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
  39 #include "lp_texture.h"
  40 #include "lp_fence.h"
  41 #include "lp_jit.h"
  42 #include "lp_screen.h"
  43 #include "lp_context.h"
  44 #include "lp_debug.h"
  45 #include "lp_public.h"
  46 #include "lp_limits.h"
  47 #include "lp_rast.h"
  48
  49 #include "state_tracker/sw_winsys.h"
  50
  51 #ifdef DEBUG
  52 int LP_DEBUG = 0;
  53
  54 static const struct debug_named_value lp_debug_flags[] = {
  55    { "pipe",   DEBUG_PIPE, NULL },
  56    { "tgsi",   DEBUG_TGSI, NULL },
  57    { "tex",    DEBUG_TEX, NULL },
  58    { "setup",  DEBUG_SETUP, NULL },
  59    { "rast",   DEBUG_RAST, NULL },
  60    { "query",  DEBUG_QUERY, NULL },
  61    { "screen", DEBUG_SCREEN, NULL },
  62    { "show_tiles",    DEBUG_SHOW_TILES, NULL },
  63    { "show_subtiles", DEBUG_SHOW_SUBTILES, 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 0x%x)", HAVE_LLVM);
  99    return buf;
 100 }
 101
 102
 103 static int
 104 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 105 {
 106    switch (param) {
 107    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 108       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
 109    case PIPE_CAP_NPOT_TEXTURES:
 110       return 1;
 111    case PIPE_CAP_TWO_SIDED_STENCIL:
 112       return 1;
 113    case PIPE_CAP_SM3:
 114       return 1;
 115    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 116       return 0;
 117    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 118       return 0;
 119    case PIPE_CAP_ANISOTROPIC_FILTER:
 120       return 0;
 121    case PIPE_CAP_POINT_SPRITE:
 122       return 1;
 123    case PIPE_CAP_MAX_RENDER_TARGETS:
 124       return PIPE_MAX_COLOR_BUFS;
 125    case PIPE_CAP_OCCLUSION_QUERY:
 126       return 1;
 127    case PIPE_CAP_TIMER_QUERY:
 128       return 0;
 129    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 130       return 1;
 131    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 132       return 1;
 133    case PIPE_CAP_TEXTURE_SWIZZLE:
 134       return 1;
 135    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 136       return LP_MAX_TEXTURE_2D_LEVELS;
 137    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 138       return LP_MAX_TEXTURE_3D_LEVELS;
 139    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 140       return LP_MAX_TEXTURE_2D_LEVELS;
 141    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 142       return 1;
 143    case PIPE_CAP_INDEP_BLEND_ENABLE:
 144       return 1;
 145    case PIPE_CAP_INDEP_BLEND_FUNC:
 146       return 1;
 147    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 148    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 149       return 1;
 150    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 151    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 152       return 0;
 153    case PIPE_CAP_PRIMITIVE_RESTART:
 154       return 1;
 155    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 156       return 1;
 157    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 158       return 0;
 159    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 160       return 0;
 161    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 162       return 0;
 163    case PIPE_CAP_TGSI_INSTANCEID:
 164    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 165       return 1;
 166    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 167       return 0;
 168    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 169       return 1;
 170    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 171    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 172       return 0;
 173    case PIPE_CAP_SCALED_RESOLVE:
 174       return 0;
 175    case PIPE_CAP_MIN_TEXEL_OFFSET:
 176    case PIPE_CAP_MAX_TEXEL_OFFSET:
 177       return 0;
 178    case PIPE_CAP_CONDITIONAL_RENDER:
 179       return 1;
 180    case PIPE_CAP_TEXTURE_BARRIER:
 181       return 0;
 182    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 183    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 184    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 185       return 0;
 186    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 187    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 188       return 0;
 189    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 190    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 191       return 0;
 192    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 193       return 120;
 194    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 195       return 0;
 196    case PIPE_CAP_COMPUTE:
 197       return 0;
 198    case PIPE_CAP_USER_VERTEX_BUFFERS:
 199    case PIPE_CAP_USER_INDEX_BUFFERS:
 200    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 201       return 1;
 202    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 203    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 204    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 205       return 0;
 206
 207    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 208       return 16;
 209    case PIPE_CAP_START_INSTANCE:
 210    case PIPE_CAP_QUERY_TIMESTAMP:
 211       return 0;
 212    }
 213    /* should only get here on unhandled cases */
 214    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 215    return 0;
 216 }
 217
 218 static int
 219 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 220 {
 221    switch(shader)
 222    {
 223    case PIPE_SHADER_FRAGMENT:
 224       switch (param) {
 225       default:
 226          return gallivm_get_shader_param(param);
 227       }
 228    case PIPE_SHADER_VERTEX:
 229    case PIPE_SHADER_GEOMETRY:
 230       switch (param) {
 231       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 232          /* At this time, the draw module and llvmpipe driver only
 233           * support vertex shader texture lookups when LLVM is enabled in
 234           * the draw module.
 235           */
 236          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 237             return PIPE_MAX_VERTEX_SAMPLERS;
 238          else
 239             return 0;
 240       default:
 241          return draw_get_shader_param(shader, param);
 242       }
 243    default:
 244       return 0;
 245    }
 246 }
 247
 248 static float
 249 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 250 {
 251    switch (param) {
 252    case PIPE_CAPF_MAX_LINE_WIDTH:
 253       /* fall-through */
 254    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 255       return 255.0; /* arbitrary */
 256    case PIPE_CAPF_MAX_POINT_WIDTH:
 257       /* fall-through */
 258    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 259       return 255.0; /* arbitrary */
 260    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 261       return 16.0; /* not actually signficant at this time */
 262    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 263       return 16.0; /* arbitrary */
 264    case PIPE_CAPF_GUARD_BAND_LEFT:
 265    case PIPE_CAPF_GUARD_BAND_TOP:
 266    case PIPE_CAPF_GUARD_BAND_RIGHT:
 267    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 268       return 0.0;
 269    }
 270    /* should only get here on unhandled cases */
 271    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 272    return 0.0;
 273 }
 274
 275
 276 /**
 277  * Query format support for creating a texture, drawing surface, etc.
 278  * \param format  the format to test
 279  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 280  */
 281 static boolean
 282 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 283                               enum pipe_format format,
 284                               enum pipe_texture_target target,
 285                               unsigned sample_count,
 286                               unsigned bind)
 287 {
 288    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 289    struct sw_winsys *winsys = screen->winsys;
 290    const struct util_format_description *format_desc;
 291
 292    format_desc = util_format_description(format);
 293    if (!format_desc)
 294       return FALSE;
 295
 296    assert(target == PIPE_BUFFER ||
 297           target == PIPE_TEXTURE_1D ||
 298           target == PIPE_TEXTURE_2D ||
 299           target == PIPE_TEXTURE_RECT ||
 300           target == PIPE_TEXTURE_3D ||
 301           target == PIPE_TEXTURE_CUBE);
 302
 303    if (sample_count > 1)
 304       return FALSE;
 305
 306    if (format_desc->format == PIPE_FORMAT_R11G11B10_FLOAT ||
 307        format_desc->format == PIPE_FORMAT_R9G9B9E5_FLOAT)
 308      return TRUE;
 309
 310    if (bind & PIPE_BIND_RENDER_TARGET) {
 311       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS ||
 312           format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB)
 313          return FALSE;
 314
 315       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 316          return FALSE;
 317
 318       if (format_desc->block.width != 1 ||
 319           format_desc->block.height != 1)
 320          return FALSE;
 321    }
 322
 323    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 324       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 325          return FALSE;
 326    }
 327
 328    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 329       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 330          return FALSE;
 331
 332       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 333          return FALSE;
 334
 335       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 336       if (format_desc->block.bits != 32)
 337          return FALSE;
 338    }
 339
 340    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 341       return util_format_s3tc_enabled;
 342    }
 343
 344    /*
 345     * Everything can be supported by u_format.
 346     */
 347
 348    if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS &&
 349        !format_desc->fetch_rgba_float) {
 350       return FALSE;
 351    }
 352
 353    return TRUE;
 354 }
 355
 356
 357
 358
 359 static void
 360 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 361                            struct pipe_resource *resource,
 362                            unsigned level, unsigned layer,
 363                            void *context_private)
 364 {
 365    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 366    struct sw_winsys *winsys = screen->winsys;
 367    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 368
 369    assert(texture->dt);
 370    if (texture->dt)
 371       winsys->displaytarget_display(winsys, texture->dt, context_private);
 372 }
 373
 374
 375 static void
 376 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 377 {
 378    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 379    struct sw_winsys *winsys = screen->winsys;
 380
 381    if (screen->rast)
 382       lp_rast_destroy(screen->rast);
 383
 384    lp_jit_screen_cleanup(screen);
 385
 386    if(winsys->destroy)
 387       winsys->destroy(winsys);
 388
 389    pipe_mutex_destroy(screen->rast_mutex);
 390
 391    FREE(screen);
 392 }
 393
 394
 395
 396
 397 /**
 398  * Fence reference counting.
 399  */
 400 static void
 401 llvmpipe_fence_reference(struct pipe_screen *screen,
 402                          struct pipe_fence_handle **ptr,
 403                          struct pipe_fence_handle *fence)
 404 {
 405    struct lp_fence **old = (struct lp_fence **) ptr;
 406    struct lp_fence *f = (struct lp_fence *) fence;
 407
 408    lp_fence_reference(old, f);
 409 }
 410
 411
 412 /**
 413  * Has the fence been executed/finished?
 414  */
 415 static boolean
 416 llvmpipe_fence_signalled(struct pipe_screen *screen,
 417                          struct pipe_fence_handle *fence)
 418 {
 419    struct lp_fence *f = (struct lp_fence *) fence;
 420    return lp_fence_signalled(f);
 421 }
 422
 423
 424 /**
 425  * Wait for the fence to finish.
 426  */
 427 static boolean
 428 llvmpipe_fence_finish(struct pipe_screen *screen,
 429                       struct pipe_fence_handle *fence_handle,
 430                       uint64_t timeout)
 431 {
 432    struct lp_fence *f = (struct lp_fence *) fence_handle;
 433
 434    lp_fence_wait(f);
 435    return TRUE;
 436 }
 437
 438
 439
 440 /**
 441  * Create a new pipe_screen object
 442  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 443  */
 444 struct pipe_screen *
 445 llvmpipe_create_screen(struct sw_winsys *winsys)
 446 {
 447    struct llvmpipe_screen *screen;
 448
 449 #ifdef PIPE_ARCH_X86
 450    /* require SSE2 due to LLVM PR6960. */
 451    util_cpu_detect();
 452    if (!util_cpu_caps.has_sse2)
 453        return NULL;
 454 #endif
 455
 456 #ifdef DEBUG
 457    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 458 #endif
 459
 460    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 461
 462    screen = CALLOC_STRUCT(llvmpipe_screen);
 463    if (!screen)
 464       return NULL;
 465
 466    screen->winsys = winsys;
 467
 468    screen->base.destroy = llvmpipe_destroy_screen;
 469
 470    screen->base.get_name = llvmpipe_get_name;
 471    screen->base.get_vendor = llvmpipe_get_vendor;
 472    screen->base.get_param = llvmpipe_get_param;
 473    screen->base.get_shader_param = llvmpipe_get_shader_param;
 474    screen->base.get_paramf = llvmpipe_get_paramf;
 475    screen->base.is_format_supported = llvmpipe_is_format_supported;
 476
 477    screen->base.context_create = llvmpipe_create_context;
 478    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 479    screen->base.fence_reference = llvmpipe_fence_reference;
 480    screen->base.fence_signalled = llvmpipe_fence_signalled;
 481    screen->base.fence_finish = llvmpipe_fence_finish;
 482
 483    llvmpipe_init_screen_resource_funcs(&screen->base);
 484
 485    lp_jit_screen_init(screen);
 486
 487    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 488 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 489    screen->num_threads = 0;
 490 #endif
 491    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 492    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 493
 494    screen->rast = lp_rast_create(screen->num_threads);
 495    if (!screen->rast) {
 496       lp_jit_screen_cleanup(screen);
 497       FREE(screen);
 498       return NULL;
 499    }
 500    pipe_mutex_init(screen->rast_mutex);
 501
 502    util_format_s3tc_init();
 503
 504    return &screen->base;
 505 }