107    struct gl_light_uniforms *lu = &ctx->Light.LightSource[lnum];  in _mesa_light()  local
111       if (TEST_EQ_4V(lu->Ambient, params))  in _mesa_light()
114       COPY_4V( lu->Ambient, params );  in _mesa_light()
117       if (TEST_EQ_4V(lu->Diffuse, params))  in _mesa_light()
120       COPY_4V( lu->Diffuse, params );  in _mesa_light()
123       if (TEST_EQ_4V(lu->Specular, params))  in _mesa_light()
126       COPY_4V( lu->Specular, params );  in _mesa_light()
130       if (TEST_EQ_4V(lu->EyePosition, params))  in _mesa_light()
134       bool old_positional = lu->EyePosition[3] != 0.0f;  in _mesa_light()
136       COPY_4V(lu->EyePosition, params);  in _mesa_light()
158       COPY_3V(lu->_HalfVector, p);  in _mesa_light()
159       lu->_HalfVector[3] = 1.0;  in _mesa_light()
164       if (TEST_EQ_3V(lu->SpotDirection, params))  in _mesa_light()
167       COPY_3V(lu->SpotDirection, params);  in _mesa_light()
172       if (lu->SpotExponent == params[0])  in _mesa_light()
175       lu->SpotExponent = params[0];  in _mesa_light()
179       if (lu->SpotCutoff == params[0])  in _mesa_light()
183       bool old_is_180 = lu->SpotCutoff == 180.0f;  in _mesa_light()
185       lu->SpotCutoff = params[0];  in _mesa_light()
186       lu->_CosCutoff = (cosf(lu->SpotCutoff * M_PI / 180.0));  in _mesa_light()
187       if (lu->_CosCutoff < 0)  in _mesa_light()
188          lu->_CosCutoff = 0;  in _mesa_light()
203       if (lu->ConstantAttenuation == params[0])  in _mesa_light()
207       bool old_is_one = lu->ConstantAttenuation == 1.0f;  in _mesa_light()
209       lu->ConstantAttenuation = params[0];  in _mesa_light()
219       if (lu->LinearAttenuation == params[0])  in _mesa_light()
223       bool old_is_zero = lu->LinearAttenuation == 0.0f;  in _mesa_light()
225       lu->LinearAttenuation = params[0];  in _mesa_light()
235       if (lu->QuadraticAttenuation == params[0])  in _mesa_light()
239       bool old_is_zero = lu->QuadraticAttenuation == 0.0f;  in _mesa_light()
241       lu->QuadraticAttenuation = params[0];  in _mesa_light()
692          struct gl_light_uniforms *lu = &ctx->Light.LightSource[i];  in _mesa_update_material()  local
693          SCALE_3V( light->_MatAmbient[0], lu->Ambient,  in _mesa_update_material()
703          struct gl_light_uniforms *lu = &ctx->Light.LightSource[i];  in _mesa_update_material()  local
704          SCALE_3V( light->_MatAmbient[1], lu->Ambient,  in _mesa_update_material()
728          struct gl_light_uniforms *lu = &ctx->Light.LightSource[i];  in _mesa_update_material()  local
729 	 SCALE_3V( light->_MatDiffuse[0], lu->Diffuse,  in _mesa_update_material()
739          struct gl_light_uniforms *lu = &ctx->Light.LightSource[i];  in _mesa_update_material()  local
740 	 SCALE_3V( light->_MatDiffuse[1], lu->Diffuse,  in _mesa_update_material()
751          struct gl_light_uniforms *lu = &ctx->Light.LightSource[i];  in _mesa_update_material()  local
752 	 SCALE_3V( light->_MatSpecular[0], lu->Specular,  in _mesa_update_material()
762          struct gl_light_uniforms *lu = &ctx->Light.LightSource[i];  in _mesa_update_material()  local
763 	 SCALE_3V( light->_MatSpecular[1], lu->Specular,  in _mesa_update_material()
1046       struct gl_light_uniforms *lu = &ctx->Light.LightSource[i];  in compute_light_positions()  local
1050 	 COPY_4FV( light->_Position, lu->EyePosition );  in compute_light_positions()
1055 			  lu->EyePosition );  in compute_light_positions()
1082 	    COPY_3V( light->_NormSpotDirection, lu->SpotDirection );  in compute_light_positions()
1087             COPY_3V(spotDir, lu->SpotDirection);  in compute_light_positions()
1100 	    if (PV_dot_dir > lu->_CosCutoff) {  in compute_light_positions()
1102                   powf(PV_dot_dir, lu->SpotExponent);  in compute_light_positions()
1210 init_light( struct gl_light *l, struct gl_light_uniforms *lu, GLuint n )  in init_light()  argument
1212    ASSIGN_4V( lu->Ambient, 0.0, 0.0, 0.0, 1.0 );  in init_light()
1214       ASSIGN_4V( lu->Diffuse, 1.0, 1.0, 1.0, 1.0 );  in init_light()
1215       ASSIGN_4V( lu->Specular, 1.0, 1.0, 1.0, 1.0 );  in init_light()
1218       ASSIGN_4V( lu->Diffuse, 0.0, 0.0, 0.0, 1.0 );  in init_light()
1219       ASSIGN_4V( lu->Specular, 0.0, 0.0, 0.0, 1.0 );  in init_light()
1221    ASSIGN_4V( lu->EyePosition, 0.0, 0.0, 1.0, 0.0 );  in init_light()
1222    ASSIGN_3V( lu->SpotDirection, 0.0, 0.0, -1.0 );  in init_light()
1223    lu->SpotExponent = 0.0;  in init_light()
1224    lu->SpotCutoff = 180.0;  in init_light()
1225    lu->_CosCutoff = 0.0;		/* KW: -ve values not admitted */  in init_light()
1226    lu->ConstantAttenuation = 1.0;  in init_light()
1227    lu->LinearAttenuation = 0.0;  in init_light()
1228    lu->QuadraticAttenuation = 0.0;  in init_light()