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path: root/intern/cycles/kernel/osl/osl_closures.cpp
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2021-10-26Cycles: remove prefix from source code file namesBrecht Van Lommel
Remove prefix of filenames that is the same as the folder name. This used to help when #includes were using individual files, but now they are always relative to the cycles root directory and so the prefixes are redundant. For patches and branches, git merge and rebase should be able to detect the renames and move over code to the right file.
2021-10-26Cycles: changes to source code folders structureBrecht Van Lommel
* Split render/ into scene/ and session/. The scene/ folder now contains the scene and its nodes. The session/ folder contains the render session and associated data structures like drivers and render buffers. * Move top level kernel headers into new folders kernel/camera/, kernel/film/, kernel/light/, kernel/sample/, kernel/util/ * Move integrator related kernel headers into kernel/integrator/ * Move OSL shaders from kernel/shaders/ to kernel/osl/shaders/ For patches and branches, git merge and rebase should be able to detect the renames and move over code to the right file.
2021-10-19Cleanup: More readable Cycles OSL BSDF definitionSergey Sharybin
A Clang-Format configuration to make the closure definition block to be properly recognized as such. Also small wrapper macro to avoid comma in the actual definition code which was causing unwanted indentation of parameters definition. Requires Clang-Format 7 or newer. The version we ship in the libs is 12, so for recommended development setup it should all be good. Differential Revision: https://developer.blender.org/D12920
2021-10-18Cleanup: consistently use uint32_t for path flagBrecht Van Lommel
2021-10-18Cycles: replace integrator state argument macrosBrecht Van Lommel
* Rename struct KernelGlobals to struct KernelGlobalsCPU * Add KernelGlobals, IntegratorState and ConstIntegratorState typedefs that every device can define in its own way. * Remove INTEGRATOR_STATE_ARGS and INTEGRATOR_STATE_PASS macros and replace with these new typedefs. * Add explicit state argument to INTEGRATOR_STATE and similar macros In preparation for decoupling main and shadow paths. Differential Revision: https://developer.blender.org/D12888
2021-09-21Cycles: merge of cycles-x branch, a major update to the rendererBrecht Van Lommel
This includes much improved GPU rendering performance, viewport interactivity, new shadow catcher, revamped sampling settings, subsurface scattering anisotropy, new GPU volume sampling, improved PMJ sampling pattern, and more. Some features have also been removed or changed, breaking backwards compatibility. Including the removal of the OpenCL backend, for which alternatives are under development. Release notes and code docs: https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Cycles https://wiki.blender.org/wiki/Source/Render/Cycles Credits: * Sergey Sharybin * Brecht Van Lommel * Patrick Mours (OptiX backend) * Christophe Hery (subsurface scattering anisotropy) * William Leeson (PMJ sampling pattern) * Alaska (various fixes and tweaks) * Thomas Dinges (various fixes) For the full commit history, see the cycles-x branch. This squashes together all the changes since intermediate changes would often fail building or tests. Ref T87839, T87837, T87836 Fixes T90734, T89353, T80267, T80267, T77185, T69800
2020-06-17Fix T77915: Cycles OSL microfacet closure not working in custom shadersBrecht Van Lommel
The code to implement the newer closure in terms of the old one got lost in the removal of our stdosl.h copy. Now implement it as a builtin closure.
2020-05-15Cycles: Refactor microfacet BSDFs to remove separate anisotropy codeLukas Stockner
Since the sampling and evaluation functions handle both cases anyways, there's not really a point for keeping the distinction in the kernel, so we might as well cut down the number of CLOSURE_BSDF_MICROFACETs a bit. Differential Revision: https://developer.blender.org/D7736
2020-03-06Cleanup: tweak Cycles #includes in preparation for clang-format sortingBrecht Van Lommel
2020-01-21Partial Fix T73043: Denoising Albedo not working well for SheenLukas Stockner
Similar to the Microfacet Closures, the Principled BSDF Sheen closure is added at a high weight but typically results in fairly low values. Therefore, the default weight is a bad indicator of importance. The fix here is the same as it was back then for Microfacets: Compute an average weight using the normal as the half-vector and use it to scale down the sample weight and the albedo channel. In addition to drastically improving denoising of materials with sheen when using the new Denoising node, this also can reduce noise on such materials considerably.
2019-05-14Fix T64515, T60434: crash in OSL and preview render after recent changesBrecht Van Lommel
The refactoring of texture handles did not take into account that render services are shared between multiple render session. Now the texture to handle map is also shared between render sessions.
2019-05-03Cleanup: refactor passing of OSL kernel globals for upcoming changesBrecht Van Lommel
2019-05-01Cleanup: comments (long lines) in cyclesCampbell Barton
2019-04-17ClangFormat: apply to source, most of internCampbell Barton
Apply clang format as proposed in T53211. For details on usage and instructions for migrating branches without conflicts, see: https://wiki.blender.org/wiki/Tools/ClangFormat
2018-08-24Cycles: Cleanup, styleSergey Sharybin
I wouldn't mind changing style to have space after keyword, but there was no official code style change proposed.
2018-07-18Cycles: add Principled Hair BSDF.L. E. Segovia
This is a physically-based, easy-to-use shader for rendering hair and fur, with controls for melanin, roughness and randomization. Based on the paper "A Practical and Controllable Hair and Fur Model for Production Path Tracing". Implemented by Leonardo E. Segovia and Lukas Stockner, part of Google Summer of Code 2018.
2018-07-06Cleanup: strip trailing space for cyclesCampbell Barton
2018-06-26Revert "Turned off clang warnings in third party includes."Stefan Werner
This reverts commit d53093953f8f3b58600cb19020ecbe0b5f254b52.
2018-06-26Turned off clang warnings in third party includes.Stefan Werner
The latest clang compiler (at least the one in Xcode 9.4.1) warns about the register keyword and macro expansions using defined(). Since these warnings come from third party code, we can't address them directly in Blender. Silencing them via #pramgas will at least keep the warnings during a build down to the ones that are relevant to Blender code.
2018-06-15Cycles: change Ambient Occlusion shader to output colors.Lukas Stockner
This means the shader can now be used for procedural texturing. New settings on the node are Samples, Inside, Local Only and Distance. Original patch by Lukas with further changes by Brecht. Differential Revision: https://developer.blender.org/D3479
2018-02-22Cycles: better path termination for transparency.Brecht Van Lommel
We now continue transparent paths after diffuse/glossy/transmission/volume bounces are exceeded. This avoids unexpected boundaries in volumes with transparent boundaries. It is also required for MIS to work correctly with transparent surfaces, as we also continue through these in shadow rays. The main visible changes is that volumes will now be lit by the background even at volume bounces 0, same as surfaces. Fixes T53914 and T54103.
2018-02-08Cycles: unify OSL BSSRDF closure into a single bssrdf() closure with method.Brecht Van Lommel
This is similar to the upstream unified microfacet() closure, and makes it easier to extend in the future.
2018-02-02Fix T53978: Bad memory access after recent fix to BSDF mixingMai Lavelle
Added proper checks after BSDF allocation and cleaned up existing inline checks. Was introduced in 7261d675e6aeb1b0dff
2018-01-30Fix Cycles incorrect principled BSDF mixing with some parameter variatons.Brecht Van Lommel
Spotted by Ha Hyung-jin, thanks!
2018-01-19Cycles: Remove unneeded include statementsSergey Sharybin
Also try to move them from headers to implementation files as much as possible.
2017-11-21Fix build with OSL 1.9.x, automatically aligns to 16 bytes now.Brecht Van Lommel
2017-11-09Fix T53270: crash with multiscatter GGX after recent refactoring.Brecht Van Lommel
In fact this was an existing issue when exceeding the number of available closure, but it's more common now that we set the number to 0 for shadows and emission
2017-11-05Code refactor: sum transparent and absorption weights outside closures.Brecht Van Lommel
2017-06-28Fix T51909: Cycles: Uninitialized closure normals for the Hair BSDFLukas Stockner
As the title says, the normal wasn't set for the Hair BSDF because it wasn't needed before. However, the denoiser uses it to store the feature passes, so it needs to be set now.
2017-06-22Cycles: Fix excessive sampling weight of glossy Principled BSDF componentsLukas Stockner
If there was any specularity in the Principled BSDF, it would get a sampling weight of one regardless of its actual impact. This commit makes Cycles estimate the contribution of the component and adjust the weighting accordingly, which greatly improves the noise characteristics of the Principled BSDF in many cases. Note that this commit might slightly change the brightness of areas when using MultiGGX and high roughnesses, but the new brightness is more accurate and closer to the result of Branched Path Tracing. See T51836 for details. Differential Revision: https://developer.blender.org/D2677
2017-06-21Fix T51849: change Cycles clearcoat gloss to roughness.Brecht Van Lommel
This is compatible with UE4 and more consistent with specular and transmission roughness, even if it deviates from the original Disney BRDF.
2017-04-18Squashed commit of the following:Pascal Schoen
commit 90778901c9ea1e16d5907981e91bceba25ff207d Merge: 76eebd9 3bf0026 Author: Schoen <schoepas@deher1m1598.emea.adsint.biz> Date: Mon Apr 3 07:52:05 2017 +0200 Merge branch 'master' into cycles_disney_brdf commit 76eebd9379a5dad519ff01cf215fbe3db6de931e Author: Schoen <schoepas@deher1m1598.emea.adsint.biz> Date: Thu Mar 30 15:34:20 2017 +0200 Updated copyright for the new files. commit 013f4a152a3898946ba5c616141c6e44d928ccfd Author: Schoen <schoepas@deher1m1598.emea.adsint.biz> Date: Thu Mar 30 15:32:55 2017 +0200 Switched from multiplication of base and subsurface color to blending between them using the subsurface parameter. commit 482ec5d1f20ceabc9cbda4838d4ae37d1d673458 Author: Schoen <schoepas@deher1m1598.emea.adsint.biz> Date: Mon Mar 13 15:47:12 2017 +0100 Fixed a bug that caused an additional white diffuse closure call when using path tracing. commit 26e906d162a6a8d67f2ebc8880993fcbab69559e Merge: 0593b8c 223aff9 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Feb 6 11:32:31 2017 +0100 Merge branch 'master' into cycles_disney_brdf commit 0593b8c51bf7db0ed5ca92ed6f68d0d984dad0dd Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Feb 6 11:30:36 2017 +0100 Fixed the broken GLSL shader and implemented the Disney BRDF in the real-time view port. commit 8c7e11423be640dc44b1807912058480710e51f4 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Feb 3 14:24:05 2017 +0100 Fix to comply strict compiler flags and some code cleanup commit 17724e9d2dbffb1aaa61401224ecbf2349c1dac3 Merge: 379ba34 520afa2 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Jan 24 09:59:58 2017 +0100 Merge branch 'master' into cycles_disney_brdf commit 379ba346b0acd1ea779365b940fcd01f5ba1165f Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Jan 24 09:28:56 2017 +0100 Renamed the Disney BSDF to Principled BSDF. commit f80dcb4f34f1dc41841ced5965787fc26ace22a2 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Dec 2 13:55:12 2016 +0100 Removed reflection call when roughness is low because of artifacts. commit 732db8a57f6d4e5d6f44bbad176c15fd55377f0a Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed Nov 16 09:22:25 2016 +0100 Indication if to use fresnel is now handled via the type of the BSDF. commit 0103659f5e705b314cde98b0e4a01c14c55acd5e Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Nov 11 13:04:11 2016 +0100 Fixed an error in the clearcoat where it appeared too bright for default light sources (like directional lights) commit 0aa68f533529c9fd197a3ab0427f9e41a15456b9 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Nov 7 12:04:38 2016 +0100 Resolved inconsistencies in using tabs and spaces commit f5897a9494e352de274b99e7bee971336c0dc386 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Nov 7 08:13:41 2016 +0100 Improved the clearcoat part by using GTR1 instead of GTR2 commit 3dfc240e61b3d4d0e7c476989792e4ada869ce91 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Oct 31 11:31:36 2016 +0100 Use reflection BSDF for glossy reflections when roughness is 0.0 to reduce computational expense and some code cleanup Code cleanup includes: - Code style cleanup and removed unused code - Consolidated code in the bsdf_microfacet_multi_impl.h to reduce some computational expense commit a2dd0c5fafdabe1573299170fb3be98a3e46d17a Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed Oct 26 08:51:10 2016 +0200 Fixed glossy reflections and refractions for low roughness values and cleaned up the code. For low roughness values, the reflections had some strange behavior. commit 981737591231a1a5a1c85950950580b65d029505 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Oct 25 12:37:40 2016 +0200 Removed default values in setup functions and added extra functions for GGX with fresnel. commit bbc5d9d4527346a74155cf17be21fb02ee3e0779 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Oct 25 11:09:36 2016 +0200 Switched from uniform to cosine hemisphere sampling for the diffuse and the sheen part. commit d52d8f2813d64363713f11160a6c725d4cafbcfa Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Oct 24 16:17:13 2016 +0200 Removed the color parameters from the diffuse and sheen shader and use them as closure weights instead. commit 8f3d92738532ad867a0a3543c00393626ab8f6ec Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Oct 24 09:57:06 2016 +0200 Fixed the issue with artifacts when using anisotropy without linking the tangent input to a tangent node. commit d93f680db9acaaade0354b34857a3ccaf348557f Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Oct 24 09:14:51 2016 +0200 Added subsurface radius parameter to control the per color channel effection radius of the subsurface scattering. commit c708c3e53b323773fc852bdc239bc51e157dcaef Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Oct 24 08:14:10 2016 +0200 Rearranged the inputs of the shader. commit dfbfff9c389074d3e5c1f49dd38a95e9b317eb1f Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Oct 21 09:27:05 2016 +0200 Put spaces in the parameter names of the shader node commit e5a748ced17c8f59e5e73309096adeea3ba95e04 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Oct 21 08:51:20 2016 +0200 Removed code that isn't in use anymore commit 75992bebc128c8b44cab4f0d8855603787f57260 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Oct 21 08:50:07 2016 +0200 Code style cleanup commit 4dfcf455f7769752044e051b399fb6a5dfcd0e22 Merge: 243a0e3 2cd6a89 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Thu Oct 20 10:41:50 2016 +0200 Merge branch 'master' into cycles_disney_brdf commit 243a0e3eb80ef82704d5ea2657384c3a4b9fb497 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Thu Oct 20 10:01:45 2016 +0200 Switching between OSL and SVM is more consistant now when using Disney BSDF. There were some minor differences in the OSL implementation, e.g. the refraction roughness was missing. commit 2a5ac509223c838285a00c4c12775567666e7154 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Sep 27 09:17:57 2016 +0200 Fixed a bug that caused transparency to be always white when using OSL and selecting GGX as distribution of the Disney BSDF commit e1fa8623915407cea942a07fd0a106b04e113c09 Merge: d0530a8 7f76f6f Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Sep 27 08:59:32 2016 +0200 Merge branch 'master' into cycles_disney_brdf commit d0530a8af0e076c0aca4c9a61b0a64cada45ac4d Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Sep 27 08:53:18 2016 +0200 Cleanup the Disney BSDF implementation and removing unneeded files. commit 3f4fc826bd9c1f47c694c0f6b2947daf5b524b1a Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Sep 27 08:36:07 2016 +0200 Unified the OSL implementation of the Disney clearcoat as a simple microfacet shader like it was previously done in SVM commit 4d3a0032ecea99031979f342bfd5f66ea5a8625a Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Sep 26 12:35:36 2016 +0200 Enhanced performance for Disney materials without subsurface scattering commit 3cd5eb56cf5c9006837f111c8866e4c6e1c2a6fd Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Sep 16 08:47:56 2016 +0200 Fixed a bug in the Disney BSDF that caused specular reflections to be too bright and diffuse is now reacting to the roughness again - A normalization for the fresnel was missing which caused the specular reflections to become too bright for the single-scatter GGX - The roughness value for the diffuse BSSRDF part has always been overwritten and thus always 0 - Also the performance for refractive materials with roughness=0.0 has been improved commit 7cb37d711938e5626651db21f20da50edd96abaf Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Thu Sep 8 12:24:43 2016 +0200 Added selection field to the Disney BSDF node for switching between "Multiscatter GGX" and "GGX" In the "GGX" mode there is an additional parameter for changing the refraction roughness for materials with smooth surfaces and rough interns (e.g. honey). With the "Multiscatter GGX" this effect can't be produced at the moment and so here will be no separation of the two roughness values. commit cdd29d06bb86672ed0779eefb8eee95796b8f939 Merge: 02c315a b40d1c1 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Sep 6 15:59:05 2016 +0200 Merge branch 'master' into cycles_disney_brdf commit 02c315aeb0f0d7bb429d4396912e03dbb8a77340 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Sep 6 15:16:09 2016 +0200 Implemented the OSL part of the Disney shader commit 5f880293aeeacf269032824248b46d613691a36c Merge: 630b80e b399a6d Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Sep 2 10:53:36 2016 +0200 Merge branch 'master' into cycles_disney_brdf commit 630b80e08b6acf83834bc95264af4ccdbbc5f82c Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Sep 2 10:52:13 2016 +0200 Fresnel in the microfacet multiscatter implementation improved commit 0d9f4d7acb2de65d1c98d425cea4bf364795c155 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Aug 26 11:11:05 2016 +0200 Fixed refraction roughness problem (refractions were always 100% rough) and set IOR of clearcoat to 1.5 commit 9eed34c7d980e1b998df457c4f76021162c80f78 Merge: ef29aae ae475e3 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Aug 16 15:22:32 2016 +0200 Merge branch 'master' into cycles_disney_brdf commit ef29aaee1af8074e0228c480d962700e97ea5b36 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Aug 16 15:17:12 2016 +0200 Implemented the fresnel in the multi-scatter GGX for the Disney BSDF - The specular/metallic part uses the multi-scatter GGX - The fresnel of the metallic part is controlled by the specular value - The color of the reflection part when using transparency can be controlled by the specularTint value commit 88567af085ac94119b98c95246b6d6f63161bc01 Merge: cc267e5 285e082 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed Aug 3 15:05:09 2016 +0200 Merge branch 'master' into cycles_disney_brdf commit cc267e52f20d036a66aeeff127ee1c856f7c651b Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed Aug 3 15:00:25 2016 +0200 Implemented the Disney clearcoat as a variation of the microfacet bsdf, removed the transparency roughness again and added an input for anisotropic rotations commit 81f6c06b1f53180bf32a5c11ac1fa64e2b6abf52 Merge: ece5a08 7065022 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed Aug 3 11:42:02 2016 +0200 Merge branch 'master' into cycles_disney_brdf commit ece5a08e0d6e51a83c223ea87346134216e5b34e Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Jul 26 16:29:21 2016 +0200 Base color now applied again to the refraction of transparent Disney materials commit e3aff6849e06853c56da7bd610210dcab70e6070 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Jul 26 16:05:19 2016 +0200 Added subsurface color parameter to the Disney shader commit b3ca6d8a2f4f866b323fc2df0a3beff577218c27 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Jul 26 12:30:25 2016 +0200 Improvement of the SSS in the Disney shader * Now the bump normal is correctly used for the SSS. * SSS in Disney uses the Disney diffuse shader commit d68729300ee557e90a8e7e4be6eb8ef98db80fe2 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Jul 26 12:23:13 2016 +0200 Better calculation of the Disney diffuse part Now the values for NdotL und NdotV are clamped to 0.0f for a better look when using normal maps commit cb6e500b12e7bce884d3db19ee138c975c215f2d Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Jul 25 16:26:42 2016 +0200 Now one can disable specular reflactions again by setting specular and metallic to 0 (cracked this in the previous commit) commit bfb9cb11b548103369de2a46ce18b4ddf661362c Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Jul 25 16:11:07 2016 +0200 fixed the Disney SSS and cleaned the initialization of the Disney shaders commit 642c0fdad12548c1a2ccbf595bae3a995d3022f7 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Jul 25 16:09:55 2016 +0200 fixed an error that was caused by the missing LABEL_REFLECT in the Disney diffuse shader commit c10b484dcad3412c34455736e9656cd38716bcb0 Author: Jens Verwiebe <info@jensverwiebe.de> Date: Fri Jul 22 01:15:21 2016 +0200 Rollback attempt to fix sss crashing, it prevented crash by disabling sss completely, thus useless commit 462bba3f97fcc41834e0e20cc806a7958e5106f5 Author: Jens Verwiebe <info@jensverwiebe.de> Date: Thu Jul 21 23:11:59 2016 +0200 Add an undef for sc_next for safety commit 32d348577d69be251aa04110c5f6156cd2645f48 Author: Jens Verwiebe <info@jensverwiebe.de> Date: Thu Jul 21 00:15:48 2016 +0200 Attempt to fix Disney SSS commit dbad91ca6d46f5a4a6f2ba7ed4c811ffa723942f Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed Jul 20 11:13:00 2016 +0200 Added a roughness parameter for refractions (for scattering of the rays within an object) With this, one can create a translucent material with a smooth surface and with a milky look. The final refraction roughness has to be calculated using the surface roughness and the refraction roughness because those two are correlated for refractions. If a ray hits a rough surface of a translucent material, it is scattered while entering the surface. Then it is scattered further within the object. The calculation I'm using is the following: RefrRoughnessFinal = 1.0 - (1.0 - Roughness) * (1.0 - RefrRoughness) commit 50ea5e3e34394a727e3cceb6203adb48834a9ab7 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue Jun 7 10:24:50 2016 +0200 Disney BSDF is now supporting CUDA commit 10974cc826a4bfa8fb3ef59177abf0b0dc441065 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 31 11:18:07 2016 +0200 Added parameters IOR and Transparency for refractions With this, the Disney BRDF/BSSRDF is extended by the BTDF part. commit 218202c0905a4ec93ee19850360d1a39966d2c25 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon May 30 15:08:18 2016 +0200 Added an additional normal for the clearcoat With this normal one can simulate a thin layer of clearcoat by applying a smoother normal map than the original to this input commit dd139ead7e04aa87a894ccf3732cfce711258ff1 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon May 30 12:40:56 2016 +0200 Switched to the improved subsurface scattering from Christensen and Burley commit 11160fa4e1c32230119d4506e7e9fd3da2ab37f2 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon May 30 10:16:30 2016 +0200 Added Disney Sheen shader as a preparation to get to a BSSRDF commit cee4fe0cc94515ee60d4afa4d4e10c41003f1579 Merge: 4f955d0 6b5bab6 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon May 30 09:08:09 2016 +0200 Merge branch 'cycles_disney_brdf' of git.blender.org:blender into cycles_disney_brdf Conflicts: intern/cycles/kernel/closure/bsdf_disney_clearcoat.h intern/cycles/kernel/closure/bsdf_disney_diffuse.h intern/cycles/kernel/closure/bsdf_disney_specular.h intern/cycles/kernel/closure/bsdf_util.h intern/cycles/kernel/osl/CMakeLists.txt intern/cycles/kernel/osl/bsdf_disney_clearcoat.cpp intern/cycles/kernel/osl/bsdf_disney_diffuse.cpp intern/cycles/kernel/osl/bsdf_disney_specular.cpp intern/cycles/kernel/osl/osl_closures.h intern/cycles/kernel/shaders/node_disney_bsdf.osl intern/cycles/render/nodes.cpp intern/cycles/render/nodes.h commit 4f955d052358206209454decf2c3539e6a21b42f Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 24 16:38:23 2016 +0200 SVM and OSL are both working for the simple version of the Disney BRDF commit 1f5c41874b01ad297eb8a6bad9985296c6c0a6e1 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 24 09:58:50 2016 +0200 Disney node can be used without SVM and started to cleanup the OSL implementation There is still some wrong behavior for SVM for the Schlick Fresnel part at the specular and clearcoat commit d4b814e9304ebb44cc7c291cd83f7b7cdebcd152 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 18 10:22:29 2016 +0200 Switched from a parameter struct for Disney parameters to ShaderClosure params commit b86a1f5ba5019c7818153cb70b49f5f7a0bc52a0 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 18 10:19:57 2016 +0200 Added additional variables for storing parameters in the ShaderClosure struct commit 585b88623695fa07dfca9c9909d6d9184c3519c8 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 17 12:03:17 2016 +0200 added output parameter to the DisneyBsdfNode That has been forgotten after removing the inheritance of BsdfNode commit f91a28639884cbda7804715b910d64abba0718ef Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 17 10:40:48 2016 +0200 removed BsdfNode class inheritance for DisneyBsdfNode That's due to a naming difference. The Disney BSDF uses the name 'Base Color' while the BsdfNode had a 'Color' input. That caused a text message to be printed while rendering. commit 30da91c9c51d8cbc6a7564c7aaa61c9efe2ab654 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 4 16:08:10 2016 +0200 disney implementation cleaned commit 30d41da0f0352fad29375a395ffcb9cb7891eeb1 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 4 13:23:07 2016 +0200 added the disney brdf as a shader node commit 1f099fce249cb35e949cc629f7cca2167fca881a Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 3 16:54:49 2016 +0200 added clearcoat implementation commit 00a1378b98e435e9cdbfbac86eb974c19b2a8151 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Apr 29 22:56:49 2016 +0200 disney diffuse und specular implemented commit 6baa7a7eb787638661cddad0c4e7f78bd3a8fa5c Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Apr 18 15:21:32 2016 +0200 disney diffuse is working correctly commit d8fa169bf3caf71c40a124101b33dee6c510188e Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Apr 18 08:41:53 2016 +0200 added vessel for disney diffuse shader commit 6b5bab6cecde153122625cf8dc10e4209ed1eb0f Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 18 10:22:29 2016 +0200 Switched from a parameter struct for Disney parameters to ShaderClosure params commit f6499c2676e074a36033627ffc7540107777630d Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 18 10:19:57 2016 +0200 Added additional variables for storing parameters in the ShaderClosure struct commit 7100640b65c2ff5447a18c01fc4e93594b4f486a Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 17 12:03:17 2016 +0200 added output parameter to the DisneyBsdfNode That has been forgotten after removing the inheritance of BsdfNode commit 419ee5441100a906b4b3fd8373cb768a71bfdfe6 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 17 10:40:48 2016 +0200 removed BsdfNode class inheritance for DisneyBsdfNode That's due to a naming difference. The Disney BSDF uses the name 'Base Color' while the BsdfNode had a 'Color' input. That caused a text message to be printed while rendering. commit 6006f91e8730f78df5874f808690d3908db103ab Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 4 16:08:10 2016 +0200 disney implementation cleaned commit 0ed08959141fc7c5f8c6e37c6552ecb9fcc5749c Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Wed May 4 13:23:07 2016 +0200 added the disney brdf as a shader node commit 0630b742d71c658915575a4a71a325094a0fc313 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Tue May 3 16:54:49 2016 +0200 added clearcoat implementation commit 9f3d39744b85619750c79c901f678b8c07fe0ee2 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Fri Apr 29 22:56:49 2016 +0200 disney diffuse und specular implemented commit 9b262063767d6b05a617891c967d887d21bfb177 Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Apr 18 15:21:32 2016 +0200 disney diffuse is working correctly commit 4711a3927dfcadaa1c36de0ba78fc304fac1dc8a Author: Pascal Schoen <pascal_schoen@gmx.net> Date: Mon Apr 18 08:41:53 2016 +0200 added vessel for disney diffuse shader Differential Revision: https://developer.blender.org/D2313
2017-03-29Cycles: Make all #include statements relative to cycles source directorySergey Sharybin
The idea is to make include statements more explicit and obvious where the file is coming from, additionally reducing chance of wrong header being picked up. For example, it was not obvious whether bvh.h was refferring to builder or traversal, whenter node.h is a generic graph node or a shader node and cases like that. Surely this might look obvious for the active developers, but after some time of not touching the code it becomes less obvious where file is coming from. This was briefly mentioned in T50824 and seems @brecht is fine with such explicitness, but need to agree with all active developers before committing this. Please note that this patch is lacking changes related on GPU/OpenCL support. This will be solved if/when we all agree this is a good idea to move forward. Reviewers: brecht, lukasstockner97, maiself, nirved, dingto, juicyfruit, swerner Reviewed By: lukasstockner97, maiself, nirved, dingto Subscribers: brecht Differential Revision: https://developer.blender.org/D2586
2017-03-08Cycles: Make it possible to access KernelGlobals from split data ↵Sergey Sharybin
initialization function
2017-03-08Cycles: CPU implementation of split kernelMai Lavelle
2016-07-31Cycles: refactor kernel closure storage to use structs per closure type.Brecht Van Lommel
Reviewed By: dingto, sergey Differential Revision: https://developer.blender.org/D2127
2016-06-23Cycles: Add multi-scattering, energy-conserving GGX as an option to the ↵Lukas Stockner
Glossy, Anisotropic and Glass BSDFs This commit adds a new distribution to the Glossy, Anisotropic and Glass BSDFs that implements the multiple-scattering microfacet model described in the paper "Multiple-Scattering Microfacet BSDFs with the Smith Model". Essentially, the improvement is that unlike classical GGX, which only models single scattering and assumes the contribution of multiple bounces to be zero, this new model performs a random walk on the microsurface until the ray leaves it again, which ensures perfect energy conservation. In practise, this means that the "darkening problem" - GGX materials becoming darker with increasing roughness - is solved in a physically correct and efficient way. The downside of this model is that it has no (known) analytic expression for evalation. However, it can be evaluated stochastically, and although the correct PDF isn't known either, the properties of MIS and the balance heuristic guarantee an unbiased result at the cost of slightly higher noise. Reviewers: dingto, #cycles, brecht Reviewed By: dingto, #cycles, brecht Subscribers: bliblubli, ace_dragon, gregzaal, brecht, harvester, dingto, marcog, swerner, jtheninja, Blendify, nutel Differential Revision: https://developer.blender.org/D2002
2016-02-04Cycles: Implement approximate reflectance profilesSergey Sharybin
Using this paper: http://graphics.pixar.com/library/ApproxBSSRDF/paper.pdf This model gives less blurry results than the Cubic and Gaussian we had implemented: - Cubic: https://developer.blender.org/F279670 - Burley: https://developer.blender.org/F279671 The model is called "Christensen-Burley" in the interface, which actually should be read as "Physically based" or "Realistic". Reviewers: juicyfruit, dingto, lukasstockner97, brecht Reviewed By: brecht, dingto Subscribers: robocyte Differential Revision: https://developer.blender.org/D1759
2015-02-18Cleanup for Cycles hair shader ifdefs.Thomas Dinges
sc->T and sc->data2 were behind __HAIR__ ifdef, now they are not anymore, so we can always assign the correct value.
2014-12-03Cycles: Use 16 bytes aligned closures in OSLSergey Sharybin
This solves bugs like T42210 which are caused by compiler being smart and using some SSE instructions to operate with closure classes, which was failing because those classes are not allocated by the regular allocator but allocated in memory pool in OSL. With newer versions of OSL it is now possible to force closure classes being aligned to a given boundary and this commit uses this new functionality. Unfortunately, it means we're no longer compatible with older versions of OSL, only latest git version from upstream and our branch at github are supported: https://github.com/Nazg-Gul/OpenShadingLanguage/tree/blender-fixes For OSX and Windows it's not an issue because libraries are already updated there, Linux users would need to run install_deps script.
2014-11-28Cycles: Code cleanup, remove dead codeSergey Sharybin
2014-10-03Cycles: Remove Westin closure.Thomas Dinges
Was hooked up last year for testing purposes, as we already had some code for it, but the closure itself is not really good nor really useful, so let's remove it.
2014-09-05Cycles: Split caustics option, to allow separate control for Reflection and ↵Thomas Dinges
Refraction caustics. This way artists can only disable/enable refraction or reflection caustics. See Cycles logs for an example: http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.72/Cycles Differential revision: https://developer.blender.org/D766
2014-07-25Cycles: Drop old OSL closure compatibility code.Thomas Dinges
This was added to keep custom OSL scripts with Toon and SSS closure calls working. 1 year after the change, we can drop the compatibility code now.
2014-07-06Fix part of T40964: Glass shader was giving wrong results with OSL.Thomas Dinges
2014-06-22Cycles: improved Beckmann sampling using precomputed dataBrecht Van Lommel
It turns out that the new Beckmann sampling function doesn't work well with Quasi Monte Carlo sampling, mainly near normal incidence where it can be worse than the previous sampler. In the new sampler the random number pattern gets split in two, warped and overlapped, which hurts the stratification, see the visualization in the differential revision. Now we use a precomputed table, which is much better behaved. GGX does not seem to benefit from using a precomputed table. Disadvantage is that this table adds 1MB of memory usage and 0.03s startup time to every render (on my quad core CPU). Differential Revision: https://developer.blender.org/D614
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: internal code support for anisotropic Beckmann and GGX reflectionBrecht Van Lommel
Based on: Understanding the Masking-Shadowing Function in Microfacet-Based BRDFs E. Heitz, Research Report 2014
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
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.
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