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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
#ifndef _GROPENGLLIGHT_H
#define _GROPENGLLIGHT_H
#include "graphics/gropengl.h"
struct ogl_light_color {
float r,g,b,a;
};
// Structures
struct opengl_light
{
GLfloat Ambient[4], Diffuse[4], Specular[4];
// light position
GLfloat Position[4];
// spotlight direction (for tube lights)
GLfloat SpotDir[3];
float SpotExp, SpotCutOff;
float ConstantAtten, LinearAtten, QuadraticAtten;
bool occupied;
int type;
};
struct light_data;
//Variables
extern bool lighting_is_enabled;
extern GLint GL_max_lights;
extern int Num_active_gl_lights;
extern int GL_center_alpha;
extern float GL_light_factor;
//Functions
int gr_opengl_make_light(light *fs_light, int idx, int priority); //unused -- stub function
void gr_opengl_modify_light(light *fs_light, int idx, int priority); //unused -- stub function
void gr_opengl_destroy_light(int idx); //unused -- stub function
void gr_opengl_set_light(light *fs_light);
void gr_opengl_reset_lighting();
void gr_opengl_set_lighting(bool set, bool state);
void gr_opengl_center_alpha(int type);
void gr_opengl_set_center_alpha(int type);
void gr_opengl_set_ambient_light(int red, int green, int blue);
void gr_opengl_set_light_factor(float factor);
void opengl_change_active_lights(int pos, int d_offset = 0);
void opengl_light_init();
void opengl_light_shutdown();
void opengl_default_light_settings(int amb = 1, int emi = 1, int spec = 1);
#endif //_GROPENGLLIGHT_H
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