84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
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# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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# Copyright (c) 2008-2021 pyglet contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of pyglet nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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import pyglet
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from pyglet.gl import GLuint, glGenVertexArrays, glDeleteVertexArrays, glBindVertexArray
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__all__ = ['VertexArray']
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class VertexArray:
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"""OpenGL Vertex Array Object"""
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def __init__(self):
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"""Create an instance of a Vertex Array object."""
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self._context = pyglet.gl.current_context
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self._id = GLuint()
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glGenVertexArrays(1, self._id)
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@property
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def id(self):
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return self._id.value
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def bind(self):
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glBindVertexArray(self._id)
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@staticmethod
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def unbind():
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glBindVertexArray(0)
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def delete(self):
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try:
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glDeleteVertexArrays(1, self._id)
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except Exception:
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pass
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__enter__ = bind
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def __exit__(self, *_):
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glBindVertexArray(0)
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def __del__(self):
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try:
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self._context.delete_vao(self.id)
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# Python interpreter is shutting down:
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except ImportError:
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pass
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def __repr__(self):
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return "{}(id={})".format(self.__class__.__name__, self._id.value)
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