glxtrace.py

##########################################################################
#
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"""GLX tracing generator."""


from stdapi import API
from glapi import glapi
from glxapi import glxapi
from gltrace import GlTracer
from dispatch import function_pointer_type, function_pointer_value


class GlxTracer(GlTracer):

    def get_function_address(self, function):
        return '__%s' % (function.name,)

    def wrap_ret(self, function, instance):
        if function.name in ("glXGetProcAddress", "glXGetProcAddressARB"):
            print '    %s = __unwrap_proc_addr(procName, %s);' % (instance, instance)


if __name__ == '__main__':
    print
    print '#include <stdlib.h>'
    print '#include <string.h>'
    print '#include <dlfcn.h>'
    print
    print '#include "trace_write.hpp"'
    print
    print '#include "glproc.hpp"'
    print '#include "glsize.hpp"'
    print
    print 'extern "C" {'
    print
    print 'static __GLXextFuncPtr __unwrap_proc_addr(const GLubyte * procName, __GLXextFuncPtr procPtr);'
    print

    api = API()
    api.add_api(glxapi)
    api.add_api(glapi)
    tracer = GlxTracer()
    tracer.trace_api(api)

    print 'static __GLXextFuncPtr __unwrap_proc_addr(const GLubyte * procName, __GLXextFuncPtr procPtr) {'
    print '    if (!procPtr) {'
    print '        return procPtr;'
    print '    }'
    for f in api.functions:
        ptype = function_pointer_type(f)
        pvalue = function_pointer_value(f)
        print '    if(!strcmp("%s", (const char *)procName)) {' % f.name
        print '        %s = (%s)procPtr;' % (pvalue, ptype)
        print '        return (__GLXextFuncPtr)&%s;' % (f.name,)
        print '    }'
    print '    return procPtr;'
    print '}'
    print
    print '} /* extern "C" */'