textrender.py 文件源码

def initializeGL(self):
        self.sdf_shader = self.gls.shader_cache.get("image_vert", "tex_frag")

        self.buffer_dtype = numpy.dtype([
            ("vertex", numpy.float32, 2),
            ("texpos", numpy.float32, 2)
        ])

        self.b1 = vbobind(self.sdf_shader, self.buffer_dtype, "vertex")
        self.b2 = vbobind(self.sdf_shader, self.buffer_dtype, "texpos")


        self.tex = Texture()


        # TODO: implement short-int caching
        # build a De-bruijn sequence (shorted substring containing all substrings)
        # self.int_seq = de_bruijn(4)
        # self.int_seq += self.int_seq[:3]