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Make the x-ray pulse an asymmetric rising curve

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Replace the symmetric sine with a raised cosine raised to
_XRayPulseShape: a long near-zero plateau, a slow rise and a short
full peak. Both shader halves use the identical formula to stay in
phase.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
adminandClaude Opus 4.8 committed 2026-07-01 21:52:47 +02:00
1 parent ff034870fc
commit ae0e2de7cf
2 files changed
+20 -11
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Assets/Shaders/PlayerCamoLit.shader
+12 -7
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@@ -62,10 +62,13 @@ Shader "Custom/PlayerCamoLit"
[HDR] _XRayColor("X-Ray Overlay Color", Color) = (0,0,0,0)
// Optional breathing pulse for the X-ray glow (driven by _Time). Speed 0 => steady, identical to
// no pulse; strength = modulation depth around the authored intensity. Applied identically to the
// visible (ForwardLit) and occluded (XRayOverlay) halves so they stay in phase.
// no pulse; strength = modulation depth (how far the trough dims below the peak). Shape bends the
// pulse into an asymmetric curve: 1 = smooth (raised-cosine) breathe, higher = a longer near-off
// plateau that rises to a brief full-intensity peak. Applied identically to the visible (ForwardLit)
// and occluded (XRayOverlay) halves so they stay in phase.
_XRayPulseSpeed("X-Ray Pulse Speed", Float) = 3
_XRayPulseStrength("X-Ray Pulse Strength", Range(0,1)) = 0.5
_XRayPulseShape("X-Ray Pulse Shape", Range(1,8)) = 3
_DetailMask("Detail Mask", 2D) = "white" {}
_DetailAlbedoMapScale("Scale", Range(0.0, 2.0)) = 1.0
@@ -260,7 +263,8 @@ Shader "Custom/PlayerCamoLit"
// SRP batcher, see PlayerCamo.hlsl), so there is no CBUFFER-layout match to keep here.
half4 _XRayColor;
half _XRayPulseSpeed; // 0 = steady; otherwise breathing pulse via _Time (same math as the forward half)
half _XRayPulseStrength; // modulation depth of the pulse around the authored intensity
half _XRayPulseStrength; // modulation depth: how far the trough dims below the full-intensity peak
half _XRayPulseShape; // >1 bends the pulse: longer near-off plateau, rising to a brief full peak
struct XRayAttributes
{
@@ -289,10 +293,11 @@ Shader "Custom/PlayerCamoLit"
{
UNITY_SETUP_INSTANCE_ID(input);
UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
// Flat additive glow: HDR rgb is the reveal color, alpha the fade/opacity master.
// Breathing pulse (sin over _Time) on the alpha master; kept in phase with the forward
// half via the shared _Time and identical math. Speed 0 => term is 1 => steady glow.
half xrayPulse = 1.0h + sin(_Time.y * _XRayPulseSpeed) * _XRayPulseStrength;
// Flat additive glow: HDR rgb is the reveal color, alpha the fade/opacity master. Asymmetric
// breathing pulse on the alpha master; kept in phase with the forward half via the shared
// _Time and identical math. Speed 0 => term is 1 => steady glow. See CamoForwardFragment.
half xrayCurve = pow(0.5h - 0.5h * cos(_Time.y * _XRayPulseSpeed), _XRayPulseShape);
half xrayPulse = 1.0h - _XRayPulseStrength * (1.0h - xrayCurve);
return half4(_XRayColor.rgb, _XRayColor.a * xrayPulse);
}
ENDHLSL