def _delete(shaders_id, prog_id):
# Check to see if the context was already cleaned up from program
# shut down. If so, we don't need to delete the shaders.
if gl.current_context is None:
return
for shader_id in shaders_id:
gl.glDetachShader(prog_id, shader_id)
gl.glDeleteProgram(prog_id)
def delete_shader_program(self, program_id):
"""Safely delete a Shader Program belonging to this context.
This method behaves similarly to `delete_texture`, though for
``glDeleteProgram`` instead of ``glDeleteTextures``.
:Parameters:
`program_id` : int
The OpenGL name of the Shader Program to delete.
.. versionadded:: 2.0
"""
if gl.current_context is self:
gl.glDeleteProgram(program_id)
else:
self.object_space.doomed_shader_programs.append(program_id)
def compile(self):
if self.handle is not None:
glDeleteProgram(self.handle)
self.handle = glCreateProgram()
if len(self.vertex_shader_name) > 0:
with open(self.vertex_shader_name) as f:
vertex_source = f.readlines()
self.create_shader(vertex_source, GL_VERTEX_SHADER)
if len(self.fragment_shader_name) > 0:
with open(self.fragment_shader_name) as f:
fragment_source = f.readlines()
self.create_shader(fragment_source, GL_FRAGMENT_SHADER)
self.link()
def _invalidate_device_objects(self):
if self._vao_handle.value > -1:
gl.glDeleteVertexArrays(1, byref(self._vao_handle))
if self._vbo_handle.value > -1:
gl.glDeleteBuffers(1, byref(self._vbo_handle))
if self._elements_handle.value > -1:
gl.glDeleteBuffers(1, byref(self._elements_handle))
self._vao_handle = self._vbo_handle = self._elements_handle = 0
gl.glDeleteProgram(self._shader_handle)
self._shader_handle = 0
if self._font_texture.value > -1:
gl.glDeleteTextures(1, byref(self._font_texture))
self.io.fonts.texture_id = 0
self._font_texture = 0
def test_freeing(self):
" Test if programs are freed correctly "
prog = ShaderProgram.new_program()
vert, frag = self.get_objects()
prog.attach(vert, frag)
# Warning, borrowed_obj do not own the underlying shader so it will not be freed automatically
borrowed_prog = ShaderProgram(glCreateProgram(), owned=False)
pid = prog.pid
pid2 = borrowed_prog.pid
del prog
del borrowed_prog
gc.collect()
self.assertEqual(glIsProgram(pid), GL_FALSE, 'Program was not freed')
self.assertEqual(glIsProgram(pid2), GL_TRUE, 'Program was freed')
self.assertFalse(vert.valid(), 'vert was not freed')
self.assertFalse(frag.valid(), 'frag was not freed')
# Free the program object
glDeleteProgram(pid2)
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()
if not self._info:
self._info = gl_info.GLInfo()
self._info.set_active_context()
# Release Textures, Buffers, and VAOs on this context scheduled for
# deletion. Note that the garbage collector may introduce a race
# condition, so operate on a copy, and clear the list afterwards.
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.clear()
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.clear()
if self.object_space.doomed_vaos:
vaos = self.object_space.doomed_vaos[:]
vaos = (gl.GLuint * len(vaos))(*vaos)
gl.glDeleteVertexArrays(len(vaos), vaos)
self.object_space.doomed_vaos.clear()
if self.object_space.doomed_shader_programs:
for program_id in self.object_space.doomed_shader_programs:
gl.glDeleteProgram(program_id)
self.object_space.doomed_shader_programs.clear()
def __del__(self): # don't forget to delete the program when the Shader object is deleted! gl.glDeleteProgram(self.program)
def __del__(self):
if self.owned and self.valid():
self.detach(*self.shaders(
)) # Detach and mark for deletion all attahed shader object
glDeleteProgram(self.pid)
def release(self):
if self.prog_id != 0:
gl.glDeleteProgram(self.prog_id)
self.prog_id = 0
def __del__(self):
self.disable()
gl.glDeleteProgram(self.handle)
def __del__(self):
gl.glDeleteProgram(self.program)
def delete(self):
"""Delete the current shader."""
gl.glDeleteProgram(self._pid)
gl.glDeleteShader(self._fid)
gl.glDeleteShader(self._vid)
def __del__(self):
gl.glDeleteProgram(self.__value)
