forked from bartvdbraak/blender
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
51 lines
1.4 KiB
C
51 lines
1.4 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 __KERNEL_COMPAT_OPENCL_H__
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#define __KERNEL_COMPAT_OPENCL_H__
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#define __KERNEL_GPU__
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#define __KERNEL_OPENCL__
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#include "util_types.h"
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CCL_NAMESPACE_BEGIN
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#define __device
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#define __device_inline
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__device float kernel_tex_interp_(__global float *data, int width, float x)
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{
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x = clamp(x, 0.0f, 1.0f)*width;
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int index = min((int)x, width-1);
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int nindex = min(index+1, width-1);
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float t = x - index;
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return (1.0f - t)*data[index] + t*data[nindex];
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}
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#define kernel_data (*kg->data)
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#define kernel_tex_interp(t, x) \
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kernel_tex_interp_(kg->t, kg->t##_width, x);
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CCL_NAMESPACE_END
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#endif /* __KERNEL_COMPAT_OPENCL_H__ */
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