erik/acdream
1
0
Fork 0
Code Issues Pull requests Projects Releases 6 Packages Wiki Activity Actions

fix #427: sky drawn without fog like retail; world fog range is the keyframe's authored MinWorldFog/MaxWorldFog

Browse source 
Two April stand-ins, neither registered, met at the horizon from altitude as
a hard line between the dome's rim and the fog-coloured clear:

1. sky.frag fogged every non-additive sky layer with a 0.2 floor. Retail's
   GameSky::Draw @0x00506FF0 disables fixed-function fog around the whole
   sky draw unless an AdminEnvirons fog override is active (SetFFFogEnable(
   LScape::m_override_enabled ? 1 : 0)); additive layers stay unfogged via
   SetFFFogAlphaDisabled(1) at D3DPolyRender::SetSurface 0x59c882. The sky
   pass now sets ApplyFog only for (override active && !additive), with no
   floor.
2. WorldRenderFrameBuilder overwrote the authored fog range with one derived
   from the streaming window (538..2189 m always). Retail sets FOGSTART/
   FOGEND straight from the keyframe's MinWorldFog/MaxWorldFog
   (SkyDesc::GetWorldFog @0x00500CE0 -> SetFFFogProperties @0x005A2F70) with
   no draw-distance scaling; zfar is a constant 4000 m. The builder now
   leaves SceneLightingUbo.Build's values alone; ACDREAM_FOG_START_MULT /
   _END_MULT are deleted from RuntimeOptions.

Guards: SkyFogRuleTests (source-level, the sky renderer has no hermetic
harness); sky.frag.spv re-pinned in VulkanShaderManifestTests with the
reason. Research note 2026-04-23-sky-fog.md carries a correction banner.
App hermetic 6,070/0, Core 4,707/0 (Release). Owner look gate owed: night
and rain fog are now retail's shorter authored ranges.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-08-23 13:42:42 +02:00
parent 517d17b4b3
commit cc42edc8e3
11 changed files with 180 additions and 62 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/AcDream.App/RuntimeOptions.cs
View file

@ -81,8 +81,6 @@ public sealed record RuntimeOptions(
/// <summary>Diagnostic-only initial orbit elevation in degrees. Null keeps
/// the normal camera default.</summary>
float? InitialOrbitPitchDegrees,
float FogStartMultiplier,
float FogEndMultiplier,
ResidencyBudgetOptions ResidencyBudgets,
StreamingWorkBudgetOptions StreamingWorkBudgets,
string? VulkanDeviceOverride,
@ -207,8 +205,6 @@ public sealed record RuntimeOptions(
InitialOrbitPitchDegrees:
TryParseOrbitPitchDegrees(
env("ACDREAM_ORBIT_PITCH_DEGREES")),
FogStartMultiplier: TryParseFloat(env("ACDREAM_FOG_START_MULT")) ?? 0.7f,
FogEndMultiplier: TryParseFloat(env("ACDREAM_FOG_END_MULT")) ?? 0.95f,
ResidencyBudgets: ResidencyBudgetOptions.Parse(env),
StreamingWorkBudgets: StreamingWorkBudgetOptions.Parse(env),
// Physical-device override, matched as a decimal index first and then