C_vertexBuffer.hpp

/*
 * Copyright 2025 Guillaume Guillet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _FGE_VULKAN_C_VERTEXBUFFER_HPP_INCLUDED
#define _FGE_VULKAN_C_VERTEXBUFFER_HPP_INCLUDED
 
#include "FastEngine/fge_extern.hpp"
#include "C_vertex.hpp"
#include "FastEngine/C_rect.hpp"
#include "FastEngine/vulkan/C_contextAware.hpp"
#include "FastEngine/vulkan/vulkanGlobal.hpp"
#include <limits>
#include <vector>
 
#define FGE_VULKAN_VERTEX_DEFAULT_TOPOLOGY VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST
 
namespace fge::vulkan
{
 
class CommandBuffer;
 
enum class BufferTypes
{
    UNINITIALIZED,
    LOCAL,
    DEVICE,
 
    DEFAULT = LOCAL
};
 
class FGE_API VertexBuffer : public ContextAware
{
public:
    explicit VertexBuffer(Context const& context);
    VertexBuffer(VertexBuffer const& r);
    VertexBuffer(VertexBuffer&& r) noexcept;
    ~VertexBuffer() override;
 
    VertexBuffer& operator=(VertexBuffer const& r);
    VertexBuffer& operator=(VertexBuffer&& r) noexcept;
 
    void create(std::size_t vertexSize, VkPrimitiveTopology topology, BufferTypes type = BufferTypes::DEFAULT);
 
    void clear();
    void resize(std::size_t vertexSize);
    void append(Vertex const& vertex);
 
    void destroy() final;
 
    void bind(CommandBuffer& commandBuffer) const;
 
    [[nodiscard]] std::size_t getCount() const;
 
    [[nodiscard]] Vertex* getVertices();
    [[nodiscard]] Vertex const* getVertices() const;
 
    [[nodiscard]] Vertex& operator[](std::size_t index);
    [[nodiscard]] Vertex const& operator[](std::size_t index) const;
 
    void setPrimitiveTopology(VkPrimitiveTopology topology);
    [[nodiscard]] VkPrimitiveTopology getPrimitiveTopology() const;
 
    [[nodiscard]] VkBuffer getVerticesBuffer() const;
    [[nodiscard]] VmaAllocation getVerticesBufferAllocation() const;
 
    [[nodiscard]] BufferTypes getType() const;
 
    [[nodiscard]] fge::RectFloat getBounds() const; 
 
private:
    void mapBuffer() const;
    void cleanBuffer() const;
    void updateBuffer() const;
 
    std::vector<Vertex> g_vertices;
 
    mutable BufferInfo g_bufferInfo;
    mutable BufferInfo g_stagingBufferInfo;
    mutable std::size_t g_bufferCapacity;
 
    mutable bool g_needUpdate;
 
    BufferTypes g_type;
 
    mutable VkPrimitiveTopology g_primitiveTopology;
};
 
class FGE_API IndexBuffer : public ContextAware
{
public:
    explicit IndexBuffer(Context const& context);
    IndexBuffer(IndexBuffer const& r);
    IndexBuffer(IndexBuffer&& r) noexcept;
    ~IndexBuffer() override;
 
    IndexBuffer& operator=(IndexBuffer const& r);
    IndexBuffer& operator=(IndexBuffer&& r) noexcept;
 
    void create(std::size_t indexSize, BufferTypes type = BufferTypes::DEFAULT);
 
    void clear();
    void resize(std::size_t indexSize);
    void append(uint16_t index = std::numeric_limits<uint16_t>::max());
 
    void destroy() final;
 
    void bind(CommandBuffer& commandBuffer) const;
 
    [[nodiscard]] std::size_t getCount() const;
 
    [[nodiscard]] uint16_t* getIndices();
    [[nodiscard]] uint16_t const* getIndices() const;
 
    [[nodiscard]] uint16_t& operator[](std::size_t index);
    [[nodiscard]] uint16_t const& operator[](std::size_t index) const;
 
    [[nodiscard]] VkBuffer getIndicesBuffer() const;
    [[nodiscard]] VmaAllocation getIndicesBufferAllocation() const;
 
    [[nodiscard]] BufferTypes getType() const;
 
private:
    void mapBuffer() const;
    void cleanBuffer() const;
    void updateBuffer() const;
 
    std::vector<uint16_t> g_indices;
 
    mutable BufferInfo g_bufferInfo;
    mutable BufferInfo g_stagingBufferInfo;
    mutable std::size_t g_bufferCapacity;
 
    mutable bool g_needUpdate;
 
    BufferTypes g_type;
};
 
} // namespace fge::vulkan
 
#endif //_FGE_VULKAN_C_VERTEXBUFFER_HPP_INCLUDED