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#!/usr/bin/env python3
import argparse
import array
import glob
import os
import re
import sys
import subprocess
from torchgen.code_template import CodeTemplate
H_NAME = "spv.h"
CPP_NAME = "spv.cpp"
DEFAULT_ENV = {"precision": "highp", "format": "rgba32f"}
def getName(filePath):
return os.path.basename(filePath).replace("/", "_").replace(".", "_")
def isDescriptorLine(lineStr):
descriptorLineId = r"^layout\(set"
return re.search(descriptorLineId, lineStr)
typeIdMapping = {
r"image[123]D\b": "VK_DESCRIPTOR_TYPE_STORAGE_IMAGE",
r"sampler[123]D\b": "VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER",
r"\bbuffer\b": "VK_DESCRIPTOR_TYPE_STORAGE_BUFFER",
r"\buniform\b.*\bBlock\b": "VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER",
}
def determineDescriptorType(lineStr):
for identifier, typeNum in typeIdMapping.items():
if re.search(identifier, lineStr):
return typeNum
raise Exception("Could not identify descriptor type of line: {}".format(lineStr))
def getLayout(srcFilePath):
layout = []
with open(srcFilePath, 'r') as srcFile:
for line in srcFile:
if isDescriptorLine(line):
layout.append(determineDescriptorType(line))
return layout
def genCppH(hFilePath, cppFilePath, srcDirPath, glslcPath, tmpDirPath, env):
print("hFilePath:{} cppFilePath:{} srcDirPath:{} glslcPath:{} tmpDirPath:{}".format(
hFilePath, cppFilePath, srcDirPath, glslcPath, tmpDirPath))
vexs = glob.glob(os.path.join(srcDirPath, '**', '*.glsl'), recursive=True)
templateSrcPaths = []
for f in vexs:
if len(f) > 1:
templateSrcPaths.append(f)
templateSrcPaths.sort()
print("templateSrcPaths:{}".format(templateSrcPaths))
spvPaths = {}
for templateSrcPath in templateSrcPaths:
print("templateSrcPath {}".format(templateSrcPath))
name = getName(templateSrcPath).replace("_glsl", "")
print("name {}".format(name))
codeTemplate = CodeTemplate.from_file(templateSrcPath)
srcPath = tmpDirPath + "/" + name + ".glsl"
content = codeTemplate.substitute(env)
with open(srcPath, 'w') as f:
f.write(content)
spvPath = tmpDirPath + "/" + name + ".spv"
print("spvPath {}".format(spvPath))
cmd = [
glslcPath, "-fshader-stage=compute",
srcPath, "-o", spvPath,
"--target-env=vulkan1.0",
"-Werror"
]
print("\nglslc cmd:", cmd)
subprocess.check_call(cmd)
spvPaths[spvPath] = templateSrcPath
h = "#pragma once\n"
h += "#include <stdint.h>\n"
h += "#include <vector>\n"
h += "#include <ATen/native/vulkan/api/vk_api.h>"
nsbegin = "\nnamespace at {\nnamespace native {\nnamespace vulkan {\n"
nsend = "\n}\n}\n} //namespace at::native::vulkan\n"
h += nsbegin
cpp = "#include <ATen/native/vulkan/{}>".format(H_NAME)
cpp += nsbegin
for spvPath, srcPath in spvPaths.items():
name = getName(spvPath)
name_len = name + "_len"
h += "extern const uint32_t {}[];\n".format(name)
h += "extern const uint32_t {};\n".format(name_len)
layout = getLayout(srcPath)
name_layout = name + "_layout"
h += "extern const std::vector<VkDescriptorType> {};\n".format(name_layout)
cpp += "const uint32_t " + name + "[] = {\n"
sizeBytes = 0
print("spvPath:{}".format(spvPath))
with open(spvPath, 'rb') as f:
for word in array.array('I', f.read()):
cpp += "{},\n".format(word)
sizeBytes += 4
cpp += "};\n"
cpp += "const uint32_t {} = {};\n".format(name_len, sizeBytes)
# Add layout
cpp += "const std::vector<VkDescriptorType> {} = {{\n".format(name_layout)
for descriptor in layout:
cpp += " {},\n".format(descriptor)
cpp += "};\n"
cpp += nsend
h += nsend
with open(hFilePath, "w") as f:
f.write(h)
with open(cppFilePath, "w") as f:
f.write(cpp)
def parse_arg_env(items):
d = {}
if items:
for item in items:
tokens = item.split("=")
key = tokens[0].strip()
value = tokens[1].strip()
d[key] = value
return d
def main(argv):
parser = argparse.ArgumentParser(description='')
parser.add_argument(
'-i',
'--glsl-path',
help='',
default='.')
parser.add_argument(
'-c',
'--glslc-path',
required=True,
help='')
parser.add_argument(
'-t',
'--tmp-dir-path',
required=True,
help='/tmp')
parser.add_argument(
'-o',
'--output-path',
required=True,
help='')
parser.add_argument(
"--env",
metavar="KEY=VALUE",
nargs='*',
help="Set a number of key-value pairs")
options = parser.parse_args()
env = DEFAULT_ENV
for key, value in parse_arg_env(options.env).items():
env[key] = value
if not os.path.exists(options.output_path):
os.makedirs(options.output_path)
if not os.path.exists(options.tmp_dir_path):
os.makedirs(options.tmp_dir_path)
genCppH(
hFilePath=options.output_path + "/spv.h",
cppFilePath=options.output_path + "/spv.cpp",
srcDirPath=options.glsl_path,
glslcPath=options.glslc_path,
tmpDirPath=options.tmp_dir_path,
env=env)
if __name__ == '__main__':
sys.exit(main(sys.argv))
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