def __setup_data_buffer(self):
data_ptr = ct.cast( np.ctypeslib.as_ctypes(self.__data),
ct.POINTER(ct.c_float) )
self.__data_buffer = util.buffer()
gl.glBindBuffer(gl.GL_TEXTURE_BUFFER, self.__data_buffer.value)
gl.glBufferData(gl.GL_TEXTURE_BUFFER,
ct.sizeof(ct.c_float)*self.__data.size,
data_ptr,
gl.GL_STATIC_DRAW)
if self.__data_texture is None:
self.__data_texture = util.texture()
gl.glActiveTexture(gl.GL_TEXTURE0)
gl.glBindTexture(gl.GL_TEXTURE_BUFFER, self.__data_texture.value)
gl.glTexBuffer(gl.GL_TEXTURE_BUFFER, gl.GL_R32F,
self.__data_buffer.value)
self.__data_altered = False
def __setup_geometry_buffer(self):
data_buffer = ((ct.c_float*3)*36)()
# {{{ vertex data for cube
v0 = ( .5, .5, .5 )
v1 = ( -.5, .5, .5 )
v2 = ( -.5, -.5, .5 )
v3 = ( .5, -.5, .5 )
v4 = ( .5, .5, -.5 )
v5 = ( -.5, .5, -.5 )
v6 = ( -.5, -.5, -.5 )
v7 = ( .5, -.5, -.5 )
data_buffer[0:3] = (v4, v0, v7)
data_buffer[3:6] = (v0, v3, v7)
data_buffer[6:9] = (v0, v1, v2)
data_buffer[9:12] = (v0, v2, v3)
data_buffer[12:15] = (v5, v1, v0)
data_buffer[15:18] = (v5, v0, v4)
data_buffer[18:21] = (v3, v6, v7)
data_buffer[21:24] = (v3, v2, v6)
data_buffer[24:27] = (v2, v1, v6)
data_buffer[27:30] = (v6, v1, v5)
data_buffer[30:33] = (v4, v6, v5)
data_buffer[33:36] = (v7, v6, v4)
# }}}
data_ptr = ct.cast(ct.pointer(data_buffer),
ct.POINTER(ct.c_float))
# create GL buffer
self.__geom_buffer = util.buffer()
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.__geom_buffer.value)
gl.glBufferData(gl.GL_ARRAY_BUFFER, ct.sizeof(data_buffer),
data_ptr,
gl.GL_STATIC_DRAW)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
