X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Flight.h;h=b97e17b5be4e5f55ad4babd3bd71b124ed47c456;hb=cb3a9f984de6b1a167c60c345d51d55b8c0ca80b;hp=78178f982b8e05f00293553f787f3e152da1fec4;hpb=ba643a2094a1e844b6ce60f468057057557859ce;p=mesa.git diff --git a/src/mesa/main/light.h b/src/mesa/main/light.h index 78178f982b8..b97e17b5be4 100644 --- a/src/mesa/main/light.h +++ b/src/mesa/main/light.h @@ -1,21 +1,24 @@ -/* $Id: light.h,v 1.4 2000/10/28 18:34:48 brianp Exp $ */ +/** + * \file light.h + * Lighting. + */ /* * Mesa 3-D graphics library * Version: 3.5 - * - * Copyright (C) 1999-2000 Brian Paul All Rights Reserved. - * + * + * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. + * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: - * + * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. - * + * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL @@ -29,97 +32,115 @@ #define LIGHT_H -#include "types.h" - -struct gl_shine_tab { - struct gl_shine_tab *next, *prev; - GLfloat tab[SHINE_TABLE_SIZE+1]; - GLfloat shininess; - GLuint refcount; -}; +#include "mtypes.h" - -extern void +extern void GLAPIENTRY _mesa_ShadeModel( GLenum mode ); -extern void +#if _HAVE_FULL_GL +extern void GLAPIENTRY _mesa_ColorMaterial( GLenum face, GLenum mode ); -extern void +extern void GLAPIENTRY _mesa_Lightf( GLenum light, GLenum pname, GLfloat param ); -extern void +extern void GLAPIENTRY _mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params ); -extern void +extern void GLAPIENTRY _mesa_Lightiv( GLenum light, GLenum pname, const GLint *params ); -extern void +extern void GLAPIENTRY _mesa_Lighti( GLenum light, GLenum pname, GLint param ); -extern void +extern void GLAPIENTRY _mesa_LightModelf( GLenum pname, GLfloat param ); -extern void +extern void GLAPIENTRY _mesa_LightModelfv( GLenum pname, const GLfloat *params ); -extern void +extern void GLAPIENTRY _mesa_LightModeli( GLenum pname, GLint param ); -extern void +extern void GLAPIENTRY _mesa_LightModeliv( GLenum pname, const GLint *params ); -extern void -_mesa_Materialf( GLenum face, GLenum pname, GLfloat param ); +extern void GLAPIENTRY +_mesa_GetLightfv( GLenum light, GLenum pname, GLfloat *params ); -extern void -_mesa_Materialfv( GLenum face, GLenum pname, const GLfloat *params ); +extern void GLAPIENTRY +_mesa_GetLightiv( GLenum light, GLenum pname, GLint *params ); -extern void -_mesa_Materiali( GLenum face, GLenum pname, GLint param ); +extern void GLAPIENTRY +_mesa_GetMaterialfv( GLenum face, GLenum pname, GLfloat *params ); -extern void -_mesa_Materialiv( GLenum face, GLenum pname, const GLint *params ); +extern void GLAPIENTRY +_mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params ); -extern void -_mesa_GetLightfv( GLenum light, GLenum pname, GLfloat *params ); extern void -_mesa_GetLightiv( GLenum light, GLenum pname, GLint *params ); +_mesa_light(GLcontext *ctx, GLuint lnum, GLenum pname, const GLfloat *params); -extern void -_mesa_GetMaterialfv( GLenum face, GLenum pname, GLfloat *params ); -extern void -_mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params ); +/* Lerp between adjacent values in the f(x) lookup table, giving a + * continuous function, with adequeate overall accuracy. (Though + * still pretty good compared to a straight lookup). + * Result should be a GLfloat. + */ +#define GET_SHINE_TAB_ENTRY( table, dp, result ) \ +do { \ + struct gl_shine_tab *_tab = table; \ + float f = (dp * (SHINE_TABLE_SIZE-1)); \ + int k = (int) f; \ + if (k < 0 /* gcc may cast an overflow float value to negative int value*/ \ + || k > SHINE_TABLE_SIZE-2) \ + result = (GLfloat) _mesa_pow( dp, _tab->shininess ); \ + else \ + result = _tab->tab[k] + (f-k)*(_tab->tab[k+1]-_tab->tab[k]); \ +} while (0) + +extern GLuint _mesa_material_bitmask( GLcontext *ctx, + GLenum face, GLenum pname, + GLuint legal, + const char * ); +extern void _mesa_invalidate_spot_exp_table( struct gl_light *l ); -extern GLuint gl_material_bitmask( GLcontext *ctx, - GLenum face, GLenum pname, - GLuint legal, - const char * ); +extern void _mesa_invalidate_shine_table( GLcontext *ctx, GLuint i ); -extern void gl_set_material( GLcontext *ctx, GLuint bitmask, - const GLfloat *params); +extern void _mesa_validate_all_lighting_tables( GLcontext *ctx ); -extern void gl_compute_spot_exp_table( struct gl_light *l ); +extern void _mesa_update_lighting( GLcontext *ctx ); -extern void gl_compute_shine_table( GLcontext *ctx, GLuint i, - GLfloat shininess ); +extern void _mesa_update_tnl_spaces( GLcontext *ctx, GLuint new_state ); -extern void gl_update_lighting( GLcontext *ctx ); +extern void _mesa_update_material( GLcontext *ctx, + GLuint bitmask ); -extern void gl_compute_light_positions( GLcontext *ctx ); +extern void _mesa_copy_materials( struct gl_material *dst, + const struct gl_material *src, + GLuint bitmask ); -extern void gl_update_normal_transform( GLcontext *ctx ); +extern void _mesa_update_color_material( GLcontext *ctx, + const GLfloat rgba[4] ); -extern void gl_update_material( GLcontext *ctx, - const struct gl_material src[2], - GLuint bitmask ); +extern void _mesa_init_lighting( GLcontext *ctx ); -extern void gl_update_color_material( GLcontext *ctx, const GLchan rgba[4] ); +extern void _mesa_free_lighting_data( GLcontext *ctx ); +extern void _mesa_allow_light_in_model( GLcontext *ctx, GLboolean flag ); +#else +#define _mesa_update_color_material( c, r ) ((void)0) +#define _mesa_validate_all_lighting_tables( c ) ((void)0) +#define _mesa_invalidate_spot_exp_table( l ) ((void)0) +#define _mesa_material_bitmask( c, f, p, l, s ) 0 +#define _mesa_init_lighting( c ) ((void)0) +#define _mesa_free_lighting_data( c ) ((void)0) +#define _mesa_update_lighting( c ) ((void)0) +#define _mesa_update_tnl_spaces( c, n ) ((void)0) +#define GET_SHINE_TAB_ENTRY( table, dp, result ) ((result)=0) #endif +#endif