* Re-add support for UI Elements that use Render Targets
* Move LyShine pass request from Atom's MainPipeline.pass to project's
* Make all dynamic draw contexts in LyShine draw to pass directly without the need of draw list tags
* Remove local RPI changes that are no longer needed
* Prevent crash if LyShine gem is enabled but its custom pass hasn't been added to the main render pipeline
* Revert to default UI pass if the LyShine pass has not been added to project's main render pipeline
Signed-off-by: abrmich <abrmich@amazon.com>
* Expose shadow bias to component & feature processors. Shadow bias now works more consistently with various near / far shadow planes and caster positions. Bias now also affects esm shadows which helps eliminate acne in certain situations.
Signed-off-by: Ken Pruiksma <pruiksma@amazon.com>
* Adding jira comment to light configuration serialization version. Improved comment on final adjustment to bias before its sent to the shader.
Signed-off-by: Ken Pruiksma <pruiksma@amazon.com>
* Hooking up bias to behavior context.
Signed-off-by: Ken Pruiksma <pruiksma@amazon.com>
* Enable Shader Compilation support for Linux
* Add azslc package 3P definition for download
* Add AzslcGeader.azsli nad PlatformHeader.hlsli for Linux/Null and Linux/Vulkan (Copy of Android/Vulkan)
* Enable trait PAL_TRAIT_BUILD_ATOM_ASSET_SHADER_SUPPORTED for Linux
* Add platform builder file dependencies
* Updated AZ_TRAIT_ATOM_SHADERBUILDER_AZSLC to use new 3P linux version of azslc
* Add AtomShaderCapabilities.json, PlatformLimits.azasset for Linux (Copy from Android)
* Fix paths/values for Vulkan_Traits_Linux.h
* Enable trait PAL_TRAIT_BUILD_ATOM_ASSET_SHADER_SUPPORTED for Linux
* Enabled AZ_TRAIT_ATOM_VULKAN_LAYER_LUNARG_STD_VALIDATION_SUPPORT for Linux/Vulkan
* Added AzslcHeader.azsli, PlatformHeader.hlsli dependencies for Linux/Null and Linux/Vulkan in the platform builders for windows and mac for consistency
Signed-off-by: spham-amzn <spham@amazon.com>
* Use SampleLevel instead of Sample to sample shadow maps.
This allows shadow code to be used from computer shaders which don't allow Sample. Shadow maps don't have LODs anyways
* Fix some very silly typos
* Switching to Buffer<float> instead of Buffer<float3> in the skinning shader because metal doesn't support float3 buffers
Signed-off-by: amzn-tommy <waltont@amazon.com>
* Adding a comment to LinearSkinningPassSRG pointing out that positions, normals, and bitangents are using float buffers to work on Metal
Signed-off-by: amzn-tommy <waltont@amazon.com>
* ly_test_tools: Add filebeat_client module from o3de-mars.
Slightly modified with default parameters and exceptions in order to act as an individual component.
Signed-off-by: Cynthia Lin <cyntlin@amazon.com>
* scripts: Remove timestamp_aggregator.py to prepare for moving into ASV automated test repository.
Signed-off-by: Cynthia Lin <cyntlin@amazon.com>
* Refactoring the LTC quad and polygon lights to clip the light to the normal hemisphere before applying the LTC matrix. This prevents specular light leaking from behind the surface. Diffuse and specular contribution are now calculated at the same time to avoid clipping the polygon twice. Added a cheaper diffuse integration function that's accurate enough for diffuse. Also added a commented out alternate specular integration for platforms with poor acos() accuracy.
Signed-off-by: Ken Pruiksma <pruiksma@amazon.com>
* PR review feedback - typo and some saturate() protection
Signed-off-by: Ken Pruiksma <pruiksma@amazon.com>
* Making branch more explicit from review feedback.
Signed-off-by: Ken Pruiksma <pruiksma@amazon.com>
* Final update copyright headers to reference license files at the repo root
Signed-off-by: spham <spham@amazon.com>
* Fix copyright validator unit tests to support the stale O3DE header scenario
Signed-off-by: spham <spham@amazon.com>
Adding a factor for alpha affecting specular in the standard and enhanced pbr materials (#1474)
* Adding a factor for how much alpha should affect specular to standard and enhanced pbr. Currently blended and tinted transparency always assume that the geometry represents the surface, and the surface may just be transparent like glass. In this model, specular is unnaffected by alpha - perfectly clear glass still reflects light and obeys the Fresnel factor. However alpha may also represent the absence of a surface entirely for mateirals where cut-out alpha is a bad fit because of subpixel detail, like hair or cob webs. This change addresses that by allowing the alpha to also affect specular reflection if desired.
* Adding material for ASV test.
* Adding a factor for how much alpha should affect specular to standard and enhanced pbr. Currently blended and tinted transparency always assume that the geometry represents the surface, and the surface may just be transparent like glass. In this model, specular is unnaffected by alpha - perfectly clear glass still reflects light and obeys the Fresnel factor. However alpha may also represent the absence of a surface entirely for mateirals where cut-out alpha is a bad fit because of subpixel detail, like hair or cob webs. This change addresses that by allowing the alpha to also affect specular reflection if desired.
* Adding material for ASV test.
[ATOM-14344][ATOM-13908] Merging skinned and static mesh motion shaders using an optional vertext stream. This removes the log spam "Mesh does not have all the required input streams. Missing 'POSITIONT0'." and allows Material::GetShaderCollection() to be const only as it was intended. The MeshFeatureProcessor also no longer needs to decide which motion vector shader to use, and therefore no longer has m_skinnedMeshWithMotion in the descriptor to acquire a mesh.
* - Fix the second window related tabbing issue
- Merge calls to UseResoources acrooaa all the SRGs
- Move SamplerCache to the device to ensure only one cache to reduce duplication
- Fixes to compute threading numbers getting reset to 0,0,0
- Cleanup withing BufferPoolResolver
- Argument buffers are now queued to be cleaned up upon shutdown
Added a ShaderSystem supervariant to provide a system-wide supervariant name.
Changed ShaderAsset to append the system-wide supervariant name when searching for supervariants.
Added the NoMSAA supervariant to several shaders.
* Fixed organization of the AssetProcessor SourceAssetBrowser
Assets within the Engine Root were grouped under a '/' entry.
That has been fixed to use the relative path within the engine root for
those assets
Assets outside of the Engine Root, but on the same drive were using
absolute paths before. Now there are child entries that navigate up the
directory hierarchy to those asset locations
* Added ly_enable_gems call to Atom gems targets that are required
The DefaultLevel.prefab contains several Atom components, that require
the Atom RHI, RPI, Common_Feature, ShaderBuilder and AtomLyIntegration CommonFeatures
gems to be enabled in order to successfully process in the
AssetProcessor.
* Added ly_enable_gems call to make the Camera gem required in Tools,
Builders and Clients.
This is needed as the DefaultLevel.prefab contains an Editor Camera
Component
* Adding the ly_enable_gem call to make the Maestro gem required
CrySystem currently requires Maestro to be enabled in order to
initialize
* Added ly_enable_gems call to the SceneProcessing gem to make it required
The SceneCore and SceneData libraries that are part of the core engine
Code folder requires the SceneProcessing gem to be enabled in order to
invoke the InitializeDynamicModule hooks in DllMain.cpp in order to
initialize those libraries.
* Fixed bad argument in comment for Prefab CMakeLists.txt
* Fixed Assert in Asset Builders due to the Atom RPI Builder
The Atom RPI Builder was enabling the Asset Catalog for the ScriptAsset a second time
The Atom Feature Common EditorSystemCommonComponent.cpp which also loads
in the AssetBuilder is enabling the Asset Catalog for the ScriptAsset
Added BehaviorContext reflection to the OutputDeviceTransformType enum
to fix the BehaviorContext errors about reflecting a method that returns
such an enum
* Added TypeId output to the JsonDeserializer report message about missing
ClassData
Previously the report callback would indicate that the target type was
missing Serialization class data, but didn't indicate the TypeId of the
target type
* Added support to the ly_enable_gems function to be able to support
0 gems being enabled.
Updated the Install step for CMake to propagate any ly_enable_gems
within a CMakeLists.txt for a target into the generated CMakeLists.txt
that is made for each installed IMPORTED target
* Adding newline to the end of the Camera Gem CMakeLists.txt
* Fixing target TYPE parameter for actual Gem Modules to use the GEM_MODULE tag instead of MODULE
* Reverting change to the DESTINATION directory for the installed CMakeLists.txt to use the relative path to the installed directory
* Adding the Atom_Bootstrap gem as a required gem
The Client and GameLaunchers required the Atom_Bootstrap gem in order to create the NativeWindow
Added Atom_Feature_Common client module as a runtime dependency of the AtomLyIntegration CommonsFeature client module
* Fixed register.py --all-projects-path and --all-gems-path arguments to
NOT register projects or gems that are within a template folder
Fixed reading of old pre-1.0 o3de_manifest.json files where the
"engines" key was a json array
* Changed how the relative target source directory is calculated when that source directroy resides outside of the engine root.
The final dirname component is used with a unique SHA256 has to form a <dirname>-<8 char SHA256> folder for installing files into
* Adding newline to the end of Atom_Bootstrap CMakeLists.txt
* Moving ly_enable_gems variants for Tools and Builders inside of PAL_TRAIT_BUILD_HOST_TOOLS block
* Adding a comment to AWSCore.ResourceMappingTool target to indicate that it is not a GEM_MODULE.
Furthermore it cannot be loaded with the Gem system because the library is in a different directory the executable
* Add option to set stencil ref in Dynamic Draw Context
* Add depth/stencil attachment slot to UI pass
* Rework mask rendering to use Atom
* Add missing circle mask image
* [ATOM-15472] Shader Build Pipeline: Remove Deprecated Files And Functions That
Predate The Shader Supervariants
These are the essential impactful changes as a result of deprecating the
ShaderResourceGroupAsset.
* Addressed feedback by @moudgils. Better comments in header files.
* More updates related with deprecation of ShaderResourceGroupAsset
* Deleted the temporary version 2 classes.
* Updated version of the shader asset builders.
* Updated version of all the shader related classes impacted
by the Supervariant concept and deprecation of ShaderResourceGroupAsset
* Changes to *.pass and DGI, Reflections and RayTracing.
* changes to material related assets
* changes to core lights
* Changes to auxgeom/dynamic draw.
* changes to decals, lyshine, imguipass
* changes to RPI Pass classes
* Shader for SceneSrg, ViewSrg and ForwardPass Srgs.
* changes to mesh, skinned mesh, Morphtarget.
* Fixes to RayTracingPass.cpp & now allow empty srg in shaders.
* Updated Atom_RPI.Tests
* Simplified InstanceDatabase by removing AddHandler
------------------------------------------------------------------------------------
* Updated DiffuseGI precompiled shaders.
Added RayTracingSceneSrg and RayTracingMaterialSrg shader asset.
Updated ShaderAssetCreator::Clone to handle the supervariant when processing root variants.
Co-authored-by: Doug McDiarmid <dmcdiar@amazon.com>
------------------------------------------------------------------------------------
* Changed semantics for some PassSrg to SRG_PerPass_WithFallback.
AuxGeom/FixedShapeProcessor.cpp requires SRG_PerDraw on ObjectSrg.
Removed names of SceneSrg and ViewSrg from RPISystemDescriptor.cpp
* Moved ShaderLib/Atom/Features/DummyEntryFunctions.azsli
To Gems/Atom/RPI/Assets/ShaderLib/Atom/RPI/DummyEntryFunctions.azsli
Removed redundant checking for finalization in
ShaderResourceGroupLayout.cpp
* Fixed race condition bug for Shader::FindOrCreate.
InstanceDatabase<>::CreateInstance() needs to be atomic
for instance creation and initialization.
Added optional InstanceHandler::CreateFunctionWithParams to accomodate
to the needs of Instances that need more than an asset reference
to be able to be created an initialzed.
Removed ShaderResourceGroup::FindOrCreate() only ::Create is available
now.
* Renamed scene_and_view_srgs.* as SceneAndViewSrgs.*
Changed GetAzslFileOfOrigin for GetUniqueId
* Fixed unit tests.
* Reverted the serialization name of m_uniqueId back to
"m_azslFileOfOrigin" so precompiled shaders don't fail
in layout comparison.
* Fixed AtomCore.Tests
Removed non-applicable test. InstanceDatabase.AddHandler() is not
available anymore.
* The Null rhi is re-enabled for shader compilation.
Signed-off-by: garrieta <garrieta@amazon.com>
First version of temporal antialiasing and contrast adaptive sharpening for GA. Works well in most cases but still has a few issues that will need additional time. This is only the passes and shaders with no exposure to the editor. TAA and CAS can be turned on by enabling their respective passes in the pipeline.
All of the code has been previously reviewed in smaller PRs into the taa_staging branch:
aws-lumberyard-dev#29
aws-lumberyard-dev#53
aws-lumberyard-dev#73
aws-lumberyard-dev#79
aws-lumberyard-dev#84
Main issues:
- Bloom doesn't play nice with TAA and seems to greatly amplify any flickering
- AuxGeom jitters with the camera, so TAA doesn't currently work well in editor
- Transparencies don't have correct motion vectors. History rectification keeps this from looking too bad, but could still be improved
- There is still more that could be done to inhibit flickering, usually from specular aliasing
- Motion vectors aren't correct on POM unless PDO is turned on, which can result in some blurring during motion.
- SSAO can contribute to flickering in its default half res configuration. Changing this to full res mitigates the problem.
Squashed merge of the following:
* [ATOM-13987] Initial checkin of Taa pass.
* TAA pass setup WIP. (does not work yet due to pass configuration issues).
* Taa WIP - Camera motion vectors fixed and hooked up. TAA does simple reprojection and rejection based on depth.
* Small update to use lerp and add some comments.
* Fix issue with attachments not being set up on bindings at initialization. Fixing issue with half-pixel offsets in TAA shader
* - Motion vector passes now use the same output with mesh motion vectors overwriting camera motion vectors.
- Taa pass now works with multiple pipelines.
- Cleaned up TAA shader a bit.
* Fixes from PR review.
* Adding check for multiple attachments of the same name with different resources in Pass::ImportAttachments().
* Adding camera jitter with configurable position count. Updated TAA to blend in tonemapped space.
* Fixes from PR review. Fixing camera motion vectors for background (infinite distance)
* Updates to taa shader from PR review
* Adding a rcp input color size.
* Fix comment on PassAttachment::Update()
* Updates for PR review.
* Fixing missing const on the FrameAttachment* in Pass's call to FindAttachment()
* Taa WIP - Adding filtering to both the current pixel and history. Adding rectification based on variance clipping. Adding some basic anti-flickering. Removing rejection based on depth.
* Updates from PR code review. Mostly better commenting and naming.
* Adding contrast adaptive sharpening based on AMD FidelityFX CAS to help with the softness added by TAA.
* Changing to using luminance for sharpening instead of just green. Added some comments.
* Moving Taa's NaN check to a better location. Disabling TAA and sharpening in prep for check in.
* Updates from PR feedback.
Updated Material Property Layouts Per Design
- Renamed "Details" group to "Overview".
- Renamed "UV Names" group to "UV Sets".
- Renamed "General" group to "General Settings".
- Renamed "Parallax" group to "Displacement".
- Renamed "Texture Map" properties to just "Texture". In cases where a specific type of texture is mentioned like "roughness texture map" I called this "roughness map" (which is more common according to google).
- Renamed "Heightmap" to "Height map" (which is more common according to google).
- Reordered material property groups according to design review.
- Base Color
- Metallic
- Roughness
- Specular Reflectance F0
- Normal
- Occlusion
- Emissive
- Subsurface
- Clear Coat
- Displacement
- Opacity
- UVs
- Irradiance
- General Settings
ATOM-14002 [Material Editor] Revisit user facing organization and layout of material types
- Renamed "Details" group to "Overview".
- Renamed "UV Names" group to "UV Sets".
- Renamed "General" group to "General Settings".
- Renamed "Parallax" group to "Displacement".
- Renamed "Texture Map" properties to just "Texture". In cases where a specific type of texture is mentioned like "roughness texture map" I called this "roughness map" (which is more common according to google).
- Renamed "Heightmap" to "Height map" (which is more common according to google).
ATOM-14002 [Material Editor] Revisit user facing organization and layout of material types
Removed the parallax invert flags and instead all the materials assume displacement is always specified as heightmaps.
Updated property naming, tooltips, and shader variable names to reflect this.
Updated ParallaxMapping.azsli to treat depthOffset as an offset in depth value rather than an offset in height value, so it matches the fact that ParallaxMapping.azsli always operates in depth values rather than height values.
The only remaining unnecessary enable flag I found was for the parallax property group. It is removed, and now we just use the texture map and useTexture flag to gate whether the feature is enabled.
Copied tinted transparency opacity mode from EnhancedPBR to StandardPBR.
Fixed a bug in EnhancedPBR where Blended opacity didn't work right because the second DrawListOverride functor was stomping on the results of the first DrawListOverride. I removed these functors and made StandardPBR_HandleOpacityMode.lua set the draw list override instead.
Updated material type files for StandardPBR, EnhancedPBR, and Skin to align with each other as much as possible.
There were minor cases like some property settings were different, properties in different order, comments, and formatting.
There were major cases as well, like EnhancedPBR using clunky built in functors where lua functors would be better, property visibility state wasn't right, properties were missing, etc.
I also added a new HasShaderWithTag function for lua functors. This is used in StandardPBR_ShaderEnable.lua to allow this script to be used for both StandardPBR and EnhancedPBR (EnhancedPBR doesn't have the low end pipeline shaders).
ATOM-14676 Depth Based Layer Blending
- Added new blend source options that blends between layers based on which displaced height is higher. These options include Displacement, Displacement_With_BlendMaskTexture, and Displacement_With_BlendMaskVertexColors.
- Significantly refactored and updated the blend and displacement code in StandardMultilayerPBR_Common to support displacement-based blending.
- Added a new blend factor specifically for displacement-based blending that adjusts the transition between the layers independent of the displacement transition.
- Rearranged the per-layer parallax property groups because these are more general than just parallax. They can be used for displacement-based blending regardless of whether a parallax effect is being used.
- Renamed "Parallax Mapping" to "Displacement" because these properties can be used for other things besides parallax, in particular the new displacement-based blend modes.
- Removed the unnecessary per-layer "enable parallax" flags.
- Made the "offset" property always available, so this can be used to adjust displacement for blending purposes even when there is no heightmap or parallax. (The "factor" property still only shows up with a heightmap because its only purpose is to scale the heightmap).
- Solidified a naming convention for how to talk about layer blending:
- "Blend mask" means the R and G channels that mask layers 2-3. These can come from multipls source, including a "blend mask texture" or "blend mask vertex colors".
- "Blend weights" are the final RGB channels that are multiplied and added with layer properties to do the final blend.
- "Blend source" is the combination of data that is used to produce the blend weights, which could be a combination of displacement maps, blend mask texture, vertex colors, or others in the future.
- Updated the list of available debug view modes, and moved them to the "blend" group because the only modes we have right now are related to layer blending.
- Fixed a pre-existing bug where normals could be length 0.
- Added new cc0 textures from https://cc0textures.com/
- Added new materials for testing
New ASV test cases are here: https://github.com/aws-lumberyard/o3de-atom-sampleviewer/pull/67
Updated material types to have default parallax settings of POM, Low quality, 0.05 scale. That way the parallax effect will show up as soon as a user adds a heightmap.
Updated StandardMultilayerPBR_Displacement.lua to control the o_parallax_feature_enabled, so we can have the material's parallax.enable=true by default. Again this is to allow parallax behavior to show up as soon as the user adds a heightmap or adjusts the displacement offset. Note that even though we have a functor to drive the feature based on displacement settings, we still need the parallax.enable flag that that the user can set to false when they want to use displacement blending but not parallax.
Updated test materials to maintain their prior implied settings.
Added a loop to the skin shader that will sample from wrinkle masks, multiply them by a weight, combine them, and use them instead of vertex colors for wrinkle map blending
Added an array of masks, an array of weights, and a wrinkle mask count to the DefaultObjectSrg. -Will create a follow up task to handle this a better way.
Removed motion vector (for now) from skin.materialtype since we're not using them, and removed depthtransparent since skin doesn't support transparency
Added an interface to the MeshFeatureProcessor to get the object srg
Wrapped srg->Compile in if(srg->IsQueuedForCompile()) to prevent compiling twice --This doesn't stop a race condition if both happen at the same time, but that is at least far less likely. It will need a better solution later.
Added a function to the MorphTargetExporter that will check to see if a texture that matches the blend shape name exists in a particular folder, and adds a reference to that image to the MorphTargetMetaAsset --Only supports .tif, and doesn't automatically re-process the .fbx if the folder is updated. These can be improved in later iterations
Added a null check in MaterialTypeSourceData.cpp to fix a crash I ran into
Added a for loop in two places to look for the first submesh that has a morph target, instead of just using the first to check if a lod has morph targets or not. --I have a better fix for this, but it involves more areas of the code, so I'm saving that for another change.
Modified AtomActorInstance to look for any morph targets that have a wrinkle mask reference
Then each frame, for any morph targets with non-zero weights that also have wrinkle masks, it updates the mask array, weights, and count on the object srg.
It wasn't just a matter of using smoothstep, I had to refactor the code to take a different approach to generating blend weights. We really have to avoid any kind of division for normalization of weights because that causes all the blend functions to become non-linear. So with these changes, the blend weights are calculated based on linear interpretation for displacement-based blending too (before only the non-displacement blending used linear interpolation). With that in place, smoothstep can now be used to give a smooth transition.
I'm not sure which of these edge cases may have existed before updating the property handling, and which were caused by it.
- Rearranged the per-layer parallax property groups because these are more general than just parallax. They can be used for displacement-based blending regardless of whether a parallax effect is being used.
-- Renamed "Parallax Mapping" to "Displacement" because these properties can be used for other things besides parallax, in particular the new displacement-based blend modes.
-- Removed the unnecessary per-layer "enable parallax" flags. This also allowed me to remove the StandardMultilayerPBR_ParallaxPerLayer.lua script and replace this with simply a UseTexture functor for each layer.
-- Made the "offset" property always available, so this can be used to adjust displacement for blending purposes even when there is no heightmap or parallax. The "factor" property still only shows up with a heightmap because its only purpose is to scale the heightmap.
-- In order to get the offset to work when there is no texture map, I had to fix the logic a bit in GetLayerDepthValues where it was ignoring the offset.
-- Had to rearrange the logic in StandardMultilayerPBR_Displacement.lua a bit to get this all working, particularly because the per-layer displacement properties are no longer hidden behind an enable flag.
- Change the displacementBlendFactor to displacementBlendDistance because it felt weird when sliding per-layer displacment offset values and seeing this impact the surface property transition. Using an absolute distance value feels more natural.
- Made the displacement blend mask push the displacement down *past* the min displacement value to address edge cases where blend mask 0 didn't actually make a layer disappear. (See GetSubMinDisplacement()).
- Inlined the GetBlendWeightsFromLayerDepthValues code into GetBlendWeights because I realized it was only being used there, and the code is easier to read this way IMO.
- Displacement-based blend weights weren't being normalized in cases where layerDepthBlendDistance is 0, which caused incorrect depth values where two layers meet.
Renamed StandardMultilayerPBR_Parallax.lua to StandardMultilayerPBR_Displacement.lua because it is used for more than just strictly parallax, it generally deals with displcament which can be used for blending even when parallax is disabled.
Updated the terminology (yet again) to hopefully be a bit more clear and consistent.
"Blend mask" means the R and G channels that mask layers 2-3. These can come from multipls source, including a "blend mask texture" or "blend mask vertex colors".
"Blend weights" are the final RGB channels that are multiplied and added with layer properties to do the final blend.
"Blend source" is the combination of data that is used to produce the blend weights, which could be a combination of displacement maps, blend mask texture, vertex colors, or others in the future.
Added another debug render mode, so now we can show either the blend mask and the final blend weights.
ATOM-14688 Disable Individual Layers
- Added new SetMaterialPropertyGroupVisibility functions to the material functors.
- Updated the MaterialFunctor::EditorContext to include parameters for handling material property group metadata.
- Updated the material inspector(s) to apply the property group visiblity changes from the material functor, to hide or show the property groups.
- Moved some code from MaterialPropertyDescriptor.h/cpp to a new MaterialDynamicMetadata.h/cpp, since these aren't really related to the MaterialPropertyDescriptor code. It's more for material functors to use.
- Also fixed the casing for the "GetMaterialPropertyValue_Image" lua function, since I was already in this code (ATOM-14793 "Fix Inconsistent Casing For LuaMaterialFunctorRuntimeContext")
Tested in MaterialEditor and in in the main Editor's MaterialComponent property override inspector.
Added flags for enabling StandardMultilayerPBR layers 2 and 3. This makes it easy to create a two-layer material, or to flip layers off and on for debugging.
Refactored StandardMultilayerPBR to collate all the code for each layer into a couple structs and utility functions. This makes the code easier to maintain, and in particular will make it easy for me to add Enable flags for the layers in a subsequent commit.
Also removed subsurface scattering and translucency from StandardMultilayerPBR, according to ATOM-4120 "Stabilize Standard PBR Regarding Subsurface and Translucency".
Squashed commit of the following:
commit a6052d6ad4f70183d0ce72e84c7dc5512dc24d5e
Author: Chris Santora <santorac@amazon.com>
Date: Tue May 11 16:32:15 2021 -0700
Got the refactor finally working. I had change it to blend the baseColor, spec factor, and metalness before converting to albedo and spec, in order to get exactly the same results as before.
commit 42d6da7f405097dea07b6ed0426d6a662b61440d
Author: Chris Santora <santorac@amazon.com>
Date: Tue May 11 15:58:38 2021 -0700
Fixed clear coat issue due to LightingData initialized too late.
commit 358194a5caf6f9eb99b0e5345ad5f7768b244a93
Author: Chris Santora <santorac@amazon.com>
Date: Tue May 11 15:18:30 2021 -0700
Fixed a couple issues.
commit adb431f8113b945057959db288a7ee2dd825dd69
Author: Chris Santora <santorac@amazon.com>
Date: Tue May 11 12:42:12 2021 -0700
WIP refactor of StandardMultilayerPBR to collate the code for each layer. Also removed subsurface scattering from multilayer.
Changed to lerp-based blending, with an implicit base layer.
Renamed some variables to be more clear (blendWeight instead of blendMask, since the weights could come from vertex colors instead of a texture).
Updated DefaultBlendMask_layers.png to better suit the new layering model. It has a black background and overlapping R, G, and B areas.
Updated some of the test materials UV transforms to better fit the new DefaultBlendMask_layers image.
Added a new test object, which is a plane that has painted vertices.
Note that I updated test criteria in AtomSampleViewer to account for these changes as well.
Added new "Displacment" blend source option that blends between layers based on which displaced height is higher. For now it simply picks the higher of the three. In subsequent commits I'll improve on the blending to allow for some transition.
Recactored GetLayerDepthValues(), GetBlendWeights(), and GetBlendWeightsFromLayerDepthValues() to optimize parallax searches so that the displacment maps are sampled once and used for both parallax and the calculating the blend weights.
Renamed several layer blending types and variables to be more clear.
Added Height Offset support to StandardMultilayerPBR.materialtype.
In order to make this work, I updated the GetDepth callback function to support the option of returning absolute depth values rather than relative depth values. Although I could have done transformations inside the GetDepth function, having this as absolute cleans things up a lot. StandardMultilayerPBR_Parallax.lua functor code now populates the MaterialSRG with displacement min/max values, instead of having to normalize the depth factors for each layer. I think this is easier to understand and work with.
Added Height Offset to each layer of StandardMultilayerPBR.
Updated the naming and description for the parallax factor in each layer, to match the other material types.
I removed the global "factor" material property because it doesn't seem applicable anymore since we have per-layer height offset. We can always add some form of this later if customers ask for it.
Squashed commit of the following:
commit 8df460800ff7058f9fbb01f995efdd5ab53d3d2c
Author: Chris Santora <santorac@amazon.com>
Date: Tue May 4 13:35:27 2021 -0700
Found a workaround for the DXC compiler bug
commit 5d81617285eb42bb7b48eb060234d2cb89249e34
Author: Chris Santora <santorac@amazon.com>
Date: Tue May 4 12:27:22 2021 -0700
Local WIP changes to get a DepthResult struct set up for the GetDepth functions.
galibzon
Guthrie Adams
mrieggeramzn
michabr
Ken Pruiksma
moudgils
Steve Pham
Fabio Anderegg
yuriy0
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Tommy Walton
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mriegger
Gene Walters
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Doug McDiarmid
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Cynthia Lin
mnaumov
hershey5045
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jiaweig
jiaweig
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Qing Tao
Chris Santora
Jonny Galloway
Chris Santora
Terry Michaels
Michael Riegger