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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2018 Blender Foundation.
*/
/** \file
* \ingroup eevee
*/
#pragma once
#include "MEM_guardedalloc.h"
#include "DNA_lightprobe_types.h"
#include "GPU_capabilities.h"
namespace blender::eevee {
/**
* Wrapper to blender lightcache structure.
* Used to define methods for the light cache.
**/
struct LightCache : public ::LightCache {
private:
constexpr static int min_cube_lod_level = 3;
/* Rounded to nearest PowerOfTwo */
constexpr static int irradiance_sample_size_x = 4; /* 3 in reality */
constexpr static int irradiance_sample_size_y = 2;
/* Manually encoded as RGBM. Also encodes visibility. */
constexpr static eGPUTextureFormat irradiance_format = GPU_RGBA8;
/* OpenGL 3.3 core requirement, can be extended but it's already very big */
constexpr static int irradiance_max_pool_layer = 256;
constexpr static int irradiance_max_pool_size = 1024;
constexpr static int max_irradiance_samples =
(irradiance_max_pool_size / irradiance_sample_size_x) *
(irradiance_max_pool_size / irradiance_sample_size_y);
constexpr static eGPUTextureFormat reflection_format = GPU_R11F_G11F_B10F;
public:
LightCache(const int cube_len,
const int grid_len,
const int cube_size,
const int vis_size,
const int irr_size[3]);
~LightCache();
static void irradiance_cache_size_get(int visibility_size, int total_samples, int r_size[3]);
static void update_info(SceneEEVEE *eevee);
int irradiance_cells_per_row_get(void) const;
bool load(void);
bool validate(const int cube_len,
const int cube_res,
const int grid_len,
const int irr_size[3]) const;
uint memsize_get(void) const;
int64_t irradiance_sample_count(void) const;
void readback_irradiance(void);
void readback_reflections(void);
private:
bool version_check(void) const;
bool can_be_saved(void) const;
bool load_static(void);
bool create_reflection_texture(void);
bool create_irradiance_texture(void);
MEM_CXX_CLASS_ALLOC_FUNCS("EEVEE:LightCache")
};
} // namespace blender::eevee
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