
 486 }
 487
 488 static uint64_t
 489 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 490 {
 491    return os_time_get_nano();
 492 }
 493
 494 /**
 495  * Create a new pipe_screen object
 496  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 497  */
 498 struct pipe_screen *
 499 llvmpipe_create_screen(struct sw_winsys *winsys)
 500 {
 501    struct llvmpipe_screen *screen;
 502
 503    util_cpu_detect();
 504
 505 #if defined(PIPE_ARCH_X86) && HAVE_LLVM < 0x0302
 506    /* require SSE2 due to LLVM PR6960. */
 507    if (!util_cpu_caps.has_sse2)
 508        return NULL;
 509 #endif
 510
 511 #ifdef DEBUG
 512    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 513 #endif
 514
 515    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 516
 517    screen = CALLOC_STRUCT(llvmpipe_screen);
 518    if (!screen)
 519       return NULL;
 520
 521    screen->winsys = winsys;
 522
 523    screen->base.destroy = llvmpipe_destroy_screen;
 524
 525    screen->base.get_name = llvmpipe_get_name;
 526    screen->base.get_vendor = llvmpipe_get_vendor;
 527    screen->base.get_param = llvmpipe_get_param;
 528    screen->base.get_shader_param = llvmpipe_get_shader_param;
 529    screen->base.get_paramf = llvmpipe_get_paramf;
 530    screen->base.is_format_supported = llvmpipe_is_format_supported;
 531
 532    screen->base.context_create = llvmpipe_create_context;
 533    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 534    screen->base.fence_reference = llvmpipe_fence_reference;
 535    screen->base.fence_signalled = llvmpipe_fence_signalled;
 536    screen->base.fence_finish = llvmpipe_fence_finish;
 537
 538    screen->base.get_timestamp = llvmpipe_get_timestamp;
 539
 540    llvmpipe_init_screen_resource_funcs(&screen->base);
 541
 542    lp_jit_screen_init(screen);
 543
 544    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 545 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 546    screen->num_threads = 0;
 547 #endif
 548    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 549    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 550
 551    screen->rast = lp_rast_create(screen->num_threads);
 552    if (!screen->rast) {
 553       lp_jit_screen_cleanup(screen);
 554       FREE(screen);
 555       return NULL;
 556    }
 557    pipe_mutex_init(screen->rast_mutex);
 558
 559    util_format_s3tc_init();
 560
 561    return &screen->base;
 562 }