src/gallium/drivers/softpipe/sp_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_format.h"
  31 #include "util/u_format_s3tc.h"
  32 #include "util/u_video.h"
  33 #include "os/os_misc.h"
  34 #include "os/os_time.h"
  35 #include "pipe/p_defines.h"
  36 #include "pipe/p_screen.h"
  37 #include "draw/draw_context.h"
  38
  39 #include "state_tracker/sw_winsys.h"
  40 #include "tgsi/tgsi_exec.h"
  41
  42 #include "sp_texture.h"
  43 #include "sp_screen.h"
  44 #include "sp_context.h"
  45 #include "sp_fence.h"
  46 #include "sp_public.h"
  47
  48 DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE)
  49
  50 static const char *
  51 softpipe_get_vendor(struct pipe_screen *screen)
  52 {
  53    return "VMware, Inc.";
  54 }
  55
  56
  57 static const char *
  58 softpipe_get_name(struct pipe_screen *screen)
  59 {
  60    return "softpipe";
  61 }
  62
  63
  64 static int
  65 softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  66 {
  67    switch (param) {
  68    case PIPE_CAP_NPOT_TEXTURES:
  69    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  70       return 1;
  71    case PIPE_CAP_TWO_SIDED_STENCIL:
  72       return 1;
  73    case PIPE_CAP_SM3:
  74       return 1;
  75    case PIPE_CAP_ANISOTROPIC_FILTER:
  76       return 1;
  77    case PIPE_CAP_POINT_SPRITE:
  78       return 1;
  79    case PIPE_CAP_MAX_RENDER_TARGETS:
  80       return PIPE_MAX_COLOR_BUFS;
  81    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  82       return 1;
  83    case PIPE_CAP_OCCLUSION_QUERY:
  84       return 1;
  85    case PIPE_CAP_QUERY_TIME_ELAPSED:
  86       return 1;
  87    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
  88       return 1;
  89    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  90       return 1;
  91    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  92       return 1;
  93    case PIPE_CAP_TEXTURE_SWIZZLE:
  94       return 1;
  95    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
  96       return 0;
  97    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  98       return SP_MAX_TEXTURE_2D_LEVELS;
  99    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 100       return SP_MAX_TEXTURE_3D_LEVELS;
 101    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 102       return SP_MAX_TEXTURE_CUBE_LEVELS;
 103    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 104       return 1;
 105    case PIPE_CAP_INDEP_BLEND_ENABLE:
 106       return 1;
 107    case PIPE_CAP_INDEP_BLEND_FUNC:
 108       return 1;
 109    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 110    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 111    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 112    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 113       return 1;
 114    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 115       return 1;
 116    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 117       return PIPE_MAX_SO_BUFFERS;
 118    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 119    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 120       return 16*4;
 121    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 122    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 123       return 1024;
 124    case PIPE_CAP_MAX_VERTEX_STREAMS:
 125       return 1;
 126    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 127       return 2048;
 128    case PIPE_CAP_PRIMITIVE_RESTART:
 129       return 1;
 130    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 131       return 1;
 132    case PIPE_CAP_TGSI_INSTANCEID:
 133    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 134    case PIPE_CAP_START_INSTANCE:
 135       return 1;
 136    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 137    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 138       return 1;
 139    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 140       return 256; /* for GL3 */
 141    case PIPE_CAP_MIN_TEXEL_OFFSET:
 142       return -8;
 143    case PIPE_CAP_MAX_TEXEL_OFFSET:
 144       return 7;
 145    case PIPE_CAP_CONDITIONAL_RENDER:
 146       return 1;
 147    case PIPE_CAP_TEXTURE_BARRIER:
 148       return 0;
 149    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 150    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
 151    case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
 152       return 1;
 153    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 154       return 0;
 155    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 156       return 330;
 157    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 158       return 0;
 159    case PIPE_CAP_COMPUTE:
 160       return 1;
 161    case PIPE_CAP_USER_VERTEX_BUFFERS:
 162    case PIPE_CAP_USER_INDEX_BUFFERS:
 163    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 164    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 165    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 166       return 1;
 167    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 168       return 16;
 169    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 170    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 171    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 172    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 173    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 174       return 0;
 175    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 176       return 64;
 177    case PIPE_CAP_QUERY_TIMESTAMP:
 178    case PIPE_CAP_CUBE_MAP_ARRAY:
 179       return 1;
 180    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 181       return 1;
 182    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 183       return 0;
 184    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 185       return 65536;
 186    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 187       return 0;
 188    case PIPE_CAP_TGSI_TEXCOORD:
 189    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 190       return 0;
 191    case PIPE_CAP_MAX_VIEWPORTS:
 192       return PIPE_MAX_VIEWPORTS;
 193    case PIPE_CAP_ENDIANNESS:
 194       return PIPE_ENDIAN_NATIVE;
 195    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 196       return 4;
 197    case PIPE_CAP_TEXTURE_GATHER_SM5:
 198    case PIPE_CAP_TEXTURE_QUERY_LOD:
 199       return 1;
 200    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 201    case PIPE_CAP_SAMPLE_SHADING:
 202    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 203       return 0;
 204    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 205       return 1;
 206    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 207       return 0;
 208    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 209       return 1;
 210    case PIPE_CAP_FAKE_SW_MSAA:
 211       return 1;
 212    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 213       return -32;
 214    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 215       return 31;
 216    case PIPE_CAP_DRAW_INDIRECT:
 217       return 1;
 218
 219    case PIPE_CAP_VENDOR_ID:
 220       return 0xFFFFFFFF;
 221    case PIPE_CAP_DEVICE_ID:
 222       return 0xFFFFFFFF;
 223    case PIPE_CAP_ACCELERATED:
 224       return 0;
 225    case PIPE_CAP_VIDEO_MEMORY: {
 226       /* XXX: Do we want to return the full amount fo system memory ? */
 227       uint64_t system_memory;
 228
 229       if (!os_get_total_physical_memory(&system_memory))
 230          return 0;
 231
 232       return (int)(system_memory >> 20);
 233    }
 234    case PIPE_CAP_UMA:
 235       return 0;
 236    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 237       return 1;
 238    case PIPE_CAP_CLIP_HALFZ:
 239    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 240    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 241       return 1;
 242    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 243    case PIPE_CAP_CULL_DISTANCE:
 244       return 1;
 245    case PIPE_CAP_VERTEXID_NOBASE:
 246       return 0;
 247    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 248       return 0;
 249    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 250       return 1;
 251    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 252    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 253    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 254    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 255    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 256    case PIPE_CAP_TGSI_TXQS:
 257    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 258    case PIPE_CAP_SHAREABLE_SHADERS:
 259    case PIPE_CAP_CLEAR_TEXTURE:
 260    case PIPE_CAP_DRAW_PARAMETERS:
 261    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 262    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 263    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 264    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 265    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 266    case PIPE_CAP_INVALIDATE_BUFFER:
 267    case PIPE_CAP_GENERATE_MIPMAP:
 268    case PIPE_CAP_STRING_MARKER:
 269    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 270    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 271    case PIPE_CAP_QUERY_MEMORY_INFO:
 272    case PIPE_CAP_PCI_GROUP:
 273    case PIPE_CAP_PCI_BUS:
 274    case PIPE_CAP_PCI_DEVICE:
 275    case PIPE_CAP_PCI_FUNCTION:
 276    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 277    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 278    case PIPE_CAP_TGSI_VOTE:
 279       return 0;
 280    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 281       return 4;
 282    }
 283    /* should only get here on unhandled cases */
 284    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 285    return 0;
 286 }
 287
 288 static int
 289 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 290 {
 291    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 292    switch(shader)
 293    {
 294    case PIPE_SHADER_FRAGMENT:
 295       return tgsi_exec_get_shader_param(param);
 296    case PIPE_SHADER_COMPUTE:
 297       return tgsi_exec_get_shader_param(param);
 298    case PIPE_SHADER_VERTEX:
 299    case PIPE_SHADER_GEOMETRY:
 300       if (sp_screen->use_llvm)
 301          return draw_get_shader_param(shader, param);
 302       else
 303          return draw_get_shader_param_no_llvm(shader, param);
 304    default:
 305       return 0;
 306    }
 307 }
 308
 309 static float
 310 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 311 {
 312    switch (param) {
 313    case PIPE_CAPF_MAX_LINE_WIDTH:
 314       /* fall-through */
 315    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 316       return 255.0; /* arbitrary */
 317    case PIPE_CAPF_MAX_POINT_WIDTH:
 318       /* fall-through */
 319    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 320       return 255.0; /* arbitrary */
 321    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 322       return 16.0;
 323    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 324       return 16.0; /* arbitrary */
 325    case PIPE_CAPF_GUARD_BAND_LEFT:
 326    case PIPE_CAPF_GUARD_BAND_TOP:
 327    case PIPE_CAPF_GUARD_BAND_RIGHT:
 328    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 329       return 0.0;
 330    }
 331    /* should only get here on unhandled cases */
 332    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 333    return 0.0;
 334 }
 335
 336 /**
 337  * Query format support for creating a texture, drawing surface, etc.
 338  * \param format  the format to test
 339  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 340  */
 341 static boolean
 342 softpipe_is_format_supported( struct pipe_screen *screen,
 343                               enum pipe_format format,
 344                               enum pipe_texture_target target,
 345                               unsigned sample_count,
 346                               unsigned bind)
 347 {
 348    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 349    const struct util_format_description *format_desc;
 350
 351    assert(target == PIPE_BUFFER ||
 352           target == PIPE_TEXTURE_1D ||
 353           target == PIPE_TEXTURE_1D_ARRAY ||
 354           target == PIPE_TEXTURE_2D ||
 355           target == PIPE_TEXTURE_2D_ARRAY ||
 356           target == PIPE_TEXTURE_RECT ||
 357           target == PIPE_TEXTURE_3D ||
 358           target == PIPE_TEXTURE_CUBE ||
 359           target == PIPE_TEXTURE_CUBE_ARRAY);
 360
 361    format_desc = util_format_description(format);
 362    if (!format_desc)
 363       return FALSE;
 364
 365    if (sample_count > 1)
 366       return FALSE;
 367
 368    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 369                PIPE_BIND_SCANOUT |
 370                PIPE_BIND_SHARED)) {
 371       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 372          return FALSE;
 373    }
 374
 375    if (bind & PIPE_BIND_RENDER_TARGET) {
 376       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 377          return FALSE;
 378
 379       /*
 380        * Although possible, it is unnatural to render into compressed or YUV
 381        * surfaces. So disable these here to avoid going into weird paths
 382        * inside the state trackers.
 383        */
 384       if (format_desc->block.width != 1 ||
 385           format_desc->block.height != 1)
 386          return FALSE;
 387    }
 388
 389    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 390       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 391          return FALSE;
 392    }
 393
 394    if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC ||
 395        format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC) {
 396       /* Software decoding is not hooked up. */
 397       return FALSE;
 398    }
 399
 400    if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
 401        ((bind & PIPE_BIND_DISPLAY_TARGET) == 0) &&
 402        target != PIPE_BUFFER) {
 403       const struct util_format_description *desc =
 404          util_format_description(format);
 405       if (desc->nr_channels == 3 && desc->is_array) {
 406          /* Don't support any 3-component formats for rendering/texturing
 407           * since we don't support the corresponding 8-bit 3 channel UNORM
 408           * formats.  This allows us to support GL_ARB_copy_image between
 409           * GL_RGB8 and GL_RGB8UI, for example.  Otherwise, we may be asked to
 410           * do a resource copy between PIPE_FORMAT_R8G8B8_UINT and
 411           * PIPE_FORMAT_R8G8B8X8_UNORM, for example, which will not work
 412           * (different bpp).
 413           */
 414          return FALSE;
 415       }
 416    }
 417
 418    if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
 419        format != PIPE_FORMAT_ETC1_RGB8)
 420       return FALSE;
 421
 422    /*
 423     * All other operations (sampling, transfer, etc).
 424     */
 425
 426    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 427       return util_format_s3tc_enabled;
 428    }
 429
 430    /*
 431     * Everything else should be supported by u_format.
 432     */
 433    return TRUE;
 434 }
 435
 436
 437 static void
 438 softpipe_destroy_screen( struct pipe_screen *screen )
 439 {
 440    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 441    struct sw_winsys *winsys = sp_screen->winsys;
 442
 443    if(winsys->destroy)
 444       winsys->destroy(winsys);
 445
 446    FREE(screen);
 447 }
 448
 449
 450 /* This is often overriden by the co-state tracker.
 451  */
 452 static void
 453 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 454                            struct pipe_resource *resource,
 455                            unsigned level, unsigned layer,
 456                            void *context_private,
 457                            struct pipe_box *sub_box)
 458 {
 459    struct softpipe_screen *screen = softpipe_screen(_screen);
 460    struct sw_winsys *winsys = screen->winsys;
 461    struct softpipe_resource *texture = softpipe_resource(resource);
 462
 463    assert(texture->dt);
 464    if (texture->dt)
 465       winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
 466 }
 467
 468 static uint64_t
 469 softpipe_get_timestamp(struct pipe_screen *_screen)
 470 {
 471    return os_time_get_nano();
 472 }
 473
 474 static int
 475 softpipe_get_compute_param(struct pipe_screen *_screen,
 476                            enum pipe_shader_ir ir_type,
 477                            enum pipe_compute_cap param,
 478                            void *ret)
 479 {
 480    switch (param) {
 481    case PIPE_COMPUTE_CAP_IR_TARGET:
 482       return 0;
 483    case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
 484       if (ret) {
 485          uint64_t *grid_size = ret;
 486          grid_size[0] = 65535;
 487          grid_size[1] = 65535;
 488          grid_size[2] = 65535;
 489       }
 490       return 3 * sizeof(uint64_t) ;
 491    case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
 492       if (ret) {
 493          uint64_t *block_size = ret;
 494          block_size[0] = 1024;
 495          block_size[1] = 1024;
 496          block_size[2] = 1024;
 497       }
 498       return 3 * sizeof(uint64_t);
 499    case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
 500       if (ret) {
 501          uint64_t *max_threads_per_block = ret;
 502          *max_threads_per_block = 1024;
 503       }
 504       return sizeof(uint64_t);
 505    case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
 506       if (ret) {
 507          uint64_t *max_local_size = ret;
 508          *max_local_size = 32768;
 509       }
 510       return sizeof(uint64_t);
 511    case PIPE_COMPUTE_CAP_GRID_DIMENSION:
 512    case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
 513    case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
 514    case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
 515    case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
 516    case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
 517    case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
 518    case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
 519    case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
 520       break;
 521    }
 522    return 0;
 523 }
 524
 525 /**
 526  * Create a new pipe_screen object
 527  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 528  */
 529 struct pipe_screen *
 530 softpipe_create_screen(struct sw_winsys *winsys)
 531 {
 532    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 533
 534    if (!screen)
 535       return NULL;
 536
 537    screen->winsys = winsys;
 538
 539    screen->base.destroy = softpipe_destroy_screen;
 540
 541    screen->base.get_name = softpipe_get_name;
 542    screen->base.get_vendor = softpipe_get_vendor;
 543    screen->base.get_device_vendor = softpipe_get_vendor; // TODO should be the CPU vendor
 544    screen->base.get_param = softpipe_get_param;
 545    screen->base.get_shader_param = softpipe_get_shader_param;
 546    screen->base.get_paramf = softpipe_get_paramf;
 547    screen->base.get_timestamp = softpipe_get_timestamp;
 548    screen->base.is_format_supported = softpipe_is_format_supported;
 549    screen->base.context_create = softpipe_create_context;
 550    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 551    screen->base.get_compute_param = softpipe_get_compute_param;
 552    screen->use_llvm = debug_get_option_use_llvm();
 553
 554    util_format_s3tc_init();
 555
 556    softpipe_init_screen_texture_funcs(&screen->base);
 557    softpipe_init_screen_fence_funcs(&screen->base);
 558
 559    return &screen->base;
 560 }