/
glsl-validate.py
executable file
·182 lines (153 loc) · 6.13 KB
/
glsl-validate.py
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#!/usr/bin/python
import argparse
import os
import platform
import re
import subprocess
DIR = os.path.dirname(os.path.realpath(__file__))
# Select the correct essl_to_glsl executable for this platform
if platform.system() == 'Darwin':
ESSL_TO_GLSL = os.path.join(DIR, "angle/essl_to_glsl_osx")
elif platform.system() == 'Linux':
ESSL_TO_GLSL = os.path.join(DIR, "angle/essl_to_glsl_linux")
elif platform.system() == 'Windows':
ESSL_TO_GLSL = os.path.join(DIR, "angle/essl_to_glsl_win.exe")
else:
print "Unsupported platform"
exit(1)
# See README for where to obtain
CGC = os.path.join(DIR, "cgc")
args = {}
# Color terminal output
def color(s, color):
if args.color:
return "\033[1;%dm%s\033[1;m" % (color, s)
else:
return s
def grey(s):
return color(s, 30)
def load_shader(shader_file):
output = ""
# Keep track of line numbers, #including will result in some corresponding
# to other files
line_labels = []
with open(shader_file, 'r') as f:
line_num = 1
for line in f:
include_match = re.match("#include (.*)", line)
if include_match:
include_file = include_match.group(1)
fullpath = os.path.join(os.path.dirname(shader_file),
include_file)
(included_shader, included_line_labels) = load_shader(fullpath)
output += included_shader
line_labels += included_line_labels
else:
output += line
line_labels.append("%s:%d" % (shader_file, line_num))
line_num += 1
return (output, line_labels)
def create_tmp_file(shader_file):
extension = os.path.splitext(shader_file)[1]
tmp_file_name = "tmp%s" % extension
# Load in actual shader
(shader, line_labels) = load_shader(shader_file)
# Check if marked as RawShader
if not args.raw and "RawShader" not in shader:
# Prepend the prefix shader unless we are in raw mode
prefix_shader_file = os.path.join(DIR, "prefix/prefix%s" % extension)
(prefix_shader, prefix_line_labels) = load_shader(prefix_shader_file)
shader = prefix_shader + shader
line_labels = prefix_line_labels + line_labels
with open(os.path.join(DIR, tmp_file_name), 'w') as f:
f.write(shader)
return (tmp_file_name, line_labels)
def shader_info(shader_file):
extension = os.path.splitext(shader_file)[1]
if extension == ".vert":
profile = "gpu_vp"
else:
profile = "gpu_fp"
(tmp_file_name, line_labels) = create_tmp_file(shader_file)
# Run essl_to_glsl over the shader, reporting any errors
p = subprocess.Popen([CGC, "-oglsl", "-strict", "-glslWerror", "-profile",
profile, os.path.join(DIR, tmp_file_name)],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
ret_code = p.wait()
os.remove(os.path.join(DIR, tmp_file_name))
if ret_code == 0:
lines = p.stdout.readlines()
# Discard output at top, not useful
while len(lines) > 0:
if "#program main" in lines.pop(0):
break
assembly = "".join(lines[:-1])
if args.assembly:
print assembly
count = lines[-1][2:]
print shader_file, count
else:
print 'Error!'
for line in p.stdout.readlines():
print line
def validate_shader(shader_file):
(tmp_file_name, line_labels) = create_tmp_file(shader_file)
p = subprocess.Popen([ESSL_TO_GLSL, "-s=w", "-x=d",
os.path.join(DIR, tmp_file_name)],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
ret_code = p.wait()
os.remove(os.path.join(DIR, tmp_file_name))
if ret_code != 0:
raw_errors = p.stdout.readlines()[1:-4]
# Write out formatted errors
error = ""
for e in raw_errors:
# Error format is: 'ERROR: 0:<line number>: <error message>
details = re.match("ERROR: 0:(\d+): (.*)", e)
line_number = int(details.group(1))
line_label = line_labels[line_number-1]
error_message = details.group(2)
error_format = grey("%s ") + "%s\n"
error += error_format % (line_label, error_message)
print error
exit(1)
def standalone():
parser = argparse.ArgumentParser(description='Validate three.js shaders')
parser.add_argument('files', metavar='FILE', type=str, nargs='+',
help='files to validate')
parser.add_argument('--color', dest='color', action='store_true',
help='Color output')
parser.add_argument('--no-color', dest='color', action='store_false',
help='Color output')
parser.add_argument('--raw', dest='raw', action='store_true',
help='Do not prepend standard THREE.js prefix block')
parser.add_argument('--write', dest='write', action='store_true',
help='Write out to file.full.ext')
parser.add_argument('--compile', dest='compile', action='store_true',
help='Print number of instructions according to cgc')
parser.add_argument('--assembly', dest='assembly', action='store_true',
help='Print assembly instructions according to cgc')
parser.set_defaults(color=True)
global args
args = parser.parse_args()
files = args.files
bad_extensions = filter(lambda f: not re.match('^\.(vert|frag)$',
os.path.splitext(f)[1]), files)
for f in bad_extensions:
print "Invalid file: %s, only support .frag and .vert files" % f
exit(1)
map(validate_shader, files)
if args.compile:
map(shader_info, files)
if args.write:
for f in files:
dest_name = f.split('.')
dest_name.insert(-1, 'full')
dest_name = ".".join(dest_name)
with open(dest_name, 'w') as out:
(shader, lines) = load_shader(f)
out.write(shader)
if __name__ == "__main__":
standalone()