da376e0237
Cycles uses code from some great open source projects, many thanks them: * BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs": http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ * Open Shading Language for a large part of the shading system: http://code.google.com/p/openshadinglanguage/ * Blender for procedural textures and a few other nodes. * Approximate Catmull Clark subdivision from NVidia Mesh tools: http://code.google.com/p/nvidia-mesh-tools/ * Sobol direction vectors from: http://web.maths.unsw.edu.au/~fkuo/sobol/ * Film response functions from: http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __SUBD_BUILD_H__
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#define __SUBD_BUILD_H__
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CCL_NAMESPACE_BEGIN
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class SubdFace;
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class SubdFaceRing;
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class SubdVert;
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class GregoryAccStencil;
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class Patch;
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class StencilMask;
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/* Builder */
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class SubdBuilder
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{
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public:
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virtual ~SubdBuilder() {};
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virtual Patch *run(SubdFace *face) = 0;
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static SubdBuilder *create(bool linear);
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};
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/* Approximate Catmull Clark using Loop's approximation */
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class SubdAccBuilder : public SubdBuilder
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{
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public:
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SubdAccBuilder();
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~SubdAccBuilder();
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Patch *run(SubdFace *face);
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protected:
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/* Gregory Patch */
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void computeCornerStencil(SubdFaceRing *ring, GregoryAccStencil *stencil);
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void computeEdgeStencil(SubdFaceRing *ring, GregoryAccStencil *stencil);
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void computeInteriorStencil(SubdFaceRing *ring, GregoryAccStencil *stencil);
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void computeBoundaryTangentStencils(SubdFaceRing *ring,
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SubdVert *vert,
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StencilMask & r0, StencilMask & r1);
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};
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/* Linear Subdivision */
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class SubdLinearBuilder : public SubdBuilder
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{
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public:
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SubdLinearBuilder();
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~SubdLinearBuilder();
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Patch *run(SubdFace *face);
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};
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CCL_NAMESPACE_END
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#endif /* __SUBD_BUILD_H__ */
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