src/gallium/drivers/llvmpipe/lp_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   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 VMWARE 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_screen.h"
  34 #include "util/u_string.h"
  35 #include "util/u_format_s3tc.h"
  36 #include "pipe/p_defines.h"
  37 #include "pipe/p_screen.h"
  38 #include "draw/draw_context.h"
  39 #include "gallivm/lp_bld_type.h"
  40
  41 #include "os/os_misc.h"
  42 #include "util/os_time.h"
  43 #include "lp_texture.h"
  44 #include "lp_fence.h"
  45 #include "lp_jit.h"
  46 #include "lp_screen.h"
  47 #include "lp_context.h"
  48 #include "lp_debug.h"
  49 #include "lp_public.h"
  50 #include "lp_limits.h"
  51 #include "lp_rast.h"
  52
  53 #include "state_tracker/sw_winsys.h"
  54
  55 #ifdef DEBUG
  56 int LP_DEBUG = 0;
  57
  58 static const struct debug_named_value lp_debug_flags[] = {
  59    { "pipe",   DEBUG_PIPE, NULL },
  60    { "tgsi",   DEBUG_TGSI, NULL },
  61    { "tex",    DEBUG_TEX, NULL },
  62    { "setup",  DEBUG_SETUP, NULL },
  63    { "rast",   DEBUG_RAST, NULL },
  64    { "query",  DEBUG_QUERY, NULL },
  65    { "screen", DEBUG_SCREEN, NULL },
  66    { "counters", DEBUG_COUNTERS, NULL },
  67    { "scene", DEBUG_SCENE, NULL },
  68    { "fence", DEBUG_FENCE, NULL },
  69    { "mem", DEBUG_MEM, NULL },
  70    { "fs", DEBUG_FS, NULL },
  71    DEBUG_NAMED_VALUE_END
  72 };
  73 #endif
  74
  75 int LP_PERF = 0;
  76 static const struct debug_named_value lp_perf_flags[] = {
  77    { "texmem",         PERF_TEX_MEM, NULL },
  78    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  79    { "no_linear",      PERF_NO_LINEAR, NULL },
  80    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  81    { "no_tex",         PERF_NO_TEX, NULL },
  82    { "no_blend",       PERF_NO_BLEND, NULL },
  83    { "no_depth",       PERF_NO_DEPTH, NULL },
  84    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  85    DEBUG_NAMED_VALUE_END
  86 };
  87
  88
  89 static const char *
  90 llvmpipe_get_vendor(struct pipe_screen *screen)
  91 {
  92    return "VMware, Inc.";
  93 }
  94
  95
  96 static const char *
  97 llvmpipe_get_name(struct pipe_screen *screen)
  98 {
  99    static char buf[100];
 100    util_snprintf(buf, sizeof(buf), "llvmpipe (LLVM %u.%u, %u bits)",
 101                  HAVE_LLVM >> 8, HAVE_LLVM & 0xff,
 102                  lp_native_vector_width );
 103    return buf;
 104 }
 105
 106
 107 static int
 108 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 109 {
 110    switch (param) {
 111    case PIPE_CAP_NPOT_TEXTURES:
 112    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 113    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 114       return 1;
 115    case PIPE_CAP_SM3:
 116       return 1;
 117    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 118       return 1;
 119    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 120       return PIPE_MAX_SO_BUFFERS;
 121    case PIPE_CAP_ANISOTROPIC_FILTER:
 122       return 0;
 123    case PIPE_CAP_POINT_SPRITE:
 124       return 1;
 125    case PIPE_CAP_MAX_RENDER_TARGETS:
 126       return PIPE_MAX_COLOR_BUFS;
 127    case PIPE_CAP_OCCLUSION_QUERY:
 128       return 1;
 129    case PIPE_CAP_QUERY_TIME_ELAPSED:
 130       return 0;
 131    case PIPE_CAP_QUERY_TIMESTAMP:
 132       return 1;
 133    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 134       return 1;
 135    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 136    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
 137       return 1;
 138    case PIPE_CAP_TEXTURE_SWIZZLE:
 139       return 1;
 140    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 141       return 0;
 142    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 143       return LP_MAX_TEXTURE_2D_LEVELS;
 144    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 145       return LP_MAX_TEXTURE_3D_LEVELS;
 146    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 147       return LP_MAX_TEXTURE_CUBE_LEVELS;
 148    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 149       return LP_MAX_TEXTURE_ARRAY_LAYERS;
 150    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 151       return 1;
 152    case PIPE_CAP_INDEP_BLEND_ENABLE:
 153       return 1;
 154    case PIPE_CAP_INDEP_BLEND_FUNC:
 155       return 1;
 156    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 157    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 158    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 159       return 1;
 160    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 161    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
 162       return 0;
 163    case PIPE_CAP_PRIMITIVE_RESTART:
 164       return 1;
 165    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 166       return 1;
 167    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 168       return 1;
 169    case PIPE_CAP_TGSI_INSTANCEID:
 170    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 171    case PIPE_CAP_START_INSTANCE:
 172       return 1;
 173    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 174       return 0;
 175    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 176       return 1;
 177    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 178    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 179       return 1;
 180    /* this is a lie could support arbitrary large offsets */
 181    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 182    case PIPE_CAP_MIN_TEXEL_OFFSET:
 183       return -32;
 184    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 185    case PIPE_CAP_MAX_TEXEL_OFFSET:
 186       return 31;
 187    case PIPE_CAP_CONDITIONAL_RENDER:
 188       return 1;
 189    case PIPE_CAP_TEXTURE_BARRIER:
 190       return 0;
 191    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 192    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 193       return 16*4;
 194    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 195    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 196       return 1024;
 197    case PIPE_CAP_MAX_VERTEX_STREAMS:
 198       return 1;
 199    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 200       return 2048;
 201    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 202    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 203       return 1;
 204    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 205       return 0;
 206    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 207    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 208       return 1;
 209    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 210       return 330;
 211    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 212       return 140;
 213    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 214       return 0;
 215    case PIPE_CAP_COMPUTE:
 216       return 0;
 217    case PIPE_CAP_USER_VERTEX_BUFFERS:
 218       return 1;
 219    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 220    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 221    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 222    case PIPE_CAP_TGSI_TEXCOORD:
 223       return 0;
 224    case PIPE_CAP_DRAW_INDIRECT:
 225       return 1;
 226
 227    case PIPE_CAP_CUBE_MAP_ARRAY:
 228       return 1;
 229    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 230       return 16;
 231    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 232       return 0;
 233    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 234       return 64;
 235    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 236       return 1;
 237    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 238       return 65536;
 239    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 240       return 1;
 241    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 242       return 0;
 243    case PIPE_CAP_MAX_VIEWPORTS:
 244       return PIPE_MAX_VIEWPORTS;
 245    case PIPE_CAP_ENDIANNESS:
 246       return PIPE_ENDIAN_NATIVE;
 247    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 248       return 1;
 249    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 250       return 1;
 251    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 252       return 4;
 253    case PIPE_CAP_TEXTURE_GATHER_SM5:
 254    case PIPE_CAP_SAMPLE_SHADING:
 255    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 256       return 0;
 257    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 258       return 1;
 259    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 260    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 261       return 0;
 262    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 263       return 1;
 264    case PIPE_CAP_FAKE_SW_MSAA:
 265       return 1;
 266    case PIPE_CAP_TEXTURE_QUERY_LOD:
 267    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 268    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 269    case PIPE_CAP_DOUBLES:
 270    case PIPE_CAP_INT64:
 271    case PIPE_CAP_INT64_DIVMOD:
 272    case PIPE_CAP_QUERY_SO_OVERFLOW:
 273       return 1;
 274
 275    case PIPE_CAP_VENDOR_ID:
 276       return 0xFFFFFFFF;
 277    case PIPE_CAP_DEVICE_ID:
 278       return 0xFFFFFFFF;
 279    case PIPE_CAP_ACCELERATED:
 280       return 0;
 281    case PIPE_CAP_VIDEO_MEMORY: {
 282       /* XXX: Do we want to return the full amount fo system memory ? */
 283       uint64_t system_memory;
 284
 285       if (!os_get_total_physical_memory(&system_memory))
 286          return 0;
 287
 288       if (sizeof(void *) == 4)
 289          /* Cap to 2 GB on 32 bits system. We do this because llvmpipe does
 290           * eat application memory, which is quite limited on 32 bits. App
 291           * shouldn't expect too much available memory. */
 292          system_memory = MIN2(system_memory, 2048 << 20);
 293
 294       return (int)(system_memory >> 20);
 295    }
 296    case PIPE_CAP_UMA:
 297       return 0;
 298    case PIPE_CAP_CLIP_HALFZ:
 299       return 1;
 300    case PIPE_CAP_VERTEXID_NOBASE:
 301       return 0;
 302    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 303    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 304    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 305       return 1;
 306    case PIPE_CAP_CULL_DISTANCE:
 307       return 1;
 308    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 309       return 1;
 310    case PIPE_CAP_CLEAR_TEXTURE:
 311       return 1;
 312    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 313    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 314    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 315    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 316    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 317    case PIPE_CAP_TGSI_TXQS:
 318    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 319    case PIPE_CAP_SHAREABLE_SHADERS:
 320    case PIPE_CAP_DRAW_PARAMETERS:
 321    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 322    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 323    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 324    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 325    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 326    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 327    case PIPE_CAP_INVALIDATE_BUFFER:
 328    case PIPE_CAP_GENERATE_MIPMAP:
 329    case PIPE_CAP_STRING_MARKER:
 330    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 331    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 332    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 333    case PIPE_CAP_QUERY_MEMORY_INFO:
 334    case PIPE_CAP_PCI_GROUP:
 335    case PIPE_CAP_PCI_BUS:
 336    case PIPE_CAP_PCI_DEVICE:
 337    case PIPE_CAP_PCI_FUNCTION:
 338    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 339    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 340    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 341    case PIPE_CAP_TGSI_VOTE:
 342    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 343    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 344    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 345    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 346    case PIPE_CAP_NATIVE_FENCE_FD:
 347    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 348    case PIPE_CAP_TGSI_FS_FBFETCH:
 349    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 350    case PIPE_CAP_TGSI_CLOCK:
 351    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 352    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 353    case PIPE_CAP_TGSI_BALLOT:
 354    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 355    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 356    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 357    case PIPE_CAP_POST_DEPTH_COVERAGE:
 358    case PIPE_CAP_BINDLESS_TEXTURE:
 359    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 360    case PIPE_CAP_MEMOBJ:
 361    case PIPE_CAP_LOAD_CONSTBUF:
 362    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 363    case PIPE_CAP_TILE_RASTER_ORDER:
 364    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 365    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 366    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 367    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 368    case PIPE_CAP_FENCE_SIGNAL:
 369    case PIPE_CAP_CONSTBUF0_FLAGS:
 370    case PIPE_CAP_PACKED_UNIFORMS:
 371    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 372    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 373    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 374    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 375    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 376    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 377    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 378       return 0;
 379    case PIPE_CAP_MAX_GS_INVOCATIONS:
 380       return 32;
 381    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 382       return 1 << 27;
 383
 384    default:
 385       return u_pipe_screen_get_param_defaults(screen, param);
 386    }
 387 }
 388
 389 static int
 390 llvmpipe_get_shader_param(struct pipe_screen *screen,
 391                           enum pipe_shader_type shader,
 392                           enum pipe_shader_cap param)
 393 {
 394    switch(shader)
 395    {
 396    case PIPE_SHADER_FRAGMENT:
 397       switch (param) {
 398       default:
 399          return gallivm_get_shader_param(param);
 400       }
 401    case PIPE_SHADER_VERTEX:
 402    case PIPE_SHADER_GEOMETRY:
 403       switch (param) {
 404       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 405          /* At this time, the draw module and llvmpipe driver only
 406           * support vertex shader texture lookups when LLVM is enabled in
 407           * the draw module.
 408           */
 409          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 410             return PIPE_MAX_SAMPLERS;
 411          else
 412             return 0;
 413       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 414          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 415             return PIPE_MAX_SHADER_SAMPLER_VIEWS;
 416          else
 417             return 0;
 418       default:
 419          return draw_get_shader_param(shader, param);
 420       }
 421    default:
 422       return 0;
 423    }
 424 }
 425
 426 static float
 427 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 428 {
 429    switch (param) {
 430    case PIPE_CAPF_MAX_LINE_WIDTH:
 431       /* fall-through */
 432    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 433       return 255.0; /* arbitrary */
 434    case PIPE_CAPF_MAX_POINT_WIDTH:
 435       /* fall-through */
 436    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 437       return 255.0; /* arbitrary */
 438    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 439       return 16.0; /* not actually signficant at this time */
 440    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 441       return 16.0; /* arbitrary */
 442    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 443       return 0.0;
 444    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 445       return 0.0;
 446    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 447       return 0.0;
 448    }
 449    /* should only get here on unhandled cases */
 450    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 451    return 0.0;
 452 }
 453
 454
 455 /**
 456  * Query format support for creating a texture, drawing surface, etc.
 457  * \param format  the format to test
 458  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 459  */
 460 static boolean
 461 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 462                               enum pipe_format format,
 463                               enum pipe_texture_target target,
 464                               unsigned sample_count,
 465                               unsigned storage_sample_count,
 466                               unsigned bind)
 467 {
 468    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 469    struct sw_winsys *winsys = screen->winsys;
 470    const struct util_format_description *format_desc;
 471
 472    format_desc = util_format_description(format);
 473    if (!format_desc)
 474       return FALSE;
 475
 476    assert(target == PIPE_BUFFER ||
 477           target == PIPE_TEXTURE_1D ||
 478           target == PIPE_TEXTURE_1D_ARRAY ||
 479           target == PIPE_TEXTURE_2D ||
 480           target == PIPE_TEXTURE_2D_ARRAY ||
 481           target == PIPE_TEXTURE_RECT ||
 482           target == PIPE_TEXTURE_3D ||
 483           target == PIPE_TEXTURE_CUBE ||
 484           target == PIPE_TEXTURE_CUBE_ARRAY);
 485
 486    if (sample_count > 1)
 487       return FALSE;
 488
 489    if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 490       return false;
 491
 492    if (bind & PIPE_BIND_RENDER_TARGET) {
 493       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
 494          /* this is a lie actually other formats COULD exist where we would fail */
 495          if (format_desc->nr_channels < 3)
 496             return FALSE;
 497       }
 498       else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 499          return FALSE;
 500
 501       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN &&
 502           format != PIPE_FORMAT_R11G11B10_FLOAT)
 503          return FALSE;
 504
 505       assert(format_desc->block.width == 1);
 506       assert(format_desc->block.height == 1);
 507
 508       if (format_desc->is_mixed)
 509          return FALSE;
 510
 511       if (!format_desc->is_array && !format_desc->is_bitmask &&
 512           format != PIPE_FORMAT_R11G11B10_FLOAT)
 513          return FALSE;
 514    }
 515
 516    if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
 517        ((bind & PIPE_BIND_DISPLAY_TARGET) == 0)) {
 518       /* Disable all 3-channel formats, where channel size != 32 bits.
 519        * In some cases we run into crashes (in generate_unswizzled_blend()),
 520        * for 3-channel RGB16 variants, there was an apparent LLVM bug.
 521        * In any case, disabling the shallower 3-channel formats avoids a
 522        * number of issues with GL_ARB_copy_image support.
 523        */
 524       if (format_desc->is_array &&
 525           format_desc->nr_channels == 3 &&
 526           format_desc->block.bits != 96) {
 527          return FALSE;
 528       }
 529    }
 530
 531    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 532       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 533          return FALSE;
 534    }
 535
 536    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 537       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 538          return FALSE;
 539
 540       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 541          return FALSE;
 542
 543       /* TODO: Support stencil-only formats */
 544       if (format_desc->swizzle[0] == PIPE_SWIZZLE_NONE) {
 545          return FALSE;
 546       }
 547    }
 548
 549    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC) {
 550       /* Software decoding is not hooked up. */
 551       return FALSE;
 552    }
 553
 554    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
 555        format != PIPE_FORMAT_ETC1_RGB8)
 556       return FALSE;
 557
 558    /*
 559     * Everything can be supported by u_format
 560     * (those without fetch_rgba_float might be not but shouldn't hit that)
 561     */
 562
 563    return TRUE;
 564 }
 565
 566
 567
 568
 569 static void
 570 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 571                            struct pipe_resource *resource,
 572                            unsigned level, unsigned layer,
 573                            void *context_private,
 574                            struct pipe_box *sub_box)
 575 {
 576    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 577    struct sw_winsys *winsys = screen->winsys;
 578    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 579
 580    assert(texture->dt);
 581    if (texture->dt)
 582       winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
 583 }
 584
 585 static void
 586 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 587 {
 588    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 589    struct sw_winsys *winsys = screen->winsys;
 590
 591    if (screen->rast)
 592       lp_rast_destroy(screen->rast);
 593
 594    lp_jit_screen_cleanup(screen);
 595
 596    if(winsys->destroy)
 597       winsys->destroy(winsys);
 598
 599    mtx_destroy(&screen->rast_mutex);
 600
 601    FREE(screen);
 602 }
 603
 604
 605
 606
 607 /**
 608  * Fence reference counting.
 609  */
 610 static void
 611 llvmpipe_fence_reference(struct pipe_screen *screen,
 612                          struct pipe_fence_handle **ptr,
 613                          struct pipe_fence_handle *fence)
 614 {
 615    struct lp_fence **old = (struct lp_fence **) ptr;
 616    struct lp_fence *f = (struct lp_fence *) fence;
 617
 618    lp_fence_reference(old, f);
 619 }
 620
 621
 622 /**
 623  * Wait for the fence to finish.
 624  */
 625 static boolean
 626 llvmpipe_fence_finish(struct pipe_screen *screen,
 627                       struct pipe_context *ctx,
 628                       struct pipe_fence_handle *fence_handle,
 629                       uint64_t timeout)
 630 {
 631    struct lp_fence *f = (struct lp_fence *) fence_handle;
 632
 633    if (!timeout)
 634       return lp_fence_signalled(f);
 635
 636    lp_fence_wait(f);
 637    return TRUE;
 638 }
 639
 640 static uint64_t
 641 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 642 {
 643    return os_time_get_nano();
 644 }
 645
 646 /**
 647  * Create a new pipe_screen object
 648  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 649  */
 650 struct pipe_screen *
 651 llvmpipe_create_screen(struct sw_winsys *winsys)
 652 {
 653    struct llvmpipe_screen *screen;
 654
 655    util_cpu_detect();
 656
 657 #ifdef DEBUG
 658    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 659 #endif
 660
 661    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 662
 663    screen = CALLOC_STRUCT(llvmpipe_screen);
 664    if (!screen)
 665       return NULL;
 666
 667    if (!lp_jit_screen_init(screen)) {
 668       FREE(screen);
 669       return NULL;
 670    }
 671
 672    screen->winsys = winsys;
 673
 674    screen->base.destroy = llvmpipe_destroy_screen;
 675
 676    screen->base.get_name = llvmpipe_get_name;
 677    screen->base.get_vendor = llvmpipe_get_vendor;
 678    screen->base.get_device_vendor = llvmpipe_get_vendor; // TODO should be the CPU vendor
 679    screen->base.get_param = llvmpipe_get_param;
 680    screen->base.get_shader_param = llvmpipe_get_shader_param;
 681    screen->base.get_paramf = llvmpipe_get_paramf;
 682    screen->base.is_format_supported = llvmpipe_is_format_supported;
 683
 684    screen->base.context_create = llvmpipe_create_context;
 685    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 686    screen->base.fence_reference = llvmpipe_fence_reference;
 687    screen->base.fence_finish = llvmpipe_fence_finish;
 688
 689    screen->base.get_timestamp = llvmpipe_get_timestamp;
 690
 691    llvmpipe_init_screen_resource_funcs(&screen->base);
 692
 693    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 694 #ifdef PIPE_SUBSYSTEM_EMBEDDED
 695    screen->num_threads = 0;
 696 #endif
 697    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 698    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 699
 700    screen->rast = lp_rast_create(screen->num_threads);
 701    if (!screen->rast) {
 702       lp_jit_screen_cleanup(screen);
 703       FREE(screen);
 704       return NULL;
 705    }
 706    (void) mtx_init(&screen->rast_mutex, mtx_plain);
 707
 708    return &screen->base;
 709 }