SL-19560 Revert hacky fix for other avatars having low res BoM textures.  Fix for brightening of PBR materials at the shadow horizon.

DRTVWR-559 Balance night scenes against release, nudge glow down a smidge, remove exposure correction from legacy fullbright balance PBR materials against legacy.

SL-19564 Rebalance exposure and sky.  Hack legacy diffuse map saturation and brightness to allow ACES Hill all the time.

SL-19538 Followup -- scrub all possible sources of NaNs, make dynamic exposure controls not persist, limit exposure range, and do a debug gl pass.

* SL-19538 Remove hacky ambiance scale and take the mittens off probe ambiance values.  Fix for sky brightening being done in sRGB space.

SL-19477 Remove angular attenuation from sphere probe weight to fix harsh indirect lighting.  Minor incidental decruft.

SL-19281 Unify handling of haze and gamma between fullbright and not and move haze back to sRGB color space to stay consistent with sky colors.  Also fix broken "roughness" stuck at 0.2.

SL-19226 Reimplement water fresnel offset/scale, exposure balance for midday, adjust reflections off, and decruft depth buffer error correction shenanigans that are no longer used.

SL-19265: Fix precision issue with texture transforms by moving transform matrix calculation into the shader

SL-19212 Resurrect glare and apply to PBR materials as well (and fix color mismatch in legacy alpha vs opaque).

SL-19228: Fix GLTF texture transform rotation and add UV debug (PBR only). See textureUtilV.glsl for UV coordinate comments

SL-19148 Decruft followthrough -- fix for crash when running from installer.  Feed fresnel component into PBR alpha.  Remove obsolete "shader_hierarchy.txt", remove redundant LL_PROFILE_ZONE_SCOPED, remove unused shader feature flag.

* SL-19203 WIP -- Integrate SSR with reflection probes.  Decruft LLRenderTarget.

* SL-19203 WIP -- Re-integrate SSR.  Incidental decruft.

* SL-19203 WIP -- SSR frame delta correction (still broken for Z)

* SL-19203 WIP -- SSR frame delta Z fix

* SL-19203 WIP -- Make SSR toggleable again and disable SSR in cube snapshots.

* SL-19203 WIP -- Soften sphere probe transitions and fix reflections on void water (make fallback probe a simple terrain+water+sky probe).  Remove parallax correction for automatic probes to reduce artifacts.

* SL-19203 Tune probe blending.

* SL-19203 Cleanup.

SL-18662

Jonathan Goodman authored 2 years ago and David Parks committed 2 years ago

First pass of Screen Space Reflections

Approved-by: Dave Parks

SL-18485: Render GLTF materials with extension KHR_texture_transform with approprate texture transforms

SL-18190 Cleanup -- convert some vec4's to vec3's (as they really are), remove some unused glsl files.

SL-18190 Fix alpha not playing nice with water surface by split LLDrawPoolAlpha into two passes, one above water, one below water, and clip against water plane.  Currently brute forces two complete alpha passes, still need to cull against water plane and add support for fullbright shaders.

SL-18190 Use funky distance based error correction only on water surface (revisit for general use later).

SL-18293, SL-18190 -- Fix for debug displays not showing up (wireframe still busted).  WIP on reflection probe/PBR driven water shader.

Port required changes to render rainbows and sun dogs to class1 deferred sky shader and remove redundant and slow class2 version.

# Conflicts:
#	indra/newview/app_settings/shaders/class2/deferred/skyF.glsl

SL-18239 Unify PBR and non-PBR treatment of ambient/SSAO/irradiance.  Restore SSAO to release version.

SL-18190 End of linear space odyssey -- just eat the conversions in atmosphericsFuncsF for sunlight and additive, but leave linear ambient in tact.