8d72aba9e3
A convenience subclass of QWindow that provides a Vulkan-capable window with a double-buffered FIFO swapchain. While advanced use cases are better served by a custom QWindow subclass, many applications can benefit from having a convenient helper that makes getting started easier. Add also three examples of increasing complexity, and a variant that shows embeddeding into widgets via QWindowContainer. [ChangeLog][QtGui] Added QVulkanWindow, a convenience subclass of QWindow. Task-number: QTBUG-55981 Change-Id: I6cdc9ff1390ac6258e278377233fd369a0bfeddc Reviewed-by: Andy Nichols <andy.nichols@qt.io>
109 lines
4.2 KiB
C++
109 lines
4.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2017 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** * Neither the name of The Qt Company Ltd nor the names of its
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QVulkanWindow>
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#include <QImage>
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class VulkanRenderer : public QVulkanWindowRenderer
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{
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public:
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VulkanRenderer(QVulkanWindow *w);
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void initResources() override;
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void initSwapChainResources() override;
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void releaseSwapChainResources() override;
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void releaseResources() override;
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void startNextFrame() override;
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private:
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VkShaderModule createShader(const QString &name);
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bool createTexture(const QString &name);
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bool createTextureImage(const QSize &size, VkImage *image, VkDeviceMemory *mem,
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VkImageTiling tiling, VkImageUsageFlags usage, uint32_t memIndex);
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bool writeLinearImage(const QImage &img, VkImage image, VkDeviceMemory memory);
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void ensureTexture();
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QVulkanWindow *m_window;
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QVulkanDeviceFunctions *m_devFuncs;
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VkDeviceMemory m_bufMem = VK_NULL_HANDLE;
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VkBuffer m_buf = VK_NULL_HANDLE;
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VkDescriptorBufferInfo m_uniformBufInfo[QVulkanWindow::MAX_CONCURRENT_FRAME_COUNT];
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VkDescriptorPool m_descPool = VK_NULL_HANDLE;
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VkDescriptorSetLayout m_descSetLayout = VK_NULL_HANDLE;
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VkDescriptorSet m_descSet[QVulkanWindow::MAX_CONCURRENT_FRAME_COUNT];
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VkPipelineCache m_pipelineCache = VK_NULL_HANDLE;
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VkPipelineLayout m_pipelineLayout = VK_NULL_HANDLE;
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VkPipeline m_pipeline = VK_NULL_HANDLE;
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VkSampler m_sampler = VK_NULL_HANDLE;
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VkImage m_texImage = VK_NULL_HANDLE;
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VkDeviceMemory m_texMem = VK_NULL_HANDLE;
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bool m_texLayoutPending = false;
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VkImageView m_texView = VK_NULL_HANDLE;
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VkImage m_texStaging = VK_NULL_HANDLE;
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VkDeviceMemory m_texStagingMem = VK_NULL_HANDLE;
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bool m_texStagingPending = false;
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QSize m_texSize;
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VkFormat m_texFormat;
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QMatrix4x4 m_proj;
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float m_rotation = 0.0f;
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};
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class VulkanWindow : public QVulkanWindow
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{
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public:
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QVulkanWindowRenderer *createRenderer() override;
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};
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