谢谢@NicolBolas。他激励我真正采用此代码并使之生效。而不是理论化：）我删除了vertexArrayObject（它是多余的，因为我们已经有用于顶点和索引的VBO）。因此，您只需在调用glDraw
*之前绑定索引和顶点缓冲区（以及属性）即可。当然，将
None（空指针）传递给
glDrawElements索引而不是
0！非常重要。
from OpenGL.GL import shadersfrom OpenGL.arrays import vbofrom OpenGL.GL import *from OpenGL.raw.GL.ARB.vertex_array_object import glGenVertexArrays, glBindVertexArrayimport pygameimport numpy as npdef run(): pygame.init() screen = pygame.display.set_mode((800,600), pygame.OPENGL|pygame.DOUBLEBUF) #Create the VBO vertices = np.array([[0,1,0],[-1,-1,0],[1,-1,0]], dtype='f') vertexPositions = vbo.VBO(vertices) #Create the index buffer object indices = np.array([[0,1,2]], dtype=np.int32) indexPositions = vbo.VBO(indices, target=GL_ELEMENT_ARRAY_BUFFER) #Now create the shaders VERTEX_SHADER = shaders.compileShader(""" #version 330 layout(location = 0) in vec4 position; void main() { gl_Position = position; } """, GL_VERTEX_SHADER) FRAGMENT_SHADER = shaders.compileShader(""" #version 330 out vec4 outputColor; void main() { outputColor = vec4(0.0f, 1.0f, 0.0f, 1.0f); } """, GL_FRAGMENT_SHADER) shader = shaders.compileProgram(VERTEX_SHADER, FRAGMENT_SHADER) #The draw loop while True: glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT) glUseProgram(shader) indexPositions.bind() vertexPositions.bind() glEnableVertexAttribArray(0); glVertexAttribPointer(0, 3, GL_FLOAT, False, 0, None) #glDrawArrays(GL_TRIANGLES, 0, 3) #This line still works glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_INT, None) #This line does work too! # Show the screen pygame.display.flip()run()
