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#!/usr/bin/env python
#
# Copyright 2020 Google LLC
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import shlex
import subprocess
import sys
import tempfile
batchCompile = True
skslc = sys.argv[1]
lang = sys.argv[2]
settings = sys.argv[3]
with open(sys.argv[4], 'r') as reader:
inputs = shlex.split(reader.read())
def pairwise(iterable):
# Iterate over an array pairwise (two elements at a time).
a = iter(iterable)
return zip(a, a)
def executeWorklist(input, worklist):
# Invoke skslc, passing in the worklist.
worklist.close()
try:
output = subprocess.check_output([skslc, worklist.name], stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as err:
if err.returncode != 1:
print("### " + input + " skslc error:\n")
print("\n".join(err.output.splitlines()))
sys.exit(err.returncode)
pass # Compile errors (exit code 1) are expected and normal in test code
# Delete the worklist file now that execution is complete.
os.remove(worklist.name)
def makeEmptyFile(path):
try:
open(path, 'wb').close()
except OSError:
pass
def extensionForSpirvAsm(ext):
return ext if (ext == '.frag' or ext == '.vert' or ext == '.geom') else '.frag'
if settings != "--settings" and settings != "--nosettings":
sys.exit("### Expected --settings or --nosettings, got " + settings)
targets = []
worklist = tempfile.NamedTemporaryFile(suffix='.worklist', delete=False)
# The `inputs` array pairs off input files with their matching output directory, e.g.:
# //skia/tests/sksl/shared/test.sksl
# //skia/tests/sksl/shared/golden/
# //skia/tests/sksl/intrinsics/abs.sksl
# //skia/tests/sksl/intrinsics/golden/
# ... (etc) ...
# Here we loop over these inputs and convert them into a worklist file for skslc.
for input, targetDir in pairwise(inputs):
noExt, ext = os.path.splitext(input)
head, tail = os.path.split(noExt)
if not os.path.isdir(targetDir):
os.mkdir(targetDir)
target = os.path.join(targetDir, tail)
if settings == "--nosettings":
target += "StandaloneSettings"
targets.append(target)
if lang == "--fp":
worklist.write(input + "\n")
worklist.write(target + ".cpp\n")
worklist.write(settings + "\n\n")
worklist.write(input + "\n")
worklist.write(target + ".h\n")
worklist.write(settings + "\n\n")
elif lang == "--dslfp":
worklist.write(input + "\n")
worklist.write(target + ".dsl.cpp\n")
worklist.write(settings + "\n\n")
worklist.write(input + "\n")
worklist.write(target + ".h\n")
worklist.write(settings + "\n\n")
elif lang == "--glsl":
worklist.write(input + "\n")
worklist.write(target + ".glsl\n")
worklist.write(settings + "\n\n")
elif lang == "--metal":
worklist.write(input + "\n")
worklist.write(target + ".metal\n")
worklist.write(settings + "\n\n")
elif lang == "--spirv":
worklist.write(input + "\n")
worklist.write(target + ".asm" + extensionForSpirvAsm(ext) + "\n")
worklist.write(settings + "\n\n")
elif lang == "--skvm":
worklist.write(input + "\n")
worklist.write(target + ".skvm\n")
worklist.write(settings + "\n\n")
elif lang == "--stage":
worklist.write(input + "\n")
worklist.write(target + ".stage\n")
worklist.write(settings + "\n\n")
else:
sys.exit("### Expected one of: --fp --dslfp --glsl --metal --spirv --skvm --stage, got " +
lang)
# Compile items one at a time.
if not batchCompile:
executeWorklist(input, worklist)
worklist = tempfile.NamedTemporaryFile(suffix='.worklist', delete=False)
# Compile everything all in one go.
if batchCompile:
executeWorklist("", worklist)
else:
worklist.close()
os.remove(worklist.name)
# A special case cleanup pass, just for CPP and H files: if either one of these files starts with
# `### Compilation failed`, its sibling should be replaced by an empty file. This improves clarity
# during code review; a failure on either file means that success on the sibling is irrelevant.
if lang == "--fp" or lang == "--dslfp":
cppExtension = (".dsl.cpp" if lang == "--dslfp" else ".cpp")
hExtension = ".h"
for target in targets:
cppFile = open(target + cppExtension, 'r')
hFile = open(target + hExtension, 'r')
if cppFile.readline().startswith("### Compilation failed"):
# The CPP had a compilation failure. Clear the header file.
hFile.close()
makeEmptyFile(target + hExtension)
elif hFile.readline().startswith("### Compilation failed"):
# The header had a compilation failure. Clear the CPP file.
cppFile.close()
makeEmptyFile(target + cppExtension)