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    DEBUG_NAMED_VALUE_END
  68 };
  69 #endif
  70
  71 int LP_PERF = 0;
  72 static const struct debug_named_value lp_perf_flags[] = {
  73    { "texmem",         PERF_TEX_MEM, NULL },
  74    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  75    { "no_linear",      PERF_NO_LINEAR, NULL },
  76    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  77    { "no_tex",         PERF_NO_TEX, NULL },
  78    { "no_blend",       PERF_NO_BLEND, NULL },
  79    { "no_depth",       PERF_NO_DEPTH, NULL },
  80    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  81    DEBUG_NAMED_VALUE_END
  82 };
  83
  84
  85 static const char *
  86 llvmpipe_get_vendor(struct pipe_screen *screen)
  87 {
  88    return "VMware, Inc.";
  89 }
  90
  91
  92 static const char *
  93 llvmpipe_get_name(struct pipe_screen *screen)
  94 {
  95    return "llvmpipe";
  96 }
  97
  98
  99 static int
 100 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 101 {
 102    switch (param) {
 103    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 104       return PIPE_MAX_SAMPLERS;
 105    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 106       /* At this time, the draw module and llvmpipe driver only
 107        * support vertex shader texture lookups when LLVM is enabled in
 108        * the draw module.
 109        */
 110       if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 111          return PIPE_MAX_VERTEX_SAMPLERS;
 112       else
 113          return 0;
 114    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 115       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
 116    case PIPE_CAP_NPOT_TEXTURES:
 117       return 1;
 118    case PIPE_CAP_TWO_SIDED_STENCIL:
 119       return 1;
 120    case PIPE_CAP_GLSL:
 121       return 1;
 122    case PIPE_CAP_SM3:
 123       return 1;
 124    case PIPE_CAP_ANISOTROPIC_FILTER:
 125       return 0;
 126    case PIPE_CAP_POINT_SPRITE:
 127       return 1;
 128    case PIPE_CAP_MAX_RENDER_TARGETS:
 129       return PIPE_MAX_COLOR_BUFS;
 130    case PIPE_CAP_OCCLUSION_QUERY:
 131       return 1;
 132    case PIPE_CAP_TIMER_QUERY:
 133       return 0;
 134    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 135       return 1;
 136    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 137       return 1;
 138    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 139       return 1;
 140    case PIPE_CAP_TEXTURE_SWIZZLE:
 141       return 1;
 142    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 143       return LP_MAX_TEXTURE_2D_LEVELS;
 144    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 145       return LP_MAX_TEXTURE_3D_LEVELS;
 146    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 147       return LP_MAX_TEXTURE_2D_LEVELS;
 148    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 149       return 1;
 150    case PIPE_CAP_INDEP_BLEND_ENABLE:
 151       return 1;
 152    case PIPE_CAP_INDEP_BLEND_FUNC:
 153       return 0;
 154    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 155    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 156       return 1;
 157    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 158    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 159       return 0;
 160    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 161       return 1;
 162    case PIPE_CAP_DEPTH_CLAMP:
 163       return 0;
 164    default:
 165       return 0;
 166    }
 167 }
 168
 169 static int
 170 llvmpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 171 {
 172    switch(shader)
 173    {
 174    case PIPE_SHADER_FRAGMENT:
 175       return tgsi_exec_get_shader_param(param);
 176    case PIPE_SHADER_VERTEX:
 177    case PIPE_SHADER_GEOMETRY:
 178       return draw_get_shader_param(shader, param);
 179    default:
 180       return 0;
 181    }
 182 }
 183
 184 static float
 185 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_cap param)
 186 {
 187    switch (param) {
 188    case PIPE_CAP_MAX_LINE_WIDTH:
 189       /* fall-through */
 190    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 191       return 255.0; /* arbitrary */
 192    case PIPE_CAP_MAX_POINT_WIDTH:
 193       /* fall-through */
 194    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 195       return 255.0; /* arbitrary */
 196    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 197       return 16.0; /* not actually signficant at this time */
 198    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 199       return 16.0; /* arbitrary */
 200    case PIPE_CAP_GUARD_BAND_LEFT:
 201    case PIPE_CAP_GUARD_BAND_TOP:
 202    case PIPE_CAP_GUARD_BAND_RIGHT:
 203    case PIPE_CAP_GUARD_BAND_BOTTOM:
 204       return 0.0;
 205    default:
 206       assert(0);
 207       return 0;
 208    }
 209 }
 210
 211
 212 /**
 213  * Query format support for creating a texture, drawing surface, etc.
 214  * \param format  the format to test
 215  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 216  */
 217 static boolean
 218 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 219                               enum pipe_format format,
 220                               enum pipe_texture_target target,
 221                               unsigned sample_count,
 222                               unsigned bind,
 223                               unsigned geom_flags )
 224 {
 225    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 226    struct sw_winsys *winsys = screen->winsys;
 227    const struct util_format_description *format_desc;
 228
 229    format_desc = util_format_description(format);
 230    if (!format_desc)
 231       return FALSE;
 232
 233    assert(target == PIPE_BUFFER ||
 234           target == PIPE_TEXTURE_1D ||
 235           target == PIPE_TEXTURE_2D ||
 236           target == PIPE_TEXTURE_RECT ||
 237           target == PIPE_TEXTURE_3D ||
 238           target == PIPE_TEXTURE_CUBE);
 239
 240    if (sample_count > 1)
 241       return FALSE;
 242
 243    if (bind & PIPE_BIND_RENDER_TARGET) {
 244       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 245          return FALSE;
 246
 247       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 248          return FALSE;
 249
 250       if (format_desc->block.width != 1 ||
 251           format_desc->block.height != 1)
 252          return FALSE;
 253    }
 254
 255    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 256       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 257          return FALSE;
 258    }
 259
 260    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 261       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 262          return FALSE;
 263
 264       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 265          return FALSE;
 266
 267       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 268       if (format_desc->block.bits != 32)
 269          return FALSE;
 270    }
 271
 272    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 273       return util_format_s3tc_enabled;
 274    }
 275
 276    /*
 277     * Everything else should be supported by u_format.
 278     */
 279    return TRUE;
 280 }
 281
 282
 283
 284
 285 static void
 286 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 287                            struct pipe_surface *surface,
 288                            void *context_private)
 289 {
 290    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 291    struct sw_winsys *winsys = screen->winsys;
 292    struct llvmpipe_resource *texture = llvmpipe_resource(surface->texture);
 293
 294    assert(texture->dt);
 295    if (texture->dt)
 296       winsys->displaytarget_display(winsys, texture->dt, context_private);
 297 }
 298
 299
 300 static void
 301 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 302 {
 303    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 304    struct sw_winsys *winsys = screen->winsys;
 305
 306    if (screen->rast)
 307       lp_rast_destroy(screen->rast);
 308
 309    lp_jit_screen_cleanup(screen);
 310
 311    if(winsys->destroy)
 312       winsys->destroy(winsys);
 313
 314    pipe_mutex_destroy(screen->rast_mutex);
 315
 316    FREE(screen);
 317 }
 318
 319
 320
 321
 322 /**
 323  * Fence reference counting.
 324  */
 325 static void
 326 llvmpipe_fence_reference(struct pipe_screen *screen,
 327                          struct pipe_fence_handle **ptr,
 328                          struct pipe_fence_handle *fence)
 329 {
 330    struct lp_fence **old = (struct lp_fence **) ptr;
 331    struct lp_fence *f = (struct lp_fence *) fence;
 332
 333    lp_fence_reference(old, f);
 334 }
 335
 336
 337 /**
 338  * Has the fence been executed/finished?
 339  */
 340 static int
 341 llvmpipe_fence_signalled(struct pipe_screen *screen,
 342                          struct pipe_fence_handle *fence,
 343                          unsigned flag)
 344 {
 345    struct lp_fence *f = (struct lp_fence *) fence;
 346    return lp_fence_signalled(f);
 347 }
 348
 349
 350 /**
 351  * Wait for the fence to finish.
 352  */
 353 static int
 354 llvmpipe_fence_finish(struct pipe_screen *screen,
 355                       struct pipe_fence_handle *fence_handle,
 356                       unsigned flag)
 357 {
 358    struct lp_fence *f = (struct lp_fence *) fence_handle;
 359
 360    lp_fence_wait(f);
 361    return 0;
 362 }
 363
 364
 365
 366 /**
 367  * Create a new pipe_screen object
 368  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 369  */
 370 struct pipe_screen *
 371 llvmpipe_create_screen(struct sw_winsys *winsys)
 372 {
 373    struct llvmpipe_screen *screen;
 374
 375 #ifdef PIPE_ARCH_X86
 376    /* require SSE2 due to LLVM PR6960. */
 377    util_cpu_detect();
 378    if (!util_cpu_caps.has_sse2)
 379        return NULL;
 380 #endif
 381
 382    screen = CALLOC_STRUCT(llvmpipe_screen);
 383
 384 #ifdef DEBUG
 385    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 386 #endif
 387
 388    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 389
 390    if (!screen)
 391       return NULL;
 392
 393    screen->winsys = winsys;
 394
 395    screen->base.destroy = llvmpipe_destroy_screen;
 396
 397    screen->base.get_name = llvmpipe_get_name;
 398    screen->base.get_vendor = llvmpipe_get_vendor;
 399    screen->base.get_param = llvmpipe_get_param;
 400    screen->base.get_shader_param = llvmpipe_get_shader_param;
 401    screen->base.get_paramf = llvmpipe_get_paramf;
 402    screen->base.is_format_supported = llvmpipe_is_format_supported;
 403
 404    screen->base.context_create = llvmpipe_create_context;
 405    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 406    screen->base.fence_reference = llvmpipe_fence_reference;
 407    screen->base.fence_signalled = llvmpipe_fence_signalled;
 408    screen->base.fence_finish = llvmpipe_fence_finish;
 409
 410    llvmpipe_init_screen_resource_funcs(&screen->base);
 411
 412    lp_jit_screen_init(screen);
 413
 414 #ifdef PIPE_OS_EMBEDDED
 415    screen->num_threads = 0;
 416 #else
 417    screen->num_threads = util_cpu_caps.nr_cpus;
 418 #endif
 419    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 420    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 421
 422    screen->rast = lp_rast_create(screen->num_threads);
 423    if (!screen->rast) {
 424       lp_jit_screen_cleanup(screen);
 425       FREE(screen);
 426       return NULL;
 427    }
 428    pipe_mutex_init(screen->rast_mutex);
 429
 430    util_format_s3tc_init();
 431
 432    return &screen->base;
 433 }