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_MAX_RENDER_TARGETS:
  47       return 1;
  48
  49    case PIPE_CAP_OCCLUSION_QUERY:
  50    case PIPE_CAP_QUERY_TIME_ELAPSED:
  51    case PIPE_CAP_TEXTURE_SWIZZLE:
  52       return 0;
  53
  54    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  55    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  56    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  57       unreachable("driver must implement these.");
  58
  59    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  60    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  61    case PIPE_CAP_SM3:
  62    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
  63    case PIPE_CAP_PRIMITIVE_RESTART:
  64    case PIPE_CAP_INDEP_BLEND_ENABLE:
  65    case PIPE_CAP_INDEP_BLEND_FUNC:
  66    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: /* Enables GL_EXT_texture_array */
  67    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  68    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  69    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  70    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  71    case PIPE_CAP_DEPTH_CLIP_DISABLE:
  72    case PIPE_CAP_SHADER_STENCIL_EXPORT:
  73    case PIPE_CAP_TGSI_INSTANCEID:
  74    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
  75    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
  76    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
  77    case PIPE_CAP_SEAMLESS_CUBE_MAP:
  78    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
  79       return 0;
  80
  81    case PIPE_CAP_MIN_TEXEL_OFFSET:
  82       /* GL 3.x minimum value. */
  83       return -8;
  84    case PIPE_CAP_MAX_TEXEL_OFFSET:
  85       return 7;
  86
  87    case PIPE_CAP_CONDITIONAL_RENDER:
  88    case PIPE_CAP_TEXTURE_BARRIER:
  89       return 0;
  90
  91    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
  92       /* GL_EXT_transform_feedback minimum value. */
  93       return 4;
  94    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
  95       return 64;
  96
  97    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
  98    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
  99    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 100    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 101       return 0;
 102
 103    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 104    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 105       /* Minimum GLSL level implemented by gallium drivers. */
 106       return 120;
 107
 108    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 109    case PIPE_CAP_USER_VERTEX_BUFFERS:
 110    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 111    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 112    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 113    case PIPE_CAP_COMPUTE:
 114       return 0;
 115
 116    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 117       /* GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT default value. */
 118       return 1;
 119
 120    case PIPE_CAP_START_INSTANCE:
 121    case PIPE_CAP_QUERY_TIMESTAMP:
 122    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 123       return 0;
 124
 125    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 126       /* GL_ARB_map_buffer_alignment minimum value. All drivers expose the
 127        * extension.
 128        */
 129       return 64;
 130
 131    case PIPE_CAP_CUBE_MAP_ARRAY:
 132    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 133       return 0;
 134
 135    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 136       /* GL_EXT_texture_buffer minimum value. */
 137       return 256;
 138
 139    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 140    case PIPE_CAP_TGSI_TEXCOORD:
 141       return 0;
 142
 143    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 144       return 1;
 145
 146    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 147    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 148       return 0;
 149
 150    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 151       /* GL_EXT_texture_buffer minimum value. */
 152       return 65536;
 153
 154    case PIPE_CAP_MAX_VIEWPORTS:
 155       return 1;
 156
 157    case PIPE_CAP_ENDIANNESS:
 158       return PIPE_ENDIAN_LITTLE;
 159
 160    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 161    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 162    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 163    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 164    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS: /* Enables ARB_texture_gather */
 165    case PIPE_CAP_TEXTURE_GATHER_SM5:
 166    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 167    case PIPE_CAP_FAKE_SW_MSAA:
 168    case PIPE_CAP_TEXTURE_QUERY_LOD:
 169       return 0;
 170
 171    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 172       return -8;
 173    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 174       return 7;
 175
 176    case PIPE_CAP_SAMPLE_SHADING:
 177    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 178    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 179    case PIPE_CAP_MAX_VERTEX_STREAMS:
 180    case PIPE_CAP_DRAW_INDIRECT:
 181    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 182       return 0;
 183
 184    case PIPE_CAP_VENDOR_ID:
 185    case PIPE_CAP_DEVICE_ID:
 186       return 0xffffffff;
 187
 188    case PIPE_CAP_ACCELERATED:
 189    case PIPE_CAP_VIDEO_MEMORY:
 190    case PIPE_CAP_UMA:
 191       unreachable("driver must implement these.");
 192
 193    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 194       return 0;
 195
 196    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 197       /* GL minimum value */
 198       return 2048;
 199
 200    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 201    case PIPE_CAP_CLIP_HALFZ:
 202    case PIPE_CAP_VERTEXID_NOBASE:
 203    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 204    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 205    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 206    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 207    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 208    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 209    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 210    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 211    case PIPE_CAP_TGSI_TXQS:
 212    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 213    case PIPE_CAP_SHAREABLE_SHADERS:
 214    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 215    case PIPE_CAP_CLEAR_TEXTURE:
 216    case PIPE_CAP_DRAW_PARAMETERS:
 217    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 218    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 219    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 220    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 221    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 222       return 0;
 223
 224    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 225       /* Enables GL_ARB_shader_storage_buffer_object */
 226       return 0;
 227
 228    case PIPE_CAP_INVALIDATE_BUFFER:
 229    case PIPE_CAP_GENERATE_MIPMAP:
 230    case PIPE_CAP_STRING_MARKER:
 231    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 232    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 233    case PIPE_CAP_QUERY_MEMORY_INFO: /* Enables GL_ATI_meminfo */
 234       return 0;
 235
 236    case PIPE_CAP_PCI_GROUP:
 237    case PIPE_CAP_PCI_BUS:
 238    case PIPE_CAP_PCI_DEVICE:
 239    case PIPE_CAP_PCI_FUNCTION:
 240       unreachable("driver must implement these.");
 241
 242    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 243    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 244    case PIPE_CAP_CULL_DISTANCE:
 245    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 246    case PIPE_CAP_TGSI_VOTE:
 247    case PIPE_CAP_MAX_WINDOW_RECTANGLES: /* Enables EXT_window_rectangles */
 248    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 249    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 250    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 251    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 252    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 253    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 254    case PIPE_CAP_NATIVE_FENCE_FD:
 255       return 0;
 256
 257    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 258       return 1;
 259
 260    case PIPE_CAP_TGSI_FS_FBFETCH:
 261    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 262    case PIPE_CAP_DOUBLES:
 263    case PIPE_CAP_INT64:
 264    case PIPE_CAP_INT64_DIVMOD:
 265    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 266    case PIPE_CAP_TGSI_CLOCK:
 267    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 268    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 269    case PIPE_CAP_TGSI_BALLOT:
 270    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 271    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 272       return 0;
 273
 274    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 275       /* Drivers generally support this, and it reduces GL overhead just to
 276        * throw an error when buffers are mapped.
 277        */
 278       return 1;
 279
 280    case PIPE_CAP_POST_DEPTH_COVERAGE:
 281    case PIPE_CAP_BINDLESS_TEXTURE:
 282    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 283    case PIPE_CAP_QUERY_SO_OVERFLOW:
 284    case PIPE_CAP_MEMOBJ:
 285    case PIPE_CAP_LOAD_CONSTBUF:
 286    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 287    case PIPE_CAP_TILE_RASTER_ORDER:
 288       return 0;
 289
 290    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 291       /* nonzero overrides defaults */
 292       return 0;
 293
 294    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 295    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 296    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 297    case PIPE_CAP_FENCE_SIGNAL:
 298    case PIPE_CAP_CONSTBUF0_FLAGS:
 299    case PIPE_CAP_PACKED_UNIFORMS:
 300    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 301    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 302    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 303    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 304    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 305    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 306    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 307       return 0;
 308
 309    case PIPE_CAP_MAX_GS_INVOCATIONS:
 310       return 32;
 311
 312    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 313       return 1 << 27;
 314
 315    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
 316       return 0;
 317
 318    default:
 319       unreachable("bad PIPE_CAP_*");
 320    }
 321 }