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# coding=utf-8
#
# Copyright © 2013, 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:
#
# The above copyright notice and this permission notice (including the next
# paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
from __future__ import print_function, division, absolute_import
import struct
import os
from operator import neg
import six
from templates import template_file
from modules import utils
TEMPLATE = template_file(os.path.basename(os.path.splitext(__file__)[0]),
'template.shader_test.mako')
def floatBitsToInt(f): # pylint: disable=invalid-name
return struct.unpack('i', struct.pack('f', f))[0]
def floatBitsToUint(f): # pylint: disable=invalid-name
return struct.unpack('I', struct.pack('f', f))[0]
def intBitsToFloat(i): # pylint: disable=invalid-name
return struct.unpack('f', struct.pack('i', i))[0]
def uintBitsToFloat(u): # pylint: disable=invalid-name
return struct.unpack('f', struct.pack('I', u))[0]
def neg_abs(num):
return neg(abs(num))
def vec4(f):
return [f, f, f, f]
# pylint: disable=bad-whitespace
TEST_DATA = {
# Interesting floating-point inputs
'mixed': (2.0, 9.5, -4.5, -25.0),
'0.0': vec4( 0.0), # int 0
'-0.0': vec4(-0.0), # INT_MIN
'1.0': vec4( 1.0),
'-1.0': vec4(-1.0),
'normalized smallest': vec4( 1.1754944e-38),
'normalized smallest negative': vec4(-1.1754944e-38),
'normalized largest': vec4( 3.4028235e+38),
'normalized largest negative': vec4(-3.4028235e+38),
# Don't test +inf or -inf, since we don't have a way to pass them via
# shader_runner [test] sections. Don't test NaN, since it has many
# representations. Don't test subnormal values, since hardware might
# flush them to zero.
}
# pylint: enable=bad-whitespace
# in_func: Function to convert floating-point data in test_data (above) into
# input (given) data to pass the shader.
# out_func: Function to convert floating-point data in test_data (above) into
# output (expected) data to pass the shader.
FUNCS = {
'floatBitsToInt': {
'in_func': lambda x: x,
'out_func': floatBitsToInt,
'input': 'vec4',
'output': 'ivec4'
},
'floatBitsToUint': {
'in_func': lambda x: x,
'out_func': floatBitsToUint,
'input': 'vec4',
'output': 'uvec4'
},
'intBitsToFloat': {
'in_func': floatBitsToInt,
'out_func': intBitsToFloat,
'input': 'ivec4',
'output': 'vec4'
},
'uintBitsToFloat': {
'in_func': floatBitsToUint,
'out_func': uintBitsToFloat,
'input': 'uvec4',
'output': 'vec4'
}
}
MODIFIER_FUNCS = {
'': lambda x: x,
'abs': abs,
'neg': neg,
'neg_abs': neg_abs,
}
REQUIREMENTS = {
'ARB_shader_bit_encoding': {
'version': '1.30',
'extension': 'GL_ARB_shader_bit_encoding'
},
'ARB_gpu_shader5': {
'version': '1.50',
'extension': 'GL_ARB_gpu_shader5'
},
'glsl-3.30': {
'version': '3.30',
'extension': ''
}
}
def main():
"""main function."""
# pylint: disable=line-too-long
for api, requirement in six.iteritems(REQUIREMENTS):
version = requirement['version']
extensions = [requirement['extension']] if requirement['extension'] else []
dirname = os.path.join('spec', api.lower(), 'execution',
'built-in-functions')
utils.safe_makedirs(dirname)
for func, attrib in six.iteritems(FUNCS):
for execution_stage in ('vs', 'fs'):
for in_modifier_func, modifier_func in six.iteritems(MODIFIER_FUNCS):
# Modifying the sign of an unsigned number doesn't make sense.
if func == 'uintBitsToFloat' and in_modifier_func != '':
continue
modifier_name = '-' + in_modifier_func if in_modifier_func != '' else ''
filename = os.path.join(
dirname,
"{0}-{1}{2}.shader_test".format(execution_stage, func,
modifier_name))
print(filename)
if in_modifier_func == 'neg':
in_modifier_func = '-'
elif in_modifier_func == 'neg_abs':
in_modifier_func = '-abs'
with open(filename, 'w') as f:
f.write(TEMPLATE.render_unicode(
version=version,
extensions=extensions,
execution_stage=execution_stage,
func=func,
modifier_func=modifier_func,
in_modifier_func=in_modifier_func,
in_func=attrib['in_func'],
out_func=attrib['out_func'],
input_type=attrib['input'],
output_type=attrib['output'],
test_data=TEST_DATA))
if __name__ == '__main__':
main()
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