This commit is contained in:
JA
2026-07-04 01:48:39 +08:00
parent 6e414a3022
commit aace7e68cc
10 changed files with 408 additions and 5 deletions
@@ -0,0 +1,156 @@
Shader "IndianOcean/AbyssBuilding"
{
// 深渊边缘建筑 Shader v2
//
// 改进(vs v1):
// 1. 世界坐标 Y 替代 UV.y —— 所有建筑在同一世界高度被吞,不受尺寸/Pivot/动画影响
// 2. 颜色和 Alpha 一起渐变 —— 黑暗"侵蚀"进去,而不是硬切
// 3. 噪声扰动吞没线 —— 边缘破碎,不是直线
// 4. 边缘侵蚀发光 —— 过渡带泛幽光,和 AbyssEdgeGlow 衔接
//
// Queue = Transparent(在 DarknessOverlay 之前渲染)
// DarknessOverlay 乘法遮罩控制最终可见性
//
// 搭配:
// - AbyssEdgeGlowQueue +200)放地图断层处
// - AbyssGlowParticleQueue +200)在深渊里撒粒子
// - 建筑用此 shader,底部延伸到 _CutoffY 以下
Properties
{
_MainTex ("精灵贴图", 2D) = "white" {}
_Color ("色调", Color) = (1,1,1,1)
_CutoffY ("深渊吞没线(世界 Y", Float) = 0.0
_Feather ("吞没渐变宽度(世界单位)", Float) = 1.5
_NoiseScale ("噪声缩放(越大越细碎)", Float) = 3.0
_NoiseAmount ("噪声强度 (0=直线 1=强烈破碎)", Range(0,1)) = 0.3
_EdgeColor ("边缘侵蚀色", Color) = (0.15, 0.5, 0.8, 1.0)
_EdgeIntensity ("边缘亮度", Range(0, 5)) = 1.5
}
SubShader
{
Tags
{
"RenderType" = "Transparent"
"Queue" = "Transparent"
"RenderPipeline" = "UniversalPipeline"
"CanUseSpriteAtlas" = "true"
}
Cull Off
ZWrite Off
Blend SrcAlpha OneMinusSrcAlpha
Pass
{
Name "AbyssBuilding"
HLSLPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile_instancing
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
struct Attributes
{
float4 positionOS : POSITION;
float2 uv : TEXCOORD0;
float4 color : COLOR;
UNITY_VERTEX_INPUT_INSTANCE_ID
};
struct Varyings
{
float4 positionCS : SV_POSITION;
float2 uv : TEXCOORD0;
float4 color : COLOR;
float3 positionWS : TEXCOORD1;
UNITY_VERTEX_INPUT_INSTANCE_ID
};
CBUFFER_START(UnityPerMaterial)
float4 _MainTex_ST;
float4 _Color;
float _CutoffY;
float _Feather;
float _NoiseScale;
float _NoiseAmount;
float4 _EdgeColor;
float _EdgeIntensity;
CBUFFER_END
TEXTURE2D(_MainTex);
SAMPLER(sampler_MainTex);
// ---- 简单 2D Value Noise(世界空间一致)----
float hash21(float2 p)
{
p = frac(p * float2(123.34, 456.21));
p += dot(p, p + 34.345);
return frac(p.x * p.y);
}
float noise2D(float2 p)
{
float2 i = floor(p);
float2 f = frac(p);
float a = hash21(i);
float b = hash21(i + float2(1, 0));
float c = hash21(i + float2(0, 1));
float d = hash21(i + float2(1, 1));
float2 u = f * f * (3.0 - 2.0 * f);
return lerp(lerp(a, b, u.x), lerp(c, d, u.x), u.y);
}
Varyings vert(Attributes input)
{
Varyings output;
UNITY_SETUP_INSTANCE_ID(input);
UNITY_TRANSFER_INSTANCE_ID(input, output);
output.positionWS = TransformObjectToWorld(input.positionOS.xyz);
output.positionCS = TransformWorldToHClip(output.positionWS);
output.uv = input.uv;
output.color = input.color;
return output;
}
half4 frag(Varyings input) : SV_Target
{
half4 tex = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, input.uv);
half3 albedo = tex.rgb * input.color.rgb * _Color.rgb;
half alpha = tex.a * input.color.a * _Color.a;
// ---- 世界坐标 Y 做吞没线 ----
float worldY = input.positionWS.y;
// 噪声扰动吞没线高度(基于世界 XZ,跨建筑一致)
float n = noise2D(input.positionWS.xz * _NoiseScale);
float noisyCutoff = _CutoffY + (n - 0.5) * _NoiseAmount * _Feather * 2.0;
// fade: 0 = 完全被吞, 1 = 完全可见
float fade = smoothstep(
noisyCutoff - _Feather,
noisyCutoff + _Feather,
worldY
);
// ---- 颜色和 Alpha 一起渐变 ----
// 黑暗"吃进去"而不是硬切
half3 finalColor = albedo * fade;
half finalAlpha = alpha * fade;
// ---- 边缘侵蚀发光 ----
// 在过渡带(fade ≈ 0.1~0.4)泛光,模拟深渊腐蚀边缘
float edge = smoothstep(0.0, 0.12, fade) * (1.0 - smoothstep(0.12, 0.45, fade));
finalColor += _EdgeColor.rgb * edge * _EdgeIntensity;
// 边缘也补一点 Alpha,让发光看得见
finalAlpha += edge * _EdgeIntensity * 0.3;
// 丢弃几乎全透明的像素
clip(finalAlpha - 0.001);
return half4(finalColor, finalAlpha);
}
ENDHLSL
}
}
FallBack Off
}