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/subd/subd_stencil.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/subd/subd_stencil.cpp')
-rw-r--r-- | intern/cycles/subd/subd_stencil.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/intern/cycles/subd/subd_stencil.cpp b/intern/cycles/subd/subd_stencil.cpp new file mode 100644 index 00000000000..599a745eebb --- /dev/null +++ b/intern/cycles/subd/subd_stencil.cpp @@ -0,0 +1,103 @@ +/* + * Copyright 2011, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include "subd_stencil.h" + +#include "util_debug.h" +#include "util_math.h" + +CCL_NAMESPACE_BEGIN + +StencilMask::StencilMask() +{ +} + +StencilMask::StencilMask(int size) +{ + /* initialize weights to zero. */ + weights.resize(size, 0.0f); +} + +void StencilMask::resize(int size) +{ + weights.resize(size, 0.0f); +} + +StencilMask& StencilMask::operator=(float value) +{ + const int size = weights.size(); + for(int i = 0; i < size; i++) + weights[i] = value; + + return *this; +} + +void StencilMask::operator+=(const StencilMask& mask) +{ + assert(mask.size() == size()); + + const int size = weights.size(); + for(int i = 0; i < size; i++) + weights[i] += mask.weights[i]; +} + +void StencilMask::operator-=(const StencilMask& mask) +{ + assert(mask.size() == size()); + + const int size = weights.size(); + for(int i = 0; i < size; i++) + weights[i] -= mask.weights[i]; +} + +void StencilMask::operator*=(float scale) +{ + const int size = weights.size(); + + for(int i = 0; i < size; i++) + weights[i] *= scale; +} + +void StencilMask::operator/=(float scale) +{ + *this *= 1.0f/scale; +} + +float StencilMask::sum() const +{ + float total = 0.0f; + const int size = weights.size(); + + for(int i = 0; i < size; i++) + total += weights[i]; + + return total; +} + +bool StencilMask::is_normalized() const +{ + return fabsf(sum() - 1.0f) < 0.0001f; +} + +void StencilMask::normalize() +{ + *this /= sum(); +} + +CCL_NAMESPACE_END + |