/*
SHADERS.H

header included in hcex build.
*/

#ifndef __SHADERS_H
#define __SHADERS_H
#pragma once

/* ---------- headers */

#include "math/real_math.h"

/* ---------- constants */

/* ---------- macros */

/* ---------- structures */

struct shader_texture_animation
{
	short u_source;
	short u_function;
	real u_period;
	real u_phase;
	real u_scale;
	short v_source;
	short v_function;
	real v_period;
	real v_phase;
	real v_scale;
	short r_source;
	short r_function;
	real r_period;
	real r_phase;
	real r_scale;
	real_point2d r_center;
};

struct render_animation
{
	real_rgb_color const *colors;
	real const *values;
};

/* ---------- prototypes/SHADERS.C */

short shader_get_vertex_shader_permutation(
	struct shader const *shader);
boolean shader_is_mirror(
	struct shader *shader);
boolean shader_is_destructable(
	struct shader *shader);
boolean shader_is_double_sided(
	struct shader *shader);
boolean shader_is_decal(
	struct shader *shader);
boolean shader_is_water_decal(
	struct shader *shader);
boolean shader_ignores_effect(
	struct shader *shader);
boolean shader_type_is_transparent(
	short shader_type);
boolean shader_type_is_lightmapped(
	short shader_type);
boolean shader_type_is_vertex_lit(
	short shader_type);
boolean shader_type_is_valid_for_environment(
	short shader_type);
boolean shader_type_is_valid_for_model(
	short shader_type);
boolean shader_type_is_valid_for_modifier(
	short shader_type);
void shader_texture_animation_evaluate(
	struct shader_texture_animation const *texture_animation,
	struct render_animation const *render_animation,
	real u_scale,
	real v_scale,
	real u_offset,
	real v_offset,
	real r_offset,
	real time_value,
	real_vector4d *u_transform_reference,
	real_vector4d *v_transform_reference);
void shader_environment_texture_animation_evaluate(
	struct shader const *shader,
	real time_value,
	real *u_offset,
	real *v_offset);
void numeric_countdown_timer_set(
	long milliseconds,
	boolean auto_start);
short numeric_countdown_timer_get(
	short digit_index);
void numeric_countdown_timer_stop(
	void);
void numeric_countdown_timer_restart(
	void);
void numeric_countdown_timer_update(
	void);

/* ---------- globals */

/* ---------- public code */

#endif // __SHADERS_H