wip : Cleaning not used & liminal spaces integration

2026-05-20 16:22:50 +01:00
parent 22de4c8667
commit 7ee8179b0b
109 changed files with 31 additions and 2439 deletions
@@ -0,0 +1,127 @@
+Shader "Custom/HeatHaze"
+{
+    Properties
+    {
+        [Header(Global)]
+        _Weight         ("Global Weight",        Range(0, 1))     = 0.0
+
+        [Header(Distortion)]
+        _Intensity      ("Distortion Intensity", Range(0, 0.05))  = 0.02
+        _Speed          ("Distortion Speed",     Range(0, 5))     = 1.0
+        _Scale          ("Noise Scale",          Range(0, 20))    = 6.0
+
+        [Header(Heat Blur)]
+        _BlurAmount     ("Blur Amount",          Range(0, 1))     = 0.6
+        _BlurSamples    ("Blur Sample Spread",   Range(0, 0.02))  = 0.005
+
+        [Header(Heat Color)]
+        _HeatTint           ("Heat Tint Color",  Color)           = (1.0, 0.45, 0.1, 1)
+        _HeatTintStrength   ("Tint Strength",    Range(0, 1))     = 0.4
+
+        [Header(Heat Vignette)]
+        _VignetteStrength   ("Vignette Strength", Range(0, 1))    = 0.5
+        _VignettePower      ("Vignette Power",    Range(0.5, 5))  = 2.0
+    }
+
+    SubShader
+    {
+        Tags { "RenderType"="Opaque" "RenderPipeline"="UniversalPipeline" }
+        ZWrite Off ZTest Always Cull Off
+
+        Pass
+        {
+            Name "HeatHazePass"
+
+            HLSLPROGRAM
+            #pragma vertex Vert
+            #pragma fragment Frag
+            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+            #include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"
+
+            float  _Weight;
+            float  _Intensity;
+            float  _Speed;
+            float  _Scale;
+            float  _BlurAmount;
+            float  _BlurSamples;
+            float4 _HeatTint;
+            float  _HeatTintStrength;
+            float  _VignetteStrength;
+            float  _VignettePower;
+
+            // ─── NOISE ───────────────────────────────────────────────
+
+            float SmoothNoise(float2 p)
+            {
+                float2 i = floor(p);
+                float2 f = frac(p);
+                f = f * f * (3.0 - 2.0 * f);
+
+                float a = frac(sin(dot(i,               float2(127.1, 311.7))) * 43758.5453);
+                float b = frac(sin(dot(i + float2(1,0), float2(127.1, 311.7))) * 43758.5453);
+                float c = frac(sin(dot(i + float2(0,1), float2(127.1, 311.7))) * 43758.5453);
+                float d = frac(sin(dot(i + float2(1,1), float2(127.1, 311.7))) * 43758.5453);
+
+                return lerp(lerp(a, b, f.x), lerp(c, d, f.x), f.y);
+            }
+
+            // ─── BLUR ────────────────────────────────────────────────
+
+            half3 RadialBlur(float2 uv, float strength)
+            {
+                half3  col    = 0;
+                float  spread = _BlurSamples * strength;
+
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2( spread,  0)).rgb;
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2(-spread,  0)).rgb;
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2( 0,  spread)).rgb;
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2( 0, -spread)).rgb;
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2( spread,  spread) * 0.7071).rgb;
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2(-spread,  spread) * 0.7071).rgb;
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2( spread, -spread) * 0.7071).rgb;
+                col += SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv + float2(-spread, -spread) * 0.7071).rgb;
+
+                return col / 8.0;
+            }
+
+            // ─── FRAGMENT ────────────────────────────────────────────
+
+            half4 Frag(Varyings input) : SV_Target
+            {
+                float2 uv = input.texcoord;
+
+                // Early exit — no effect at weight zero
+                if (_Weight <= 0.001)
+                    return SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, uv);
+
+                float t = _Time.y * _Speed;
+
+                // ── 1. Distortion ─────────────────────────────────────
+                float n1 = SmoothNoise(uv * _Scale       + float2( t * 0.7,  t * 0.3));
+                float n2 = SmoothNoise(uv * _Scale * 1.7 + float2(-t * 0.4,  t * 0.6));
+
+                // Heat rises — distortion stronger at the bottom
+                float  heightMask  = 1.0 - uv.y;
+                float2 distort     = float2(n1 - 0.5, n2 - 0.5) * _Intensity * heightMask * _Weight;
+                float2 distortedUV = uv + distort;
+
+                // ── 2. Base sample + blur ─────────────────────────────
+                half3 sharp   = SAMPLE_TEXTURE2D(_BlitTexture, sampler_LinearClamp, distortedUV).rgb;
+                half3 blurred = RadialBlur(distortedUV, 1.0);
+                half3 col     = lerp(sharp, blurred, _BlurAmount * heightMask * _Weight);
+
+                // ── 3. Heat color tint ────────────────────────────────
+                half3 tint = _HeatTint.rgb;
+                col = lerp(col, col * tint * 1.5, _HeatTintStrength * heightMask * _Weight);
+
+                // ── 4. Heat vignette ──────────────────────────────────
+                float2 vigUV    = abs(uv - 0.5) * 2.0;
+                float  vignette = pow(max(vigUV.x, vigUV.y), _VignettePower);
+                col = lerp(col, col * tint * 2.0, vignette * _VignetteStrength * _Weight);
+
+                return half4(col, 1.0);
+            }
+            ENDHLSL
+        }
+    }
+}