GLMAXCOLORATTACHMENTS

GLMAXCOLORATTACHMENTS is a token used in OpenGL to query the maximum number of color buffers that can be simultaneously bound to a framebuffer object. It is defined by the OpenGL specification as part of the framebuffer object extension. When an application needs to render to multiple color buffers at once, for example in techniques like deferred shading, it can query this value to determine the hardware's capabilities.

To obtain the value, an application would typically use the glGetIntegerv function with GLMAXCOLORATTACHMENTS as the pname argument. The returned integer value indicates the maximum number of distinct color buffers that the GPU can handle for rendering operations. This limit is crucial for developers to understand as it directly impacts the feasibility of certain rendering techniques and the complexity of scene rendering that can be achieved. Exceeding this limit would result in undefined behavior or errors. The actual value can vary significantly between different graphics hardware and driver versions.