glViewportArrayvuint

glViewportArrayvuint is a function within the OpenGL graphics library. It is used for setting the viewport for multiple render targets. The viewport defines the transformation from normalized device coordinates to window coordinates. Specifically, glViewportArrayvuint allows for setting the viewports of multiple viewports associated with an array of render targets simultaneously. This is particularly useful in techniques like deferred rendering or when rendering to multiple layers of a 3D texture. The function takes an index, a count, and a pointer to an array of vec4 values. The index specifies the starting viewport, and the count indicates how many viewports to set. Each vec4 in the array defines the x, y, width, and height of a viewport in window coordinates. This provides a more efficient way to manage multiple viewports compared to calling glViewport for each one individually.