qt-everywhere-src-5.14.1/qtquick3d/src/runtimerender/qssgrendererutil_p.h

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#ifndef QSSG_RENDERER_UTIL_H
#define QSSG_RENDERER_UTIL_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtQuick3DRender/private/qssgrenderbasetypes_p.h>

QT_BEGIN_NAMESPACE

class QSSGResourceManager;
class QSSGResourceTexture2D;
class QSSGRenderContext;

class QSSGRendererUtil
{
    static const qint16 MAX_SSAA_DIM = 8192; // max render traget size for SSAA mode

public:
    static void resolveMutisampleFBOColorOnly(const QSSGRef<QSSGResourceManager> &inManager,
                                              QSSGResourceTexture2D &ioResult,
                                              QSSGRenderContext &inRenderContext,
                                              qint32 inWidth,
                                              qint32 inHeight,
                                              QSSGRenderTextureFormat inColorFormat,
                                              const QSSGRef<QSSGRenderFrameBuffer> &inSourceFBO);

    static void resolveSSAAFBOColorOnly(const QSSGRef<QSSGResourceManager> &inManager,
                                        QSSGResourceTexture2D &ioResult,
                                        qint32 outWidth,
                                        qint32 outHeight,
                                        QSSGRenderContext &inRenderContext,
                                        qint32 inWidth,
                                        qint32 inHeight,
                                        QSSGRenderTextureFormat inColorFormat,
                                        const QSSGRef<QSSGRenderFrameBuffer> &inSourceFBO);

    static void getSSAARenderSize(qint32 inWidth, qint32 inHeight, qint32 &outWidth, qint32 &outHeight);

    static quint32 nextMultipleOf4(quint32 value) {
        return (value + 3) & ~3;
    }
};
QT_END_NAMESPACE

#endif