You'll find an explanation of what the mod does here.
Get CKAN and use it to install Deferred. CKAN is recommended because it automatically handles dependencies and mod conflicts.
Go to releases and grab the latest .zip. Unzip it, merge the provided GameData folder with your game's GameData folder (typically C:\Program Files\Steam\SteamApps\common\Kerbal Space Program\GameData).
Get the latest version of Shabby and install it in the same way.
Get the latest version of HarmonyKSP and install it in the same way.
You should see the following folder structure:
Kerbal Space program
└──────GameData
├──────000_Harmony
├──────Shabby
└──────zzz_Deferred
Make sure you downloaded the release linked above and not the code, if you see Deferred-Master you messed up and downloaded the code.
Check the mod compatibility list below and update mods as needed.
To report an issue add screenshots of the issue, reproduction steps and your KSP.log file, otherwise your report may not be taken into account.
Traditional transparency doesn't work in deferred rendering for opaque objects (only used in the editors in KSP). To emulate transparency, a stylized dissolve effect (left on the below image) is used on fairing-only shaders.
A dithering effect (right on the below image) can be applied on regular shaders but is disabled by default because it is distracting (you'll find an option in the settings file).
In no particular order. Mods that say "renders in forward" means they may appear to render correctly but get no deferred benefits for now (no lighting perf improvements, not compatible with any deferred ambient/lighting/effects)
| Mod | Status | Notes |
|---|---|---|
| Textures Unlimited | Compatible via the latest version on CKAN or github | |
| Parallax | Compatible via the latest version | |
| Conformal decals | Renders in forward via the latest version, otherwise incompatible | |
| B9 Procedural Wings | Compatible via the latest version | |
| Scatterer | Compatible | |
| EVE-Redux | Compatible | |
| Volumetric clouds (and related Scatterer versions) | Fixed individual DLLs can be downloaded here for v3 and v4, or full updated downloads are provided on Patreon if you still have access. v1 and v2 appear to be compatible | |
| TUFX | Compatible | |
| Kopernicus | Compatible | |
| Waterfall | Compatible | |
| KerbalVR | Compatible | |
| SimpleAdjustableFairings | Compatible | |
| KerbalKonstructs | Compatible | |
| Engine Lighting | Compatible | |
| Kronal Vessel Viewer | Compatible | |
| KSRSS | Compatible | |
| RSS | Compatible | |
| PlanetShine | Compatible, but obsolete at default settings. Use if you have custom settings, want more control over lighting and know what you are doing | |
| RasterPropMonitor | Use compatible fork or wait for merge in official version | |
| ASET IVA Props and related mods | Use compatible RPM fork, otherwise black outline around labels | |
| Magpie Mods | If you must use it, get latest compatible TU version then replace deprecated shaders in configs | |
| FreeIVA | Mostly compatible, other parts of the craft will appear hollow when see through windows | |
| Shaddy | Renders in forward | |
| NeptuneCamera | Incompatible | |
| ProceduralFairings | Incompatible, white fairings on hover | |
| Camera mods | Unknown/untested |
Using alt + d ( right shift + d on linux) will bring up a simple debug menu cycling between the contents of the g-buffer (albedo, normals, smoothness, specularColor, occlusion) and a composite of the emission+calculated ambient
Transparencies and incompatible forward shaders will render on top of the debug visualization, ignoring the g-buffer mode selected. This can also be used to identify incompatible/forward shaders (ignoring transparencies)
Only 3 bits of the stencil buffer appear to be available in deferred rendering because the rest are used internally by Unity. This is undocumented for version 2019.4 of Unity but the available bits appear to be bits 0, 1, and 5, which correspond to values 1, 2, and 32. Because this is undocumented this usage could turn out to be wrong and bugs may be discovered in the future. Later versions of the documentation say that only bit 5 is actually available, this may not be true for 2019.4 and seems to work in KSP.
Stencil buffer is useful for applying post effects selectively to certain surfaces, we can take advantage of it here since we are using new shaders and can implement stencil everywhere. I propose the following stencil values be used for masking, they are already used by this mod for replaced shaders:
| Surface/Shader type | Stencil value | Notes |
|---|---|---|
| Parts | 1 | |
| Terrain (stock/parallax) | 2 | Already used in this mod to emulate the PQS's alpha fade to scaled, since it is impossible to do alpha blending otherwise in deferred (dithering looked really bad here and caused other issues with visual mods) |
| Local scenery (buildings + stock/parallax scatters) | 3 | |
| Parallax grass | 32 | Parallax grass has normals that point upwards, matching the terrain and not the grass itself so it might be worthwhile to have a separate stencil value for it, for any image effects that might need accurate normals |
To write stencil values from a shader, add a stencil block with the stencil value to write, e.g for parts:
Tags { "RenderType"="Opaque" }
Stencil
{
Ref 1
Comp Always
Pass Replace
}
CGPROGRAM
...
For testing/checking stencil values in a post effect, multiple approaches can be used as seen in https://docs.unity3d.com/Manual/SL-Stencil.html
Here are examples to check for the surfaces above or combinations of them
Check only for value 1
Stencil
{
Ref 1
Comp Equal
ReadMask 35
Pass Keep
}
Check only for value 2
Stencil
{
Ref 2
Comp Equal
ReadMask 35
Pass Keep
}
Check only for value 3
Stencil
{
Ref 3
Comp Equal
ReadMask 35
Pass Keep
}
Check only for value 32
Stencil
{
Ref 32
Comp Equal
ReadMask 35
Pass Keep
}
Check for values less or equal to 3 greater than 1
Stencil
{
Ref 1
Comp Less
ReadMask 3
Pass Keep
}
Check for values less or equal to 35 greater than 1
Stencil
{
Ref 1
Comp Less
ReadMask 35
Pass Keep
}
Check for values less or equal to 35 greater than 2
Stencil
{
Ref 2
Comp Less
ReadMask 35
Pass Keep
}
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