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_SM3:
 101       return 1;
 102    case PIPE_CAP_ANISOTROPIC_FILTER:
 103       return 0;
 104    case PIPE_CAP_POINT_SPRITE:
 105       return 1;
 106    case PIPE_CAP_MAX_RENDER_TARGETS:
 107       return PIPE_MAX_COLOR_BUFS;
 108    case PIPE_CAP_OCCLUSION_QUERY:
 109       return 1;
 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 0;
 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    default:
 137       return 0;
 138    }
 139 }
 140
 141
 142 static float
 143 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 144 {
 145    switch (param) {
 146    case PIPE_CAP_MAX_LINE_WIDTH:
 147       /* fall-through */
 148    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 149       return 255.0; /* arbitrary */
 150    case PIPE_CAP_MAX_POINT_WIDTH:
 151       /* fall-through */
 152    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 153       return 255.0; /* arbitrary */
 154    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 155       return 16.0; /* not actually signficant at this time */
 156    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 157       return 16.0; /* arbitrary */
 158    default:
 159       return 0;
 160    }
 161 }
 162
 163
 164 /**
 165  * Query format support for creating a texture, drawing surface, etc.
 166  * \param format  the format to test
 167  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 168  */
 169 static boolean
 170 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 171                               enum pipe_format format,
 172                               enum pipe_texture_target target,
 173                               unsigned bind,
 174                               unsigned geom_flags )
 175 {
 176    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 177    struct sw_winsys *winsys = screen->winsys;
 178    const struct util_format_description *format_desc;
 179
 180    format_desc = util_format_description(format);
 181    if (!format_desc)
 182       return FALSE;
 183
 184    assert(target == PIPE_TEXTURE_1D ||
 185           target == PIPE_TEXTURE_2D ||
 186           target == PIPE_TEXTURE_3D ||
 187           target == PIPE_TEXTURE_CUBE);
 188
 189    if (bind & PIPE_BIND_RENDER_TARGET) {
 190       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 191          return FALSE;
 192
 193       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 194          return FALSE;
 195
 196       if (format_desc->block.width != 1 ||
 197           format_desc->block.height != 1)
 198          return FALSE;
 199    }
 200
 201    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 202       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 203          return FALSE;
 204    }
 205
 206    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 207       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 208          return FALSE;
 209
 210       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 211          return FALSE;
 212
 213       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 214       if (format_desc->block.bits != 32)
 215          return FALSE;
 216    }
 217
 218    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 219       return util_format_s3tc_enabled;
 220    }
 221
 222    /*
 223     * Everything else should be supported by u_format.
 224     */
 225    return TRUE;
 226 }
 227
 228
 229
 230
 231 static void
 232 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 233                            struct pipe_surface *surface,
 234                            void *context_private)
 235 {
 236    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 237    struct sw_winsys *winsys = screen->winsys;
 238    struct llvmpipe_resource *texture = llvmpipe_resource(surface->texture);
 239
 240    assert(texture->dt);
 241    if (texture->dt)
 242       winsys->displaytarget_display(winsys, texture->dt, context_private);
 243 }
 244
 245
 246 static void
 247 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 248 {
 249    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 250    struct sw_winsys *winsys = screen->winsys;
 251
 252    lp_jit_screen_cleanup(screen);
 253
 254    if(winsys->destroy)
 255       winsys->destroy(winsys);
 256
 257    FREE(screen);
 258 }
 259
 260
 261
 262 /**
 263  * Create a new pipe_screen object
 264  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 265  */
 266 struct pipe_screen *
 267 llvmpipe_create_screen(struct sw_winsys *winsys)
 268 {
 269    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 270
 271 #ifdef DEBUG
 272    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 273 #endif
 274
 275    if (!screen)
 276       return NULL;
 277
 278    screen->winsys = winsys;
 279
 280    screen->base.destroy = llvmpipe_destroy_screen;
 281
 282    screen->base.get_name = llvmpipe_get_name;
 283    screen->base.get_vendor = llvmpipe_get_vendor;
 284    screen->base.get_param = llvmpipe_get_param;
 285    screen->base.get_paramf = llvmpipe_get_paramf;
 286    screen->base.is_format_supported = llvmpipe_is_format_supported;
 287
 288    screen->base.context_create = llvmpipe_create_context;
 289    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 290
 291    llvmpipe_init_screen_resource_funcs(&screen->base);
 292    llvmpipe_init_screen_fence_funcs(&screen->base);
 293
 294    lp_jit_screen_init(screen);
 295
 296 #ifdef PIPE_OS_WINDOWS
 297    /* Multithreading not supported on windows until conditions and barriers are
 298     * properly implemented. */
 299    screen->num_threads = 0;
 300 #else
 301 #ifdef PIPE_OS_EMBEDDED
 302    screen->num_threads = 0;
 303 #else
 304    screen->num_threads = util_cpu_caps.nr_cpus;
 305 #endif
 306    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 307    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 308 #endif
 309
 310    util_format_s3tc_init();
 311
 312    return &screen->base;
 313 }