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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QRHIIMGUI_P_H
#define QRHIIMGUI_P_H
#include <rhi/qrhi.h>
QT_BEGIN_NAMESPACE
class QEvent;
class QRhiImguiRenderer
{
public:
~QRhiImguiRenderer();
struct CmdListBuffer {
quint32 offset;
QByteArray data;
};
struct DrawCmd {
int cmdListBufferIdx;
int textureIndex;
quint32 indexOffset;
quint32 elemCount;
QPointF itemPixelOffset;
QVector4D clipRect;
};
struct StaticRenderData {
QImage fontTextureData;
};
struct FrameRenderData {
quint32 totalVbufSize = 0;
quint32 totalIbufSize = 0;
QVarLengthArray<CmdListBuffer, 4> vbuf;
QVarLengthArray<CmdListBuffer, 4> ibuf;
QVarLengthArray<DrawCmd, 4> draw;
QSize outputPixelSize;
};
StaticRenderData sf;
FrameRenderData f;
void prepare(QRhi *rhi,
QRhiRenderTarget *rt,
QRhiCommandBuffer *cb,
const QMatrix4x4 &mvp,
float opacity = 1.0f,
float hdrWhiteLevelMultiplierOrZeroForSDRsRGB = 0.0f);
void render();
void releaseResources();
private:
QRhi *m_rhi = nullptr;
QRhiRenderTarget *m_rt = nullptr;
QRhiCommandBuffer *m_cb = nullptr;
std::unique_ptr<QRhiBuffer> m_vbuf;
std::unique_ptr<QRhiBuffer> m_ibuf;
std::unique_ptr<QRhiBuffer> m_ubuf;
std::unique_ptr<QRhiGraphicsPipeline> m_ps;
QVector<quint32> m_renderPassFormat;
std::unique_ptr<QRhiSampler> m_sampler;
struct Texture {
QImage image;
QRhiTexture *tex = nullptr;
QRhiShaderResourceBindings *srb = nullptr;
};
QVector<Texture> m_textures;
};
class QRhiImgui
{
public:
QRhiImgui();
~QRhiImgui();
using FrameFunc = std::function<void()>;
void nextFrame(const QSizeF &logicalOutputSize, float dpr, const QPointF &logicalOffset, FrameFunc frameFunc);
void syncRenderer(QRhiImguiRenderer *renderer);
bool processEvent(QEvent *e);
void rebuildFontAtlas();
private:
QRhiImguiRenderer::StaticRenderData sf;
QRhiImguiRenderer::FrameRenderData f;
Qt::MouseButtons pressedMouseButtons;
};
QT_END_NAMESPACE
#endif
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