Merge branch 'DRTVWR-559' of https://github.com/secondlife/viewer into cronchy

.github/workflows/build.yaml

indra/llrender/llgl.cpp

indra/newview/app_settings/settings.xml

...view/app_settings/shaders/class1/deferred/blurLightF.glsl

...a/newview/app_settings/shaders/class1/deferred/bumpF.glsl

...ew/app_settings/shaders/class1/deferred/deferredUtil.glsl

...p_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl

...ngs/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl

...ngs/shaders/class1/deferred/diffuseAlphaMaskNoColorF.glsl

...ewview/app_settings/shaders/class1/deferred/diffuseF.glsl

...app_settings/shaders/class1/deferred/diffuseIndexedF.glsl

...wview/app_settings/shaders/class1/deferred/emissiveF.glsl

...wview/app_settings/shaders/class1/deferred/exposureF.glsl

...iew/app_settings/shaders/class1/deferred/fullbrightF.glsl

...view/app_settings/shaders/class1/deferred/highlightF.glsl

...wview/app_settings/shaders/class1/deferred/impostorF.glsl

...wview/app_settings/shaders/class1/deferred/materialF.glsl

...view/app_settings/shaders/class1/deferred/pbropaqueF.glsl

...ngs/shaders/class1/deferred/postDeferredGammaCorrect.glsl

...ewview/app_settings/shaders/class1/deferred/terrainF.glsl