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/format/u_format.h"
  33 #include "util/u_screen.h"
  34 #include "util/u_string.h"
  35 #include "util/format/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 "util/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 #include "lp_cs_tpool.h"
  53
  54 #include "state_tracker/sw_winsys.h"
  55
  56 #ifdef DEBUG
  57 int LP_DEBUG = 0;
  58
  59 static const struct debug_named_value lp_debug_flags[] = {
  60    { "pipe",   DEBUG_PIPE, NULL },
  61    { "tgsi",   DEBUG_TGSI, NULL },
  62    { "tex",    DEBUG_TEX, NULL },
  63    { "setup",  DEBUG_SETUP, NULL },
  64    { "rast",   DEBUG_RAST, NULL },
  65    { "query",  DEBUG_QUERY, NULL },
  66    { "screen", DEBUG_SCREEN, NULL },
  67    { "counters", DEBUG_COUNTERS, NULL },
  68    { "scene", DEBUG_SCENE, NULL },
  69    { "fence", DEBUG_FENCE, NULL },
  70    { "mem", DEBUG_MEM, NULL },
  71    { "fs", DEBUG_FS, NULL },
  72    { "cs", DEBUG_CS, NULL },
  73    DEBUG_NAMED_VALUE_END
  74 };
  75 #endif
  76
  77 int LP_PERF = 0;
  78 static const struct debug_named_value lp_perf_flags[] = {
  79    { "texmem",         PERF_TEX_MEM, NULL },
  80    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  81    { "no_linear",      PERF_NO_LINEAR, NULL },
  82    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  83    { "no_tex",         PERF_NO_TEX, NULL },
  84    { "no_blend",       PERF_NO_BLEND, NULL },
  85    { "no_depth",       PERF_NO_DEPTH, NULL },
  86    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  87    DEBUG_NAMED_VALUE_END
  88 };
  89
  90
  91 static const char *
  92 llvmpipe_get_vendor(struct pipe_screen *screen)
  93 {
  94    return "VMware, Inc.";
  95 }
  96
  97
  98 static const char *
  99 llvmpipe_get_name(struct pipe_screen *screen)
 100 {
 101    static char buf[100];
 102    snprintf(buf, sizeof(buf), "llvmpipe (LLVM " MESA_LLVM_VERSION_STRING ", %u bits)",
 103             lp_native_vector_width );
 104    return buf;
 105 }
 106
 107
 108 static int
 109 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 110 {
 111    switch (param) {
 112    case PIPE_CAP_NPOT_TEXTURES:
 113    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 114    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 115       return 1;
 116    case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
 117    case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
 118    case PIPE_CAP_VERTEX_SHADER_SATURATE:
 119       return 1;
 120    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 121       return 1;
 122    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 123       return PIPE_MAX_SO_BUFFERS;
 124    case PIPE_CAP_ANISOTROPIC_FILTER:
 125       return 0;
 126    case PIPE_CAP_POINT_SPRITE:
 127       return 1;
 128    case PIPE_CAP_MAX_RENDER_TARGETS:
 129       return PIPE_MAX_COLOR_BUFS;
 130    case PIPE_CAP_OCCLUSION_QUERY:
 131       return 1;
 132    case PIPE_CAP_QUERY_TIME_ELAPSED:
 133       return 0;
 134    case PIPE_CAP_QUERY_TIMESTAMP:
 135       return 1;
 136    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 137       return 1;
 138    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 139    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
 140       return 1;
 141    case PIPE_CAP_TEXTURE_SWIZZLE:
 142       return 1;
 143    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 144    case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
 145       return 0;
 146    case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
 147       return 1 << (LP_MAX_TEXTURE_2D_LEVELS - 1);
 148    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 149       return LP_MAX_TEXTURE_3D_LEVELS;
 150    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 151       return LP_MAX_TEXTURE_CUBE_LEVELS;
 152    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 153       return LP_MAX_TEXTURE_ARRAY_LAYERS;
 154    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 155       return 1;
 156    case PIPE_CAP_INDEP_BLEND_ENABLE:
 157       return 1;
 158    case PIPE_CAP_INDEP_BLEND_FUNC:
 159       return 1;
 160    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 161    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 162    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 163       return 1;
 164    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 165    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
 166       return 0;
 167    case PIPE_CAP_PRIMITIVE_RESTART:
 168       return 1;
 169    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 170       return 1;
 171    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 172       return 1;
 173    case PIPE_CAP_TGSI_INSTANCEID:
 174    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 175    case PIPE_CAP_START_INSTANCE:
 176       return 1;
 177    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 178       return 0;
 179    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 180       return 1;
 181    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 182    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 183       return 1;
 184    /* this is a lie could support arbitrary large offsets */
 185    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 186    case PIPE_CAP_MIN_TEXEL_OFFSET:
 187       return -32;
 188    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 189    case PIPE_CAP_MAX_TEXEL_OFFSET:
 190       return 31;
 191    case PIPE_CAP_CONDITIONAL_RENDER:
 192       return 1;
 193    case PIPE_CAP_TEXTURE_BARRIER:
 194       return 0;
 195    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 196    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 197       return 16*4;
 198    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 199    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 200       return 1024;
 201    case PIPE_CAP_MAX_VERTEX_STREAMS:
 202       return 1;
 203    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 204       return 2048;
 205    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 206    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 207       return 1;
 208    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 209       return 0;
 210    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 211    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 212       return 1;
 213    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 214       return 330;
 215    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 216       return 140;
 217    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 218       return 0;
 219    case PIPE_CAP_COMPUTE:
 220       return GALLIVM_HAVE_CORO;
 221    case PIPE_CAP_USER_VERTEX_BUFFERS:
 222       return 1;
 223    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 224    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 225    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 226    case PIPE_CAP_TGSI_TEXCOORD:
 227       return 0;
 228    case PIPE_CAP_DRAW_INDIRECT:
 229       return 1;
 230
 231    case PIPE_CAP_CUBE_MAP_ARRAY:
 232       return 1;
 233    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 234       return 16;
 235    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 236       return 0;
 237    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 238       return 64;
 239    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 240       return 1;
 241    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 242       return 65536;
 243    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 244       return 16;
 245    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 246       return 0;
 247    case PIPE_CAP_MAX_VIEWPORTS:
 248       return PIPE_MAX_VIEWPORTS;
 249    case PIPE_CAP_ENDIANNESS:
 250       return PIPE_ENDIAN_NATIVE;
 251    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 252       return 1;
 253    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 254       return 1;
 255    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 256       return 4;
 257    case PIPE_CAP_TEXTURE_GATHER_SM5:
 258    case PIPE_CAP_SAMPLE_SHADING:
 259    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 260       return 0;
 261    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 262       return 1;
 263    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 264    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 265       return 0;
 266    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 267       return 1;
 268    case PIPE_CAP_FAKE_SW_MSAA:
 269       return 1;
 270    case PIPE_CAP_TEXTURE_QUERY_LOD:
 271    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 272    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 273    case PIPE_CAP_DOUBLES:
 274    case PIPE_CAP_INT64:
 275    case PIPE_CAP_INT64_DIVMOD:
 276    case PIPE_CAP_QUERY_SO_OVERFLOW:
 277    case PIPE_CAP_TGSI_DIV:
 278       return 1;
 279
 280    case PIPE_CAP_VENDOR_ID:
 281       return 0xFFFFFFFF;
 282    case PIPE_CAP_DEVICE_ID:
 283       return 0xFFFFFFFF;
 284    case PIPE_CAP_ACCELERATED:
 285       return 0;
 286    case PIPE_CAP_VIDEO_MEMORY: {
 287       /* XXX: Do we want to return the full amount fo system memory ? */
 288       uint64_t system_memory;
 289
 290       if (!os_get_total_physical_memory(&system_memory))
 291          return 0;
 292
 293       if (sizeof(void *) == 4)
 294          /* Cap to 2 GB on 32 bits system. We do this because llvmpipe does
 295           * eat application memory, which is quite limited on 32 bits. App
 296           * shouldn't expect too much available memory. */
 297          system_memory = MIN2(system_memory, 2048 << 20);
 298
 299       return (int)(system_memory >> 20);
 300    }
 301    case PIPE_CAP_UMA:
 302       return 0;
 303    case PIPE_CAP_CLIP_HALFZ:
 304       return 1;
 305    case PIPE_CAP_VERTEXID_NOBASE:
 306       return 0;
 307    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 308    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 309    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 310       return 1;
 311    case PIPE_CAP_CULL_DISTANCE:
 312       return 1;
 313    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 314       return 1;
 315    case PIPE_CAP_CLEAR_TEXTURE:
 316       return 1;
 317    case PIPE_CAP_MAX_VARYINGS:
 318       return 32;
 319    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 320       return 1;
 321    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 322    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 323    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 324    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 325    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 326    case PIPE_CAP_TGSI_TXQS:
 327    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 328    case PIPE_CAP_SHAREABLE_SHADERS:
 329    case PIPE_CAP_DRAW_PARAMETERS:
 330    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 331    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 332    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 333    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 334    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 335    case PIPE_CAP_INVALIDATE_BUFFER:
 336    case PIPE_CAP_GENERATE_MIPMAP:
 337    case PIPE_CAP_STRING_MARKER:
 338    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 339    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 340    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 341    case PIPE_CAP_QUERY_MEMORY_INFO:
 342    case PIPE_CAP_PCI_GROUP:
 343    case PIPE_CAP_PCI_BUS:
 344    case PIPE_CAP_PCI_DEVICE:
 345    case PIPE_CAP_PCI_FUNCTION:
 346    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 347    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 348    case PIPE_CAP_TGSI_VOTE:
 349    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 350    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 351    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 352    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 353    case PIPE_CAP_NATIVE_FENCE_FD:
 354    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 355    case PIPE_CAP_FBFETCH:
 356    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 357    case PIPE_CAP_TGSI_CLOCK:
 358    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 359    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 360    case PIPE_CAP_TGSI_BALLOT:
 361    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 362    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 363    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 364    case PIPE_CAP_POST_DEPTH_COVERAGE:
 365    case PIPE_CAP_BINDLESS_TEXTURE:
 366    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 367    case PIPE_CAP_MEMOBJ:
 368    case PIPE_CAP_LOAD_CONSTBUF:
 369    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 370    case PIPE_CAP_TILE_RASTER_ORDER:
 371    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 372    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 373    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 374    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 375    case PIPE_CAP_FENCE_SIGNAL:
 376    case PIPE_CAP_CONSTBUF0_FLAGS:
 377    case PIPE_CAP_PACKED_UNIFORMS:
 378    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 379    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 380    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 381    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 382    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 383    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 384    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 385       return 0;
 386    case PIPE_CAP_MAX_GS_INVOCATIONS:
 387       return 32;
 388    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 389       return LP_MAX_TGSI_SHADER_BUFFER_SIZE;
 390    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 391    case PIPE_CAP_TGSI_TG4_COMPONENT_IN_SWIZZLE:
 392       return 1;
 393    default:
 394       return u_pipe_screen_get_param_defaults(screen, param);
 395    }
 396 }
 397
 398 static int
 399 llvmpipe_get_shader_param(struct pipe_screen *screen,
 400                           enum pipe_shader_type shader,
 401                           enum pipe_shader_cap param)
 402 {
 403    switch(shader)
 404    {
 405    case PIPE_SHADER_FRAGMENT:
 406    case PIPE_SHADER_COMPUTE:
 407       switch (param) {
 408       default:
 409          return gallivm_get_shader_param(param);
 410       }
 411    case PIPE_SHADER_VERTEX:
 412    case PIPE_SHADER_GEOMETRY:
 413       switch (param) {
 414       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 415          /* At this time, the draw module and llvmpipe driver only
 416           * support vertex shader texture lookups when LLVM is enabled in
 417           * the draw module.
 418           */
 419          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 420             return PIPE_MAX_SAMPLERS;
 421          else
 422             return 0;
 423       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 424          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 425             return PIPE_MAX_SHADER_SAMPLER_VIEWS;
 426          else
 427             return 0;
 428       default:
 429          return draw_get_shader_param(shader, param);
 430       }
 431    default:
 432       return 0;
 433    }
 434 }
 435
 436 static float
 437 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 438 {
 439    switch (param) {
 440    case PIPE_CAPF_MAX_LINE_WIDTH:
 441       /* fall-through */
 442    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 443       return 255.0; /* arbitrary */
 444    case PIPE_CAPF_MAX_POINT_WIDTH:
 445       /* fall-through */
 446    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 447       return 255.0; /* arbitrary */
 448    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 449       return 16.0; /* not actually signficant at this time */
 450    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 451       return 16.0; /* arbitrary */
 452    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 453       return 0.0;
 454    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 455       return 0.0;
 456    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 457       return 0.0;
 458    }
 459    /* should only get here on unhandled cases */
 460    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 461    return 0.0;
 462 }
 463
 464 static int
 465 llvmpipe_get_compute_param(struct pipe_screen *_screen,
 466                            enum pipe_shader_ir ir_type,
 467                            enum pipe_compute_cap param,
 468                            void *ret)
 469 {
 470    switch (param) {
 471    case PIPE_COMPUTE_CAP_IR_TARGET:
 472       return 0;
 473    case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
 474       if (ret) {
 475          uint64_t *grid_size = ret;
 476          grid_size[0] = 65535;
 477          grid_size[1] = 65535;
 478          grid_size[2] = 65535;
 479       }
 480       return 3 * sizeof(uint64_t) ;
 481    case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
 482       if (ret) {
 483          uint64_t *block_size = ret;
 484          block_size[0] = 1024;
 485          block_size[1] = 1024;
 486          block_size[2] = 1024;
 487       }
 488       return 3 * sizeof(uint64_t);
 489    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
 490       if (ret) {
 491          uint64_t *max_threads_per_block = ret;
 492          *max_threads_per_block = 1024;
 493       }
 494       return sizeof(uint64_t);
 495    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
 496       if (ret) {
 497          uint64_t *max_local_size = ret;
 498          *max_local_size = 32768;
 499       }
 500       return sizeof(uint64_t);
 501    case PIPE_COMPUTE_CAP_GRID_DIMENSION:
 502    case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
 503    case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
 504    case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
 505    case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
 506    case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
 507    case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
 508    case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
 509    case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
 510    case PIPE_COMPUTE_CAP_ADDRESS_BITS:
 511    case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
 512       break;
 513    }
 514    return 0;
 515 }
 516
 517 /**
 518  * Query format support for creating a texture, drawing surface, etc.
 519  * \param format  the format to test
 520  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 521  */
 522 static bool
 523 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 524                               enum pipe_format format,
 525                               enum pipe_texture_target target,
 526                               unsigned sample_count,
 527                               unsigned storage_sample_count,
 528                               unsigned bind)
 529 {
 530    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 531    struct sw_winsys *winsys = screen->winsys;
 532    const struct util_format_description *format_desc;
 533
 534    format_desc = util_format_description(format);
 535    if (!format_desc)
 536       return false;
 537
 538    assert(target == PIPE_BUFFER ||
 539           target == PIPE_TEXTURE_1D ||
 540           target == PIPE_TEXTURE_1D_ARRAY ||
 541           target == PIPE_TEXTURE_2D ||
 542           target == PIPE_TEXTURE_2D_ARRAY ||
 543           target == PIPE_TEXTURE_RECT ||
 544           target == PIPE_TEXTURE_3D ||
 545           target == PIPE_TEXTURE_CUBE ||
 546           target == PIPE_TEXTURE_CUBE_ARRAY);
 547
 548    if (sample_count > 1)
 549       return false;
 550
 551    if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 552       return false;
 553
 554    if (bind & PIPE_BIND_RENDER_TARGET) {
 555       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
 556          /* this is a lie actually other formats COULD exist where we would fail */
 557          if (format_desc->nr_channels < 3)
 558             return false;
 559       }
 560       else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 561          return false;
 562
 563       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN &&
 564           format != PIPE_FORMAT_R11G11B10_FLOAT)
 565          return false;
 566
 567       assert(format_desc->block.width == 1);
 568       assert(format_desc->block.height == 1);
 569
 570       if (format_desc->is_mixed)
 571          return false;
 572
 573       if (!format_desc->is_array && !format_desc->is_bitmask &&
 574           format != PIPE_FORMAT_R11G11B10_FLOAT)
 575          return false;
 576    }
 577
 578    if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
 579        ((bind & PIPE_BIND_DISPLAY_TARGET) == 0)) {
 580       /* Disable all 3-channel formats, where channel size != 32 bits.
 581        * In some cases we run into crashes (in generate_unswizzled_blend()),
 582        * for 3-channel RGB16 variants, there was an apparent LLVM bug.
 583        * In any case, disabling the shallower 3-channel formats avoids a
 584        * number of issues with GL_ARB_copy_image support.
 585        */
 586       if (format_desc->is_array &&
 587           format_desc->nr_channels == 3 &&
 588           format_desc->block.bits != 96) {
 589          return false;
 590       }
 591    }
 592
 593    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 594       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 595          return false;
 596    }
 597
 598    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 599       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 600          return false;
 601
 602       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 603          return false;
 604
 605       /* TODO: Support stencil-only formats */
 606       if (format_desc->swizzle[0] == PIPE_SWIZZLE_NONE) {
 607          return false;
 608       }
 609    }
 610
 611    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC ||
 612        format_desc->layout == UTIL_FORMAT_LAYOUT_ATC) {
 613       /* Software decoding is not hooked up. */
 614       return false;
 615    }
 616
 617    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
 618        format != PIPE_FORMAT_ETC1_RGB8)
 619       return false;
 620
 621    /*
 622     * Everything can be supported by u_format
 623     * (those without fetch_rgba_float might be not but shouldn't hit that)
 624     */
 625
 626    return true;
 627 }
 628
 629
 630
 631
 632 static void
 633 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 634                            struct pipe_resource *resource,
 635                            unsigned level, unsigned layer,
 636                            void *context_private,
 637                            struct pipe_box *sub_box)
 638 {
 639    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 640    struct sw_winsys *winsys = screen->winsys;
 641    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 642
 643    assert(texture->dt);
 644    if (texture->dt)
 645       winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
 646 }
 647
 648 static void
 649 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 650 {
 651    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 652    struct sw_winsys *winsys = screen->winsys;
 653
 654    if (screen->cs_tpool)
 655       lp_cs_tpool_destroy(screen->cs_tpool);
 656
 657    if (screen->rast)
 658       lp_rast_destroy(screen->rast);
 659
 660    lp_jit_screen_cleanup(screen);
 661
 662    if(winsys->destroy)
 663       winsys->destroy(winsys);
 664
 665    mtx_destroy(&screen->rast_mutex);
 666    mtx_destroy(&screen->cs_mutex);
 667    FREE(screen);
 668 }
 669
 670
 671
 672
 673 /**
 674  * Fence reference counting.
 675  */
 676 static void
 677 llvmpipe_fence_reference(struct pipe_screen *screen,
 678                          struct pipe_fence_handle **ptr,
 679                          struct pipe_fence_handle *fence)
 680 {
 681    struct lp_fence **old = (struct lp_fence **) ptr;
 682    struct lp_fence *f = (struct lp_fence *) fence;
 683
 684    lp_fence_reference(old, f);
 685 }
 686
 687
 688 /**
 689  * Wait for the fence to finish.
 690  */
 691 static bool
 692 llvmpipe_fence_finish(struct pipe_screen *screen,
 693                       struct pipe_context *ctx,
 694                       struct pipe_fence_handle *fence_handle,
 695                       uint64_t timeout)
 696 {
 697    struct lp_fence *f = (struct lp_fence *) fence_handle;
 698
 699    if (!timeout)
 700       return lp_fence_signalled(f);
 701
 702    if (!lp_fence_signalled(f)) {
 703       if (timeout != PIPE_TIMEOUT_INFINITE)
 704          return lp_fence_timedwait(f, timeout);
 705
 706       lp_fence_wait(f);
 707    }
 708    return true;
 709 }
 710
 711 static uint64_t
 712 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 713 {
 714    return os_time_get_nano();
 715 }
 716
 717 /**
 718  * Create a new pipe_screen object
 719  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 720  */
 721 struct pipe_screen *
 722 llvmpipe_create_screen(struct sw_winsys *winsys)
 723 {
 724    struct llvmpipe_screen *screen;
 725
 726    util_cpu_detect();
 727
 728 #ifdef DEBUG
 729    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 730 #endif
 731
 732    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 733
 734    screen = CALLOC_STRUCT(llvmpipe_screen);
 735    if (!screen)
 736       return NULL;
 737
 738    if (!lp_jit_screen_init(screen)) {
 739       FREE(screen);
 740       return NULL;
 741    }
 742
 743    screen->winsys = winsys;
 744
 745    screen->base.destroy = llvmpipe_destroy_screen;
 746
 747    screen->base.get_name = llvmpipe_get_name;
 748    screen->base.get_vendor = llvmpipe_get_vendor;
 749    screen->base.get_device_vendor = llvmpipe_get_vendor; // TODO should be the CPU vendor
 750    screen->base.get_param = llvmpipe_get_param;
 751    screen->base.get_shader_param = llvmpipe_get_shader_param;
 752    screen->base.get_compute_param = llvmpipe_get_compute_param;
 753    screen->base.get_paramf = llvmpipe_get_paramf;
 754    screen->base.is_format_supported = llvmpipe_is_format_supported;
 755
 756    screen->base.context_create = llvmpipe_create_context;
 757    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 758    screen->base.fence_reference = llvmpipe_fence_reference;
 759    screen->base.fence_finish = llvmpipe_fence_finish;
 760
 761    screen->base.get_timestamp = llvmpipe_get_timestamp;
 762
 763    llvmpipe_init_screen_resource_funcs(&screen->base);
 764
 765    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 766 #ifdef EMBEDDED_DEVICE
 767    screen->num_threads = 0;
 768 #endif
 769    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 770    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 771
 772    screen->rast = lp_rast_create(screen->num_threads);
 773    if (!screen->rast) {
 774       lp_jit_screen_cleanup(screen);
 775       FREE(screen);
 776       return NULL;
 777    }
 778    (void) mtx_init(&screen->rast_mutex, mtx_plain);
 779
 780    screen->cs_tpool = lp_cs_tpool_create(screen->num_threads);
 781    if (!screen->cs_tpool) {
 782       lp_rast_destroy(screen->rast);
 783       lp_jit_screen_cleanup(screen);
 784       FREE(screen);
 785       return NULL;
 786    }
 787    (void) mtx_init(&screen->cs_mutex, mtx_plain);
 788
 789    return &screen->base;
 790 }