HP Workstation zx2000 OpenGL 1.1 Reference for HP-UX 11.x - Page 254

L glLightModel glLightModel glLightModelf, glLightModeli, glLightModelfv, glLightModeliv: set the lighting model parameters. C Specification void glLightModelf( GLenum pname, GLfloat param) void glLightModeli( GLenum pname, GLint param) void glLightModelfv( GLenum pname, const GLfloat *params) void glLightModeliv( GLenum pname, const GLint *params) Parameters pname param pname params Specifies a single-valued lighting model parameter. GL_LIGHT_MODEL_LOCAL_VIEWER and GL_LIGHT_MODEL_TWO_SIDE are accepted. Specifies the value that param will be set to. Specifies a lighting model parameter. GL_LIGHT_MODEL_AMBIENT, GL_LIGHT_MODEL_LOCAL_VIEWER, and GL_LIGHT_MODEL_TWO_SIDE are accepted. Specifies a pointer to the value or values that params will be set to. Description glLightModel sets the lighting model parameter. pname names a parameter and params gives the new value. There are three lighting model parameters: GL_LIGHT_MODEL_AMBIENT params contains four integer or floating-point values that specify the ambient RGBA intensity of the entire scene. Integer values are mapped linearly such that the most positive representable value maps to 1.0, and the most negative representable value maps to - 1.0. Floating-point values are mapped directly. Neither integer nor floating-point values are clamped. The initial ambient scene intensity is (0.2, 0.2, 0.2, 1.0). GL_LIGHT_MODEL_LOCAL_VIEWER 254 Chapter 10