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2019-11-06Fix T69845: OSL wrong texture node output for fixed vector valueBrecht Van Lommel
2019-11-04Fix T71123: OptiX error in Cycles viewport when adding HDRIPatrick Mours
Cycles did not update the "is_enabled" flag on lights when they were synchronized again, which caused all lights disabled by "LightManager::disable_ineffective_light" to be disabled indefinitely. As a result the OptiX kernels were not reloaded with correct features when a change to a light was made. This fixes that by updating the "is_enabled" flag during synchronization. Differential Revision: https://developer.blender.org/D6141
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
2019-09-30Fix "denoise_animation" tests with OptiX in CyclesPatrick Mours
The OptiX device only loads the denoising kernels when the "use_denoising" feature is active. This was not set by the calling code however and therefore they were never loaded and attempting to launch them failed (see T69801). Reviewed By: brecht Differential Revision: https://developer.blender.org/D5946
2019-09-24Cleanup: clang-formatBrecht Van Lommel
2019-09-24Fix T68457: Cycles OpenCL Displacement ShadingJeroen Bakker
When doing simple scenes the displacement shading failed during final rendering when the displacement method is set to `Displacement + Bump`. When this option is enabled the shader uses the Vector math node. This node is part of the node group level 1. When doing simple shading only using nodes that are part of the node group level 0 the shading was rendered black. This only happened in final rendering as there the OpenCL programs are optimized to save registries. Viewport rendering rendered correctly Reviewed By: brecht Differential Revision: https://developer.blender.org/D5859
2019-09-17Cycles: Viewport Rendering Memory ImprovementJeroen Bakker
Small memory reduction change by only storing the pixels of the combined pass when it is being shown in the viewport. Previously the combined pass was always calculated and present in the output buffer. The combined pass will still be calculated. It is a limitation in Blender that Cycles always had a combined pass. This patch will remove the limitation from the code base of Cycles. Blender still has the limitation, but will always request the combined renderpass when doing final rendering. Reviewed By: brecht Differential Revision: https://developer.blender.org/D5784
2019-09-13Cleanup: clang-formatCampbell Barton
2019-09-13Cycles: add Optix device backendPatrick Mours
This uses hardware-accelerated raytracing on NVIDIA RTX graphics cards. It is still currently experimental. Most features are supported, but a few are still missing like baking, branched path tracing and using CPU memory. https://wiki.blender.org/wiki/Reference/Release_Notes/2.81/Cycles#NVIDIA_RTX For building with Optix support, the Optix SDK must be installed. See here for build instructions: https://wiki.blender.org/wiki/Building_Blender/CUDA Differential Revision: https://developer.blender.org/D5363
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
2019-09-11Cycles: Display RenderPass in ViewportJeroen Bakker
This change allows the user to select a renderpass in the 3d viewport. Added support for external renderers to extend the `View3DShading` struct. This way Blender doesn't need to know the features an external render engine wants to support. Note that the View3DShading is also available in the scene->display.shading; although this is supported, it does not make sense for render engines to put something here as it is really scene/workbench related. Currently cycles assumes that it always needs to calculate the combined pass; it ignores the `pass_flag` in KernelFilm. We could optimize this but that was not in scope of this change Reviewed By: brecht Differential Revision: https://developer.blender.org/D5689
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
2019-08-30Cleanup: spellingCampbell Barton
2019-08-27Cycles: Stitching of subdivided and displaced meshesMai Lavelle
This patch stitches the vertices along patch edges so that cracks can no longer form when applying subdivision or displacement a mesh. Subpatches are now formed in a way that ensures vertex indices along subpatch edges are equal for adjacent subpatches. A mapping of vertices along patch edges is built to preform stitching. Overall performance is roughly the same, some gains were made in splitting, but some was lost in stitching. This fixes: - T49049 (cracks between patches from material and uv seams) - T49048 (discontinuous normals with true displacement) Reviewers: sergey, brecht Differential Revision: https://developer.blender.org/D3692
2019-08-26Cycles: refactor of BVH building to prepare for OptixPatrick Mours
Ref D5363
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
2019-08-16Cleanup: spellingCampbell Barton
2019-08-14Cleanup: don't unnecessarily use ustring in IES file parsingBrecht Van Lommel
2019-08-14Fix cycles crash when voxel attributes changedPhilipp Oeser
This could happen e.g. when changing smoke type from flow to domain or connecting a volume shader with to a domain without an actual flow type around. Fixes T58569, T68359 Reviewers: brecht Maniphest Tasks: T58569, T68359 Differential Revision: https://developer.blender.org/D5478
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
2019-08-11Cleanup: spellingCampbell Barton
2019-08-04Cleanup: Mark large arrays of of constant data as const.Lazydodo
For background information see D5345 Reviewers: brecht, sergey Differential Revision: https://developer.blender.org/D5345
2019-08-02Build: disable RTTI for the entire Cycles module, not only the kernelBrecht Van Lommel
The partial disabling was causing issues with Clang and ASAN, and it seems we don't need to restrict it to the kernel anymore now that we are no longer using boost directly.
2019-08-01Cleanup: misc spelling fixesCampbell Barton
T68035 by @luzpaz
2019-07-31Merge per-shader SVM nodes in the main update thread to avoid locking and ↵Lukas Stockner
resizing overhead In a test file containing 1300 copies of the same shader, this reduces shader update time from 3.1 sec to 0.05 sec. Thanks to @swerner for noticing this issue. Reviewers: brecht, sergey, swerner Subscribers: swerner Differential Revision: https://developer.blender.org/D5376
2019-07-31Fix: Cycles reporting incorrect number of samples in viewport renderJeroen Bakker
During viewport rendering where the viewport samples are set to 0 the UI showed 16777216 as number of samples. We should not show the number of samples when the number of viewport samples are set to 0. Differential Revision: https://developer.blender.org/D5301
2019-07-07Cleanup: spellingCampbell Barton
2019-07-04Fix T66412: crash with displacement and AO node in viewport rendersBrecht Van Lommel
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
2019-06-21Fix small memory leak in Cycles principled BSDFBrecht Van Lommel
2019-06-21Fix (harmless) Cycles ASAN warningsBrecht Van Lommel
2019-06-21Fix T65957: Cycles crash with OSL and UV mapsBrecht Van Lommel
2019-06-12Cleanup: spelling in commentsCampbell Barton
2019-06-01Cycles Denoising: Get rid of halos around bright edgesLukas Stockner
Previously, bright edges (e.g. caused by rim lighting) would sometimes get halos around them after denoising. This change introduces a log(1+x) highlight compression step that is performed before denoising and reversed afterwards. That way, the denoising algorithm itself operates in the compressed space and therefore bright edges cause less numerical issues.
2019-05-26Fix Cycles packed images not handling channel packed alpha correctlyBrecht Van Lommel
2019-05-25cycles_render: Fix unused variable build warning with MSVCRay Molenkamp
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.
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