src/gallium/auxiliary/util/u_screen.c

   1 /*
   2  * Copyright © 2018 Broadcom
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "pipe/p_screen.h"
  25 #include "util/u_screen.h"
  26
  27 /**
  28  * Helper to use from a pipe_screen->get_param() implementation to return
  29  * default values for unsupported PIPE_CAPs.
  30  *
  31  * Call this function from your pipe_screen->get_param() implementation's
  32  * default case, so that implementors of new pipe caps don't need to
  33  */
  34 int
  35 u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
  36                                  enum pipe_cap param)
  37 {
  38    /* Let's keep these sorted by position in p_defines.h. */
  39    switch (param) {
  40    case PIPE_CAP_NPOT_TEXTURES:
  41    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  42    case PIPE_CAP_ANISOTROPIC_FILTER:
  43    case PIPE_CAP_POINT_SPRITE:
  44       return 0;
  45
  46    case PIPE_CAP_GRAPHICS:
  47    case PIPE_CAP_MAX_RENDER_TARGETS:
  48       return 1;
  49
  50    case PIPE_CAP_OCCLUSION_QUERY:
  51    case PIPE_CAP_QUERY_TIME_ELAPSED:
  52    case PIPE_CAP_TEXTURE_SWIZZLE:
  53       return 0;
  54
  55    case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
  56    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  57    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  58       unreachable("driver must implement these.");
  59
  60    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  61    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  62    case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
  63    case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
  64    case PIPE_CAP_VERTEX_SHADER_SATURATE:
  65    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
  66    case PIPE_CAP_PRIMITIVE_RESTART:
  67    case PIPE_CAP_INDEP_BLEND_ENABLE:
  68    case PIPE_CAP_INDEP_BLEND_FUNC:
  69    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: /* Enables GL_EXT_texture_array */
  70    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  71    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  72    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  73    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  74    case PIPE_CAP_DEPTH_CLIP_DISABLE:
  75    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
  76    case PIPE_CAP_SHADER_STENCIL_EXPORT:
  77    case PIPE_CAP_TGSI_INSTANCEID:
  78    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
  79    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
  80    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
  81    case PIPE_CAP_SEAMLESS_CUBE_MAP:
  82    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
  83    case PIPE_CAP_RGB_OVERRIDE_DST_ALPHA_BLEND:
  84       return 0;
  85
  86    case PIPE_CAP_MIN_TEXEL_OFFSET:
  87       /* GL 3.x minimum value. */
  88       return -8;
  89    case PIPE_CAP_MAX_TEXEL_OFFSET:
  90       return 7;
  91
  92    case PIPE_CAP_CONDITIONAL_RENDER:
  93    case PIPE_CAP_TEXTURE_BARRIER:
  94       return 0;
  95
  96    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
  97       /* GL_EXT_transform_feedback minimum value. */
  98       return 4;
  99    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 100       return 64;
 101
 102    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 103    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 104    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 105    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 106       return 0;
 107
 108    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 109    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 110       /* Minimum GLSL level implemented by gallium drivers. */
 111       return 120;
 112
 113    case PIPE_CAP_ESSL_FEATURE_LEVEL:
 114       /* Tell gallium frontend to fallback to PIPE_CAP_GLSL_FEATURE_LEVEL */
 115       return 0;
 116
 117    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 118    case PIPE_CAP_USER_VERTEX_BUFFERS:
 119    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 120    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 121    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 122    case PIPE_CAP_COMPUTE:
 123       return 0;
 124
 125    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 126       /* GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT default value. */
 127       return 1;
 128
 129    case PIPE_CAP_START_INSTANCE:
 130    case PIPE_CAP_QUERY_TIMESTAMP:
 131    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 132       return 0;
 133
 134    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 135       /* GL_ARB_map_buffer_alignment minimum value. All drivers expose the
 136        * extension.
 137        */
 138       return 64;
 139
 140    case PIPE_CAP_CUBE_MAP_ARRAY:
 141    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 142       return 0;
 143
 144    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 145       /* GL_EXT_texture_buffer minimum value. */
 146       return 256;
 147
 148    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 149    case PIPE_CAP_TGSI_TEXCOORD:
 150       return 0;
 151
 152    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 153       return 1;
 154
 155    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 156    case PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE:
 157    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 158       return 0;
 159
 160    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 161       /* GL_EXT_texture_buffer minimum value. */
 162       return 65536;
 163
 164    case PIPE_CAP_MAX_VIEWPORTS:
 165       return 1;
 166
 167    case PIPE_CAP_ENDIANNESS:
 168       return PIPE_ENDIAN_LITTLE;
 169
 170    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 171    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 172    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 173    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 174    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS: /* Enables ARB_texture_gather */
 175    case PIPE_CAP_TEXTURE_GATHER_SM5:
 176    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 177    case PIPE_CAP_FAKE_SW_MSAA:
 178    case PIPE_CAP_TEXTURE_QUERY_LOD:
 179       return 0;
 180
 181    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 182       return -8;
 183    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 184       return 7;
 185
 186    case PIPE_CAP_SAMPLE_SHADING:
 187    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 188    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 189    case PIPE_CAP_MAX_VERTEX_STREAMS:
 190    case PIPE_CAP_DRAW_INDIRECT:
 191    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 192       return 0;
 193
 194    case PIPE_CAP_VENDOR_ID:
 195    case PIPE_CAP_DEVICE_ID:
 196       return 0xffffffff;
 197
 198    case PIPE_CAP_ACCELERATED:
 199    case PIPE_CAP_VIDEO_MEMORY:
 200    case PIPE_CAP_UMA:
 201       unreachable("driver must implement these.");
 202
 203    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 204       return 0;
 205
 206    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 207       /* GL minimum value */
 208       return 2048;
 209
 210    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 211    case PIPE_CAP_CLIP_HALFZ:
 212    case PIPE_CAP_VERTEXID_NOBASE:
 213    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 214    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 215    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 216    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 217    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 218    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 219    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 220    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 221    case PIPE_CAP_TGSI_TXQS:
 222    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 223    case PIPE_CAP_SHAREABLE_SHADERS:
 224    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 225    case PIPE_CAP_CLEAR_TEXTURE:
 226    case PIPE_CAP_CLEAR_SCISSORED:
 227    case PIPE_CAP_DRAW_PARAMETERS:
 228    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 229    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 230    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 231    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 232    case PIPE_CAP_TGSI_FS_POINT_IS_SYSVAL:
 233    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 234       return 0;
 235
 236    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 237       /* Enables GL_ARB_shader_storage_buffer_object */
 238       return 0;
 239
 240    case PIPE_CAP_INVALIDATE_BUFFER:
 241    case PIPE_CAP_GENERATE_MIPMAP:
 242    case PIPE_CAP_STRING_MARKER:
 243    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 244    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 245    case PIPE_CAP_QUERY_MEMORY_INFO: /* Enables GL_ATI_meminfo */
 246       return 0;
 247
 248    case PIPE_CAP_PCI_GROUP:
 249    case PIPE_CAP_PCI_BUS:
 250    case PIPE_CAP_PCI_DEVICE:
 251    case PIPE_CAP_PCI_FUNCTION:
 252       unreachable("driver must implement these.");
 253
 254    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 255    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 256    case PIPE_CAP_CULL_DISTANCE:
 257    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 258    case PIPE_CAP_TGSI_VOTE:
 259    case PIPE_CAP_MAX_WINDOW_RECTANGLES: /* Enables EXT_window_rectangles */
 260    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 261    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 262    case PIPE_CAP_VIEWPORT_SWIZZLE:
 263    case PIPE_CAP_VIEWPORT_MASK:
 264    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 265    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 266    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 267    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 268    case PIPE_CAP_NATIVE_FENCE_FD:
 269       return 0;
 270
 271    case PIPE_CAP_RASTERIZER_SUBPIXEL_BITS:
 272       return 4; /* GLES 2.0 minimum value */
 273
 274    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 275       return 1;
 276
 277    case PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS:
 278       return 0;
 279
 280    case PIPE_CAP_FBFETCH:
 281    case PIPE_CAP_FBFETCH_COHERENT:
 282    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 283    case PIPE_CAP_DOUBLES:
 284    case PIPE_CAP_INT64:
 285    case PIPE_CAP_INT64_DIVMOD:
 286    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 287    case PIPE_CAP_TGSI_CLOCK:
 288    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 289    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 290    case PIPE_CAP_TGSI_BALLOT:
 291    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 292    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 293    case PIPE_CAP_TGSI_DIV:
 294       return 0;
 295
 296    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 297       /* Drivers generally support this, and it reduces GL overhead just to
 298        * throw an error when buffers are mapped.
 299        */
 300       return 1;
 301
 302    case PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF:
 303       /* Don't unset this unless your driver can do better */
 304       return 1;
 305
 306    case PIPE_CAP_POST_DEPTH_COVERAGE:
 307    case PIPE_CAP_BINDLESS_TEXTURE:
 308    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 309    case PIPE_CAP_NIR_COMPACT_ARRAYS:
 310    case PIPE_CAP_QUERY_SO_OVERFLOW:
 311    case PIPE_CAP_MEMOBJ:
 312    case PIPE_CAP_LOAD_CONSTBUF:
 313    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 314    case PIPE_CAP_TILE_RASTER_ORDER:
 315       return 0;
 316
 317    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 318       /* nonzero overrides defaults */
 319       return 0;
 320
 321    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 322    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 323    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 324    case PIPE_CAP_FENCE_SIGNAL:
 325    case PIPE_CAP_CONSTBUF0_FLAGS:
 326    case PIPE_CAP_PACKED_UNIFORMS:
 327    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 328    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 329    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 330    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 331    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 332    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 333    case PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE:
 334    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 335    case PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS:
 336    case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
 337    case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
 338    case PIPE_CAP_TGSI_ATOMFADD:
 339    case PIPE_CAP_TGSI_SKIP_SHRINK_IO_ARRAYS:
 340    case PIPE_CAP_IMAGE_LOAD_FORMATTED:
 341    case PIPE_CAP_PREFER_COMPUTE_FOR_MULTIMEDIA:
 342    case PIPE_CAP_FRAGMENT_SHADER_INTERLOCK:
 343    case PIPE_CAP_CS_DERIVED_SYSTEM_VALUES_SUPPORTED:
 344    case PIPE_CAP_ATOMIC_FLOAT_MINMAX:
 345    case PIPE_CAP_SHADER_SAMPLES_IDENTICAL:
 346    case PIPE_CAP_TGSI_ATOMINC_WRAP:
 347    case PIPE_CAP_TGSI_TG4_COMPONENT_IN_SWIZZLE:
 348    case PIPE_CAP_GLSL_ZERO_INIT:
 349       return 0;
 350
 351    case PIPE_CAP_MAX_GS_INVOCATIONS:
 352       return 32;
 353
 354    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 355       return 1 << 27;
 356
 357    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
 358    case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
 359       return 0;
 360
 361    case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
 362       return 2047;
 363
 364    case PIPE_CAP_SURFACE_SAMPLE_COUNT:
 365       return 0;
 366    case PIPE_CAP_DEST_SURFACE_SRGB_CONTROL:
 367       return 1;
 368
 369    case PIPE_CAP_MAX_VARYINGS:
 370       return 8;
 371
 372    case PIPE_CAP_COMPUTE_GRID_INFO_LAST_BLOCK:
 373       return 0;
 374
 375    case PIPE_CAP_COMPUTE_SHADER_DERIVATIVES:
 376       return 0;
 377
 378    case PIPE_CAP_THROTTLE:
 379       return 1;
 380
 381    case PIPE_CAP_TEXTURE_SHADOW_LOD:
 382       return 0;
 383
 384    case PIPE_CAP_GL_SPIRV:
 385    case PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS:
 386       return 0;
 387
 388    case PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION:
 389       return 0;
 390
 391    case PIPE_CAP_DMABUF:
 392 #if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD)
 393       return 1;
 394 #else
 395       return 0;
 396 #endif
 397
 398    case PIPE_CAP_TEXTURE_SHADOW_MAP: /* Enables ARB_shadow */
 399       return 1;
 400
 401    case PIPE_CAP_FLATSHADE:
 402    case PIPE_CAP_ALPHA_TEST:
 403    case PIPE_CAP_POINT_SIZE_FIXED:
 404    case PIPE_CAP_TWO_SIDED_COLOR:
 405    case PIPE_CAP_CLIP_PLANES:
 406       return 1;
 407
 408    case PIPE_CAP_MAX_VERTEX_BUFFERS:
 409       return 16;
 410
 411    case PIPE_CAP_OPENCL_INTEGER_FUNCTIONS:
 412    case PIPE_CAP_INTEGER_MULTIPLY_32X16:
 413    case PIPE_CAP_DRAW_INFO_START_WITH_USER_INDICES:
 414       return 0;
 415    case PIPE_CAP_NIR_IMAGES_AS_DEREF:
 416       return 1;
 417
 418    case PIPE_CAP_FRONTEND_NOOP:
 419       /* Enables INTEL_blackhole_render */
 420       return 0;
 421
 422    case PIPE_CAP_PACKED_STREAM_OUTPUT:
 423       return 1;
 424
 425    case PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED:
 426    case PIPE_CAP_PSIZ_CLAMPED:
 427    case PIPE_CAP_MAP_UNSYNCHRONIZED_THREAD_SAFE:
 428       return 0;
 429
 430    case PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE:
 431       return 512 * 1024;
 432
 433    case PIPE_CAP_SYSTEM_SVM:
 434    case PIPE_CAP_ALPHA_TO_COVERAGE_DITHER_CONTROL:
 435       return 0;
 436
 437    default:
 438       unreachable("bad PIPE_CAP_*");
 439    }
 440 }