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#ifndef OSD_D3D11_COMPUTE_KERNEL_BUNDLE_H
#define OSD_D3D11_COMPUTE_KERNEL_BUNDLE_H

#include "../version.h"

#include "../osd/nonCopyable.h"

struct ID3D11Buffer;
struct ID3D11ClassInstance;
struct ID3D11ClassLinkage;
struct ID3D11ComputeShader;
struct ID3D11DeviceContext;

namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {

    class OsdD3D11ComputeKernelBundle
        : OsdNonCopyable<OsdD3D11ComputeKernelBundle> {
    public:
        OsdD3D11ComputeKernelBundle(ID3D11DeviceContext *deviceContext);
        ~OsdD3D11ComputeKernelBundle();

        bool Compile(int numVertexElements, int numVaryingElements);

        void ApplyBilinearFaceVerticesKernel(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyBilinearEdgeVerticesKernel(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyBilinearVertexVerticesKernel(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyCatmarkFaceVerticesKernel(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyCatmarkEdgeVerticesKernel(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyCatmarkVertexVerticesKernelB(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyCatmarkVertexVerticesKernelA(
            int vertexOffset, int tableOffset, int start, int end, bool pass);

        void ApplyLoopEdgeVerticesKernel(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyLoopVertexVerticesKernelB(
            int vertexOffset, int tableOffset, int start, int end);

        void ApplyLoopVertexVerticesKernelA(
            int vertexOffset, int tableOffset, int start, int end, bool pass);

        void ApplyEditAdd(int primvarOffset, int primvarWidth,
                          int vertexOffset, int tableOffset, int start, int end);

        struct Match {
        Match(int numVertexElements, int numVaryingElements) :
            _numVertexElements(numVertexElements),
                _numVaryingElements(numVaryingElements) {}
            bool operator() (const OsdD3D11ComputeKernelBundle *kernel) {
                return (kernel->_numVertexElements == _numVertexElements
                        && kernel->_numVaryingElements == _numVaryingElements);
            }
            int _numVertexElements, _numVaryingElements;
        };

        friend struct Match;

    protected:
        struct KernelCB;
        void dispatchCompute(ID3D11ClassInstance * kernel, KernelCB const & args);

        ID3D11DeviceContext * _deviceContext;

        ID3D11ComputeShader * _computeShader;
        ID3D11ClassLinkage * _classLinkage;

        // constant buffer
        ID3D11Buffer * _kernelCB;

        // general face-vertex kernel (all schemes)
        ID3D11ClassInstance * _kernelComputeFace;
        // edge-vertex kernel (catmark + loop schemes)
        ID3D11ClassInstance * _kernelComputeEdge;
        // edge-vertex kernel (bilinear scheme)
        ID3D11ClassInstance * _kernelComputeBilinearEdge;
        // vertex-vertex kernel (bilinear scheme)
        ID3D11ClassInstance * _kernelComputeVertex;
        // vertex-vertex kernel A (catmark + loop schemes)
        ID3D11ClassInstance * _kernelComputeVertexA;
        // vertex-vertex kernel B (catmark scheme)
        ID3D11ClassInstance * _kernelComputeCatmarkVertexB;
        // vertex-vertex kernel B (loop scheme)
        ID3D11ClassInstance * _kernelComputeLoopVertexB;
        // hedit kernel (add)
        ID3D11ClassInstance * _kernelEditAdd;

        int _numVertexElements,
            _numVaryingElements;

        int _workGroupSize;
    };

}  // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;

}  // end namespace OpenSubdiv

#endif  // OSD_D3D11_COMPUTE_KERNEL_BUNDLE_H