def get_shader_program(
self,
shader_wrapper: ShaderWrapper) -> tuple[moderngl.Program, str]:
sid = shader_wrapper.get_program_id()
if sid not in self.id_to_shader_program:
# Create shader program for the first time, then cache
# in the id_to_shader_program dictionary
program = self.ctx.program(**shader_wrapper.get_program_code())
vert_format = moderngl.detect_format(
program, shader_wrapper.vert_attributes)
self.id_to_shader_program[sid] = (program, vert_format)
return self.id_to_shader_program[sid]
def init_shader_data(self):
self.fill_data = np.zeros(0, dtype=self.fill_dtype)
self.stroke_data = np.zeros(0, dtype=self.stroke_dtype)
self.fill_shader_wrapper = ShaderWrapper(
vert_data=self.fill_data,
vert_indices=np.zeros(0, dtype='i4'),
shader_folder=self.fill_shader_folder,
render_primitive=self.render_primitive,
)
self.stroke_shader_wrapper = ShaderWrapper(
vert_data=self.stroke_data,
shader_folder=self.stroke_shader_folder,
render_primitive=self.render_primitive,
)