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_format_s3tc.h"
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_screen.h"
  36
  37 #include "gallivm/lp_bld_limits.h"
  38 #include "lp_texture.h"
  39 #include "lp_fence.h"
  40 #include "lp_jit.h"
  41 #include "lp_screen.h"
  42 #include "lp_context.h"
  43 #include "lp_debug.h"
  44 #include "lp_public.h"
  45 #include "lp_limits.h"
  46 #include "lp_rast.h"
  47
  48 #include "state_tracker/sw_winsys.h"
  49
  50 #ifdef DEBUG
  51 int LP_DEBUG = 0;
  52
  53 static const struct debug_named_value lp_debug_flags[] = {
  54    { "pipe",   DEBUG_PIPE, NULL },
  55    { "tgsi",   DEBUG_TGSI, NULL },
  56    { "tex",    DEBUG_TEX, NULL },
  57    { "setup",  DEBUG_SETUP, NULL },
  58    { "rast",   DEBUG_RAST, NULL },
  59    { "query",  DEBUG_QUERY, NULL },
  60    { "screen", DEBUG_SCREEN, NULL },
  61    { "show_tiles",    DEBUG_SHOW_TILES, NULL },
  62    { "show_subtiles", DEBUG_SHOW_SUBTILES, NULL },
  63    { "counters", DEBUG_COUNTERS, NULL },
  64    { "scene", DEBUG_SCENE, NULL },
  65    { "fence", DEBUG_FENCE, NULL },
  66    { "mem", DEBUG_MEM, NULL },
  67    DEBUG_NAMED_VALUE_END
  68 };
  69 #endif
  70
  71
  72 static const char *
  73 llvmpipe_get_vendor(struct pipe_screen *screen)
  74 {
  75    return "VMware, Inc.";
  76 }
  77
  78
  79 static const char *
  80 llvmpipe_get_name(struct pipe_screen *screen)
  81 {
  82    return "llvmpipe";
  83 }
  84
  85
  86 static int
  87 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  88 {
  89    switch (param) {
  90    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  91       return PIPE_MAX_SAMPLERS;
  92    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  93       /* At this time, the draw module and llvmpipe driver only
  94        * support vertex shader texture lookups when LLVM is enabled in
  95        * the draw module.
  96        */
  97       if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
  98          return PIPE_MAX_VERTEX_SAMPLERS;
  99       else
 100          return 0;
 101    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 102       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
 103    case PIPE_CAP_NPOT_TEXTURES:
 104       return 1;
 105    case PIPE_CAP_TWO_SIDED_STENCIL:
 106       return 1;
 107    case PIPE_CAP_GLSL:
 108       return 1;
 109    case PIPE_CAP_SM3:
 110       return 1;
 111    case PIPE_CAP_ANISOTROPIC_FILTER:
 112       return 0;
 113    case PIPE_CAP_POINT_SPRITE:
 114       return 1;
 115    case PIPE_CAP_MAX_RENDER_TARGETS:
 116       return PIPE_MAX_COLOR_BUFS;
 117    case PIPE_CAP_OCCLUSION_QUERY:
 118       return 1;
 119    case PIPE_CAP_TIMER_QUERY:
 120       return 0;
 121    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 122       return 1;
 123    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 124       return 1;
 125    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 126       return 1;
 127    case PIPE_CAP_TEXTURE_SWIZZLE:
 128       return 1;
 129    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 130       return LP_MAX_TEXTURE_2D_LEVELS;
 131    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 132       return LP_MAX_TEXTURE_3D_LEVELS;
 133    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 134       return LP_MAX_TEXTURE_2D_LEVELS;
 135    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 136       return 1;
 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 0;
 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_MAX_VS_INSTRUCTIONS:
 150    case PIPE_CAP_MAX_FS_INSTRUCTIONS:
 151    case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
 152    case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
 153    case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
 154    case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
 155    case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
 156    case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
 157       /* There is no limit in number of instructions beyond available memory */
 158       return 32768;
 159    case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
 160    case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
 161       return LP_MAX_TGSI_NESTING;
 162    case PIPE_CAP_MAX_VS_INPUTS:
 163    case PIPE_CAP_MAX_FS_INPUTS:
 164       return PIPE_MAX_ATTRIBS;
 165    case PIPE_CAP_MAX_FS_CONSTS:
 166    case PIPE_CAP_MAX_VS_CONSTS:
 167       /* There is no limit in number of constants beyond available memory */
 168       return 32768;
 169    case PIPE_CAP_MAX_VS_TEMPS:
 170    case PIPE_CAP_MAX_FS_TEMPS:
 171       return LP_MAX_TGSI_TEMPS;
 172    case PIPE_CAP_MAX_VS_ADDRS:
 173    case PIPE_CAP_MAX_FS_ADDRS:
 174       return LP_MAX_TGSI_ADDRS;
 175    case PIPE_CAP_MAX_VS_PREDS:
 176    case PIPE_CAP_MAX_FS_PREDS:
 177       return LP_MAX_TGSI_PREDS;
 178    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 179       return 1;
 180    case PIPE_CAP_GEOMETRY_SHADER4:
 181       return 1;
 182    case PIPE_CAP_DEPTH_CLAMP:
 183       return 0;
 184    default:
 185       assert(0);
 186       return 0;
 187    }
 188 }
 189
 190
 191 static float
 192 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_cap param)
 193 {
 194    switch (param) {
 195    case PIPE_CAP_MAX_LINE_WIDTH:
 196       /* fall-through */
 197    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 198       return 255.0; /* arbitrary */
 199    case PIPE_CAP_MAX_POINT_WIDTH:
 200       /* fall-through */
 201    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 202       return 255.0; /* arbitrary */
 203    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 204       return 16.0; /* not actually signficant at this time */
 205    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 206       return 16.0; /* arbitrary */
 207    case PIPE_CAP_GUARD_BAND_LEFT:
 208    case PIPE_CAP_GUARD_BAND_TOP:
 209    case PIPE_CAP_GUARD_BAND_RIGHT:
 210    case PIPE_CAP_GUARD_BAND_BOTTOM:
 211       return 0.0;
 212    default:
 213       assert(0);
 214       return 0;
 215    }
 216 }
 217
 218
 219 /**
 220  * Query format support for creating a texture, drawing surface, etc.
 221  * \param format  the format to test
 222  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 223  */
 224 static boolean
 225 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 226                               enum pipe_format format,
 227                               enum pipe_texture_target target,
 228                               unsigned sample_count,
 229                               unsigned bind,
 230                               unsigned geom_flags )
 231 {
 232    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 233    struct sw_winsys *winsys = screen->winsys;
 234    const struct util_format_description *format_desc;
 235
 236    format_desc = util_format_description(format);
 237    if (!format_desc)
 238       return FALSE;
 239
 240    assert(target == PIPE_BUFFER ||
 241           target == PIPE_TEXTURE_1D ||
 242           target == PIPE_TEXTURE_2D ||
 243           target == PIPE_TEXTURE_RECT ||
 244           target == PIPE_TEXTURE_3D ||
 245           target == PIPE_TEXTURE_CUBE);
 246
 247    if (sample_count > 1)
 248       return FALSE;
 249
 250    if (bind & PIPE_BIND_RENDER_TARGET) {
 251       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 252          return FALSE;
 253
 254       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 255          return FALSE;
 256
 257       if (format_desc->block.width != 1 ||
 258           format_desc->block.height != 1)
 259          return FALSE;
 260    }
 261
 262    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 263       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 264          return FALSE;
 265    }
 266
 267    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 268       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 269          return FALSE;
 270
 271       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 272          return FALSE;
 273
 274       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 275       if (format_desc->block.bits != 32)
 276          return FALSE;
 277    }
 278
 279    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 280       return util_format_s3tc_enabled;
 281    }
 282
 283    /*
 284     * Everything else should be supported by u_format.
 285     */
 286    return TRUE;
 287 }
 288
 289
 290
 291
 292 static void
 293 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 294                            struct pipe_surface *surface,
 295                            void *context_private)
 296 {
 297    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 298    struct sw_winsys *winsys = screen->winsys;
 299    struct llvmpipe_resource *texture = llvmpipe_resource(surface->texture);
 300
 301    assert(texture->dt);
 302    if (texture->dt)
 303       winsys->displaytarget_display(winsys, texture->dt, context_private);
 304 }
 305
 306
 307 static void
 308 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 309 {
 310    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 311    struct sw_winsys *winsys = screen->winsys;
 312
 313    if (screen->rast)
 314       lp_rast_destroy(screen->rast);
 315
 316    lp_jit_screen_cleanup(screen);
 317
 318    if(winsys->destroy)
 319       winsys->destroy(winsys);
 320
 321    pipe_mutex_destroy(screen->rast_mutex);
 322
 323    FREE(screen);
 324 }
 325
 326
 327
 328
 329 /**
 330  * Fence reference counting.
 331  */
 332 static void
 333 llvmpipe_fence_reference(struct pipe_screen *screen,
 334                          struct pipe_fence_handle **ptr,
 335                          struct pipe_fence_handle *fence)
 336 {
 337    struct lp_fence **old = (struct lp_fence **) ptr;
 338    struct lp_fence *f = (struct lp_fence *) fence;
 339
 340    lp_fence_reference(old, f);
 341 }
 342
 343
 344 /**
 345  * Has the fence been executed/finished?
 346  */
 347 static int
 348 llvmpipe_fence_signalled(struct pipe_screen *screen,
 349                          struct pipe_fence_handle *fence,
 350                          unsigned flag)
 351 {
 352    struct lp_fence *f = (struct lp_fence *) fence;
 353    return lp_fence_signalled(f);
 354 }
 355
 356
 357 /**
 358  * Wait for the fence to finish.
 359  */
 360 static int
 361 llvmpipe_fence_finish(struct pipe_screen *screen,
 362                       struct pipe_fence_handle *fence_handle,
 363                       unsigned flag)
 364 {
 365    struct lp_fence *f = (struct lp_fence *) fence_handle;
 366
 367    lp_fence_wait(f);
 368    return 0;
 369 }
 370
 371
 372
 373 /**
 374  * Create a new pipe_screen object
 375  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 376  */
 377 struct pipe_screen *
 378 llvmpipe_create_screen(struct sw_winsys *winsys)
 379 {
 380    struct llvmpipe_screen *screen;
 381
 382 #ifdef PIPE_ARCH_X86
 383    /* require SSE2 due to LLVM PR6960. */
 384    util_cpu_detect();
 385    if (!util_cpu_caps.has_sse2)
 386        return NULL;
 387 #endif
 388
 389    screen = CALLOC_STRUCT(llvmpipe_screen);
 390
 391 #ifdef DEBUG
 392    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 393 #endif
 394
 395    if (!screen)
 396       return NULL;
 397
 398    screen->winsys = winsys;
 399
 400    screen->base.destroy = llvmpipe_destroy_screen;
 401
 402    screen->base.get_name = llvmpipe_get_name;
 403    screen->base.get_vendor = llvmpipe_get_vendor;
 404    screen->base.get_param = llvmpipe_get_param;
 405    screen->base.get_paramf = llvmpipe_get_paramf;
 406    screen->base.is_format_supported = llvmpipe_is_format_supported;
 407
 408    screen->base.context_create = llvmpipe_create_context;
 409    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 410    screen->base.fence_reference = llvmpipe_fence_reference;
 411    screen->base.fence_signalled = llvmpipe_fence_signalled;
 412    screen->base.fence_finish = llvmpipe_fence_finish;
 413
 414    llvmpipe_init_screen_resource_funcs(&screen->base);
 415
 416    lp_jit_screen_init(screen);
 417
 418 #ifdef PIPE_OS_EMBEDDED
 419    screen->num_threads = 0;
 420 #else
 421    screen->num_threads = util_cpu_caps.nr_cpus;
 422 #endif
 423    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 424    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 425
 426    screen->rast = lp_rast_create(screen->num_threads);
 427    if (!screen->rast) {
 428       lp_jit_screen_cleanup(screen);
 429       FREE(screen);
 430       return NULL;
 431    }
 432    pipe_mutex_init(screen->rast_mutex);
 433
 434    util_format_s3tc_init();
 435
 436    return &screen->base;
 437 }