Changelog

[2018.2 undecided]

Add stripper of shader variant when building a player. Save shader compile time.
Disable per-object culling that was executed in C++ in HD whereas it was not used (Optimization)
Enable texture streaming debugging (was not working before 2018.2)
Added Screen Space Reflection with Proxy Projection Model
Support correctly scene selection for alpha tested object
Add per light shadow mask mode control (i.e shadow mask distance and shadow mask). It use the option NonLightmappedOnly
Add geometric filtering to Lit shader (allow to reduce specular aliasing)
Allow to double click on a render pipeline asset to setup it automatically in GraphicSettings.

Removed GlobalLightLoopSettings.maxPlanarReflectionProbes and instead use value of GlobalLightLoopSettings.planarReflectionProbeCacheSize
Changed SupportForwardOnly to SupportOnlyForward in render pipeline settings

Configure the VolumetricLightingSystem code path to be on by default
Trigger a build exception when trying to build an unsupported platform
Introduce the VolumetricLightingController component, which can (and should) be placed on the camera, and allows one to control the near and the far plane of the V-Buffer (volumetric "froxel" buffer) along with the depth distribution (from logarithmic to linear)
Add 3D texture support for DensityVolumes
Add a better mapping of roughness to mipmap for planar reflection
The VolumetricLightingSystem now uses RTHandles, which allows to save memory by sharing buffers between different cameras (history buffers are not shared), and reduce reallocation frequency by reallocating buffers only if the rendering resolution increases (and suballocating within existing buffers if the rendering resolution decreases)
Add a Volumetric Dimmer slider to lights to control the intensity of the scattered volumetric lighting
Add UV tiling and offset support for decals.

Remove Resource folder of PreIntegratedFGD and add the resource to RenderPipeline Asset
Default number of planar reflection change from 4 to 2
Rename _MainDepthTexture to _CameraDepthTexture
The VolumetricLightingController has been moved to the Interpolation Volume framework and now functions similarly to the VolumetricFog settings
Update of UI of cookie, CubeCookie, Reflection probe and planar reflection probe to combo box
Allow enabling/disabling shadows for area lights when they are set to baked.
Hide applyRangeAttenuation and FadeDistance for directional shadow as they are not used

Fix ConvertPhysicalLightIntensityToLightIntensity() function used when creating light from script to match HDLightEditor behavior
Fix numerical issues with the default value of mean free path of volumetric fog
Fix the bug preventing decals from coexisting with density volumes
Fix issue with alpha tested geometry using planar/triplanar mapping not render correctly or flickering (due to being wrongly alpha tested in depth prepass)
Fix meta pass with triplanar (was not handling correctly the normal)
Fix preview when a planar reflection is present
Fix Camera preview, it is now a Preview cameraType (was a SceneView)
Fix handling unknown GPUShadowTypes in the shadow manager.
Fix area light shapes sent as point lights to the baking backends when they are set to baked.
Fix unnecessary division by PI for baked area lights.
Fix line lights sent to the lightmappers. The backends don't support this light type.
Fix issue with shadow mask framesettings not correctly taken into account when shadow mask is enabled for lighting.
Fix directional light and shadow mask transition, they are now matching making smooth transition
Fix banding issues caused by high intensity volumetric lighting
Fix the debug window being emptied on SRP asset reload
Fix issue with debug mode not correctly clearing the GBuffer in editor after a resize
Fix issue with ResetMaterialKeyword not resetting correctly ToggleOff/Roggle Keyword
Fix issue with motion vector not render correctly if there is no depth prepass in deferred

Screen Space Refraction projection model (Proxy raycasting, HiZ raymarching)
Screen Space Refraction settings as volume component
Added buffered frame history per camera
Port Global Density Volumes to the Interpolation Volume System.
Optimize ImportanceSampleLambert() to not require the tangent frame.
Generalize SampleVBuffer() to handle different sampling and reconstruction methods.
Improve the quality of volumetric lighting reprojection.
Optimize Morton Order code in the Subsurface Scattering pass.
Planar Reflection Probe support roughness (gaussian convolution of captured probe)
Use an atlas instead of a texture array for cluster transparent decals
Add a debug view to visualize the decal atlas
Only store decal textures to atlas if decal is visible, debounce out of memory decal atlas warning.
Add manipulator gizmo on decal to improve authoring workflow
Add a minimal StackLit material (work in progress, this version can be used as template to add new material)

EnableShadowMask in FrameSettings (But shadowMaskSupport still disable by default)
Forced Planar Probe update modes to (Realtime, Every Update, Mirror Camera)
Removed Planar Probe mirror plane position and normal fields in inspector, always display mirror plane and normal gizmos
Screen Space Refraction proxy model uses the proxy of the first environment light (Reflection probe/Planar probe) or the sky
Moved RTHandle static methods to RTHandles
Renamed RTHandle to RTHandleSystem.RTHandle
Move code for PreIntegratedFDG (Lit.shader) into its dedicated folder to be share with other material
Move code for LTCArea (Lit.shader) into its dedicated folder to be share with other material

Fix fog flags in scene view is now taken into account
Fix sky in preview windows that were disappearing after a load of a new level
Fix numerical issues in IntersectRayAABB().
Fix alpha blending of volumetric lighting with transparent objects.
Fix the near plane of the V-Buffer causing out-of-bounds look-ups in the clustered data structure.
Depth and color pyramid are properly computed and sampled when the camera renders inside a viewport of a RTHandle.
Fix decal atlas debug view to work correctly when shadow atlas view is also enabled

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