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# Copyright (C) 2012, 2014 Intel Corporation
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following
# conditions:
#
# This permission notice shall be included in all copies or
# substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR(S) BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
# OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
""" This module enables running shader tests. """
from __future__ import print_function, absolute_import
import os
import os.path as path
import re
from .piglit_test import PiglitBaseTest
__all__ = [
'ShaderTest',
'ShaderTestParserException',
'add_shader_test',
'add_shader_test_dir'
]
class ShaderTest(PiglitBaseTest):
""" Parse a shader test file and return a PiglitTest instance
This function parses a shader test to determine if it's a GL, GLES2 or
GLES3 test, and then returns a PiglitTest setup properly.
"""
def __init__(self, arguments):
is_gl = re.compile(r'GL (<|<=|=|>=|>) \d\.\d')
# Iterate over the lines in shader file looking for the config section.
# By using a generator this can be split into two for loops at minimal
# cost. The first one looks for the start of the config block or raises
# an exception. The second looks for the GL version or raises an
# exception
with open(arguments, 'r') as shader_file:
lines = (l for l in shader_file)
# Find the config section
for line in lines:
# We need to find the first line of the configuration file, as
# soon as we do then we can move on to geting the
# configuration. The first line needs to be parsed by the next
# block.
if line.lstrip().startswith('[require]'):
break
else:
raise ShaderTestParserException("Config block not found")
# Find the OpenGL API to use
for line in lines:
line = line.strip()
if line.startswith('GL ES'):
if line.endswith('3.0'):
prog = 'shader_runner_gles3'
elif line.endswith('2.0'):
prog = 'shader_runner_gles2'
# If we don't set gles2 or gles3 continue the loop,
# probably htting the exception in the for/else
else:
raise ShaderTestParserException("No GL ES version set")
break
elif line.startswith('[') or is_gl.match(line):
# In the event that we reach the end of the config black
# and an API hasn't been found, it's an old test and uses
# "GL"
prog = 'shader_runner'
break
else:
raise ShaderTestParserException("No GL version set")
super(ShaderTest, self).__init__([prog, arguments], run_concurrent=True)
@PiglitBaseTest.command.getter
def command(self):
""" Add -auto to the test command """
return self._command + ['-auto']
class ShaderTestParserException(Exception):
""" An excpetion to be raised for errors in the ShaderTest parser """
pass
def add_shader_test(group, testname, filepath):
""" Add a shader test to a group
Arguments:
group -- a dictionary-like object to add the test to
testname -- the key to use in the group
filepath -- the argument to pass to ShaderTest
"""
group[testname] = ShaderTest(filepath)
def add_shader_test_dir(group, dirpath, recursive=False):
"""Add all shader tests in a directory to the given group."""
for filename in os.listdir(dirpath):
filepath = path.join(dirpath, filename)
if path.isdir(filepath):
if not recursive:
continue
if not filename in group:
group[filename] = {}
add_shader_test_dir(group[filename], filepath, recursive)
else:
ext = filename.rsplit('.')[-1]
if ext != 'shader_test':
continue
testname = filename[0:-(len(ext) + 1)] # +1 for '.'
add_shader_test(group, testname, filepath)
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