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 "lp_texture.h"
  41 #include "lp_fence.h"
  42 #include "lp_jit.h"
  43 #include "lp_screen.h"
  44 #include "lp_context.h"
  45 #include "lp_debug.h"
  46 #include "lp_public.h"
  47 #include "lp_limits.h"
  48 #include "lp_rast.h"
  49
  50 #include "state_tracker/sw_winsys.h"
  51
  52 #ifdef DEBUG
  53 int LP_DEBUG = 0;
  54
  55 static const struct debug_named_value lp_debug_flags[] = {
  56    { "pipe",   DEBUG_PIPE, NULL },
  57    { "tgsi",   DEBUG_TGSI, NULL },
  58    { "tex",    DEBUG_TEX, NULL },
  59    { "setup",  DEBUG_SETUP, NULL },
  60    { "rast",   DEBUG_RAST, NULL },
  61    { "query",  DEBUG_QUERY, NULL },
  62    { "screen", DEBUG_SCREEN, NULL },
  63    { "show_tiles",    DEBUG_SHOW_TILES, NULL },
  64    { "show_subtiles", DEBUG_SHOW_SUBTILES, NULL },
  65    { "counters", DEBUG_COUNTERS, NULL },
  66    { "scene", DEBUG_SCENE, NULL },
  67    { "fence", DEBUG_FENCE, NULL },
  68    { "mem", DEBUG_MEM, NULL },
  69    { "fs", DEBUG_FS, NULL },
  70    DEBUG_NAMED_VALUE_END
  71 };
  72 #endif
  73
  74 int LP_PERF = 0;
  75 static const struct debug_named_value lp_perf_flags[] = {
  76    { "texmem",         PERF_TEX_MEM, NULL },
  77    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  78    { "no_linear",      PERF_NO_LINEAR, NULL },
  79    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  80    { "no_tex",         PERF_NO_TEX, NULL },
  81    { "no_blend",       PERF_NO_BLEND, NULL },
  82    { "no_depth",       PERF_NO_DEPTH, NULL },
  83    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  84    DEBUG_NAMED_VALUE_END
  85 };
  86
  87
  88 static const char *
  89 llvmpipe_get_vendor(struct pipe_screen *screen)
  90 {
  91    return "VMware, Inc.";
  92 }
  93
  94
  95 static const char *
  96 llvmpipe_get_name(struct pipe_screen *screen)
  97 {
  98    static char buf[100];
  99    util_snprintf(buf, sizeof(buf), "llvmpipe (LLVM %u.%u, %u bits)",
 100                  HAVE_LLVM >> 8, HAVE_LLVM & 0xff,
 101                  lp_native_vector_width );
 102    return buf;
 103 }
 104
 105
 106 static int
 107 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 108 {
 109    switch (param) {
 110    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 111       return 2 * PIPE_MAX_SAMPLERS;  /* VS + FS samplers */
 112    case PIPE_CAP_NPOT_TEXTURES:
 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 0;
 120    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 121       return 0;
 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_TIMER_QUERY:
 131       return 0;
 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_BLEND_EQUATION_SEPARATE:
 145       return 1;
 146    case PIPE_CAP_INDEP_BLEND_ENABLE:
 147       return 1;
 148    case PIPE_CAP_INDEP_BLEND_FUNC:
 149       return 1;
 150    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 151    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 152       return 1;
 153    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 154    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 155       return 0;
 156    case PIPE_CAP_PRIMITIVE_RESTART:
 157       return 1;
 158    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 159       return 1;
 160    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 161       return 0;
 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    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 190       return 0;
 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 0;
 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    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 206       return 1;
 207    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 208    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 209    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 210       return 0;
 211
 212    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 213       return 16;
 214    case PIPE_CAP_START_INSTANCE:
 215    case PIPE_CAP_QUERY_TIMESTAMP:
 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_2D ||
 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 (format_desc->format == PIPE_FORMAT_R11G11B10_FLOAT ||
 319        format_desc->format == PIPE_FORMAT_R9G9B9E5_FLOAT)
 320      return TRUE;
 321
 322    if (bind & PIPE_BIND_RENDER_TARGET) {
 323       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS ||
 324           format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB)
 325          return FALSE;
 326
 327       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 328          return FALSE;
 329
 330       if (format_desc->block.width != 1 ||
 331           format_desc->block.height != 1)
 332          return FALSE;
 333    }
 334
 335    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 336       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 337          return FALSE;
 338    }
 339
 340    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 341       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 342          return FALSE;
 343
 344       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 345          return FALSE;
 346
 347       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 348       if (format_desc->block.bits != 32)
 349          return FALSE;
 350    }
 351
 352    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 353       return util_format_s3tc_enabled;
 354    }
 355
 356    /*
 357     * Everything can be supported by u_format.
 358     */
 359
 360    if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS &&
 361        !format_desc->fetch_rgba_float) {
 362       return FALSE;
 363    }
 364
 365    return TRUE;
 366 }
 367
 368
 369
 370
 371 static void
 372 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 373                            struct pipe_resource *resource,
 374                            unsigned level, unsigned layer,
 375                            void *context_private)
 376 {
 377    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 378    struct sw_winsys *winsys = screen->winsys;
 379    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 380
 381    assert(texture->dt);
 382    if (texture->dt)
 383       winsys->displaytarget_display(winsys, texture->dt, context_private);
 384 }
 385
 386
 387 static void
 388 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 389 {
 390    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 391    struct sw_winsys *winsys = screen->winsys;
 392
 393    if (screen->rast)
 394       lp_rast_destroy(screen->rast);
 395
 396    lp_jit_screen_cleanup(screen);
 397
 398    if(winsys->destroy)
 399       winsys->destroy(winsys);
 400
 401    pipe_mutex_destroy(screen->rast_mutex);
 402
 403    FREE(screen);
 404 }
 405
 406
 407
 408
 409 /**
 410  * Fence reference counting.
 411  */
 412 static void
 413 llvmpipe_fence_reference(struct pipe_screen *screen,
 414                          struct pipe_fence_handle **ptr,
 415                          struct pipe_fence_handle *fence)
 416 {
 417    struct lp_fence **old = (struct lp_fence **) ptr;
 418    struct lp_fence *f = (struct lp_fence *) fence;
 419
 420    lp_fence_reference(old, f);
 421 }
 422
 423
 424 /**
 425  * Has the fence been executed/finished?
 426  */
 427 static boolean
 428 llvmpipe_fence_signalled(struct pipe_screen *screen,
 429                          struct pipe_fence_handle *fence)
 430 {
 431    struct lp_fence *f = (struct lp_fence *) fence;
 432    return lp_fence_signalled(f);
 433 }
 434
 435
 436 /**
 437  * Wait for the fence to finish.
 438  */
 439 static boolean
 440 llvmpipe_fence_finish(struct pipe_screen *screen,
 441                       struct pipe_fence_handle *fence_handle,
 442                       uint64_t timeout)
 443 {
 444    struct lp_fence *f = (struct lp_fence *) fence_handle;
 445
 446    lp_fence_wait(f);
 447    return TRUE;
 448 }
 449
 450
 451
 452 /**
 453  * Create a new pipe_screen object
 454  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 455  */
 456 struct pipe_screen *
 457 llvmpipe_create_screen(struct sw_winsys *winsys)
 458 {
 459    struct llvmpipe_screen *screen;
 460
 461 #ifdef PIPE_ARCH_X86
 462    /* require SSE2 due to LLVM PR6960. */
 463    util_cpu_detect();
 464    if (!util_cpu_caps.has_sse2)
 465        return NULL;
 466 #endif
 467
 468 #ifdef DEBUG
 469    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 470 #endif
 471
 472    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 473
 474    screen = CALLOC_STRUCT(llvmpipe_screen);
 475    if (!screen)
 476       return NULL;
 477
 478    screen->winsys = winsys;
 479
 480    screen->base.destroy = llvmpipe_destroy_screen;
 481
 482    screen->base.get_name = llvmpipe_get_name;
 483    screen->base.get_vendor = llvmpipe_get_vendor;
 484    screen->base.get_param = llvmpipe_get_param;
 485    screen->base.get_shader_param = llvmpipe_get_shader_param;
 486    screen->base.get_paramf = llvmpipe_get_paramf;
 487    screen->base.is_format_supported = llvmpipe_is_format_supported;
 488
 489    screen->base.context_create = llvmpipe_create_context;
 490    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 491    screen->base.fence_reference = llvmpipe_fence_reference;
 492    screen->base.fence_signalled = llvmpipe_fence_signalled;
 493    screen->base.fence_finish = llvmpipe_fence_finish;
 494
 495    llvmpipe_init_screen_resource_funcs(&screen->base);
 496
 497    lp_jit_screen_init(screen);
 498
 499    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 500 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 501    screen->num_threads = 0;
 502 #endif
 503    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 504    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 505
 506    screen->rast = lp_rast_create(screen->num_threads);
 507    if (!screen->rast) {
 508       lp_jit_screen_cleanup(screen);
 509       FREE(screen);
 510       return NULL;
 511    }
 512    pipe_mutex_init(screen->rast_mutex);
 513
 514    util_format_s3tc_init();
 515
 516    return &screen->base;
 517 }