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