| """Abstraction for the platform-specific code in PyOpenGL |
| |
| Each supported platform has a module which provides the |
| specific functionality required to support the base OpenGL |
| functionality on that platform. These modules are |
| registered using plugins in the: |
| |
| OpenGL.plugin.PlatformPlugin |
| |
| objects. To support a new platform you'll need to create |
| a new PlatformPlugin instance *before* you import |
| OpenGL.platform . Once you have a working platform |
| module, please consider contributing it back to the project. |
| |
| See baseplatform.BasePlatform for the core functionality |
| of a platform implementation. See the various platform |
| specific modules for examples to use when porting. |
| """ |
| import os, sys |
| from OpenGL.plugins import PlatformPlugin |
|
|
| def _load( ): |
| """Load the os.name plugin for the platform functionality""" |
| key = (os.environ.get( 'PYOPENGL_PLATFORM'), sys.platform,os.name) |
| plugin = PlatformPlugin.match( key ) |
| plugin_class = plugin.load() |
| plugin.loaded = True |
| |
| plugin = plugin_class() |
|
|
| |
| plugin.install(globals()) |
| return plugin |
|
|
| _load() |
|
|
| def types(resultType,*argTypes): |
| """Decorator to add returnType, argTypes and argNames to a function""" |
| def add_types( function ): |
| """Adds the given metadata to the function, introspects var names from declaration""" |
| function.resultType = resultType |
| function.argTypes = argTypes |
| if hasattr( function, 'func_code' ): |
| function.argNames = function.func_code.co_varnames |
| else: |
| function.argNames = function.__code__.co_varnames |
| return function |
| return add_types |
|
|
| def unpack_constants( constants, namespace ): |
| """Create constants and add to the namespace""" |
| from OpenGL.constant import Constant |
| for line in constants.splitlines(): |
| if line and line.split(): |
| name,value = line.split() |
| namespace[name] = Constant( name, int(value,16) ) |
|
|
| def createFunction( function, dll,extension,deprecated=False, error_checker=None ): |
| """Allows the more compact declaration format to use the old-style constructor""" |
| return nullFunction( |
| function.__name__, |
| dll or PLATFORM.GL, |
| resultType = function.resultType, |
| argTypes = function.argTypes, |
| doc = None, argNames = function.argNames, |
| extension = extension, |
| deprecated = deprecated, |
| module = function.__module__, |
| error_checker = error_checker, |
| ) |
|
|
