ScriptableRenderPipeline/com.unity.render-pipelines.lightweight/CHANGELOG.md

Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[Unreleased]

Added

• Added camera additional data component to control shadows, depth and color texture.
• pipeline now uses XRSEttings.eyeTextureResolutionScale as renderScale when in XR.

Changed

• Shadow rendering has been optimized for the Mali Utgard architecture by removing indexing and avoiding divisions for orthographic projections. This reduces the frame time by 25% on the Overdraw benchmark.
• Removed 7x7 tent filtering when using cascades.
• Screenspace shadow resolve is now only done when rendering shadow cascades.
• Updated the UI for the Lighweight pipeline asset.

Fixed

• Fixed UnityPerDraw CB layout
• GLCore compute buffer compiler error
• Occlusion strength not being applied on LW standard shaders
• CopyDepth pass is being called even when a depth from prepass is available
• GLES2 shader compiler error in IntegrationTests
• Can't set RenderScale and ShadowDistance by script
• VR Single Pass Instancing shadows

[2.0.0-preview]

Added

• Explicit render target load/store actions were added to improve tile utilization
• Camera opaque color can be requested on the pipeline asset. It can be accessed in the shader by defining a _CameraOpaqueTexture. This can be used as an alternative to GrabPass.
• Dynamic Batching can be enabled in the pipeline asset
• Pipeline now strips unused or invalid variants and passes based on selected pipeline capabilities in the asset. This reduces build and memory consuption on target.
• Shader stripping settings were added to pipeline asset

Changed

Pipeline

• Pipeline code is now more modular and extensible. A ForwardRenderer class is initialized by the pipeline with RenderingData and it's responsible for enqueueing and executing passes. In the future pluggable renderers will be supported.
• On mobile 1 directional light + up to 4 local lights (point or spot) are computed
• On other platforms 1 directional light + up to 8 local lights are computed
• Multiple shadow casting lights are supported. Currently only 1 directional + 4 spots light shadows.

Shading Framework

• Directional Lights are always considered a main light in shader. They have a fast shading path with no branching and no indexing.
• GetMainLight() is provided in shader to initialize Light struct with main light shading data.
• Directional lights have a dedicated shadowmap for performance reasons. Shadow coord always comes from interpolator.
• MainLigthRealtimeShadowAttenuation(float4 shadowCoord) is provided to compute main light realtime shadows.
• Spot and Point lights are always shaded in the light loop. Branching on uniform and indexing happens when shading them.
• GetLight(half index, float3 positionWS) is provided in shader to initialize Light struct for spot and point lights.
• Spot light shadows are baked into a single shadow atlas.
• Shadow coord for spot lights is always computed on fragment.
• Use LocalLightShadowAttenuation(int lightIndex, float3 positionWS) to comppute realtime shadows for spot lights.

Fixed

• Issue that was causing VR on Android to render black
• Camera viewport issues
• UWP build issues
• Prevent nested camera rendering in the pipeline

[1.1.4-preview]

Added

• Terrain and grass shaders ported
• Updated materials and shader default albedo and specular color to midgrey.
• Exposed _ScaledScreenParams to shader. It works the same as _ScreenParams but takes pipeline RenderScale into consideration
• Performance Improvements in mobile

Fixed

• SRP Shader library issue that was causing all constants to be highp in mobile
• shader error that prevented LWRP to build to UWP
• shader compilation errors in Linux due to case sensitive includes
• Rendering Texture flipping issue
• Standard Particles shader cutout and blending modes
• crash caused by using projectors
• issue that was causing Shadow Strength to not be computed on mobile
• Material Upgrader issue that caused editor to SoftLocks
• GI in Unlit shader
• Null reference in the Unlit material shader GUI

[1.1.2-preview]

Changed

• Performance improvements in mobile

Fixed

• Shadows on GLES 2.0
• CPU performance regression in shadow rendering
• Alpha clip shadow issues
• Unmatched command buffer error message
• Null reference exception caused by missing resource in LWRP
• Issue that was causing Camera clear flags was being ignored in mobile

[1.1.1-preview]

Added

• Added Cascade Split selection UI
• Added SHADER_HINT_NICE_QUALITY. If user defines this to 1 in the shader Lightweight pipeline will favor quality even on mobile platforms.

Changed

• Shadowmap uses 16bit format instead of 32bit.
• Small shader performance improvements

Fixed

• Subtractive Mode
• Shadow Distance does not accept negative values anymore

[0.1.24]

Added

• Added Light abstraction layer on lightweight shader library.
• Added HDR global setting on pipeline asset.
• Added Soft Particles settings on pipeline asset.
• Ported particles shaders to SRP library

Changed

• HDR RT now uses what format is configured in Tier settings.
• Refactored lightweight standard shaders and shader library to improve ease of use.
• Optimized tile LOAD op on mobile.
• Reduced GC pressure
• Reduced shader variant count by ~56% by improving fog and lightmap keywords
• Converted LW shader library files to use real/half when necessary.

Fixed

• Realtime shadows on OpenGL
• Shader compiler errors in GLES 2.0
• Issue sorting issues when BeforeTransparent custom fx was enabled.
• VR single pass rendering.
• Viewport rendering issues when rendering to backbuffer.
• Viewport rendering issues when rendering to with MSAA turned off.
• Multi-camera rendering.

[0.1.23]

Added

• UI Improvements (Rendering features not supported by LW are hidden)

Changed

• Shaders were ported to the new SRP shader library.
• Constant Buffer refactor to use new Batcher
• Shadow filtering and bias improved.
• Pipeline now updates color constants in gamma when in Gamma colorspace.
• Optimized ALU and CB usage on Shadows.
• Reduced shader variant count by ~33% by improving shadow and light classification keywords
• Default resources were removed from the pipeline asset.

Fixed

• Fixed shader include path when using SRP from package manager.
• Fixed spot light attenuation to match Unity Built-in pipeline.
• Fixed depth pre-pass clearing issue.

[0.1.12]

Added

• Standard Unlit shader now has an option to sample GI.
• Added Material Upgrader for stock Unity Mobile and Legacy Shaders.
• UI improvements

Changed

• Realtime shadow filtering was improved.

Fixed

• Fixed an issue that was including unreferenced shaders in the build.
• Fixed a null reference caused by Particle System component lights.

[0.1.11]

Initial Release.