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 <sys/stat.h>
25
26 #include "pipe/p_screen.h"
27 #include "util/u_screen.h"
28 #include "util/u_debug.h"
29 #include "util/os_file.h"
30 #include "util/os_time.h"
31 #include "util/simple_mtx.h"
32 #include "util/u_hash_table.h"
33 #include "util/u_pointer.h"
34 #include "util/macros.h"
35
36 #ifdef HAVE_LIBDRM
37 #include <xf86drm.h>
38 #endif
39
40 /**
41 * Helper to use from a pipe_screen->get_param() implementation to return
42 * default values for unsupported PIPE_CAPs.
43 *
44 * Call this function from your pipe_screen->get_param() implementation's
45 * default case, so that implementors of new pipe caps don't need to
46 */
47 int
u_pipe_screen_get_param_defaults(struct pipe_screen * pscreen,enum pipe_cap param)48 u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
49 enum pipe_cap param)
50 {
51 UNUSED uint64_t cap;
52 UNUSED int fd;
53
54 assert(param < PIPE_CAP_LAST);
55
56 /* Let's keep these sorted by position in p_defines.h. */
57 switch (param) {
58 case PIPE_CAP_NPOT_TEXTURES:
59 case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
60 case PIPE_CAP_ANISOTROPIC_FILTER:
61 return 0;
62
63 case PIPE_CAP_GRAPHICS:
64 case PIPE_CAP_GL_CLAMP:
65 case PIPE_CAP_MAX_RENDER_TARGETS:
66 case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
67 case PIPE_CAP_DITHERING:
68 return 1;
69
70 case PIPE_CAP_OCCLUSION_QUERY:
71 case PIPE_CAP_QUERY_TIME_ELAPSED:
72 case PIPE_CAP_TEXTURE_SWIZZLE:
73 return 0;
74
75 case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
76 case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
77 unreachable("driver must implement these.");
78
79 case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
80 case PIPE_CAP_BLEND_EQUATION_SEPARATE:
81 case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
82 case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
83 case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
84 case PIPE_CAP_PRIMITIVE_RESTART:
85 case PIPE_CAP_PRIMITIVE_RESTART_FIXED_INDEX:
86 case PIPE_CAP_INDEP_BLEND_ENABLE:
87 case PIPE_CAP_INDEP_BLEND_FUNC:
88 case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
89 case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: /* Enables GL_EXT_texture_array */
90 case PIPE_CAP_FS_COORD_ORIGIN_UPPER_LEFT:
91 case PIPE_CAP_FS_COORD_ORIGIN_LOWER_LEFT:
92 case PIPE_CAP_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
93 case PIPE_CAP_FS_COORD_PIXEL_CENTER_INTEGER:
94 case PIPE_CAP_DEPTH_CLIP_DISABLE:
95 case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
96 case PIPE_CAP_DEPTH_CLAMP_ENABLE:
97 case PIPE_CAP_SHADER_STENCIL_EXPORT:
98 case PIPE_CAP_VS_INSTANCEID:
99 case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
100 case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
101 case PIPE_CAP_SEAMLESS_CUBE_MAP:
102 case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
103 case PIPE_CAP_MULTIVIEW:
104 return 0;
105
106 case PIPE_CAP_SUPPORTED_PRIM_MODES_WITH_RESTART:
107 case PIPE_CAP_SUPPORTED_PRIM_MODES:
108 return BITFIELD_MASK(MESA_PRIM_COUNT);
109
110 case PIPE_CAP_MIN_TEXEL_OFFSET:
111 /* GL 3.x minimum value. */
112 return -8;
113 case PIPE_CAP_MAX_TEXEL_OFFSET:
114 return 7;
115
116 case PIPE_CAP_CONDITIONAL_RENDER:
117 case PIPE_CAP_TEXTURE_BARRIER:
118 return 0;
119
120 case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
121 /* GL_EXT_transform_feedback minimum value. */
122 return 4;
123 case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
124 return 64;
125
126 case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
127 case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
128 case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
129 case PIPE_CAP_VERTEX_COLOR_CLAMPED:
130 return 0;
131
132 case PIPE_CAP_GLSL_FEATURE_LEVEL:
133 case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
134 /* Minimum GLSL level implemented by gallium drivers. */
135 return 120;
136
137 case PIPE_CAP_ESSL_FEATURE_LEVEL:
138 /* Tell gallium frontend to fallback to PIPE_CAP_GLSL_FEATURE_LEVEL */
139 return 0;
140
141 case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
142 case PIPE_CAP_USER_VERTEX_BUFFERS:
143 case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
144 case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
145 case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
146 case PIPE_CAP_VERTEX_ATTRIB_ELEMENT_ALIGNED_ONLY:
147 case PIPE_CAP_COMPUTE:
148 return 0;
149
150 case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
151 /* GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT default value. */
152 return 1;
153
154 case PIPE_CAP_START_INSTANCE:
155 case PIPE_CAP_QUERY_TIMESTAMP:
156 case PIPE_CAP_TIMER_RESOLUTION:
157 case PIPE_CAP_TEXTURE_MULTISAMPLE:
158 return 0;
159
160 case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
161 /* GL_ARB_map_buffer_alignment minimum value. All drivers expose the
162 * extension.
163 */
164 return 64;
165
166 case PIPE_CAP_CUBE_MAP_ARRAY:
167 case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
168 return 0;
169
170 case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
171 /* GL_EXT_texture_buffer minimum value. */
172 return 256;
173
174 case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
175 case PIPE_CAP_TGSI_TEXCOORD:
176 return 0;
177
178 case PIPE_CAP_TEXTURE_TRANSFER_MODES:
179 return PIPE_TEXTURE_TRANSFER_BLIT;
180
181 case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
182 case PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE:
183 case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
184 return 0;
185
186 case PIPE_CAP_MAX_TEXEL_BUFFER_ELEMENTS_UINT:
187 /* GL_EXT_texture_buffer minimum value. */
188 return 65536;
189
190 case PIPE_CAP_LINEAR_IMAGE_PITCH_ALIGNMENT:
191 return 0;
192
193 case PIPE_CAP_LINEAR_IMAGE_BASE_ADDRESS_ALIGNMENT:
194 return 0;
195
196 case PIPE_CAP_MAX_VIEWPORTS:
197 return 1;
198
199 case PIPE_CAP_ENDIANNESS:
200 return PIPE_ENDIAN_LITTLE;
201
202 case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
203 case PIPE_CAP_VS_LAYER_VIEWPORT:
204 case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
205 case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
206 case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS: /* Enables ARB_texture_gather */
207 case PIPE_CAP_TEXTURE_GATHER_SM5:
208 return 0;
209
210 /* All new drivers should support persistent/coherent mappings. This CAP
211 * should only be unset by layered drivers whose host drivers cannot support
212 * coherent mappings.
213 */
214 case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
215 return 1;
216
217 case PIPE_CAP_FAKE_SW_MSAA:
218 case PIPE_CAP_TEXTURE_QUERY_LOD:
219 return 0;
220
221 case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
222 return -8;
223 case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
224 return 7;
225
226 case PIPE_CAP_SAMPLE_SHADING:
227 case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
228 case PIPE_CAP_VS_WINDOW_SPACE_POSITION:
229 case PIPE_CAP_MAX_VERTEX_STREAMS:
230 case PIPE_CAP_DRAW_INDIRECT:
231 case PIPE_CAP_FS_FINE_DERIVATIVE:
232 return 0;
233
234 case PIPE_CAP_VENDOR_ID:
235 case PIPE_CAP_DEVICE_ID:
236 return 0xffffffff;
237
238 case PIPE_CAP_ACCELERATED:
239 case PIPE_CAP_VIDEO_MEMORY:
240 case PIPE_CAP_UMA:
241 unreachable("driver must implement these.");
242
243 case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
244 return 0;
245
246 case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
247 /* GL minimum value */
248 return 2048;
249
250 case PIPE_CAP_SAMPLER_VIEW_TARGET:
251 case PIPE_CAP_CLIP_HALFZ:
252 case PIPE_CAP_POLYGON_OFFSET_CLAMP:
253 case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
254 case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
255 case PIPE_CAP_RESOURCE_FROM_USER_MEMORY_COMPUTE_ONLY:
256 case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
257 case PIPE_CAP_DEVICE_PROTECTED_SURFACE:
258 case PIPE_CAP_DEVICE_PROTECTED_CONTEXT:
259 case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
260 case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
261 case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
262 case PIPE_CAP_DEPTH_BOUNDS_TEST:
263 case PIPE_CAP_TEXTURE_QUERY_SAMPLES:
264 case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
265 return 0;
266
267 /* All drivers should expose this cap, as it is required for applications to
268 * be able to efficiently compile GL shaders from multiple threads during
269 * load.
270 */
271 case PIPE_CAP_SHAREABLE_SHADERS:
272 return 1;
273
274 case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
275 case PIPE_CAP_CLEAR_SCISSORED:
276 case PIPE_CAP_DRAW_PARAMETERS:
277 case PIPE_CAP_SHADER_PACK_HALF_FLOAT:
278 case PIPE_CAP_MULTI_DRAW_INDIRECT:
279 case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
280 case PIPE_CAP_FS_POSITION_IS_SYSVAL:
281 case PIPE_CAP_FS_POINT_IS_SYSVAL:
282 case PIPE_CAP_FS_FACE_IS_INTEGER_SYSVAL:
283 return 0;
284 case PIPE_CAP_MULTI_DRAW_INDIRECT_PARTIAL_STRIDE:
285 return 1;
286
287 case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
288 /* Enables GL_ARB_shader_storage_buffer_object */
289 return 0;
290
291 case PIPE_CAP_INVALIDATE_BUFFER:
292 case PIPE_CAP_GENERATE_MIPMAP:
293 case PIPE_CAP_STRING_MARKER:
294 case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
295 case PIPE_CAP_QUERY_BUFFER_OBJECT:
296 case PIPE_CAP_QUERY_MEMORY_INFO: /* Enables GL_ATI_meminfo */
297 return 0;
298
299 case PIPE_CAP_PCI_GROUP:
300 case PIPE_CAP_PCI_BUS:
301 case PIPE_CAP_PCI_DEVICE:
302 case PIPE_CAP_PCI_FUNCTION:
303 unreachable("driver must implement these.");
304
305 case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
306 case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
307 case PIPE_CAP_CULL_DISTANCE:
308 case PIPE_CAP_CULL_DISTANCE_NOCOMBINE:
309 case PIPE_CAP_SHADER_GROUP_VOTE:
310 case PIPE_CAP_MAX_WINDOW_RECTANGLES: /* Enables EXT_window_rectangles */
311 case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
312 case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
313 case PIPE_CAP_VIEWPORT_SWIZZLE:
314 case PIPE_CAP_VIEWPORT_MASK:
315 case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
316 case PIPE_CAP_SHADER_ARRAY_COMPONENTS:
317 case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
318 case PIPE_CAP_NATIVE_FENCE_FD:
319 return 0;
320
321 case PIPE_CAP_RASTERIZER_SUBPIXEL_BITS:
322 return 4; /* GLES 2.0 minimum value */
323
324 case PIPE_CAP_PREFER_BACK_BUFFER_REUSE:
325 return 1;
326
327 case PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS:
328 return 0;
329
330 case PIPE_CAP_FBFETCH:
331 case PIPE_CAP_FBFETCH_COHERENT:
332 case PIPE_CAP_FBFETCH_ZS:
333 case PIPE_CAP_BLEND_EQUATION_ADVANCED:
334 case PIPE_CAP_LEGACY_MATH_RULES:
335 case PIPE_CAP_FP16:
336 case PIPE_CAP_DOUBLES:
337 case PIPE_CAP_INT64:
338 case PIPE_CAP_TGSI_TEX_TXF_LZ:
339 case PIPE_CAP_SHADER_CLOCK:
340 case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
341 case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
342 case PIPE_CAP_SHADER_BALLOT:
343 case PIPE_CAP_TES_LAYER_VIEWPORT:
344 case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
345 case PIPE_CAP_TGSI_DIV:
346 case PIPE_CAP_NIR_ATOMICS_AS_DEREF:
347 return 0;
348
349 case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
350 /* Drivers generally support this, and it reduces GL overhead just to
351 * throw an error when buffers are mapped.
352 */
353 return 1;
354
355 case PIPE_CAP_PREFER_IMM_ARRAYS_AS_CONSTBUF:
356 /* Don't unset this unless your driver can do better, like using nir_opt_large_constants() */
357 return 1;
358
359 case PIPE_CAP_POST_DEPTH_COVERAGE:
360 case PIPE_CAP_BINDLESS_TEXTURE:
361 case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
362 case PIPE_CAP_QUERY_SO_OVERFLOW:
363 case PIPE_CAP_MEMOBJ:
364 case PIPE_CAP_LOAD_CONSTBUF:
365 case PIPE_CAP_TILE_RASTER_ORDER:
366 return 0;
367
368 case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
369 /* nonzero overrides defaults */
370 return 0;
371
372 case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
373 case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
374 case PIPE_CAP_CONTEXT_PRIORITY_MASK:
375 case PIPE_CAP_FENCE_SIGNAL:
376 case PIPE_CAP_CONSTBUF0_FLAGS:
377 case PIPE_CAP_PACKED_UNIFORMS:
378 case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
379 case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
380 case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
381 case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
382 case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
383 case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
384 case PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE:
385 case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
386 case PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS:
387 case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
388 case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
389 case PIPE_CAP_IMAGE_ATOMIC_FLOAT_ADD:
390 case PIPE_CAP_IMAGE_LOAD_FORMATTED:
391 case PIPE_CAP_IMAGE_STORE_FORMATTED:
392 case PIPE_CAP_PREFER_COMPUTE_FOR_MULTIMEDIA:
393 case PIPE_CAP_FRAGMENT_SHADER_INTERLOCK:
394 case PIPE_CAP_ATOMIC_FLOAT_MINMAX:
395 case PIPE_CAP_SHADER_SAMPLES_IDENTICAL:
396 case PIPE_CAP_IMAGE_ATOMIC_INC_WRAP:
397 case PIPE_CAP_TGSI_TG4_COMPONENT_IN_SWIZZLE:
398 case PIPE_CAP_GLSL_ZERO_INIT:
399 case PIPE_CAP_ALLOW_DRAW_OUT_OF_ORDER:
400 return 0;
401
402 case PIPE_CAP_MAX_GS_INVOCATIONS:
403 return 32;
404
405 case PIPE_CAP_MAX_SHADER_BUFFER_SIZE_UINT:
406 return 1 << 27;
407
408 case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
409 case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
410 return 0;
411
412 case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
413 return 2047;
414
415 case PIPE_CAP_SURFACE_SAMPLE_COUNT:
416 return 0;
417 case PIPE_CAP_DEST_SURFACE_SRGB_CONTROL:
418 return 1;
419
420 case PIPE_CAP_MAX_VARYINGS:
421 return 8;
422
423 case PIPE_CAP_COMPUTE_GRID_INFO_LAST_BLOCK:
424 return 0;
425
426 case PIPE_CAP_COMPUTE_SHADER_DERIVATIVES:
427 return 0;
428
429 case PIPE_CAP_THROTTLE:
430 return 1;
431
432 case PIPE_CAP_TEXTURE_SHADOW_LOD:
433 return 0;
434
435 case PIPE_CAP_GL_SPIRV:
436 case PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS:
437 return 0;
438
439 case PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION:
440 return 0;
441
442 case PIPE_CAP_DMABUF:
443 #if defined(HAVE_LIBDRM) && (DETECT_OS_LINUX || DETECT_OS_BSD || DETECT_OS_MANAGARM)
444 fd = pscreen->get_screen_fd(pscreen);
445 if (fd != -1 && (drmGetCap(fd, DRM_CAP_PRIME, &cap) == 0))
446 return cap;
447 else
448 return 0;
449 #else
450 return 0;
451 #endif
452
453 case PIPE_CAP_CL_GL_SHARING:
454 return 0;
455
456 case PIPE_CAP_TEXTURE_SHADOW_MAP: /* Enables ARB_shadow */
457 return 1;
458
459 case PIPE_CAP_FLATSHADE:
460 case PIPE_CAP_ALPHA_TEST:
461 case PIPE_CAP_POINT_SIZE_FIXED:
462 case PIPE_CAP_TWO_SIDED_COLOR:
463 case PIPE_CAP_CLIP_PLANES:
464 return 1;
465
466 case PIPE_CAP_MAX_VERTEX_BUFFERS:
467 return 16;
468
469 case PIPE_CAP_OPENCL_INTEGER_FUNCTIONS:
470 case PIPE_CAP_INTEGER_MULTIPLY_32X16:
471 return 0;
472 case PIPE_CAP_NIR_IMAGES_AS_DEREF:
473 return 1;
474
475 case PIPE_CAP_FRONTEND_NOOP:
476 /* Enables INTEL_blackhole_render */
477 return 0;
478
479 case PIPE_CAP_PACKED_STREAM_OUTPUT:
480 return 1;
481
482 case PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED:
483 case PIPE_CAP_PSIZ_CLAMPED:
484 case PIPE_CAP_MAP_UNSYNCHRONIZED_THREAD_SAFE:
485 return 0;
486
487 case PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE:
488 return 512 * 1024;
489
490 case PIPE_CAP_SYSTEM_SVM:
491 case PIPE_CAP_ALPHA_TO_COVERAGE_DITHER_CONTROL:
492 case PIPE_CAP_NO_CLIP_ON_COPY_TEX:
493 case PIPE_CAP_MAX_TEXTURE_MB:
494 case PIPE_CAP_PREFER_REAL_BUFFER_IN_CONSTBUF0:
495 return 0;
496
497 case PIPE_CAP_TEXRECT:
498 return 1;
499
500 case PIPE_CAP_SHADER_ATOMIC_INT64:
501 return 0;
502
503 case PIPE_CAP_SAMPLER_REDUCTION_MINMAX:
504 case PIPE_CAP_SAMPLER_REDUCTION_MINMAX_ARB:
505 return 0;
506
507 case PIPE_CAP_ALLOW_DYNAMIC_VAO_FASTPATH:
508 return 1;
509
510 case PIPE_CAP_EMULATE_NONFIXED_PRIMITIVE_RESTART:
511 case PIPE_CAP_DRAW_VERTEX_STATE:
512 return 0;
513
514 case PIPE_CAP_PREFER_POT_ALIGNED_VARYINGS:
515 return 0;
516
517 case PIPE_CAP_MAX_SPARSE_TEXTURE_SIZE:
518 case PIPE_CAP_MAX_SPARSE_3D_TEXTURE_SIZE:
519 case PIPE_CAP_MAX_SPARSE_ARRAY_TEXTURE_LAYERS:
520 case PIPE_CAP_SPARSE_TEXTURE_FULL_ARRAY_CUBE_MIPMAPS:
521 case PIPE_CAP_QUERY_SPARSE_TEXTURE_RESIDENCY:
522 case PIPE_CAP_CLAMP_SPARSE_TEXTURE_LOD:
523 case PIPE_CAP_TIMELINE_SEMAPHORE_IMPORT:
524 case PIPE_CAP_ALLOW_GLTHREAD_BUFFER_SUBDATA_OPT:
525 return 0;
526
527 case PIPE_CAP_MAX_CONSTANT_BUFFER_SIZE_UINT:
528 return pscreen->get_shader_param(pscreen, PIPE_SHADER_FRAGMENT,
529 PIPE_SHADER_CAP_MAX_CONST_BUFFER0_SIZE);
530
531 case PIPE_CAP_HARDWARE_GL_SELECT: {
532 /* =0: on CPU, always disabled
533 * >0: on GPU, enable by default, user can disable it manually
534 * <0: unknown, disable by default, user can enable it manually
535 */
536 int accel = pscreen->get_param(pscreen, PIPE_CAP_ACCELERATED);
537
538 return !!accel && debug_get_bool_option("MESA_HW_ACCEL_SELECT", accel > 0) &&
539 /* internal geometry shader need indirect array access */
540 pscreen->get_shader_param(pscreen, PIPE_SHADER_GEOMETRY,
541 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR) &&
542 /* internal geometry shader need SSBO support */
543 pscreen->get_shader_param(pscreen, PIPE_SHADER_GEOMETRY,
544 PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
545 }
546
547 case PIPE_CAP_QUERY_TIMESTAMP_BITS:
548 return 64;
549
550 case PIPE_CAP_VALIDATE_ALL_DIRTY_STATES:
551 case PIPE_CAP_NULL_TEXTURES:
552 case PIPE_CAP_ASTC_VOID_EXTENTS_NEED_DENORM_FLUSH:
553 case PIPE_CAP_ASTC_DECODE_MODE:
554 case PIPE_CAP_HAS_CONST_BW:
555 return 0;
556
557 case PIPE_CAP_TEXTURE_SAMPLER_INDEPENDENT:
558 /* this is expected of gallium drivers, but some just don't support it */
559 return 1;
560
561 case PIPE_CAP_PERFORMANCE_MONITOR:
562 return pscreen->get_driver_query_info && pscreen->get_driver_query_group_info &&
563 pscreen->get_driver_query_group_info(pscreen, 0, NULL) != 0;
564
565 case PIPE_CAP_SHADER_SUBGROUP_SIZE:
566 case PIPE_CAP_SHADER_SUBGROUP_SUPPORTED_STAGES:
567 case PIPE_CAP_SHADER_SUBGROUP_SUPPORTED_FEATURES:
568 case PIPE_CAP_SHADER_SUBGROUP_QUAD_ALL_STAGES:
569 return 0;
570
571 default:
572 unreachable("bad PIPE_CAP_*");
573 }
574 }
575
u_default_get_timestamp(UNUSED struct pipe_screen * screen)576 uint64_t u_default_get_timestamp(UNUSED struct pipe_screen *screen)
577 {
578 return os_time_get_nano();
579 }
580
581 static uint32_t
hash_file_description(const void * key)582 hash_file_description(const void *key)
583 {
584 int fd = pointer_to_intptr(key);
585 struct stat stat;
586
587 // File descriptions can't be hashed, but it should be safe to assume
588 // that the same file description will always refer to he same file
589 if (fstat(fd, &stat) == -1)
590 return ~0; // Make sure fstat failing won't result in a random hash
591
592 return stat.st_dev ^ stat.st_ino ^ stat.st_rdev;
593 }
594
595
596 static bool
equal_file_description(const void * key1,const void * key2)597 equal_file_description(const void *key1, const void *key2)
598 {
599 int ret;
600 int fd1 = pointer_to_intptr(key1);
601 int fd2 = pointer_to_intptr(key2);
602 struct stat stat1, stat2;
603
604 // If the file descriptors are the same, the file description will be too
605 // This will also catch sentinels, such as -1
606 if (fd1 == fd2)
607 return true;
608
609 ret = os_same_file_description(fd1, fd2);
610 if (ret >= 0)
611 return (ret == 0);
612
613 {
614 static bool has_warned;
615 if (!has_warned)
616 fprintf(stderr, "os_same_file_description couldn't determine if "
617 "two DRM fds reference the same file description. (%s)\n"
618 "Let's just assume that file descriptors for the same file probably"
619 "share the file description instead. This may cause problems when"
620 "that isn't the case.\n", strerror(errno));
621 has_warned = true;
622 }
623
624 // Let's at least check that it's the same file, different files can't
625 // have the same file descriptions
626 fstat(fd1, &stat1);
627 fstat(fd2, &stat2);
628
629 return stat1.st_dev == stat2.st_dev &&
630 stat1.st_ino == stat2.st_ino &&
631 stat1.st_rdev == stat2.st_rdev;
632 }
633
634
635 static struct hash_table *
hash_table_create_file_description_keys(void)636 hash_table_create_file_description_keys(void)
637 {
638 return _mesa_hash_table_create(NULL, hash_file_description, equal_file_description);
639 }
640
641 static struct hash_table *fd_tab = NULL;
642
643 static simple_mtx_t screen_mutex = SIMPLE_MTX_INITIALIZER;
644
645 static void
drm_screen_destroy(struct pipe_screen * pscreen)646 drm_screen_destroy(struct pipe_screen *pscreen)
647 {
648 bool destroy;
649
650 simple_mtx_lock(&screen_mutex);
651 destroy = --pscreen->refcnt == 0;
652 if (destroy) {
653 int fd = pscreen->get_screen_fd(pscreen);
654 _mesa_hash_table_remove_key(fd_tab, intptr_to_pointer(fd));
655
656 if (!fd_tab->entries) {
657 _mesa_hash_table_destroy(fd_tab, NULL);
658 fd_tab = NULL;
659 }
660 }
661 simple_mtx_unlock(&screen_mutex);
662
663 if (destroy) {
664 pscreen->destroy = pscreen->winsys_priv;
665 pscreen->destroy(pscreen);
666 }
667 }
668
669 struct pipe_screen *
u_pipe_screen_lookup_or_create(int gpu_fd,const struct pipe_screen_config * config,struct renderonly * ro,pipe_screen_create_function screen_create)670 u_pipe_screen_lookup_or_create(int gpu_fd,
671 const struct pipe_screen_config *config,
672 struct renderonly *ro,
673 pipe_screen_create_function screen_create)
674 {
675 struct pipe_screen *pscreen = NULL;
676
677 simple_mtx_lock(&screen_mutex);
678 if (!fd_tab) {
679 fd_tab = hash_table_create_file_description_keys();
680 if (!fd_tab)
681 goto unlock;
682 }
683
684 pscreen = util_hash_table_get(fd_tab, intptr_to_pointer(gpu_fd));
685 if (pscreen) {
686 pscreen->refcnt++;
687 } else {
688 pscreen = screen_create(gpu_fd, config, ro);
689 if (pscreen) {
690 pscreen->refcnt = 1;
691 _mesa_hash_table_insert(fd_tab, intptr_to_pointer(gpu_fd), pscreen);
692
693 /* Bit of a hack, to avoid circular linkage dependency,
694 * ie. pipe driver having to call in to winsys, we
695 * override the pipe drivers screen->destroy() */
696 pscreen->winsys_priv = pscreen->destroy;
697 pscreen->destroy = drm_screen_destroy;
698 }
699 }
700
701 unlock:
702 simple_mtx_unlock(&screen_mutex);
703 return pscreen;
704 }
705