viewOverrideSimple/viewOverrideSimple.h

#ifndef viewOverrideSimple_h_
#define viewOverrideSimple_h_
//-
// Copyright 2015 Autodesk, Inc.  All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license agreement
// provided at the time of installation or download, or which otherwise
// accompanies this software in either electronic or hard copy form.
//+
#include <maya/MString.h>
#include <maya/MViewport2Renderer.h>

//
// Simple override class derived from MRenderOverride
//
class viewOverrideSimple : public MHWRender::MRenderOverride
{
public:
    viewOverrideSimple( const MString & name );
    ~viewOverrideSimple() override;
    MHWRender::DrawAPI supportedDrawAPIs() const override;

    // Basic setup and cleanup
    MStatus setup( const MString & destination ) override;
    MStatus cleanup() override;

    // Operation iteration methods
    bool startOperationIterator() override;
    MHWRender::MRenderOperation * renderOperation() override;
    bool nextRenderOperation() override;

    // UI name
    MString uiName() const override
    {
        return mUIName;
    }
    
protected:
    // UI name 
    MString mUIName;

    // Operations and operation names
    MHWRender::MRenderOperation* mOperations[3];
    MString mOperationNames[3];

    // Temporary of operation iteration
    int mCurrentOperation;
};

//
// Simple scene operation override to allow for clear color
// tracking.
//
class simpleViewRenderSceneRender : public MHWRender::MSceneRender
{
public:
    simpleViewRenderSceneRender(const MString &name);
    MHWRender::MClearOperation & clearOperation() override;
};

#endif