/*
 * Tuxánci 2 - A first person shooter
 * Copyright (C) 2025-2026  Connor Thomson
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef TA_SHADOW_H
#define TA_SHADOW_H

#include "ta_sdl.h"

#define TA_SHADOW_DIMENSION 3
#define TA_SHADOW_MAP_SIZE  2048u
#define TA_SHADOW_FORMAT    SDL_GPU_TEXTUREFORMAT_D32_FLOAT

extern SDL_GPUTexture *ta_shadow_texture;
extern SDL_GPUSampler *ta_shadow_sampler;
extern float           ta_shadow_light_direction[TA_SHADOW_DIMENSION];
extern float           ta_shadow_normal_offset;
extern float           ta_shadow_minimum_bias;
extern float           ta_shadow_maximum_bias;
extern float           ta_shadow_strength;

void ta_shadow_init(void);
void ta_shadow_get_light_view_projection(float *matrix);
SDL_GPURenderPass *ta_shadow_begin_render_pass(SDL_GPUCommandBuffer *command_buffer);
void ta_shadow_shutdown(void);

#endif // TA_SHADOW_H