Vao.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include "AUI/GL/gl.h"
#include <glm/glm.hpp>
#include "AUI/Common/AVector.h"
#include "AUI/Util/AArrayView.h"
#include "AUI/Views.h"
 
namespace gl {
class API_AUI_VIEWS Vao {
public:
   struct Buffer {
       GLuint handle = 0;
       uint32_t signature = 0;   // signature used for optimization

       const char* lastModifierKey = nullptr;
   };
 
   Vao();
   ~Vao();
   Vao(const Vao&) = delete;
 
   [[nodiscard]]
   const AVector<Buffer>& getBuffers() const noexcept {
       return mBuffers;
   }
 
   void bind() const noexcept;
   static void unbind() noexcept;

   template <typename T>
   void insert(GLuint index, AArrayView<T> data, const char* key) {
       if constexpr (std::is_same_v<T, GLuint>) {
           insertInteger(index, (const char*) data.data(), data.sizeInBytes(), 1, GL_UNSIGNED_INT);
       } else {
           insert(index, (const char*) data.data(), data.sizeInBytes(), sizeof(T) / sizeof(float), GL_FLOAT, key);
       }
   }

   template <typename T>
   void insertIfKeyMismatches(GLuint index, AArrayView<T> data, const char* key) {
       insertIfKeyMismatches(
           index, (const char*) data.data(), data.sizeInBytes(), sizeof(T) / sizeof(float), GL_FLOAT, key);
   }

   void indices(AArrayView<uint32_t> data);

   void indices(AArrayView<uint16_t> data);
 
   void drawArrays(GLenum type, GLsizei count);

   void drawElements(GLenum type = GL_TRIANGLES);
 
private:
   GLuint mHandle;
   AVector<Buffer> mBuffers;
   GLuint mIndicesBuffer = 0;
   GLsizei mIndicesCount = 0;
   GLuint mIndicesType = 0;

   void
   insert(GLuint index, const char* data, GLsizeiptr dataSize, GLuint vertexSize, GLenum dataType, const char* key);

   void insertIfKeyMismatches(
       GLuint index, const char* data, GLsizeiptr dataSize, GLuint vertexSize, GLenum dataType, const char* key);

   void insertInteger(GLuint index, const char* data, GLsizeiptr dataSize, GLuint vertexSize, GLenum dataType);
};
}   // namespace gl

© 2025 AUI Framework Contributors. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. All trademarks are property of their respective owners.