按下按键时Pyglet屏幕闪烁

Question

当我运行我的演示程序时，键盘输入工作正常，但当我按下键盘上的键时，屏幕会闪烁。它是随机发生的，不仅仅是当我按下按键时，而且还发布在发布时。

这是我的渲染功能：

@self.win.event
    def on_draw():
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) #clear backbuffer and z-buffer
        #calculate view matrix
        viewMatrix = self.lookat(self.cameraPos, self.cameraTarget, self.cameraUp)
        texnum = -1 #set texture to default
        shader = '' #set shader to default
        modelMatrixNum = -1 #set model matrix to default
        glEnable(GL_TEXTURE_2D) #enable textures
        for render in self.renderList: #loop through poly lists in renderList
            try:
                if render['tex'] != texnum: #if this poly list is using a different texture,
                    texnum = render['tex'] #bind it, and reset default
                    glBindTexture(GL_TEXTURE_2D, texnum)
            except KeyError: #but if it doesn't have a texture
                pass #just use the last one
            try:
                if shader != render['shd']: #if this poly list is using a different shader,
                    shader = render['shd']
                    self.shaders[shader].UseProgram() #change shader
                    self.shaders[shader].SetViewMatrix(viewMatrix)
                    self.shaders[shader].SetProjectionMatrix(self.projectionMatrix)
                    self.shaders[shader].SetColorMatrix(self.colorMatrix)
            except KeyError: #but if it doesn't have a shader
                pass #just use the last one

            #now, calculate matrices that vary for each polygon and write them
            try:
                modelMatrix = render['mod'] #see if this polygon has any special modeling matrix
            except KeyError:
                #if not, just use the identity matrix
                modelMatrix = np.identity(4)
            # Set uniforms in shader program
            self.shaders[shader].SetModelMatrix(modelMatrix)
            # Write matrices
            self.shaders[shader].WriteMatrices()

            render['vrt'].draw(render['prm']) #actually draw polygon
        glDisable(GL_TEXTURE_2D)
        self.renderList = [] #clear renderList for next loop

这些是我的输入功能（他们只是显示输入VKID）：

@self.win.event
    def on_key_press(symbol, modifiers):
        print symbol

    @self.win.event
    def on_key_release(symbol, modifiers):
        print symbol

我该如何解决这个问题？还有其他人有这个问题吗？

编辑：我明白了。将pyglet.clock.schedule_interval(update, 1.0/self.FPS)更改为pyglet.clock.schedule(update)以60 FPS的速度运行update，但是您为它安排了一个间隔，然后当您按下按键时屏幕会闪烁。