326 lines
11 KiB
Python
326 lines
11 KiB
Python
#!/usr/bin/python
|
|
#
|
|
# Comedy python script to generate cdecl to stdcall wrappers for GL functions
|
|
#
|
|
# This is designed to operate on OpenGL spec files from
|
|
# http://www.opengl.org/registry/api/
|
|
#
|
|
#
|
|
# Copyright (c) Jon TURNEY 2009
|
|
#
|
|
# 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 ABOVE LISTED COPYRIGHT HOLDER(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.
|
|
#
|
|
# Except as contained in this notice, the name(s) of the above copyright
|
|
# holders shall not be used in advertising or otherwise to promote the sale,
|
|
# use or other dealings in this Software without prior written authorization.
|
|
#
|
|
|
|
import sys
|
|
import re
|
|
import getopt
|
|
|
|
dispatchheader = ''
|
|
prefix = 'gl'
|
|
preresolve = False
|
|
staticwrappers = False
|
|
|
|
opts, args = getopt.getopt(sys.argv[1:], "", ['spec=', 'typemap=', 'dispatch-header=', 'prefix=', 'preresolve', 'staticwrappers' ])
|
|
|
|
for o,a in opts:
|
|
if o == '--typemap' :
|
|
typemapfile = a
|
|
elif o == '--dispatch-header' :
|
|
dispatchheader = a
|
|
elif o == '--spec' :
|
|
specfile = a
|
|
elif o == '--prefix' :
|
|
prefix = a
|
|
elif o == '--preresolve' :
|
|
preresolve = True
|
|
elif o == '--staticwrappers' :
|
|
staticwrappers = True
|
|
|
|
#
|
|
# look for all the SET_ macros in dispatch.h, this is the set of functions
|
|
# we need to generate
|
|
#
|
|
|
|
dispatch = {}
|
|
|
|
if dispatchheader :
|
|
fh = open(dispatchheader)
|
|
dispatchh = fh.readlines()
|
|
|
|
dispatch_regex = re.compile(r'^SET_(\S*)\(')
|
|
|
|
for line in dispatchh :
|
|
line = line.strip()
|
|
m1 = dispatch_regex.search(line)
|
|
|
|
if m1 :
|
|
dispatch[m1.group(1)] = 1
|
|
|
|
del dispatch['by_offset']
|
|
|
|
#
|
|
# read the typemap .tm file
|
|
#
|
|
|
|
typemap = {}
|
|
|
|
fh = open(typemapfile)
|
|
tm = fh.readlines()
|
|
|
|
typemap_regex = re.compile(r'#define\sSET_(\S*)\(')
|
|
|
|
for line in tm :
|
|
# ignore everything after a '#' as a comment
|
|
hash = line.find('#')
|
|
if hash != -1 :
|
|
line = line[:hash-1]
|
|
|
|
# ignore blank lines
|
|
if line.startswith('#') or len(line) == 0 :
|
|
continue
|
|
|
|
l = line.split(',')
|
|
typemap[l[0]] = l[3].strip()
|
|
|
|
# interestingly, * is not a C type
|
|
if typemap['void'] == '*' :
|
|
typemap['void'] = 'void'
|
|
|
|
#
|
|
# crudely parse the .spec file
|
|
#
|
|
|
|
r1 = re.compile(r'\t(\S*)\s+(\S*.*)')
|
|
r2 = re.compile(r'(.*)\((.*)\)')
|
|
r3 = re.compile(r'glWindowPos.*MESA')
|
|
r4 = re.compile(r'gl.*Program(s|)NV')
|
|
r5 = re.compile(r'glGetVertexAttribfvNV')
|
|
|
|
wrappers = {}
|
|
|
|
fh = open(specfile)
|
|
glspec = fh.readlines()
|
|
param_count = 0
|
|
|
|
for line in glspec :
|
|
line = line.rstrip()
|
|
|
|
# ignore everything after a '#' as a comment
|
|
hash = line.find('#')
|
|
if hash != -1 :
|
|
line = line[:hash-1]
|
|
|
|
# ignore blank lines
|
|
if line.startswith('#') or len(line) == 0 :
|
|
continue
|
|
|
|
# lines containing ':' aren't intersting to us
|
|
if line.count(':') != 0 :
|
|
continue
|
|
|
|
# attributes of each function follow the name, indented by a tab
|
|
if not line.startswith('\t') :
|
|
m1 = r2.search(line)
|
|
if m1 :
|
|
function = m1.group(1)
|
|
arglist_use = m1.group(2)
|
|
wrappers[function] = {}
|
|
|
|
# ensure formal parameter names don't collide with reserved names or shadow global declarations
|
|
arglist_use = ',' .join([i.rstrip() + '_' for i in arglist_use.split(",")])
|
|
|
|
wrappers[function]['arglist_use'] = arglist_use
|
|
param_count = 0
|
|
else :
|
|
m1 = r1.search(line)
|
|
if m1 :
|
|
attribute = m1.group(1)
|
|
value = m1.group(2)
|
|
|
|
# make param attributes unique and ordered
|
|
if attribute == 'param' :
|
|
attribute = 'param' + '%02d' % param_count
|
|
param_count += 1
|
|
|
|
wrappers[function][attribute] = value
|
|
|
|
#
|
|
# now emit code
|
|
#
|
|
|
|
print '/* Automatically generated by ' + sys.argv[0] + ' DO NOT EDIT */'
|
|
print '/* from ' + specfile + ' and typemap ' + typemapfile + ' */'
|
|
print ''
|
|
|
|
#
|
|
# if required, emit code for non-lazy function resolving
|
|
#
|
|
|
|
if preresolve :
|
|
for w in sorted(wrappers.keys()) :
|
|
funcname = prefix + w
|
|
print 'RESOLVE_DECL(PFN' + funcname.upper() + 'PROC);'
|
|
|
|
print ''
|
|
print 'void ' + prefix + 'ResolveExtensionProcs(void)'
|
|
print '{'
|
|
|
|
for w in sorted(wrappers.keys()) :
|
|
funcname = prefix + w
|
|
print ' PRERESOLVE(PFN' + funcname.upper() + 'PROC, "' + funcname + '");'
|
|
|
|
print '}\n'
|
|
|
|
#
|
|
# now emit the wrappers
|
|
# for GL 1.0 and 1.1 functions, generate stdcall wrappers which call the function directly
|
|
# for GL 1.2+ functions, generate wrappers which use wglGetProcAddress()
|
|
#
|
|
|
|
for w in sorted(wrappers.keys()) :
|
|
|
|
funcname = prefix + w
|
|
returntype = wrappers[w]['return']
|
|
if returntype != 'void' :
|
|
returntype = typemap[returntype]
|
|
|
|
# Avoid generating wrappers which aren't referenced by the dispatch table
|
|
if dispatchheader and not dispatch.has_key(w) :
|
|
print '/* No wrapper for ' + funcname + ', not in dispatch table */'
|
|
continue
|
|
|
|
# manufacture arglist
|
|
# if no param attributes were found, it should be 'void'
|
|
al = []
|
|
for k in sorted(wrappers[w].keys()) :
|
|
if k.startswith('param') :
|
|
l = wrappers[w][k].split()
|
|
|
|
# ensure formal parameter names don't collide with reserved names or shadow global declarations
|
|
l[0] = l[0] + '_'
|
|
|
|
if l[2] == 'in' :
|
|
if l[3] == 'array' :
|
|
arg = 'const ' + typemap[l[1]] + ' *' + l[0]
|
|
else :
|
|
arg = typemap[l[1]] + ' ' + l[0]
|
|
elif l[2] == 'out' :
|
|
arg = typemap[l[1]] + ' *' + l[0]
|
|
|
|
al.append(arg)
|
|
|
|
if len(al) == 0 :
|
|
arglist = 'void'
|
|
else:
|
|
arglist = ', '.join(al)
|
|
|
|
if wrappers[w]['category'].startswith('VERSION_1_0') or wrappers[w]['category'].startswith('VERSION_1_1') :
|
|
if staticwrappers :
|
|
print 'static',
|
|
print returntype + ' ' + funcname + 'Wrapper(' + arglist + ')'
|
|
print '{'
|
|
print ' if (glxWinDebugSettings.enable' + prefix.upper() + 'callTrace) ErrorF("'+ funcname + '\\n");'
|
|
print ' glWinDirectProcCalls++;'
|
|
if returntype.lower() == 'void' :
|
|
print ' ' + funcname + '(',
|
|
else :
|
|
print ' /* returntype was ' + returntype.lower() + '*/'
|
|
print ' return ' + funcname + '(',
|
|
|
|
if arglist != 'void' :
|
|
print wrappers[w]['arglist_use'],
|
|
|
|
print ');'
|
|
print "}\n"
|
|
else:
|
|
if staticwrappers :
|
|
print 'static',
|
|
print returntype + ' ' + funcname + 'Wrapper(' + arglist + ')'
|
|
print '{'
|
|
|
|
stringname = funcname
|
|
|
|
#
|
|
# special case: Windows OpenGL implementations are far more likely to have GL_ARB_window_pos than GL_MESA_window_pos,
|
|
# so arrange for the wrapper to use the ARB strings to find functions...
|
|
#
|
|
|
|
m2 = r3.search(funcname)
|
|
if m2 :
|
|
stringname = stringname.replace('MESA','ARB')
|
|
|
|
#
|
|
# special case: likewise, implementations are more likely to have GL_ARB_vertex_program than GL_NV_vertex_program,
|
|
# especially if they are not NV implementations, so arrange for the wrapper to use ARB strings to find functions
|
|
#
|
|
|
|
m3 = r4.search(funcname)
|
|
if m3 :
|
|
stringname = stringname.replace('NV','ARB')
|
|
m4 = r5.search(funcname)
|
|
if m4 :
|
|
stringname = stringname.replace('NV','ARB')
|
|
|
|
pfntypename = 'PFN' + funcname.upper() + 'PROC'
|
|
|
|
if returntype.lower() == 'void' :
|
|
print ' RESOLVE(' + pfntypename + ', "' + stringname + '");'
|
|
print ' if (glxWinDebugSettings.enable' + prefix.upper() + 'callTrace) ErrorF("'+ funcname + '\\n");'
|
|
print ' RESOLVED_PROC(' + pfntypename + ')(',
|
|
else :
|
|
print ' RESOLVE_RET(' + pfntypename + ', "' + stringname + '", FALSE);'
|
|
print ' if (glxWinDebugSettings.enable' + prefix.upper() + 'callTrace) ErrorF("'+ funcname + '\\n");'
|
|
print ' return RESOLVED_PROC(' + pfntypename + ')(',
|
|
|
|
if arglist != 'void' :
|
|
print wrappers[w]['arglist_use'],
|
|
|
|
print ');'
|
|
print "}\n"
|
|
|
|
|
|
# generate function to setup the dispatch table, which sets each
|
|
# dispatch table entry to point to it's wrapper function
|
|
# (assuming we were able to make one)
|
|
|
|
if dispatchheader :
|
|
print 'void glWinSetupDispatchTable(void)'
|
|
print '{'
|
|
print ' static struct _glapi_table *disp = NULL;'
|
|
print ''
|
|
print ' if (!disp)'
|
|
print ' {'
|
|
print ' disp = calloc(sizeof(void *), _glapi_get_dispatch_table_size());'
|
|
print ' assert(disp);'
|
|
|
|
for d in sorted(dispatch.keys()) :
|
|
if wrappers.has_key(d) :
|
|
print ' SET_'+ d + '(disp, (void *)' + prefix + d + 'Wrapper);'
|
|
else :
|
|
print '#warning No wrapper for ' + prefix + d + ' !'
|
|
|
|
print ' }'
|
|
print ''
|
|
print ' _glapi_set_dispatch(disp);'
|
|
print '}'
|