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#!/usr/bin/python3 -i
#
# Copyright (c) 2015-2021 The Khronos Group Inc.
# Copyright (c) 2015-2021 Valve Corporation
# Copyright (c) 2015-2021 LunarG, Inc.
# Copyright (c) 2015-2021 Google Inc.
#
# 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.
#
# Author: Mark Lobodzinski <mark@lunarg.com>
# Author: Charles Giessen <charles@lunarg.com>
import os
from base_generator import BaseGenerator
class DispatchTableHelperGenerator(BaseGenerator):
def __init__(self):
BaseGenerator.__init__(self)
def generate(self):
out = []
out.append(f'''#pragma once
// *** THIS FILE IS GENERATED - DO NOT EDIT ***
// See {os.path.basename(__file__)} for modifications
/*
* Copyright (c) 2015-2025 The Khronos Group Inc.
* Copyright (c) 2015-2025 Valve Corporation
* Copyright (c) 2015-2025 LunarG, Inc.
*
* 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.
*
* Author: Courtney Goeltzenleuchter <courtney@LunarG.com>
* Author: Jon Ashburn <jon@lunarg.com>
* Author: Mark Lobodzinski <mark@lunarg.com>
* Author: Charles Giessen <charles@lunarg.com>
*/
#include <vulkan/vulkan.h>
#include <vulkan/vk_layer.h>
#include <string.h>
#include "vk_layer_dispatch_table.h"
''')
self.OutputDispatchTableHelper(out, 'device')
out.append('\n\n')
self.OutputDispatchTableHelper(out, 'instance')
self.write(''.join(out))
# Create a dispatch table from the corresponding table_type and append it to out
def OutputDispatchTableHelper(self, out: list, table_type: str):
out.append(' // clang-format off\n')
if table_type == 'device':
out.append('static inline void layer_init_device_dispatch_table(VkDevice device, VkLayerDispatchTable *table, PFN_vkGetDeviceProcAddr gpa) {\n')
out.append(' memset(table, 0, sizeof(*table));\n')
out.append(' table->magic = DEVICE_DISP_TABLE_MAGIC_NUMBER;\n\n')
out.append(' // Device function pointers\n')
else:
out.append('static inline void layer_init_instance_dispatch_table(VkInstance instance, VkLayerInstanceDispatchTable *table, PFN_vkGetInstanceProcAddr gpa) {\n')
out.append(' memset(table, 0, sizeof(*table));\n\n')
out.append(' // Instance function pointers\n')
for command_name, command in self.vk.commands.items():
if (table_type == 'device' and not command.device) or (table_type == 'instance' and command.device):
continue
if command.protect is not None:
out.append( f'#if defined({command.protect})\n')
# If we're looking for the proc we are passing in, just point the table to it. This fixes the issue where
# a layer overrides the function name for the loader.
if (table_type == 'device' and command_name == 'vkGetDeviceProcAddr'):
out.append( ' table->GetDeviceProcAddr = gpa;\n')
elif (table_type != 'device' and command_name == 'vkGetInstanceProcAddr'):
out.append( ' table->GetInstanceProcAddr = gpa;\n')
else:
out.append( f' table->{command_name[2:]} = (PFN_{command_name})gpa({table_type}, "{command_name}");\n')
if command.protect is not None:
out.append( f'#endif // {command.protect}\n')
out.append(' // clang-format on\n')
out.append('}')
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