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 0;
 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_TIMER_QUERY:
 130    case PIPE_CAP_QUERY_TIMESTAMP:
 131       return 1;
 132    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 133       return 1;
 134    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 135       return 1;
 136    case PIPE_CAP_TEXTURE_SWIZZLE:
 137       return 1;
 138    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 139       return LP_MAX_TEXTURE_2D_LEVELS;
 140    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 141       return LP_MAX_TEXTURE_3D_LEVELS;
 142    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 143       return LP_MAX_TEXTURE_CUBE_LEVELS;
 144    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 145       return LP_MAX_TEXTURE_ARRAY_LAYERS;
 146    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 147       return 1;
 148    case PIPE_CAP_INDEP_BLEND_ENABLE:
 149       return 1;
 150    case PIPE_CAP_INDEP_BLEND_FUNC:
 151       return 1;
 152    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 153    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 154       return 1;
 155    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 156    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 157       return 0;
 158    case PIPE_CAP_PRIMITIVE_RESTART:
 159       return 1;
 160    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 161       return 1;
 162    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 163       return 0;
 164    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 165       return 0;
 166    case PIPE_CAP_TGSI_INSTANCEID:
 167    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 168       return 1;
 169    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 170       return 0;
 171    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 172       return 1;
 173    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 174    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 175       return 0;
 176    case PIPE_CAP_SCALED_RESOLVE:
 177       return 0;
 178    /* this is a lie could support arbitrary large offsets */
 179    case PIPE_CAP_MIN_TEXEL_OFFSET:
 180       return -8;
 181    case PIPE_CAP_MAX_TEXEL_OFFSET:
 182       return 7;
 183    case PIPE_CAP_CONDITIONAL_RENDER:
 184       return 1;
 185    case PIPE_CAP_TEXTURE_BARRIER:
 186       return 0;
 187    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 188    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 189       return 16*4;
 190    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 191       return 0;
 192    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 193    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 194       return 0;
 195    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 196    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 197       return 1;
 198    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 199       return 120;
 200    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 201       return 0;
 202    case PIPE_CAP_COMPUTE:
 203       return 0;
 204    case PIPE_CAP_USER_VERTEX_BUFFERS:
 205    case PIPE_CAP_USER_INDEX_BUFFERS:
 206    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 207       return 1;
 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       return 0;
 220    }
 221    /* should only get here on unhandled cases */
 222    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 223    return 0;
 224 }
 225
 226 static int
 227 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 228 {
 229    switch(shader)
 230    {
 231    case PIPE_SHADER_FRAGMENT:
 232       switch (param) {
 233       default:
 234          return gallivm_get_shader_param(param);
 235       }
 236    case PIPE_SHADER_VERTEX:
 237    case PIPE_SHADER_GEOMETRY:
 238       switch (param) {
 239       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 240          /* At this time, the draw module and llvmpipe driver only
 241           * support vertex shader texture lookups when LLVM is enabled in
 242           * the draw module.
 243           */
 244          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 245             return PIPE_MAX_SAMPLERS;
 246          else
 247             return 0;
 248       default:
 249          return draw_get_shader_param(shader, param);
 250       }
 251    default:
 252       return 0;
 253    }
 254 }
 255
 256 static float
 257 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 258 {
 259    switch (param) {
 260    case PIPE_CAPF_MAX_LINE_WIDTH:
 261       /* fall-through */
 262    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 263       return 255.0; /* arbitrary */
 264    case PIPE_CAPF_MAX_POINT_WIDTH:
 265       /* fall-through */
 266    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 267       return 255.0; /* arbitrary */
 268    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 269       return 16.0; /* not actually signficant at this time */
 270    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 271       return 16.0; /* arbitrary */
 272    case PIPE_CAPF_GUARD_BAND_LEFT:
 273    case PIPE_CAPF_GUARD_BAND_TOP:
 274    case PIPE_CAPF_GUARD_BAND_RIGHT:
 275    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 276       return 0.0;
 277    }
 278    /* should only get here on unhandled cases */
 279    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 280    return 0.0;
 281 }
 282
 283
 284 /**
 285  * Query format support for creating a texture, drawing surface, etc.
 286  * \param format  the format to test
 287  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 288  */
 289 static boolean
 290 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 291                               enum pipe_format format,
 292                               enum pipe_texture_target target,
 293                               unsigned sample_count,
 294                               unsigned bind)
 295 {
 296    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 297    struct sw_winsys *winsys = screen->winsys;
 298    const struct util_format_description *format_desc;
 299
 300    format_desc = util_format_description(format);
 301    if (!format_desc)
 302       return FALSE;
 303
 304    /* Z16 support is missing, which breaks the blit */
 305    if (format == PIPE_FORMAT_Z16_UNORM)
 306       return FALSE;
 307
 308    assert(target == PIPE_BUFFER ||
 309           target == PIPE_TEXTURE_1D ||
 310           target == PIPE_TEXTURE_1D_ARRAY ||
 311           target == PIPE_TEXTURE_2D ||
 312           target == PIPE_TEXTURE_2D_ARRAY ||
 313           target == PIPE_TEXTURE_RECT ||
 314           target == PIPE_TEXTURE_3D ||
 315           target == PIPE_TEXTURE_CUBE);
 316
 317    if (sample_count > 1)
 318       return FALSE;
 319
 320    if (bind & PIPE_BIND_RENDER_TARGET) {
 321       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 322          return FALSE;
 323
 324       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 325          return FALSE;
 326       assert(format_desc->block.width == 1);
 327       assert(format_desc->block.height == 1);
 328
 329       if (format_desc->is_mixed)
 330          return FALSE;
 331
 332       if (!format_desc->is_array && !format_desc->is_bitmask)
 333          return FALSE;
 334    }
 335
 336    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 337       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 338          return FALSE;
 339    }
 340
 341    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 342       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 343          return FALSE;
 344
 345       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 346          return FALSE;
 347
 348       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 349       if (format_desc->block.bits != 32)
 350          return FALSE;
 351    }
 352
 353    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 354       return util_format_s3tc_enabled;
 355    }
 356
 357    /*
 358     * Everything can be supported by u_format.
 359     */
 360
 361    if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS &&
 362        !format_desc->fetch_rgba_float) {
 363       return FALSE;
 364    }
 365
 366    return TRUE;
 367 }
 368
 369
 370
 371
 372 static void
 373 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 374                            struct pipe_resource *resource,
 375                            unsigned level, unsigned layer,
 376                            void *context_private)
 377 {
 378    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 379    struct sw_winsys *winsys = screen->winsys;
 380    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 381
 382    assert(texture->dt);
 383    if (texture->dt)
 384       winsys->displaytarget_display(winsys, texture->dt, context_private);
 385 }
 386
 387
 388 static void
 389 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 390 {
 391    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 392    struct sw_winsys *winsys = screen->winsys;
 393
 394    if (screen->rast)
 395       lp_rast_destroy(screen->rast);
 396
 397    lp_jit_screen_cleanup(screen);
 398
 399    if(winsys->destroy)
 400       winsys->destroy(winsys);
 401
 402    pipe_mutex_destroy(screen->rast_mutex);
 403
 404    FREE(screen);
 405 }
 406
 407
 408
 409
 410 /**
 411  * Fence reference counting.
 412  */
 413 static void
 414 llvmpipe_fence_reference(struct pipe_screen *screen,
 415                          struct pipe_fence_handle **ptr,
 416                          struct pipe_fence_handle *fence)
 417 {
 418    struct lp_fence **old = (struct lp_fence **) ptr;
 419    struct lp_fence *f = (struct lp_fence *) fence;
 420
 421    lp_fence_reference(old, f);
 422 }
 423
 424
 425 /**
 426  * Has the fence been executed/finished?
 427  */
 428 static boolean
 429 llvmpipe_fence_signalled(struct pipe_screen *screen,
 430                          struct pipe_fence_handle *fence)
 431 {
 432    struct lp_fence *f = (struct lp_fence *) fence;
 433    return lp_fence_signalled(f);
 434 }
 435
 436
 437 /**
 438  * Wait for the fence to finish.
 439  */
 440 static boolean
 441 llvmpipe_fence_finish(struct pipe_screen *screen,
 442                       struct pipe_fence_handle *fence_handle,
 443                       uint64_t timeout)
 444 {
 445    struct lp_fence *f = (struct lp_fence *) fence_handle;
 446
 447    lp_fence_wait(f);
 448    return TRUE;
 449 }
 450
 451 static uint64_t
 452 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 453 {
 454    return os_time_get_nano();
 455 }
 456
 457 /**
 458  * Create a new pipe_screen object
 459  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 460  */
 461 struct pipe_screen *
 462 llvmpipe_create_screen(struct sw_winsys *winsys)
 463 {
 464    struct llvmpipe_screen *screen;
 465
 466 #ifdef PIPE_ARCH_X86
 467    /* require SSE2 due to LLVM PR6960. */
 468    util_cpu_detect();
 469    if (!util_cpu_caps.has_sse2)
 470        return NULL;
 471 #endif
 472
 473 #ifdef DEBUG
 474    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 475 #endif
 476
 477    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 478
 479    screen = CALLOC_STRUCT(llvmpipe_screen);
 480    if (!screen)
 481       return NULL;
 482
 483    screen->winsys = winsys;
 484
 485    screen->base.destroy = llvmpipe_destroy_screen;
 486
 487    screen->base.get_name = llvmpipe_get_name;
 488    screen->base.get_vendor = llvmpipe_get_vendor;
 489    screen->base.get_param = llvmpipe_get_param;
 490    screen->base.get_shader_param = llvmpipe_get_shader_param;
 491    screen->base.get_paramf = llvmpipe_get_paramf;
 492    screen->base.is_format_supported = llvmpipe_is_format_supported;
 493
 494    screen->base.context_create = llvmpipe_create_context;
 495    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 496    screen->base.fence_reference = llvmpipe_fence_reference;
 497    screen->base.fence_signalled = llvmpipe_fence_signalled;
 498    screen->base.fence_finish = llvmpipe_fence_finish;
 499
 500    screen->base.get_timestamp = llvmpipe_get_timestamp;
 501
 502    llvmpipe_init_screen_resource_funcs(&screen->base);
 503
 504    lp_jit_screen_init(screen);
 505
 506    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 507 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 508    screen->num_threads = 0;
 509 #endif
 510    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 511    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 512
 513    screen->rast = lp_rast_create(screen->num_threads);
 514    if (!screen->rast) {
 515       lp_jit_screen_cleanup(screen);
 516       FREE(screen);
 517       return NULL;
 518    }
 519    pipe_mutex_init(screen->rast_mutex);
 520
 521    util_format_s3tc_init();
 522
 523    return &screen->base;
 524 }