Lines Matching refs:VP
162 GLfloat VP[3]; /* vector from vertex to light pos */
168 COPY_3V(VP, light->_VP_inf_norm);
175 /* VP = vector from vertex pos to light[i].pos */
176 SUB_3V(VP, light->_Position, vertex);
177 /* d = length(VP) */
178 d = (GLfloat) LEN_3FV( VP );
180 /* normalize VP */
182 SELF_SCALE_SCALAR_3V(VP, invd);
191 GLfloat PV_dot_dir = - DOT3(VP, light->_NormSpotDirection);
206 n_dot_VP = DOT3( normal, VP );
228 SUB_3V(VP, VP, v);
229 NORMALIZE_3FV(VP);
230 h = VP;
233 ACC_3V(VP, ctx->_EyeZDir);
234 NORMALIZE_3FV(VP);
235 h = VP;