RixPattern.h

#ifndef RixPattern_h
#define RixPattern_h
/* $Revision: #3 $ $Date: 2015/10/30 $
# ------------------------------------------------------------------------------
#
# Copyright (c) 2013 Pixar Animation Studios. All rights reserved.
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# The information in this file (the "Software") is provided for the
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# whole or in part, without the prior written permission of
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#include "RixShading.h"

class RixPattern : public RixShadingPlugin
{
public:
    virtual int GetInterface() const { return k_RixPattern; }
    virtual int Init(RixContext &ctx, char const *pluginPath) = 0;
    virtual RixSCParamInfo const *GetParamTable() = 0;
    virtual RixSCParamInfo const *GetInstanceParamTable(char const *handle,
                                                   RtConstPointer instancedata,
                                                   RixParameterList const *)
    { return NULL; }

    virtual void Finalize(RixContext &ctx) = 0;

    struct OutputSpec
    {
        RtInt paramId;      
        RixSCDetail detail; 
        RtConstPointer value;
    };
    virtual int ComputeOutputParams(RixShadingContext const *sCtx,
                                    RtInt *n, OutputSpec **outputs,
                                    RtConstPointer instanceData,
                                    RixSCParamInfo const *instanceTable) = 0;

protected:
    RixPattern() : RixShadingPlugin(k_RixShadingVersion) {}
    virtual ~RixPattern() {}
};

#define RIX_PATTERNCREATE \
 extern "C" PRMANEXPORT RixPattern *CreateRixPattern(const char *hint)

#define RIX_PATTERNDESTROY \
 extern "C" PRMANEXPORT void DestroyRixPattern(RixPattern *pattern)

#endif