SoftwareRenderingContext.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/Platform/CommonRenderingContext.h>
#include <AUI/Platform/AWindow.h>
 
class API_AUI_VIEWS SoftwareRenderingContext: public aui::noncopyable, public CommonRenderingContext {
public:
   SoftwareRenderingContext();
   ~SoftwareRenderingContext() override;
 
#if !AUI_PLATFORM_LINUX
   // to be implemented by IPlatformAbstraction
   void init(const Init& init) override;
   void destroyNativeWindow(AWindowBase& window) override;
#endif
 
   void beginPaint(AWindowBase& window) override;
   void endPaint(AWindowBase& window) override;
   void beginResize(AWindowBase& window) override;
 
   IRenderer& renderer() override;
 
   AImage makeScreenshot() override;
 
   inline uint8_t& stencil(const glm::uvec2& position) {
       return mStencilBlob.at<uint8_t>(mBitmapSize.x * position.y + position.x);
   }
 
   [[nodiscard]]
   glm::uvec2 bitmapSize() const {
       return mBitmapSize;
   }
 
   inline void putPixel(const glm::uvec2& position, const glm::u8vec3& color) noexcept {
       putPixel(position, glm::u8vec4(color, 255));
   }
#if AUI_PLATFORM_WIN
   inline void putPixel(const glm::uvec2& position, const glm::u8vec4& color) noexcept {
       AUI_ASSERTX(glm::all(glm::lessThan(position, mBitmapSize)), "image out of bounds");
 
       auto dataPtr = reinterpret_cast<uint8_t*>(mBitmapBlob.data() + sizeof(BITMAPINFO)
           + (mBitmapSize.x * position.y + position.x) * 4);
       dataPtr[0] = color[2];
       dataPtr[1] = color[1];
       dataPtr[2] = color[0];
       dataPtr[3] = color[3];
   }
   inline glm::u8vec4 getPixel(const glm::uvec2& position) noexcept {
       AUI_ASSERTX(glm::all(glm::lessThan(position, mBitmapSize)), "image out of bounds");
 
       auto dataPtr = reinterpret_cast<uint8_t*>(mBitmapBlob.data() + sizeof(BITMAPINFO)
                                                 + (mBitmapSize.x * position.y + position.x) * 4);
 
       return { dataPtr[2], dataPtr[1], dataPtr[0], dataPtr[3] };
   }
#else
   inline void putPixel(const glm::uvec2& position, const glm::u8vec4& color) noexcept {
       AUI_ASSERTX(glm::all(glm::lessThan(position, mBitmapSize)), "image out of bounds");
 
       auto dataPtr = reinterpret_cast<uint8_t*>(mBitmapBlob + (mBitmapSize.x * position.y + position.x) * 4);
       dataPtr[0] = color[2];
       dataPtr[1] = color[1];
       dataPtr[2] = color[0];
       dataPtr[3] = color[3];
   }
   inline glm::u8vec4 getPixel(const glm::uvec2& position) noexcept {
       AUI_ASSERTX(glm::all(glm::lessThan(position, mBitmapSize)), "image out of bounds");
 
       auto dataPtr = reinterpret_cast<uint8_t*>(mBitmapBlob + (mBitmapSize.x * position.y + position.x) * 4);
       return {
           dataPtr[2],
           dataPtr[1],
           dataPtr[0],
           dataPtr[3],
       };
   }
#endif
 
   void endResize(AWindowBase& window) override;
 
protected:
   AByteBuffer mStencilBlob;
   glm::uvec2 mBitmapSize;
#if AUI_PLATFORM_LINUX
   std::uint8_t* mBitmapBlob = nullptr;
#endif
 
   void reallocate(const AWindowBase& window);
   virtual void reallocate();
 
private:
#if AUI_PLATFORM_WIN
   AByteBuffer mBitmapBlob;
   BITMAPINFO* mBitmapInfo;
#endif
#if AUI_PLATFORM_ANDROID || AUI_PLATFORM_APPLE || AUI_PLATFORM_EMSCRIPTEN
   std::uint8_t* mBitmapBlob = nullptr;
#endif
};

© 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.