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