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