glColorIntegeri

glColorIntegeri is a function in the OpenGL (Open Graphics Library) API used for setting the value of a generic vertex attribute or a color index using integer components. This function is specifically designed for applications that utilize integer-based data for certain attributes, offering a way to directly set these values without implicit conversion to floating-point types.

The function typically takes two arguments: an integer index representing the target attribute, and an array of integers specifying the components of the attribute's value. The number of components is determined by the type of attribute being set. For example, a color attribute might have three or four integer components.

Using glColorIntegeri is beneficial when dealing with data that is naturally represented as integers, such as certain types of textures, lookup tables, or when implementing specific rendering techniques that rely on integer precision. It avoids potential loss of precision or aliasing that can occur during floating-point conversions.

The counterpart to glColorIntegeri is glGetIntegeri, which is used to retrieve the current integer value of a generic vertex attribute or color index. Both functions are part of the OpenGL specification and are available in various versions of the API, provided that the necessary extensions are supported by the graphics hardware. Applications should check for the availability of integer attribute support before attempting to use these functions.