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 #include "gallivm/lp_bld_nir.h"
  41
  42 #include "util/os_misc.h"
  43 #include "util/os_time.h"
  44 #include "lp_texture.h"
  45 #include "lp_fence.h"
  46 #include "lp_jit.h"
  47 #include "lp_screen.h"
  48 #include "lp_context.h"
  49 #include "lp_debug.h"
  50 #include "lp_public.h"
  51 #include "lp_limits.h"
  52 #include "lp_rast.h"
  53 #include "lp_cs_tpool.h"
  54
  55 #include "state_tracker/sw_winsys.h"
  56
  57 #include "nir.h"
  58
  59 #ifdef DEBUG
  60 int LP_DEBUG = 0;
  61
  62 static const struct debug_named_value lp_debug_flags[] = {
  63    { "pipe",   DEBUG_PIPE, NULL },
  64    { "tgsi",   DEBUG_TGSI, NULL },
  65    { "tex",    DEBUG_TEX, NULL },
  66    { "setup",  DEBUG_SETUP, NULL },
  67    { "rast",   DEBUG_RAST, NULL },
  68    { "query",  DEBUG_QUERY, NULL },
  69    { "screen", DEBUG_SCREEN, NULL },
  70    { "counters", DEBUG_COUNTERS, NULL },
  71    { "scene", DEBUG_SCENE, NULL },
  72    { "fence", DEBUG_FENCE, NULL },
  73    { "mem", DEBUG_MEM, NULL },
  74    { "fs", DEBUG_FS, NULL },
  75    { "cs", DEBUG_CS, NULL },
  76    { "tgsi_ir", DEBUG_TGSI_IR, NULL },
  77    { "cl", DEBUG_CL, NULL },
  78    DEBUG_NAMED_VALUE_END
  79 };
  80 #endif
  81
  82 int LP_PERF = 0;
  83 static const struct debug_named_value lp_perf_flags[] = {
  84    { "texmem",         PERF_TEX_MEM, NULL },
  85    { "no_mipmap",      PERF_NO_MIPMAPS, NULL },
  86    { "no_linear",      PERF_NO_LINEAR, NULL },
  87    { "no_mip_linear",  PERF_NO_MIP_LINEAR, NULL },
  88    { "no_tex",         PERF_NO_TEX, NULL },
  89    { "no_blend",       PERF_NO_BLEND, NULL },
  90    { "no_depth",       PERF_NO_DEPTH, NULL },
  91    { "no_alphatest",   PERF_NO_ALPHATEST, NULL },
  92    DEBUG_NAMED_VALUE_END
  93 };
  94
  95
  96 static const char *
  97 llvmpipe_get_vendor(struct pipe_screen *screen)
  98 {
  99    return "VMware, Inc.";
 100 }
 101
 102
 103 static const char *
 104 llvmpipe_get_name(struct pipe_screen *screen)
 105 {
 106    static char buf[100];
 107    snprintf(buf, sizeof(buf), "llvmpipe (LLVM " MESA_LLVM_VERSION_STRING ", %u bits)",
 108             lp_native_vector_width );
 109    return buf;
 110 }
 111
 112
 113 static int
 114 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
 115 {
 116    switch (param) {
 117    case PIPE_CAP_NPOT_TEXTURES:
 118    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 119    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 120       return 1;
 121    case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
 122    case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
 123    case PIPE_CAP_VERTEX_SHADER_SATURATE:
 124       return 1;
 125    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 126       return 1;
 127    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 128       return PIPE_MAX_SO_BUFFERS;
 129    case PIPE_CAP_ANISOTROPIC_FILTER:
 130       return 0;
 131    case PIPE_CAP_POINT_SPRITE:
 132       return 1;
 133    case PIPE_CAP_MAX_RENDER_TARGETS:
 134       return PIPE_MAX_COLOR_BUFS;
 135    case PIPE_CAP_OCCLUSION_QUERY:
 136       return 1;
 137    case PIPE_CAP_QUERY_TIME_ELAPSED:
 138       return 0;
 139    case PIPE_CAP_QUERY_TIMESTAMP:
 140       return 1;
 141    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 142       return 1;
 143    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 144    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
 145       return 1;
 146    case PIPE_CAP_TEXTURE_SWIZZLE:
 147       return 1;
 148    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 149    case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
 150       return 0;
 151    case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
 152       return 1 << (LP_MAX_TEXTURE_2D_LEVELS - 1);
 153    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 154       return LP_MAX_TEXTURE_3D_LEVELS;
 155    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 156       return LP_MAX_TEXTURE_CUBE_LEVELS;
 157    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 158       return LP_MAX_TEXTURE_ARRAY_LAYERS;
 159    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 160       return 1;
 161    case PIPE_CAP_INDEP_BLEND_ENABLE:
 162       return 1;
 163    case PIPE_CAP_INDEP_BLEND_FUNC:
 164       return 1;
 165    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 166    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 167    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 168       return 1;
 169    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 170    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
 171       return 0;
 172    case PIPE_CAP_PRIMITIVE_RESTART:
 173       return 1;
 174    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 175       return 1;
 176    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 177       return 1;
 178    case PIPE_CAP_TGSI_INSTANCEID:
 179    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 180    case PIPE_CAP_START_INSTANCE:
 181       return 1;
 182    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 183       return 0;
 184    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 185       return 1;
 186    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 187    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 188       return 1;
 189    /* this is a lie could support arbitrary large offsets */
 190    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 191    case PIPE_CAP_MIN_TEXEL_OFFSET:
 192       return -32;
 193    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 194    case PIPE_CAP_MAX_TEXEL_OFFSET:
 195       return 31;
 196    case PIPE_CAP_CONDITIONAL_RENDER:
 197       return 1;
 198    case PIPE_CAP_TEXTURE_BARRIER:
 199       return 0;
 200    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 201    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 202       return 16*4;
 203    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 204    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 205       return 1024;
 206    case PIPE_CAP_MAX_VERTEX_STREAMS:
 207       return 1;
 208    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 209       return 2048;
 210    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 211    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 212       return 1;
 213    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 214       return 0;
 215    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 216    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 217       return 1;
 218    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 219       return 330;
 220    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 221       return 140;
 222    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 223       return 0;
 224    case PIPE_CAP_COMPUTE:
 225       return GALLIVM_HAVE_CORO;
 226    case PIPE_CAP_USER_VERTEX_BUFFERS:
 227       return 1;
 228    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 229    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 230    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 231       return 0;
 232    case PIPE_CAP_TGSI_TEXCOORD:
 233    case PIPE_CAP_DRAW_INDIRECT:
 234       return 1;
 235
 236    case PIPE_CAP_CUBE_MAP_ARRAY:
 237       return 1;
 238    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 239       return 16;
 240    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 241       return 0;
 242    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 243       return 64;
 244    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 245       return 1;
 246    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 247       return 65536;
 248    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 249       return 16;
 250    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 251       return 0;
 252    case PIPE_CAP_MAX_VIEWPORTS:
 253       return PIPE_MAX_VIEWPORTS;
 254    case PIPE_CAP_ENDIANNESS:
 255       return PIPE_ENDIAN_NATIVE;
 256    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 257       return 1;
 258    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 259       return 1;
 260    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 261       return 4;
 262    case PIPE_CAP_TEXTURE_GATHER_SM5:
 263    case PIPE_CAP_SAMPLE_SHADING:
 264    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 265       return 0;
 266    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 267       return 1;
 268    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 269       return 0;
 270    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 271    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 272       return 1;
 273    case PIPE_CAP_FAKE_SW_MSAA:
 274       return 1;
 275    case PIPE_CAP_TEXTURE_QUERY_LOD:
 276    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 277    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 278    case PIPE_CAP_DOUBLES:
 279    case PIPE_CAP_INT64:
 280    case PIPE_CAP_INT64_DIVMOD:
 281    case PIPE_CAP_QUERY_SO_OVERFLOW:
 282    case PIPE_CAP_TGSI_DIV:
 283       return 1;
 284
 285    case PIPE_CAP_VENDOR_ID:
 286       return 0xFFFFFFFF;
 287    case PIPE_CAP_DEVICE_ID:
 288       return 0xFFFFFFFF;
 289    case PIPE_CAP_ACCELERATED:
 290       return 0;
 291    case PIPE_CAP_VIDEO_MEMORY: {
 292       /* XXX: Do we want to return the full amount fo system memory ? */
 293       uint64_t system_memory;
 294
 295       if (!os_get_total_physical_memory(&system_memory))
 296          return 0;
 297
 298       if (sizeof(void *) == 4)
 299          /* Cap to 2 GB on 32 bits system. We do this because llvmpipe does
 300           * eat application memory, which is quite limited on 32 bits. App
 301           * shouldn't expect too much available memory. */
 302          system_memory = MIN2(system_memory, 2048 << 20);
 303
 304       return (int)(system_memory >> 20);
 305    }
 306    case PIPE_CAP_UMA:
 307       return 0;
 308    case PIPE_CAP_CLIP_HALFZ:
 309       return 1;
 310    case PIPE_CAP_VERTEXID_NOBASE:
 311       return 0;
 312    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 313    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 314    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 315       return 1;
 316    case PIPE_CAP_CULL_DISTANCE:
 317       return 1;
 318    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 319       return 1;
 320    case PIPE_CAP_CLEAR_TEXTURE:
 321       return 1;
 322    case PIPE_CAP_MAX_VARYINGS:
 323       return 32;
 324    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 325       return 1;
 326    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 327       return 1;
 328    case PIPE_CAP_DRAW_PARAMETERS:
 329       return 1;
 330    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 331    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 332    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 333    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 334    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 335    case PIPE_CAP_TGSI_TXQS:
 336    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 337    case PIPE_CAP_SHAREABLE_SHADERS:
 338    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 339    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 340    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 341    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 342    case PIPE_CAP_INVALIDATE_BUFFER:
 343    case PIPE_CAP_GENERATE_MIPMAP:
 344    case PIPE_CAP_STRING_MARKER:
 345    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 346    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 347    case PIPE_CAP_QUERY_MEMORY_INFO:
 348    case PIPE_CAP_PCI_GROUP:
 349    case PIPE_CAP_PCI_BUS:
 350    case PIPE_CAP_PCI_DEVICE:
 351    case PIPE_CAP_PCI_FUNCTION:
 352    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 353    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 354    case PIPE_CAP_TGSI_VOTE:
 355    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 356    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 357    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 358    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 359    case PIPE_CAP_NATIVE_FENCE_FD:
 360    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 361    case PIPE_CAP_FBFETCH:
 362    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 363    case PIPE_CAP_TGSI_CLOCK:
 364    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 365    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 366    case PIPE_CAP_TGSI_BALLOT:
 367    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 368    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 369    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 370    case PIPE_CAP_POST_DEPTH_COVERAGE:
 371    case PIPE_CAP_BINDLESS_TEXTURE:
 372    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 373    case PIPE_CAP_MEMOBJ:
 374    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 375    case PIPE_CAP_TILE_RASTER_ORDER:
 376    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 377    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 378    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 379    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 380    case PIPE_CAP_FENCE_SIGNAL:
 381    case PIPE_CAP_CONSTBUF0_FLAGS:
 382    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 383    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 384    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 385    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 386    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 387    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 388    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 389       return 0;
 390    case PIPE_CAP_MAX_GS_INVOCATIONS:
 391       return 32;
 392    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 393       return LP_MAX_TGSI_SHADER_BUFFER_SIZE;
 394    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 395    case PIPE_CAP_TGSI_TG4_COMPONENT_IN_SWIZZLE:
 396    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 397       return 1;
 398    case PIPE_CAP_LOAD_CONSTBUF:
 399    case PIPE_CAP_PACKED_UNIFORMS: {
 400       struct llvmpipe_screen *lscreen = llvmpipe_screen(screen);
 401       return !lscreen->use_tgsi;
 402    }
 403    default:
 404       return u_pipe_screen_get_param_defaults(screen, param);
 405    }
 406 }
 407
 408 static int
 409 llvmpipe_get_shader_param(struct pipe_screen *screen,
 410                           enum pipe_shader_type shader,
 411                           enum pipe_shader_cap param)
 412 {
 413    switch(shader)
 414    {
 415    case PIPE_SHADER_COMPUTE:
 416       if ((LP_DEBUG & DEBUG_CL) && param == PIPE_SHADER_CAP_SUPPORTED_IRS)
 417          return (1 << PIPE_SHADER_IR_TGSI) | (1 << PIPE_SHADER_IR_NIR) | (1 << PIPE_SHADER_IR_NIR_SERIALIZED);
 418    case PIPE_SHADER_FRAGMENT:
 419       if (param == PIPE_SHADER_CAP_PREFERRED_IR) {
 420          struct llvmpipe_screen *lscreen = llvmpipe_screen(screen);
 421          if (lscreen->use_tgsi)
 422             return PIPE_SHADER_IR_TGSI;
 423          else
 424             return PIPE_SHADER_IR_NIR;
 425       }
 426       switch (param) {
 427       default:
 428          return gallivm_get_shader_param(param);
 429       }
 430    case PIPE_SHADER_VERTEX:
 431    case PIPE_SHADER_GEOMETRY:
 432       if (param == PIPE_SHADER_CAP_PREFERRED_IR) {
 433          struct llvmpipe_screen *lscreen = llvmpipe_screen(screen);
 434          if (lscreen->use_tgsi)
 435             return PIPE_SHADER_IR_TGSI;
 436          else
 437             return PIPE_SHADER_IR_NIR;
 438       }
 439
 440       switch (param) {
 441       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 442          /* At this time, the draw module and llvmpipe driver only
 443           * support vertex shader texture lookups when LLVM is enabled in
 444           * the draw module.
 445           */
 446          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 447             return PIPE_MAX_SAMPLERS;
 448          else
 449             return 0;
 450       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 451          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 452             return PIPE_MAX_SHADER_SAMPLER_VIEWS;
 453          else
 454             return 0;
 455       default:
 456          return draw_get_shader_param(shader, param);
 457       }
 458    default:
 459       return 0;
 460    }
 461 }
 462
 463 static float
 464 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 465 {
 466    switch (param) {
 467    case PIPE_CAPF_MAX_LINE_WIDTH:
 468       /* fall-through */
 469    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 470       return 255.0; /* arbitrary */
 471    case PIPE_CAPF_MAX_POINT_WIDTH:
 472       /* fall-through */
 473    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 474       return 255.0; /* arbitrary */
 475    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 476       return 16.0; /* not actually signficant at this time */
 477    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 478       return 16.0; /* arbitrary */
 479    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 480       return 0.0;
 481    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 482       return 0.0;
 483    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 484       return 0.0;
 485    }
 486    /* should only get here on unhandled cases */
 487    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 488    return 0.0;
 489 }
 490
 491 static int
 492 llvmpipe_get_compute_param(struct pipe_screen *_screen,
 493                            enum pipe_shader_ir ir_type,
 494                            enum pipe_compute_cap param,
 495                            void *ret)
 496 {
 497    switch (param) {
 498    case PIPE_COMPUTE_CAP_IR_TARGET:
 499       return 0;
 500    case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
 501       if (ret) {
 502          uint64_t *grid_size = ret;
 503          grid_size[0] = 65535;
 504          grid_size[1] = 65535;
 505          grid_size[2] = 65535;
 506       }
 507       return 3 * sizeof(uint64_t) ;
 508    case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
 509       if (ret) {
 510          uint64_t *block_size = ret;
 511          block_size[0] = 1024;
 512          block_size[1] = 1024;
 513          block_size[2] = 1024;
 514       }
 515       return 3 * sizeof(uint64_t);
 516    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
 517       if (ret) {
 518          uint64_t *max_threads_per_block = ret;
 519          *max_threads_per_block = 1024;
 520       }
 521       return sizeof(uint64_t);
 522    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
 523       if (ret) {
 524          uint64_t *max_local_size = ret;
 525          *max_local_size = 32768;
 526       }
 527       return sizeof(uint64_t);
 528    case PIPE_COMPUTE_CAP_GRID_DIMENSION:
 529       if (ret) {
 530          uint32_t *grid_dim = ret;
 531          *grid_dim = 3;
 532       }
 533       return sizeof(uint32_t);
 534    case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
 535       if (ret) {
 536          uint64_t *max_global_size = ret;
 537          *max_global_size = (1ULL << 31);
 538       }
 539       return sizeof(uint64_t);
 540    case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
 541       if (ret) {
 542          uint64_t *max_mem_alloc_size = ret;
 543          *max_mem_alloc_size = (1ULL << 31);
 544       }
 545       return sizeof(uint64_t);
 546    case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
 547       if (ret) {
 548          uint64_t *max_private = ret;
 549          *max_private = (1UL << 31);
 550       }
 551       return sizeof(uint64_t);
 552    case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
 553       if (ret) {
 554          uint64_t *max_input = ret;
 555          *max_input = 4096;
 556       }
 557       return sizeof(uint64_t);
 558    case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
 559       if (ret) {
 560          uint32_t *images = ret;
 561          *images = 0;
 562       }
 563       return sizeof(uint32_t);
 564    case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
 565       return 0;
 566    case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
 567       if (ret) {
 568          uint32_t *subgroup_size = ret;
 569          *subgroup_size = 32;
 570       }
 571       return sizeof(uint32_t);
 572    case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
 573       if (ret) {
 574          uint32_t *max_compute_units = ret;
 575          *max_compute_units = 8;
 576       }
 577       return sizeof(uint32_t);
 578    case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
 579       if (ret) {
 580          uint32_t *max_clock_freq = ret;
 581          *max_clock_freq = 300;
 582       }
 583       return sizeof(uint32_t);
 584    case PIPE_COMPUTE_CAP_ADDRESS_BITS:
 585       if (ret) {
 586          uint32_t *address_bits = ret;
 587          *address_bits = 64;
 588       }
 589       return sizeof(uint32_t);
 590    }
 591    return 0;
 592 }
 593
 594 static const struct nir_shader_compiler_options gallivm_nir_options = {
 595    .lower_scmp = true,
 596    .lower_flrp32 = true,
 597    .lower_flrp64 = true,
 598    .lower_fsat = true,
 599    .lower_bitfield_insert_to_bitfield_select = true,
 600    .lower_bitfield_extract = true,
 601    .lower_sub = true,
 602    .lower_ffma = true,
 603    .lower_fmod = true,
 604    .lower_hadd = true,
 605    .lower_add_sat = true,
 606    .lower_pack_snorm_2x16 = true,
 607    .lower_pack_snorm_4x8 = true,
 608    .lower_pack_unorm_2x16 = true,
 609    .lower_pack_unorm_4x8 = true,
 610    .lower_unpack_snorm_2x16 = true,
 611    .lower_unpack_snorm_4x8 = true,
 612    .lower_unpack_unorm_2x16 = true,
 613    .lower_unpack_unorm_4x8 = true,
 614    .lower_extract_byte = true,
 615    .lower_extract_word = true,
 616    .lower_rotate = true,
 617    .optimize_sample_mask_in = true,
 618    .max_unroll_iterations = 32,
 619    .use_interpolated_input_intrinsics = true,
 620    .lower_to_scalar = true,
 621 };
 622
 623 static void
 624 llvmpipe_finalize_nir(struct pipe_screen *screen,
 625                       void *nirptr,
 626                       bool optimize)
 627 {
 628    struct nir_shader *nir = (struct nir_shader *)nirptr;
 629    lp_build_opt_nir(nir);
 630 }
 631
 632 static inline const void *
 633 llvmpipe_get_compiler_options(struct pipe_screen *screen,
 634                               enum pipe_shader_ir ir,
 635                               enum pipe_shader_type shader)
 636 {
 637    assert(ir == PIPE_SHADER_IR_NIR);
 638    return &gallivm_nir_options;
 639 }
 640
 641 /**
 642  * Query format support for creating a texture, drawing surface, etc.
 643  * \param format  the format to test
 644  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 645  */
 646 static bool
 647 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 648                               enum pipe_format format,
 649                               enum pipe_texture_target target,
 650                               unsigned sample_count,
 651                               unsigned storage_sample_count,
 652                               unsigned bind)
 653 {
 654    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 655    struct sw_winsys *winsys = screen->winsys;
 656    const struct util_format_description *format_desc;
 657
 658    format_desc = util_format_description(format);
 659    if (!format_desc)
 660       return false;
 661
 662    assert(target == PIPE_BUFFER ||
 663           target == PIPE_TEXTURE_1D ||
 664           target == PIPE_TEXTURE_1D_ARRAY ||
 665           target == PIPE_TEXTURE_2D ||
 666           target == PIPE_TEXTURE_2D_ARRAY ||
 667           target == PIPE_TEXTURE_RECT ||
 668           target == PIPE_TEXTURE_3D ||
 669           target == PIPE_TEXTURE_CUBE ||
 670           target == PIPE_TEXTURE_CUBE_ARRAY);
 671
 672    if (sample_count > 1)
 673       return false;
 674
 675    if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 676       return false;
 677
 678    if (bind & PIPE_BIND_RENDER_TARGET) {
 679       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
 680          /* this is a lie actually other formats COULD exist where we would fail */
 681          if (format_desc->nr_channels < 3)
 682             return false;
 683       }
 684       else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 685          return false;
 686
 687       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN &&
 688           format != PIPE_FORMAT_R11G11B10_FLOAT)
 689          return false;
 690
 691       assert(format_desc->block.width == 1);
 692       assert(format_desc->block.height == 1);
 693
 694       if (format_desc->is_mixed)
 695          return false;
 696
 697       if (!format_desc->is_array && !format_desc->is_bitmask &&
 698           format != PIPE_FORMAT_R11G11B10_FLOAT)
 699          return false;
 700    }
 701
 702    if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
 703        ((bind & PIPE_BIND_DISPLAY_TARGET) == 0)) {
 704       /* Disable all 3-channel formats, where channel size != 32 bits.
 705        * In some cases we run into crashes (in generate_unswizzled_blend()),
 706        * for 3-channel RGB16 variants, there was an apparent LLVM bug.
 707        * In any case, disabling the shallower 3-channel formats avoids a
 708        * number of issues with GL_ARB_copy_image support.
 709        */
 710       if (format_desc->is_array &&
 711           format_desc->nr_channels == 3 &&
 712           format_desc->block.bits != 96) {
 713          return false;
 714       }
 715    }
 716
 717    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 718       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 719          return false;
 720    }
 721
 722    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 723       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 724          return false;
 725
 726       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 727          return false;
 728
 729       /* TODO: Support stencil-only formats */
 730       if (format_desc->swizzle[0] == PIPE_SWIZZLE_NONE) {
 731          return false;
 732       }
 733    }
 734
 735    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC ||
 736        format_desc->layout == UTIL_FORMAT_LAYOUT_ATC ||
 737        format_desc->layout == UTIL_FORMAT_LAYOUT_FXT1) {
 738       /* Software decoding is not hooked up. */
 739       return false;
 740    }
 741
 742    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
 743        format != PIPE_FORMAT_ETC1_RGB8)
 744       return false;
 745
 746    /*
 747     * Everything can be supported by u_format
 748     * (those without fetch_rgba_float might be not but shouldn't hit that)
 749     */
 750
 751    return true;
 752 }
 753
 754
 755
 756
 757 static void
 758 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 759                            struct pipe_resource *resource,
 760                            unsigned level, unsigned layer,
 761                            void *context_private,
 762                            struct pipe_box *sub_box)
 763 {
 764    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 765    struct sw_winsys *winsys = screen->winsys;
 766    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 767
 768    assert(texture->dt);
 769    if (texture->dt)
 770       winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
 771 }
 772
 773 static void
 774 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 775 {
 776    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 777    struct sw_winsys *winsys = screen->winsys;
 778
 779    if (screen->cs_tpool)
 780       lp_cs_tpool_destroy(screen->cs_tpool);
 781
 782    if (screen->rast)
 783       lp_rast_destroy(screen->rast);
 784
 785    lp_jit_screen_cleanup(screen);
 786
 787    if(winsys->destroy)
 788       winsys->destroy(winsys);
 789
 790    glsl_type_singleton_decref();
 791
 792    mtx_destroy(&screen->rast_mutex);
 793    mtx_destroy(&screen->cs_mutex);
 794    FREE(screen);
 795 }
 796
 797
 798
 799
 800 /**
 801  * Fence reference counting.
 802  */
 803 static void
 804 llvmpipe_fence_reference(struct pipe_screen *screen,
 805                          struct pipe_fence_handle **ptr,
 806                          struct pipe_fence_handle *fence)
 807 {
 808    struct lp_fence **old = (struct lp_fence **) ptr;
 809    struct lp_fence *f = (struct lp_fence *) fence;
 810
 811    lp_fence_reference(old, f);
 812 }
 813
 814
 815 /**
 816  * Wait for the fence to finish.
 817  */
 818 static bool
 819 llvmpipe_fence_finish(struct pipe_screen *screen,
 820                       struct pipe_context *ctx,
 821                       struct pipe_fence_handle *fence_handle,
 822                       uint64_t timeout)
 823 {
 824    struct lp_fence *f = (struct lp_fence *) fence_handle;
 825
 826    if (!timeout)
 827       return lp_fence_signalled(f);
 828
 829    if (!lp_fence_signalled(f)) {
 830       if (timeout != PIPE_TIMEOUT_INFINITE)
 831          return lp_fence_timedwait(f, timeout);
 832
 833       lp_fence_wait(f);
 834    }
 835    return true;
 836 }
 837
 838 static uint64_t
 839 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 840 {
 841    return os_time_get_nano();
 842 }
 843
 844 /**
 845  * Create a new pipe_screen object
 846  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 847  */
 848 struct pipe_screen *
 849 llvmpipe_create_screen(struct sw_winsys *winsys)
 850 {
 851    struct llvmpipe_screen *screen;
 852
 853    util_cpu_detect();
 854
 855    glsl_type_singleton_init_or_ref();
 856
 857 #ifdef DEBUG
 858    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 859 #endif
 860
 861    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 862
 863    screen = CALLOC_STRUCT(llvmpipe_screen);
 864    if (!screen)
 865       return NULL;
 866
 867    if (!lp_jit_screen_init(screen)) {
 868       FREE(screen);
 869       return NULL;
 870    }
 871
 872    screen->winsys = winsys;
 873
 874    screen->base.destroy = llvmpipe_destroy_screen;
 875
 876    screen->base.get_name = llvmpipe_get_name;
 877    screen->base.get_vendor = llvmpipe_get_vendor;
 878    screen->base.get_device_vendor = llvmpipe_get_vendor; // TODO should be the CPU vendor
 879    screen->base.get_param = llvmpipe_get_param;
 880    screen->base.get_shader_param = llvmpipe_get_shader_param;
 881    screen->base.get_compute_param = llvmpipe_get_compute_param;
 882    screen->base.get_paramf = llvmpipe_get_paramf;
 883    screen->base.get_compiler_options = llvmpipe_get_compiler_options;
 884    screen->base.is_format_supported = llvmpipe_is_format_supported;
 885
 886    screen->base.context_create = llvmpipe_create_context;
 887    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 888    screen->base.fence_reference = llvmpipe_fence_reference;
 889    screen->base.fence_finish = llvmpipe_fence_finish;
 890
 891    screen->base.get_timestamp = llvmpipe_get_timestamp;
 892
 893    screen->base.finalize_nir = llvmpipe_finalize_nir;
 894    llvmpipe_init_screen_resource_funcs(&screen->base);
 895
 896    screen->use_tgsi = (LP_DEBUG & DEBUG_TGSI_IR);
 897    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 898 #ifdef EMBEDDED_DEVICE
 899    screen->num_threads = 0;
 900 #endif
 901    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 902    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 903
 904    screen->rast = lp_rast_create(screen->num_threads);
 905    if (!screen->rast) {
 906       lp_jit_screen_cleanup(screen);
 907       FREE(screen);
 908       return NULL;
 909    }
 910    (void) mtx_init(&screen->rast_mutex, mtx_plain);
 911
 912    screen->cs_tpool = lp_cs_tpool_create(screen->num_threads);
 913    if (!screen->cs_tpool) {
 914       lp_rast_destroy(screen->rast);
 915       lp_jit_screen_cleanup(screen);
 916       FREE(screen);
 917       return NULL;
 918    }
 919    (void) mtx_init(&screen->cs_mutex, mtx_plain);
 920
 921    return &screen->base;
 922 }