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 1;
 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       return 1;
 207    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 208       return 0;
 209    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 210    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 211    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 212       return 0;
 213
 214    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 215       return 16;
 216    case PIPE_CAP_START_INSTANCE:
 217    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 218    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 219    case PIPE_CAP_CUBE_MAP_ARRAY:
 220    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 221       return 0;
 222    }
 223    /* should only get here on unhandled cases */
 224    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 225    return 0;
 226 }
 227
 228 static int
 229 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 230 {
 231    switch(shader)
 232    {
 233    case PIPE_SHADER_FRAGMENT:
 234       switch (param) {
 235       default:
 236          return gallivm_get_shader_param(param);
 237       }
 238    case PIPE_SHADER_VERTEX:
 239    case PIPE_SHADER_GEOMETRY:
 240       switch (param) {
 241       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 242          /* At this time, the draw module and llvmpipe driver only
 243           * support vertex shader texture lookups when LLVM is enabled in
 244           * the draw module.
 245           */
 246          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 247             return PIPE_MAX_SAMPLERS;
 248          else
 249             return 0;
 250       default:
 251          return draw_get_shader_param(shader, param);
 252       }
 253    default:
 254       return 0;
 255    }
 256 }
 257
 258 static float
 259 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 260 {
 261    switch (param) {
 262    case PIPE_CAPF_MAX_LINE_WIDTH:
 263       /* fall-through */
 264    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 265       return 255.0; /* arbitrary */
 266    case PIPE_CAPF_MAX_POINT_WIDTH:
 267       /* fall-through */
 268    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 269       return 255.0; /* arbitrary */
 270    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 271       return 16.0; /* not actually signficant at this time */
 272    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 273       return 16.0; /* arbitrary */
 274    case PIPE_CAPF_GUARD_BAND_LEFT:
 275    case PIPE_CAPF_GUARD_BAND_TOP:
 276    case PIPE_CAPF_GUARD_BAND_RIGHT:
 277    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 278       return 0.0;
 279    }
 280    /* should only get here on unhandled cases */
 281    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 282    return 0.0;
 283 }
 284
 285
 286 /**
 287  * Query format support for creating a texture, drawing surface, etc.
 288  * \param format  the format to test
 289  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 290  */
 291 static boolean
 292 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 293                               enum pipe_format format,
 294                               enum pipe_texture_target target,
 295                               unsigned sample_count,
 296                               unsigned bind)
 297 {
 298    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 299    struct sw_winsys *winsys = screen->winsys;
 300    const struct util_format_description *format_desc;
 301
 302    format_desc = util_format_description(format);
 303    if (!format_desc)
 304       return FALSE;
 305
 306    /* Z16 support is missing, which breaks the blit */
 307    if (format == PIPE_FORMAT_Z16_UNORM)
 308       return FALSE;
 309
 310    assert(target == PIPE_BUFFER ||
 311           target == PIPE_TEXTURE_1D ||
 312           target == PIPE_TEXTURE_1D_ARRAY ||
 313           target == PIPE_TEXTURE_2D ||
 314           target == PIPE_TEXTURE_2D_ARRAY ||
 315           target == PIPE_TEXTURE_RECT ||
 316           target == PIPE_TEXTURE_3D ||
 317           target == PIPE_TEXTURE_CUBE);
 318
 319    if (sample_count > 1)
 320       return FALSE;
 321
 322    if (bind & PIPE_BIND_RENDER_TARGET) {
 323       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 324          return FALSE;
 325
 326       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 327          return FALSE;
 328       assert(format_desc->block.width == 1);
 329       assert(format_desc->block.height == 1);
 330
 331       if (format_desc->is_mixed)
 332          return FALSE;
 333
 334       if (!format_desc->is_array && !format_desc->is_bitmask)
 335          return FALSE;
 336    }
 337
 338    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 339       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 340          return FALSE;
 341    }
 342
 343    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 344       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 345          return FALSE;
 346
 347       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 348          return FALSE;
 349
 350       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 351       if (format_desc->block.bits != 32)
 352          return FALSE;
 353    }
 354
 355    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 356       return util_format_s3tc_enabled;
 357    }
 358
 359    /*
 360     * Everything can be supported by u_format.
 361     */
 362
 363    if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS &&
 364        !format_desc->fetch_rgba_float) {
 365       return FALSE;
 366    }
 367
 368    return TRUE;
 369 }
 370
 371
 372
 373
 374 static void
 375 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 376                            struct pipe_resource *resource,
 377                            unsigned level, unsigned layer,
 378                            void *context_private)
 379 {
 380    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 381    struct sw_winsys *winsys = screen->winsys;
 382    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 383
 384    assert(texture->dt);
 385    if (texture->dt)
 386       winsys->displaytarget_display(winsys, texture->dt, context_private);
 387 }
 388
 389
 390 static void
 391 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 392 {
 393    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 394    struct sw_winsys *winsys = screen->winsys;
 395
 396    if (screen->rast)
 397       lp_rast_destroy(screen->rast);
 398
 399    lp_jit_screen_cleanup(screen);
 400
 401    if(winsys->destroy)
 402       winsys->destroy(winsys);
 403
 404    pipe_mutex_destroy(screen->rast_mutex);
 405
 406    FREE(screen);
 407 }
 408
 409
 410
 411
 412 /**
 413  * Fence reference counting.
 414  */
 415 static void
 416 llvmpipe_fence_reference(struct pipe_screen *screen,
 417                          struct pipe_fence_handle **ptr,
 418                          struct pipe_fence_handle *fence)
 419 {
 420    struct lp_fence **old = (struct lp_fence **) ptr;
 421    struct lp_fence *f = (struct lp_fence *) fence;
 422
 423    lp_fence_reference(old, f);
 424 }
 425
 426
 427 /**
 428  * Has the fence been executed/finished?
 429  */
 430 static boolean
 431 llvmpipe_fence_signalled(struct pipe_screen *screen,
 432                          struct pipe_fence_handle *fence)
 433 {
 434    struct lp_fence *f = (struct lp_fence *) fence;
 435    return lp_fence_signalled(f);
 436 }
 437
 438
 439 /**
 440  * Wait for the fence to finish.
 441  */
 442 static boolean
 443 llvmpipe_fence_finish(struct pipe_screen *screen,
 444                       struct pipe_fence_handle *fence_handle,
 445                       uint64_t timeout)
 446 {
 447    struct lp_fence *f = (struct lp_fence *) fence_handle;
 448
 449    lp_fence_wait(f);
 450    return TRUE;
 451 }
 452
 453 static uint64_t
 454 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 455 {
 456    return os_time_get_nano();
 457 }
 458
 459 /**
 460  * Create a new pipe_screen object
 461  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 462  */
 463 struct pipe_screen *
 464 llvmpipe_create_screen(struct sw_winsys *winsys)
 465 {
 466    struct llvmpipe_screen *screen;
 467
 468 #ifdef PIPE_ARCH_X86
 469    /* require SSE2 due to LLVM PR6960. */
 470    util_cpu_detect();
 471    if (!util_cpu_caps.has_sse2)
 472        return NULL;
 473 #endif
 474
 475 #ifdef DEBUG
 476    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 477 #endif
 478
 479    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 480
 481    screen = CALLOC_STRUCT(llvmpipe_screen);
 482    if (!screen)
 483       return NULL;
 484
 485    screen->winsys = winsys;
 486
 487    screen->base.destroy = llvmpipe_destroy_screen;
 488
 489    screen->base.get_name = llvmpipe_get_name;
 490    screen->base.get_vendor = llvmpipe_get_vendor;
 491    screen->base.get_param = llvmpipe_get_param;
 492    screen->base.get_shader_param = llvmpipe_get_shader_param;
 493    screen->base.get_paramf = llvmpipe_get_paramf;
 494    screen->base.is_format_supported = llvmpipe_is_format_supported;
 495
 496    screen->base.context_create = llvmpipe_create_context;
 497    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 498    screen->base.fence_reference = llvmpipe_fence_reference;
 499    screen->base.fence_signalled = llvmpipe_fence_signalled;
 500    screen->base.fence_finish = llvmpipe_fence_finish;
 501
 502    screen->base.get_timestamp = llvmpipe_get_timestamp;
 503
 504    llvmpipe_init_screen_resource_funcs(&screen->base);
 505
 506    lp_jit_screen_init(screen);
 507
 508    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 509 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 510    screen->num_threads = 0;
 511 #endif
 512    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 513    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 514
 515    screen->rast = lp_rast_create(screen->num_threads);
 516    if (!screen->rast) {
 517       lp_jit_screen_cleanup(screen);
 518       FREE(screen);
 519       return NULL;
 520    }
 521    pipe_mutex_init(screen->rast_mutex);
 522
 523    util_format_s3tc_init();
 524
 525    return &screen->base;
 526 }