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