src/amd/vulkan/radv_extensions.py

   1 COPYRIGHT = """\
   2 /*
   3  * Copyright 2017 Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25 """
  26
  27 import argparse
  28 import copy
  29 import re
  30 import xml.etree.cElementTree as et
  31
  32 from mako.template import Template
  33
  34 MAX_API_VERSION = '1.2.128'
  35
  36 class Extension:
  37     def __init__(self, name, ext_version, enable):
  38         self.name = name
  39         self.ext_version = int(ext_version)
  40         if enable is True:
  41             self.enable = 'true';
  42         elif enable is False:
  43             self.enable = 'false';
  44         else:
  45             self.enable = enable;
  46
  47 # On Android, we disable all surface and swapchain extensions. Android's Vulkan
  48 # loader implements VK_KHR_surface and VK_KHR_swapchain, and applications
  49 # cannot access the driver's implementation. Moreoever, if the driver exposes
  50 # the those extension strings, then tests dEQP-VK.api.info.instance.extensions
  51 # and dEQP-VK.api.info.device fail due to the duplicated strings.
  52 EXTENSIONS = [
  53     Extension('VK_ANDROID_external_memory_android_hardware_buffer', 3, 'RADV_SUPPORT_ANDROID_HARDWARE_BUFFER  && device->rad_info.has_syncobj_wait_for_submit'),
  54     Extension('VK_ANDROID_native_buffer',                 5, 'ANDROID && device->rad_info.has_syncobj_wait_for_submit'),
  55     Extension('VK_KHR_16bit_storage',                     1, '!device->use_aco'),
  56     Extension('VK_KHR_bind_memory2',                      1, True),
  57     Extension('VK_KHR_buffer_device_address',             1, True),
  58     Extension('VK_KHR_create_renderpass2',                1, True),
  59     Extension('VK_KHR_dedicated_allocation',              1, True),
  60     Extension('VK_KHR_depth_stencil_resolve',             1, True),
  61     Extension('VK_KHR_descriptor_update_template',        1, True),
  62     Extension('VK_KHR_device_group',                      1, True),
  63     Extension('VK_KHR_device_group_creation',             1, True),
  64     Extension('VK_KHR_draw_indirect_count',               1, True),
  65     Extension('VK_KHR_driver_properties',                 1, True),
  66     Extension('VK_KHR_external_fence',                    1, 'device->rad_info.has_syncobj_wait_for_submit'),
  67     Extension('VK_KHR_external_fence_capabilities',       1, True),
  68     Extension('VK_KHR_external_fence_fd',                 1, 'device->rad_info.has_syncobj_wait_for_submit'),
  69     Extension('VK_KHR_external_memory',                   1, True),
  70     Extension('VK_KHR_external_memory_capabilities',      1, True),
  71     Extension('VK_KHR_external_memory_fd',                1, True),
  72     Extension('VK_KHR_external_semaphore',                1, 'device->rad_info.has_syncobj'),
  73     Extension('VK_KHR_external_semaphore_capabilities',   1, True),
  74     Extension('VK_KHR_external_semaphore_fd',             1, 'device->rad_info.has_syncobj'),
  75     Extension('VK_KHR_get_display_properties2',           1, 'VK_USE_PLATFORM_DISPLAY_KHR'),
  76     Extension('VK_KHR_get_memory_requirements2',          1, True),
  77     Extension('VK_KHR_get_physical_device_properties2',   1, True),
  78     Extension('VK_KHR_get_surface_capabilities2',         1, 'RADV_HAS_SURFACE'),
  79     Extension('VK_KHR_image_format_list',                 1, True),
  80     Extension('VK_KHR_imageless_framebuffer',             1, True),
  81     Extension('VK_KHR_incremental_present',               1, 'RADV_HAS_SURFACE'),
  82     Extension('VK_KHR_maintenance1',                      1, True),
  83     Extension('VK_KHR_maintenance2',                      1, True),
  84     Extension('VK_KHR_maintenance3',                      1, True),
  85     Extension('VK_KHR_pipeline_executable_properties',    1, True),
  86     Extension('VK_KHR_push_descriptor',                   1, True),
  87     Extension('VK_KHR_relaxed_block_layout',              1, True),
  88     Extension('VK_KHR_sampler_mirror_clamp_to_edge',      1, True),
  89     Extension('VK_KHR_sampler_ycbcr_conversion',          1, True),
  90     Extension('VK_KHR_separate_depth_stencil_layouts',    1, True),
  91     Extension('VK_KHR_shader_atomic_int64',               1, 'LLVM_VERSION_MAJOR >= 9'),
  92     Extension('VK_KHR_shader_clock',                      1, True),
  93     Extension('VK_KHR_shader_draw_parameters',            1, True),
  94     Extension('VK_KHR_shader_float_controls',             1, True),
  95     Extension('VK_KHR_shader_float16_int8',               1, '!device->use_aco'),
  96     Extension('VK_KHR_shader_non_semantic_info',          1, True),
  97     Extension('VK_KHR_shader_subgroup_extended_types',    1, True),
  98     Extension('VK_KHR_spirv_1_4',                         1, True),
  99     Extension('VK_KHR_storage_buffer_storage_class',      1, True),
 100     Extension('VK_KHR_surface',                          25, 'RADV_HAS_SURFACE'),
 101     Extension('VK_KHR_surface_protected_capabilities',    1, 'RADV_HAS_SURFACE'),
 102     Extension('VK_KHR_swapchain',                        68, 'RADV_HAS_SURFACE'),
 103     Extension('VK_KHR_swapchain_mutable_format',          1, 'RADV_HAS_SURFACE'),
 104     Extension('VK_KHR_timeline_semaphore',                2, 'device->rad_info.has_syncobj_wait_for_submit'),
 105     Extension('VK_KHR_uniform_buffer_standard_layout',    1, True),
 106     Extension('VK_KHR_variable_pointers',                 1, True),
 107     Extension('VK_KHR_wayland_surface',                   6, 'VK_USE_PLATFORM_WAYLAND_KHR'),
 108     Extension('VK_KHR_xcb_surface',                       6, 'VK_USE_PLATFORM_XCB_KHR'),
 109     Extension('VK_KHR_xlib_surface',                      6, 'VK_USE_PLATFORM_XLIB_KHR'),
 110     Extension('VK_KHR_multiview',                         1, True),
 111     Extension('VK_KHR_display',                          23, 'VK_USE_PLATFORM_DISPLAY_KHR'),
 112     Extension('VK_KHR_8bit_storage',                      1, '!device->use_aco'),
 113     Extension('VK_EXT_direct_mode_display',               1, 'VK_USE_PLATFORM_DISPLAY_KHR'),
 114     Extension('VK_EXT_acquire_xlib_display',              1, 'VK_USE_PLATFORM_XLIB_XRANDR_EXT'),
 115     Extension('VK_EXT_buffer_device_address',             1, True),
 116     Extension('VK_EXT_calibrated_timestamps',             1, True),
 117     Extension('VK_EXT_conditional_rendering',             1, True),
 118     Extension('VK_EXT_conservative_rasterization',        1, 'device->rad_info.chip_class >= GFX9'),
 119     Extension('VK_EXT_display_surface_counter',           1, 'VK_USE_PLATFORM_DISPLAY_KHR'),
 120     Extension('VK_EXT_display_control',                   1, 'VK_USE_PLATFORM_DISPLAY_KHR'),
 121     Extension('VK_EXT_debug_report',                      9, True),
 122     Extension('VK_EXT_depth_clip_enable',                 1, True),
 123     Extension('VK_EXT_depth_range_unrestricted',          1, True),
 124     Extension('VK_EXT_descriptor_indexing',               2, True),
 125     Extension('VK_EXT_discard_rectangles',                1, True),
 126     Extension('VK_EXT_external_memory_dma_buf',           1, True),
 127     Extension('VK_EXT_external_memory_host',              1, 'device->rad_info.has_userptr'),
 128     Extension('VK_EXT_global_priority',                   1, 'device->rad_info.has_ctx_priority'),
 129     Extension('VK_EXT_host_query_reset',                  1, True),
 130     Extension('VK_EXT_index_type_uint8',                  1, 'device->rad_info.chip_class >= GFX8'),
 131     Extension('VK_EXT_inline_uniform_block',              1, True),
 132     # Disable line rasterization on GFX9 until the CTS failures have been resolved.
 133     Extension('VK_EXT_line_rasterization',                1, 'device->rad_info.chip_class != GFX9'),
 134     Extension('VK_EXT_memory_budget',                     1, True),
 135     Extension('VK_EXT_memory_priority',                   1, True),
 136     Extension('VK_EXT_pci_bus_info',                      2, True),
 137     Extension('VK_EXT_pipeline_creation_feedback',        1, True),
 138     Extension('VK_EXT_post_depth_coverage',               1, 'device->rad_info.chip_class >= GFX10'),
 139     Extension('VK_EXT_queue_family_foreign',              1, True),
 140     # Disable sample locations on GFX10 until the CTS failures have been resolved.
 141     Extension('VK_EXT_sample_locations',                  1, 'device->rad_info.chip_class < GFX10'),
 142     Extension('VK_EXT_sampler_filter_minmax',             1, True),
 143     Extension('VK_EXT_scalar_block_layout',               1, 'device->rad_info.chip_class >= GFX7'),
 144     Extension('VK_EXT_shader_demote_to_helper_invocation',1, 'device->use_aco'),
 145     Extension('VK_EXT_shader_viewport_index_layer',       1, True),
 146     Extension('VK_EXT_shader_stencil_export',             1, True),
 147     Extension('VK_EXT_shader_subgroup_ballot',            1, True),
 148     Extension('VK_EXT_shader_subgroup_vote',              1, True),
 149     Extension('VK_EXT_subgroup_size_control',             2, '!device->use_aco'),
 150     Extension('VK_EXT_texel_buffer_alignment',            1, True),
 151     Extension('VK_EXT_transform_feedback',                1, True),
 152     Extension('VK_EXT_vertex_attribute_divisor',          3, True),
 153     Extension('VK_EXT_ycbcr_image_arrays',                1, True),
 154     Extension('VK_AMD_buffer_marker',                     1, True),
 155     Extension('VK_AMD_device_coherent_memory',            1, True),
 156     Extension('VK_AMD_draw_indirect_count',               1, True),
 157     Extension('VK_AMD_gcn_shader',                        1, True),
 158     Extension('VK_AMD_gpu_shader_half_float',             1, '!device->use_aco && device->rad_info.chip_class >= GFX9'),
 159     Extension('VK_AMD_gpu_shader_int16',                  1, '!device->use_aco && device->rad_info.chip_class >= GFX9'),
 160     # Disable mixed attachment samples on GFX6-GFX7 until the CTS failures have been resolved.
 161     Extension('VK_AMD_mixed_attachment_samples',          1, 'device->rad_info.chip_class >= GFX8'),
 162     Extension('VK_AMD_rasterization_order',               1, 'device->rad_info.has_out_of_order_rast'),
 163     Extension('VK_AMD_shader_ballot',                     1, 'device->use_shader_ballot'),
 164     Extension('VK_AMD_shader_core_properties',            1, True),
 165     Extension('VK_AMD_shader_core_properties2',           1, True),
 166     Extension('VK_AMD_shader_explicit_vertex_parameter',  1, True),
 167     Extension('VK_AMD_shader_image_load_store_lod',       1, True),
 168     Extension('VK_AMD_shader_fragment_mask',              1, True),
 169     Extension('VK_AMD_shader_info',                       1, True),
 170     Extension('VK_AMD_shader_trinary_minmax',             1, True),
 171     Extension('VK_GOOGLE_decorate_string',                1, True),
 172     Extension('VK_GOOGLE_hlsl_functionality1',            1, True),
 173     Extension('VK_NV_compute_shader_derivatives',         1, True),
 174 ]
 175
 176 class VkVersion:
 177     def __init__(self, string):
 178         split = string.split('.')
 179         self.major = int(split[0])
 180         self.minor = int(split[1])
 181         if len(split) > 2:
 182             assert len(split) == 3
 183             self.patch = int(split[2])
 184         else:
 185             self.patch = None
 186
 187         # Sanity check.  The range bits are required by the definition of the
 188         # VK_MAKE_VERSION macro
 189         assert self.major < 1024 and self.minor < 1024
 190         assert self.patch is None or self.patch < 4096
 191         assert(str(self) == string)
 192
 193     def __str__(self):
 194         ver_list = [str(self.major), str(self.minor)]
 195         if self.patch is not None:
 196             ver_list.append(str(self.patch))
 197         return '.'.join(ver_list)
 198
 199     def c_vk_version(self):
 200         patch = self.patch if self.patch is not None else 0
 201         ver_list = [str(self.major), str(self.minor), str(patch)]
 202         return 'VK_MAKE_VERSION(' + ', '.join(ver_list) + ')'
 203
 204     def __int_ver(self):
 205         # This is just an expansion of VK_VERSION
 206         patch = self.patch if self.patch is not None else 0
 207         return (self.major << 22) | (self.minor << 12) | patch
 208
 209     def __gt__(self, other):
 210         # If only one of them has a patch version, "ignore" it by making
 211         # other's patch version match self.
 212         if (self.patch is None) != (other.patch is None):
 213             other = copy.copy(other)
 214             other.patch = self.patch
 215
 216         return self.__int_ver() > other.__int_ver()
 217
 218
 219 MAX_API_VERSION = VkVersion(MAX_API_VERSION)
 220
 221 def _init_exts_from_xml(xml):
 222     """ Walk the Vulkan XML and fill out extra extension information. """
 223
 224     xml = et.parse(xml)
 225
 226     ext_name_map = {}
 227     for ext in EXTENSIONS:
 228         ext_name_map[ext.name] = ext
 229
 230     for ext_elem in xml.findall('.extensions/extension'):
 231         ext_name = ext_elem.attrib['name']
 232         if ext_name not in ext_name_map:
 233             continue
 234
 235         ext = ext_name_map[ext_name]
 236         ext.type = ext_elem.attrib['type']
 237         ext.promotedto = ext_elem.attrib.get('promotedto', None)
 238         try:
 239             ext.requires = ext_elem.attrib['requires'].split(',')
 240         except KeyError:
 241             ext.requires = []
 242
 243     def extra_deps(ext):
 244         if ext.type == 'instance':
 245             check = 'instance->enabled_extensions.{}'.format(ext.name[3:])
 246             if ext.promotedto is not None:
 247                 # the xml contains values like VK_VERSION_1_1, but we need to
 248                 # translate them to VK_API_VERSION_1_1 for the apiVersion check
 249                 api_ver = ext.promotedto.replace('VK_VER', 'VK_API_VER')
 250                 check = '({} || instance->apiVersion >= {})'.format(check, api_ver)
 251             return set([check])
 252
 253         deps = set()
 254         for dep in ext.requires:
 255             deps |= extra_deps(ext_name_map[dep])
 256
 257         return deps
 258
 259     for ext in EXTENSIONS:
 260         if ext.type == 'device':
 261             for dep in extra_deps(ext):
 262                 ext.enable += ' && ' + dep
 263
 264 # Mapping between extension name and the android version in which the extension
 265 # was whitelisted in Android CTS.
 266 allowed_android_version = {
 267     # Allowed Instance KHR Extensions
 268     "VK_KHR_surface": 26,
 269     "VK_KHR_display": 26,
 270     "VK_KHR_android_surface": 26,
 271     "VK_KHR_mir_surface": 26,
 272     "VK_KHR_wayland_surface": 26,
 273     "VK_KHR_win32_surface": 26,
 274     "VK_KHR_xcb_surface": 26,
 275     "VK_KHR_xlib_surface": 26,
 276     "VK_KHR_get_physical_device_properties2": 26,
 277     "VK_KHR_get_surface_capabilities2": 26,
 278     "VK_KHR_external_memory_capabilities": 28,
 279     "VK_KHR_external_semaphore_capabilities": 28,
 280     "VK_KHR_external_fence_capabilities": 28,
 281     "VK_KHR_device_group_creation": 28,
 282
 283     # Allowed Device KHR Extensions
 284     "VK_KHR_swapchain": 26,
 285     "VK_KHR_display_swapchain": 26,
 286     "VK_KHR_sampler_mirror_clamp_to_edge": 26,
 287     "VK_KHR_shader_draw_parameters": 26,
 288     "VK_KHR_maintenance1": 26,
 289     "VK_KHR_push_descriptor": 26,
 290     "VK_KHR_descriptor_update_template": 26,
 291     "VK_KHR_incremental_present": 26,
 292     "VK_KHR_shared_presentable_image": 26,
 293     "VK_KHR_storage_buffer_storage_class": 28,
 294     "VK_KHR_16bit_storage": 28,
 295     "VK_KHR_get_memory_requirements2": 28,
 296     "VK_KHR_external_memory": 28,
 297     "VK_KHR_external_memory_fd": 28,
 298     "VK_KHR_external_memory_win32": 28,
 299     "VK_KHR_external_semaphore": 28,
 300     "VK_KHR_external_semaphore_fd": 28,
 301     "VK_KHR_external_semaphore_win32": 28,
 302     "VK_KHR_external_fence": 28,
 303     "VK_KHR_external_fence_fd": 28,
 304     "VK_KHR_external_fence_win32": 28,
 305     "VK_KHR_win32_keyed_mutex": 28,
 306     "VK_KHR_dedicated_allocation": 28,
 307     "VK_KHR_variable_pointers": 28,
 308     "VK_KHR_relaxed_block_layout": 28,
 309     "VK_KHR_bind_memory2": 28,
 310     "VK_KHR_maintenance2": 28,
 311     "VK_KHR_image_format_list": 28,
 312     "VK_KHR_sampler_ycbcr_conversion": 28,
 313     "VK_KHR_device_group": 28,
 314     "VK_KHR_multiview": 28,
 315     "VK_KHR_maintenance3": 28,
 316
 317     "VK_GOOGLE_display_timing": 26,
 318     "VK_ANDROID_external_memory_android_hardware_buffer": 28,
 319 }
 320
 321 # Extensions with these prefixes are checked in Android CTS, and thus must be
 322 # whitelisted per the preceding dict.
 323 android_extension_whitelist_prefixes = (
 324     "VK_KHX",
 325     "VK_KHR",
 326     "VK_GOOGLE",
 327     "VK_ANDROID"
 328 )
 329
 330 def GetExtensionCondition(ext_name, condition):
 331     """ If |ext_name| is an extension that Android CTS cares about, prepend
 332         a condition to ensure that the extension is only enabled for Android
 333         versions in which the extension is whitelisted in CTS. """
 334     if not ext_name.startswith(android_extension_whitelist_prefixes):
 335         return condition
 336     allowed_version = allowed_android_version.get(ext_name, 9999)
 337     return "(!ANDROID || ANDROID_API_LEVEL >= %d) && (%s)" % (allowed_version,
 338                                                               condition)
 339
 340 _TEMPLATE_H = Template(COPYRIGHT + """
 341 #ifndef RADV_EXTENSIONS_H
 342 #define RADV_EXTENSIONS_H
 343
 344 enum {
 345    RADV_INSTANCE_EXTENSION_COUNT = ${len(instance_extensions)},
 346    RADV_DEVICE_EXTENSION_COUNT = ${len(device_extensions)},
 347 };
 348
 349 struct radv_instance_extension_table {
 350    union {
 351       bool extensions[RADV_INSTANCE_EXTENSION_COUNT];
 352       struct {
 353 %for ext in instance_extensions:
 354         bool ${ext.name[3:]};
 355 %endfor
 356       };
 357    };
 358 };
 359
 360 struct radv_device_extension_table {
 361    union {
 362       bool extensions[RADV_DEVICE_EXTENSION_COUNT];
 363       struct {
 364 %for ext in device_extensions:
 365         bool ${ext.name[3:]};
 366 %endfor
 367       };
 368    };
 369 };
 370
 371 extern const VkExtensionProperties radv_instance_extensions[RADV_INSTANCE_EXTENSION_COUNT];
 372 extern const VkExtensionProperties radv_device_extensions[RADV_DEVICE_EXTENSION_COUNT];
 373 extern const struct radv_instance_extension_table radv_supported_instance_extensions;
 374
 375
 376 struct radv_physical_device;
 377
 378 void radv_fill_device_extension_table(const struct radv_physical_device *device,
 379                                       struct radv_device_extension_table* table);
 380 #endif
 381 """)
 382
 383 _TEMPLATE_C = Template(COPYRIGHT + """
 384 #include "radv_private.h"
 385
 386 #include "vk_util.h"
 387
 388 /* Convert the VK_USE_PLATFORM_* defines to booleans */
 389 %for platform in ['ANDROID_KHR', 'WAYLAND_KHR', 'XCB_KHR', 'XLIB_KHR', 'DISPLAY_KHR', 'XLIB_XRANDR_EXT']:
 390 #ifdef VK_USE_PLATFORM_${platform}
 391 #   undef VK_USE_PLATFORM_${platform}
 392 #   define VK_USE_PLATFORM_${platform} true
 393 #else
 394 #   define VK_USE_PLATFORM_${platform} false
 395 #endif
 396 %endfor
 397
 398 /* And ANDROID too */
 399 #ifdef ANDROID
 400 #   undef ANDROID
 401 #   define ANDROID true
 402 #else
 403 #   define ANDROID false
 404 #   define ANDROID_API_LEVEL 0
 405 #endif
 406
 407 #define RADV_HAS_SURFACE (VK_USE_PLATFORM_WAYLAND_KHR || \\
 408                          VK_USE_PLATFORM_XCB_KHR || \\
 409                          VK_USE_PLATFORM_XLIB_KHR || \\
 410                          VK_USE_PLATFORM_DISPLAY_KHR)
 411
 412
 413 const VkExtensionProperties radv_instance_extensions[RADV_INSTANCE_EXTENSION_COUNT] = {
 414 %for ext in instance_extensions:
 415    {"${ext.name}", ${ext.ext_version}},
 416 %endfor
 417 };
 418
 419 const VkExtensionProperties radv_device_extensions[RADV_DEVICE_EXTENSION_COUNT] = {
 420 %for ext in device_extensions:
 421    {"${ext.name}", ${ext.ext_version}},
 422 %endfor
 423 };
 424
 425 const struct radv_instance_extension_table radv_supported_instance_extensions = {
 426 %for ext in instance_extensions:
 427    .${ext.name[3:]} = ${GetExtensionCondition(ext.name, ext.enable)},
 428 %endfor
 429 };
 430
 431 void radv_fill_device_extension_table(const struct radv_physical_device *device,
 432                                       struct radv_device_extension_table* table)
 433 {
 434    const struct radv_instance *instance = device->instance;
 435 %for ext in device_extensions:
 436    table->${ext.name[3:]} = ${GetExtensionCondition(ext.name, ext.enable)};
 437 %endfor
 438 }
 439
 440 VkResult radv_EnumerateInstanceVersion(
 441     uint32_t*                                   pApiVersion)
 442 {
 443     *pApiVersion = ${MAX_API_VERSION.c_vk_version()};
 444     return VK_SUCCESS;
 445 }
 446
 447 uint32_t
 448 radv_physical_device_api_version(struct radv_physical_device *dev)
 449 {
 450     uint32_t override = vk_get_version_override();
 451     uint32_t version = VK_MAKE_VERSION(1, 0, 68);
 452     if (dev->rad_info.has_syncobj_wait_for_submit)
 453         version = ${MAX_API_VERSION.c_vk_version()};
 454
 455     return override ? MIN2(override, version) : version;
 456 }
 457 """)
 458
 459 if __name__ == '__main__':
 460     parser = argparse.ArgumentParser()
 461     parser.add_argument('--out-c', help='Output C file.', required=True)
 462     parser.add_argument('--out-h', help='Output H file.', required=True)
 463     parser.add_argument('--xml',
 464                         help='Vulkan API XML file.',
 465                         required=True,
 466                         action='append',
 467                         dest='xml_files')
 468     args = parser.parse_args()
 469
 470     for filename in args.xml_files:
 471         _init_exts_from_xml(filename)
 472
 473     for ext in EXTENSIONS:
 474         assert ext.type == 'instance' or ext.type == 'device'
 475
 476     template_env = {
 477         'MAX_API_VERSION': MAX_API_VERSION,
 478         'instance_extensions': [e for e in EXTENSIONS if e.type == 'instance'],
 479         'device_extensions': [e for e in EXTENSIONS if e.type == 'device'],
 480         'GetExtensionCondition': GetExtensionCondition,
 481     }
 482
 483     with open(args.out_c, 'w') as f:
 484         f.write(_TEMPLATE_C.render(**template_env))
 485     with open(args.out_h, 'w') as f:
 486         f.write(_TEMPLATE_H.render(**template_env))