imdl_backend_api.h

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/***************************************************************************************************
 * Copyright 2025 NVIDIA Corporation. All rights reserved.
 **************************************************************************************************/
 
#ifndef MI_NEURAYLIB_IMDL_BACKEND_API_H
#define MI_NEURAYLIB_IMDL_BACKEND_API_H
 
#include <mi/base/interface_declare.h>
 
namespace mi {
 
namespace neuraylib {
 
class IMdl_backend;
 
enum Df_data_kind {
    DFK_NONE,
    DFK_INVALID,
    DFK_SIMPLE_GLOSSY_MULTISCATTER,
    DFK_BACKSCATTERING_GLOSSY_MULTISCATTER,
    DFK_BECKMANN_SMITH_MULTISCATTER,
    DFK_BECKMANN_VC_MULTISCATTER,
    DFK_GGX_SMITH_MULTISCATTER,
    DFK_GGX_VC_MULTISCATTER,
    DFK_WARD_GEISLER_MORODER_MULTISCATTER,
    DFK_SHEEN_MULTISCATTER,
    DFK_MICROFLAKE_SHEEN_GENERAL,
    DFK_MICROFLAKE_SHEEN_MULTISCATTER,
    DFK_FORCE_32_BIT = 0xffffffffU
};
 
mi_static_assert(sizeof(Df_data_kind) == sizeof(Uint32));
 
class IMdl_backend_api : public
    mi::base::Interface_declare<0x425559dd,0xbf91,0x459a,0xaa,0xaf,0xc3,0x14,0x8a,0x5a,0x2f,0x99>
{
public:
 
    enum Mdl_backend_kind {
        MB_CUDA_PTX,          
        MB_LLVM_IR,           
        MB_GLSL,              
        MB_NATIVE,            
        MB_HLSL,              
        MB_FORCE_32_BIT = 0xffffffffU //   Undocumented, for alignment only
    };
 
    virtual IMdl_backend* get_backend(Mdl_backend_kind kind) = 0;
 
 
    virtual const Float32* get_df_data_texture(
        Df_data_kind kind,
        Size &rx,
        Size &ry,
        Size &rz,
        const char *&pixel_type) const = 0;
};
 // end group mi_neuray_mdl_misc
 
} // namespace neuraylib
 
} // namespace mi
 
#endif // MI_NEURAYLIB_IMDL_BACKEND_API_H