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