0,0 → 1,221 |
#!/usr/bin/python2 |
# coding=utf-8 |
# -*- Mode: Python; py-indent-offset: 4 -*- |
# |
# Copyright © 2012 Intel Corporation |
# |
# Based on code by Kristian Høgsberg <krh@bitplanet.net>, |
# extracted from mesa/main/get.c |
# |
# 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 |
# on the rights to use, copy, modify, merge, publish, distribute, sub |
# license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
# IBM AND/OR ITS SUPPLIERS 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. |
|
# Generate a C header file containing hash tables of glGet parameter |
# names for each GL API. The generated file is to be included by glGet.c |
|
import os, sys, imp, getopt |
from collections import defaultdict |
import get_hash_params |
|
cur_dir = os.path.dirname(sys.argv[0]) |
param_desc_file = "%s/get_hash_params.py" % cur_dir |
|
GLAPI = "%s/../../mapi/glapi/gen" % cur_dir |
sys.path.append(GLAPI) |
import gl_XML |
|
prime_factor = 89 |
prime_step = 281 |
hash_table_size = 1024 |
|
gl_apis=set(["GL", "GL_CORE", "GLES", "GLES2", "GLES3"]) |
|
def print_header(): |
print "typedef const unsigned short table_t[%d];\n" % (hash_table_size) |
print "static const int prime_factor = %d, prime_step = %d;\n" % \ |
(prime_factor, prime_step) |
|
def print_params(params): |
print "static const struct value_desc values[] = {" |
for p in params: |
print " { %s, %s }," % (p[0], p[1]) |
|
print "};\n" |
|
def api_name(api): |
return "API_OPEN%s" % api |
|
# This must match gl_api enum in src/mesa/main/mtypes.h |
api_enum = [ |
'GL', |
'GLES', |
'GLES2', |
'GL_CORE', |
'GLES3', # Not in gl_api enum in mtypes.h |
] |
|
def api_index(api): |
return api_enum.index(api) |
|
def table_name(api): |
return "table_" + api_name(api) |
|
def print_table(api, table): |
print "static table_t %s = {" % (table_name(api)) |
|
# convert sparse (index, value) table into a dense table |
dense_table = [0] * hash_table_size |
for i, v in table: |
dense_table[i] = v |
|
row_size = 4 |
for i in range(0, hash_table_size, row_size): |
row = dense_table[i : i + row_size] |
idx_val = ["%4d" % v for v in row] |
print " " * 4 + ", ".join(idx_val) + "," |
|
print "};\n" |
|
def print_tables(tables): |
for table in tables: |
print_table(table["apis"][0], table["indices"]) |
|
dense_tables = ['NULL'] * len(api_enum) |
for table in tables: |
tname = table_name(table["apis"][0]) |
for api in table["apis"]: |
i = api_index(api) |
dense_tables[i] = "&%s" % (tname) |
|
print "static table_t *table_set[] = {" |
for expr in dense_tables: |
print " %s," % expr |
print "};\n" |
|
print "#define table(api) (*table_set[api])" |
|
# Merge tables with matching parameter lists (i.e. GL and GL_CORE) |
def merge_tables(tables): |
merged_tables = [] |
for api, indices in sorted(tables.items()): |
matching_table = filter(lambda mt:mt["indices"] == indices, |
merged_tables) |
if matching_table: |
matching_table[0]["apis"].append(api) |
else: |
merged_tables.append({"apis": [api], "indices": indices}) |
|
return merged_tables |
|
def add_to_hash_table(table, hash_val, value): |
while True: |
index = hash_val & (hash_table_size - 1) |
if index not in table: |
table[index] = value |
break |
hash_val += prime_step |
|
def die(msg): |
sys.stderr.write("%s: %s\n" % (program, msg)) |
exit(1) |
|
program = os.path.basename(sys.argv[0]) |
|
def generate_hash_tables(enum_list, enabled_apis, param_descriptors): |
tables = defaultdict(lambda:{}) |
|
# the first entry should be invalid, so that get.c:find_value can use |
# its index for the 'enum not found' condition. |
params = [[0, ""]] |
|
for param_block in param_descriptors: |
if set(["apis", "params"]) != set(param_block): |
die("missing fields (%s) in param descriptor file (%s)" % |
(", ".join(set(["apis", "params"]) - set(param_block)), |
param_desc_file)) |
|
valid_apis = set(param_block["apis"]) |
if valid_apis - gl_apis: |
die("unknown API(s) in param descriptor file (%s): %s\n" % |
(param_desc_file, ",".join(valid_apis - gl_apis))) |
|
if not (valid_apis & enabled_apis): |
continue |
|
valid_apis &= enabled_apis |
|
for param in param_block["params"]: |
enum_name = param[0] |
enum_val = enum_list[enum_name].value |
hash_val = enum_val * prime_factor |
|
for api in valid_apis: |
add_to_hash_table(tables[api], hash_val, len(params)) |
# Also add GLES2 items to the GLES3 hash table |
if api == "GLES2": |
add_to_hash_table(tables["GLES3"], hash_val, len(params)) |
|
params.append(["GL_" + enum_name, param[1]]) |
|
sorted_tables={} |
for api, indices in tables.items(): |
sorted_tables[api] = sorted(indices.items()) |
|
return params, merge_tables(sorted_tables) |
|
|
def show_usage(): |
sys.stderr.write( |
"""Usage: %s [OPTIONS] |
-f <file> specify GL API XML file |
""" % (program)) |
exit(1) |
|
if __name__ == '__main__': |
try: |
(opts, args) = getopt.getopt(sys.argv[1:], "f:") |
except Exception,e: |
show_usage() |
|
if len(args) != 0: |
show_usage() |
|
api_desc_file = "" |
|
for opt_name, opt_val in opts: |
if opt_name == "-f": |
api_desc_file = opt_val |
|
if not api_desc_file: |
die("missing descriptor file (-f)\n") |
|
# generate the code for all APIs |
enabled_apis = set(["GLES", "GLES2", "GLES3", "GL", "GL_CORE"]) |
|
try: |
api_desc = gl_XML.parse_GL_API(api_desc_file) |
except Exception: |
die("couldn't parse API specification file %s\n" % api_desc_file) |
|
(params, hash_tables) = generate_hash_tables(api_desc.enums_by_name, |
enabled_apis, get_hash_params.descriptor) |
|
print_header() |
print_params(params) |
print_tables(hash_tables) |