def _update(self):
""" Actual upload of data to GPU memory """
log.debug("GPU: Updating %s" % self.name)
# Check active status (mandatory)
# if not self._active:
# raise RuntimeError("Attribute variable is not active")
# if self._data is None:
# raise RuntimeError("Attribute variable data is not set")
# Generic vertex attribute (all vertices receive the same value)
if self._generic:
if self._handle >= 0:
gl.glDisableVertexAttribArray(self._handle)
self._afunction(self._handle, *self._data)
# Regular vertex buffer
elif self.handle >= 0:
#if self._need_update:
# self.data._update()
# self._need_update = False
# Get relevant information from gl_typeinfo
size, gtype, dtype = gl_typeinfo[self._gtype]
stride = self.data.stride
# Make offset a pointer, or it will be interpreted as a small array
offset = ctypes.c_void_p(self.data.offset)
gl.glEnableVertexAttribArray(self.handle)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.data.handle)
gl.glVertexAttribPointer(self.handle, size, gtype, gl.GL_FALSE,
stride, offset)
def _update(self):
""" Actual upload of data to GPU memory """
log.debug("GPU: Updating %s" % self.name)
# Check active status (mandatory)
# if not self._active:
# raise RuntimeError("Attribute variable is not active")
# if self._data is None:
# raise RuntimeError("Attribute variable data is not set")
# Generic vertex attribute (all vertices receive the same value)
if self._generic:
if self._handle >= 0:
gl.glDisableVertexAttribArray(self._handle)
self._afunction(self._handle, *self._data)
# Regular vertex buffer
elif self.handle >= 0:
#if self._need_update:
# self.data._update()
# self._need_update = False
# Get relevant information from gl_typeinfo
size, gtype, dtype = gl_typeinfo[self._gtype]
stride = self.data.stride
# Make offset a pointer, or it will be interpreted as a small array
offset = ctypes.c_void_p(self.data.offset)
gl.glEnableVertexAttribArray(self.handle)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.data.handle)
gl.glVertexAttribPointer(self.handle, size, gtype, gl.GL_FALSE, stride, offset)
def _deactivate(self):
if isinstance(self.data, VertexBuffer):
self.data.deactivate()
if self.handle >= 0:
gl.glDisableVertexAttribArray(self.handle)
elif isinstance(self.data, VertexArray):
self.data.deactivate()
def _deactivate(self):
if isinstance(self.data,VertexBuffer):
self.data.deactivate()
if self.handle > 0:
gl.glDisableVertexAttribArray(self.handle)
elif isinstance(self.data,VertexArray):
self.data.deactivate()
