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Diffstat (limited to 'examples/gui/rhiwindow/rhiwindow.h')
-rw-r--r-- | examples/gui/rhiwindow/rhiwindow.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/examples/gui/rhiwindow/rhiwindow.h b/examples/gui/rhiwindow/rhiwindow.h new file mode 100644 index 0000000000..520c3e8c0a --- /dev/null +++ b/examples/gui/rhiwindow/rhiwindow.h @@ -0,0 +1,78 @@ +// Copyright (C) 2020 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#ifndef WINDOW_H +#define WINDOW_H + +#include <QWindow> +#include <QOffscreenSurface> +#include <rhi/qrhi.h> + +class RhiWindow : public QWindow +{ +public: + RhiWindow(QRhi::Implementation graphicsApi); + QString graphicsApiName() const; + void releaseSwapChain(); + +protected: + virtual void customInit() = 0; + virtual void customRender() = 0; + + // destruction order matters to a certain degree: the fallbackSurface must + // outlive the rhi, the rhi must outlive all other resources. The resources + // need no special order when destroying. +#if QT_CONFIG(opengl) + std::unique_ptr<QOffscreenSurface> m_fallbackSurface; +#endif + std::unique_ptr<QRhi> m_rhi; +//! [swapchain-data] + std::unique_ptr<QRhiSwapChain> m_sc; + std::unique_ptr<QRhiRenderBuffer> m_ds; + std::unique_ptr<QRhiRenderPassDescriptor> m_rp; +//! [swapchain-data] + bool m_hasSwapChain = false; + QMatrix4x4 m_viewProjection; + +private: + void init(); + void resizeSwapChain(); + void render(); + + void exposeEvent(QExposeEvent *) override; + bool event(QEvent *) override; + + QRhi::Implementation m_graphicsApi; + bool m_initialized = false; + bool m_notExposed = false; + bool m_newlyExposed = false; +}; + +class HelloWindow : public RhiWindow +{ +public: + HelloWindow(QRhi::Implementation graphicsApi); + + void customInit() override; + void customRender() override; + +private: + void ensureFullscreenTexture(const QSize &pixelSize, QRhiResourceUpdateBatch *u); + + std::unique_ptr<QRhiBuffer> m_vbuf; + std::unique_ptr<QRhiBuffer> m_ubuf; + std::unique_ptr<QRhiTexture> m_texture; + std::unique_ptr<QRhiSampler> m_sampler; + std::unique_ptr<QRhiShaderResourceBindings> m_colorTriSrb; + std::unique_ptr<QRhiGraphicsPipeline> m_colorPipeline; + std::unique_ptr<QRhiShaderResourceBindings> m_fullscreenQuadSrb; + std::unique_ptr<QRhiGraphicsPipeline> m_fullscreenQuadPipeline; + + QRhiResourceUpdateBatch *m_initialUpdates = nullptr; + + float m_rotation = 0; + float m_opacity = 1; + int m_opacityDir = -1; +}; + +#endif |