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