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blender/intern/cycles/kernel/svm/svm_wavelength.h

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Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
/*
* Adapted from Open Shading Language with this license:
*
* Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al.
* All Rights Reserved.
*
* Modifications Copyright 2013, 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
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
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* notice, this list of conditions and the following disclaimer.
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
* * Redistributions in binary form must reproduce the above copyright
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
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* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
* * Neither the name of Sony Pictures Imageworks nor the names of its
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
2013-06-10 21:55:41 +00:00
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
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* 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.
*/
CCL_NAMESPACE_BEGIN
/* Wavelength to RGB */
Cycles: change __device and similar qualifiers to ccl_device in kernel code. This to avoids build conflicts with libc++ on FreeBSD, these __ prefixed values are reserved for compilers. I apologize to anyone who has patches or branches and has to go through the pain of merging this change, it may be easiest to do these same replacements in your code and then apply/merge the patch. Ref T37477.
2013-11-15 23:17:10 +00:00
ccl_device void svm_node_wavelength(ShaderData *sd, float *stack, uint wavelength, uint color_out)
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
{
// CIE colour matching functions xBar, yBar, and zBar for
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
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// wavelengths from 380 through 780 nanometers, every 5
// nanometers. For a wavelength lambda in this range:
// cie_colour_match[(lambda - 380) / 5][0] = xBar
// cie_colour_match[(lambda - 380) / 5][1] = yBar
// cie_colour_match[(lambda - 380) / 5][2] = zBar
const float cie_colour_match[81][3] = {
Code cleanup: Add -Werror=float-conversion to Cycles
2014-05-02 21:22:14 +00:00
{0.0014f,0.0000f,0.0065f}, {0.0022f,0.0001f,0.0105f}, {0.0042f,0.0001f,0.0201f},
{0.0076f,0.0002f,0.0362f}, {0.0143f,0.0004f,0.0679f}, {0.0232f,0.0006f,0.1102f},
{0.0435f,0.0012f,0.2074f}, {0.0776f,0.0022f,0.3713f}, {0.1344f,0.0040f,0.6456f},
{0.2148f,0.0073f,1.0391f}, {0.2839f,0.0116f,1.3856f}, {0.3285f,0.0168f,1.6230f},
{0.3483f,0.0230f,1.7471f}, {0.3481f,0.0298f,1.7826f}, {0.3362f,0.0380f,1.7721f},
{0.3187f,0.0480f,1.7441f}, {0.2908f,0.0600f,1.6692f}, {0.2511f,0.0739f,1.5281f},
{0.1954f,0.0910f,1.2876f}, {0.1421f,0.1126f,1.0419f}, {0.0956f,0.1390f,0.8130f},
{0.0580f,0.1693f,0.6162f}, {0.0320f,0.2080f,0.4652f}, {0.0147f,0.2586f,0.3533f},
{0.0049f,0.3230f,0.2720f}, {0.0024f,0.4073f,0.2123f}, {0.0093f,0.5030f,0.1582f},
{0.0291f,0.6082f,0.1117f}, {0.0633f,0.7100f,0.0782f}, {0.1096f,0.7932f,0.0573f},
{0.1655f,0.8620f,0.0422f}, {0.2257f,0.9149f,0.0298f}, {0.2904f,0.9540f,0.0203f},
{0.3597f,0.9803f,0.0134f}, {0.4334f,0.9950f,0.0087f}, {0.5121f,1.0000f,0.0057f},
{0.5945f,0.9950f,0.0039f}, {0.6784f,0.9786f,0.0027f}, {0.7621f,0.9520f,0.0021f},
{0.8425f,0.9154f,0.0018f}, {0.9163f,0.8700f,0.0017f}, {0.9786f,0.8163f,0.0014f},
{1.0263f,0.7570f,0.0011f}, {1.0567f,0.6949f,0.0010f}, {1.0622f,0.6310f,0.0008f},
{1.0456f,0.5668f,0.0006f}, {1.0026f,0.5030f,0.0003f}, {0.9384f,0.4412f,0.0002f},
{0.8544f,0.3810f,0.0002f}, {0.7514f,0.3210f,0.0001f}, {0.6424f,0.2650f,0.0000f},
{0.5419f,0.2170f,0.0000f}, {0.4479f,0.1750f,0.0000f}, {0.3608f,0.1382f,0.0000f},
{0.2835f,0.1070f,0.0000f}, {0.2187f,0.0816f,0.0000f}, {0.1649f,0.0610f,0.0000f},
{0.1212f,0.0446f,0.0000f}, {0.0874f,0.0320f,0.0000f}, {0.0636f,0.0232f,0.0000f},
{0.0468f,0.0170f,0.0000f}, {0.0329f,0.0119f,0.0000f}, {0.0227f,0.0082f,0.0000f},
{0.0158f,0.0057f,0.0000f}, {0.0114f,0.0041f,0.0000f}, {0.0081f,0.0029f,0.0000f},
{0.0058f,0.0021f,0.0000f}, {0.0041f,0.0015f,0.0000f}, {0.0029f,0.0010f,0.0000f},
{0.0020f,0.0007f,0.0000f}, {0.0014f,0.0005f,0.0000f}, {0.0010f,0.0004f,0.0000f},
{0.0007f,0.0002f,0.0000f}, {0.0005f,0.0002f,0.0000f}, {0.0003f,0.0001f,0.0000f},
{0.0002f,0.0001f,0.0000f}, {0.0002f,0.0001f,0.0000f}, {0.0001f,0.0000f,0.0000f},
{0.0001f,0.0000f,0.0000f}, {0.0001f,0.0000f,0.0000f}, {0.0000f,0.0000f,0.0000f}
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
};
float lambda_nm = stack_load_float(stack, wavelength);
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
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float ii = (lambda_nm-380.0f) * (1.0f/5.0f); // scaled 0..80
int i = float_to_int(ii);
float3 color;
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
2013-06-10 21:55:41 +00:00
if (i < 0 || i >= 80) {
color = make_float3(0.0f, 0.0f, 0.0f);
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
}
else {
ii -= i;
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
2013-06-10 21:55:41 +00:00
const float *c = cie_colour_match[i];
color = interp(make_float3(c[0], c[1], c[2]), make_float3(c[3], c[4], c[5]), ii);
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
}
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
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color = xyz_to_rgb(color.x, color.y, color.z);
color *= 1.0f/2.52f; // Empirical scale from lg to make all comps <= 1
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
2013-06-10 21:55:41 +00:00
/* Clamp to zero if values are smaller */
color = max(color, make_float3(0.0f, 0.0f, 0.0f));
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
if(stack_valid(color_out))
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometers, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. * Code cleanup: ** Moved color functions (xyz and hsv) into dedicated utility files. ** Remove svm_lerp(), use interp() instead. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Wavelength Example render: http://www.pasteall.org/pic/show.php?id=53202 This is part of my GSoC 2013. (revisions 57322, 57326, 57335 and 57367 from soc-2013-dingto).
2013-06-10 21:55:41 +00:00
stack_store_float3(stack, color_out, color);
Cycles / Wavelength to RGB node: * Added a node to convert wavelength (in nanometer, from 380nm to 780nm) to RGB values. This can be useful to match real world colors easier. Example render: http://www.pasteall.org/pic/show.php?id=53202 ToDo: * Move some functions into an util file, maybe a common util_color.h or so. * Test GPU, unfortunately sm_21 doesn't work for me yet.
2013-06-09 20:46:22 +00:00
}
CCL_NAMESPACE_END
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