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2014-06-14Cycles: glossy and anisotropic BSDF changesBrecht Van Lommel
* Anisotropic BSDF now supports GGX and Beckmann distributions, Ward has been removed because other distributions are superior. * GGX is now the default distribution for all glossy and anisotropic nodes, since it looks good, has low noise and is fast to evaluate. * Ashikhmin-Shirley is now available in the Glossy BSDF.
2014-06-14Cycles: Ashikhmin-Shirley anisotropic BSDFKarsten Schwenk
* Ashikhmin-Shirley anisotropic BSDF was added as closure * Anisotropic BSDF node now has two distributions Reviewers: brecht, dingto Differential Revision: https://developer.blender.org/D549
2014-06-13Cycles: Add dedicated nodes to split/combine vectors.Thomas Dinges
This was already possible via the RGB nodes, but that seems weird.
2014-05-30Cleanup: Remove unused total power Emission code in Cycles, that was never ↵Thomas Dinges
exposed in the UI. Differential Revision: https://developer.blender.org/D562
2014-05-28Fix T40386: cycles anisotropic BSDF difference between SVM and OSL.Brecht Van Lommel
2014-05-07Nodes: add absolute value operation to all math nodesMatt Heimlich
Reviewed By: dingto, brecht Differential Revision: https://developer.blender.org/D507
2014-04-29Fix for wrong behavior of 'darken' blend mode with factor.Kevin Dietrich
The formula was not consistent across Blender and behaved strangely, now it is a simple linear blend between color1 and min(color1, color2). Reviewed By: brecht Differential Revision: https://developer.blender.org/D489
2014-04-27Code cleanup: style, unused importCampbell Barton
2014-04-21Cycles: add Transparent Depth output to Light Path node.Carlo Andreacchio
This can for example be useful if you want to manually terminate the path at some point and use a color other than black. Reviewed By: brecht Differential Revision: https://developer.blender.org/D454
2014-04-21Fix new Cycles UV Map node not working correct for bump mapping.Kevin Dietrich
Reviewed By: brecht Differential Revision: https://developer.blender.org/D475
2014-04-15Fix T39284: clamp cycles volume density to be >= 0, to avoid accidental ↵Brecht Van Lommel
strange shading.
2014-04-02Cycles: add dedicated UV Map node, easier to find and has convenient auto ↵Kevin Dietrich
complete. Fixes T37954. Reviewed By: brecht, dingto Differential Revision: https://developer.blender.org/D230
2014-03-08Add support for multiple interpolation modes on cycles image texturesMartijn Berger
All textures are sampled bi-linear currently with the exception of OSL there texture sampling is fixed and set to smart bi-cubic. This patch adds user control to this setting. Added: - bits to DNA / RNA in the form of an enum for supporting multiple interpolations types - changes to the image texture node drawing code ( add enum) - to ImageManager (this needs to know to allocate second texture when interpolation type is different) - to node compiler (pass on interpolation type) - to device tex_alloc this also needs to get the concept of multiple interpolation types - implementation for doing non interpolated lookup for cuda and cpu - implementation where we pass this along to osl ( this makes OSL also do linear untill I add smartcubic to the interface / DNA/ RNA) Reviewers: brecht, dingto Reviewed By: brecht CC: dingto, venomgfx Differential Revision: https://developer.blender.org/D317
2014-02-03Fix T38439: allow IOR in range [0, inf] instead of [1, inf] in Cycles.Brecht Van Lommel
The same can be achieved by flipping normals on the mesh, but it can be convenient to do this in the shader.
2014-01-14Cycles: Fix Wave texture difference between OSL and SVM, OSL wasn't using ↵Thomas Dinges
the "Scale" properly for distortion.
2014-01-06Code Cleanup: osl styleCampbell Barton
2013-12-31Cycles Volume Render: generated texture coordinates for volume render.Brecht Van Lommel
This does not support staying fixed while the surface deforms, but for static meshes it should match up with the surface texture coordinates. Implemented as a matrix transform from objects space to mesh texture space. Making this work for deforming surfaces would be quite complicated, you might need something like harmonic coordinates as used in the mesh deform modifier, probably will not be possible anytime soon.
2013-12-28Cycles Volume Render: work on nodes and closures.Brecht Van Lommel
* Henyey-Greenstein scattering closure implementation. * Rename transparent to absorption node and isotropic to scatter node. * Volume density is folded into the closure weights. * OSL support for volume closures and nodes. * This commit has no user visible changes, there is no volume render code yet. This is work by "storm", Stuart Broadfoot, Thomas Dinges and myself.
2013-12-08Cycles: Update stdosl.h to OSL 1.4.0. (includes new aastep functions).Thomas Dinges
2013-10-23Fix for OSL bug reported on IRC by Pablo Vasquez: Clamp option of the math ↵Lukas Toenne
node in OSL produces bad results. Really stupid bug, OSL math node was assigning the clamped 1st input value instead of the clamped result of the actual operation.
2013-10-10style cleanupCampbell Barton
2013-10-10* Code cleanup for M_PI code.Thomas Dinges
2013-10-10Fix windows scons OSL build error, just use quotes now instead of array.Brecht Van Lommel
2013-10-09Fix OSL shader build failing with spaces in the path to build directory,Brecht Van Lommel
patch by Campbell.
2013-09-30Fix [#36863] OSL clamp, min and max functions have wrong signature when ↵Thomas Dinges
arguments are integers * This was fixed in OSL 1.3.2, but we used an outdated stdosl.h.
2013-09-16Cycles Hair: Two basic bair shaders addedStuart Broadfoot
A new hair bsdf node, with two closure options, is added. These closures allow the generation of the reflective and transmission components of hair. The node allows control of the highlight colour, roughness and angular shift. Llimitations include: -No glint or fresnel adjustments. -The 'offset' is un-used when triangle primitives are used.
2013-09-04Cycles: add a sharpness input to the Cubic SSS falloff. When set to 1 this willBrecht Van Lommel
give a result more similar to the Compatible falloff option. The scale is x2 though to keep the perceived scatter radius roughly the same while changing the sharpness. Difference with compatible will be mainly on non-flat geometry.
2013-08-28Cycles / Sky Texture:Thomas Dinges
* Added a new sky model by Hosek and Wilkie: "An Analytic Model for Full Spectral Sky-Dome Radiance" http://cgg.mff.cuni.cz/projects/SkylightModelling/ Example render: http://archive.dingto.org/2013/blender/code/new_sky_model.png Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Textures#Sky_Texture Details: * User can choose between the older Preetham and the new Hosek / Wilkie model via a dropdown. For older files, backwards compatibility is preserved. When we add a new Sky texture, it defaults to the new model though. * For the new model, you can specify the ground albedo (see documentation for details). * Turbidity now has a UI soft range between 1 and 10, higher values (up to 30) are still possible, but can result in weird colors or black. * Removed the limitation of 1 sky texture per SVM stack. (Patch by Lukas Tönne, thanks!) Thanks to Brecht for code review and some help! This is part of my GSoC 2013 project, SVN merge of r59214, r59220, r59251 and r59601.
2013-08-19Cycles / SSS:Thomas Dinges
* OSL rendered Black with Compatible Fallof option, fixed. Note: OSL uses compatible scattering when "Compatible" or "Bicubic" is selected. I guess compatible will be removed later? If not we need to fix this properly.
2013-08-18Cycles: relicense GNU GPL source code to Apache version 2.0.Brecht Van Lommel
More information in this post: http://code.blender.org/ Thanks to all contributes for giving their permission!
2013-08-18Cycles: Subsurface ScatteringBrecht Van Lommel
New features: * Bump mapping now works with SSS * Texture Blur factor for SSS, see the documentation for details: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Shaders#Subsurface_Scattering Work in progress for feedback: Initial implementation of the "BSSRDF Importance Sampling" paper, which uses a different importance sampling method. It gives better quality results in many ways, with the availability of both Cubic and Gaussian falloff functions, but also tends to be more noisy when using the progressive integrator and does not give great results with some geometry. It works quite well for the non-progressive integrator and is often less noisy there. This code may still change a lot, so unless you're testing it may be best to stick to the Compatible falloff function. Skin test render and file that takes advantage of the gaussian falloff: http://www.pasteall.org/pic/show.php?id=57661 http://www.pasteall.org/pic/show.php?id=57662 http://www.pasteall.org/blend/23501
2013-08-11Code cleanup / Cycles:Thomas Dinges
* Remove unused "PathThroughput" variable. * Don't compile unused voronoi code, we only use Distance Squared atm. * Various typo and comment fixes.
2013-08-10Code cleanup / Cycles:Thomas Dinges
* Remove code for the unused Wave texture variations. We have quite some unused code in the texture area, I guess it doesn't harm to clean a bit up here. We can always get the code back from SVN if we need something.
2013-08-01Cycles / HSV Separator and Combine node:Thomas Dinges
* Added nodes to separate and combine hsv colors. Part of my GSoC 2013 project, SVN merge of r57981.
2013-08-01Cycles / Vector Transform node:Thomas Dinges
* Add a note to convert a Vector, Point or Normal between World <=> Camera <=> Object coordinate space. Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Vector_Transform Part of my GSoC 2013 project, SVN merge of r57599, r57670, r57918, r57919, r58245 and r58775.
2013-08-01Cycles / Blackbody to RGB node:Thomas Dinges
* Added a node to convert a temperature in Kelvin to an RGB color. This can be used e.g. for lights, to easily find the right color temperature. = Some common temperatures = Candle light: 1500 Kelvin Sunset/Sunrise: 1850 Kelvin Studio lamps: 3200 Kelvin Horizon daylight: 5000 Kelvin Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Blackbody Thanks to Philipp Oeser (lichtwerk), who essentially contributed to this with a patch! :) This is part of my GSoC 2013 project. SVN merge of r57424, r57487, r57507, r57525, r58253 and r58774
2013-08-01Cycles / Ray Depth:Thomas Dinges
* Added a Ray Depth output to the Light Path node, which gives the user access to the current bounce. This can be used to limit the maximum ray bounce on a per shader basis. Another use case is to restrict light influence with this, to have a lamp only contribute to the direct lighting. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/More#Light_Path This is part of my GSoC 2013 project. SVN merge of r58091 and r58772 from soc-2013-dingto.
2013-07-04Cycles:Thomas Dinges
* Added 2 new nodes to combine and separate HSV colors. Screenshot: http://www.pasteall.org/pic/show.php?id=54828
2013-06-27Merged revision(s) 57768-57827 from trunk/blender into soc-2013-dingtoThomas Dinges
2013-06-27Code cleanup: cyclesBrecht Van Lommel
* Reshuffle SSE #ifdefs to try to avoid compilation errors enabling SSE on 32 bit. * Remove CUDA kernel launch size exception on Mac, is not needed. * Make OSL file compilation quiet like c/cpp files.
2013-06-27Cycles / Brick texture:Thomas Dinges
* Avoid some unneeded int castings, they were only needed in the original Texture Nodes implementation as custom1 and custom2 were shorts.
2013-06-23Merged revision(s) 57587-57670 from trunk/blender into soc-2013-dingtoThomas Dinges
2013-06-23Cycles / Vector Transform Node:Thomas Dinges
* Implementation of Vector Transform Node into Cycles. * OSL backend is done, SVM needs the matrices still.
2013-06-22style cleanupCampbell Barton
2013-06-21Fix #35812: cycles image texture node not doing proper alpha handling of PNGBrecht Van Lommel
images with open shading language enabled.
2013-06-16Merged revision(s) 57423-57498 from trunk/blender into soc-2013-dingtoThomas Dinges
2013-06-16Cycles / Blackbody node:Thomas Dinges
* First (brute force) implementation for SVM. This works and delivers the same result as OSL, but it's slow. * Code inside svm_blackbody.h inspired by a patch by Philipp Oeser (#35698), thanks. Ideas: * Use a lookup table to perform the calculations on render/ level. * Implement it as a RNA property only, and do the calculation like Sun/Sky precompute.
2013-06-13Fix #35729: cycles normal maps not showing properly in preview render.Brecht Van Lommel
2013-06-13Cycles / Blackbody node:Thomas Dinges
* First step towards a Blackbody to RGB converter. You can specify a color in Kelvin inside the node. * Only implemented for OSL atm, SVM will follow.
2013-06-11Cycles / Wavelength to RGB node:Thomas Dinges
* 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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