diff options
Diffstat (limited to 'src/mesa/main/light.c')
| -rw-r--r-- | src/mesa/main/light.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c index f40e561a893..962a3e6893d 100644 --- a/src/mesa/main/light.c +++ b/src/mesa/main/light.c @@ -861,112 +861,6 @@ _mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params ) -/**********************************************************************/ -/***** Lighting computation *****/ -/**********************************************************************/ - - -/* - * Notes: - * When two-sided lighting is enabled we compute the color (or index) - * for both the front and back side of the primitive. Then, when the - * orientation of the facet is later learned, we can determine which - * color (or index) to use for rendering. - * - * KW: We now know orientation in advance and only shade for - * the side or sides which are actually required. - * - * Variables: - * n = normal vector - * V = vertex position - * P = light source position - * Pe = (0,0,0,1) - * - * Precomputed: - * IF P[3]==0 THEN - * // light at infinity - * IF local_viewer THEN - * _VP_inf_norm = unit vector from V to P // Precompute - * ELSE - * // eye at infinity - * _h_inf_norm = Normalize( VP + <0,0,1> ) // Precompute - * ENDIF - * ENDIF - * - * Functions: - * Normalize( v ) = normalized vector v - * Magnitude( v ) = length of vector v - */ - - - -static void -validate_shine_table( struct gl_context *ctx, GLuint side, GLfloat shininess ) -{ - struct gl_shine_tab *list = ctx->_ShineTabList; - struct gl_shine_tab *s; - - ASSERT(side < 2); - - foreach(s, list) - if ( s->shininess == shininess ) - break; - - if (s == list) { - GLint j; - GLfloat *m; - - foreach(s, list) - if (s->refcount == 0) - break; - - m = s->tab; - m[0] = 0.0; - if (shininess == 0.0) { - for (j = 1 ; j <= SHINE_TABLE_SIZE ; j++) - m[j] = 1.0; - } - else { - for (j = 1 ; j < SHINE_TABLE_SIZE ; j++) { - GLdouble t, x = j / (GLfloat) (SHINE_TABLE_SIZE - 1); - if (x < 0.005) /* underflow check */ - x = 0.005; - t = pow(x, shininess); - if (t > 1e-20) - m[j] = (GLfloat) t; - else - m[j] = 0.0; - } - m[SHINE_TABLE_SIZE] = 1.0; - } - - s->shininess = shininess; - } - - if (ctx->_ShineTable[side]) - ctx->_ShineTable[side]->refcount--; - - ctx->_ShineTable[side] = s; - move_to_tail( list, s ); - s->refcount++; -} - - -void -_mesa_validate_all_lighting_tables( struct gl_context *ctx ) -{ - GLfloat shininess; - - shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0]; - if (!ctx->_ShineTable[0] || ctx->_ShineTable[0]->shininess != shininess) - validate_shine_table( ctx, 0, shininess ); - - shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0]; - if (!ctx->_ShineTable[1] || ctx->_ShineTable[1]->shininess != shininess) - validate_shine_table( ctx, 1, shininess ); -} - - /** * Examine current lighting parameters to determine if the optimized lighting * function can be used. @@ -1304,17 +1198,6 @@ _mesa_init_lighting( struct gl_context *ctx ) ctx->Light.ColorMaterialEnabled = GL_FALSE; ctx->Light.ClampVertexColor = GL_TRUE; - /* Lighting miscellaneous */ - ctx->_ShineTabList = MALLOC_STRUCT( gl_shine_tab ); - make_empty_list( ctx->_ShineTabList ); - /* Allocate 10 (arbitrary) shininess lookup tables */ - for (i = 0 ; i < 10 ; i++) { - struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab ); - s->shininess = -1; - s->refcount = 0; - insert_at_tail( ctx->_ShineTabList, s ); - } - /* Miscellaneous */ ctx->Light._NeedEyeCoords = GL_FALSE; ctx->_NeedEyeCoords = GL_FALSE; @@ -1329,11 +1212,4 @@ _mesa_init_lighting( struct gl_context *ctx ) void _mesa_free_lighting_data( struct gl_context *ctx ) { - struct gl_shine_tab *s, *tmps; - - /* Free lighting shininess exponentiation table */ - foreach_s( s, tmps, ctx->_ShineTabList ) { - free( s ); - } - free( ctx->_ShineTabList ); } |