def set_current(self):
if not self.canvas:
raise RuntimeError('Canvas has not been attached')
# XXX not per-thread
gl.current_context = self
# XXX
gl_info.set_active_context()
glu_info.set_active_context()
# Implement workarounds
if not self._info:
self._info = gl_info.GLInfo()
self._info.set_active_context()
for attr, check in self._workaround_checks:
setattr(self, attr, check(self._info))
# Release textures on this context scheduled for deletion
if self.object_space._doomed_textures:
textures = self.object_space._doomed_textures
textures = (gl.GLuint * len(textures))(*textures)
gl.glDeleteTextures(len(textures), textures)
self.object_space._doomed_textures = []
# Release buffers on this context scheduled for deletion
if self.object_space._doomed_buffers:
buffers = self.object_space._doomed_buffers
buffers = (gl.GLuint * len(buffers))(*buffers)
gl.glDeleteBuffers(len(buffers), buffers)
self.object_space._doomed_buffers = []
def delete_texture(self, texture_id):
'''Safely delete a texture belonging to this context.
Usually, the texture is released immediately using
``glDeleteTextures``, however if another context that does not share
this context's object space is currently active, the deletion will
be deferred until an appropriate context is activated.
:Parameters:
`texture_id` : int
The OpenGL name of the texture to delete.
'''
if self.object_space is gl.current_context.object_space:
id = gl.GLuint(texture_id)
gl.glDeleteTextures(1, id)
else:
self.object_space._doomed_textures.append(texture_id)
