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