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    { "counters", DEBUG_COUNTERS, NULL },
  64    { "scene", DEBUG_SCENE, NULL },
  65    { "fence", DEBUG_FENCE, NULL },
  66    { "mem", DEBUG_MEM, NULL },
  67    { "fs", DEBUG_FS, NULL },
  68    DEBUG_NAMED_VALUE_END
  69 };
  70 #endif
  71
  72 int LP_PERF = 0;
  73 static const struct debug_named_value lp_perf_flags[] = {
  74    { "texmem",         PERF_TEX_MEM, NULL },
  75    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  76    { "no_linear",      PERF_NO_LINEAR, NULL },
  77    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  78    { "no_tex",         PERF_NO_TEX, NULL },
  79    { "no_blend",       PERF_NO_BLEND, NULL },
  80    { "no_depth",       PERF_NO_DEPTH, NULL },
  81    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  82    DEBUG_NAMED_VALUE_END
  83 };
  84
  85
  86 static const char *
  87 llvmpipe_get_vendor(struct pipe_screen *screen)
  88 {
  89    return "VMware, Inc.";
  90 }
  91
  92
  93 static const char *
  94 llvmpipe_get_name(struct pipe_screen *screen)
  95 {
  96    static char buf[100];
  97    util_snprintf(buf, sizeof(buf), "llvmpipe (LLVM %u.%u, %u bits)",
  98                  HAVE_LLVM >> 8, HAVE_LLVM & 0xff,
  99                  lp_native_vector_width );
 100    return buf;
 101 }
 102
 103
 104 static int
 105 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 106 {
 107    switch (param) {
 108    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 109       return 2 * PIPE_MAX_SAMPLERS;  /* VS + FS samplers */
 110    case PIPE_CAP_NPOT_TEXTURES:
 111       return 1;
 112    case PIPE_CAP_TWO_SIDED_STENCIL:
 113       return 1;
 114    case PIPE_CAP_SM3:
 115       return 1;
 116    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 117       return 0;
 118    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 119       return 0;
 120    case PIPE_CAP_ANISOTROPIC_FILTER:
 121       return 0;
 122    case PIPE_CAP_POINT_SPRITE:
 123       return 1;
 124    case PIPE_CAP_MAX_RENDER_TARGETS:
 125       return PIPE_MAX_COLOR_BUFS;
 126    case PIPE_CAP_OCCLUSION_QUERY:
 127       return 1;
 128    case PIPE_CAP_TIMER_QUERY:
 129       return 0;
 130    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 131       return 1;
 132    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 133       return 1;
 134    case PIPE_CAP_TEXTURE_SWIZZLE:
 135       return 1;
 136    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 137       return LP_MAX_TEXTURE_2D_LEVELS;
 138    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 139       return LP_MAX_TEXTURE_3D_LEVELS;
 140    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 141       return LP_MAX_TEXTURE_CUBE_LEVELS;
 142    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 143       return 1;
 144    case PIPE_CAP_INDEP_BLEND_ENABLE:
 145       return 1;
 146    case PIPE_CAP_INDEP_BLEND_FUNC:
 147       return 1;
 148    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 149    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 150       return 1;
 151    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 152    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 153       return 0;
 154    case PIPE_CAP_PRIMITIVE_RESTART:
 155       return 1;
 156    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 157       return 1;
 158    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 159       return 0;
 160    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 161       return 0;
 162    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 163       return 0;
 164    case PIPE_CAP_TGSI_INSTANCEID:
 165    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 166       return 1;
 167    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 168       return 0;
 169    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 170       return 1;
 171    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 172    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 173       return 0;
 174    case PIPE_CAP_SCALED_RESOLVE:
 175       return 0;
 176    /* this is a lie could support arbitrary large offsets */
 177    case PIPE_CAP_MIN_TEXEL_OFFSET:
 178       return -8;
 179    case PIPE_CAP_MAX_TEXEL_OFFSET:
 180       return 7;
 181    case PIPE_CAP_CONDITIONAL_RENDER:
 182       return 1;
 183    case PIPE_CAP_TEXTURE_BARRIER:
 184       return 0;
 185    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 186    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 187    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 188       return 0;
 189    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 190    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 191       return 0;
 192    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 193    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 194       return 1;
 195    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 196       return 120;
 197    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 198       return 0;
 199    case PIPE_CAP_COMPUTE:
 200       return 0;
 201    case PIPE_CAP_USER_VERTEX_BUFFERS:
 202    case PIPE_CAP_USER_INDEX_BUFFERS:
 203    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 204       return 1;
 205    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 206    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 207    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 208       return 0;
 209
 210    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 211       return 16;
 212    case PIPE_CAP_START_INSTANCE:
 213    case PIPE_CAP_QUERY_TIMESTAMP:
 214    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 215    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 216    case PIPE_CAP_CUBE_MAP_ARRAY:
 217       return 0;
 218    }
 219    /* should only get here on unhandled cases */
 220    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 221    return 0;
 222 }
 223
 224 static int
 225 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 226 {
 227    switch(shader)
 228    {
 229    case PIPE_SHADER_FRAGMENT:
 230       switch (param) {
 231       default:
 232          return gallivm_get_shader_param(param);
 233       }
 234    case PIPE_SHADER_VERTEX:
 235    case PIPE_SHADER_GEOMETRY:
 236       switch (param) {
 237       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 238          /* At this time, the draw module and llvmpipe driver only
 239           * support vertex shader texture lookups when LLVM is enabled in
 240           * the draw module.
 241           */
 242          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 243             return PIPE_MAX_SAMPLERS;
 244          else
 245             return 0;
 246       default:
 247          return draw_get_shader_param(shader, param);
 248       }
 249    default:
 250       return 0;
 251    }
 252 }
 253
 254 static float
 255 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 256 {
 257    switch (param) {
 258    case PIPE_CAPF_MAX_LINE_WIDTH:
 259       /* fall-through */
 260    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 261       return 255.0; /* arbitrary */
 262    case PIPE_CAPF_MAX_POINT_WIDTH:
 263       /* fall-through */
 264    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 265       return 255.0; /* arbitrary */
 266    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 267       return 16.0; /* not actually signficant at this time */
 268    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 269       return 16.0; /* arbitrary */
 270    case PIPE_CAPF_GUARD_BAND_LEFT:
 271    case PIPE_CAPF_GUARD_BAND_TOP:
 272    case PIPE_CAPF_GUARD_BAND_RIGHT:
 273    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 274       return 0.0;
 275    }
 276    /* should only get here on unhandled cases */
 277    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 278    return 0.0;
 279 }
 280
 281
 282 /**
 283  * Query format support for creating a texture, drawing surface, etc.
 284  * \param format  the format to test
 285  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 286  */
 287 static boolean
 288 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 289                               enum pipe_format format,
 290                               enum pipe_texture_target target,
 291                               unsigned sample_count,
 292                               unsigned bind)
 293 {
 294    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 295    struct sw_winsys *winsys = screen->winsys;
 296    const struct util_format_description *format_desc;
 297
 298    format_desc = util_format_description(format);
 299    if (!format_desc)
 300       return FALSE;
 301
 302    /* Z16 support is missing, which breaks the blit */
 303    if (format == PIPE_FORMAT_Z16_UNORM)
 304       return FALSE;
 305
 306    assert(target == PIPE_BUFFER ||
 307           target == PIPE_TEXTURE_1D ||
 308           target == PIPE_TEXTURE_2D ||
 309           target == PIPE_TEXTURE_RECT ||
 310           target == PIPE_TEXTURE_3D ||
 311           target == PIPE_TEXTURE_CUBE);
 312
 313    if (sample_count > 1)
 314       return FALSE;
 315
 316    if (bind & PIPE_BIND_RENDER_TARGET) {
 317       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 318          return FALSE;
 319
 320       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 321          return FALSE;
 322       assert(format_desc->block.width == 1);
 323       assert(format_desc->block.height == 1);
 324
 325       if (format_desc->is_mixed)
 326          return FALSE;
 327
 328       if (!format_desc->is_array && !format_desc->is_bitmask)
 329          return FALSE;
 330    }
 331
 332    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 333       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 334          return FALSE;
 335    }
 336
 337    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 338       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 339          return FALSE;
 340
 341       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 342          return FALSE;
 343
 344       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 345       if (format_desc->block.bits != 32)
 346          return FALSE;
 347    }
 348
 349    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 350       return util_format_s3tc_enabled;
 351    }
 352
 353    /*
 354     * Everything can be supported by u_format.
 355     */
 356
 357    if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS &&
 358        !format_desc->fetch_rgba_float) {
 359       return FALSE;
 360    }
 361
 362    return TRUE;
 363 }
 364
 365
 366
 367
 368 static void
 369 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 370                            struct pipe_resource *resource,
 371                            unsigned level, unsigned layer,
 372                            void *context_private)
 373 {
 374    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 375    struct sw_winsys *winsys = screen->winsys;
 376    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 377
 378    assert(texture->dt);
 379    if (texture->dt)
 380       winsys->displaytarget_display(winsys, texture->dt, context_private);
 381 }
 382
 383
 384 static void
 385 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 386 {
 387    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 388    struct sw_winsys *winsys = screen->winsys;
 389
 390    if (screen->rast)
 391       lp_rast_destroy(screen->rast);
 392
 393    lp_jit_screen_cleanup(screen);
 394
 395    if(winsys->destroy)
 396       winsys->destroy(winsys);
 397
 398    pipe_mutex_destroy(screen->rast_mutex);
 399
 400    FREE(screen);
 401 }
 402
 403
 404
 405
 406 /**
 407  * Fence reference counting.
 408  */
 409 static void
 410 llvmpipe_fence_reference(struct pipe_screen *screen,
 411                          struct pipe_fence_handle **ptr,
 412                          struct pipe_fence_handle *fence)
 413 {
 414    struct lp_fence **old = (struct lp_fence **) ptr;
 415    struct lp_fence *f = (struct lp_fence *) fence;
 416
 417    lp_fence_reference(old, f);
 418 }
 419
 420
 421 /**
 422  * Has the fence been executed/finished?
 423  */
 424 static boolean
 425 llvmpipe_fence_signalled(struct pipe_screen *screen,
 426                          struct pipe_fence_handle *fence)
 427 {
 428    struct lp_fence *f = (struct lp_fence *) fence;
 429    return lp_fence_signalled(f);
 430 }
 431
 432
 433 /**
 434  * Wait for the fence to finish.
 435  */
 436 static boolean
 437 llvmpipe_fence_finish(struct pipe_screen *screen,
 438                       struct pipe_fence_handle *fence_handle,
 439                       uint64_t timeout)
 440 {
 441    struct lp_fence *f = (struct lp_fence *) fence_handle;
 442
 443    lp_fence_wait(f);
 444    return TRUE;
 445 }
 446
 447
 448
 449 /**
 450  * Create a new pipe_screen object
 451  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 452  */
 453 struct pipe_screen *
 454 llvmpipe_create_screen(struct sw_winsys *winsys)
 455 {
 456    struct llvmpipe_screen *screen;
 457
 458 #ifdef PIPE_ARCH_X86
 459    /* require SSE2 due to LLVM PR6960. */
 460    util_cpu_detect();
 461    if (!util_cpu_caps.has_sse2)
 462        return NULL;
 463 #endif
 464
 465 #ifdef DEBUG
 466    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 467 #endif
 468
 469    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 470
 471    screen = CALLOC_STRUCT(llvmpipe_screen);
 472    if (!screen)
 473       return NULL;
 474
 475    screen->winsys = winsys;
 476
 477    screen->base.destroy = llvmpipe_destroy_screen;
 478
 479    screen->base.get_name = llvmpipe_get_name;
 480    screen->base.get_vendor = llvmpipe_get_vendor;
 481    screen->base.get_param = llvmpipe_get_param;
 482    screen->base.get_shader_param = llvmpipe_get_shader_param;
 483    screen->base.get_paramf = llvmpipe_get_paramf;
 484    screen->base.is_format_supported = llvmpipe_is_format_supported;
 485
 486    screen->base.context_create = llvmpipe_create_context;
 487    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 488    screen->base.fence_reference = llvmpipe_fence_reference;
 489    screen->base.fence_signalled = llvmpipe_fence_signalled;
 490    screen->base.fence_finish = llvmpipe_fence_finish;
 491
 492    llvmpipe_init_screen_resource_funcs(&screen->base);
 493
 494    lp_jit_screen_init(screen);
 495
 496    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 497 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 498    screen->num_threads = 0;
 499 #endif
 500    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 501    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 502
 503    screen->rast = lp_rast_create(screen->num_threads);
 504    if (!screen->rast) {
 505       lp_jit_screen_cleanup(screen);
 506       FREE(screen);
 507       return NULL;
 508    }
 509    pipe_mutex_init(screen->rast_mutex);
 510
 511    util_format_s3tc_init();
 512
 513    return &screen->base;
 514 }