glBindFramebufferGLenum

The glBindFramebuffer function in OpenGL is used to bind a framebuffer object to a target. A framebuffer object, often abbreviated as FBO, is a collection of buffer objects that serve as the destination for rendering operations. By binding an FBO, subsequent rendering commands will draw to the FBO's attached buffers instead of the default window system framebuffer. The target parameter specifies whether the FBO is being bound for reading or drawing. Common targets include GL_FRAMEBUFFER, which binds the FBO for both reading and drawing, GL_DRAW_FRAMEBUFFER for drawing operations, and GL_READ_FRAMEBUFFER for reading operations. If the value 0 is passed for the framebuffer object name, the default framebuffer is bound to the specified target. This allows switching rendering back to the screen. Unbinding an FBO by binding 0 is a crucial step before presenting the rendered content to the user. FBOs enable techniques like offscreen rendering, deferred shading, and post-processing effects by allowing developers to render scenes into textures or other buffer objects.