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path: root/intern/cycles/render/nodes.cpp
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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
2020-04-09Shading: add Roughness input to Noise and Wave texture nodesBartosz Moniewski
Currently in fractal_noise functions, each subsequent octave doubles the frequency and reduces the amplitude by half. This patch introduces Roughness input to Noise and Wave nodes. This multiplier determines how quickly the amplitudes of the subsequent octaves decrease. Value of 0.5 will be the default, generating identical noise we had before. Values above 0.5 will increase influence of each octave resulting in more "rough" noise, most interesting pattern changes happen there. Values below 0.5 will result in more "smooth" noise. Differential Revision: https://developer.blender.org/D7065
2020-03-19Cleanup: `make format` after SortedIncludes changeDalai Felinto
2020-03-11Cleanup: refactor image loading to use abstract ImageLoader base classBrecht Van Lommel
Rather than passing around void pointers, various Blender image sources now subclass this. OIIO is also just another type of image loader. Also fixes T67718: Cycles viewport render crash editing point density settings
2020-03-11Cleanup: add ImageHandle to centralize image ownership logicBrecht Van Lommel
2020-03-11Cycles: add internal default volume shader, to be used for new volume objectBrecht Van Lommel
This is mostly straightforward, but required some refactoring to ensure that the default volume material does not always turn on the volume feature for GPU rendering.
2020-03-06Cleanup: tweak Cycles #includes in preparation for clang-format sortingBrecht Van Lommel
2020-03-02Shading: Add invert option to Vector Rotate NodeCharlie Jolly
Checkbox to invert rotation angle, suggested by @simonthommes Differential Revision: https://developer.blender.org/D6932
2020-02-26Cleanup: add ImageKey to avoid longer argument lists and duplicated codeBrecht Van Lommel
2020-02-24Fix T74169: Vector Rotate Node - Euler modes not working as intendedCharlie Jolly
Remove additional Euler modes for the time being, not working as intended, will add back if there is a need.
2020-02-19Fix T73938: Cycles Vertex Color wrong if no layer is specifiedPhilipp Oeser
The node would render black in this case (but should use the 'active_render' layer choosen in the object data properties -- this is now in line to how this is handled for e.g. UVs) This introduces ATTR_STD_VERTEX_COLOR and uses this thoughout, if no particular layer is specified in the node. Maniphest Tasks: T73938 Differential Revision: https://developer.blender.org/D6887
2020-02-17Cycles: Vector Rotate Node using Axis and Angle methodCharlie Jolly
This node provides the ability to rotate a vector around a `center` point using either `Axis Angle` , `Single Axis` or `Euler` methods. Reviewed By: #cycles, brecht Differential Revision: https://developer.blender.org/D3789
2020-02-17Shading: add direction modes and phase offset to wave texture nodeBartosz Moniewski
* Direction mode X, Y and Z to align with axes rather than diagonal or spherical as previously. X is the new default, existing files will use diagonal or spherical for compatibility. * Phase offset to offset the wave along its direction, for purposes like animation and distortion. https://developer.blender.org/D6382
2020-02-15Shading: Extend Vector Math Node with Sin, Cos, Tan and Wrap functionsCharlie Jolly
This adds some extra functions recently added to the float Maths Node. Not all functions have been ported over in this patch. Also: + Tidy up menu + Change node color to match other vector nodes, this helps distinguish vector and float nodes in the tree + Move shared OSL functions to new header node_math.h Reviewed By: brecht Differential Revision: https://developer.blender.org/D6713
2020-02-07Cleanup: split Cycles Hair and Mesh classes, with Geometry base classBrecht Van Lommel
2020-02-04Merge branch 'blender-v2.82-release'Pablo Dobarro
2020-02-04Fix wrong default value for Lacunarity in Musgrave textureBartosz Moniewski
Lacunarity parameter determines scaling of subsequent octaves in fractal noises. For example, Noise node have this scaling hardcoded to 2.0. Each octave have twice bigger scale than previous one, resulting in finer details. By design fractal noises that generate octaves with same seed should not have Lacunarity set to 1.0, since then it just stacks up identical noises. Differential Revision: https://developer.blender.org/D6742
2020-01-27Shading: Add color output to White Noise nodeCharlie Jolly
Hash input values to a color. Differential Revision: https://developer.blender.org/D6672
2019-12-26Cycles: Use OIIO UDIM tag instead of %04dLukas Stockner
2019-12-26Cycles: Support UDIMs with OSL shadingLukas Stockner
2019-12-16Fix T72474: UDIM breaks box mapping in CyclesLukas Stockner
The ImageTextureNode incorrectly used the tile slot encoding for box- mapped textures as well. Since box-mapping always generates UVs that lie in the 1001 tile, there's no need to support tiles here.
2019-12-16Cycles: Fix one-tile UDIM renderingLukas Stockner
The code checked for the presence of more than one tile before substituting the tile number into the filename, so if a one-tile UDIM was used (or all but one tile were culled), the substitution was skipped and as a result the file was not found. With this change, the code explicitly tracks whether substitution is required, avoiding this problem. This also fixes another problem: The Environment texture never does substitution since it doesn't support UDIMs, but before the syncing code still inserted the placeholder into the filename if the user selected a tiled background image.
2019-12-12Add support for tiled images and the UDIM naming schemeLukas Stockner
This patch contains the work that I did during my week at the Code Quest - adding support for tiled images to Blender. With this patch, images now contain a list of tiles. By default, this just contains one tile, but if the source type is set to Tiled, the user can add additional tiles. When acquiring an ImBuf, the tile to be loaded is specified in the ImageUser. Therefore, code that is not yet aware of tiles will just access the default tile as usual. The filenames of the additional tiles are derived from the original filename according to the UDIM naming scheme - the filename contains an index that is calculated as (1001 + 10*<y coordinate of the tile> + <x coordinate of the tile>), where the x coordinate never goes above 9. Internally, the various tiles are stored in a cache just like sequences. When acquired for the first time, the code will try to load the corresponding file from disk. Alternatively, a new operator can be used to initialize the tile similar to the New Image operator. The following features are supported so far: - Automatic detection and loading of all tiles when opening the first tile (1001) - Saving all tiles - Adding and removing tiles - Filling tiles with generated images - Drawing all tiles in the Image Editor - Viewing a tiled grid even if no image is selected - Rendering tiled images in Eevee - Rendering tiled images in Cycles (in SVM mode) - Automatically skipping loading of unused tiles in Cycles - 2D texture painting (also across tiles) - 3D texture painting (also across tiles, only limitation: individual faces can not cross tile borders) - Assigning custom labels to individual tiles (drawn in the Image Editor instead of the ID) - Different resolutions between tiles There still are some missing features that will be added later (see T72390): - Workbench engine support - Packing/Unpacking support - Baking support - Cycles OSL support - many other Blender features that rely on images Thanks to Brecht for the review and to all who tested the intermediate versions! Differential Revision: https://developer.blender.org/D3509
2019-12-10Cycles: support for custom shader AOVsLukas Stockner
Custom render passes are added in the Shader AOVs panel in the view layer settings, with a name and data type. In shader nodes, an AOV Output node is then used to output either a value or color to the pass. Arbitrary names can be used for these passes, as long as they don't conflict with built-in passes that are enabled. The AOV Output node can be used in both material and world shader nodes. Implemented by Lukas, with tweaks by Brecht. Differential Revision: https://developer.blender.org/D4837
2019-12-07Shader Nodes: Add Interpolation modes to Map Range nodeCharlie Jolly
Modes: Linear interpolation (default), stepped linear, smoothstep and smootherstep. This also includes an additional option for the **Clamp node** to switch between **Min Max** (default) and **Range** mode. This was needed to allow clamping when **To Max** is less than **To Min**. Reviewed By: JacquesLucke, brecht Differential Revision: https://developer.blender.org/D5827
2019-12-07Maths Node: Additional functionsCharlie Jolly
When creating shaders and using maths functions it is expected that Blender should match functions in other DCC applications, game engines and shading languages such as GLSL and OSL. This patch adds missing functions to the Blender maths node. Ideally, it would be nice to have these functions available to vectors too but that is not part of this patch. This patch adds the following functions trunc, snap, wrap, compare, pingpong, sign, radians, degrees, cosh, sinh, tanh, exp, smoothmin and inversesqrt. Sign function is based on GLSL and OSL functions and returns zero when x == 0. Differential Revision: https://developer.blender.org/D5957
2019-11-27Cycles: Add Random Per Island attribute.OmarSquircleArt
The Random Per Island attribute is a random float associated with each connected component (island) of the mesh. It is particularly useful when artists want to add variations to meshes composed of separate units. Like tree leaves created using particle systems, wood planks created using array modifiers, or abstract splines created using AN. Reviewed By: Sergey Sharybin, Jacques Lucke Differential Revision: https://developer.blender.org/D6154
2019-10-04Fix: Clamping in Map Range node works incorrectly.OmarSquircleArt
The clamp option in the Map Range node doesn't work correctly when the inputs are linked. The code didn't put that into considration. Reviewers: brecht Differential Revision: https://developer.blender.org/D5987
2019-09-12Shading: Add Vertex Color node.OmarSquircleArt
This patch adds a new Vertex Color node. The node also returns the alpha of the vertex color layer as an output. Reviewers: brecht Differential Revision: https://developer.blender.org/D5767
2019-09-12Shading: Add More Features To The Voronoi Node.OmarSquircleArt
This patch allows the Voronoi node to operate in 1D, 2D, and 4D space. It also adds a Randomness input to control the randomness of the texture. Additionally, it adds three new modes of operation: - Smooth F1: A smooth version of F1 Voronoi with no discontinuities. - Distance To Edge: Returns the distance to the edges of the cells. - N-Sphere Radius: Returns the radius of the n-sphere inscribed in the cells. In other words, it is half the distance between the closest feature point and the feature point closest to it. And it removes the following three modes of operation: - F3. - F4. - Cracks. The Distance metric is now called Euclidean, and it computes the actual euclidean distance as opposed to the old method of computing the squared euclidean distance. This breaks backward compatibility in many ways, including the base case. Reviewers: brecht, JacquesLucke Differential Revision: https://developer.blender.org/D5743
2019-09-09Shading: Extend Musgrave node to other dimensions.OmarSquircleArt
This patch extends Musgrave noise to operate in 1D, 2D, 3D, and 4D space. The Color output was also removed because it was identical to the Fac output. Reviewed By: brecht Differential Revision: https://developer.blender.org/D5566
2019-09-05Shading: Rewrite Mapping node with dynamic inputs.OmarSquircleArt
This patch rewrites the Mapping node to support dynamic inputs. The Max and Min options have been removed. They can be added as Min and Max Vector Math nodes manually. Texture nodes still use the old matrix-based mapping. A new SVM node `NODE_TEXTURE_MAPPING` has been added to preserve this functionality. Similarly, in GLSL, a `mapping_mat4` function has been added. Reviewers: brecht, JacquesLucke
2019-09-04Shading: Extend Noise node to other dimenstions.OmarSquircleArt
This patch extends perlin noise to operate in 1D, 2D, 3D, and 4D space. The noise code has also been refactored to be more readable. The Color output and distortion patterns changed, so this patch breaks backward compatibility. This is due to the fact that we now use random offsets as noise seeds, as opposed to swizzling and constants offsets. Reviewers: brecht, JacquesLucke Differential Revision: https://developer.blender.org/D5560
2019-08-26Cleanup: fix compiler warningsBrecht Van Lommel
2019-08-22Shading: Add object color to Object Info node.OmarSquircleArt
The object color property is added as an additional output in the Object Info node. Reviewers: brecht Differential Revision: https://developer.blender.org/D5554
2019-08-21Shading: Add Volume Info node.OmarSquircleArt
The Volume Info node provides the Color, Desnity, Flame, and Temperature of smoke domains. Reviewers: brecht Differential Revision: https://developer.blender.org/D5551
2019-08-21Shading: Add White Noise node.OmarSquircleArt
The White Noise node hashes the input and returns a random number in the range [0, 1]. The input can be a 1D, 2D, 3D, or a 4D vector. Reviewers: brecht, JacquesLucke Differential Revision: https://developer.blender.org/D5550
2019-08-21Shading: Add more operators to Vector Math node.OmarSquircleArt
Add Multiply, Divide, Project, Reflect, Distance, Length, Scale, Snap, Floor, Ceil, Modulo, Fraction, Absolute, Minimum, and Maximum operators to the Vector Math node. The Value output has been removed from operators whose output is a vector, and the other way around. All of those removals has been handled properly in versioning code. The patch doesn't include tests for the new operators. Tests will be added in a later patch. Reviewers: brecht, JacquesLucke Differential Revision: https://developer.blender.org/D5523
2019-08-20Fix use of uninitialized variable in Cycles math nodeBrecht Van Lommel
2019-08-18Shading: Refactor Math node and use dynamic inputs.OmarSquircleArt
- Implement dynamic inputs. The second input is now unavailable in single operand math operators. - Reimplemenet the clamp option using graph expansion for Cycles. - Clean up code and unify naming between Blender and Cycles. - Remove unused code. Reviewers: brecht Differential Revision: https://developer.blender.org/D5481
2019-08-14Cleanup: don't unnecessarily use ustring in IES file parsingBrecht Van Lommel
2019-08-14Shading: Add a clamp option to the Map Range node.OmarSquircleArt
If the option is enabled, the output is clamped to the target range. The target range is [To Min, To Max]. The option is enabled by default. The clamp option is implemented in EEVEE by linking to the `clamp_value` GLSL function. And it is implemented in Cycles using a graph expand function. Reviewers: brecht, JacquesLucke Differential Revision: https://developer.blender.org/D5477
2019-08-13Shading: Add Clamp node to Cycles and EEVEE.OmarSquircleArt
This patch adds a new node that clamps a value between a maximum and a minimum values. Reviewers: brecht Differential Revision: https://developer.blender.org/D5476
2019-08-13Shading: Add Map Range node to Cycles and EEVEE.OmarSquircleArt
This patch adds a new Map Range node that linearly remaps an input value from a range to another. This node is similar to the compositor's Map Range node. Reviewers: brecht, JacquesLucke Differential Revision: https://developer.blender.org/D5471
2019-06-28Cycles: add back control to render first N bounces with path terminationBrecht Van Lommel
It's found in the Sampling > Advanced panel and 0 by default. This helps to reduce noise in some scenes, while making others slower.
2019-06-28Fix Cycles OSL assert when running testsBrecht Van Lommel
2019-05-19Images: change alpha settings to support channel packingBrecht Van Lommel
This also replaces the Use Alpha setting. We now have these alpha modes: * Straight: store RGB and alpha channels separately with alpha acting as a mask, also known as unassociated alpha. * Premultiplied: transparent RGB pixels are multiplied by the alpha channel. The natural format for renders. * Channel Packed: different images are packed in the RGB and alpha channels, and they should not influence each other. Channel packing is commonly used by game engines to save memory. * None: ignore alpha channel from the file and make image fully opaque. Cycles OSL does not correctly support Channel Packed and None yet, we are missing fine control over the OpenImageIO texture cache to do that. Fixes T53672
2019-05-19Images: don't (un)premultipy non-color dataBrecht Van Lommel
The previous behavior here was wrong for some specific combinations of settings, non-color RGB channels should never be affected by the alpha channel.
2019-05-19Cleanup: refactor image texture node code for coming changesBrecht Van Lommel
2019-05-15Fix T64618: Cycles crash with point density texture on WindowsBrecht Van Lommel
A better solution would be to not use the callback mechanism anymore for cases like this where the dependency graph will free volume data, but that would be a bigger refactor.
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