src/gallium/drivers/panfrost/pan_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   4  * Copyright 2014 Broadcom
   5  * Copyright 2018 Alyssa Rosenzweig
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the
  17  * next paragraph) shall be included in all copies or substantial portions
  18  * of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  23  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  24  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  **************************************************************************/
  29
  30
  31 #include "util/u_memory.h"
  32 #include "util/u_format.h"
  33 #include "util/u_format_s3tc.h"
  34 #include "util/u_video.h"
  35 #include "util/os_time.h"
  36 #include "pipe/p_defines.h"
  37 #include "pipe/p_screen.h"
  38 #include "draw/draw_context.h"
  39 #include <xf86drm.h>
  40
  41 #include <fcntl.h>
  42
  43 #include "drm_fourcc.h"
  44
  45 #include "pan_screen.h"
  46 #include "pan_resource.h"
  47 #include "pan_public.h"
  48
  49 #include "pan_context.h"
  50
  51 static const char *
  52 panfrost_get_name(struct pipe_screen *screen)
  53 {
  54         return "panfrost";
  55 }
  56
  57 static const char *
  58 panfrost_get_vendor(struct pipe_screen *screen)
  59 {
  60         return "panfrost";
  61 }
  62
  63 static const char *
  64 panfrost_get_device_vendor(struct pipe_screen *screen)
  65 {
  66         return "Arm";
  67 }
  68
  69 static int
  70 panfrost_get_param(struct pipe_screen *screen, enum pipe_cap param)
  71 {
  72         switch (param) {
  73         case PIPE_CAP_NPOT_TEXTURES:
  74         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  75         case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
  76                 return 1;
  77
  78         case PIPE_CAP_SM3:
  79                 return 1;
  80
  81         case PIPE_CAP_POINT_SPRITE:
  82                 return 1;
  83
  84         case PIPE_CAP_MAX_RENDER_TARGETS:
  85                 return PIPE_MAX_COLOR_BUFS;
  86
  87         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  88                 return 1;
  89
  90         case PIPE_CAP_OCCLUSION_QUERY:
  91         case PIPE_CAP_QUERY_TIME_ELAPSED:
  92         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
  93                 return 1; /* TODO: Queries */
  94
  95         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  96                 return 1;
  97
  98         case PIPE_CAP_TEXTURE_SWIZZLE:
  99                 return 1;
 100
 101         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 102                 return 0;
 103
 104         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 105         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 106         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 107                 return 13;
 108
 109         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 110                 return 1;
 111
 112         case PIPE_CAP_INDEP_BLEND_ENABLE:
 113                 return 1;
 114
 115         case PIPE_CAP_INDEP_BLEND_FUNC:
 116                 return 1;
 117
 118         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 119         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 120         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 121         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 122                 return 1;
 123
 124         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 125                 return 1;
 126
 127         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 128                 return 0; /* no streamout */
 129
 130         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 131         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 132                 return 16 * 4;
 133
 134         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 135         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 136                 return 1024;
 137
 138         case PIPE_CAP_MAX_VERTEX_STREAMS:
 139                 return 1;
 140
 141         case PIPE_CAP_PRIMITIVE_RESTART:
 142                 return 0; /* We don't understand this yet */
 143
 144         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 145                 return 1;
 146
 147         case PIPE_CAP_TGSI_INSTANCEID:
 148         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 149         case PIPE_CAP_START_INSTANCE:
 150                 return 0; /* TODO: Instances */
 151
 152         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 153         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 154                 return 1;
 155
 156         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 157                 return 256; /* for GL3 */
 158
 159         case PIPE_CAP_MIN_TEXEL_OFFSET:
 160                 return -8;
 161
 162         case PIPE_CAP_MAX_TEXEL_OFFSET:
 163                 return 7;
 164
 165         case PIPE_CAP_CONDITIONAL_RENDER:
 166                 return 1;
 167
 168         case PIPE_CAP_TEXTURE_BARRIER:
 169                 return 0;
 170
 171         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 172         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
 173         case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
 174                 return 1;
 175
 176         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 177                 return 0;
 178
 179         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 180                 return 330;
 181
 182         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 183         case PIPE_CAP_TGSI_TEX_TXF_LZ:
 184                 return 0;
 185
 186         case PIPE_CAP_COMPUTE:
 187                 return 0;
 188
 189         case PIPE_CAP_USER_VERTEX_BUFFERS: /* XXX XXX */
 190         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 191                 return 0;
 192
 193         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 194         case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 195         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 196         case PIPE_CAP_DOUBLES:
 197         case PIPE_CAP_INT64:
 198         case PIPE_CAP_INT64_DIVMOD:
 199                 return 1;
 200
 201         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 202                 return 16;
 203
 204         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 205         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 206         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 207         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 208         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 209                 return 0;
 210
 211         case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
 212                 return 0xffff;
 213
 214         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 215                 return 64;
 216
 217         case PIPE_CAP_QUERY_TIMESTAMP:
 218         case PIPE_CAP_CUBE_MAP_ARRAY:
 219                 return 1;
 220
 221         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 222                 return 1;
 223
 224         case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 225                 return 0;
 226
 227         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 228                 return 65536;
 229
 230         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 231                 return 0;
 232
 233         case PIPE_CAP_TGSI_TEXCOORD:
 234                 return 1; /* XXX: What should this me exactly? */
 235
 236         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 237                 return 0;
 238
 239         case PIPE_CAP_MAX_VIEWPORTS:
 240                 return PIPE_MAX_VIEWPORTS;
 241
 242         case PIPE_CAP_ENDIANNESS:
 243                 return PIPE_ENDIAN_NATIVE;
 244
 245         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 246                 return 4;
 247
 248         case PIPE_CAP_TEXTURE_GATHER_SM5:
 249         case PIPE_CAP_TEXTURE_QUERY_LOD:
 250                 return 1;
 251
 252         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 253         case PIPE_CAP_SAMPLE_SHADING:
 254         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 255                 return 0;
 256
 257         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 258                 return 1;
 259
 260         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 261                 return 0;
 262
 263         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 264                 return 1;
 265
 266         case PIPE_CAP_FAKE_SW_MSAA:
 267                 return 1;
 268
 269         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 270                 return -32;
 271
 272         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 273                 return 31;
 274
 275         case PIPE_CAP_DRAW_INDIRECT:
 276                 return 1;
 277
 278         case PIPE_CAP_QUERY_SO_OVERFLOW:
 279                 return 1;
 280
 281         case PIPE_CAP_VENDOR_ID:
 282                 return 0xFFFFFFFF;
 283
 284         case PIPE_CAP_DEVICE_ID:
 285                 return 0xFFFFFFFF;
 286
 287         case PIPE_CAP_ACCELERATED:
 288                 return 1;
 289
 290         case PIPE_CAP_VIDEO_MEMORY: {
 291                 /* XXX: Do we want to return the full amount fo system memory ? */
 292                 uint64_t system_memory;
 293
 294                 if (!os_get_total_physical_memory(&system_memory))
 295                         return 0;
 296
 297                 if (sizeof(void *) == 4)
 298                         /* Cap to 2 GB on 32 bits system. We do this because panfrost does
 299                          * eat application memory, which is quite limited on 32 bits. App
 300                          * shouldn't expect too much available memory. */
 301                         system_memory = MIN2(system_memory, 2048 << 20);
 302
 303                 return (int)(system_memory >> 20);
 304         }
 305
 306         case PIPE_CAP_UMA:
 307                 return 0;
 308
 309         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 310                 return 1;
 311
 312         case PIPE_CAP_CLIP_HALFZ:
 313         case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 314         case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 315                 return 1;
 316
 317         case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 318         case PIPE_CAP_CULL_DISTANCE:
 319                 return 1;
 320
 321         case PIPE_CAP_VERTEXID_NOBASE:
 322                 return 0;
 323
 324         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 325                 return 0;
 326
 327         case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 328         case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 329                 return 1;
 330
 331         case PIPE_CAP_CLEAR_TEXTURE:
 332                 return 1;
 333
 334         case PIPE_CAP_ANISOTROPIC_FILTER:
 335         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 336         case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 337         case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 338         case PIPE_CAP_DEPTH_BOUNDS_TEST:
 339         case PIPE_CAP_TGSI_TXQS:
 340         case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 341         case PIPE_CAP_SHAREABLE_SHADERS:
 342         case PIPE_CAP_DRAW_PARAMETERS:
 343         case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 344         case PIPE_CAP_MULTI_DRAW_INDIRECT:
 345         case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 346         case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 347         case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 348         case PIPE_CAP_INVALIDATE_BUFFER:
 349         case PIPE_CAP_GENERATE_MIPMAP:
 350         case PIPE_CAP_STRING_MARKER:
 351         case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 352         case PIPE_CAP_QUERY_BUFFER_OBJECT:
 353         case PIPE_CAP_QUERY_MEMORY_INFO:
 354         case PIPE_CAP_PCI_GROUP:
 355         case PIPE_CAP_PCI_BUS:
 356         case PIPE_CAP_PCI_DEVICE:
 357         case PIPE_CAP_PCI_FUNCTION:
 358         case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 359         case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 360         case PIPE_CAP_TGSI_VOTE:
 361         case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 362         case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 363         case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 364         case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 365         case PIPE_CAP_NATIVE_FENCE_FD:
 366         case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 367         case PIPE_CAP_TGSI_FS_FBFETCH:
 368         case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 369         case PIPE_CAP_TGSI_CLOCK:
 370         case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 371         case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 372         case PIPE_CAP_TGSI_BALLOT:
 373         case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 374         case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 375         case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 376         case PIPE_CAP_POST_DEPTH_COVERAGE:
 377         case PIPE_CAP_BINDLESS_TEXTURE:
 378         case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 379         case PIPE_CAP_MEMOBJ:
 380         case PIPE_CAP_LOAD_CONSTBUF:
 381         case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 382         case PIPE_CAP_TILE_RASTER_ORDER:
 383         case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 384         case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 385         case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 386         case PIPE_CAP_FENCE_SIGNAL:
 387         case PIPE_CAP_CONSTBUF0_FLAGS:
 388                 return 0;
 389
 390         case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 391                 return 4;
 392
 393         default:
 394                 debug_printf("Unexpected PIPE_CAP %d query\n", param);
 395                 return 0;
 396         }
 397 }
 398
 399 static int
 400 panfrost_get_shader_param(struct pipe_screen *screen,
 401                           enum pipe_shader_type shader,
 402                           enum pipe_shader_cap param)
 403 {
 404         if (shader != PIPE_SHADER_VERTEX &&
 405                         shader != PIPE_SHADER_FRAGMENT) {
 406                 return 0;
 407         }
 408
 409         /* this is probably not totally correct.. but it's a start: */
 410         switch (param) {
 411         case PIPE_SHADER_CAP_SCALAR_ISA:
 412                 return 0;
 413
 414         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 415         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 416         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 417         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 418                 return 16384;
 419
 420         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 421                 return 1024;
 422
 423         case PIPE_SHADER_CAP_MAX_INPUTS:
 424                 return 16;
 425
 426         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 427                 return shader == PIPE_SHADER_FRAGMENT ? 1 : 8;
 428
 429         case PIPE_SHADER_CAP_MAX_TEMPS:
 430                 return 256; /* GL_MAX_PROGRAM_TEMPORARIES_ARB */
 431
 432         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 433                 return 16 * 1024 * sizeof(float);
 434
 435         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 436                 return 1;
 437
 438         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 439                 return 0;
 440
 441         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 442         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 443         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 444                 return 0;
 445
 446         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 447                 return 1;
 448
 449         case PIPE_SHADER_CAP_SUBROUTINES:
 450                 return 0;
 451
 452         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 453                 return 0;
 454
 455         case PIPE_SHADER_CAP_INTEGERS:
 456                 return 1;
 457
 458         case PIPE_SHADER_CAP_INT64_ATOMICS:
 459         case PIPE_SHADER_CAP_FP16:
 460         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 461         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 462         case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
 463         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 464         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 465                 return 0;
 466
 467         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 468         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 469                 return 16; /* XXX: How many? */
 470
 471         case PIPE_SHADER_CAP_PREFERRED_IR:
 472                 return PIPE_SHADER_IR_NIR;
 473
 474         case PIPE_SHADER_CAP_SUPPORTED_IRS:
 475                 return 0;
 476
 477         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 478                 return 32;
 479
 480         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 481         case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 482         case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 483         case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
 484         case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
 485         case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
 486                 return 0;
 487
 488         default:
 489                 fprintf(stderr, "unknown shader param %d\n", param);
 490                 return 0;
 491         }
 492
 493         return 0;
 494 }
 495
 496 static float
 497 panfrost_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 498 {
 499         switch (param) {
 500         case PIPE_CAPF_MAX_LINE_WIDTH:
 501
 502         /* fall-through */
 503         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 504                 return 255.0; /* arbitrary */
 505
 506         case PIPE_CAPF_MAX_POINT_WIDTH:
 507
 508         /* fall-through */
 509         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 510                 return 255.0; /* arbitrary */
 511
 512         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 513                 return 16.0;
 514
 515         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 516                 return 16.0; /* arbitrary */
 517
 518         default:
 519                 debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 520                 return 0.0;
 521         }
 522 }
 523
 524 /**
 525  * Query format support for creating a texture, drawing surface, etc.
 526  * \param format  the format to test
 527  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 528  */
 529 static boolean
 530 panfrost_is_format_supported( struct pipe_screen *screen,
 531                               enum pipe_format format,
 532                               enum pipe_texture_target target,
 533                               unsigned sample_count,
 534                               unsigned storage_sample_count,
 535                               unsigned bind)
 536 {
 537         const struct util_format_description *format_desc;
 538
 539         assert(target == PIPE_BUFFER ||
 540                target == PIPE_TEXTURE_1D ||
 541                target == PIPE_TEXTURE_1D_ARRAY ||
 542                target == PIPE_TEXTURE_2D ||
 543                target == PIPE_TEXTURE_2D_ARRAY ||
 544                target == PIPE_TEXTURE_RECT ||
 545                target == PIPE_TEXTURE_3D ||
 546                target == PIPE_TEXTURE_CUBE ||
 547                target == PIPE_TEXTURE_CUBE_ARRAY);
 548
 549         format_desc = util_format_description(format);
 550
 551         if (!format_desc)
 552                 return FALSE;
 553
 554         if (sample_count > 1)
 555                 return FALSE;
 556
 557         /* Format wishlist */
 558         if (format == PIPE_FORMAT_Z24X8_UNORM || format == PIPE_FORMAT_X8Z24_UNORM)
 559                 return FALSE;
 560
 561         if (bind & PIPE_BIND_RENDER_TARGET) {
 562                 /* We don't support rendering into anything but RGBA8 yet. We
 563                  * need more formats for spec compliance, but for now, honesty
 564                  * is the best policy <3 */
 565
 566                 if (!util_format_is_rgba8_variant(format_desc))
 567                         return FALSE;
 568
 569                 if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 570                         return FALSE;
 571
 572                 /*
 573                  * Although possible, it is unnatural to render into compressed or YUV
 574                  * surfaces. So disable these here to avoid going into weird paths
 575                  * inside the state trackers.
 576                  */
 577                 if (format_desc->block.width != 1 ||
 578                                 format_desc->block.height != 1)
 579                         return FALSE;
 580         }
 581
 582         if (bind & PIPE_BIND_DEPTH_STENCIL) {
 583                 if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 584                         return FALSE;
 585         }
 586
 587         if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC ||
 588                         format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC) {
 589                 /* Compressed formats not yet hooked up. */
 590                 return FALSE;
 591         }
 592
 593         if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
 594                         ((bind & PIPE_BIND_DISPLAY_TARGET) == 0) &&
 595                         target != PIPE_BUFFER) {
 596                 const struct util_format_description *desc =
 597                         util_format_description(format);
 598
 599                 if (desc->nr_channels == 3 && desc->is_array) {
 600                         /* Don't support any 3-component formats for rendering/texturing
 601                          * since we don't support the corresponding 8-bit 3 channel UNORM
 602                          * formats.  This allows us to support GL_ARB_copy_image between
 603                          * GL_RGB8 and GL_RGB8UI, for example.  Otherwise, we may be asked to
 604                          * do a resource copy between PIPE_FORMAT_R8G8B8_UINT and
 605                          * PIPE_FORMAT_R8G8B8X8_UNORM, for example, which will not work
 606                          * (different bpp).
 607                          */
 608                         return FALSE;
 609                 }
 610         }
 611
 612         return TRUE;
 613 }
 614
 615
 616 static void
 617 panfrost_destroy_screen( struct pipe_screen *screen )
 618 {
 619         FREE(screen);
 620 }
 621
 622 static void
 623 panfrost_flush_frontbuffer(struct pipe_screen *_screen,
 624                            struct pipe_resource *resource,
 625                            unsigned level, unsigned layer,
 626                            void *context_private,
 627                            struct pipe_box *sub_box)
 628 {
 629         /* TODO: Display target integration */
 630 }
 631
 632 static uint64_t
 633 panfrost_get_timestamp(struct pipe_screen *_screen)
 634 {
 635         return os_time_get_nano();
 636 }
 637
 638 static void
 639 panfrost_fence_reference(struct pipe_screen *screen,
 640                          struct pipe_fence_handle **ptr,
 641                          struct pipe_fence_handle *fence)
 642 {
 643         *ptr = fence;
 644 }
 645
 646 static boolean
 647 panfrost_fence_finish(struct pipe_screen *screen,
 648                       struct pipe_context *ctx,
 649                       struct pipe_fence_handle *fence,
 650                       uint64_t timeout)
 651 {
 652         assert(fence);
 653         return TRUE;
 654 }
 655
 656 static const void *
 657 panfrost_screen_get_compiler_options(struct pipe_screen *pscreen,
 658                                      enum pipe_shader_ir ir,
 659                                      enum pipe_shader_type shader)
 660 {
 661         return NULL;
 662 }
 663
 664 struct pipe_screen *
 665 panfrost_create_screen(int fd, struct renderonly *ro, bool is_drm)
 666 {
 667         struct panfrost_screen *screen = CALLOC_STRUCT(panfrost_screen);
 668
 669         if (!screen)
 670                 return NULL;
 671
 672         if (ro) {
 673                 screen->ro = renderonly_dup(ro);
 674                 if (!screen->ro) {
 675                         fprintf(stderr, "Failed to dup renderonly object\n");
 676                         free(screen);
 677                         return NULL;
 678                 }
 679         }
 680
 681         screen->base.destroy = panfrost_destroy_screen;
 682
 683         screen->base.get_name = panfrost_get_name;
 684         screen->base.get_vendor = panfrost_get_vendor;
 685         screen->base.get_device_vendor = panfrost_get_device_vendor;
 686         screen->base.get_param = panfrost_get_param;
 687         screen->base.get_shader_param = panfrost_get_shader_param;
 688         screen->base.get_paramf = panfrost_get_paramf;
 689         screen->base.get_timestamp = panfrost_get_timestamp;
 690         screen->base.is_format_supported = panfrost_is_format_supported;
 691         //screen->base.context_create = panfrost_create_context;
 692         screen->base.flush_frontbuffer = panfrost_flush_frontbuffer;
 693         screen->base.get_compiler_options = panfrost_screen_get_compiler_options;
 694         screen->base.fence_reference = panfrost_fence_reference;
 695         screen->base.fence_finish = panfrost_fence_finish;
 696
 697         screen->last_fragment_id = -1;
 698         screen->last_fragment_flushed = true;
 699
 700         fprintf(stderr, "stub: Upstream panfrost (use downstream fork)\n");
 701         return NULL;
 702 }