CE_OSDRefinement.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME: CE_OSDRefinement.h ( CE Library, C++)
 *
 * COMMENTS: OpenSubdiv refinement data for OpenCL-based subdivision.
 *
 */

#ifndef __CE_OSDRefinement__
#define __CE_OSDRefinement__

#include "CE_API.h"

#include <UT/UT_UniquePtr.h>
#include <opensubdiv/version.h>

class CE_Context;
class CE_OSDRefinement;
class CE_OSDRefinementState;


namespace OpenSubdiv {
    namespace OPENSUBDIV_VERSION {
        namespace Far {
            class TopologyRefiner;
        }
    }
}

CE_API UT_UniquePtr<CE_OSDRefinement>
CE_OSDCreateFromRefiner(
    const OpenSubdiv::Far::TopologyRefiner &refiner,
    CE_Context &context);

class CE_API CE_OSDRefinement
{
public:
    ~CE_OSDRefinement();
    CE_OSDRefinement(const CE_OSDRefinement &) = delete;
    CE_OSDRefinement &operator=(const CE_OSDRefinement &) = delete;

    int numCoarseVerts() const { return myNumCoarseVerts; }
    int numRefinedVerts() const { return myNumRefinedVerts; }

    const CE_OSDRefinementState *state() const { return myState.get(); }
    CE_OSDRefinementState *state() { return myState.get(); }

    bool hasStencilCL() const;

    /// CLPatchTable buffer accessors. Buffers are owned by this object
    /// (retained on construction) and valid for the lifetime of this
    /// CE_OSDRefinement.
    const cl::Buffer &patchArrayBuffer() const { return myPatchArrayBuf; }
    const cl::Buffer &patchIndexBuffer() const { return myPatchIndexBuf; }
    const cl::Buffer &patchParamBuffer() const { return myPatchParamBuf; }
    int               numPatchArrays() const;
    int               numPatchesTotal() const;

    CE_OSDRefinement(int num_coarse_verts, int num_refined_verts);

private:
    friend CE_API UT_UniquePtr<CE_OSDRefinement>
        CE_OSDCreateFromRefiner(const OpenSubdiv::Far::TopologyRefiner &,
                                CE_Context &);
    void initPatchBuffers();

    UT_UniquePtr<CE_OSDRefinementState> myState;
    int myNumCoarseVerts = 0;
    int myNumRefinedVerts = 0;
    cl::Buffer myPatchArrayBuf;
    cl::Buffer myPatchIndexBuf;
    cl::Buffer myPatchParamBuf;
};

#endif