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 #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    DEBUG_NAMED_VALUE_END
  65 };
  66 #endif
  67
  68
  69 static const char *
  70 llvmpipe_get_vendor(struct pipe_screen *screen)
  71 {
  72    return "VMware, Inc.";
  73 }
  74
  75
  76 static const char *
  77 llvmpipe_get_name(struct pipe_screen *screen)
  78 {
  79    return "llvmpipe";
  80 }
  81
  82
  83 static int
  84 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  85 {
  86    switch (param) {
  87    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  88       return PIPE_MAX_SAMPLERS;
  89    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  90       return PIPE_MAX_VERTEX_SAMPLERS;
  91    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  92       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  93    case PIPE_CAP_NPOT_TEXTURES:
  94       return 1;
  95    case PIPE_CAP_TWO_SIDED_STENCIL:
  96       return 1;
  97    case PIPE_CAP_GLSL:
  98       return 1;
  99    case PIPE_CAP_SM3:
 100       return 1;
 101    case PIPE_CAP_ANISOTROPIC_FILTER:
 102       return 0;
 103    case PIPE_CAP_POINT_SPRITE:
 104       return 1;
 105    case PIPE_CAP_MAX_RENDER_TARGETS:
 106       return PIPE_MAX_COLOR_BUFS;
 107    case PIPE_CAP_OCCLUSION_QUERY:
 108       return 1;
 109    case PIPE_CAP_TIMER_QUERY:
 110       return 0;
 111    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 112       return 1;
 113    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 114       return 1;
 115    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 116       return 1;
 117    case PIPE_CAP_TEXTURE_SWIZZLE:
 118       return 1;
 119    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 120       return LP_MAX_TEXTURE_2D_LEVELS;
 121    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 122       return LP_MAX_TEXTURE_3D_LEVELS;
 123    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 124       return LP_MAX_TEXTURE_2D_LEVELS;
 125    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 126       return 1;
 127    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 128       return 1;
 129    case PIPE_CAP_INDEP_BLEND_ENABLE:
 130       return 1;
 131    case PIPE_CAP_INDEP_BLEND_FUNC:
 132       return 0;
 133    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 134    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 135       return 1;
 136    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 137    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 138       return 0;
 139    case PIPE_CAP_MAX_VS_INSTRUCTIONS:
 140    case PIPE_CAP_MAX_FS_INSTRUCTIONS:
 141    case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
 142    case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
 143    case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
 144    case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
 145    case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
 146    case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
 147       /* There is no limit in number of instructions beyond available memory */
 148       return 32768;
 149    case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
 150    case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
 151       return LP_MAX_TGSI_NESTING;
 152    case PIPE_CAP_MAX_VS_INPUTS:
 153    case PIPE_CAP_MAX_FS_INPUTS:
 154       return PIPE_MAX_ATTRIBS;
 155    case PIPE_CAP_MAX_FS_CONSTS:
 156    case PIPE_CAP_MAX_VS_CONSTS:
 157       /* There is no limit in number of constants beyond available memory */
 158       return 32768;
 159    case PIPE_CAP_MAX_VS_TEMPS:
 160    case PIPE_CAP_MAX_FS_TEMPS:
 161       return LP_MAX_TGSI_TEMPS;
 162    case PIPE_CAP_MAX_VS_ADDRS:
 163    case PIPE_CAP_MAX_FS_ADDRS:
 164       return LP_MAX_TGSI_ADDRS;
 165    case PIPE_CAP_MAX_VS_PREDS:
 166    case PIPE_CAP_MAX_FS_PREDS:
 167       return LP_MAX_TGSI_PREDS;
 168    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 169       return 1;
 170    case PIPE_CAP_GEOMETRY_SHADER4:
 171       return 1;
 172    case PIPE_CAP_DEPTH_CLAMP:
 173       return 0;
 174    default:
 175       assert(0);
 176       return 0;
 177    }
 178 }
 179
 180
 181 static float
 182 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_cap param)
 183 {
 184    switch (param) {
 185    case PIPE_CAP_MAX_LINE_WIDTH:
 186       /* fall-through */
 187    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 188       return 255.0; /* arbitrary */
 189    case PIPE_CAP_MAX_POINT_WIDTH:
 190       /* fall-through */
 191    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 192       return 255.0; /* arbitrary */
 193    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 194       return 16.0; /* not actually signficant at this time */
 195    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 196       return 16.0; /* arbitrary */
 197    case PIPE_CAP_GUARD_BAND_LEFT:
 198    case PIPE_CAP_GUARD_BAND_TOP:
 199    case PIPE_CAP_GUARD_BAND_RIGHT:
 200    case PIPE_CAP_GUARD_BAND_BOTTOM:
 201       return 0.0;
 202    default:
 203       assert(0);
 204       return 0;
 205    }
 206 }
 207
 208
 209 /**
 210  * Query format support for creating a texture, drawing surface, etc.
 211  * \param format  the format to test
 212  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 213  */
 214 static boolean
 215 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 216                               enum pipe_format format,
 217                               enum pipe_texture_target target,
 218                               unsigned sample_count,
 219                               unsigned bind,
 220                               unsigned geom_flags )
 221 {
 222    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 223    struct sw_winsys *winsys = screen->winsys;
 224    const struct util_format_description *format_desc;
 225
 226    format_desc = util_format_description(format);
 227    if (!format_desc)
 228       return FALSE;
 229
 230    assert(target == PIPE_BUFFER ||
 231           target == PIPE_TEXTURE_1D ||
 232           target == PIPE_TEXTURE_2D ||
 233           target == PIPE_TEXTURE_3D ||
 234           target == PIPE_TEXTURE_CUBE);
 235
 236    if (sample_count > 1)
 237       return FALSE;
 238
 239    if (bind & PIPE_BIND_RENDER_TARGET) {
 240       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 241          return FALSE;
 242
 243       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 244          return FALSE;
 245
 246       if (format_desc->block.width != 1 ||
 247           format_desc->block.height != 1)
 248          return FALSE;
 249    }
 250
 251    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 252       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 253          return FALSE;
 254    }
 255
 256    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 257       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 258          return FALSE;
 259
 260       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 261          return FALSE;
 262
 263       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 264       if (format_desc->block.bits != 32)
 265          return FALSE;
 266    }
 267
 268    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 269       return util_format_s3tc_enabled;
 270    }
 271
 272    /*
 273     * Everything else should be supported by u_format.
 274     */
 275    return TRUE;
 276 }
 277
 278
 279
 280
 281 static void
 282 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 283                            struct pipe_surface *surface,
 284                            void *context_private)
 285 {
 286    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 287    struct sw_winsys *winsys = screen->winsys;
 288    struct llvmpipe_resource *texture = llvmpipe_resource(surface->texture);
 289
 290    assert(texture->dt);
 291    if (texture->dt)
 292       winsys->displaytarget_display(winsys, texture->dt, context_private);
 293 }
 294
 295
 296 static void
 297 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 298 {
 299    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 300    struct sw_winsys *winsys = screen->winsys;
 301
 302    if (screen->rast)
 303       lp_rast_destroy(screen->rast);
 304
 305    lp_jit_screen_cleanup(screen);
 306
 307    if(winsys->destroy)
 308       winsys->destroy(winsys);
 309
 310    pipe_mutex_destroy(screen->rast_mutex);
 311
 312    FREE(screen);
 313 }
 314
 315
 316
 317 /**
 318  * Create a new pipe_screen object
 319  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 320  */
 321 struct pipe_screen *
 322 llvmpipe_create_screen(struct sw_winsys *winsys)
 323 {
 324    struct llvmpipe_screen *screen;
 325
 326 #ifdef PIPE_ARCH_X86
 327    /* require SSE2 due to LLVM PR6960. */
 328    util_cpu_detect();
 329    if (!util_cpu_caps.has_sse2)
 330        return NULL;
 331 #endif
 332
 333    screen = CALLOC_STRUCT(llvmpipe_screen);
 334
 335 #ifdef DEBUG
 336    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 337 #endif
 338
 339    if (!screen)
 340       return NULL;
 341
 342    screen->winsys = winsys;
 343
 344    screen->base.destroy = llvmpipe_destroy_screen;
 345
 346    screen->base.get_name = llvmpipe_get_name;
 347    screen->base.get_vendor = llvmpipe_get_vendor;
 348    screen->base.get_param = llvmpipe_get_param;
 349    screen->base.get_paramf = llvmpipe_get_paramf;
 350    screen->base.is_format_supported = llvmpipe_is_format_supported;
 351
 352    screen->base.context_create = llvmpipe_create_context;
 353    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 354
 355    llvmpipe_init_screen_resource_funcs(&screen->base);
 356    llvmpipe_init_screen_fence_funcs(&screen->base);
 357
 358    lp_jit_screen_init(screen);
 359
 360 #ifdef PIPE_OS_EMBEDDED
 361    screen->num_threads = 0;
 362 #else
 363    screen->num_threads = util_cpu_caps.nr_cpus;
 364 #endif
 365    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 366    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 367
 368    screen->rast = lp_rast_create(screen->num_threads);
 369    if (!screen->rast) {
 370       lp_jit_screen_cleanup(screen);
 371       FREE(screen);
 372       return NULL;
 373    }
 374    pipe_mutex_init(screen->rast_mutex);
 375
 376    util_format_s3tc_init();
 377
 378    return &screen->base;
 379 }