Question

Which of these functions activates a Vertex Buffer Object?

A. glBindBuffers()
B. glBuffersData()
C. glGenBuffers()
D. glGenerateBuffers()

Answer 1

The function that activates a Vertex Buffer Object (VBO) is glBindBuffers() (option A).

Step-by-step explanation:

The function that activates a Vertex Buffer Object (VBO) is glBindBuffers() (option A).

When working with VBOs, we use glBindBuffer() to bind (activate) a specific buffer object. This function takes two arguments: the target and the buffer object ID. The target specifies the type of buffer object, and in the case of VBOs, it is usually GL_ARRAY_BUFFER or GL_ELEMENT_ARRAY_BUFFER. The buffer object ID is the unique identifier assigned to the buffer object when it is created.

For example, to activate a VBO with ID 123, we would call glBindBuffer(GL_ARRAY_BUFFER, 123). This enables us to use the VBO for vertex data when rendering.

The function that activates a Vertex Buffer Object (VBO) in OpenGL is glBindBuffer(). When working with VBOs, several steps are involved:

Generating the buffer with glGenBuffers().

Binding the buffer with glBindBuffer() which makes it the current buffer and 'activates' it for subsequent buffer operations.

Transferring data to the buffer with glBufferData().

Therefore, the correct answer to which function activates a Vertex Buffer Object is A. glBindBuffer().