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 #include "draw/draw_context.h"
  37
  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    { "fs", DEBUG_FS, NULL },
  68    DEBUG_NAMED_VALUE_END
  69 };
  70 #endif
  71
  72 int LP_PERF = 0;
  73 static const struct debug_named_value lp_perf_flags[] = {
  74    { "texmem",         PERF_TEX_MEM, NULL },
  75    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  76    { "no_linear",      PERF_NO_LINEAR, NULL },
  77    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  78    { "no_tex",         PERF_NO_TEX, NULL },
  79    { "no_blend",       PERF_NO_BLEND, NULL },
  80    { "no_depth",       PERF_NO_DEPTH, NULL },
  81    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  82    DEBUG_NAMED_VALUE_END
  83 };
  84
  85
  86 static const char *
  87 llvmpipe_get_vendor(struct pipe_screen *screen)
  88 {
  89    return "VMware, Inc.";
  90 }
  91
  92
  93 static const char *
  94 llvmpipe_get_name(struct pipe_screen *screen)
  95 {
  96    return "llvmpipe";
  97 }
  98
  99
 100 static int
 101 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 102 {
 103    switch (param) {
 104    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 105       return PIPE_MAX_SAMPLERS;
 106    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 107       /* At this time, the draw module and llvmpipe driver only
 108        * support vertex shader texture lookups when LLVM is enabled in
 109        * the draw module.
 110        */
 111       if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 112          return PIPE_MAX_VERTEX_SAMPLERS;
 113       else
 114          return 0;
 115    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 116       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
 117    case PIPE_CAP_NPOT_TEXTURES:
 118       return 1;
 119    case PIPE_CAP_TWO_SIDED_STENCIL:
 120       return 1;
 121    case PIPE_CAP_GLSL:
 122       return 1;
 123    case PIPE_CAP_SM3:
 124       return 1;
 125    case PIPE_CAP_ANISOTROPIC_FILTER:
 126       return 0;
 127    case PIPE_CAP_POINT_SPRITE:
 128       return 1;
 129    case PIPE_CAP_MAX_RENDER_TARGETS:
 130       return PIPE_MAX_COLOR_BUFS;
 131    case PIPE_CAP_OCCLUSION_QUERY:
 132       return 1;
 133    case PIPE_CAP_TIMER_QUERY:
 134       return 0;
 135    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 136       return 1;
 137    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 138       return 1;
 139    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 140       return 1;
 141    case PIPE_CAP_TEXTURE_SWIZZLE:
 142       return 1;
 143    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 144       return LP_MAX_TEXTURE_2D_LEVELS;
 145    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 146       return LP_MAX_TEXTURE_3D_LEVELS;
 147    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 148       return LP_MAX_TEXTURE_2D_LEVELS;
 149    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 150       return 1;
 151    case PIPE_CAP_INDEP_BLEND_ENABLE:
 152       return 1;
 153    case PIPE_CAP_INDEP_BLEND_FUNC:
 154       return 0;
 155    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 156    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 157       return 1;
 158    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 159    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 160       return 0;
 161    case PIPE_CAP_PRIMITIVE_RESTART:
 162       return 1;
 163    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 164       return 1;
 165    case PIPE_CAP_DEPTH_CLAMP:
 166       return 0;
 167    default:
 168       return 0;
 169    }
 170 }
 171
 172 static int
 173 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 174 {
 175    switch(shader)
 176    {
 177    case PIPE_SHADER_FRAGMENT:
 178       return tgsi_exec_get_shader_param(param);
 179    case PIPE_SHADER_VERTEX:
 180    case PIPE_SHADER_GEOMETRY:
 181       return draw_get_shader_param(shader, param);
 182    default:
 183       return 0;
 184    }
 185 }
 186
 187 static float
 188 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_cap param)
 189 {
 190    switch (param) {
 191    case PIPE_CAP_MAX_LINE_WIDTH:
 192       /* fall-through */
 193    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 194       return 255.0; /* arbitrary */
 195    case PIPE_CAP_MAX_POINT_WIDTH:
 196       /* fall-through */
 197    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 198       return 255.0; /* arbitrary */
 199    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 200       return 16.0; /* not actually signficant at this time */
 201    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 202       return 16.0; /* arbitrary */
 203    case PIPE_CAP_GUARD_BAND_LEFT:
 204    case PIPE_CAP_GUARD_BAND_TOP:
 205    case PIPE_CAP_GUARD_BAND_RIGHT:
 206    case PIPE_CAP_GUARD_BAND_BOTTOM:
 207       return 0.0;
 208    default:
 209       assert(0);
 210       return 0;
 211    }
 212 }
 213
 214
 215 /**
 216  * Query format support for creating a texture, drawing surface, etc.
 217  * \param format  the format to test
 218  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 219  */
 220 static boolean
 221 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 222                               enum pipe_format format,
 223                               enum pipe_texture_target target,
 224                               unsigned sample_count,
 225                               unsigned bind,
 226                               unsigned geom_flags )
 227 {
 228    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 229    struct sw_winsys *winsys = screen->winsys;
 230    const struct util_format_description *format_desc;
 231
 232    format_desc = util_format_description(format);
 233    if (!format_desc)
 234       return FALSE;
 235
 236    assert(target == PIPE_BUFFER ||
 237           target == PIPE_TEXTURE_1D ||
 238           target == PIPE_TEXTURE_2D ||
 239           target == PIPE_TEXTURE_RECT ||
 240           target == PIPE_TEXTURE_3D ||
 241           target == PIPE_TEXTURE_CUBE);
 242
 243    if (sample_count > 1)
 244       return FALSE;
 245
 246    if (bind & PIPE_BIND_RENDER_TARGET) {
 247       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 248          return FALSE;
 249
 250       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 251          return FALSE;
 252
 253       if (format_desc->block.width != 1 ||
 254           format_desc->block.height != 1)
 255          return FALSE;
 256    }
 257
 258    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 259       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 260          return FALSE;
 261    }
 262
 263    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 264       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 265          return FALSE;
 266
 267       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 268          return FALSE;
 269
 270       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 271       if (format_desc->block.bits != 32)
 272          return FALSE;
 273    }
 274
 275    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 276       return util_format_s3tc_enabled;
 277    }
 278
 279    /*
 280     * Everything else should be supported by u_format.
 281     */
 282    return TRUE;
 283 }
 284
 285
 286
 287
 288 static void
 289 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 290                            struct pipe_resource *resource,
 291                            unsigned level, unsigned layer,
 292                            void *context_private)
 293 {
 294    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 295    struct sw_winsys *winsys = screen->winsys;
 296    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 297
 298    assert(texture->dt);
 299    if (texture->dt)
 300       winsys->displaytarget_display(winsys, texture->dt, context_private);
 301 }
 302
 303
 304 static void
 305 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 306 {
 307    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 308    struct sw_winsys *winsys = screen->winsys;
 309
 310    if (screen->rast)
 311       lp_rast_destroy(screen->rast);
 312
 313    lp_jit_screen_cleanup(screen);
 314
 315    if(winsys->destroy)
 316       winsys->destroy(winsys);
 317
 318    pipe_mutex_destroy(screen->rast_mutex);
 319
 320    FREE(screen);
 321 }
 322
 323
 324
 325
 326 /**
 327  * Fence reference counting.
 328  */
 329 static void
 330 llvmpipe_fence_reference(struct pipe_screen *screen,
 331                          struct pipe_fence_handle **ptr,
 332                          struct pipe_fence_handle *fence)
 333 {
 334    struct lp_fence **old = (struct lp_fence **) ptr;
 335    struct lp_fence *f = (struct lp_fence *) fence;
 336
 337    lp_fence_reference(old, f);
 338 }
 339
 340
 341 /**
 342  * Has the fence been executed/finished?
 343  */
 344 static int
 345 llvmpipe_fence_signalled(struct pipe_screen *screen,
 346                          struct pipe_fence_handle *fence,
 347                          unsigned flag)
 348 {
 349    struct lp_fence *f = (struct lp_fence *) fence;
 350    return lp_fence_signalled(f);
 351 }
 352
 353
 354 /**
 355  * Wait for the fence to finish.
 356  */
 357 static int
 358 llvmpipe_fence_finish(struct pipe_screen *screen,
 359                       struct pipe_fence_handle *fence_handle,
 360                       unsigned flag)
 361 {
 362    struct lp_fence *f = (struct lp_fence *) fence_handle;
 363
 364    lp_fence_wait(f);
 365    return 0;
 366 }
 367
 368
 369
 370 /**
 371  * Create a new pipe_screen object
 372  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 373  */
 374 struct pipe_screen *
 375 llvmpipe_create_screen(struct sw_winsys *winsys)
 376 {
 377    struct llvmpipe_screen *screen;
 378
 379 #ifdef PIPE_ARCH_X86
 380    /* require SSE2 due to LLVM PR6960. */
 381    util_cpu_detect();
 382    if (!util_cpu_caps.has_sse2)
 383        return NULL;
 384 #endif
 385
 386    screen = CALLOC_STRUCT(llvmpipe_screen);
 387
 388 #ifdef DEBUG
 389    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 390 #endif
 391
 392    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 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_shader_param = llvmpipe_get_shader_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    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 419 #ifdef PIPE_OS_EMBEDDED
 420    screen->num_threads = 0;
 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 }