glLighti

glLighti is a function in the OpenGL programming interface used to specify integer-valued parameters for lighting. This function is part of the OpenGL API, a standard for rendering 2D and 3D vector graphics. When working with lighting in OpenGL, you can control various aspects like the direction, color, and intensity of light sources.

The glLighti function allows developers to set these lighting parameters using integer values. For example, it can be used to enable or disable a specific light source. When a light is enabled, it contributes to the illumination of the scene according to its defined properties. Conversely, disabling a light effectively turns it off, so it no longer affects the rendering. The function takes two arguments: a parameter identifier and an integer value. The parameter identifier specifies which lighting property is being set, and the integer value provides the new setting for that property.

Common uses of glLighti include controlling the state of a light source. For instance, the parameter GL_LIGHT0 enables or disables the first light source (indexed from 0). By setting this parameter to GL_TRUE or GL_FALSE, a programmer can dynamically turn lights on or off within an application. While glLighti is used for integer parameters, OpenGL also provides glLightf and glLightfv for setting floating-point and vector-valued lighting parameters, respectively, offering a comprehensive set of tools for sophisticated lighting effects.