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       struct llvmpipe_screen *lscreen = llvmpipe_screen(screen);
 208       return lscreen->use_tgsi ? 1 : 4;
 209    }
 210    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 211       return 2048;
 212    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 213    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 214       return 1;
 215    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 216       return 0;
 217    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 218    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 219       return 1;
 220    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 221       return 330;
 222    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 223       return 140;
 224    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 225       return 0;
 226    case PIPE_CAP_COMPUTE:
 227       return GALLIVM_HAVE_CORO;
 228    case PIPE_CAP_USER_VERTEX_BUFFERS:
 229       return 1;
 230    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 231    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 232    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 233       return 0;
 234    case PIPE_CAP_TGSI_TEXCOORD:
 235    case PIPE_CAP_DRAW_INDIRECT:
 236       return 1;
 237
 238    case PIPE_CAP_CUBE_MAP_ARRAY:
 239       return 1;
 240    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 241       return 16;
 242    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 243       return 0;
 244    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 245       return 64;
 246    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 247       return 1;
 248    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 249       return 65536;
 250    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 251       return 16;
 252    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 253       return 0;
 254    case PIPE_CAP_MAX_VIEWPORTS:
 255       return PIPE_MAX_VIEWPORTS;
 256    case PIPE_CAP_ENDIANNESS:
 257       return PIPE_ENDIAN_NATIVE;
 258    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 259       return 1;
 260    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 261       return 1;
 262    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 263       return 4;
 264    case PIPE_CAP_TEXTURE_GATHER_SM5:
 265    case PIPE_CAP_SAMPLE_SHADING:
 266    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 267       return 0;
 268    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 269       return 1;
 270    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 271       return 1;
 272    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 273    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 274       return 1;
 275    case PIPE_CAP_FAKE_SW_MSAA:
 276       return 1;
 277    case PIPE_CAP_TEXTURE_QUERY_LOD:
 278    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 279    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 280    case PIPE_CAP_DOUBLES:
 281    case PIPE_CAP_INT64:
 282    case PIPE_CAP_INT64_DIVMOD:
 283    case PIPE_CAP_QUERY_SO_OVERFLOW:
 284    case PIPE_CAP_TGSI_DIV:
 285       return 1;
 286
 287    case PIPE_CAP_VENDOR_ID:
 288       return 0xFFFFFFFF;
 289    case PIPE_CAP_DEVICE_ID:
 290       return 0xFFFFFFFF;
 291    case PIPE_CAP_ACCELERATED:
 292       return 0;
 293    case PIPE_CAP_VIDEO_MEMORY: {
 294       /* XXX: Do we want to return the full amount fo system memory ? */
 295       uint64_t system_memory;
 296
 297       if (!os_get_total_physical_memory(&system_memory))
 298          return 0;
 299
 300       if (sizeof(void *) == 4)
 301          /* Cap to 2 GB on 32 bits system. We do this because llvmpipe does
 302           * eat application memory, which is quite limited on 32 bits. App
 303           * shouldn't expect too much available memory. */
 304          system_memory = MIN2(system_memory, 2048 << 20);
 305
 306       return (int)(system_memory >> 20);
 307    }
 308    case PIPE_CAP_UMA:
 309       return 0;
 310    case PIPE_CAP_CLIP_HALFZ:
 311       return 1;
 312    case PIPE_CAP_VERTEXID_NOBASE:
 313       return 0;
 314    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 315    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 316    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 317       return 1;
 318    case PIPE_CAP_CULL_DISTANCE:
 319       return 1;
 320    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 321       return 1;
 322    case PIPE_CAP_CLEAR_TEXTURE:
 323       return 1;
 324    case PIPE_CAP_MAX_VARYINGS:
 325       return 32;
 326    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 327       return 16;
 328    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 329       return 1;
 330    case PIPE_CAP_DRAW_PARAMETERS:
 331       return 1;
 332    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 333    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 334       return 1;
 335    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 336       return 32;
 337    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 338    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 339    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 340    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 341    case PIPE_CAP_TGSI_TXQS:
 342    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 343    case PIPE_CAP_SHAREABLE_SHADERS:
 344    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 345    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 346    case PIPE_CAP_INVALIDATE_BUFFER:
 347    case PIPE_CAP_GENERATE_MIPMAP:
 348    case PIPE_CAP_STRING_MARKER:
 349    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 350    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 351    case PIPE_CAP_QUERY_MEMORY_INFO:
 352    case PIPE_CAP_PCI_GROUP:
 353    case PIPE_CAP_PCI_BUS:
 354    case PIPE_CAP_PCI_DEVICE:
 355    case PIPE_CAP_PCI_FUNCTION:
 356    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 357    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 358    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 359    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 360    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 361    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 362    case PIPE_CAP_NATIVE_FENCE_FD:
 363    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 364    case PIPE_CAP_FBFETCH:
 365    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 366    case PIPE_CAP_TGSI_CLOCK:
 367    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 368    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 369    case PIPE_CAP_TGSI_BALLOT:
 370    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 371    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 372    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 373    case PIPE_CAP_POST_DEPTH_COVERAGE:
 374    case PIPE_CAP_BINDLESS_TEXTURE:
 375    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 376    case PIPE_CAP_MEMOBJ:
 377    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 378    case PIPE_CAP_TILE_RASTER_ORDER:
 379    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 380    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 381    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 382    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 383    case PIPE_CAP_FENCE_SIGNAL:
 384    case PIPE_CAP_CONSTBUF0_FLAGS:
 385    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 386    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 387    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 388    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 389    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 390    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 391    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 392       return 0;
 393    case PIPE_CAP_MAX_GS_INVOCATIONS:
 394       return 32;
 395    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 396       return LP_MAX_TGSI_SHADER_BUFFER_SIZE;
 397    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 398    case PIPE_CAP_TGSI_TG4_COMPONENT_IN_SWIZZLE:
 399    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 400       return 1;
 401    case PIPE_CAP_TGSI_VOTE:
 402    case PIPE_CAP_LOAD_CONSTBUF:
 403    case PIPE_CAP_PACKED_UNIFORMS: {
 404       struct llvmpipe_screen *lscreen = llvmpipe_screen(screen);
 405       return !lscreen->use_tgsi;
 406    }
 407    default:
 408       return u_pipe_screen_get_param_defaults(screen, param);
 409    }
 410 }
 411
 412 static int
 413 llvmpipe_get_shader_param(struct pipe_screen *screen,
 414                           enum pipe_shader_type shader,
 415                           enum pipe_shader_cap param)
 416 {
 417    struct llvmpipe_screen *lscreen = llvmpipe_screen(screen);
 418    switch(shader)
 419    {
 420    case PIPE_SHADER_COMPUTE:
 421       if ((LP_DEBUG & DEBUG_CL) && param == PIPE_SHADER_CAP_SUPPORTED_IRS)
 422          return (1 << PIPE_SHADER_IR_TGSI) | (1 << PIPE_SHADER_IR_NIR) | (1 << PIPE_SHADER_IR_NIR_SERIALIZED);
 423    case PIPE_SHADER_FRAGMENT:
 424       if (param == PIPE_SHADER_CAP_PREFERRED_IR) {
 425          if (lscreen->use_tgsi)
 426             return PIPE_SHADER_IR_TGSI;
 427          else
 428             return PIPE_SHADER_IR_NIR;
 429       }
 430       switch (param) {
 431       default:
 432          return gallivm_get_shader_param(param);
 433       }
 434    case PIPE_SHADER_TESS_CTRL:
 435    case PIPE_SHADER_TESS_EVAL:
 436       if (lscreen->use_tgsi)
 437          return 0;
 438    case PIPE_SHADER_VERTEX:
 439    case PIPE_SHADER_GEOMETRY:
 440       if (param == PIPE_SHADER_CAP_PREFERRED_IR) {
 441          if (lscreen->use_tgsi)
 442             return PIPE_SHADER_IR_TGSI;
 443          else
 444             return PIPE_SHADER_IR_NIR;
 445       }
 446
 447       switch (param) {
 448       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 449          /* At this time, the draw module and llvmpipe driver only
 450           * support vertex shader texture lookups when LLVM is enabled in
 451           * the draw module.
 452           */
 453          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 454             return PIPE_MAX_SAMPLERS;
 455          else
 456             return 0;
 457       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 458          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 459             return PIPE_MAX_SHADER_SAMPLER_VIEWS;
 460          else
 461             return 0;
 462       default:
 463          return draw_get_shader_param(shader, param);
 464       }
 465    default:
 466       return 0;
 467    }
 468 }
 469
 470 static float
 471 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 472 {
 473    switch (param) {
 474    case PIPE_CAPF_MAX_LINE_WIDTH:
 475       /* fall-through */
 476    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 477       return 255.0; /* arbitrary */
 478    case PIPE_CAPF_MAX_POINT_WIDTH:
 479       /* fall-through */
 480    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 481       return LP_MAX_POINT_WIDTH; /* arbitrary */
 482    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 483       return 16.0; /* not actually signficant at this time */
 484    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 485       return 16.0; /* arbitrary */
 486    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 487       return 0.0;
 488    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 489       return 0.0;
 490    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 491       return 0.0;
 492    }
 493    /* should only get here on unhandled cases */
 494    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 495    return 0.0;
 496 }
 497
 498 static int
 499 llvmpipe_get_compute_param(struct pipe_screen *_screen,
 500                            enum pipe_shader_ir ir_type,
 501                            enum pipe_compute_cap param,
 502                            void *ret)
 503 {
 504    switch (param) {
 505    case PIPE_COMPUTE_CAP_IR_TARGET:
 506       return 0;
 507    case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
 508       if (ret) {
 509          uint64_t *grid_size = ret;
 510          grid_size[0] = 65535;
 511          grid_size[1] = 65535;
 512          grid_size[2] = 65535;
 513       }
 514       return 3 * sizeof(uint64_t) ;
 515    case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
 516       if (ret) {
 517          uint64_t *block_size = ret;
 518          block_size[0] = 1024;
 519          block_size[1] = 1024;
 520          block_size[2] = 1024;
 521       }
 522       return 3 * sizeof(uint64_t);
 523    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
 524       if (ret) {
 525          uint64_t *max_threads_per_block = ret;
 526          *max_threads_per_block = 1024;
 527       }
 528       return sizeof(uint64_t);
 529    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
 530       if (ret) {
 531          uint64_t *max_local_size = ret;
 532          *max_local_size = 32768;
 533       }
 534       return sizeof(uint64_t);
 535    case PIPE_COMPUTE_CAP_GRID_DIMENSION:
 536       if (ret) {
 537          uint32_t *grid_dim = ret;
 538          *grid_dim = 3;
 539       }
 540       return sizeof(uint32_t);
 541    case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
 542       if (ret) {
 543          uint64_t *max_global_size = ret;
 544          *max_global_size = (1ULL << 31);
 545       }
 546       return sizeof(uint64_t);
 547    case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
 548       if (ret) {
 549          uint64_t *max_mem_alloc_size = ret;
 550          *max_mem_alloc_size = (1ULL << 31);
 551       }
 552       return sizeof(uint64_t);
 553    case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
 554       if (ret) {
 555          uint64_t *max_private = ret;
 556          *max_private = (1UL << 31);
 557       }
 558       return sizeof(uint64_t);
 559    case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
 560       if (ret) {
 561          uint64_t *max_input = ret;
 562          *max_input = 4096;
 563       }
 564       return sizeof(uint64_t);
 565    case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
 566       if (ret) {
 567          uint32_t *images = ret;
 568          *images = 0;
 569       }
 570       return sizeof(uint32_t);
 571    case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
 572       return 0;
 573    case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
 574       if (ret) {
 575          uint32_t *subgroup_size = ret;
 576          *subgroup_size = 32;
 577       }
 578       return sizeof(uint32_t);
 579    case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
 580       if (ret) {
 581          uint32_t *max_compute_units = ret;
 582          *max_compute_units = 8;
 583       }
 584       return sizeof(uint32_t);
 585    case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
 586       if (ret) {
 587          uint32_t *max_clock_freq = ret;
 588          *max_clock_freq = 300;
 589       }
 590       return sizeof(uint32_t);
 591    case PIPE_COMPUTE_CAP_ADDRESS_BITS:
 592       if (ret) {
 593          uint32_t *address_bits = ret;
 594          *address_bits = 64;
 595       }
 596       return sizeof(uint32_t);
 597    }
 598    return 0;
 599 }
 600
 601 static const struct nir_shader_compiler_options gallivm_nir_options = {
 602    .lower_scmp = true,
 603    .lower_flrp32 = true,
 604    .lower_flrp64 = true,
 605    .lower_fsat = true,
 606    .lower_bitfield_insert_to_shifts = true,
 607    .lower_bitfield_extract_to_shifts = true,
 608    .lower_sub = true,
 609    .lower_ffma = true,
 610    .lower_fmod = true,
 611    .lower_hadd = true,
 612    .lower_add_sat = true,
 613    .lower_pack_snorm_2x16 = true,
 614    .lower_pack_snorm_4x8 = true,
 615    .lower_pack_unorm_2x16 = true,
 616    .lower_pack_unorm_4x8 = true,
 617    .lower_unpack_snorm_2x16 = true,
 618    .lower_unpack_snorm_4x8 = true,
 619    .lower_unpack_unorm_2x16 = true,
 620    .lower_unpack_unorm_4x8 = true,
 621    .lower_extract_byte = true,
 622    .lower_extract_word = true,
 623    .lower_rotate = true,
 624    .lower_ifind_msb = true,
 625    .optimize_sample_mask_in = true,
 626    .max_unroll_iterations = 32,
 627    .use_interpolated_input_intrinsics = true,
 628    .lower_to_scalar = true,
 629 };
 630
 631 static void
 632 llvmpipe_finalize_nir(struct pipe_screen *screen,
 633                       void *nirptr,
 634                       bool optimize)
 635 {
 636    struct nir_shader *nir = (struct nir_shader *)nirptr;
 637    lp_build_opt_nir(nir);
 638 }
 639
 640 static inline const void *
 641 llvmpipe_get_compiler_options(struct pipe_screen *screen,
 642                               enum pipe_shader_ir ir,
 643                               enum pipe_shader_type shader)
 644 {
 645    assert(ir == PIPE_SHADER_IR_NIR);
 646    return &gallivm_nir_options;
 647 }
 648
 649 /**
 650  * Query format support for creating a texture, drawing surface, etc.
 651  * \param format  the format to test
 652  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 653  */
 654 static bool
 655 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 656                               enum pipe_format format,
 657                               enum pipe_texture_target target,
 658                               unsigned sample_count,
 659                               unsigned storage_sample_count,
 660                               unsigned bind)
 661 {
 662    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 663    struct sw_winsys *winsys = screen->winsys;
 664    const struct util_format_description *format_desc;
 665
 666    format_desc = util_format_description(format);
 667    if (!format_desc)
 668       return false;
 669
 670    assert(target == PIPE_BUFFER ||
 671           target == PIPE_TEXTURE_1D ||
 672           target == PIPE_TEXTURE_1D_ARRAY ||
 673           target == PIPE_TEXTURE_2D ||
 674           target == PIPE_TEXTURE_2D_ARRAY ||
 675           target == PIPE_TEXTURE_RECT ||
 676           target == PIPE_TEXTURE_3D ||
 677           target == PIPE_TEXTURE_CUBE ||
 678           target == PIPE_TEXTURE_CUBE_ARRAY);
 679
 680    if (sample_count > 1)
 681       return false;
 682
 683    if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 684       return false;
 685
 686    if (bind & PIPE_BIND_RENDER_TARGET) {
 687       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
 688          /* this is a lie actually other formats COULD exist where we would fail */
 689          if (format_desc->nr_channels < 3)
 690             return false;
 691       }
 692       else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
 693          return false;
 694
 695       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN &&
 696           format != PIPE_FORMAT_R11G11B10_FLOAT)
 697          return false;
 698
 699       assert(format_desc->block.width == 1);
 700       assert(format_desc->block.height == 1);
 701
 702       if (format_desc->is_mixed)
 703          return false;
 704
 705       if (!format_desc->is_array && !format_desc->is_bitmask &&
 706           format != PIPE_FORMAT_R11G11B10_FLOAT)
 707          return false;
 708    }
 709
 710    if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
 711        ((bind & PIPE_BIND_DISPLAY_TARGET) == 0)) {
 712       /* Disable all 3-channel formats, where channel size != 32 bits.
 713        * In some cases we run into crashes (in generate_unswizzled_blend()),
 714        * for 3-channel RGB16 variants, there was an apparent LLVM bug.
 715        * In any case, disabling the shallower 3-channel formats avoids a
 716        * number of issues with GL_ARB_copy_image support.
 717        */
 718       if (format_desc->is_array &&
 719           format_desc->nr_channels == 3 &&
 720           format_desc->block.bits != 96) {
 721          return false;
 722       }
 723    }
 724
 725    if (bind & PIPE_BIND_DISPLAY_TARGET) {
 726       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 727          return false;
 728    }
 729
 730    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 731       if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 732          return false;
 733
 734       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 735          return false;
 736
 737       /* TODO: Support stencil-only formats */
 738       if (format_desc->swizzle[0] == PIPE_SWIZZLE_NONE) {
 739          return false;
 740       }
 741    }
 742
 743    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC ||
 744        format_desc->layout == UTIL_FORMAT_LAYOUT_ATC ||
 745        format_desc->layout == UTIL_FORMAT_LAYOUT_FXT1) {
 746       /* Software decoding is not hooked up. */
 747       return false;
 748    }
 749
 750    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
 751        format != PIPE_FORMAT_ETC1_RGB8)
 752       return false;
 753
 754    /*
 755     * Everything can be supported by u_format
 756     * (those without fetch_rgba_float might be not but shouldn't hit that)
 757     */
 758
 759    return true;
 760 }
 761
 762
 763
 764
 765 static void
 766 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 767                            struct pipe_resource *resource,
 768                            unsigned level, unsigned layer,
 769                            void *context_private,
 770                            struct pipe_box *sub_box)
 771 {
 772    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 773    struct sw_winsys *winsys = screen->winsys;
 774    struct llvmpipe_resource *texture = llvmpipe_resource(resource);
 775
 776    assert(texture->dt);
 777    if (texture->dt)
 778       winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
 779 }
 780
 781 static void
 782 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 783 {
 784    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 785    struct sw_winsys *winsys = screen->winsys;
 786
 787    if (screen->cs_tpool)
 788       lp_cs_tpool_destroy(screen->cs_tpool);
 789
 790    if (screen->rast)
 791       lp_rast_destroy(screen->rast);
 792
 793    lp_jit_screen_cleanup(screen);
 794
 795    if(winsys->destroy)
 796       winsys->destroy(winsys);
 797
 798    glsl_type_singleton_decref();
 799
 800    mtx_destroy(&screen->rast_mutex);
 801    mtx_destroy(&screen->cs_mutex);
 802    FREE(screen);
 803 }
 804
 805
 806
 807
 808 /**
 809  * Fence reference counting.
 810  */
 811 static void
 812 llvmpipe_fence_reference(struct pipe_screen *screen,
 813                          struct pipe_fence_handle **ptr,
 814                          struct pipe_fence_handle *fence)
 815 {
 816    struct lp_fence **old = (struct lp_fence **) ptr;
 817    struct lp_fence *f = (struct lp_fence *) fence;
 818
 819    lp_fence_reference(old, f);
 820 }
 821
 822
 823 /**
 824  * Wait for the fence to finish.
 825  */
 826 static bool
 827 llvmpipe_fence_finish(struct pipe_screen *screen,
 828                       struct pipe_context *ctx,
 829                       struct pipe_fence_handle *fence_handle,
 830                       uint64_t timeout)
 831 {
 832    struct lp_fence *f = (struct lp_fence *) fence_handle;
 833
 834    if (!timeout)
 835       return lp_fence_signalled(f);
 836
 837    if (!lp_fence_signalled(f)) {
 838       if (timeout != PIPE_TIMEOUT_INFINITE)
 839          return lp_fence_timedwait(f, timeout);
 840
 841       lp_fence_wait(f);
 842    }
 843    return true;
 844 }
 845
 846 static uint64_t
 847 llvmpipe_get_timestamp(struct pipe_screen *_screen)
 848 {
 849    return os_time_get_nano();
 850 }
 851
 852 /**
 853  * Create a new pipe_screen object
 854  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 855  */
 856 struct pipe_screen *
 857 llvmpipe_create_screen(struct sw_winsys *winsys)
 858 {
 859    struct llvmpipe_screen *screen;
 860
 861    util_cpu_detect();
 862
 863    glsl_type_singleton_init_or_ref();
 864
 865 #ifdef DEBUG
 866    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 867 #endif
 868
 869    LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
 870
 871    screen = CALLOC_STRUCT(llvmpipe_screen);
 872    if (!screen)
 873       return NULL;
 874
 875    if (!lp_jit_screen_init(screen)) {
 876       FREE(screen);
 877       return NULL;
 878    }
 879
 880    screen->winsys = winsys;
 881
 882    screen->base.destroy = llvmpipe_destroy_screen;
 883
 884    screen->base.get_name = llvmpipe_get_name;
 885    screen->base.get_vendor = llvmpipe_get_vendor;
 886    screen->base.get_device_vendor = llvmpipe_get_vendor; // TODO should be the CPU vendor
 887    screen->base.get_param = llvmpipe_get_param;
 888    screen->base.get_shader_param = llvmpipe_get_shader_param;
 889    screen->base.get_compute_param = llvmpipe_get_compute_param;
 890    screen->base.get_paramf = llvmpipe_get_paramf;
 891    screen->base.get_compiler_options = llvmpipe_get_compiler_options;
 892    screen->base.is_format_supported = llvmpipe_is_format_supported;
 893
 894    screen->base.context_create = llvmpipe_create_context;
 895    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 896    screen->base.fence_reference = llvmpipe_fence_reference;
 897    screen->base.fence_finish = llvmpipe_fence_finish;
 898
 899    screen->base.get_timestamp = llvmpipe_get_timestamp;
 900
 901    screen->base.finalize_nir = llvmpipe_finalize_nir;
 902    llvmpipe_init_screen_resource_funcs(&screen->base);
 903
 904    screen->use_tgsi = (LP_DEBUG & DEBUG_TGSI_IR);
 905    screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
 906 #ifdef EMBEDDED_DEVICE
 907    screen->num_threads = 0;
 908 #endif
 909    screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
 910    screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
 911
 912    screen->rast = lp_rast_create(screen->num_threads);
 913    if (!screen->rast) {
 914       lp_jit_screen_cleanup(screen);
 915       FREE(screen);
 916       return NULL;
 917    }
 918    (void) mtx_init(&screen->rast_mutex, mtx_plain);
 919
 920    screen->cs_tpool = lp_cs_tpool_create(screen->num_threads);
 921    if (!screen->cs_tpool) {
 922       lp_rast_destroy(screen->rast);
 923       lp_jit_screen_cleanup(screen);
 924       FREE(screen);
 925       return NULL;
 926    }
 927    (void) mtx_init(&screen->cs_mutex, mtx_plain);
 928
 929    return &screen->base;
 930 }