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1 /*
2  * XML DRI client-side driver configuration
3  * Copyright (C) 2003 Felix Kuehling
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included
13  * in all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * FELIX KUEHLING, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
21  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22  *
23  */
24 /**
25  * \file driconf.h
26  * \brief Pool of common options
27  * \author Felix Kuehling
28  *
29  * This file defines macros that can be used to construct
30  * driConfigOptions in the drivers.
31  */
32 
33 #ifndef __DRICONF_H
34 #define __DRICONF_H
35 
36 #include "xmlconfig.h"
37 
38 /*
39  * generic macros
40  */
41 
42 /** \brief Names a section of related options to follow */
43 #define DRI_CONF_SECTION(text) { .desc = text, .info = { .type = DRI_SECTION } },
44 #define DRI_CONF_SECTION_END
45 
46 /** \brief End an option description */
47 #define DRI_CONF_OPT_END },
48 
49 /** \brief A verbal description (empty version) */
50 #define DRI_CONF_DESC(text) .desc = text,
51 
52 /** \brief A verbal description of an enum value */
53 #define DRI_CONF_ENUM(_value,text) { .value = _value, .desc = text },
54 
55 #define DRI_CONF_RANGE_I(min, max)              \
56       .range = {                                \
57          .start = { ._int = min },              \
58          .end = { ._int = max },                \
59       }                                         \
60 
61 #define DRI_CONF_RANGE_F(min, max)              \
62       .range = {                                \
63          .start = { ._float = min },            \
64          .end = { ._float = max },              \
65       }                                         \
66 
67 /**
68  * \brief A boolean option definition, with the default value passed in as a
69  * string
70  */
71 
72 #define DRI_CONF_OPT_B(_name, def, _desc) {                     \
73       .desc = _desc,                                            \
74       .info = {                                                 \
75          .name = #_name,                                        \
76          .type = DRI_BOOL,                                      \
77       },                                                        \
78       .value = { ._bool = def },                                \
79    },
80 
81 #define DRI_CONF_OPT_I(_name, def, min, max, _desc) {           \
82       .desc = _desc,                                            \
83       .info = {                                                 \
84          .name = #_name,                                        \
85          .type = DRI_INT,                                       \
86          DRI_CONF_RANGE_I(min, max),                            \
87       },                                                        \
88       .value = { ._int = def },                                 \
89    },
90 
91 #define DRI_CONF_OPT_F(_name, def, min, max, _desc) {           \
92       .desc = _desc,                                            \
93       .info = {                                                 \
94          .name = #_name,                                        \
95          .type = DRI_FLOAT,                                     \
96          DRI_CONF_RANGE_F(min, max),                            \
97       },                                                        \
98       .value = { ._float = def },                               \
99    },
100 
101 #define DRI_CONF_OPT_E(_name, def, min, max, _desc, values) {   \
102       .desc = _desc,                                            \
103       .info = {                                                 \
104          .name = #_name,                                        \
105          .type = DRI_ENUM,                                      \
106          DRI_CONF_RANGE_I(min, max),                            \
107       },                                                        \
108       .value = { ._int = def },                                 \
109       .enums = { values },                                      \
110    },
111 
112 #define DRI_CONF_OPT_S(_name, def, _desc) {                     \
113       .desc = _desc,                                            \
114       .info = {                                                 \
115          .name = #_name,                                        \
116          .type = DRI_STRING,                                    \
117       },                                                        \
118       .value = { ._string = #def },                             \
119    },
120 
121 /**
122  * \brief Debugging options
123  */
124 #define DRI_CONF_SECTION_DEBUG DRI_CONF_SECTION("Debugging")
125 
126 #define DRI_CONF_ALWAYS_FLUSH_BATCH(def) \
127    DRI_CONF_OPT_B(always_flush_batch, def,                              \
128                   "Enable flushing batchbuffer after each draw call")
129 
130 #define DRI_CONF_ALWAYS_FLUSH_CACHE(def) \
131    DRI_CONF_OPT_B(always_flush_cache, def, \
132                   "Enable flushing GPU caches with each draw call")
133 
134 #define DRI_CONF_DISABLE_THROTTLING(def) \
135    DRI_CONF_OPT_B(disable_throttling, def, \
136                   "Disable throttling on first batch after flush")
137 
138 #define DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(def) \
139    DRI_CONF_OPT_B(force_glsl_extensions_warn, def, \
140                   "Force GLSL extension default behavior to 'warn'")
141 
142 #define DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED(def) \
143    DRI_CONF_OPT_B(disable_blend_func_extended, def, \
144                   "Disable dual source blending")
145 
146 #define DRI_CONF_DISABLE_ARB_GPU_SHADER5(def) \
147    DRI_CONF_OPT_B(disable_arb_gpu_shader5, def, \
148                   "Disable GL_ARB_gpu_shader5")
149 
150 #define DRI_CONF_DUAL_COLOR_BLEND_BY_LOCATION(def) \
151    DRI_CONF_OPT_B(dual_color_blend_by_location, def, \
152                   "Identify dual color blending sources by location rather than index")
153 
154 #define DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS(def) \
155    DRI_CONF_OPT_B(disable_glsl_line_continuations, def, \
156                   "Disable backslash-based line continuations in GLSL source")
157 
158 #define DRI_CONF_FORCE_GLSL_VERSION(def) \
159    DRI_CONF_OPT_I(force_glsl_version, def, 0, 999, \
160                   "Force a default GLSL version for shaders that lack an explicit #version line")
161 
162 #define DRI_CONF_ALLOW_EXTRA_PP_TOKENS(def) \
163    DRI_CONF_OPT_B(allow_extra_pp_tokens, def, \
164                   "Allow extra tokens at end of preprocessor directives.")
165 
166 #define DRI_CONF_ALLOW_GLSL_EXTENSION_DIRECTIVE_MIDSHADER(def) \
167    DRI_CONF_OPT_B(allow_glsl_extension_directive_midshader, def, \
168                   "Allow GLSL #extension directives in the middle of shaders")
169 
170 #define DRI_CONF_ALLOW_GLSL_120_SUBSET_IN_110(def) \
171    DRI_CONF_OPT_B(allow_glsl_120_subset_in_110, def, \
172                   "Allow a subset of GLSL 1.20 in GLSL 1.10 as needed by SPECviewperf13")
173 
174 #define DRI_CONF_ALLOW_GLSL_BUILTIN_CONST_EXPRESSION(def) \
175    DRI_CONF_OPT_B(allow_glsl_builtin_const_expression, def, \
176                   "Allow builtins as part of constant expressions")
177 
178 #define DRI_CONF_ALLOW_GLSL_RELAXED_ES(def) \
179    DRI_CONF_OPT_B(allow_glsl_relaxed_es, def, \
180                   "Allow some relaxation of GLSL ES shader restrictions")
181 
182 #define DRI_CONF_ALLOW_GLSL_BUILTIN_VARIABLE_REDECLARATION(def) \
183    DRI_CONF_OPT_B(allow_glsl_builtin_variable_redeclaration, def, \
184                   "Allow GLSL built-in variables to be redeclared verbatim")
185 
186 #define DRI_CONF_ALLOW_HIGHER_COMPAT_VERSION(def) \
187    DRI_CONF_OPT_B(allow_higher_compat_version, def, \
188                   "Allow a higher compat profile (version 3.1+) for apps that request it")
189 
190 #define DRI_CONF_FORCE_GLSL_ABS_SQRT(def) \
191    DRI_CONF_OPT_B(force_glsl_abs_sqrt, def,                             \
192                   "Force computing the absolute value for sqrt() and inversesqrt()")
193 
194 #define DRI_CONF_GLSL_CORRECT_DERIVATIVES_AFTER_DISCARD(def) \
195    DRI_CONF_OPT_B(glsl_correct_derivatives_after_discard, def, \
196                   "Implicit and explicit derivatives after a discard behave as if the discard didn't happen")
197 
198 #define DRI_CONF_ALLOW_GLSL_CROSS_STAGE_INTERPOLATION_MISMATCH(def) \
199    DRI_CONF_OPT_B(allow_glsl_cross_stage_interpolation_mismatch, def,   \
200                   "Allow interpolation qualifier mismatch across shader stages")
201 
202 #define DRI_CONF_ALLOW_DRAW_OUT_OF_ORDER(def) \
203    DRI_CONF_OPT_B(allow_draw_out_of_order, def, \
204                   "Allow out-of-order draw optimizations. Set when Z fighting doesn't have to be accurate.")
205 
206 #define DRI_CONF_FORCE_GL_VENDOR(def) \
207    DRI_CONF_OPT_S(force_gl_vendor, def, "Override GPU vendor string.")
208 
209 #define DRI_CONF_FORCE_COMPAT_PROFILE(def) \
210    DRI_CONF_OPT_B(force_compat_profile, def, \
211                   "Force an OpenGL compatibility context")
212 
213 #define DRI_CONF_OVERRIDE_VRAM_SIZE() \
214    DRI_CONF_OPT_I(override_vram_size, -1, -1, 2147483647, \
215                   "Override the VRAM size advertised to the application in MiB (-1 = default)")
216 
217 #define DRI_CONF_FORCE_GL_NAMES_REUSE(def) \
218    DRI_CONF_OPT_B(force_gl_names_reuse, def, "Force GL names reuse")
219 
220 #define DRI_CONF_GLX_EXTENSION_OVERRIDE(def) \
221    DRI_CONF_OPT_S(glx_extension_override, def, \
222                   "Allow enabling/disabling a list of GLX extensions")
223 
224 #define DRI_CONF_INDIRECT_GL_EXTENSION_OVERRIDE(def) \
225    DRI_CONF_OPT_S(indirect_gl_extension_override, def, \
226                   "Allow enabling/disabling a list of indirect-GL extensions")
227 
228 #define DRI_CONF_DISABLE_PROTECTED_CONTENT_CHECK(def) \
229    DRI_CONF_OPT_B(disable_protected_content_check, def, \
230                   "Don't reject image import if protected_content attribute doesn't match")
231 
232 /**
233  * \brief Image quality-related options
234  */
235 #define DRI_CONF_SECTION_QUALITY DRI_CONF_SECTION("Image Quality")
236 
237 #define DRI_CONF_PRECISE_TRIG(def) \
238    DRI_CONF_OPT_B(precise_trig, def, \
239                   "Prefer accuracy over performance in trig functions")
240 
241 #define DRI_CONF_PP_CELSHADE(def) \
242    DRI_CONF_OPT_E(pp_celshade, def, 0, 1, \
243                   "A post-processing filter to cel-shade the output", \
244                   )
245 
246 #define DRI_CONF_PP_NORED(def) \
247    DRI_CONF_OPT_E(pp_nored, def, 0, 1, \
248                   "A post-processing filter to remove the red channel", \
249                   )
250 
251 #define DRI_CONF_PP_NOGREEN(def) \
252    DRI_CONF_OPT_E(pp_nogreen, def, 0, 1, \
253                   "A post-processing filter to remove the green channel", \
254                   )
255 
256 #define DRI_CONF_PP_NOBLUE(def) \
257    DRI_CONF_OPT_E(pp_noblue, def, 0, 1, \
258                   "A post-processing filter to remove the blue channel", \
259                   )
260 
261 #define DRI_CONF_PP_JIMENEZMLAA(def,min,max) \
262    DRI_CONF_OPT_I(pp_jimenezmlaa, def, min, max, \
263                   "Morphological anti-aliasing based on Jimenez' MLAA. 0 to disable, 8 for default quality")
264 
265 #define DRI_CONF_PP_JIMENEZMLAA_COLOR(def,min,max) \
266    DRI_CONF_OPT_I(pp_jimenezmlaa_color, def, min, max, \
267                   "Morphological anti-aliasing based on Jimenez' MLAA. 0 to disable, 8 for default quality. Color version, usable with 2d GL apps")
268 
269 /**
270  * \brief Performance-related options
271  */
272 #define DRI_CONF_SECTION_PERFORMANCE DRI_CONF_SECTION("Performance")
273 
274 #define DRI_CONF_VBLANK_NEVER 0
275 #define DRI_CONF_VBLANK_DEF_INTERVAL_0 1
276 #define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
277 #define DRI_CONF_VBLANK_ALWAYS_SYNC 3
278 #define DRI_CONF_VBLANK_MODE(def) \
279    DRI_CONF_OPT_E(vblank_mode, def, 0, 3, \
280                   "Synchronization with vertical refresh (swap intervals)", \
281                   DRI_CONF_ENUM(0,"Never synchronize with vertical refresh, ignore application's choice") \
282                   DRI_CONF_ENUM(1,"Initial swap interval 0, obey application's choice") \
283                   DRI_CONF_ENUM(2,"Initial swap interval 1, obey application's choice") \
284                   DRI_CONF_ENUM(3,"Always synchronize with vertical refresh, application chooses the minimum swap interval"))
285 
286 #define DRI_CONF_ADAPTIVE_SYNC(def) \
287    DRI_CONF_OPT_B(adaptive_sync,def, \
288                   "Adapt the monitor sync to the application performance (when possible)")
289 
290 #define DRI_CONF_VK_WSI_FORCE_BGRA8_UNORM_FIRST(def) \
291    DRI_CONF_OPT_B(vk_wsi_force_bgra8_unorm_first, def, \
292                   "Force vkGetPhysicalDeviceSurfaceFormatsKHR to return VK_FORMAT_B8G8R8A8_UNORM as the first format")
293 
294 #define DRI_CONF_VK_X11_OVERRIDE_MIN_IMAGE_COUNT(def) \
295    DRI_CONF_OPT_I(vk_x11_override_min_image_count, def, 0, 999, \
296                   "Override the VkSurfaceCapabilitiesKHR::minImageCount (0 = no override)")
297 
298 #define DRI_CONF_VK_X11_STRICT_IMAGE_COUNT(def) \
299    DRI_CONF_OPT_B(vk_x11_strict_image_count, def, \
300                   "Force the X11 WSI to create exactly the number of image specified by the application in VkSwapchainCreateInfoKHR::minImageCount")
301 
302 #define DRI_CONF_VK_X11_ENSURE_MIN_IMAGE_COUNT(def) \
303    DRI_CONF_OPT_B(vk_x11_ensure_min_image_count, def, \
304                   "Force the X11 WSI to create at least the number of image specified by the driver in VkSurfaceCapabilitiesKHR::minImageCount")
305 
306 #define DRI_CONF_MESA_GLTHREAD(def) \
307    DRI_CONF_OPT_B(mesa_glthread, def, \
308                   "Enable offloading GL driver work to a separate thread")
309 
310 #define DRI_CONF_MESA_NO_ERROR(def) \
311    DRI_CONF_OPT_B(mesa_no_error, def, \
312                   "Disable GL driver error checking")
313 
314 #define DRI_CONF_DISABLE_EXT_BUFFER_AGE(def) \
315    DRI_CONF_OPT_B(glx_disable_ext_buffer_age, def, \
316                   "Disable the GLX_EXT_buffer_age extension")
317 
318 #define DRI_CONF_DISABLE_OML_SYNC_CONTROL(def) \
319    DRI_CONF_OPT_B(glx_disable_oml_sync_control, def, \
320                   "Disable the GLX_OML_sync_control extension")
321 
322 #define DRI_CONF_DISABLE_SGI_VIDEO_SYNC(def) \
323    DRI_CONF_OPT_B(glx_disable_sgi_video_sync, def, \
324                   "Disable the GLX_SGI_video_sync extension")
325 
326 
327 
328 /**
329  * \brief Miscellaneous configuration options
330  */
331 #define DRI_CONF_SECTION_MISCELLANEOUS DRI_CONF_SECTION("Miscellaneous")
332 
333 #define DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER(def) \
334    DRI_CONF_OPT_B(always_have_depth_buffer, def, \
335                   "Create all visuals with a depth buffer")
336 
337 #define DRI_CONF_GLSL_ZERO_INIT(def) \
338    DRI_CONF_OPT_B(glsl_zero_init, def, \
339                   "Force uninitialized variables to default to zero")
340 
341 #define DRI_CONF_VS_POSITION_ALWAYS_INVARIANT(def) \
342    DRI_CONF_OPT_B(vs_position_always_invariant, def, \
343                   "Force the vertex shader's gl_Position output to be considered 'invariant'")
344 
345 #define DRI_CONF_ALLOW_RGB10_CONFIGS(def) \
346    DRI_CONF_OPT_B(allow_rgb10_configs, def, \
347                   "Allow exposure of visuals and fbconfigs with rgb10a2 formats")
348 
349 #define DRI_CONF_ALLOW_RGB565_CONFIGS(def) \
350    DRI_CONF_OPT_B(allow_rgb565_configs, def, \
351                   "Allow exposure of visuals and fbconfigs with rgb565 formats")
352 
353 #define DRI_CONF_ALLOW_FP16_CONFIGS(def) \
354    DRI_CONF_OPT_B(allow_fp16_configs, def, \
355                   "Allow exposure of visuals and fbconfigs with fp16 formats")
356 
357 #define DRI_CONF_FORCE_INTEGER_TEX_NEAREST(def) \
358    DRI_CONF_OPT_B(force_integer_tex_nearest, def, \
359                   "Force integer textures to use nearest filtering")
360 
361 /**
362  * \brief Initialization configuration options
363  */
364 #define DRI_CONF_SECTION_INITIALIZATION DRI_CONF_SECTION("Initialization")
365 
366 #define DRI_CONF_DEVICE_ID_PATH_TAG(def) \
367    DRI_CONF_OPT_S(device_id, def, "Define the graphic device to use if possible")
368 
369 #define DRI_CONF_DRI_DRIVER(def) \
370    DRI_CONF_OPT_S(dri_driver, def, "Override the DRI driver to load")
371 
372 /**
373  * \brief Gallium-Nine specific configuration options
374  */
375 
376 #define DRI_CONF_SECTION_NINE DRI_CONF_SECTION("Gallium Nine")
377 
378 #define DRI_CONF_NINE_THROTTLE(def) \
379    DRI_CONF_OPT_I(throttle_value, def, 0, 0, \
380                   "Define the throttling value. -1 for no throttling, -2 for default (usually 2), 0 for glfinish behaviour")
381 
382 #define DRI_CONF_NINE_THREADSUBMIT(def) \
383    DRI_CONF_OPT_B(thread_submit, def, \
384                   "Use an additional thread to submit buffers.")
385 
386 #define DRI_CONF_NINE_OVERRIDEVENDOR(def) \
387    DRI_CONF_OPT_I(override_vendorid, def, 0, 0, \
388                   "Define the vendor_id to report. This allows faking another hardware vendor.")
389 
390 #define DRI_CONF_NINE_ALLOWDISCARDDELAYEDRELEASE(def) \
391    DRI_CONF_OPT_B(discard_delayed_release, def, \
392                   "Whether to allow the display server to release buffers with a delay when using d3d's presentation mode DISCARD. Default to true. Set to false if suffering from lag (thread_submit=true can also help in this situation).")
393 
394 #define DRI_CONF_NINE_TEARFREEDISCARD(def) \
395    DRI_CONF_OPT_B(tearfree_discard, def, \
396                   "Whether to make d3d's presentation mode DISCARD (games usually use that mode) Tear Free. If rendering above screen refresh, some frames will get skipped. false by default.")
397 
398 #define DRI_CONF_NINE_CSMT(def) \
399    DRI_CONF_OPT_I(csmt_int, def, 0, 0, \
400                   "If set to 1, force gallium nine CSMT. If set to 0, disable it. By default (-1) CSMT is enabled on known thread-safe drivers.")
401 
402 #define DRI_CONF_NINE_DYNAMICTEXTUREWORKAROUND(def) \
403    DRI_CONF_OPT_B(dynamic_texture_workaround, def, \
404                   "If set to true, use a ram intermediate buffer for dynamic textures. Increases ram usage, which can cause out of memory issues, but can fix glitches for some games.")
405 
406 #define DRI_CONF_NINE_SHADERINLINECONSTANTS(def) \
407    DRI_CONF_OPT_B(shader_inline_constants, def, \
408                   "If set to true, recompile shaders with integer or boolean constants when the values are known. Can cause stutter, but can increase slightly performance.")
409 
410 /**
411  * \brief radeonsi specific configuration options
412  */
413 
414 #define DRI_CONF_RADEONSI_ASSUME_NO_Z_FIGHTS(def) \
415    DRI_CONF_OPT_B(radeonsi_assume_no_z_fights, def, \
416                   "Assume no Z fights (enables aggressive out-of-order rasterization to improve performance; may cause rendering errors)")
417 
418 #define DRI_CONF_RADEONSI_COMMUTATIVE_BLEND_ADD(def) \
419    DRI_CONF_OPT_B(radeonsi_commutative_blend_add, def, \
420                   "Commutative additive blending optimizations (may cause rendering errors)")
421 
422 #define DRI_CONF_RADEONSI_ZERO_ALL_VRAM_ALLOCS(def) \
423    DRI_CONF_OPT_B(radeonsi_zerovram, def, \
424                   "Zero all vram allocations")
425 
426 #define DRI_CONF_V3D_NONMSAA_TEXTURE_SIZE_LIMIT(def) \
427    DRI_CONF_OPT_B(v3d_nonmsaa_texture_size_limit, def, \
428                   "Report the non-MSAA-only texture size limit")
429 
430 /**
431  * \brief virgl specific configuration options
432  */
433 
434 #define DRI_CONF_GLES_EMULATE_BGRA(def) \
435    DRI_CONF_OPT_B(gles_emulate_bgra, def, \
436                   "On GLES emulate BGRA formats by using a swizzled RGBA format")
437 
438 #define DRI_CONF_GLES_APPLY_BGRA_DEST_SWIZZLE(def) \
439    DRI_CONF_OPT_B(gles_apply_bgra_dest_swizzle, def, \
440                   "When the BGRA formats are emulated by using swizzled RGBA formats on GLES apply the swizzle when writing")
441 
442 #define DRI_CONF_GLES_SAMPLES_PASSED_VALUE(def, minimum, maximum) \
443    DRI_CONF_OPT_I(gles_samples_passed_value, def, minimum, maximum, \
444                   "GL_SAMPLES_PASSED value when emulated by GL_ANY_SAMPLES_PASSED")
445 
446 /**
447  * \brief RADV specific configuration options
448  */
449 
450 #define DRI_CONF_RADV_REPORT_LLVM9_VERSION_STRING(def) \
451    DRI_CONF_OPT_B(radv_report_llvm9_version_string, def, \
452                   "Report LLVM 9.0.1 for games that apply shader workarounds if missing (for ACO only)")
453 
454 #define DRI_CONF_RADV_ENABLE_MRT_OUTPUT_NAN_FIXUP(def) \
455    DRI_CONF_OPT_B(radv_enable_mrt_output_nan_fixup, def, \
456                   "Replace NaN outputs from fragment shaders with zeroes for floating point render target")
457 
458 #define DRI_CONF_RADV_NO_DYNAMIC_BOUNDS(def) \
459    DRI_CONF_OPT_B(radv_no_dynamic_bounds, def, \
460                   "Disabling bounds checking for dynamic buffer descriptors")
461 
462 #define DRI_CONF_RADV_OVERRIDE_UNIFORM_OFFSET_ALIGNMENT(def) \
463    DRI_CONF_OPT_I(radv_override_uniform_offset_alignment, def, 0, 128, \
464                   "Override the minUniformBufferOffsetAlignment exposed to the application. (0 = default)")
465 
466 #endif
467