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import ctypes as ct |
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from ctypes.util import find_library |
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import platform |
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osName = platform.system() |
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7
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def define_function(libName, name, returnType, params): |
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'''Helper function to help in binding functions''' |
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if osName == "Windows": |
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function = ct.WINFUNCTYPE(returnType, *params) |
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lib = ct.WinDLL(libName) |
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elif osName == "Darwin" or osName == "Linux": |
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function = ct.FUNCTYPE(returnType, *params) |
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lib = ct.CDLL(find_library(libName)) |
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address = getattr(lib, name) |
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new_func = ct.cast(address, function) |
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return new_func |
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if osName == "Windows": |
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glGetProcAddress = define_function('opengl32', 'wglGetProcAddress', |
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ct.POINTER(ct.c_int), (ct.c_char_p,)) |
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elif osName in ('Linux', 'Darwin', 'Windows'): |
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from sdl2 import SDL_GL_GetProcAddress |
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glGetProcAddress = SDL_GL_GetProcAddress |
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class _BindGL(object): |
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def __init__(self): |
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self.osName = platform.system() |
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if self.osName == 'Linux': |
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libFound = find_library('GL') |
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self.lib = ct.CDLL(libFound) |
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self.funcType = ct.CFUNCTYPE |
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elif self.osName == 'Windows': |
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libFound = find_library('opengl32') |
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self.lib = ct.WinDLL(libFound) |
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self.funcType = ct.WINFUNCTYPE |
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elif self.osName == 'Darwin': # Mac OS X |
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libraryPath = '/System/Library/Frameworks/OpenGL.framework' |
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libFound = find_library(libraryPath) |
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self.lib = ct.CDLL(libFound) |
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self.funcType = ct.CFUNCTYPE |
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def gl_func(self, name, returnType, paramTypes): |
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''' Define and load an opengl function ''' |
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function = self.funcType(returnType, *paramTypes) |
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try: |
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address = getattr(self.lib, name) |
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except AttributeError: |
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name = name.encode(encoding='UTF-8') |
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address = glGetProcAddress(name) |
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return ct.cast(address, function) |
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60
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61
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_glbind = _BindGL() |
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gl_func = _glbind.gl_func |
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64
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__all__ = ['gl_func', 'define_function'] |
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explosiveduck /
ed2d
