vulkan/scripts/driver_generator.py - third_party/android/platform/frameworks/native - Git at Google

 #!/usr/bin/env python3
 #
 # Copyright 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.

 """Generates the driver_gen.h and driver_gen.cpp.
 """

 import os
 import generator_common as gencom

 # Extensions intercepted at vulkan::driver level.
 _INTERCEPTED_EXTENSIONS = [
     'VK_ANDROID_native_buffer',
     'VK_EXT_debug_report',
     'VK_EXT_hdr_metadata',
     'VK_EXT_swapchain_colorspace',
     'VK_GOOGLE_display_timing',
     'VK_KHR_android_surface',
     'VK_KHR_get_surface_capabilities2',
     'VK_KHR_incremental_present',
     'VK_KHR_shared_presentable_image',
     'VK_KHR_surface',
     'VK_KHR_swapchain',
 ]

 # Extensions known to vulkan::driver level.
 _KNOWN_EXTENSIONS = _INTERCEPTED_EXTENSIONS + [
     'VK_ANDROID_external_memory_android_hardware_buffer',
     'VK_KHR_bind_memory2',
     'VK_KHR_get_physical_device_properties2',
 ]

 # Functions needed at vulkan::driver level.
 _NEEDED_COMMANDS = [
     # Create functions of dispatchable objects
     'vkCreateDevice',
     'vkGetDeviceQueue',
     'vkGetDeviceQueue2',
     'vkAllocateCommandBuffers',

     # Destroy functions of dispatchable objects
     'vkDestroyInstance',
     'vkDestroyDevice',

     # Enumeration of extensions
     'vkEnumerateDeviceExtensionProperties',

     # We cache physical devices in loader.cpp
     'vkEnumeratePhysicalDevices',
     'vkEnumeratePhysicalDeviceGroups',

     'vkGetInstanceProcAddr',
     'vkGetDeviceProcAddr',

     'vkQueueSubmit',

     # VK_KHR_swapchain->VK_ANDROID_native_buffer translation
     'vkCreateImage',
     'vkDestroyImage',

     'vkGetPhysicalDeviceProperties',
     'vkGetPhysicalDeviceProperties2',
     'vkGetPhysicalDeviceProperties2KHR',

     # VK_KHR_swapchain v69 requirement
     'vkBindImageMemory2',
     'vkBindImageMemory2KHR',
 ]

 # Functions intercepted at vulkan::driver level.
 _INTERCEPTED_COMMANDS = [
     # Create functions of dispatchable objects
     'vkCreateInstance',
     'vkCreateDevice',
     'vkEnumeratePhysicalDevices',
     'vkEnumeratePhysicalDeviceGroups',
     'vkGetDeviceQueue',
     'vkGetDeviceQueue2',
     'vkAllocateCommandBuffers',

     # Destroy functions of dispatchable objects
     'vkDestroyInstance',
     'vkDestroyDevice',

     # Enumeration of extensions
     'vkEnumerateInstanceExtensionProperties',
     'vkEnumerateDeviceExtensionProperties',

     'vkGetInstanceProcAddr',
     'vkGetDeviceProcAddr',

     'vkQueueSubmit',

     # VK_KHR_swapchain v69 requirement
     'vkBindImageMemory2',
     'vkBindImageMemory2KHR',
 ]


 def _is_driver_table_entry(cmd):
   """Returns true if a function is needed by vulkan::driver.

   Args:
     cmd: Vulkan function name.
   """
   if gencom.is_function_supported(cmd):
     if cmd in _NEEDED_COMMANDS:
       return True
     if cmd in gencom.extension_dict:
       if (gencom.extension_dict[cmd] == 'VK_ANDROID_native_buffer' or
           gencom.extension_dict[cmd] == 'VK_EXT_debug_report'):
         return True
   return False


 def _is_instance_driver_table_entry(cmd):
   """Returns true if a instance-dispatched function is needed by vulkan::driver.

   Args:
     cmd: Vulkan function name.
   """
   return (_is_driver_table_entry(cmd) and
           gencom.is_instance_dispatched(cmd))


 def _is_device_driver_table_entry(cmd):
   """Returns true if a device-dispatched function is needed by vulkan::driver.

   Args:
     cmd: Vulkan function name.
   """
   return (_is_driver_table_entry(cmd) and
           gencom.is_device_dispatched(cmd))


 def gen_h():
   """Generates the driver_gen.h file.
   """
   genfile = os.path.join(os.path.dirname(__file__),
                          '..', 'libvulkan', 'driver_gen.h')

   with open(genfile, 'w') as f:
     f.write(gencom.copyright_and_warning(2016))

     f.write("""\
 #ifndef LIBVULKAN_DRIVER_GEN_H
 #define LIBVULKAN_DRIVER_GEN_H

 #include <vulkan/vk_android_native_buffer.h>
 #include <vulkan/vulkan.h>

 #include <bitset>

 namespace vulkan {
 namespace driver {

 struct ProcHook {
     enum Type {
         GLOBAL,
         INSTANCE,
         DEVICE,
     };
     enum Extension {\n""")

     for ext in _KNOWN_EXTENSIONS:
       f.write(gencom.indent(2) + gencom.base_ext_name(ext) + ',\n')

     f.write('\n')
     for version in gencom.version_code_list:
       f.write(gencom.indent(2) + 'EXTENSION_CORE_' + version + ',\n')

     # EXTENSION_COUNT must be the next enum after the highest API version.
     f.write("""\
         EXTENSION_COUNT,
         EXTENSION_UNKNOWN,
     };

     const char* name;
     Type type;
     Extension extension;

     PFN_vkVoidFunction proc;
     PFN_vkVoidFunction checked_proc;  // always nullptr for non-device hooks
 };

 struct InstanceDriverTable {
     // clang-format off\n""")

     for cmd in gencom.command_list:
       if _is_instance_driver_table_entry(cmd):
         f.write(gencom.indent(1) + 'PFN_' + cmd + ' ' +
                 gencom.base_name(cmd) + ';\n')

     f.write("""\
     // clang-format on
 };

 struct DeviceDriverTable {
     // clang-format off\n""")

     for cmd in gencom.command_list:
       if _is_device_driver_table_entry(cmd):
         f.write(gencom.indent(1) + 'PFN_' + cmd + ' ' +
                 gencom.base_name(cmd) + ';\n')

     f.write("""\
     // clang-format on
 };

 const ProcHook* GetProcHook(const char* name);
 ProcHook::Extension GetProcHookExtension(const char* name);

 bool InitDriverTable(VkInstance instance,
                      PFN_vkGetInstanceProcAddr get_proc,
                      const std::bitset<ProcHook::EXTENSION_COUNT>& extensions);
 bool InitDriverTable(VkDevice dev,
                      PFN_vkGetDeviceProcAddr get_proc,
                      const std::bitset<ProcHook::EXTENSION_COUNT>& extensions);

 }  // namespace driver
 }  // namespace vulkan

 #endif  // LIBVULKAN_DRIVER_TABLE_H\n""")

     f.close()
   gencom.run_clang_format(genfile)


 def _is_intercepted(cmd):
   """Returns true if a function is intercepted by vulkan::driver.

   Args:
     cmd: Vulkan function name.
   """
   if gencom.is_function_supported(cmd):
     if cmd in _INTERCEPTED_COMMANDS:
       return True

     if cmd in gencom.extension_dict:
       return gencom.extension_dict[cmd] in _INTERCEPTED_EXTENSIONS
   return False


 def _get_proc_hook_enum(cmd):
   """Returns the ProcHook enumeration for the corresponding core function.

   Args:
     cmd: Vulkan function name.
   """
   assert cmd in gencom.version_dict
   for version in gencom.version_code_list:
     if gencom.version_dict[cmd] == 'VK_VERSION_' + version:
       return 'ProcHook::EXTENSION_CORE_' + version


 def _need_proc_hook_stub(cmd):
   """Returns true if a function needs a ProcHook stub.

   Args:
     cmd: Vulkan function name.
   """
   if _is_intercepted(cmd) and gencom.is_device_dispatched(cmd):
     if cmd in gencom.extension_dict:
       if not gencom.is_extension_internal(gencom.extension_dict[cmd]):
         return True
     elif gencom.version_dict[cmd] != 'VK_VERSION_1_0':
       return True
   return False


 def _define_proc_hook_stub(cmd, f):
   """Emits a stub for ProcHook::checked_proc.

   Args:
     cmd: Vulkan function name.
     f: Output file handle.
   """
   if _need_proc_hook_stub(cmd):
     return_type = gencom.return_type_dict[cmd]

     ext_name = ''
     ext_hook = ''
     if cmd in gencom.extension_dict:
       ext_name = gencom.extension_dict[cmd]
       ext_hook = 'ProcHook::' + gencom.base_ext_name(ext_name)
     else:
       ext_name = gencom.version_dict[cmd]
       ext_hook = _get_proc_hook_enum(cmd)

     handle = gencom.param_dict[cmd][0][1]
     param_types = ', '.join([''.join(i) for i in gencom.param_dict[cmd]])
     param_names = ', '.join([''.join(i[1]) for i in gencom.param_dict[cmd]])

     f.write('VKAPI_ATTR ' + return_type + ' checked' + gencom.base_name(cmd) +
             '(' + param_types + ') {\n')
     f.write(gencom.indent(1) + 'if (GetData(' + handle + ').hook_extensions[' +
             ext_hook + ']) {\n')

     f.write(gencom.indent(2))
     if gencom.return_type_dict[cmd] != 'void':
       f.write('return ')
     f.write(gencom.base_name(cmd) + '(' + param_names + ');\n')

     f.write(gencom.indent(1) + '} else {\n')
     f.write(gencom.indent(2) + 'Logger(' + handle + ').Err(' + handle + ', \"' +
             ext_name + ' not enabled. ' + cmd + ' not executed.\");\n')
     if gencom.return_type_dict[cmd] != 'void':
       f.write(gencom.indent(2) + 'return VK_SUCCESS;\n')
     f.write(gencom.indent(1) + '}\n}\n\n')


 def _define_global_proc_hook(cmd, f):
   """Emits definition of a global ProcHook.

   Args:
     cmd: Vulkan function name.
     f: Output file handle.
   """
   assert cmd not in gencom.extension_dict

   f.write(gencom.indent(1) + '{\n')
   f.write(gencom.indent(2) + '\"' + cmd + '\",\n')
   f.write(gencom.indent(2) + 'ProcHook::GLOBAL,\n')
   f.write(gencom.indent(2) + _get_proc_hook_enum(cmd) + ',\n')
   f.write(gencom.indent(2) + 'reinterpret_cast<PFN_vkVoidFunction>(' +
           gencom.base_name(cmd) + '),\n')
   f.write(gencom.indent(2) + 'nullptr,\n')
   f.write(gencom.indent(1) + '},\n')


 def _define_instance_proc_hook(cmd, f):
   """Emits definition of a instance ProcHook.

   Args:
     cmd: Vulkan function name.
     f: Output file handle.
   """
   f.write(gencom.indent(1) + '{\n')
   f.write(gencom.indent(2) + '\"' + cmd + '\",\n')
   f.write(gencom.indent(2) + 'ProcHook::INSTANCE,\n')

   if cmd in gencom.extension_dict:
     ext_name = gencom.extension_dict[cmd]
     f.write(gencom.indent(2) + 'ProcHook::' +
             gencom.base_ext_name(ext_name) + ',\n')

     if gencom.is_extension_internal(ext_name):
       f.write("""\
         nullptr,
         nullptr,\n""")
     else:
       f.write("""\
         reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
         nullptr,\n""")
   else:
     f.write(gencom.indent(2) + _get_proc_hook_enum(cmd) + ',\n')
     f.write("""\
         reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
         nullptr,\n""")

   f.write(gencom.indent(1) + '},\n')


 def _define_device_proc_hook(cmd, f):
   """Emits definition of a device ProcHook.

   Args:
     cmd: Vulkan function name.
     f: Output file handle.
   """
   f.write(gencom.indent(1) + '{\n')
   f.write(gencom.indent(2) + '\"' + cmd + '\",\n')
   f.write(gencom.indent(2) + 'ProcHook::DEVICE,\n')

   if (cmd in gencom.extension_dict or
       gencom.version_dict[cmd] != 'VK_VERSION_1_0'):
     ext_name = ''
     ext_hook = ''
     if cmd in gencom.extension_dict:
       ext_name = gencom.extension_dict[cmd]
       ext_hook = 'ProcHook::' + gencom.base_ext_name(ext_name)
     else:
       ext_name = gencom.version_dict[cmd]
       ext_hook = _get_proc_hook_enum(cmd)
     f.write(gencom.indent(2) + ext_hook + ',\n')

     if gencom.is_extension_internal(ext_name):
       f.write("""\
         nullptr,
         nullptr,\n""")
     else:
       f.write("""\
         reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
         reinterpret_cast<PFN_vkVoidFunction>(checked""" +
               gencom.base_name(cmd) + '),\n')

   else:
     f.write(gencom.indent(2) + _get_proc_hook_enum(cmd) + ',\n')
     f.write("""\
         reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
         nullptr,\n""")

   f.write(gencom.indent(1) + '},\n')


 def gen_cpp():
   """Generates the driver_gen.cpp file.
   """
   genfile = os.path.join(os.path.dirname(__file__),
                          '..', 'libvulkan', 'driver_gen.cpp')

   with open(genfile, 'w') as f:
     f.write(gencom.copyright_and_warning(2016))
     f.write("""\
 #include <log/log.h>
 #include <string.h>

 #include <algorithm>

 #include "driver.h"

 namespace vulkan {
 namespace driver {

 namespace {

 // clang-format off\n\n""")

     for cmd in gencom.command_list:
       _define_proc_hook_stub(cmd, f)

     f.write("""\
 // clang-format on

 const ProcHook g_proc_hooks[] = {
     // clang-format off\n""")

     sorted_command_list = sorted(gencom.command_list)
     for cmd in sorted_command_list:
       if _is_intercepted(cmd):
         if gencom.is_globally_dispatched(cmd):
           _define_global_proc_hook(cmd, f)
         elif gencom.is_instance_dispatched(cmd):
           _define_instance_proc_hook(cmd, f)
         elif gencom.is_device_dispatched(cmd):
           _define_device_proc_hook(cmd, f)

     f.write("""\
     // clang-format on
 };

 }  // namespace

 const ProcHook* GetProcHook(const char* name) {
     const auto& begin = g_proc_hooks;
     const auto& end =
         g_proc_hooks + sizeof(g_proc_hooks) / sizeof(g_proc_hooks[0]);
     const auto hook = std::lower_bound(
         begin, end, name,
         [](const ProcHook& e, const char* n) { return strcmp(e.name, n) < 0; });
     return (hook < end && strcmp(hook->name, name) == 0) ? hook : nullptr;
 }

 ProcHook::Extension GetProcHookExtension(const char* name) {
     // clang-format off\n""")

     for ext in _KNOWN_EXTENSIONS:
       f.write(gencom.indent(1) + 'if (strcmp(name, \"' + ext +
               '\") == 0) return ProcHook::' + gencom.base_ext_name(ext) + ';\n')

     f.write("""\
     // clang-format on
     return ProcHook::EXTENSION_UNKNOWN;
 }

 #define UNLIKELY(expr) __builtin_expect((expr), 0)

 #define INIT_PROC(required, obj, proc)                                 \\
     do {                                                               \\
         data.driver.proc =                                             \\
             reinterpret_cast<PFN_vk##proc>(get_proc(obj, "vk" #proc)); \\
         if (UNLIKELY(required && !data.driver.proc)) {                 \\
             ALOGE("missing " #obj " proc: vk" #proc);                  \\
             success = false;                                           \\
         }                                                              \\
     } while (0)

 #define INIT_PROC_EXT(ext, required, obj, proc) \\
     do {                                        \\
         if (extensions[ProcHook::ext])          \\
             INIT_PROC(required, obj, proc);     \\
     } while (0)

 bool InitDriverTable(VkInstance instance,
                      PFN_vkGetInstanceProcAddr get_proc,
                      const std::bitset<ProcHook::EXTENSION_COUNT>& extensions) {
     auto& data = GetData(instance);
     bool success = true;

     // clang-format off\n""")

     for cmd in gencom.command_list:
       if _is_instance_driver_table_entry(cmd):
         gencom.init_proc(cmd, f)

     f.write("""\
     // clang-format on

     return success;
 }

 bool InitDriverTable(VkDevice dev,
                      PFN_vkGetDeviceProcAddr get_proc,
                      const std::bitset<ProcHook::EXTENSION_COUNT>& extensions) {
     auto& data = GetData(dev);
     bool success = true;

     // clang-format off\n""")

     for cmd in gencom.command_list:
       if _is_device_driver_table_entry(cmd):
         gencom.init_proc(cmd, f)

     f.write("""\
     // clang-format on

     return success;
 }

 }  // namespace driver
 }  // namespace vulkan\n""")

     f.close()
   gencom.run_clang_format(genfile)
	#!/usr/bin/env python3
	#
	# Copyright 2019 The Android Open Source Project
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	"""Generates the driver_gen.h and driver_gen.cpp.
	"""

	import os
	import generator_common as gencom

	# Extensions intercepted at vulkan::driver level.
	_INTERCEPTED_EXTENSIONS = [
	'VK_ANDROID_native_buffer',
	'VK_EXT_debug_report',
	'VK_EXT_hdr_metadata',
	'VK_EXT_swapchain_colorspace',
	'VK_GOOGLE_display_timing',
	'VK_KHR_android_surface',
	'VK_KHR_get_surface_capabilities2',
	'VK_KHR_incremental_present',
	'VK_KHR_shared_presentable_image',
	'VK_KHR_surface',
	'VK_KHR_swapchain',
	]

	# Extensions known to vulkan::driver level.
	_KNOWN_EXTENSIONS = _INTERCEPTED_EXTENSIONS + [
	'VK_ANDROID_external_memory_android_hardware_buffer',
	'VK_KHR_bind_memory2',
	'VK_KHR_get_physical_device_properties2',
	]

	# Functions needed at vulkan::driver level.
	_NEEDED_COMMANDS = [
	# Create functions of dispatchable objects
	'vkCreateDevice',
	'vkGetDeviceQueue',
	'vkGetDeviceQueue2',
	'vkAllocateCommandBuffers',

	# Destroy functions of dispatchable objects
	'vkDestroyInstance',
	'vkDestroyDevice',

	# Enumeration of extensions
	'vkEnumerateDeviceExtensionProperties',

	# We cache physical devices in loader.cpp
	'vkEnumeratePhysicalDevices',
	'vkEnumeratePhysicalDeviceGroups',

	'vkGetInstanceProcAddr',
	'vkGetDeviceProcAddr',

	'vkQueueSubmit',

	# VK_KHR_swapchain->VK_ANDROID_native_buffer translation
	'vkCreateImage',
	'vkDestroyImage',

	'vkGetPhysicalDeviceProperties',
	'vkGetPhysicalDeviceProperties2',
	'vkGetPhysicalDeviceProperties2KHR',

	# VK_KHR_swapchain v69 requirement
	'vkBindImageMemory2',
	'vkBindImageMemory2KHR',
	]

	# Functions intercepted at vulkan::driver level.
	_INTERCEPTED_COMMANDS = [
	# Create functions of dispatchable objects
	'vkCreateInstance',
	'vkCreateDevice',
	'vkEnumeratePhysicalDevices',
	'vkEnumeratePhysicalDeviceGroups',
	'vkGetDeviceQueue',
	'vkGetDeviceQueue2',
	'vkAllocateCommandBuffers',

	# Destroy functions of dispatchable objects
	'vkDestroyInstance',
	'vkDestroyDevice',

	# Enumeration of extensions
	'vkEnumerateInstanceExtensionProperties',
	'vkEnumerateDeviceExtensionProperties',

	'vkGetInstanceProcAddr',
	'vkGetDeviceProcAddr',

	'vkQueueSubmit',

	# VK_KHR_swapchain v69 requirement
	'vkBindImageMemory2',
	'vkBindImageMemory2KHR',
	]


	def _is_driver_table_entry(cmd):
	"""Returns true if a function is needed by vulkan::driver.

	Args:
	cmd: Vulkan function name.
	"""
	if gencom.is_function_supported(cmd):
	if cmd in _NEEDED_COMMANDS:
	return True
	if cmd in gencom.extension_dict:
	if (gencom.extension_dict[cmd] == 'VK_ANDROID_native_buffer' or
	gencom.extension_dict[cmd] == 'VK_EXT_debug_report'):
	return True
	return False


	def _is_instance_driver_table_entry(cmd):
	"""Returns true if a instance-dispatched function is needed by vulkan::driver.

	Args:
	cmd: Vulkan function name.
	"""
	return (_is_driver_table_entry(cmd) and
	gencom.is_instance_dispatched(cmd))


	def _is_device_driver_table_entry(cmd):
	"""Returns true if a device-dispatched function is needed by vulkan::driver.

	Args:
	cmd: Vulkan function name.
	"""
	return (_is_driver_table_entry(cmd) and
	gencom.is_device_dispatched(cmd))


	def gen_h():
	"""Generates the driver_gen.h file.
	"""
	genfile = os.path.join(os.path.dirname(__file__),
	'..', 'libvulkan', 'driver_gen.h')

	with open(genfile, 'w') as f:
	f.write(gencom.copyright_and_warning(2016))

	f.write("""\
	#ifndef LIBVULKAN_DRIVER_GEN_H
	#define LIBVULKAN_DRIVER_GEN_H

	#include <vulkan/vk_android_native_buffer.h>
	#include <vulkan/vulkan.h>

	#include <bitset>

	namespace vulkan {
	namespace driver {

	struct ProcHook {
	enum Type {
	GLOBAL,
	INSTANCE,
	DEVICE,
	};
	enum Extension {\n""")

	for ext in _KNOWN_EXTENSIONS:
	f.write(gencom.indent(2) + gencom.base_ext_name(ext) + ',\n')

	f.write('\n')
	for version in gencom.version_code_list:
	f.write(gencom.indent(2) + 'EXTENSION_CORE_' + version + ',\n')

	# EXTENSION_COUNT must be the next enum after the highest API version.
	f.write("""\
	EXTENSION_COUNT,
	EXTENSION_UNKNOWN,
	};

	const char* name;
	Type type;
	Extension extension;

	PFN_vkVoidFunction proc;
	PFN_vkVoidFunction checked_proc; // always nullptr for non-device hooks
	};

	struct InstanceDriverTable {
	// clang-format off\n""")

	for cmd in gencom.command_list:
	if _is_instance_driver_table_entry(cmd):
	f.write(gencom.indent(1) + 'PFN_' + cmd + ' ' +
	gencom.base_name(cmd) + ';\n')

	f.write("""\
	// clang-format on
	};

	struct DeviceDriverTable {
	// clang-format off\n""")

	for cmd in gencom.command_list:
	if _is_device_driver_table_entry(cmd):
	f.write(gencom.indent(1) + 'PFN_' + cmd + ' ' +
	gencom.base_name(cmd) + ';\n')

	f.write("""\
	// clang-format on
	};

	const ProcHook* GetProcHook(const char* name);
	ProcHook::Extension GetProcHookExtension(const char* name);

	bool InitDriverTable(VkInstance instance,
	PFN_vkGetInstanceProcAddr get_proc,
	const std::bitset<ProcHook::EXTENSION_COUNT>& extensions);
	bool InitDriverTable(VkDevice dev,
	PFN_vkGetDeviceProcAddr get_proc,
	const std::bitset<ProcHook::EXTENSION_COUNT>& extensions);

	} // namespace driver
	} // namespace vulkan

	#endif // LIBVULKAN_DRIVER_TABLE_H\n""")

	f.close()
	gencom.run_clang_format(genfile)


	def _is_intercepted(cmd):
	"""Returns true if a function is intercepted by vulkan::driver.

	Args:
	cmd: Vulkan function name.
	"""
	if gencom.is_function_supported(cmd):
	if cmd in _INTERCEPTED_COMMANDS:
	return True

	if cmd in gencom.extension_dict:
	return gencom.extension_dict[cmd] in _INTERCEPTED_EXTENSIONS
	return False


	def _get_proc_hook_enum(cmd):
	"""Returns the ProcHook enumeration for the corresponding core function.

	Args:
	cmd: Vulkan function name.
	"""
	assert cmd in gencom.version_dict
	for version in gencom.version_code_list:
	if gencom.version_dict[cmd] == 'VK_VERSION_' + version:
	return 'ProcHook::EXTENSION_CORE_' + version


	def _need_proc_hook_stub(cmd):
	"""Returns true if a function needs a ProcHook stub.

	Args:
	cmd: Vulkan function name.
	"""
	if _is_intercepted(cmd) and gencom.is_device_dispatched(cmd):
	if cmd in gencom.extension_dict:
	if not gencom.is_extension_internal(gencom.extension_dict[cmd]):
	return True
	elif gencom.version_dict[cmd] != 'VK_VERSION_1_0':
	return True
	return False


	def _define_proc_hook_stub(cmd, f):
	"""Emits a stub for ProcHook::checked_proc.

	Args:
	cmd: Vulkan function name.
	f: Output file handle.
	"""
	if _need_proc_hook_stub(cmd):
	return_type = gencom.return_type_dict[cmd]

	ext_name = ''
	ext_hook = ''
	if cmd in gencom.extension_dict:
	ext_name = gencom.extension_dict[cmd]
	ext_hook = 'ProcHook::' + gencom.base_ext_name(ext_name)
	else:
	ext_name = gencom.version_dict[cmd]
	ext_hook = _get_proc_hook_enum(cmd)

	handle = gencom.param_dict[cmd][0][1]
	param_types = ', '.join([''.join(i) for i in gencom.param_dict[cmd]])
	param_names = ', '.join([''.join(i[1]) for i in gencom.param_dict[cmd]])

	f.write('VKAPI_ATTR ' + return_type + ' checked' + gencom.base_name(cmd) +
	'(' + param_types + ') {\n')
	f.write(gencom.indent(1) + 'if (GetData(' + handle + ').hook_extensions[' +
	ext_hook + ']) {\n')

	f.write(gencom.indent(2))
	if gencom.return_type_dict[cmd] != 'void':
	f.write('return ')
	f.write(gencom.base_name(cmd) + '(' + param_names + ');\n')

	f.write(gencom.indent(1) + '} else {\n')
	f.write(gencom.indent(2) + 'Logger(' + handle + ').Err(' + handle + ', \"' +
	ext_name + ' not enabled. ' + cmd + ' not executed.\");\n')
	if gencom.return_type_dict[cmd] != 'void':
	f.write(gencom.indent(2) + 'return VK_SUCCESS;\n')
	f.write(gencom.indent(1) + '}\n}\n\n')


	def _define_global_proc_hook(cmd, f):
	"""Emits definition of a global ProcHook.

	Args:
	cmd: Vulkan function name.
	f: Output file handle.
	"""
	assert cmd not in gencom.extension_dict

	f.write(gencom.indent(1) + '{\n')
	f.write(gencom.indent(2) + '\"' + cmd + '\",\n')
	f.write(gencom.indent(2) + 'ProcHook::GLOBAL,\n')
	f.write(gencom.indent(2) + _get_proc_hook_enum(cmd) + ',\n')
	f.write(gencom.indent(2) + 'reinterpret_cast<PFN_vkVoidFunction>(' +
	gencom.base_name(cmd) + '),\n')
	f.write(gencom.indent(2) + 'nullptr,\n')
	f.write(gencom.indent(1) + '},\n')


	def _define_instance_proc_hook(cmd, f):
	"""Emits definition of a instance ProcHook.

	Args:
	cmd: Vulkan function name.
	f: Output file handle.
	"""
	f.write(gencom.indent(1) + '{\n')
	f.write(gencom.indent(2) + '\"' + cmd + '\",\n')
	f.write(gencom.indent(2) + 'ProcHook::INSTANCE,\n')

	if cmd in gencom.extension_dict:
	ext_name = gencom.extension_dict[cmd]
	f.write(gencom.indent(2) + 'ProcHook::' +
	gencom.base_ext_name(ext_name) + ',\n')

	if gencom.is_extension_internal(ext_name):
	f.write("""\
	nullptr,
	nullptr,\n""")
	else:
	f.write("""\
	reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
	nullptr,\n""")
	else:
	f.write(gencom.indent(2) + _get_proc_hook_enum(cmd) + ',\n')
	f.write("""\
	reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
	nullptr,\n""")

	f.write(gencom.indent(1) + '},\n')


	def _define_device_proc_hook(cmd, f):
	"""Emits definition of a device ProcHook.

	Args:
	cmd: Vulkan function name.
	f: Output file handle.
	"""
	f.write(gencom.indent(1) + '{\n')
	f.write(gencom.indent(2) + '\"' + cmd + '\",\n')
	f.write(gencom.indent(2) + 'ProcHook::DEVICE,\n')

	if (cmd in gencom.extension_dict or
	gencom.version_dict[cmd] != 'VK_VERSION_1_0'):
	ext_name = ''
	ext_hook = ''
	if cmd in gencom.extension_dict:
	ext_name = gencom.extension_dict[cmd]
	ext_hook = 'ProcHook::' + gencom.base_ext_name(ext_name)
	else:
	ext_name = gencom.version_dict[cmd]
	ext_hook = _get_proc_hook_enum(cmd)
	f.write(gencom.indent(2) + ext_hook + ',\n')

	if gencom.is_extension_internal(ext_name):
	f.write("""\
	nullptr,
	nullptr,\n""")
	else:
	f.write("""\
	reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
	reinterpret_cast<PFN_vkVoidFunction>(checked""" +
	gencom.base_name(cmd) + '),\n')

	else:
	f.write(gencom.indent(2) + _get_proc_hook_enum(cmd) + ',\n')
	f.write("""\
	reinterpret_cast<PFN_vkVoidFunction>(""" + gencom.base_name(cmd) + """),
	nullptr,\n""")

	f.write(gencom.indent(1) + '},\n')


	def gen_cpp():
	"""Generates the driver_gen.cpp file.
	"""
	genfile = os.path.join(os.path.dirname(__file__),
	'..', 'libvulkan', 'driver_gen.cpp')

	with open(genfile, 'w') as f:
	f.write(gencom.copyright_and_warning(2016))
	f.write("""\
	#include <log/log.h>
	#include <string.h>

	#include <algorithm>

	#include "driver.h"

	namespace vulkan {
	namespace driver {

	namespace {

	// clang-format off\n\n""")

	for cmd in gencom.command_list:
	_define_proc_hook_stub(cmd, f)

	f.write("""\
	// clang-format on

	const ProcHook g_proc_hooks[] = {
	// clang-format off\n""")

	sorted_command_list = sorted(gencom.command_list)
	for cmd in sorted_command_list:
	if _is_intercepted(cmd):
	if gencom.is_globally_dispatched(cmd):
	_define_global_proc_hook(cmd, f)
	elif gencom.is_instance_dispatched(cmd):
	_define_instance_proc_hook(cmd, f)
	elif gencom.is_device_dispatched(cmd):
	_define_device_proc_hook(cmd, f)

	f.write("""\
	// clang-format on
	};

	} // namespace

	const ProcHook* GetProcHook(const char* name) {
	const auto& begin = g_proc_hooks;
	const auto& end =
	g_proc_hooks + sizeof(g_proc_hooks) / sizeof(g_proc_hooks[0]);
	const auto hook = std::lower_bound(
	begin, end, name,
	[](const ProcHook& e, const char* n) { return strcmp(e.name, n) < 0; });
	return (hook < end && strcmp(hook->name, name) == 0) ? hook : nullptr;
	}

	ProcHook::Extension GetProcHookExtension(const char* name) {
	// clang-format off\n""")

	for ext in _KNOWN_EXTENSIONS:
	f.write(gencom.indent(1) + 'if (strcmp(name, \"' + ext +
	'\") == 0) return ProcHook::' + gencom.base_ext_name(ext) + ';\n')

	f.write("""\
	// clang-format on
	return ProcHook::EXTENSION_UNKNOWN;
	}

	#define UNLIKELY(expr) __builtin_expect((expr), 0)

	#define INIT_PROC(required, obj, proc) \\
	do { \\
	data.driver.proc = \\
	reinterpret_cast<PFN_vk##proc>(get_proc(obj, "vk" #proc)); \\
	if (UNLIKELY(required && !data.driver.proc)) { \\
	ALOGE("missing " #obj " proc: vk" #proc); \\
	success = false; \\
	} \\
	} while (0)

	#define INIT_PROC_EXT(ext, required, obj, proc) \\
	do { \\
	if (extensions[ProcHook::ext]) \\
	INIT_PROC(required, obj, proc); \\
	} while (0)

	bool InitDriverTable(VkInstance instance,
	PFN_vkGetInstanceProcAddr get_proc,
	const std::bitset<ProcHook::EXTENSION_COUNT>& extensions) {
	auto& data = GetData(instance);
	bool success = true;

	// clang-format off\n""")

	for cmd in gencom.command_list:
	if _is_instance_driver_table_entry(cmd):
	gencom.init_proc(cmd, f)

	f.write("""\
	// clang-format on

	return success;
	}

	bool InitDriverTable(VkDevice dev,
	PFN_vkGetDeviceProcAddr get_proc,
	const std::bitset<ProcHook::EXTENSION_COUNT>& extensions) {
	auto& data = GetData(dev);
	bool success = true;

	// clang-format off\n""")

	for cmd in gencom.command_list:
	if _is_device_driver_table_entry(cmd):
	gencom.init_proc(cmd, f)

	f.write("""\
	// clang-format on

	return success;
	}

	} // namespace driver
	} // namespace vulkan\n""")

	f.close()
	gencom.run_clang_format(genfile)