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_3D_LEVELS:
77 case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
78 unreachable("driver must implement these.");
79
80 case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
81 case PIPE_CAP_BLEND_EQUATION_SEPARATE:
82 case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
83 case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
84 case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
85 case PIPE_CAP_PRIMITIVE_RESTART:
86 case PIPE_CAP_PRIMITIVE_RESTART_FIXED_INDEX:
87 case PIPE_CAP_INDEP_BLEND_ENABLE:
88 case PIPE_CAP_INDEP_BLEND_FUNC:
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 return 0;
104
105 case PIPE_CAP_SUPPORTED_PRIM_MODES_WITH_RESTART:
106 case PIPE_CAP_SUPPORTED_PRIM_MODES:
107 return BITFIELD_MASK(MESA_PRIM_COUNT);
108
109 case PIPE_CAP_MIN_TEXEL_OFFSET:
110 /* GL 3.x minimum value. */
111 return -8;
112 case PIPE_CAP_MAX_TEXEL_OFFSET:
113 return 7;
114
115 case PIPE_CAP_CONDITIONAL_RENDER:
116 case PIPE_CAP_TEXTURE_BARRIER:
117 return 0;
118
119 case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
120 /* GL_EXT_transform_feedback minimum value. */
121 return 4;
122 case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
123 return 64;
124
125 case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
126 case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
127 case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
128 case PIPE_CAP_VERTEX_COLOR_CLAMPED:
129 return 0;
130
131 case PIPE_CAP_GLSL_FEATURE_LEVEL:
132 case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
133 /* Minimum GLSL level implemented by gallium drivers. */
134 return 120;
135
136 case PIPE_CAP_ESSL_FEATURE_LEVEL:
137 /* Tell gallium frontend to fallback to PIPE_CAP_GLSL_FEATURE_LEVEL */
138 return 0;
139
140 case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
141 case PIPE_CAP_USER_VERTEX_BUFFERS:
142 case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
143 case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
144 case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
145 case PIPE_CAP_VERTEX_ATTRIB_ELEMENT_ALIGNED_ONLY:
146 case PIPE_CAP_COMPUTE:
147 return 0;
148
149 case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
150 /* GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT default value. */
151 return 1;
152
153 case PIPE_CAP_START_INSTANCE:
154 case PIPE_CAP_QUERY_TIMESTAMP:
155 case PIPE_CAP_TIMER_RESOLUTION:
156 case PIPE_CAP_TEXTURE_MULTISAMPLE:
157 return 0;
158
159 case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
160 /* GL_ARB_map_buffer_alignment minimum value. All drivers expose the
161 * extension.
162 */
163 return 64;
164
165 case PIPE_CAP_CUBE_MAP_ARRAY:
166 case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
167 return 0;
168
169 case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
170 /* GL_EXT_texture_buffer minimum value. */
171 return 256;
172
173 case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
174 case PIPE_CAP_TGSI_TEXCOORD:
175 return 0;
176
177 case PIPE_CAP_TEXTURE_TRANSFER_MODES:
178 return PIPE_TEXTURE_TRANSFER_BLIT;
179
180 case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
181 case PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE:
182 case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
183 return 0;
184
185 case PIPE_CAP_MAX_TEXEL_BUFFER_ELEMENTS_UINT:
186 /* GL_EXT_texture_buffer minimum value. */
187 return 65536;
188
189 case PIPE_CAP_LINEAR_IMAGE_PITCH_ALIGNMENT:
190 return 0;
191
192 case PIPE_CAP_LINEAR_IMAGE_BASE_ADDRESS_ALIGNMENT:
193 return 0;
194
195 case PIPE_CAP_MAX_VIEWPORTS:
196 return 1;
197
198 case PIPE_CAP_ENDIANNESS:
199 return PIPE_ENDIAN_LITTLE;
200
201 case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
202 case PIPE_CAP_VS_LAYER_VIEWPORT:
203 case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
204 case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
205 case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS: /* Enables ARB_texture_gather */
206 case PIPE_CAP_TEXTURE_GATHER_SM5:
207 return 0;
208
209 /* All new drivers should support persistent/coherent mappings. This CAP
210 * should only be unset by layered drivers whose host drivers cannot support
211 * coherent mappings.
212 */
213 case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
214 return 1;
215
216 case PIPE_CAP_FAKE_SW_MSAA:
217 case PIPE_CAP_TEXTURE_QUERY_LOD:
218 return 0;
219
220 case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
221 return -8;
222 case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
223 return 7;
224
225 case PIPE_CAP_SAMPLE_SHADING:
226 case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
227 case PIPE_CAP_VS_WINDOW_SPACE_POSITION:
228 case PIPE_CAP_MAX_VERTEX_STREAMS:
229 case PIPE_CAP_DRAW_INDIRECT:
230 case PIPE_CAP_FS_FINE_DERIVATIVE:
231 return 0;
232
233 case PIPE_CAP_VENDOR_ID:
234 case PIPE_CAP_DEVICE_ID:
235 return 0xffffffff;
236
237 case PIPE_CAP_ACCELERATED:
238 case PIPE_CAP_VIDEO_MEMORY:
239 case PIPE_CAP_UMA:
240 unreachable("driver must implement these.");
241
242 case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
243 return 0;
244
245 case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
246 /* GL minimum value */
247 return 2048;
248
249 case PIPE_CAP_SAMPLER_VIEW_TARGET:
250 case PIPE_CAP_CLIP_HALFZ:
251 case PIPE_CAP_POLYGON_OFFSET_CLAMP:
252 case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
253 case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
254 case PIPE_CAP_RESOURCE_FROM_USER_MEMORY_COMPUTE_ONLY:
255 case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
256 case PIPE_CAP_DEVICE_PROTECTED_SURFACE:
257 case PIPE_CAP_DEVICE_PROTECTED_CONTEXT:
258 case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
259 case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
260 case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
261 case PIPE_CAP_DEPTH_BOUNDS_TEST:
262 case PIPE_CAP_TEXTURE_QUERY_SAMPLES:
263 case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
264 return 0;
265
266 /* All drivers should expose this cap, as it is required for applications to
267 * be able to efficiently compile GL shaders from multiple threads during
268 * load.
269 */
270 case PIPE_CAP_SHAREABLE_SHADERS:
271 return 1;
272
273 case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
274 case PIPE_CAP_CLEAR_SCISSORED:
275 case PIPE_CAP_DRAW_PARAMETERS:
276 case PIPE_CAP_SHADER_PACK_HALF_FLOAT:
277 case PIPE_CAP_MULTI_DRAW_INDIRECT:
278 case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
279 case PIPE_CAP_FS_POSITION_IS_SYSVAL:
280 case PIPE_CAP_FS_POINT_IS_SYSVAL:
281 case PIPE_CAP_FS_FACE_IS_INTEGER_SYSVAL:
282 return 0;
283 case PIPE_CAP_MULTI_DRAW_INDIRECT_PARTIAL_STRIDE:
284 return 1;
285
286 case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
287 /* Enables GL_ARB_shader_storage_buffer_object */
288 return 0;
289
290 case PIPE_CAP_INVALIDATE_BUFFER:
291 case PIPE_CAP_GENERATE_MIPMAP:
292 case PIPE_CAP_STRING_MARKER:
293 case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
294 case PIPE_CAP_QUERY_BUFFER_OBJECT:
295 case PIPE_CAP_QUERY_MEMORY_INFO: /* Enables GL_ATI_meminfo */
296 return 0;
297
298 case PIPE_CAP_PCI_GROUP:
299 case PIPE_CAP_PCI_BUS:
300 case PIPE_CAP_PCI_DEVICE:
301 case PIPE_CAP_PCI_FUNCTION:
302 unreachable("driver must implement these.");
303
304 case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
305 case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
306 case PIPE_CAP_CULL_DISTANCE:
307 case PIPE_CAP_CULL_DISTANCE_NOCOMBINE:
308 case PIPE_CAP_SHADER_GROUP_VOTE:
309 case PIPE_CAP_MAX_WINDOW_RECTANGLES: /* Enables EXT_window_rectangles */
310 case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
311 case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
312 case PIPE_CAP_VIEWPORT_SWIZZLE:
313 case PIPE_CAP_VIEWPORT_MASK:
314 case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
315 case PIPE_CAP_SHADER_ARRAY_COMPONENTS:
316 case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
317 case PIPE_CAP_SHADER_CAN_READ_OUTPUTS:
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_NIR_COMPACT_ARRAYS:
363 case PIPE_CAP_QUERY_SO_OVERFLOW:
364 case PIPE_CAP_MEMOBJ:
365 case PIPE_CAP_LOAD_CONSTBUF:
366 case PIPE_CAP_TILE_RASTER_ORDER:
367 return 0;
368
369 case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
370 /* nonzero overrides defaults */
371 return 0;
372
373 case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
374 case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
375 case PIPE_CAP_CONTEXT_PRIORITY_MASK:
376 case PIPE_CAP_FENCE_SIGNAL:
377 case PIPE_CAP_CONSTBUF0_FLAGS:
378 case PIPE_CAP_PACKED_UNIFORMS:
379 case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
380 case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
381 case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
382 case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
383 case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
384 case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
385 case PIPE_CAP_CONSERVATIVE_RASTER_INNER_COVERAGE:
386 case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
387 case PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS:
388 case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
389 case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
390 case PIPE_CAP_IMAGE_ATOMIC_FLOAT_ADD:
391 case PIPE_CAP_IMAGE_LOAD_FORMATTED:
392 case PIPE_CAP_IMAGE_STORE_FORMATTED:
393 case PIPE_CAP_PREFER_COMPUTE_FOR_MULTIMEDIA:
394 case PIPE_CAP_FRAGMENT_SHADER_INTERLOCK:
395 case PIPE_CAP_ATOMIC_FLOAT_MINMAX:
396 case PIPE_CAP_SHADER_SAMPLES_IDENTICAL:
397 case PIPE_CAP_IMAGE_ATOMIC_INC_WRAP:
398 case PIPE_CAP_TGSI_TG4_COMPONENT_IN_SWIZZLE:
399 case PIPE_CAP_GLSL_ZERO_INIT:
400 case PIPE_CAP_ALLOW_DRAW_OUT_OF_ORDER:
401 return 0;
402
403 case PIPE_CAP_MAX_GS_INVOCATIONS:
404 return 32;
405
406 case PIPE_CAP_MAX_SHADER_BUFFER_SIZE_UINT:
407 return 1 << 27;
408
409 case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
410 case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
411 return 0;
412
413 case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
414 return 2047;
415
416 case PIPE_CAP_SURFACE_SAMPLE_COUNT:
417 return 0;
418 case PIPE_CAP_DEST_SURFACE_SRGB_CONTROL:
419 return 1;
420
421 case PIPE_CAP_MAX_VARYINGS:
422 return 8;
423
424 case PIPE_CAP_COMPUTE_GRID_INFO_LAST_BLOCK:
425 return 0;
426
427 case PIPE_CAP_COMPUTE_SHADER_DERIVATIVES:
428 return 0;
429
430 case PIPE_CAP_THROTTLE:
431 return 1;
432
433 case PIPE_CAP_TEXTURE_SHADOW_LOD:
434 return 0;
435
436 case PIPE_CAP_GL_SPIRV:
437 case PIPE_CAP_GL_SPIRV_VARIABLE_POINTERS:
438 return 0;
439
440 case PIPE_CAP_DEMOTE_TO_HELPER_INVOCATION:
441 return 0;
442
443 case PIPE_CAP_DMABUF:
444 #if defined(HAVE_LIBDRM) && (DETECT_OS_LINUX || DETECT_OS_BSD || DETECT_OS_MANAGARM)
445 fd = pscreen->get_screen_fd(pscreen);
446 if (fd != -1 && (drmGetCap(fd, DRM_CAP_PRIME, &cap) == 0))
447 return cap;
448 else
449 return 0;
450 #else
451 return 0;
452 #endif
453
454 case PIPE_CAP_CL_GL_SHARING:
455 return 0;
456
457 case PIPE_CAP_TEXTURE_SHADOW_MAP: /* Enables ARB_shadow */
458 return 1;
459
460 case PIPE_CAP_FLATSHADE:
461 case PIPE_CAP_ALPHA_TEST:
462 case PIPE_CAP_POINT_SIZE_FIXED:
463 case PIPE_CAP_TWO_SIDED_COLOR:
464 case PIPE_CAP_CLIP_PLANES:
465 return 1;
466
467 case PIPE_CAP_MAX_VERTEX_BUFFERS:
468 return 16;
469
470 case PIPE_CAP_OPENCL_INTEGER_FUNCTIONS:
471 case PIPE_CAP_INTEGER_MULTIPLY_32X16:
472 return 0;
473 case PIPE_CAP_NIR_IMAGES_AS_DEREF:
474 return 1;
475
476 case PIPE_CAP_FRONTEND_NOOP:
477 /* Enables INTEL_blackhole_render */
478 return 0;
479
480 case PIPE_CAP_PACKED_STREAM_OUTPUT:
481 return 1;
482
483 case PIPE_CAP_VIEWPORT_TRANSFORM_LOWERED:
484 case PIPE_CAP_PSIZ_CLAMPED:
485 case PIPE_CAP_MAP_UNSYNCHRONIZED_THREAD_SAFE:
486 return 0;
487
488 case PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE:
489 return 512 * 1024;
490
491 case PIPE_CAP_SYSTEM_SVM:
492 case PIPE_CAP_ALPHA_TO_COVERAGE_DITHER_CONTROL:
493 case PIPE_CAP_NO_CLIP_ON_COPY_TEX:
494 case PIPE_CAP_MAX_TEXTURE_MB:
495 case PIPE_CAP_PREFER_REAL_BUFFER_IN_CONSTBUF0:
496 return 0;
497
498 case PIPE_CAP_TEXRECT:
499 return 1;
500
501 case PIPE_CAP_SHADER_ATOMIC_INT64:
502 return 0;
503
504 case PIPE_CAP_SAMPLER_REDUCTION_MINMAX:
505 case PIPE_CAP_SAMPLER_REDUCTION_MINMAX_ARB:
506 return 0;
507
508 case PIPE_CAP_ALLOW_DYNAMIC_VAO_FASTPATH:
509 return 1;
510
511 case PIPE_CAP_EMULATE_NONFIXED_PRIMITIVE_RESTART:
512 case PIPE_CAP_DRAW_VERTEX_STATE:
513 return 0;
514
515 case PIPE_CAP_PREFER_POT_ALIGNED_VARYINGS:
516 return 0;
517
518 case PIPE_CAP_MAX_SPARSE_TEXTURE_SIZE:
519 case PIPE_CAP_MAX_SPARSE_3D_TEXTURE_SIZE:
520 case PIPE_CAP_MAX_SPARSE_ARRAY_TEXTURE_LAYERS:
521 case PIPE_CAP_SPARSE_TEXTURE_FULL_ARRAY_CUBE_MIPMAPS:
522 case PIPE_CAP_QUERY_SPARSE_TEXTURE_RESIDENCY:
523 case PIPE_CAP_CLAMP_SPARSE_TEXTURE_LOD:
524 case PIPE_CAP_TIMELINE_SEMAPHORE_IMPORT:
525 case PIPE_CAP_ALLOW_GLTHREAD_BUFFER_SUBDATA_OPT:
526 return 0;
527
528 case PIPE_CAP_MAX_CONSTANT_BUFFER_SIZE_UINT:
529 return pscreen->get_shader_param(pscreen, PIPE_SHADER_FRAGMENT,
530 PIPE_SHADER_CAP_MAX_CONST_BUFFER0_SIZE);
531
532 case PIPE_CAP_HARDWARE_GL_SELECT: {
533 /* =0: on CPU, always disabled
534 * >0: on GPU, enable by default, user can disable it manually
535 * <0: unknown, disable by default, user can enable it manually
536 */
537 int accel = pscreen->get_param(pscreen, PIPE_CAP_ACCELERATED);
538
539 return !!accel && debug_get_bool_option("MESA_HW_ACCEL_SELECT", accel > 0) &&
540 /* internal geometry shader need indirect array access */
541 pscreen->get_shader_param(pscreen, PIPE_SHADER_GEOMETRY,
542 PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR) &&
543 /* internal geometry shader need SSBO support */
544 pscreen->get_shader_param(pscreen, PIPE_SHADER_GEOMETRY,
545 PIPE_SHADER_CAP_MAX_SHADER_BUFFERS);
546 }
547
548 case PIPE_CAP_QUERY_TIMESTAMP_BITS:
549 return 64;
550
551 case PIPE_CAP_VALIDATE_ALL_DIRTY_STATES:
552 case PIPE_CAP_NULL_TEXTURES:
553 case PIPE_CAP_ASTC_VOID_EXTENTS_NEED_DENORM_FLUSH:
554 case PIPE_CAP_HAS_CONST_BW:
555 return 0;
556
557 case PIPE_CAP_PERFORMANCE_MONITOR:
558 return pscreen->get_driver_query_info && pscreen->get_driver_query_group_info &&
559 pscreen->get_driver_query_group_info(pscreen, 0, NULL) != 0;
560
561 default:
562 unreachable("bad PIPE_CAP_*");
563 }
564 }
565
u_default_get_timestamp(UNUSED struct pipe_screen * screen)566 uint64_t u_default_get_timestamp(UNUSED struct pipe_screen *screen)
567 {
568 return os_time_get_nano();
569 }
570
571 static uint32_t
hash_file_description(const void * key)572 hash_file_description(const void *key)
573 {
574 int fd = pointer_to_intptr(key);
575 struct stat stat;
576
577 // File descriptions can't be hashed, but it should be safe to assume
578 // that the same file description will always refer to he same file
579 if (fstat(fd, &stat) == -1)
580 return ~0; // Make sure fstat failing won't result in a random hash
581
582 return stat.st_dev ^ stat.st_ino ^ stat.st_rdev;
583 }
584
585
586 static bool
equal_file_description(const void * key1,const void * key2)587 equal_file_description(const void *key1, const void *key2)
588 {
589 int ret;
590 int fd1 = pointer_to_intptr(key1);
591 int fd2 = pointer_to_intptr(key2);
592 struct stat stat1, stat2;
593
594 // If the file descriptors are the same, the file description will be too
595 // This will also catch sentinels, such as -1
596 if (fd1 == fd2)
597 return true;
598
599 ret = os_same_file_description(fd1, fd2);
600 if (ret >= 0)
601 return (ret == 0);
602
603 {
604 static bool has_warned;
605 if (!has_warned)
606 fprintf(stderr, "os_same_file_description couldn't determine if "
607 "two DRM fds reference the same file description. (%s)\n"
608 "Let's just assume that file descriptors for the same file probably"
609 "share the file description instead. This may cause problems when"
610 "that isn't the case.\n", strerror(errno));
611 has_warned = true;
612 }
613
614 // Let's at least check that it's the same file, different files can't
615 // have the same file descriptions
616 fstat(fd1, &stat1);
617 fstat(fd2, &stat2);
618
619 return stat1.st_dev == stat2.st_dev &&
620 stat1.st_ino == stat2.st_ino &&
621 stat1.st_rdev == stat2.st_rdev;
622 }
623
624
625 static struct hash_table *
hash_table_create_file_description_keys(void)626 hash_table_create_file_description_keys(void)
627 {
628 return _mesa_hash_table_create(NULL, hash_file_description, equal_file_description);
629 }
630
631 static struct hash_table *fd_tab = NULL;
632
633 static simple_mtx_t screen_mutex = SIMPLE_MTX_INITIALIZER;
634
635 static void
drm_screen_destroy(struct pipe_screen * pscreen)636 drm_screen_destroy(struct pipe_screen *pscreen)
637 {
638 bool destroy;
639
640 simple_mtx_lock(&screen_mutex);
641 destroy = --pscreen->refcnt == 0;
642 if (destroy) {
643 int fd = pscreen->get_screen_fd(pscreen);
644 _mesa_hash_table_remove_key(fd_tab, intptr_to_pointer(fd));
645
646 if (!fd_tab->entries) {
647 _mesa_hash_table_destroy(fd_tab, NULL);
648 fd_tab = NULL;
649 }
650 }
651 simple_mtx_unlock(&screen_mutex);
652
653 if (destroy) {
654 pscreen->destroy = pscreen->winsys_priv;
655 pscreen->destroy(pscreen);
656 }
657 }
658
659 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)660 u_pipe_screen_lookup_or_create(int gpu_fd,
661 const struct pipe_screen_config *config,
662 struct renderonly *ro,
663 pipe_screen_create_function screen_create)
664 {
665 struct pipe_screen *pscreen = NULL;
666
667 simple_mtx_lock(&screen_mutex);
668 if (!fd_tab) {
669 fd_tab = hash_table_create_file_description_keys();
670 if (!fd_tab)
671 goto unlock;
672 }
673
674 pscreen = util_hash_table_get(fd_tab, intptr_to_pointer(gpu_fd));
675 if (pscreen) {
676 pscreen->refcnt++;
677 } else {
678 pscreen = screen_create(gpu_fd, config, ro);
679 if (pscreen) {
680 pscreen->refcnt = 1;
681 _mesa_hash_table_insert(fd_tab, intptr_to_pointer(gpu_fd), pscreen);
682
683 /* Bit of a hack, to avoid circular linkage dependency,
684 * ie. pipe driver having to call in to winsys, we
685 * override the pipe drivers screen->destroy() */
686 pscreen->winsys_priv = pscreen->destroy;
687 pscreen->destroy = drm_screen_destroy;
688 }
689 }
690
691 unlock:
692 simple_mtx_unlock(&screen_mutex);
693 return pscreen;
694 }
695