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MobileGL/MobileGL/MG_Backend/DirectVulkan/Renderer/VertexInputStateFactory.h
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// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VertexInputStateFactory.h
// Copyright (c) 2025-2026 MobileGL-Dev
// Licensed under the GNU Lesser General Public License v3.0:
// https://www.gnu.org/licenses/gpl-3.0.txt
// https://www.gnu.org/licenses/lgpl-3.0.txt
// SPDX-License-Identifier: LGPL-3.0-only
// End of Source File Header
#pragma once
#include "Config.h"
#include "VertexInputStateBuilder.h"
#include "MG_State/GLState/VertexArrayState/VertexArrayObject.h"
#include <Includes.h>
#include "../VkIncludes.h"
namespace MobileGL::MG_Backend::DirectVulkan {
class VertexInputStateFactory {
public:
using HashType = Uint64;
struct BackendVertexInputState {
HashType hash = 0;
Vector<VkVertexInputBindingDescription> bindings;
Vector<VkVertexInputAttributeDescription> attributes;
Vector<SizeT> bindingBufferKeys;
VkPipelineVertexInputStateCreateInfo state{
VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO
};
};
explicit VertexInputStateFactory(const VulkanRendererConfig& config):
m_config(config) {}
~VertexInputStateFactory() = default;
VertexInputStateFactory(const VertexInputStateFactory&) = delete;
HashType ComputeHash(const MG_State::GLState::VertexArrayObject& vao) const;
const BackendVertexInputState& GetOrCreateVertexInputState(const MG_State::GLState::VertexArrayObject& vao);
private:
static VkFormat ToVkVertexFormat(DataType type, Int size, Bool normalized, Bool isInteger);
static SizeT GetComponentSize(DataType type);
const VulkanRendererConfig& m_config;
UnorderedMap<HashType, BackendVertexInputState> m_cache;
static inline XXH64_state_t* m_hashState = XXH64_createState();
};
} // namespace MobileGL::MG_Backend::DirectVulkan