SPIRV-Cross/test_shaders.py

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#!/usr/bin/env python3
import sys
import os
import os.path
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import subprocess
import tempfile
import re
import itertools
import hashlib
import shutil
import argparse
import codecs
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import json
import multiprocessing
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import errno
from functools import partial
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class Paths():
def __init__(self, spirv_cross, glslang, spirv_as, spirv_val, spirv_opt):
self.spirv_cross = spirv_cross
self.glslang = glslang
self.spirv_as = spirv_as
self.spirv_val = spirv_val
self.spirv_opt = spirv_opt
def remove_file(path):
#print('Removing file:', path)
os.remove(path)
def create_temporary(suff = ''):
f, path = tempfile.mkstemp(suffix = suff)
os.close(f)
#print('Creating temporary:', path)
return path
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def parse_stats(stats):
m = re.search('([0-9]+) work registers', stats)
registers = int(m.group(1)) if m else 0
m = re.search('([0-9]+) uniform registers', stats)
uniform_regs = int(m.group(1)) if m else 0
m_list = re.findall('(-?[0-9]+)\s+(-?[0-9]+)\s+(-?[0-9]+)', stats)
alu_short = float(m_list[1][0]) if m_list else 0
ls_short = float(m_list[1][1]) if m_list else 0
tex_short = float(m_list[1][2]) if m_list else 0
alu_long = float(m_list[2][0]) if m_list else 0
ls_long = float(m_list[2][1]) if m_list else 0
tex_long = float(m_list[2][2]) if m_list else 0
return (registers, uniform_regs, alu_short, ls_short, tex_short, alu_long, ls_long, tex_long)
def get_shader_type(shader):
_, ext = os.path.splitext(shader)
if ext == '.vert':
return '--vertex'
elif ext == '.frag':
return '--fragment'
elif ext == '.comp':
return '--compute'
elif ext == '.tesc':
return '--tessellation_control'
elif ext == '.tese':
return '--tessellation_evaluation'
elif ext == '.geom':
return '--geometry'
else:
return ''
def get_shader_stats(shader):
path = create_temporary()
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p = subprocess.Popen(['malisc', get_shader_type(shader), '--core', 'Mali-T760', '-V', shader], stdout = subprocess.PIPE, stderr = subprocess.PIPE)
stdout, stderr = p.communicate()
remove_file(path)
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if p.returncode != 0:
print(stderr.decode('utf-8'))
raise OSError('malisc failed')
p.wait()
returned = stdout.decode('utf-8')
return parse_stats(returned)
def print_msl_compiler_version():
try:
subprocess.check_call(['xcrun', '--sdk', 'iphoneos', 'metal', '--version'])
print('...are the Metal compiler characteristics.\n') # display after so xcrun FNF is silent
except OSError as e:
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if (e.errno != errno.ENOENT): # Ignore xcrun not found error
raise
except subprocess.CalledProcessError:
pass
def msl_compiler_supports_22():
try:
subprocess.check_call(['xcrun', '--sdk', 'macosx', 'metal', '-x', 'metal', '-std=macos-metal2.2', '-'],
stdin = subprocess.DEVNULL, stdout = subprocess.DEVNULL, stderr = subprocess.DEVNULL)
print('Current SDK supports MSL 2.2. Enabling validation for MSL 2.2 shaders.')
return True
except OSError as e:
print('Failed to check if MSL 2.2 is not supported. It probably is not.')
return False
except subprocess.CalledProcessError:
print('Current SDK does NOT support MSL 2.2. Disabling validation for MSL 2.2 shaders.')
return False
def path_to_msl_standard(shader):
if '.ios.' in shader:
if '.msl2.' in shader:
return '-std=ios-metal2.0'
elif '.msl21.' in shader:
return '-std=ios-metal2.1'
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elif '.msl22.' in shader:
return '-std=ios-metal2.2'
elif '.msl11.' in shader:
return '-std=ios-metal1.1'
elif '.msl10.' in shader:
return '-std=ios-metal1.0'
else:
return '-std=ios-metal1.2'
else:
if '.msl2.' in shader:
return '-std=macos-metal2.0'
elif '.msl21.' in shader:
return '-std=macos-metal2.1'
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elif '.msl22.' in shader:
return '-std=macos-metal2.2'
elif '.msl11.' in shader:
return '-std=macos-metal1.1'
else:
return '-std=macos-metal1.2'
def path_to_msl_standard_cli(shader):
if '.msl2.' in shader:
return '20000'
elif '.msl21.' in shader:
return '20100'
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elif '.msl22.' in shader:
return '20200'
elif '.msl11.' in shader:
return '10100'
else:
return '10200'
def validate_shader_msl(shader, opt):
msl_path = reference_path(shader[0], shader[1], opt)
try:
if '.ios.' in msl_path:
msl_os = 'iphoneos'
else:
msl_os = 'macosx'
subprocess.check_call(['xcrun', '--sdk', msl_os, 'metal', '-x', 'metal', path_to_msl_standard(msl_path), '-Werror', '-Wno-unused-variable', msl_path])
print('Compiled Metal shader: ' + msl_path) # display after so xcrun FNF is silent
except OSError as oe:
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if (oe.errno != errno.ENOENT): # Ignore xcrun not found error
raise
except subprocess.CalledProcessError:
print('Error compiling Metal shader: ' + msl_path)
raise RuntimeError('Failed to compile Metal shader')
def cross_compile_msl(shader, spirv, opt, iterations, paths):
spirv_path = create_temporary()
msl_path = create_temporary(os.path.basename(shader))
spirv_cmd = [paths.spirv_as, '--target-env', 'vulkan1.1', '-o', spirv_path, shader]
if '.preserve.' in shader:
spirv_cmd.append('--preserve-numeric-ids')
if spirv:
subprocess.check_call(spirv_cmd)
else:
subprocess.check_call([paths.glslang, '--target-env', 'vulkan1.1', '-V', '-o', spirv_path, shader])
if opt:
subprocess.check_call([paths.spirv_opt, '--skip-validation', '-O', '-o', spirv_path, spirv_path])
spirv_cross_path = paths.spirv_cross
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msl_args = [spirv_cross_path, '--entry', 'main', '--output', msl_path, spirv_path, '--msl', '--iterations', str(iterations)]
msl_args.append('--msl-version')
msl_args.append(path_to_msl_standard_cli(shader))
if '.swizzle.' in shader:
msl_args.append('--msl-swizzle-texture-samples')
if '.ios.' in shader:
msl_args.append('--msl-ios')
if '.pad-fragment.' in shader:
msl_args.append('--msl-pad-fragment-output')
if '.capture.' in shader:
msl_args.append('--msl-capture-output')
if '.domain.' in shader:
msl_args.append('--msl-domain-lower-left')
if '.argument.' in shader:
msl_args.append('--msl-argument-buffers')
if '.texture-buffer-native.' in shader:
msl_args.append('--msl-texture-buffer-native')
if '.discrete.' in shader:
# Arbitrary for testing purposes.
msl_args.append('--msl-discrete-descriptor-set')
msl_args.append('2')
msl_args.append('--msl-discrete-descriptor-set')
msl_args.append('3')
if '.line.' in shader:
msl_args.append('--emit-line-directives')
if '.multiview.' in shader:
msl_args.append('--msl-multiview')
if '.viewfromdev.' in shader:
msl_args.append('--msl-view-index-from-device-index')
if '.dispatchbase.' in shader:
msl_args.append('--msl-dispatch-base')
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subprocess.check_call(msl_args)
if not shader_is_invalid_spirv(msl_path):
subprocess.check_call([paths.spirv_val, '--scalar-block-layout', '--target-env', 'vulkan1.1', spirv_path])
return (spirv_path, msl_path)
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def shader_model_hlsl(shader):
if '.vert' in shader:
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if '.sm30.' in shader:
return '-Tvs_3_0'
else:
return '-Tvs_5_1'
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elif '.frag' in shader:
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if '.sm30.' in shader:
return '-Tps_3_0'
else:
return '-Tps_5_1'
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elif '.comp' in shader:
return '-Tcs_5_1'
else:
return None
def shader_to_win_path(shader):
# It's (very) convenient to be able to run HLSL testing in wine on Unix-likes, so support that.
try:
with subprocess.Popen(['winepath', '-w', shader], stdout = subprocess.PIPE, stderr = subprocess.PIPE) as f:
stdout_data, stderr_data = f.communicate()
return stdout_data.decode('utf-8')
except OSError as oe:
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if (oe.errno != errno.ENOENT): # Ignore not found errors
return shader
except subprocess.CalledProcessError:
raise
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return shader
ignore_fxc = False
def validate_shader_hlsl(shader, force_no_external_validation, paths):
test_glslang = True
if '.nonuniformresource.' in shader:
test_glslang = False
if '.fxconly.' in shader:
test_glslang = False
if test_glslang:
subprocess.check_call([paths.glslang, '-e', 'main', '-D', '--target-env', 'vulkan1.1', '-V', shader])
is_no_fxc = '.nofxc.' in shader
global ignore_fxc
if (not ignore_fxc) and (not force_no_external_validation) and (not is_no_fxc):
try:
win_path = shader_to_win_path(shader)
args = ['fxc', '-nologo', shader_model_hlsl(shader), win_path]
if '.nonuniformresource.' in shader:
args.append('/enable_unbounded_descriptor_tables')
subprocess.check_call(args)
except OSError as oe:
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if (oe.errno != errno.ENOENT): # Ignore not found errors
print('Failed to run FXC.')
ignore_fxc = True
raise
else:
print('Could not find FXC.')
ignore_fxc = True
except subprocess.CalledProcessError:
print('Failed compiling HLSL shader:', shader, 'with FXC.')
raise RuntimeError('Failed compiling HLSL shader')
def shader_to_sm(shader):
if '.sm60.' in shader:
return '60'
elif '.sm51.' in shader:
return '51'
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elif '.sm30.' in shader:
return '30'
else:
return '50'
def cross_compile_hlsl(shader, spirv, opt, force_no_external_validation, iterations, paths):
spirv_path = create_temporary()
hlsl_path = create_temporary(os.path.basename(shader))
spirv_cmd = [paths.spirv_as, '--target-env', 'vulkan1.1', '-o', spirv_path, shader]
if '.preserve.' in shader:
spirv_cmd.append('--preserve-numeric-ids')
if spirv:
subprocess.check_call(spirv_cmd)
else:
subprocess.check_call([paths.glslang, '--target-env', 'vulkan1.1', '-V', '-o', spirv_path, shader])
if opt:
subprocess.check_call([paths.spirv_opt, '--skip-validation', '-O', '-o', spirv_path, spirv_path])
spirv_cross_path = paths.spirv_cross
sm = shader_to_sm(shader)
hlsl_args = [spirv_cross_path, '--entry', 'main', '--output', hlsl_path, spirv_path, '--hlsl-enable-compat', '--hlsl', '--shader-model', sm, '--iterations', str(iterations)]
if '.line.' in shader:
hlsl_args.append('--emit-line-directives')
subprocess.check_call(hlsl_args)
if not shader_is_invalid_spirv(hlsl_path):
subprocess.check_call([paths.spirv_val, '--scalar-block-layout', '--target-env', 'vulkan1.1', spirv_path])
validate_shader_hlsl(hlsl_path, force_no_external_validation, paths)
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return (spirv_path, hlsl_path)
def cross_compile_reflect(shader, spirv, opt, iterations, paths):
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spirv_path = create_temporary()
reflect_path = create_temporary(os.path.basename(shader))
spirv_cmd = [paths.spirv_as, '--target-env', 'vulkan1.1', '-o', spirv_path, shader]
if '.preserve.' in shader:
spirv_cmd.append('--preserve-numeric-ids')
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if spirv:
subprocess.check_call(spirv_cmd)
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else:
subprocess.check_call([paths.glslang, '--target-env', 'vulkan1.1', '-V', '-o', spirv_path, shader])
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if opt:
subprocess.check_call([paths.spirv_opt, '--skip-validation', '-O', '-o', spirv_path, spirv_path])
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spirv_cross_path = paths.spirv_cross
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sm = shader_to_sm(shader)
subprocess.check_call([spirv_cross_path, '--entry', 'main', '--output', reflect_path, spirv_path, '--reflect', '--iterations', str(iterations)])
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return (spirv_path, reflect_path)
def validate_shader(shader, vulkan, paths):
if vulkan:
subprocess.check_call([paths.glslang, '--target-env', 'vulkan1.1', '-V', shader])
else:
subprocess.check_call([paths.glslang, shader])
def cross_compile(shader, vulkan, spirv, invalid_spirv, eliminate, is_legacy, flatten_ubo, sso, flatten_dim, opt, push_ubo, iterations, paths):
spirv_path = create_temporary()
glsl_path = create_temporary(os.path.basename(shader))
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if vulkan or spirv:
vulkan_glsl_path = create_temporary('vk' + os.path.basename(shader))
spirv_cmd = [paths.spirv_as, '--target-env', 'vulkan1.1', '-o', spirv_path, shader]
if '.preserve.' in shader:
spirv_cmd.append('--preserve-numeric-ids')
if spirv:
subprocess.check_call(spirv_cmd)
else:
subprocess.check_call([paths.glslang, '--target-env', 'vulkan1.1', '-V', '-o', spirv_path, shader])
if opt and (not invalid_spirv):
subprocess.check_call([paths.spirv_opt, '--skip-validation', '-O', '-o', spirv_path, spirv_path])
if not invalid_spirv:
subprocess.check_call([paths.spirv_val, '--scalar-block-layout', '--target-env', 'vulkan1.1', spirv_path])
extra_args = ['--iterations', str(iterations)]
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if eliminate:
extra_args += ['--remove-unused-variables']
if is_legacy:
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extra_args += ['--version', '100', '--es']
if flatten_ubo:
extra_args += ['--flatten-ubo']
if sso:
extra_args += ['--separate-shader-objects']
if flatten_dim:
extra_args += ['--flatten-multidimensional-arrays']
if push_ubo:
extra_args += ['--glsl-emit-push-constant-as-ubo']
if '.line.' in shader:
extra_args += ['--emit-line-directives']
if '.no-samplerless.' in shader:
extra_args += ['--vulkan-glsl-disable-ext-samplerless-texture-functions']
spirv_cross_path = paths.spirv_cross
# A shader might not be possible to make valid GLSL from, skip validation for this case.
if not ('nocompat' in glsl_path):
subprocess.check_call([spirv_cross_path, '--entry', 'main', '--output', glsl_path, spirv_path] + extra_args)
validate_shader(glsl_path, False, paths)
else:
remove_file(glsl_path)
glsl_path = None
if vulkan or spirv:
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subprocess.check_call([spirv_cross_path, '--entry', 'main', '--vulkan-semantics', '--output', vulkan_glsl_path, spirv_path] + extra_args)
validate_shader(vulkan_glsl_path, True, paths)
# SPIR-V shaders might just want to validate Vulkan GLSL output, we don't always care about the output.
if not vulkan:
remove_file(vulkan_glsl_path)
return (spirv_path, glsl_path, vulkan_glsl_path if vulkan else None)
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def make_unix_newline(buf):
decoded = codecs.decode(buf, 'utf-8')
decoded = decoded.replace('\r', '')
return codecs.encode(decoded, 'utf-8')
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def md5_for_file(path):
md5 = hashlib.md5()
with open(path, 'rb') as f:
for chunk in iter(lambda: make_unix_newline(f.read(8192)), b''):
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md5.update(chunk)
return md5.digest()
def make_reference_dir(path):
base = os.path.dirname(path)
if not os.path.exists(base):
os.makedirs(base)
def reference_path(directory, relpath, opt):
split_paths = os.path.split(directory)
reference_dir = os.path.join(split_paths[0], 'reference/' + ('opt/' if opt else ''))
reference_dir = os.path.join(reference_dir, split_paths[1])
return os.path.join(reference_dir, relpath)
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def json_ordered(obj):
if isinstance(obj, dict):
return sorted((k, json_ordered(v)) for k, v in obj.items())
if isinstance(obj, list):
return sorted(json_ordered(x) for x in obj)
else:
return obj
def json_compare(json_a, json_b):
return json_ordered(json_a) == json_ordered(json_b)
def regression_check_reflect(shader, json_file, args):
reference = reference_path(shader[0], shader[1], args.opt) + '.json'
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joined_path = os.path.join(shader[0], shader[1])
print('Reference shader reflection path:', reference)
if os.path.exists(reference):
actual = ''
expected = ''
with open(json_file) as f:
actual_json = f.read();
actual = json.loads(actual_json)
with open(reference) as f:
expected = json.load(f)
if (json_compare(actual, expected) != True):
if args.update:
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print('Generated reflection json has changed for {}!'.format(reference))
# If we expect changes, update the reference file.
if os.path.exists(reference):
remove_file(reference)
make_reference_dir(reference)
shutil.move(json_file, reference)
else:
print('Generated reflection json in {} does not match reference {}!'.format(json_file, reference))
with open(json_file, 'r') as f:
print('')
print('Generated:')
print('======================')
print(f.read())
print('======================')
print('')
# Otherwise, fail the test. Keep the shader file around so we can inspect.
if not args.keep:
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remove_file(json_file)
raise RuntimeError('Does not match reference')
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else:
remove_file(json_file)
else:
print('Found new shader {}. Placing generated source code in {}'.format(joined_path, reference))
make_reference_dir(reference)
shutil.move(json_file, reference)
def regression_check(shader, glsl, args):
reference = reference_path(shader[0], shader[1], args.opt)
joined_path = os.path.join(shader[0], shader[1])
print('Reference shader path:', reference)
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if os.path.exists(reference):
if md5_for_file(glsl) != md5_for_file(reference):
if args.update:
print('Generated source code has changed for {}!'.format(reference))
# If we expect changes, update the reference file.
if os.path.exists(reference):
remove_file(reference)
make_reference_dir(reference)
shutil.move(glsl, reference)
else:
print('Generated source code in {} does not match reference {}!'.format(glsl, reference))
with open(glsl, 'r') as f:
print('')
print('Generated:')
print('======================')
print(f.read())
print('======================')
print('')
# Otherwise, fail the test. Keep the shader file around so we can inspect.
if not args.keep:
remove_file(glsl)
raise RuntimeError('Does not match reference')
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else:
remove_file(glsl)
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else:
print('Found new shader {}. Placing generated source code in {}'.format(joined_path, reference))
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make_reference_dir(reference)
shutil.move(glsl, reference)
def shader_is_vulkan(shader):
return '.vk.' in shader
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def shader_is_desktop(shader):
return '.desktop.' in shader
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def shader_is_eliminate_dead_variables(shader):
return '.noeliminate.' not in shader
def shader_is_spirv(shader):
return '.asm.' in shader
def shader_is_invalid_spirv(shader):
return '.invalid.' in shader
def shader_is_legacy(shader):
return '.legacy.' in shader
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def shader_is_flatten_ubo(shader):
return '.flatten.' in shader
def shader_is_sso(shader):
return '.sso.' in shader
def shader_is_flatten_dimensions(shader):
return '.flatten_dim.' in shader
def shader_is_noopt(shader):
return '.noopt.' in shader
def shader_is_push_ubo(shader):
return '.push-ubo.' in shader
def test_shader(stats, shader, args, paths):
joined_path = os.path.join(shader[0], shader[1])
vulkan = shader_is_vulkan(shader[1])
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desktop = shader_is_desktop(shader[1])
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eliminate = shader_is_eliminate_dead_variables(shader[1])
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is_spirv = shader_is_spirv(shader[1])
invalid_spirv = shader_is_invalid_spirv(shader[1])
is_legacy = shader_is_legacy(shader[1])
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flatten_ubo = shader_is_flatten_ubo(shader[1])
sso = shader_is_sso(shader[1])
flatten_dim = shader_is_flatten_dimensions(shader[1])
noopt = shader_is_noopt(shader[1])
push_ubo = shader_is_push_ubo(shader[1])
print('Testing shader:', joined_path)
spirv, glsl, vulkan_glsl = cross_compile(joined_path, vulkan, is_spirv, invalid_spirv, eliminate, is_legacy, flatten_ubo, sso, flatten_dim, args.opt and (not noopt), push_ubo, args.iterations, paths)
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# Only test GLSL stats if we have a shader following GL semantics.
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if stats and (not vulkan) and (not is_spirv) and (not desktop):
cross_stats = get_shader_stats(glsl)
if glsl:
regression_check(shader, glsl, args)
if vulkan_glsl:
regression_check((shader[0], shader[1] + '.vk'), vulkan_glsl, args)
remove_file(spirv)
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if stats and (not vulkan) and (not is_spirv) and (not desktop):
pristine_stats = get_shader_stats(joined_path)
a = []
a.append(shader[1])
for i in pristine_stats:
a.append(str(i))
for i in cross_stats:
a.append(str(i))
print(','.join(a), file = stats)
def test_shader_msl(stats, shader, args, paths):
joined_path = os.path.join(shader[0], shader[1])
print('\nTesting MSL shader:', joined_path)
is_spirv = shader_is_spirv(shader[1])
noopt = shader_is_noopt(shader[1])
spirv, msl = cross_compile_msl(joined_path, is_spirv, args.opt and (not noopt), args.iterations, paths)
regression_check(shader, msl, args)
# Uncomment the following line to print the temp SPIR-V file path.
# This temp SPIR-V file is not deleted until after the Metal validation step below.
# If Metal validation fails, the temp SPIR-V file can be copied out and
# used as input to an invocation of spirv-cross to debug from Xcode directly.
# To do so, build spriv-cross using `make DEBUG=1`, then run the spriv-cross
# executable from Xcode using args: `--msl --entry main --output msl_path spirv_path`.
# print('SPRIV shader: ' + spirv)
shader_is_msl22 = 'msl22' in joined_path
skip_validation = shader_is_msl22 and (not args.msl22)
if '.invalid.' in joined_path:
skip_validation = True
if (not args.force_no_external_validation) and (not skip_validation):
validate_shader_msl(shader, args.opt)
remove_file(spirv)
def test_shader_hlsl(stats, shader, args, paths):
joined_path = os.path.join(shader[0], shader[1])
print('Testing HLSL shader:', joined_path)
is_spirv = shader_is_spirv(shader[1])
noopt = shader_is_noopt(shader[1])
spirv, hlsl = cross_compile_hlsl(joined_path, is_spirv, args.opt and (not noopt), args.force_no_external_validation, args.iterations, paths)
regression_check(shader, hlsl, args)
remove_file(spirv)
def test_shader_reflect(stats, shader, args, paths):
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joined_path = os.path.join(shader[0], shader[1])
print('Testing shader reflection:', joined_path)
is_spirv = shader_is_spirv(shader[1])
noopt = shader_is_noopt(shader[1])
spirv, reflect = cross_compile_reflect(joined_path, is_spirv, args.opt and (not noopt), args.iterations, paths)
regression_check_reflect(shader, reflect, args)
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remove_file(spirv)
def test_shader_file(relpath, stats, args, backend):
paths = Paths(args.spirv_cross, args.glslang, args.spirv_as, args.spirv_val, args.spirv_opt)
try:
if backend == 'msl':
test_shader_msl(stats, (args.folder, relpath), args, paths)
elif backend == 'hlsl':
test_shader_hlsl(stats, (args.folder, relpath), args, paths)
elif backend == 'reflect':
test_shader_reflect(stats, (args.folder, relpath), args, paths)
else:
test_shader(stats, (args.folder, relpath), args, paths)
return None
except Exception as e:
return e
def test_shaders_helper(stats, backend, args):
all_files = []
for root, dirs, files in os.walk(os.path.join(args.folder)):
files = [ f for f in files if not f.startswith(".") ] #ignore system files (esp OSX)
for i in files:
path = os.path.join(root, i)
relpath = os.path.relpath(path, args.folder)
all_files.append(relpath)
# The child processes in parallel execution mode don't have the proper state for the global args variable, so
# at this point we need to switch to explicit arguments
if args.parallel:
pool = multiprocessing.Pool(multiprocessing.cpu_count())
results = []
for f in all_files:
results.append(pool.apply_async(test_shader_file,
args = (f, stats, args, backend)))
for res in results:
error = res.get()
if error is not None:
pool.close()
pool.join()
print('Error:', error)
sys.exit(1)
else:
for i in all_files:
e = test_shader_file(i, stats, args, backend)
if e is not None:
print('Error:', e)
sys.exit(1)
def test_shaders(backend, args):
if args.malisc:
with open('stats.csv', 'w') as stats:
print('Shader,OrigRegs,OrigUniRegs,OrigALUShort,OrigLSShort,OrigTEXShort,OrigALULong,OrigLSLong,OrigTEXLong,CrossRegs,CrossUniRegs,CrossALUShort,CrossLSShort,CrossTEXShort,CrossALULong,CrossLSLong,CrossTEXLong', file = stats)
test_shaders_helper(stats, backend, args)
else:
test_shaders_helper(None, backend, args)
def main():
parser = argparse.ArgumentParser(description = 'Script for regression testing.')
parser.add_argument('folder',
help = 'Folder containing shader files to test.')
parser.add_argument('--update',
action = 'store_true',
help = 'Updates reference files if there is a mismatch. Use when legitimate changes in output is found.')
parser.add_argument('--keep',
action = 'store_true',
help = 'Leave failed GLSL shaders on disk if they fail regression. Useful for debugging.')
parser.add_argument('--malisc',
action = 'store_true',
help = 'Use malisc offline compiler to determine static cycle counts before and after spirv-cross.')
parser.add_argument('--msl',
action = 'store_true',
help = 'Test Metal backend.')
parser.add_argument('--metal',
action = 'store_true',
help = 'Deprecated Metal option. Use --msl instead.')
parser.add_argument('--hlsl',
action = 'store_true',
help = 'Test HLSL backend.')
parser.add_argument('--force-no-external-validation',
action = 'store_true',
help = 'Disable all external validation.')
parser.add_argument('--opt',
action = 'store_true',
help = 'Run SPIRV-Tools optimization passes as well.')
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parser.add_argument('--reflect',
action = 'store_true',
help = 'Test reflection backend.')
parser.add_argument('--parallel',
action = 'store_true',
help = 'Execute tests in parallel. Useful for doing regression quickly, but bad for debugging and stat output.')
parser.add_argument('--spirv-cross',
default = './spirv-cross',
help = 'Explicit path to spirv-cross')
parser.add_argument('--glslang',
default = 'glslangValidator',
help = 'Explicit path to glslangValidator')
parser.add_argument('--spirv-as',
default = 'spirv-as',
help = 'Explicit path to spirv-as')
parser.add_argument('--spirv-val',
default = 'spirv-val',
help = 'Explicit path to spirv-val')
parser.add_argument('--spirv-opt',
default = 'spirv-opt',
help = 'Explicit path to spirv-opt')
parser.add_argument('--iterations',
default = 1,
type = int,
help = 'Number of iterations to run SPIRV-Cross (benchmarking)')
args = parser.parse_args()
if not args.folder:
sys.stderr.write('Need shader folder.\n')
sys.exit(1)
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if (args.parallel and (args.malisc or args.force_no_external_validation or args.update)):
sys.stderr.write('Parallel execution is disabled when using the flags --update, --malisc or --force-no-external-validation\n')
args.parallel = False
args.msl22 = False
if args.msl:
print_msl_compiler_version()
args.msl22 = msl_compiler_supports_22()
backend = 'glsl'
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if (args.msl or args.metal):
backend = 'msl'
elif args.hlsl:
backend = 'hlsl'
elif args.reflect:
backend = 'reflect'
test_shaders(backend, args)
if args.malisc:
print('Stats in stats.csv!')
print('Tests completed!')
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if __name__ == '__main__':
main()