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#!/usr/bin/env python2
# coding=utf-8
# Copyright (c) 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 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
import os
import sys
import errno
import ast
import random
import random_ubo
from random_ubo import struct_types
def remove_empty_structure(s, do_remove = True):
global struct_types
removed = [s]
for x in struct_types:
# Delete the empty structure at the end, and the structure
# cannot contain itself.
if s == x:
continue
# A previous caller may be in the process of deleting this structure
# type, so just skip it for now.
if len(struct_types[x]) == 0:
continue
i = 0
while i < len(struct_types[x]):
field_type, field_name = struct_types[x][i]
if random_ubo.isarray(field_type):
field_type = random_ubo.array_base_type(field_type)
if field_type == s:
del struct_types[x][i]
else:
i = i + 1
# Now x could be empty, so possibly remove it too.
if len(struct_types[x]) == 0:
removed.extend(remove_empty_structure(x, False))
if do_remove:
for x in removed:
del struct_types[x]
return removed
def diminish_array_type(fields, i):
field_type, field_name = fields[i]
if not random_ubo.isarray(field_type):
return False
if random_ubo.array_elements(field_type) == 1:
smaller_type = random_ubo.array_base_type(field_type)
else:
smaller_type = random_ubo.array_base_type(field_type) + "[1]"
print("{} => {}".format(field_type, smaller_type))
fields[i] = (smaller_type, field_name)
return True
def remove_random_field(blocks):
global struct_types
potential_kill_list = []
for b in blocks:
potential_kill_list.extend([(b[0], i)
for i in xrange(len(b[4]))])
for s in struct_types:
potential_kill_list.extend([(s, i)
for i in xrange(len(struct_types[s]))])
if len(potential_kill_list) == 0:
return False
owner, i = random.choice(potential_kill_list)
print("{} field index {}:".format(owner, i), end="")
if owner in struct_types:
if diminish_array_type(struct_types[owner], i):
return True
print("remove {}".format(struct_types[owner][i]))
del struct_types[owner][i]
if len(struct_types[owner]) == 0:
removed = remove_empty_structure(owner)
# Update the UBOs to note that some structures are gone.
if len(removed) != 0:
for (block_name,
instance_name,
global_layout,
block_layout,
fields,
field_layouts) in blocks:
j = 0
while j < len(fields):
field_type, field_name = fields[j]
if random_ubo.isarray(field_type):
field_type = random_ubo.array_base_type(field_type)
if field_type in removed:
del fields[j]
del field_layouts[j]
else:
j = j + 1
else:
for b in blocks:
if b[0] == owner:
if not diminish_array_type(b[4], i):
print("remove {}".format(b[4][i]))
# Delete the field
del b[4][i]
# Delete the layout
del b[5][i]
# Remove any potentially empty UBOs
i = 0
while i < len(blocks):
if len(blocks[i][4]) == 0:
del blocks[i]
else:
i = i + 1
return True
if len(sys.argv) <= 2:
print("Usage: {} input output".format(sys.argv[0]))
sys.exit(1)
file_in = open(sys.argv[1], "r", 0)
file_out = open(sys.argv[2], "w", 0)
glsl_version = None
extensions = None
packing = None
blocks = []
for line in file_in:
if line[0] != '#':
continue
if line.startswith("# GLSL"):
glsl_version = int(line.split(" ")[2])
elif line.startswith("# EXTENSIONS"):
extensions = ast.literal_eval(line[12:].strip())
elif line.startswith("# PACKING"):
packing_str = line.split(" ")[2].strip()
if packing_str == "shared":
packing = random_ubo.shared_packing_rules()
elif packing_str == "std140":
packing = random_ubo.std140_packing_rules()
else:
print("Invalid packing string '{}'.".format(packing_str))
sys.exit(1)
elif line.startswith("# STRUCT"):
struct_name, struct_fields = ast.literal_eval(line[8:].strip())
struct_types[struct_name] = struct_fields
elif line.startswith("# UBO"):
blocks.append(ast.literal_eval(line[5:].strip()))
elif line.startswith("# DATA END"):
break
else:
pass
file_in.close()
if not remove_random_field(blocks):
sys.exit(1)
if len(blocks) == 0:
sys.exit(1)
file_out.write(random_ubo.emit_shader_test(
blocks,
packing,
glsl_version,
extensions))
file_out.write("\n")
file_out.close()
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