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_ANISOTROPIC_FILTER:
 116       return 0;
 117    case PIPE_CAP_POINT_SPRITE:
 118       return 1;
 119    case PIPE_CAP_MAX_RENDER_TARGETS:
 120       return PIPE_MAX_COLOR_BUFS;
 121    case PIPE_CAP_OCCLUSION_QUERY:
 122       return 1;
 123    case PIPE_CAP_TIMER_QUERY:
 124       return 0;
 125    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 126       return 1;
 127    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 128       return 1;
 129    case PIPE_CAP_TEXTURE_SWIZZLE:
 130       return 1;
 131    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 132       return LP_MAX_TEXTURE_2D_LEVELS;
 133    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 134       return LP_MAX_TEXTURE_3D_LEVELS;
 135    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 136       return LP_MAX_TEXTURE_2D_LEVELS;
 137    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 138       return 1;
 139    case PIPE_CAP_INDEP_BLEND_ENABLE:
 140       return 1;
 141    case PIPE_CAP_INDEP_BLEND_FUNC:
 142       return 1;
 143    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 144    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 145       return 1;
 146    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 147    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 148       return 0;
 149    case PIPE_CAP_PRIMITIVE_RESTART:
 150       return 1;
 151    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 152       return 1;
 153    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 154       return 0;
 155    case PIPE_CAP_TGSI_INSTANCEID:
 156    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 157    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 158    case PIPE_CAP_CONDITIONAL_RENDER:
 159       return 1;
 160    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 161       return 0;
 162    case PIPE_CAP_USER_VERTEX_BUFFERS:
 163       return 1;
 164    default:
 165       return 0;
 166    }
 167 }
 168
 169 static int
 170 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 171 {
 172    switch(shader)
 173    {
 174    case PIPE_SHADER_FRAGMENT:
 175       switch (param) {
 176       case PIPE_SHADER_CAP_INTEGERS:
 177          return 0;
 178       default:
 179          return tgsi_exec_get_shader_param(param);
 180       }
 181    case PIPE_SHADER_VERTEX:
 182    case PIPE_SHADER_GEOMETRY:
 183       switch (param) {
 184       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 185          /* At this time, the draw module and llvmpipe driver only
 186           * support vertex shader texture lookups when LLVM is enabled in
 187           * the draw module.
 188           */
 189          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 190             return PIPE_MAX_VERTEX_SAMPLERS;
 191          else
 192             return 0;
 193       case PIPE_SHADER_CAP_INTEGERS:
 194           return 0;
 195       default:
 196          return draw_get_shader_param(shader, param);
 197       }
 198    default:
 199       return 0;
 200    }
 201 }
 202
 203 static float
 204 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 205 {
 206    switch (param) {
 207    case PIPE_CAPF_MAX_LINE_WIDTH:
 208       /* fall-through */
 209    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 210       return 255.0; /* arbitrary */
 211    case PIPE_CAPF_MAX_POINT_WIDTH:
 212       /* fall-through */
 213    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 214       return 255.0; /* arbitrary */
 215    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 216       return 16.0; /* not actually signficant at this time */
 217    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 218       return 16.0; /* arbitrary */
 219    case PIPE_CAPF_GUARD_BAND_LEFT:
 220    case PIPE_CAPF_GUARD_BAND_TOP:
 221    case PIPE_CAPF_GUARD_BAND_RIGHT:
 222    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 223       return 0.0;
 224    default:
 225       assert(0);
 226       return 0;
 227    }
 228 }
 229
 230
 231 /**
 232  * Query format support for creating a texture, drawing surface, etc.
 233  * \param format  the format to test
 234  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 235  */
 236 static boolean
 237 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 238                               enum pipe_format format,
 239                               enum pipe_texture_target target,
 240                               unsigned sample_count,
 241                               unsigned bind)
 242 {
 243    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 244    struct sw_winsys *winsys = screen->winsys;
 245    const struct util_format_description *format_desc;
 246
 247    format_desc = util_format_description(format);
 248    if (!format_desc)
 249       return FALSE;
 250
 251    assert(target == PIPE_BUFFER ||
 252           target == PIPE_TEXTURE_1D ||
 253           target == PIPE_TEXTURE_2D ||
 254           target == PIPE_TEXTURE_RECT ||
 255           target == PIPE_TEXTURE_3D ||
 256           target == PIPE_TEXTURE_CUBE);
 257
 258    if (sample_count > 1)
 259       return FALSE;
 260
 261    if (format_desc->format == PIPE_FORMAT_R11G11B10_FLOAT ||
 262        format_desc->format == PIPE_FORMAT_R9G9B9E5_FLOAT)
 263      return TRUE;
 264
 265    if (bind & PIPE_BIND_RENDER_TARGET) {
 266       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS ||
 267           format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB)
 268          return FALSE;
 269
 270       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 271          return FALSE;
 272
 273       if (format_desc->block.width != 1 ||
 274           format_desc->block.height != 1)
 275          return FALSE;
 276    }
 277
 278    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 279       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 280          return FALSE;
 281    }
 282
 283    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 284       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 285          return FALSE;
 286
 287       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 288          return FALSE;
 289
 290       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 291       if (format_desc->block.bits != 32)
 292          return FALSE;
 293    }
 294
 295    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 296       return util_format_s3tc_enabled;
 297    }
 298
 299    /*
 300     * Everything can be supported by u_format.
 301     */
 302
 303    if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS &&
 304        !format_desc->fetch_rgba_float) {
 305       return FALSE;
 306    }
 307
 308    return TRUE;
 309 }
 310
 311
 312
 313
 314 static void
 315 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 316                            struct pipe_resource *resource,
 317                            unsigned level, unsigned layer,
 318                            void *context_private)
 319 {
 320    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 321    struct sw_winsys *winsys = screen->winsys;
 322    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 323
 324    assert(texture->dt);
 325    if (texture->dt)
 326       winsys->displaytarget_display(winsys, texture->dt, context_private);
 327 }
 328
 329
 330 static void
 331 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 332 {
 333    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 334    struct sw_winsys *winsys = screen->winsys;
 335
 336    if (screen->rast)
 337       lp_rast_destroy(screen->rast);
 338
 339    lp_jit_screen_cleanup(screen);
 340
 341    if(winsys->destroy)
 342       winsys->destroy(winsys);
 343
 344    pipe_mutex_destroy(screen->rast_mutex);
 345
 346    FREE(screen);
 347 }
 348
 349
 350
 351
 352 /**
 353  * Fence reference counting.
 354  */
 355 static void
 356 llvmpipe_fence_reference(struct pipe_screen *screen,
 357                          struct pipe_fence_handle **ptr,
 358                          struct pipe_fence_handle *fence)
 359 {
 360    struct lp_fence **old = (struct lp_fence **) ptr;
 361    struct lp_fence *f = (struct lp_fence *) fence;
 362
 363    lp_fence_reference(old, f);
 364 }
 365
 366
 367 /**
 368  * Has the fence been executed/finished?
 369  */
 370 static boolean
 371 llvmpipe_fence_signalled(struct pipe_screen *screen,
 372                          struct pipe_fence_handle *fence)
 373 {
 374    struct lp_fence *f = (struct lp_fence *) fence;
 375    return lp_fence_signalled(f);
 376 }
 377
 378
 379 /**
 380  * Wait for the fence to finish.
 381  */
 382 static boolean
 383 llvmpipe_fence_finish(struct pipe_screen *screen,
 384                       struct pipe_fence_handle *fence_handle,
 385                       uint64_t timeout)
 386 {
 387    struct lp_fence *f = (struct lp_fence *) fence_handle;
 388
 389    lp_fence_wait(f);
 390    return TRUE;
 391 }
 392
 393
 394
 395 /**
 396  * Create a new pipe_screen object
 397  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 398  */
 399 struct pipe_screen *
 400 llvmpipe_create_screen(struct sw_winsys *winsys)
 401 {
 402    struct llvmpipe_screen *screen;
 403
 404 #ifdef PIPE_ARCH_X86
 405    /* require SSE2 due to LLVM PR6960. */
 406    util_cpu_detect();
 407    if (!util_cpu_caps.has_sse2)
 408        return NULL;
 409 #endif
 410
 411 #ifdef DEBUG
 412    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 413 #endif
 414
 415    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 416
 417    screen = CALLOC_STRUCT(llvmpipe_screen);
 418    if (!screen)
 419       return NULL;
 420
 421    screen->winsys = winsys;
 422
 423    screen->base.destroy = llvmpipe_destroy_screen;
 424
 425    screen->base.get_name = llvmpipe_get_name;
 426    screen->base.get_vendor = llvmpipe_get_vendor;
 427    screen->base.get_param = llvmpipe_get_param;
 428    screen->base.get_shader_param = llvmpipe_get_shader_param;
 429    screen->base.get_paramf = llvmpipe_get_paramf;
 430    screen->base.is_format_supported = llvmpipe_is_format_supported;
 431
 432    screen->base.context_create = llvmpipe_create_context;
 433    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 434    screen->base.fence_reference = llvmpipe_fence_reference;
 435    screen->base.fence_signalled = llvmpipe_fence_signalled;
 436    screen->base.fence_finish = llvmpipe_fence_finish;
 437
 438    llvmpipe_init_screen_resource_funcs(&screen->base);
 439
 440    lp_jit_screen_init(screen);
 441
 442    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 443 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 444    screen->num_threads = 0;
 445 #endif
 446    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 447    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 448
 449    screen->rast = lp_rast_create(screen->num_threads);
 450    if (!screen->rast) {
 451       lp_jit_screen_cleanup(screen);
 452       FREE(screen);
 453       return NULL;
 454    }
 455    pipe_mutex_init(screen->rast_mutex);
 456
 457    util_format_s3tc_init();
 458
 459    return &screen->base;
 460 }