Lines Matching refs:gamma
139 * Apply gamma correction to an intensity value in [0..max]. Return the
143 gamma_adjust( GLfloat gamma, GLint value, GLint max )
145 if (gamma == 1.0) {
150 return IROUND_POS((GLfloat) max * pow(x, 1.0F/gamma));
756 char *gamma;
792 gamma = _mesa_getenv("MESA_GAMMA");
793 if (gamma) {
795 sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma );