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 "lp_texture.h"
  38 #include "lp_fence.h"
  39 #include "lp_jit.h"
  40 #include "lp_screen.h"
  41 #include "lp_context.h"
  42 #include "lp_debug.h"
  43 #include "lp_public.h"
  44 #include "lp_limits.h"
  45
  46 #include "state_tracker/sw_winsys.h"
  47
  48 #ifdef DEBUG
  49 int LP_DEBUG = 0;
  50
  51 static const struct debug_named_value lp_debug_flags[] = {
  52    { "pipe",   DEBUG_PIPE },
  53    { "tgsi",   DEBUG_TGSI },
  54    { "tex",    DEBUG_TEX },
  55    { "asm",    DEBUG_ASM },
  56    { "setup",  DEBUG_SETUP },
  57    { "rast",   DEBUG_RAST },
  58    { "query",  DEBUG_QUERY },
  59    { "screen", DEBUG_SCREEN },
  60    { "jit",    DEBUG_JIT },
  61    { "show_tiles",    DEBUG_SHOW_TILES },
  62    { "show_subtiles", DEBUG_SHOW_SUBTILES },
  63    { "counters", DEBUG_COUNTERS },
  64    { "nopt", DEBUG_NO_LLVM_OPT },
  65    {NULL, 0}
  66 };
  67 #endif
  68
  69
  70 static const char *
  71 llvmpipe_get_vendor(struct pipe_screen *screen)
  72 {
  73    return "VMware, Inc.";
  74 }
  75
  76
  77 static const char *
  78 llvmpipe_get_name(struct pipe_screen *screen)
  79 {
  80    return "llvmpipe";
  81 }
  82
  83
  84 static int
  85 llvmpipe_get_param(struct pipe_screen *screen, int param)
  86 {
  87    switch (param) {
  88    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  89       return PIPE_MAX_SAMPLERS;
  90    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  91       return 0;
  92    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  93       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  94    case PIPE_CAP_NPOT_TEXTURES:
  95       return 1;
  96    case PIPE_CAP_TWO_SIDED_STENCIL:
  97       return 1;
  98    case PIPE_CAP_GLSL:
  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 0;
 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    default:
 135       return 0;
 136    }
 137 }
 138
 139
 140 static float
 141 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 142 {
 143    switch (param) {
 144    case PIPE_CAP_MAX_LINE_WIDTH:
 145       /* fall-through */
 146    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 147       return 255.0; /* arbitrary */
 148    case PIPE_CAP_MAX_POINT_WIDTH:
 149       /* fall-through */
 150    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 151       return 255.0; /* arbitrary */
 152    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 153       return 16.0; /* not actually signficant at this time */
 154    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 155       return 16.0; /* arbitrary */
 156    default:
 157       return 0;
 158    }
 159 }
 160
 161
 162 /**
 163  * Query format support for creating a texture, drawing surface, etc.
 164  * \param format  the format to test
 165  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 166  */
 167 static boolean
 168 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 169                               enum pipe_format format,
 170                               enum pipe_texture_target target,
 171                               unsigned bind,
 172                               unsigned geom_flags )
 173 {
 174    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 175    struct sw_winsys *winsys = screen->winsys;
 176    const struct util_format_description *format_desc;
 177
 178    format_desc = util_format_description(format);
 179    if (!format_desc)
 180       return FALSE;
 181
 182    assert(target == PIPE_TEXTURE_1D ||
 183           target == PIPE_TEXTURE_2D ||
 184           target == PIPE_TEXTURE_3D ||
 185           target == PIPE_TEXTURE_CUBE);
 186
 187    if (bind & PIPE_BIND_RENDER_TARGET) {
 188       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 189          return FALSE;
 190
 191       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 192          return FALSE;
 193
 194       if (format_desc->block.width != 1 ||
 195           format_desc->block.height != 1)
 196          return FALSE;
 197    }
 198
 199    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 200       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 201          return FALSE;
 202    }
 203
 204    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 205       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 206          return FALSE;
 207
 208       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 209          return FALSE;
 210
 211       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 212       if (format_desc->block.bits != 32)
 213          return FALSE;
 214    }
 215
 216    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 217       return util_format_s3tc_enabled;
 218    }
 219
 220    /*
 221     * Everything else should be supported by u_format.
 222     */
 223    return TRUE;
 224 }
 225
 226
 227
 228
 229 static void
 230 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 231                            struct pipe_surface *surface,
 232                            void *context_private)
 233 {
 234    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 235    struct sw_winsys *winsys = screen->winsys;
 236    struct llvmpipe_resource *texture = llvmpipe_resource(surface->texture);
 237
 238    assert(texture->dt);
 239    if (texture->dt)
 240       winsys->displaytarget_display(winsys, texture->dt, context_private);
 241 }
 242
 243
 244 static void
 245 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 246 {
 247    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 248    struct sw_winsys *winsys = screen->winsys;
 249
 250    lp_jit_screen_cleanup(screen);
 251
 252    if(winsys->destroy)
 253       winsys->destroy(winsys);
 254
 255    FREE(screen);
 256 }
 257
 258
 259
 260 /**
 261  * Create a new pipe_screen object
 262  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 263  */
 264 struct pipe_screen *
 265 llvmpipe_create_screen(struct sw_winsys *winsys)
 266 {
 267    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 268
 269 #ifdef DEBUG
 270    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 271 #endif
 272
 273    if (!screen)
 274       return NULL;
 275
 276    screen->winsys = winsys;
 277
 278    screen->base.destroy = llvmpipe_destroy_screen;
 279
 280    screen->base.get_name = llvmpipe_get_name;
 281    screen->base.get_vendor = llvmpipe_get_vendor;
 282    screen->base.get_param = llvmpipe_get_param;
 283    screen->base.get_paramf = llvmpipe_get_paramf;
 284    screen->base.is_format_supported = llvmpipe_is_format_supported;
 285
 286    screen->base.context_create = llvmpipe_create_context;
 287    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 288
 289    llvmpipe_init_screen_resource_funcs(&screen->base);
 290    llvmpipe_init_screen_fence_funcs(&screen->base);
 291
 292    lp_jit_screen_init(screen);
 293
 294 #ifdef PIPE_OS_WINDOWS
 295    /* Multithreading not supported on windows until conditions and barriers are
 296     * properly implemented. */
 297    screen->num_threads = 0;
 298 #else
 299 #ifdef PIPE_OS_EMBEDDED
 300    screen->num_threads = 0;
 301 #else
 302    screen->num_threads = util_cpu_caps.nr_cpus;
 303 #endif
 304    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 305    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 306 #endif
 307
 308    util_format_s3tc_init();
 309
 310    return &screen->base;
 311 }