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