我试着运行下面例子中的代码。然而,在调用glGetBufferSubData
之后,data保留其默认值,并且不获取存储在bufferObject[0]
中的值,这些值等于顶点中的值。我是否错误地使用了glGetBufferSubData
?
glBindVertexArray(arrayObject);
glGenBuffers(1, &bufferObject[0]);
glBindBuffer(GL_ARRAY_BUFFER, bufferObject[0]);
glBufferData(GL_ARRAY_BUFFER, numVertices * sizeof(Vector3), vertices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
Vector3 *data = new Vector3();
glGetBufferSubData(bufferObject[0], 0, numVertices * sizeof(Vector3), data);
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1条答案
按热度按时间vshtjzan1#
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glGetBufferSubData()
的target
参数应该指定绑定点,而不是缓冲区对象。请尝试GL_ARRAY_BUFFER
:型