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    { "asm",    DEBUG_ASM },
  57    { "setup",  DEBUG_SETUP },
  58    { "rast",   DEBUG_RAST },
  59    { "query",  DEBUG_QUERY },
  60    { "screen", DEBUG_SCREEN },
  61    { "jit",    DEBUG_JIT },
  62    { "show_tiles",    DEBUG_SHOW_TILES },
  63    { "show_subtiles", DEBUG_SHOW_SUBTILES },
  64    { "counters", DEBUG_COUNTERS },
  65    { "nopt", DEBUG_NO_LLVM_OPT },
  66    {NULL, 0}
  67 };
  68 #endif
  69
  70
  71 static const char *
  72 llvmpipe_get_vendor(struct pipe_screen *screen)
  73 {
  74    return "VMware, Inc.";
  75 }
  76
  77
  78 static const char *
  79 llvmpipe_get_name(struct pipe_screen *screen)
  80 {
  81    return "llvmpipe";
  82 }
  83
  84
  85 static int
  86 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  87 {
  88    switch (param) {
  89    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  90       return PIPE_MAX_SAMPLERS;
  91    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  92       return 0;
  93    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  94       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  95    case PIPE_CAP_NPOT_TEXTURES:
  96       return 1;
  97    case PIPE_CAP_TWO_SIDED_STENCIL:
  98       return 1;
  99    case PIPE_CAP_GLSL:
 100       return 1;
 101    case PIPE_CAP_SM3:
 102       return 1;
 103    case PIPE_CAP_ANISOTROPIC_FILTER:
 104       return 0;
 105    case PIPE_CAP_POINT_SPRITE:
 106       return 1;
 107    case PIPE_CAP_MAX_RENDER_TARGETS:
 108       return PIPE_MAX_COLOR_BUFS;
 109    case PIPE_CAP_OCCLUSION_QUERY:
 110       return 1;
 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_MAX_TEXTURE_2D_LEVELS:
 118       return LP_MAX_TEXTURE_2D_LEVELS;
 119    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 120       return LP_MAX_TEXTURE_3D_LEVELS;
 121    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 122       return LP_MAX_TEXTURE_2D_LEVELS;
 123    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 124       return 1;
 125    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 126       return 1;
 127    case PIPE_CAP_INDEP_BLEND_ENABLE:
 128       return 1;
 129    case PIPE_CAP_INDEP_BLEND_FUNC:
 130       return 0;
 131    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 132    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 133       return 1;
 134    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 135    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 136       return 0;
 137    case PIPE_CAP_MAX_VS_INSTRUCTIONS:
 138    case PIPE_CAP_MAX_FS_INSTRUCTIONS:
 139    case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
 140    case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
 141    case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
 142    case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
 143    case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
 144    case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
 145       /* There is no limit in number of instructions beyond available memory */
 146       return 32768;
 147    case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
 148    case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
 149       return LP_MAX_TGSI_NESTING;
 150    case PIPE_CAP_MAX_VS_INPUTS:
 151    case PIPE_CAP_MAX_FS_INPUTS:
 152       return PIPE_MAX_ATTRIBS;
 153    case PIPE_CAP_MAX_FS_CONSTS:
 154    case PIPE_CAP_MAX_VS_CONSTS:
 155       /* There is no limit in number of constants beyond available memory */
 156       return 32768;
 157    case PIPE_CAP_MAX_VS_TEMPS:
 158    case PIPE_CAP_MAX_FS_TEMPS:
 159       return LP_MAX_TGSI_TEMPS;
 160    case PIPE_CAP_MAX_VS_ADDRS:
 161    case PIPE_CAP_MAX_FS_ADDRS:
 162       return LP_MAX_TGSI_ADDRS;
 163    case PIPE_CAP_MAX_VS_PREDS:
 164    case PIPE_CAP_MAX_FS_PREDS:
 165       return LP_MAX_TGSI_PREDS;
 166    default:
 167       assert(0);
 168       return 0;
 169    }
 170 }
 171
 172
 173 static float
 174 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_cap param)
 175 {
 176    switch (param) {
 177    case PIPE_CAP_MAX_LINE_WIDTH:
 178       /* fall-through */
 179    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 180       return 255.0; /* arbitrary */
 181    case PIPE_CAP_MAX_POINT_WIDTH:
 182       /* fall-through */
 183    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 184       return 255.0; /* arbitrary */
 185    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 186       return 16.0; /* not actually signficant at this time */
 187    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 188       return 16.0; /* arbitrary */
 189    default:
 190       assert(0);
 191       return 0;
 192    }
 193 }
 194
 195
 196 /**
 197  * Query format support for creating a texture, drawing surface, etc.
 198  * \param format  the format to test
 199  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 200  */
 201 static boolean
 202 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 203                               enum pipe_format format,
 204                               enum pipe_texture_target target,
 205                               unsigned bind,
 206                               unsigned geom_flags )
 207 {
 208    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 209    struct sw_winsys *winsys = screen->winsys;
 210    const struct util_format_description *format_desc;
 211
 212    format_desc = util_format_description(format);
 213    if (!format_desc)
 214       return FALSE;
 215
 216    assert(target == PIPE_TEXTURE_1D ||
 217           target == PIPE_TEXTURE_2D ||
 218           target == PIPE_TEXTURE_3D ||
 219           target == PIPE_TEXTURE_CUBE);
 220
 221    if (bind & PIPE_BIND_RENDER_TARGET) {
 222       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 223          return FALSE;
 224
 225       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 226          return FALSE;
 227
 228       if (format_desc->block.width != 1 ||
 229           format_desc->block.height != 1)
 230          return FALSE;
 231    }
 232
 233    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 234       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 235          return FALSE;
 236    }
 237
 238    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 239       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 240          return FALSE;
 241
 242       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 243          return FALSE;
 244
 245       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 246       if (format_desc->block.bits != 32)
 247          return FALSE;
 248    }
 249
 250    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 251       return util_format_s3tc_enabled;
 252    }
 253
 254    /*
 255     * Everything else should be supported by u_format.
 256     */
 257    return TRUE;
 258 }
 259
 260
 261
 262
 263 static void
 264 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 265                            struct pipe_surface *surface,
 266                            void *context_private)
 267 {
 268    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 269    struct sw_winsys *winsys = screen->winsys;
 270    struct llvmpipe_resource *texture = llvmpipe_resource(surface->texture);
 271
 272    assert(texture->dt);
 273    if (texture->dt)
 274       winsys->displaytarget_display(winsys, texture->dt, context_private);
 275 }
 276
 277
 278 static void
 279 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 280 {
 281    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 282    struct sw_winsys *winsys = screen->winsys;
 283
 284    lp_jit_screen_cleanup(screen);
 285
 286    if(winsys->destroy)
 287       winsys->destroy(winsys);
 288
 289    FREE(screen);
 290 }
 291
 292
 293
 294 /**
 295  * Create a new pipe_screen object
 296  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 297  */
 298 struct pipe_screen *
 299 llvmpipe_create_screen(struct sw_winsys *winsys)
 300 {
 301    struct llvmpipe_screen *screen;
 302
 303 #ifdef PIPE_ARCH_X86
 304    /* require SSE2 due to LLVM PR6960. */
 305    util_cpu_detect();
 306    if (!util_cpu_caps.has_sse2)
 307        return NULL;
 308 #endif
 309
 310    screen = CALLOC_STRUCT(llvmpipe_screen);
 311
 312 #ifdef DEBUG
 313    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 314 #endif
 315
 316    if (!screen)
 317       return NULL;
 318
 319    screen->winsys = winsys;
 320
 321    screen->base.destroy = llvmpipe_destroy_screen;
 322
 323    screen->base.get_name = llvmpipe_get_name;
 324    screen->base.get_vendor = llvmpipe_get_vendor;
 325    screen->base.get_param = llvmpipe_get_param;
 326    screen->base.get_paramf = llvmpipe_get_paramf;
 327    screen->base.is_format_supported = llvmpipe_is_format_supported;
 328
 329    screen->base.context_create = llvmpipe_create_context;
 330    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 331
 332    llvmpipe_init_screen_resource_funcs(&screen->base);
 333    llvmpipe_init_screen_fence_funcs(&screen->base);
 334
 335    lp_jit_screen_init(screen);
 336
 337 #ifdef PIPE_OS_WINDOWS
 338    /* Multithreading not supported on windows until conditions and barriers are
 339     * properly implemented. */
 340    screen->num_threads = 0;
 341 #else
 342 #ifdef PIPE_OS_EMBEDDED
 343    screen->num_threads = 0;
 344 #else
 345    screen->num_threads = util_cpu_caps.nr_cpus;
 346 #endif
 347    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 348    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 349 #endif
 350
 351    util_format_s3tc_init();
 352
 353    return &screen->base;
 354 }