src/gallium/drivers/vc4/vc4_screen.c

   1 /*
   2  * Copyright © 2014 Broadcom
   3  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 #include "os/os_misc.h"
  26 #include "pipe/p_defines.h"
  27 #include "pipe/p_screen.h"
  28 #include "pipe/p_state.h"
  29
  30 #include "util/u_debug.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_format.h"
  33 #include "util/ralloc.h"
  34
  35 #include "vc4_screen.h"
  36 #include "vc4_context.h"
  37 #include "vc4_resource.h"
  38
  39 static const struct debug_named_value debug_options[] = {
  40         { "cl",       VC4_DEBUG_CL,
  41           "Dump command list during creation" },
  42         { "qpu",      VC4_DEBUG_QPU,
  43           "Dump generated QPU instructions" },
  44         { "qir",      VC4_DEBUG_QIR,
  45           "Dump QPU IR during program compile" },
  46         { "nir",      VC4_DEBUG_NIR,
  47           "Dump NIR during program compile" },
  48         { "tgsi",     VC4_DEBUG_TGSI,
  49           "Dump TGSI during program compile" },
  50         { "shaderdb", VC4_DEBUG_SHADERDB,
  51           "Dump program compile information for shader-db analysis" },
  52         { "perf",     VC4_DEBUG_PERF,
  53           "Print during performance-related events" },
  54         { "norast",   VC4_DEBUG_NORAST,
  55           "Skip actual hardware execution of commands" },
  56         { "always_flush", VC4_DEBUG_ALWAYS_FLUSH,
  57           "Flush after each draw call" },
  58         { "always_sync", VC4_DEBUG_ALWAYS_SYNC,
  59           "Wait for finish after each flush" },
  60         { NULL }
  61 };
  62
  63 DEBUG_GET_ONCE_FLAGS_OPTION(vc4_debug, "VC4_DEBUG", debug_options, 0)
  64 uint32_t vc4_debug;
  65
  66 static const char *
  67 vc4_screen_get_name(struct pipe_screen *pscreen)
  68 {
  69         return "VC4";
  70 }
  71
  72 static const char *
  73 vc4_screen_get_vendor(struct pipe_screen *pscreen)
  74 {
  75         return "Broadcom";
  76 }
  77
  78 static void
  79 vc4_screen_destroy(struct pipe_screen *pscreen)
  80 {
  81         vc4_bufmgr_destroy(pscreen);
  82         ralloc_free(pscreen);
  83 }
  84
  85 static int
  86 vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
  87 {
  88         switch (param) {
  89                 /* Supported features (boolean caps). */
  90         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
  91         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
  92         case PIPE_CAP_NPOT_TEXTURES:
  93         case PIPE_CAP_USER_CONSTANT_BUFFERS:
  94         case PIPE_CAP_TEXTURE_SHADOW_MAP:
  95         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  96         case PIPE_CAP_TWO_SIDED_STENCIL:
  97                 return 1;
  98
  99                 /* lying for GL 2.0 */
 100         case PIPE_CAP_OCCLUSION_QUERY:
 101         case PIPE_CAP_POINT_SPRITE:
 102                 return 1;
 103
 104         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 105                 return 256;
 106
 107         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 108                 return 120;
 109
 110         case PIPE_CAP_MAX_VIEWPORTS:
 111                 return 1;
 112
 113         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 114         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 115                 return 1;
 116
 117         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 118                 return 1;
 119
 120                 /* Unsupported features. */
 121         case PIPE_CAP_ANISOTROPIC_FILTER:
 122         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 123         case PIPE_CAP_CUBE_MAP_ARRAY:
 124         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 125         case PIPE_CAP_TEXTURE_SWIZZLE:
 126         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 127         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 128         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 129         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 130         case PIPE_CAP_TGSI_INSTANCEID:
 131         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 132         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 133         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 134         case PIPE_CAP_COMPUTE:
 135         case PIPE_CAP_START_INSTANCE:
 136         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 137         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 138         case PIPE_CAP_TGSI_TEXCOORD:
 139         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 140         case PIPE_CAP_CONDITIONAL_RENDER:
 141         case PIPE_CAP_PRIMITIVE_RESTART:
 142         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 143         case PIPE_CAP_TEXTURE_BARRIER:
 144         case PIPE_CAP_SM3:
 145         case PIPE_CAP_INDEP_BLEND_ENABLE:
 146         case PIPE_CAP_INDEP_BLEND_FUNC:
 147         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 148         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 149         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 150         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 151         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 152         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 153         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 154         case PIPE_CAP_USER_VERTEX_BUFFERS:
 155         case PIPE_CAP_USER_INDEX_BUFFERS:
 156         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 157         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 158         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 159         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 160         case PIPE_CAP_TEXTURE_GATHER_SM5:
 161         case PIPE_CAP_FAKE_SW_MSAA:
 162         case PIPE_CAP_TEXTURE_QUERY_LOD:
 163         case PIPE_CAP_SAMPLE_SHADING:
 164         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 165         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 166         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 167         case PIPE_CAP_MAX_TEXEL_OFFSET:
 168         case PIPE_CAP_MAX_VERTEX_STREAMS:
 169         case PIPE_CAP_DRAW_INDIRECT:
 170         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 171         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 172         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 173         case PIPE_CAP_CLIP_HALFZ:
 174         case PIPE_CAP_VERTEXID_NOBASE:
 175         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 176         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 177         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 178                 return 0;
 179
 180                 /* Stream output. */
 181         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 182         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 183         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 184         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 185                 return 0;
 186
 187                 /* Geometry shader output, unsupported. */
 188         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 189         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 190                 return 0;
 191
 192                 /* Texturing. */
 193         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 194         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 195                 return VC4_MAX_MIP_LEVELS;
 196         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 197                 /* Note: Not supported in hardware, just faking it. */
 198                 return 5;
 199         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 200                 return 0;
 201
 202                 /* Render targets. */
 203         case PIPE_CAP_MAX_RENDER_TARGETS:
 204                 return 1;
 205
 206                 /* Queries. */
 207         case PIPE_CAP_QUERY_TIME_ELAPSED:
 208         case PIPE_CAP_QUERY_TIMESTAMP:
 209                 return 0;
 210
 211         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 212         case PIPE_CAP_MIN_TEXEL_OFFSET:
 213                 return 0;
 214
 215         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 216                 return 2048;
 217
 218         case PIPE_CAP_ENDIANNESS:
 219                 return PIPE_ENDIAN_LITTLE;
 220
 221         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 222                 return 64;
 223
 224         case PIPE_CAP_VENDOR_ID:
 225                 return 0x14E4;
 226         case PIPE_CAP_DEVICE_ID:
 227                 return 0xFFFFFFFF;
 228         case PIPE_CAP_ACCELERATED:
 229                 return 1;
 230         case PIPE_CAP_VIDEO_MEMORY: {
 231                 uint64_t system_memory;
 232
 233                 if (!os_get_total_physical_memory(&system_memory))
 234                         return 0;
 235
 236                 return (int)(system_memory >> 20);
 237         }
 238         case PIPE_CAP_UMA:
 239                 return 1;
 240
 241         default:
 242                 fprintf(stderr, "unknown param %d\n", param);
 243                 return 0;
 244         }
 245 }
 246
 247 static float
 248 vc4_screen_get_paramf(struct pipe_screen *pscreen, enum pipe_capf param)
 249 {
 250         switch (param) {
 251         case PIPE_CAPF_MAX_LINE_WIDTH:
 252         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 253                 return 32;
 254
 255         case PIPE_CAPF_MAX_POINT_WIDTH:
 256         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 257                 return 512.0f;
 258
 259         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 260                 return 0.0f;
 261         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 262                 return 0.0f;
 263         case PIPE_CAPF_GUARD_BAND_LEFT:
 264         case PIPE_CAPF_GUARD_BAND_TOP:
 265         case PIPE_CAPF_GUARD_BAND_RIGHT:
 266         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 267                 return 0.0f;
 268         default:
 269                 fprintf(stderr, "unknown paramf %d\n", param);
 270                 return 0;
 271         }
 272 }
 273
 274 static int
 275 vc4_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
 276                            enum pipe_shader_cap param)
 277 {
 278         if (shader != PIPE_SHADER_VERTEX &&
 279             shader != PIPE_SHADER_FRAGMENT) {
 280                 return 0;
 281         }
 282
 283         /* this is probably not totally correct.. but it's a start: */
 284         switch (param) {
 285         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 286         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 287         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 288         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 289                 return 16384;
 290         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 291                 return 0;
 292         case PIPE_SHADER_CAP_MAX_INPUTS:
 293                 if (shader == PIPE_SHADER_FRAGMENT)
 294                         return 8;
 295                 else
 296                         return 16;
 297         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 298                 return shader == PIPE_SHADER_FRAGMENT ? 1 : 8;
 299         case PIPE_SHADER_CAP_MAX_TEMPS:
 300                 return 256; /* GL_MAX_PROGRAM_TEMPORARIES_ARB */
 301         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 302                 return 16 * 1024 * sizeof(float);
 303         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 304                 return 1;
 305         case PIPE_SHADER_CAP_MAX_PREDS:
 306                 return 0; /* nothing uses this */
 307         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 308                 return 0;
 309         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 310         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 311         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 312                 return 0;
 313         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 314                 return 1;
 315         case PIPE_SHADER_CAP_SUBROUTINES:
 316                 return 0;
 317         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 318                 return 0;
 319         case PIPE_SHADER_CAP_INTEGERS:
 320                 return 1;
 321         case PIPE_SHADER_CAP_DOUBLES:
 322         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 323         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 324         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 325                 return 0;
 326         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 327         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 328                 return VC4_MAX_TEXTURE_SAMPLERS;
 329         case PIPE_SHADER_CAP_PREFERRED_IR:
 330                 return PIPE_SHADER_IR_TGSI;
 331         default:
 332                 fprintf(stderr, "unknown shader param %d\n", param);
 333                 return 0;
 334         }
 335         return 0;
 336 }
 337
 338 static boolean
 339 vc4_screen_is_format_supported(struct pipe_screen *pscreen,
 340                                enum pipe_format format,
 341                                enum pipe_texture_target target,
 342                                unsigned sample_count,
 343                                unsigned usage)
 344 {
 345         unsigned retval = 0;
 346
 347         if ((target >= PIPE_MAX_TEXTURE_TYPES) ||
 348             (sample_count > 1) ||
 349             !util_format_is_supported(format, usage)) {
 350                 return FALSE;
 351         }
 352
 353         if (usage & PIPE_BIND_VERTEX_BUFFER) {
 354                 switch (format) {
 355                 case PIPE_FORMAT_R32G32B32A32_FLOAT:
 356                 case PIPE_FORMAT_R32G32B32_FLOAT:
 357                 case PIPE_FORMAT_R32G32_FLOAT:
 358                 case PIPE_FORMAT_R32_FLOAT:
 359                 case PIPE_FORMAT_R32G32B32A32_SNORM:
 360                 case PIPE_FORMAT_R32G32B32_SNORM:
 361                 case PIPE_FORMAT_R32G32_SNORM:
 362                 case PIPE_FORMAT_R32_SNORM:
 363                 case PIPE_FORMAT_R32G32B32A32_SSCALED:
 364                 case PIPE_FORMAT_R32G32B32_SSCALED:
 365                 case PIPE_FORMAT_R32G32_SSCALED:
 366                 case PIPE_FORMAT_R32_SSCALED:
 367                 case PIPE_FORMAT_R16G16B16A16_UNORM:
 368                 case PIPE_FORMAT_R16G16B16_UNORM:
 369                 case PIPE_FORMAT_R16G16_UNORM:
 370                 case PIPE_FORMAT_R16_UNORM:
 371                 case PIPE_FORMAT_R16G16B16A16_SNORM:
 372                 case PIPE_FORMAT_R16G16B16_SNORM:
 373                 case PIPE_FORMAT_R16G16_SNORM:
 374                 case PIPE_FORMAT_R16_SNORM:
 375                 case PIPE_FORMAT_R16G16B16A16_USCALED:
 376                 case PIPE_FORMAT_R16G16B16_USCALED:
 377                 case PIPE_FORMAT_R16G16_USCALED:
 378                 case PIPE_FORMAT_R16_USCALED:
 379                 case PIPE_FORMAT_R16G16B16A16_SSCALED:
 380                 case PIPE_FORMAT_R16G16B16_SSCALED:
 381                 case PIPE_FORMAT_R16G16_SSCALED:
 382                 case PIPE_FORMAT_R16_SSCALED:
 383                 case PIPE_FORMAT_R8G8B8A8_UNORM:
 384                 case PIPE_FORMAT_R8G8B8_UNORM:
 385                 case PIPE_FORMAT_R8G8_UNORM:
 386                 case PIPE_FORMAT_R8_UNORM:
 387                 case PIPE_FORMAT_R8G8B8A8_SNORM:
 388                 case PIPE_FORMAT_R8G8B8_SNORM:
 389                 case PIPE_FORMAT_R8G8_SNORM:
 390                 case PIPE_FORMAT_R8_SNORM:
 391                 case PIPE_FORMAT_R8G8B8A8_USCALED:
 392                 case PIPE_FORMAT_R8G8B8_USCALED:
 393                 case PIPE_FORMAT_R8G8_USCALED:
 394                 case PIPE_FORMAT_R8_USCALED:
 395                 case PIPE_FORMAT_R8G8B8A8_SSCALED:
 396                 case PIPE_FORMAT_R8G8B8_SSCALED:
 397                 case PIPE_FORMAT_R8G8_SSCALED:
 398                 case PIPE_FORMAT_R8_SSCALED:
 399                         retval |= PIPE_BIND_VERTEX_BUFFER;
 400                         break;
 401                 default:
 402                         break;
 403                 }
 404         }
 405
 406         if ((usage & PIPE_BIND_RENDER_TARGET) &&
 407             vc4_rt_format_supported(format)) {
 408                 retval |= PIPE_BIND_RENDER_TARGET;
 409         }
 410
 411         if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 412             (vc4_tex_format_supported(format))) {
 413                 retval |= PIPE_BIND_SAMPLER_VIEW;
 414         }
 415
 416         if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
 417             (format == PIPE_FORMAT_S8_UINT_Z24_UNORM ||
 418              format == PIPE_FORMAT_X8Z24_UNORM)) {
 419                 retval |= PIPE_BIND_DEPTH_STENCIL;
 420         }
 421
 422         if ((usage & PIPE_BIND_INDEX_BUFFER) &&
 423             (format == PIPE_FORMAT_I8_UINT ||
 424              format == PIPE_FORMAT_I16_UINT)) {
 425                 retval |= PIPE_BIND_INDEX_BUFFER;
 426         }
 427
 428         if (usage & PIPE_BIND_TRANSFER_READ)
 429                 retval |= PIPE_BIND_TRANSFER_READ;
 430         if (usage & PIPE_BIND_TRANSFER_WRITE)
 431                 retval |= PIPE_BIND_TRANSFER_WRITE;
 432
 433 #if 0
 434         if (retval != usage) {
 435                 fprintf(stderr,
 436                         "not supported: format=%s, target=%d, sample_count=%d, "
 437                         "usage=0x%x, retval=0x%x\n", util_format_name(format),
 438                         target, sample_count, usage, retval);
 439         }
 440 #endif
 441
 442         return retval == usage;
 443 }
 444
 445 struct pipe_screen *
 446 vc4_screen_create(int fd)
 447 {
 448         struct vc4_screen *screen = rzalloc(NULL, struct vc4_screen);
 449         struct pipe_screen *pscreen;
 450
 451         pscreen = &screen->base;
 452
 453         pscreen->destroy = vc4_screen_destroy;
 454         pscreen->get_param = vc4_screen_get_param;
 455         pscreen->get_paramf = vc4_screen_get_paramf;
 456         pscreen->get_shader_param = vc4_screen_get_shader_param;
 457         pscreen->context_create = vc4_context_create;
 458         pscreen->is_format_supported = vc4_screen_is_format_supported;
 459
 460         screen->fd = fd;
 461         make_empty_list(&screen->bo_cache.time_list);
 462
 463         vc4_fence_init(screen);
 464
 465         vc4_debug = debug_get_option_vc4_debug();
 466         if (vc4_debug & VC4_DEBUG_SHADERDB)
 467                 vc4_debug |= VC4_DEBUG_NORAST;
 468
 469 #if USE_VC4_SIMULATOR
 470         vc4_simulator_init(screen);
 471 #endif
 472
 473         vc4_resource_screen_init(pscreen);
 474
 475         pscreen->get_name = vc4_screen_get_name;
 476         pscreen->get_vendor = vc4_screen_get_vendor;
 477         pscreen->get_device_vendor = vc4_screen_get_vendor;
 478
 479         return pscreen;
 480 }
 481
 482 boolean
 483 vc4_screen_bo_get_handle(struct pipe_screen *pscreen,
 484                          struct vc4_bo *bo,
 485                          unsigned stride,
 486                          struct winsys_handle *whandle)
 487 {
 488         whandle->stride = stride;
 489
 490         switch (whandle->type) {
 491         case DRM_API_HANDLE_TYPE_SHARED:
 492                 return vc4_bo_flink(bo, &whandle->handle);
 493         case DRM_API_HANDLE_TYPE_KMS:
 494                 whandle->handle = bo->handle;
 495                 return TRUE;
 496         case DRM_API_HANDLE_TYPE_FD:
 497                 whandle->handle = vc4_bo_get_dmabuf(bo);
 498                 return whandle->handle != -1;
 499         }
 500
 501         return FALSE;
 502 }
 503
 504 struct vc4_bo *
 505 vc4_screen_bo_from_handle(struct pipe_screen *pscreen,
 506                           struct winsys_handle *whandle)
 507 {
 508         struct vc4_screen *screen = vc4_screen(pscreen);
 509
 510         switch (whandle->type) {
 511         case DRM_API_HANDLE_TYPE_SHARED:
 512                 return vc4_bo_open_name(screen, whandle->handle, whandle->stride);
 513         case DRM_API_HANDLE_TYPE_FD:
 514                 return vc4_bo_open_dmabuf(screen, whandle->handle, whandle->stride);
 515         default:
 516                 fprintf(stderr,
 517                         "Attempt to import unsupported handle type %d\n",
 518                         whandle->type);
 519                 return NULL;
 520         }
 521 }