python – 使用PyOpenGL渲染纹理矩形

我正在使用PyOpenGL开发一个项目,我正在尝试让OpenGL呈现一种启动画面.我决定的解决方案是绘制纹理2D矩形.不幸的是,似乎无论我做什么,都没有画出任何东西,我只是得到一个黑色的屏幕(所以我想有些东西被绘制,否则它将是一个透明的窗口,但它绝对不是我想要的).这是我班级的相关代码：

class ClassThing:
    def __init__(self):
        self.Splash = True
        glutInit(sys.argv)

    def TexFromPNG(self,filename):
        img = Image.open(filename)
        img_data = numpy.array(list(img.getdata()),numpy.uint8)

        texture = glGenTextures(1)
        glPixelStorei(GL_UNPACK_ALIGNMENT,1)
        glBindTexture(GL_TEXTURE_2D,texture)
        glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP)
        glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_TEXTURE_MAG_FILTER,GL_LINEAR)
        glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR)
        glTexImage2D(GL_TEXTURE_2D,GL_RGB,img.size[0],img.size[1],GL_UNSIGNED_BYTE,img_data)
        return texture

    def run(self):
        glutInitDisplayMode(GLUT_RGBA)

        glutInitWindowSize(256,224)
        self.window = glutCreateWindow("GL")
        glutDisplayFunc(self.draw)

        glClearColor(0,0)
        glEnable(GL_TEXTURE_2D)
        glEnable(GL_VERTEX_ARRAY)

        self.MainTex = glGenTextures(1)
        self.SplashTex = self.TexFromPNG("Resources/Splash.png")

        glutMainLoop()

    def draw(self):
        glClear(GL_COLOR_BUFFER_BIT)
        glLoadIdentity()
        if self.Splash:
            glBindTexture(GL_TEXTURE_2D,self.SplashTex)
        else:
            glBindTexture(GL_TEXTURE_2D,self.MainTex)

        glTexParameter(GL_TEXTURE_2D,GL_LINEAR)
        glTexParameter(GL_TEXTURE_2D,GL_CLAMP_TO_BORDER)
        glTexParameterf(GL_TEXTURE_2D,GL_CLAMP_TO_BORDER)
        Varray = numpy.array([[0,0],[0,256],[224,0]],numpy.uint16)
        glVertexPointer(2,GL_SHORT,Varray)
        indices = [0,1,2,3]
        glDrawElements(GL_QUADS,GL_UNSIGNED_SHORT,indices)

        glFlush()
thing = ClassThing()
thing.run()

就像我说的那样,只是用一个全黑屏幕给我打网.感觉我可能缺少某种初始化或启用,但我不知道还需要启用什么.

顺便说一下,显然glVertexPointer已被弃用,如果没有它,我将如何运行glDrawElements？是否有某种顶点生成可以做类似于纹理生成或什么？