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#!/usr/bin/env python
# Copyright 2019 The Amber Authors. All rights reserved.
#
# 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 vk-wrappers.inc in the src/ directory.
from __future__ import print_function
import os.path
import re
import sys
import xml.etree.ElementTree as ET
from string import Template
def read_inc(file):
methods = []
pattern = re.compile(r"AMBER_VK_FUNC\((\w+)\)")
with open(file, 'r') as f:
for line in f:
match = pattern.search(line)
if match == None:
raise Exception("FAILED TO MATCH PATTERN");
methods.append(match.group(1))
return methods
def read_vk(file):
methods = {}
tree = ET.parse(file)
root = tree.getroot();
for command in root.iter("command"):
proto = command.find('proto')
if proto == None:
continue
return_type = proto.find('type').text
name = proto.find('name').text
param_list = []
for param in command.findall('param'):
param_val = "".join(param.itertext())
param_name = param.find('name').text
param_list.append({
'def': param_val,
'name': param_name
})
methods[name] = {
'return_type': return_type,
'name': name,
'params': param_list
}
return methods
def gen_wrappers(methods, xml):
content = ""
for method in methods:
data = xml[method]
if data == None:
raise Exception("Failed to find {}".format(method))
param_vals = []
param_names = []
for param in data['params']:
param_vals.append(param['def'])
param_names.append(param['name'])
signature = ', '.join(str(x) for x in param_vals)
arguments = ', '.join(str(x) for x in param_names)
return_type = data['return_type']
return_variable = ''
call_prefix = ''
if return_type != 'void':
return_variable = 'ret'
call_prefix = return_type + ' ' + return_variable + ' = '
template = Template(R'''{
PFN_${method} ptr = reinterpret_cast<PFN_${method}>(getInstanceProcAddr(instance_, "${method}"));
if (!ptr) {
return Result("Vulkan: Unable to load ${method} pointer");
}
if (delegate && delegate->LogGraphicsCalls()) {
ptrs_.${method} = [ptr, delegate](${signature}) -> ${return_type} {
delegate->Log("${method}");
uint64_t timestamp_start = 0;
if (delegate->LogGraphicsCallsTime()) {
timestamp_start = delegate->GetTimestampNs();
}
${call_prefix}ptr(${arguments});
if (delegate->LogGraphicsCallsTime()) {
uint64_t timestamp_end = delegate->GetTimestampNs();
uint64_t duration = timestamp_end - timestamp_start;
std::ostringstream out;
out << "time ";
// name of method on 40 characters
out << std::left << std::setw(40) << "${method}";
// duration in nanoseconds on 12 characters, right-aligned
out << std::right << std::setw(12) << duration;
out << " ns";
delegate->Log(out.str());
}
return ${return_variable};
};
} else {
ptrs_.${method} = [ptr](${signature}) -> ${return_type} {
${call_prefix}ptr(${arguments});
return ${return_variable};
};
}
}
''')
content += template.substitute(method=method,
signature=signature,
arguments=arguments,
return_type=return_type,
return_variable=return_variable,
call_prefix=call_prefix)
return content
def gen_headers(methods, xml):
content = ""
for method in methods:
data = xml[method]
if data == None:
raise Exception("Failed to find {}".format(method))
param_vals = []
param_names = []
for param in data['params']:
param_vals.append(param['def'])
param_names.append(param['name'])
content += "std::function<{}({})> {};\n".format(data['return_type'],
', '.join(str(x) for x in param_vals), method)
return content
def gen_direct(methods):
content = "";
template = Template(R'''
if (!(ptrs_.${method} = reinterpret_cast<PFN_${method}>(getInstanceProcAddr(instance_, "${method}")))) {
return Result("Vulkan: Unable to load ${method} pointer");
}
''')
for method in methods:
content += template.substitute(method=method)
return content
def gen_direct_headers(methods):
content = ""
for method in methods:
content += "PFN_{} {};\n".format(method, method);
return content
def main():
if len(sys.argv) != 3:
print('usage: {} <outdir> <src_dir>'.format(
sys.argv[0]))
sys.exit(1)
outdir = sys.argv[1]
srcdir = sys.argv[2]
vulkan_versions = ("1-0", "1-1")
for vulkan_version in vulkan_versions:
vkfile = os.path.join(srcdir, 'third_party', 'vulkan-headers', 'registry', 'vk.xml')
incfile = os.path.join(srcdir, 'src', 'vulkan', 'vk-funcs-%s.inc' % vulkan_version)
data = read_inc(incfile)
wrapper_content = ''
header_content = ''
if os.path.isfile(vkfile):
vk_data = read_vk(vkfile)
wrapper_content = gen_wrappers(data, vk_data)
header_content = gen_headers(data, vk_data)
else:
wrapper_content = gen_direct(data)
header_content = gen_direct_headers(data)
outfile = os.path.join(outdir, 'vk-wrappers-%s.inc' % vulkan_version)
if os.path.isfile(outfile):
with open(outfile, 'r') as f:
if wrapper_content == f.read():
return
with open(outfile, 'w') as f:
f.write(wrapper_content)
hdrfile = os.path.join(outdir, 'vk-wrappers-%s.h' % vulkan_version)
if os.path.isfile(hdrfile):
with open(hdrfile, 'r') as f:
if header_content == f.read():
return
with open(hdrfile, 'w') as f:
f.write(header_content)
if __name__ == '__main__':
main()
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