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 1;
 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    case PIPE_CAP_TGSI_INSTANCEID:
 168    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 169    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 170       return 1;
 171    default:
 172       return 0;
 173    }
 174 }
 175
 176 static int
 177 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 178 {
 179    switch(shader)
 180    {
 181    case PIPE_SHADER_FRAGMENT:
 182       return tgsi_exec_get_shader_param(param);
 183    case PIPE_SHADER_VERTEX:
 184    case PIPE_SHADER_GEOMETRY:
 185       return draw_get_shader_param(shader, param);
 186    default:
 187       return 0;
 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 {
 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    /* u_format doesn't support RGTC yet */
 283    if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC) {
 284       return FALSE;
 285    }
 286
 287    /*
 288     * Everything else should be supported by u_format.
 289     */
 290    return TRUE;
 291 }
 292
 293
 294
 295
 296 static void
 297 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 298                            struct pipe_resource *resource,
 299                            unsigned level, unsigned layer,
 300                            void *context_private)
 301 {
 302    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 303    struct sw_winsys *winsys = screen->winsys;
 304    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 305
 306    assert(texture->dt);
 307    if (texture->dt)
 308       winsys->displaytarget_display(winsys, texture->dt, context_private);
 309 }
 310
 311
 312 static void
 313 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 314 {
 315    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 316    struct sw_winsys *winsys = screen->winsys;
 317
 318    if (screen->rast)
 319       lp_rast_destroy(screen->rast);
 320
 321    lp_jit_screen_cleanup(screen);
 322
 323    if(winsys->destroy)
 324       winsys->destroy(winsys);
 325
 326    pipe_mutex_destroy(screen->rast_mutex);
 327
 328    FREE(screen);
 329 }
 330
 331
 332
 333
 334 /**
 335  * Fence reference counting.
 336  */
 337 static void
 338 llvmpipe_fence_reference(struct pipe_screen *screen,
 339                          struct pipe_fence_handle **ptr,
 340                          struct pipe_fence_handle *fence)
 341 {
 342    struct lp_fence **old = (struct lp_fence **) ptr;
 343    struct lp_fence *f = (struct lp_fence *) fence;
 344
 345    lp_fence_reference(old, f);
 346 }
 347
 348
 349 /**
 350  * Has the fence been executed/finished?
 351  */
 352 static boolean
 353 llvmpipe_fence_signalled(struct pipe_screen *screen,
 354                          struct pipe_fence_handle *fence)
 355 {
 356    struct lp_fence *f = (struct lp_fence *) fence;
 357    return lp_fence_signalled(f);
 358 }
 359
 360
 361 /**
 362  * Wait for the fence to finish.
 363  */
 364 static boolean
 365 llvmpipe_fence_finish(struct pipe_screen *screen,
 366                       struct pipe_fence_handle *fence_handle,
 367                       uint64_t timeout)
 368 {
 369    struct lp_fence *f = (struct lp_fence *) fence_handle;
 370
 371    lp_fence_wait(f);
 372    return TRUE;
 373 }
 374
 375
 376
 377 /**
 378  * Create a new pipe_screen object
 379  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 380  */
 381 struct pipe_screen *
 382 llvmpipe_create_screen(struct sw_winsys *winsys)
 383 {
 384    struct llvmpipe_screen *screen;
 385
 386 #ifdef PIPE_ARCH_X86
 387    /* require SSE2 due to LLVM PR6960. */
 388    util_cpu_detect();
 389    if (!util_cpu_caps.has_sse2)
 390        return NULL;
 391 #endif
 392
 393    screen = CALLOC_STRUCT(llvmpipe_screen);
 394
 395 #ifdef DEBUG
 396    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 397 #endif
 398
 399    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 400
 401    if (!screen)
 402       return NULL;
 403
 404    screen->winsys = winsys;
 405
 406    screen->base.destroy = llvmpipe_destroy_screen;
 407
 408    screen->base.get_name = llvmpipe_get_name;
 409    screen->base.get_vendor = llvmpipe_get_vendor;
 410    screen->base.get_param = llvmpipe_get_param;
 411    screen->base.get_shader_param = llvmpipe_get_shader_param;
 412    screen->base.get_paramf = llvmpipe_get_paramf;
 413    screen->base.is_format_supported = llvmpipe_is_format_supported;
 414
 415    screen->base.context_create = llvmpipe_create_context;
 416    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 417    screen->base.fence_reference = llvmpipe_fence_reference;
 418    screen->base.fence_signalled = llvmpipe_fence_signalled;
 419    screen->base.fence_finish = llvmpipe_fence_finish;
 420
 421    llvmpipe_init_screen_resource_funcs(&screen->base);
 422
 423    lp_jit_screen_init(screen);
 424
 425    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 426 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 427    screen->num_threads = 0;
 428 #endif
 429    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 430    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 431
 432    screen->rast = lp_rast_create(screen->num_threads);
 433    if (!screen->rast) {
 434       lp_jit_screen_cleanup(screen);
 435       FREE(screen);
 436       return NULL;
 437    }
 438    pipe_mutex_init(screen->rast_mutex);
 439
 440    util_format_s3tc_init();
 441
 442    return &screen->base;
 443 }