#include "main.h"
#include <cglm/mat4.h>
#include <cglm/cam.h>
#include <cglm/quat.h>

mat4 ortho[] =
{
	{
		{ 1, 0, 0, 0 },
		{ 0, 1, 0, 0 },
		{ 0, 0, 1, 0 },
		{ 0, 0, 0, 1 },
	},
	{
		{ 0, 1, 0, 0 },
		{-1, 0, 0, 0 },
		{ 0, 0, 1, 0 },
		{ 0, 0, 0, 1 },
	},
	{
		{ 0, 0, 1, 0 },
		{ 0, 1, 0, 0 },
		{-1, 0, 0, 0 },
		{ 0, 0, 0, 1 },
	},
};

void load_fix_matrix( id_t shader, float ratio )
{
	mat4 m, n;
	const int d = 7;

	glm_lookat( (vec3){0,0,-d}, (vec3){0,0,0}, (vec3){0,1,0}, m );
	glm_perspective( CGLM_PI/4, ratio, d-3, d+3, n );
	glm_mat4_mul( n, m, m );

	gload_mat4( shader, "fix", (mat4_t) m );
}

void load_mdl_matrix( id_t shader, unsigned char i, unsigned char c )
{
	gload_float( shader, "idx", c );
	gload_mat4( shader, "mdl", (mat4_t)ortho[i] );
}

void load_rot_matrix( id_t shader, quat_t q )
{
	mat4 m;
	glm_quat_mat4( q, m );
	gload_mat4( shader, "rot", (mat4_t)m );
}