/*************************************************************************/
/*  framebuffer_cache_rd.cpp                                             */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "framebuffer_cache_rd.h"

FramebufferCacheRD *FramebufferCacheRD::singleton = nullptr;

void FramebufferCacheRD::_invalidate(Cache *p_cache) {
	if (p_cache->prev) {
		p_cache->prev->next = p_cache->next;
	} else {
		// At beginning of table
		uint32_t table_idx = p_cache->hash % HASH_TABLE_SIZE;
		hash_table[table_idx] = p_cache->next;
	}

	if (p_cache->next) {
		p_cache->next->prev = p_cache->prev;
	}

	cache_allocator.free(p_cache);
	cache_instances_used--;
}
void FramebufferCacheRD::_framebuffer_invalidation_callback(void *p_userdata) {
	singleton->_invalidate(reinterpret_cast<Cache *>(p_userdata));
}

FramebufferCacheRD::FramebufferCacheRD() {
	ERR_FAIL_COND(singleton != nullptr);
	singleton = this;
}

FramebufferCacheRD::~FramebufferCacheRD() {
	if (cache_instances_used > 0) {
		ERR_PRINT("At exit: " + itos(cache_instances_used) + " framebuffer cache instance(s) still in use.");
	}
}