TextureRenderTarget.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/Util/kAUI.h>
#include <AUI/GL/Framebuffer.h>
#include <AUI/GL/GLEnums.h>
 
namespace gl {
 
   template<InternalFormat internalFormat /* = GL_DEPTH_COMPONENT24 */,
            Type type                     /* = GL_FLOAT */,
            Format format                    = Format::DEPTH_COMPONENT>
   class TextureRenderTarget final: public Framebuffer::IRenderTarget {
   public:
       TextureRenderTarget() {
       }
 
       void bindAsTexture(int index) {
           mTexture.bind(index);
       }
 
       void attach(Framebuffer& to, GLenum attachmentType) override {
           to.bind();
           glGetError();
           onFramebufferResize(to.size());
           glFramebufferTexture2D(GL_FRAMEBUFFER, attachmentType, GL_TEXTURE_2D, mTexture.getHandle(), 0);
           if (glGetError() != GL_NO_ERROR) {
               throw AException("unable to create texture target");
           }
       }
 
       [[nodiscard]]
       Texture2D& texture() noexcept {
           return mTexture;
       }
 
       void onFramebufferResize(glm::u32vec2 size) override {
           mTexture.framebufferTex2D(size, type);
       }
 
   private:
       Texture2D mTexture;
   };
}

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