shader_sds34.h

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00001 
00002 // Copyright 1986-2011 by mental images GmbH, Fasanenstr. 81, D-10623 Berlin,
00003 // Germany. All rights reserved.
00005 // Created:     9.10.08
00006 // Module:      api
00007 // Purpose:     mental ray C++ shader interface extensions
00009 
00019 
00020 
00021 #ifndef SHADER_SDS34_H
00022 #define SHADER_SDS34_H
00023 
00024 namespace mi {
00025 namespace shader_v3 {
00026 
00036 
00037 class Subdivision34 {
00038   public:
00039 
00042     enum Space_type {POS, TEXTURE, MOTION};
00043 
00045     virtual miUint get_no_spaces() const = 0;
00046 
00049     virtual miUint get_dimension(miUint space) const = 0;
00050 
00053     virtual Space_type get_space_type(miUint space) const = 0;
00054 
00057     virtual miUint get_no_vectors(miUint space) const = 0;
00058 
00065     virtual const miScalar * get_vector(
00066             miUint      space,
00067             miUint      which) const = 0;       // vector
00068 
00070     virtual miUint get_no_triangles() const = 0;
00071 
00073     virtual miUint get_no_quads() const = 0;
00074 
00080     struct Face {
00081             const miUint *      m_vertices;     // ret 3 or 4 indices
00082             miTag               m_material;     // face material
00083     };
00084 
00089     virtual const Face get_triangle(
00090             miUint      space,
00091             miUint      which) const = 0;       // triangle
00092 
00097     virtual const Face get_quad(
00098             miUint      space,
00099             miUint      which) const = 0;       // quad
00100 
00106     virtual bool get_triangle_derivatives(
00107             miUint      face,                   // triangle
00108             miUint      which,                  // vertex 0-2
00109             miVector    derivs[2]) = 0;         // result du dv vectors
00110 
00116     virtual bool get_quad_derivatives(
00117             miUint      face,                   // quad
00118             miUint      which,                  // vertex 0-3
00119             miVector    derivs[2]) = 0;         // result du dv vectors
00120 };
00121 
00124 class Access_subdivision34 {
00125   public:
00126     Access_subdivision34(
00127         miTag tag);
00128 
00129     ~Access_subdivision34();
00130 
00131     Subdivision34 * operator->() const;
00132 
00133   private:
00134     Access_subdivision34(const Access_subdivision34&);
00135     Access_subdivision34 & operator=(const Access_subdivision34&);
00136     mi::shader_v3::Interface *  m_iface;
00137     Subdivision34 *             m_sds34;
00138     const miTag                 m_tag;
00139 };
00140 
00144 typedef Access_subdivision34 Subdivision34_access;
00145 
00147 inline Access_subdivision34::Access_subdivision34(
00148     miTag       tag)
00149   : m_iface(mi_get_shader_interface()),
00150     m_sds34(m_iface->accessSubdivision34(tag)),
00151     m_tag(tag)
00152 {
00153 }
00154 
00156 inline Access_subdivision34::~Access_subdivision34()
00157 {
00158     if (m_sds34 != 0)
00159         m_iface->releaseSubdivision34(m_sds34);
00160     m_iface->release();
00161 }
00162 
00164 inline Subdivision34 * Access_subdivision34::operator->() const
00165 {
00166     return m_sds34;
00167 }
00168 
00169 }}
00170 
00171 #endif //SHADER_SDS34_H

Copyright © 1986-2011 by mental images GmbH