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
  37 #include "gallivm/lp_bld_limits.h"
  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
  47 #include "state_tracker/sw_winsys.h"
  48
  49 #ifdef DEBUG
  50 int LP_DEBUG = 0;
  51
  52 static const struct debug_named_value lp_debug_flags[] = {
  53    { "pipe",   DEBUG_PIPE },
  54    { "tgsi",   DEBUG_TGSI },
  55    { "tex",    DEBUG_TEX },
  56    { "setup",  DEBUG_SETUP },
  57    { "rast",   DEBUG_RAST },
  58    { "query",  DEBUG_QUERY },
  59    { "screen", DEBUG_SCREEN },
  60    { "show_tiles",    DEBUG_SHOW_TILES },
  61    { "show_subtiles", DEBUG_SHOW_SUBTILES },
  62    { "counters", DEBUG_COUNTERS },
  63    {NULL, 0}
  64 };
  65 #endif
  66
  67
  68 static const char *
  69 llvmpipe_get_vendor(struct pipe_screen *screen)
  70 {
  71    return "VMware, Inc.";
  72 }
  73
  74
  75 static const char *
  76 llvmpipe_get_name(struct pipe_screen *screen)
  77 {
  78    return "llvmpipe";
  79 }
  80
  81
  82 static int
  83 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  84 {
  85    switch (param) {
  86    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  87       return PIPE_MAX_SAMPLERS;
  88    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  89       return 0;
  90    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  91       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  92    case PIPE_CAP_NPOT_TEXTURES:
  93       return 1;
  94    case PIPE_CAP_TWO_SIDED_STENCIL:
  95       return 1;
  96    case PIPE_CAP_GLSL:
  97       return 1;
  98    case PIPE_CAP_SM3:
  99       return 1;
 100    case PIPE_CAP_ANISOTROPIC_FILTER:
 101       return 0;
 102    case PIPE_CAP_POINT_SPRITE:
 103       return 1;
 104    case PIPE_CAP_MAX_RENDER_TARGETS:
 105       return PIPE_MAX_COLOR_BUFS;
 106    case PIPE_CAP_OCCLUSION_QUERY:
 107       return 1;
 108    case PIPE_CAP_TIMER_QUERY:
 109       return 0;
 110    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 111       return 1;
 112    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 113       return 1;
 114    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 115       return 1;
 116    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 117       return LP_MAX_TEXTURE_2D_LEVELS;
 118    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 119       return LP_MAX_TEXTURE_3D_LEVELS;
 120    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 121       return LP_MAX_TEXTURE_2D_LEVELS;
 122    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 123       return 1;
 124    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 125       return 1;
 126    case PIPE_CAP_INDEP_BLEND_ENABLE:
 127       return 1;
 128    case PIPE_CAP_INDEP_BLEND_FUNC:
 129       return 0;
 130    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 131    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 132       return 1;
 133    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 134    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 135       return 0;
 136    case PIPE_CAP_MAX_VS_INSTRUCTIONS:
 137    case PIPE_CAP_MAX_FS_INSTRUCTIONS:
 138    case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
 139    case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
 140    case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
 141    case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
 142    case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
 143    case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
 144       /* There is no limit in number of instructions beyond available memory */
 145       return 32768;
 146    case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
 147    case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
 148       return LP_MAX_TGSI_NESTING;
 149    case PIPE_CAP_MAX_VS_INPUTS:
 150    case PIPE_CAP_MAX_FS_INPUTS:
 151       return PIPE_MAX_ATTRIBS;
 152    case PIPE_CAP_MAX_FS_CONSTS:
 153    case PIPE_CAP_MAX_VS_CONSTS:
 154       /* There is no limit in number of constants beyond available memory */
 155       return 32768;
 156    case PIPE_CAP_MAX_VS_TEMPS:
 157    case PIPE_CAP_MAX_FS_TEMPS:
 158       return LP_MAX_TGSI_TEMPS;
 159    case PIPE_CAP_MAX_VS_ADDRS:
 160    case PIPE_CAP_MAX_FS_ADDRS:
 161       return LP_MAX_TGSI_ADDRS;
 162    case PIPE_CAP_MAX_VS_PREDS:
 163    case PIPE_CAP_MAX_FS_PREDS:
 164       return LP_MAX_TGSI_PREDS;
 165    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 166       return 1;
 167    default:
 168       assert(0);
 169       return 0;
 170    }
 171 }
 172
 173
 174 static float
 175 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_cap param)
 176 {
 177    switch (param) {
 178    case PIPE_CAP_MAX_LINE_WIDTH:
 179       /* fall-through */
 180    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 181       return 255.0; /* arbitrary */
 182    case PIPE_CAP_MAX_POINT_WIDTH:
 183       /* fall-through */
 184    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 185       return 255.0; /* arbitrary */
 186    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 187       return 16.0; /* not actually signficant at this time */
 188    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 189       return 16.0; /* arbitrary */
 190    case PIPE_CAP_GUARD_BAND_LEFT:
 191    case PIPE_CAP_GUARD_BAND_TOP:
 192    case PIPE_CAP_GUARD_BAND_RIGHT:
 193    case PIPE_CAP_GUARD_BAND_BOTTOM:
 194       return 0.0;
 195    default:
 196       assert(0);
 197       return 0;
 198    }
 199 }
 200
 201
 202 /**
 203  * Query format support for creating a texture, drawing surface, etc.
 204  * \param format  the format to test
 205  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 206  */
 207 static boolean
 208 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 209                               enum pipe_format format,
 210                               enum pipe_texture_target target,
 211                               unsigned sample_count,
 212                               unsigned bind,
 213                               unsigned geom_flags )
 214 {
 215    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 216    struct sw_winsys *winsys = screen->winsys;
 217    const struct util_format_description *format_desc;
 218
 219    format_desc = util_format_description(format);
 220    if (!format_desc)
 221       return FALSE;
 222
 223    assert(target == PIPE_TEXTURE_1D ||
 224           target == PIPE_TEXTURE_2D ||
 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    lp_jit_screen_cleanup(screen);
 295
 296    if(winsys->destroy)
 297       winsys->destroy(winsys);
 298
 299    FREE(screen);
 300 }
 301
 302
 303
 304 /**
 305  * Create a new pipe_screen object
 306  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 307  */
 308 struct pipe_screen *
 309 llvmpipe_create_screen(struct sw_winsys *winsys)
 310 {
 311    struct llvmpipe_screen *screen;
 312
 313 #ifdef PIPE_ARCH_X86
 314    /* require SSE2 due to LLVM PR6960. */
 315    util_cpu_detect();
 316    if (!util_cpu_caps.has_sse2)
 317        return NULL;
 318 #endif
 319
 320    screen = CALLOC_STRUCT(llvmpipe_screen);
 321
 322 #ifdef DEBUG
 323    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 324 #endif
 325
 326    if (!screen)
 327       return NULL;
 328
 329    screen->winsys = winsys;
 330
 331    screen->base.destroy = llvmpipe_destroy_screen;
 332
 333    screen->base.get_name = llvmpipe_get_name;
 334    screen->base.get_vendor = llvmpipe_get_vendor;
 335    screen->base.get_param = llvmpipe_get_param;
 336    screen->base.get_paramf = llvmpipe_get_paramf;
 337    screen->base.is_format_supported = llvmpipe_is_format_supported;
 338
 339    screen->base.context_create = llvmpipe_create_context;
 340    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 341
 342    llvmpipe_init_screen_resource_funcs(&screen->base);
 343    llvmpipe_init_screen_fence_funcs(&screen->base);
 344
 345    lp_jit_screen_init(screen);
 346
 347 #ifdef PIPE_OS_WINDOWS
 348    /* Multithreading not supported on windows until conditions and barriers are
 349     * properly implemented. */
 350    screen->num_threads = 0;
 351 #else
 352 #ifdef PIPE_OS_EMBEDDED
 353    screen->num_threads = 0;
 354 #else
 355    screen->num_threads = util_cpu_caps.nr_cpus;
 356 #endif
 357    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 358    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 359 #endif
 360
 361    util_format_s3tc_init();
 362
 363    return &screen->base;
 364 }