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_GLSL:
 114       return 1;
 115    case PIPE_CAP_SM3:
 116       return 1;
 117    case PIPE_CAP_ANISOTROPIC_FILTER:
 118       return 0;
 119    case PIPE_CAP_POINT_SPRITE:
 120       return 1;
 121    case PIPE_CAP_MAX_RENDER_TARGETS:
 122       return PIPE_MAX_COLOR_BUFS;
 123    case PIPE_CAP_OCCLUSION_QUERY:
 124       return 1;
 125    case PIPE_CAP_TIMER_QUERY:
 126       return 0;
 127    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 128       return 1;
 129    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 130       return 1;
 131    case PIPE_CAP_TEXTURE_SWIZZLE:
 132       return 1;
 133    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 134       return LP_MAX_TEXTURE_2D_LEVELS;
 135    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 136       return LP_MAX_TEXTURE_3D_LEVELS;
 137    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 138       return LP_MAX_TEXTURE_2D_LEVELS;
 139    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 140       return 1;
 141    case PIPE_CAP_INDEP_BLEND_ENABLE:
 142       return 1;
 143    case PIPE_CAP_INDEP_BLEND_FUNC:
 144       return 1;
 145    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 146    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 147       return 1;
 148    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 149    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 150       return 0;
 151    case PIPE_CAP_PRIMITIVE_RESTART:
 152       return 1;
 153    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 154       return 1;
 155    case PIPE_CAP_DEPTH_CLAMP:
 156       return 0;
 157    case PIPE_CAP_TGSI_INSTANCEID:
 158    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 159    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 160       return 1;
 161    default:
 162       return 0;
 163    }
 164 }
 165
 166 static int
 167 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 168 {
 169    switch(shader)
 170    {
 171    case PIPE_SHADER_FRAGMENT:
 172       return tgsi_exec_get_shader_param(param);
 173    case PIPE_SHADER_VERTEX:
 174    case PIPE_SHADER_GEOMETRY:
 175       switch (param) {
 176       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 177          /* At this time, the draw module and llvmpipe driver only
 178           * support vertex shader texture lookups when LLVM is enabled in
 179           * the draw module.
 180           */
 181          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 182             return PIPE_MAX_VERTEX_SAMPLERS;
 183          else
 184             return 0;
 185       default:
 186          return draw_get_shader_param(shader, param);
 187       }
 188    default:
 189       return 0;
 190    }
 191 }
 192
 193 static float
 194 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_cap param)
 195 {
 196    switch (param) {
 197    case PIPE_CAP_MAX_LINE_WIDTH:
 198       /* fall-through */
 199    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 200       return 255.0; /* arbitrary */
 201    case PIPE_CAP_MAX_POINT_WIDTH:
 202       /* fall-through */
 203    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 204       return 255.0; /* arbitrary */
 205    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 206       return 16.0; /* not actually signficant at this time */
 207    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 208       return 16.0; /* arbitrary */
 209    case PIPE_CAP_GUARD_BAND_LEFT:
 210    case PIPE_CAP_GUARD_BAND_TOP:
 211    case PIPE_CAP_GUARD_BAND_RIGHT:
 212    case PIPE_CAP_GUARD_BAND_BOTTOM:
 213       return 0.0;
 214    default:
 215       assert(0);
 216       return 0;
 217    }
 218 }
 219
 220
 221 /**
 222  * Query format support for creating a texture, drawing surface, etc.
 223  * \param format  the format to test
 224  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 225  */
 226 static boolean
 227 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 228                               enum pipe_format format,
 229                               enum pipe_texture_target target,
 230                               unsigned sample_count,
 231                               unsigned bind)
 232 {
 233    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 234    struct sw_winsys *winsys = screen->winsys;
 235    const struct util_format_description *format_desc;
 236
 237    format_desc = util_format_description(format);
 238    if (!format_desc)
 239       return FALSE;
 240
 241    assert(target == PIPE_BUFFER ||
 242           target == PIPE_TEXTURE_1D ||
 243           target == PIPE_TEXTURE_2D ||
 244           target == PIPE_TEXTURE_RECT ||
 245           target == PIPE_TEXTURE_3D ||
 246           target == PIPE_TEXTURE_CUBE);
 247
 248    if (sample_count > 1)
 249       return FALSE;
 250
 251    if (bind & PIPE_BIND_RENDER_TARGET) {
 252       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS ||
 253           format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB)
 254          return FALSE;
 255
 256       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 257          return FALSE;
 258
 259       if (format_desc->block.width != 1 ||
 260           format_desc->block.height != 1)
 261          return FALSE;
 262    }
 263
 264    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 265       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 266          return FALSE;
 267    }
 268
 269    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 270       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 271          return FALSE;
 272
 273       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 274          return FALSE;
 275
 276       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 277       if (format_desc->block.bits != 32)
 278          return FALSE;
 279    }
 280
 281    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 282       return util_format_s3tc_enabled;
 283    }
 284
 285    /*
 286     * Everything can be supported by u_format.
 287     */
 288
 289    if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS &&
 290        !format_desc->fetch_rgba_float) {
 291       return FALSE;
 292    }
 293
 294    return TRUE;
 295 }
 296
 297
 298
 299
 300 static void
 301 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 302                            struct pipe_resource *resource,
 303                            unsigned level, unsigned layer,
 304                            void *context_private)
 305 {
 306    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 307    struct sw_winsys *winsys = screen->winsys;
 308    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 309
 310    assert(texture->dt);
 311    if (texture->dt)
 312       winsys->displaytarget_display(winsys, texture->dt, context_private);
 313 }
 314
 315
 316 static void
 317 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 318 {
 319    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 320    struct sw_winsys *winsys = screen->winsys;
 321
 322    if (screen->rast)
 323       lp_rast_destroy(screen->rast);
 324
 325    lp_jit_screen_cleanup(screen);
 326
 327    if(winsys->destroy)
 328       winsys->destroy(winsys);
 329
 330    pipe_mutex_destroy(screen->rast_mutex);
 331
 332    FREE(screen);
 333 }
 334
 335
 336
 337
 338 /**
 339  * Fence reference counting.
 340  */
 341 static void
 342 llvmpipe_fence_reference(struct pipe_screen *screen,
 343                          struct pipe_fence_handle **ptr,
 344                          struct pipe_fence_handle *fence)
 345 {
 346    struct lp_fence **old = (struct lp_fence **) ptr;
 347    struct lp_fence *f = (struct lp_fence *) fence;
 348
 349    lp_fence_reference(old, f);
 350 }
 351
 352
 353 /**
 354  * Has the fence been executed/finished?
 355  */
 356 static boolean
 357 llvmpipe_fence_signalled(struct pipe_screen *screen,
 358                          struct pipe_fence_handle *fence)
 359 {
 360    struct lp_fence *f = (struct lp_fence *) fence;
 361    return lp_fence_signalled(f);
 362 }
 363
 364
 365 /**
 366  * Wait for the fence to finish.
 367  */
 368 static boolean
 369 llvmpipe_fence_finish(struct pipe_screen *screen,
 370                       struct pipe_fence_handle *fence_handle,
 371                       uint64_t timeout)
 372 {
 373    struct lp_fence *f = (struct lp_fence *) fence_handle;
 374
 375    lp_fence_wait(f);
 376    return TRUE;
 377 }
 378
 379
 380
 381 /**
 382  * Create a new pipe_screen object
 383  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 384  */
 385 struct pipe_screen *
 386 llvmpipe_create_screen(struct sw_winsys *winsys)
 387 {
 388    struct llvmpipe_screen *screen;
 389
 390 #ifdef PIPE_ARCH_X86
 391    /* require SSE2 due to LLVM PR6960. */
 392    util_cpu_detect();
 393    if (!util_cpu_caps.has_sse2)
 394        return NULL;
 395 #endif
 396
 397    screen = CALLOC_STRUCT(llvmpipe_screen);
 398
 399 #ifdef DEBUG
 400    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 401 #endif
 402
 403    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 404
 405    if (!screen)
 406       return NULL;
 407
 408    screen->winsys = winsys;
 409
 410    screen->base.destroy = llvmpipe_destroy_screen;
 411
 412    screen->base.get_name = llvmpipe_get_name;
 413    screen->base.get_vendor = llvmpipe_get_vendor;
 414    screen->base.get_param = llvmpipe_get_param;
 415    screen->base.get_shader_param = llvmpipe_get_shader_param;
 416    screen->base.get_paramf = llvmpipe_get_paramf;
 417    screen->base.is_format_supported = llvmpipe_is_format_supported;
 418
 419    screen->base.context_create = llvmpipe_create_context;
 420    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 421    screen->base.fence_reference = llvmpipe_fence_reference;
 422    screen->base.fence_signalled = llvmpipe_fence_signalled;
 423    screen->base.fence_finish = llvmpipe_fence_finish;
 424
 425    llvmpipe_init_screen_resource_funcs(&screen->base);
 426
 427    lp_jit_screen_init(screen);
 428
 429    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 430 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 431    screen->num_threads = 0;
 432 #endif
 433    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 434    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 435
 436    screen->rast = lp_rast_create(screen->num_threads);
 437    if (!screen->rast) {
 438       lp_jit_screen_cleanup(screen);
 439       FREE(screen);
 440       return NULL;
 441    }
 442    pipe_mutex_init(screen->rast_mutex);
 443
 444    util_format_s3tc_init();
 445
 446    return &screen->base;
 447 }