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145 lines
4.7 KiB
C
145 lines
4.7 KiB
C
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/*
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* Mesa 3-D graphics library
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* Version: 7.5
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef LIGHT_H
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#define LIGHT_H
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#include "glheader.h"
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#include "mfeatures.h"
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struct gl_context;
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struct gl_light;
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struct gl_material;
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extern void GLAPIENTRY
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_mesa_ShadeModel( GLenum mode );
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#if _HAVE_FULL_GL
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extern void GLAPIENTRY
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_mesa_ColorMaterial( GLenum face, GLenum mode );
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extern void GLAPIENTRY
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_mesa_Lightf( GLenum light, GLenum pname, GLfloat param );
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extern void GLAPIENTRY
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_mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params );
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extern void GLAPIENTRY
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_mesa_Lightiv( GLenum light, GLenum pname, const GLint *params );
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extern void GLAPIENTRY
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_mesa_Lighti( GLenum light, GLenum pname, GLint param );
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extern void GLAPIENTRY
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_mesa_LightModelf( GLenum pname, GLfloat param );
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extern void GLAPIENTRY
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_mesa_LightModelfv( GLenum pname, const GLfloat *params );
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extern void GLAPIENTRY
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_mesa_LightModeli( GLenum pname, GLint param );
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extern void GLAPIENTRY
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_mesa_LightModeliv( GLenum pname, const GLint *params );
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extern void GLAPIENTRY
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_mesa_GetLightfv( GLenum light, GLenum pname, GLfloat *params );
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extern void GLAPIENTRY
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_mesa_GetLightiv( GLenum light, GLenum pname, GLint *params );
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extern void GLAPIENTRY
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_mesa_GetMaterialfv( GLenum face, GLenum pname, GLfloat *params );
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extern void GLAPIENTRY
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_mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params );
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extern void
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_mesa_light(struct gl_context *ctx, GLuint lnum, GLenum pname, const GLfloat *params);
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/* Lerp between adjacent values in the f(x) lookup table, giving a
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* continuous function, with adequeate overall accuracy. (Though
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* still pretty good compared to a straight lookup).
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* Result should be a GLfloat.
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*/
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#define GET_SHINE_TAB_ENTRY( table, dp, result ) \
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do { \
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struct gl_shine_tab *_tab = table; \
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float f = (dp * (SHINE_TABLE_SIZE-1)); \
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int k = (int) f; \
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if (k < 0 /* gcc may cast an overflow float value to negative int value*/ \
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|| k > SHINE_TABLE_SIZE-2) \
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result = (GLfloat) pow( dp, _tab->shininess ); \
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else \
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result = _tab->tab[k] + (f-k)*(_tab->tab[k+1]-_tab->tab[k]); \
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} while (0)
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extern GLuint _mesa_material_bitmask( struct gl_context *ctx,
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GLenum face, GLenum pname,
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GLuint legal,
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const char * );
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extern void _mesa_invalidate_spot_exp_table( struct gl_light *l );
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extern void _mesa_invalidate_shine_table( struct gl_context *ctx, GLuint i );
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extern void _mesa_validate_all_lighting_tables( struct gl_context *ctx );
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extern void _mesa_update_lighting( struct gl_context *ctx );
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extern void _mesa_update_tnl_spaces( struct gl_context *ctx, GLuint new_state );
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extern void _mesa_update_material( struct gl_context *ctx,
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GLuint bitmask );
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extern void _mesa_update_color_material( struct gl_context *ctx,
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const GLfloat rgba[4] );
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extern void _mesa_init_lighting( struct gl_context *ctx );
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extern void _mesa_free_lighting_data( struct gl_context *ctx );
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extern void _mesa_allow_light_in_model( struct gl_context *ctx, GLboolean flag );
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#else
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#define _mesa_update_color_material( c, r ) ((void)0)
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#define _mesa_validate_all_lighting_tables( c ) ((void)0)
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#define _mesa_invalidate_spot_exp_table( l ) ((void)0)
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#define _mesa_material_bitmask( c, f, p, l, s ) 0
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#define _mesa_init_lighting( c ) ((void)0)
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#define _mesa_free_lighting_data( c ) ((void)0)
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#define _mesa_update_lighting( c ) ((void)0)
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#define _mesa_update_tnl_spaces( c, n ) ((void)0)
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#define GET_SHINE_TAB_ENTRY( table, dp, result ) ((result)=0)
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#endif
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#endif
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