diff options
author | Ton Roosendaal <ton@blender.org> | 2011-04-27 15:58:34 +0400 |
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committer | Ton Roosendaal <ton@blender.org> | 2011-04-27 15:58:34 +0400 |
commit | da376e0237517543aa21740ee2363234ee1c20ae (patch) | |
tree | 014a513ed8d0eccc5e54fef42347781e85bae56a /intern/cycles/kernel/osl/bsdf_transparent.cpp | |
parent | 693780074388111e7b9ef1c3825e462f398dc6c4 (diff) |
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later.
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
Diffstat (limited to 'intern/cycles/kernel/osl/bsdf_transparent.cpp')
-rw-r--r-- | intern/cycles/kernel/osl/bsdf_transparent.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/bsdf_transparent.cpp b/intern/cycles/kernel/osl/bsdf_transparent.cpp new file mode 100644 index 00000000000..941abd6a483 --- /dev/null +++ b/intern/cycles/kernel/osl/bsdf_transparent.cpp @@ -0,0 +1,97 @@ +/* + * Adapted from Open Shading Language with this license: + * + * Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al. + * All Rights Reserved. + * + * Modifications Copyright 2011, Blender Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Sony Pictures Imageworks nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <OpenImageIO/fmath.h> + +#include <OSL/genclosure.h> + +#include "osl_closures.h" + +CCL_NAMESPACE_BEGIN + +using namespace OSL; + +class TransparentClosure : public BSDFClosure { +public: + TransparentClosure() : BSDFClosure(Labels::STRAIGHT, Back) { } + + void setup() {} + + size_t memsize () const { return sizeof(*this); } + + const char *name () const { return "transparent"; } + + void print_on (std::ostream &out) const { + out << name() << " ()"; + } + + float albedo (const Vec3 &omega_out) const + { + return 1.0f; + } + + Color3 eval_reflect (const Vec3 &omega_out, const Vec3 &omega_in, float& pdf) const + { + return Color3 (0, 0, 0); + } + + Color3 eval_transmit (const Vec3 &omega_out, const Vec3 &omega_in, float& pdf) const + { + return Color3 (0, 0, 0); + } + + ustring sample (const Vec3 &Ng, + const Vec3 &omega_out, const Vec3 &domega_out_dx, const Vec3 &domega_out_dy, + float randu, float randv, + Vec3 &omega_in, Vec3 &domega_in_dx, Vec3 &domega_in_dy, + float &pdf, Color3 &eval) const + { + // only one direction is possible + omega_in = -omega_out; + domega_in_dx = -domega_out_dx; + domega_in_dy = -domega_out_dy; + pdf = 1; + eval.setValue(1, 1, 1); + return Labels::TRANSMIT; + } +}; + + + +ClosureParam bsdf_transparent_params[] = { + CLOSURE_STRING_KEYPARAM("label"), + CLOSURE_FINISH_PARAM(TransparentClosure) }; + +CLOSURE_PREPARE(bsdf_transparent_prepare, TransparentClosure) + +CCL_NAMESPACE_END + |