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##########################################################################
#
# Copyright 2011 VMware, Inc.
# All Rights Reserved.
#
# 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.
#
##########################################################################/
"""CGL tracing generator."""
from gltrace import GlTracer
from specs.stdapi import Module, API
from specs.glapi import glapi
from specs.cglapi import cglapi
class CglTracer(GlTracer):
def isFunctionPublic(self, function):
# all OpenGL symbols are visible on MacOSX
return True
def traceFunctionImplBody(self, function):
if function.name == 'CGLReleaseContext':
# Unlike other GL APIs like EGL or GLX, CGL will make the context
# not current if it's the current context.
print(' if (_CGLGetContextRetainCount(ctx) == 1) {')
print(' if (gltrace::releaseContext((uintptr_t)ctx)) {')
print(' if (_CGLGetCurrentContext() == ctx) {')
print(' gltrace::clearContext();')
print(' }')
print(' }')
print(' }')
if function.name == 'CGLDestroyContext':
# The same rule applies here about the as for CGLReleaseContext.
print(' if (gltrace::releaseContext((uintptr_t)ctx)) {')
print(' if (_CGLGetCurrentContext() == ctx) {')
print(' gltrace::clearContext();')
print(' }')
print(' }')
GlTracer.traceFunctionImplBody(self, function)
if function.name == 'CGLCreateContext':
print(' if (_result == kCGLNoError) {')
print(' gltrace::createContext((uintptr_t)*ctx, (uintptr_t)share);')
print(' }')
if function.name == 'CGLSetCurrentContext':
print(' if (_result == kCGLNoError) {')
print(' if (ctx != NULL) {')
print(' gltrace::setContext((uintptr_t)ctx);')
print(' } else {')
print(' gltrace::clearContext();')
print(' }')
print(' }')
if function.name == 'CGLRetainContext':
print(' gltrace::retainContext((uintptr_t)ctx);')
if __name__ == '__main__':
print()
print('#include <stdlib.h>')
print('#include <string.h>')
print()
print('#include "trace_writer_local.hpp"')
print()
print('// To validate our prototypes')
print('#define GL_GLEXT_PROTOTYPES')
print()
print('#include "glproc.hpp"')
print('#include "glsize.hpp"')
print()
module = Module()
module.mergeModule(cglapi)
module.mergeModule(glapi)
api = API()
api.addModule(module)
tracer = CglTracer()
tracer.traceApi(api)
print(r'''
PUBLIC
void * gll_noop = 0;
__attribute__((constructor))
static void
_init(void) {
/*
* XXX: Setting DYLD_IMAGE_SUFFIX to anything (even an empty string)
* changes dlopen behavior causing our trick of symlinking a temporary file
* to the real OpenGL framework to stop working, leading to infinite
* recursion.
*/
if (getenv("DYLD_IMAGE_SUFFIX")) {
os::log("error: tracing with DYLD_IMAGE_SUFFIX not supported.\n");
os::abort();
}
/*
* XXX: Temporary workaround for
* https://github.com/apitrace/apitrace/issues/278#issuecomment-46889575
* until we have a better way of intercepting applications that
* dlopen("libGL.dylib") directly.
*/
setenv("SDL_OPENGL_LIBRARY", "/System/Library/Frameworks/OpenGL.framework/OpenGL", 1);
}
''')
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