fix raymarching depth; add old rm shaders

Assets/pen/Pen.unity

@@ -246,7 +246,7 @@ TrailRenderer:
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+  m_MinVertexDistance: 0.003
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Assets/raymarched/Interactive.meta

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Assets/raymarched/Interactive/Raymarch_multi.mat

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Assets/raymarched/Interactive/Raymarch_secondary.mat

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Assets/raymarched/Interactive/raymarcher.cginc

@@ -171,14 +171,18 @@ fragOut frag (v2f i) {
 
 	// col.rgb = max(dot(n, normalize(float3(1,0.5,1))), 0.05f);
 
-	col.rgb = lerp(0, float3(0,1,1), pow(1 - dot(-rd, n), 2));
+	col.rgb = lerp(0, float3(0,1,1), pow(1 - dot(-rd, n), 3));
 
 	// col *= float4(d, 1, 1, 1);
 	fragOut o;
 	o.col = col;
 	// o.col = _LightColor0;
 	float4 vClipPos = mul(UNITY_MATRIX_VP, mul(unity_ObjectToWorld, float4(p, 1)));
-	o.depth = (vClipPos.z / vClipPos.w + 1.0) * 0.5;
+	float zDepth = vClipPos.z / vClipPos.w;
+    #if !defined(UNITY_REVERSED_Z) // basically only OpenGL (unity editor on linux)
+    zDepth = zDepth * 0.5 + 0.5; // remap -1 to 1 range to 0.0 to 1.0
+    #endif
+	o.depth = zDepth;
 	return o;
 }
 

Assets/raymarched/Interactive/rm_combined.shader

@@ -0,0 +1,192 @@
+Shader "CrispyPin/RaymarchMultiObject"
+{
+	Properties
+	{
+        [Header(Object positions)]
+        _ObjectA ("Object A", Vector) = (0, 0, 0)
+		[Header(Raymarcher Properties)]
+		_MaxSteps ("Max steps", Int) = 256
+		_MaxDist ("Max distance", Float) = 100
+		_SurfDist ("Surface distance threshold", Range(0.00001, 0.05)) = 0.001
+	}
+	SubShader
+	{
+		Tags { "RenderType"="Opaque" }
+		Cull Off
+		LOD 100
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+
+
+            #include "UnityCG.cginc"
+            #include "UnityLightingCommon.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+            };
+
+            struct v2f
+            {
+                float4 vertex : SV_POSITION;
+                float3 ro : TEXCOORD1;
+                float3 hitPos : TEXCOORD2;
+            };
+
+            struct fragOut
+            {
+                fixed4 col : SV_Target;
+                float depth : SV_Depth;
+            };
+
+            int _MaxSteps;
+            float _MaxDist;
+            float _SurfDist;
+            float3 _ObjectA;
+
+            v2f vert (appdata v) {
+                v2f o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                //object space
+                o.ro = mul(unity_WorldToObject, float4(_WorldSpaceCameraPos, 1));
+                o.hitPos = v.vertex;
+                //world space
+                //o.ro = _WorldSpaceCameraPos;
+                //o.hitPos = mul(unity_ObjectToWorld, v.vertex);
+                return o;
+            }
+
+            float smin(float a, float b, float k) {
+                return min(a, b) - pow(max(k - abs(a-b), 0), 3)/(6*k*k);
+            }
+
+            float sdSphere(float3 p, float3 o, float r) {
+                return length(p - o) - r;
+            }
+
+            float sdBox(float3 p, float3 dim) {
+                return length(float3(
+                    max(abs(p.x) - dim.x/2.0, 0),
+                    max(abs(p.y) - dim.y/2.0, 0),
+                    max(abs(p.z) - dim.z/2.0, 0)));
+            }
+
+            float sdLine(float3 p, float3 a, float3 b, float r) {
+                float3 pa = p - a;
+                float3 ba = b - a;
+                float h = clamp(dot(pa, ba) / dot(ba, ba), 0, 1);
+                return length(pa - ba * h) - r;
+            }
+
+            float sdCappedTorus( float3 p, float2 sc, float ra, float rb) {
+            p.x = abs(p.x);
+            float k = (sc.y*p.x>sc.x*p.y) ? dot(p.xy,sc) : length(p.xy);
+            return sqrt( dot(p,p) + ra*ra - 2.0*ra*k ) - rb;
+            }
+
+            float3 RotateY(float3 p, float a) {
+                return mul(float3x3(cos(a), 0, sin(a), 0, 1, 0, -sin(a), 0, cos(a)), p);
+            }
+
+            float Kijetesantakalu(float3 p, float r) {
+                float d = sdSphere(p, float3(0, 0, 0.2f), r);// left eye
+                d = min(d, sdSphere(p, float3(0.15f, 0, 0.2f), r)); // right eye
+                d = min(d, sdLine(p, float3(0, 0, -0.4f), float3(-0.35f, 0, -0.4f), r)); // bottom line
+                d = smin(d, sdLine(p, float3(0, 0, -0.4f), float3(-0.1f, 0, -0.15f), r), 0.003f); // leg hook
+                d = min(d, sdLine(p, float3(0.15f, 0, -0.4f), float3(0.15f, 0, -0.1f), r)); // middle leg
+                d = min(d, sdLine(p, float3(0.3f, 0, -0.4f), float3(0.3f, 0, 0), r)); // front leg
+                d = smin(d, sdLine(p, float3(0.45f, 0, 0.1f), float3(0.3f, 0, 0), r), 0.003f); // lower snout
+                d = smin(d, sdLine(p, float3(0.45f, 0, 0.1f), float3(0.2f, 0, 0.35f), r), 0.003f); // upper snout
+                d = smin(d, sdLine(p, float3(0.2f, 0, 0.45f), float3(0.2f, 0, 0.35f), r), 0.003f); // ear
+                float an = 0.9;
+                d = smin(d, sdCappedTorus((RotateY(p, 0.8f) - float3(0.15f, 0, -0.05f)).xzy, float2(sin(an),cos(an)), 0.4, r), 0.003f); // ear
+                d = smin(d, sdLine(p, float3(-0.25f, 0, 0), float3(-0.25f, 0, -0.4f), r), 0.003f); // back
+                d = smin(d, sdLine(p, float3(-0.25f, 0, -0.1f), float3(-0.35f, 0, -0.1f), r), 0.003f); // tail top
+                d = smin(d, sdLine(p, float3(-0.35f, 0, -0.1f), float3(-0.35f, 0, -0.4f), r), 0.003f); // stripe
+                an = 3.1415f*0.5;
+                d = smin(d, sdCappedTorus((RotateY(p, an) - float3(-0.25f, 0, 0.35f)).xzy, float2(sin(an),cos(an)), 0.15f, r), 0.003f); // tail
+
+                return d;
+            }
+
+            float FirstShape(float3 p) {
+                return Kijetesantakalu(p, 0.05f);
+            }
+
+            float SecondShape(float3 p) {
+                // return sdBox(p, 0.3f) - 0.01f;
+                // return Kijetesantakalu(p, 0.04f) - 0.01f;
+                return sdSphere(p, 0, 0.3f);
+            }
+
+
+            float GetDist(float3 p) {
+
+                float first = FirstShape(p);
+                // float3 second_pos = mul(unity_WorldToObject, _WorldSpaceLightPos0);
+                float second = SecondShape(p - _ObjectA);
+                return smin(first, second, 0.15f);
+
+            }
+
+            //marches a ray through the scene
+            float Raymarch(float3 ro, float3 rd) {
+                float rayLen = 0;// total distance marched / distance from origin
+                float dist; // distance from the raymarched scene
+                for ( int i = 0; i < _MaxSteps; i++)
+                {
+                    //position = origin + distance * direction
+                    float3 p = ro + rayLen * rd;
+                    dist = GetDist(p);
+                    rayLen += dist;// move forward
+                    if (dist < _SurfDist || rayLen > _MaxDist) {
+                        break;
+                    }
+                }
+
+                return rayLen;
+            }
+
+            float3 GetNormal(float3 p) {
+                float2 e = float2(0.001, 0);
+                float3 n = GetDist(p) - float3(
+                    GetDist(p-e.xyy),
+                    GetDist(p-e.yxy),
+                    GetDist(p-e.yyx));
+                return normalize(n);
+            }
+
+            fragOut frag (v2f i) {
+                float3 ro = i.ro;
+                float3 rd = normalize(i.hitPos - ro);
+
+                float d = Raymarch(ro, rd);
+                fixed4 col = 1;
+
+                if (d >= _MaxDist)
+                {
+                    discard;
+                }
+                float3 p = ro + rd * d;
+                float3 n = GetNormal(p);
+
+                // col.rgb = max(dot(n, normalize(float3(1,0.5,1))), 0.05f);
+
+                col.rgb = lerp(0, float3(0,1,1), pow(1 - dot(-rd, n), 2));
+
+                // col *= float4(d, 1, 1, 1);
+                fragOut o;
+                o.col = col;
+                // o.col = _LightColor0;
+                float4 vClipPos = mul(UNITY_MATRIX_VP, mul(unity_ObjectToWorld, float4(p, 1)));
+                o.depth = (vClipPos.z / vClipPos.w + 1.0) * 0.5;
+                return o;
+            }
+
+			ENDCG
+		}
+    }
+}

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Assets/raymarched/Raymarching.unity

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+  m_Enabled: 1
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+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 884043981}
+  m_Mesh: {fileID: 10207, guid: 0000000000000000e000000000000000, type: 0}
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@@ -449,7 +747,7 @@ Transform:
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   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0.844, y: -0.907, z: 0.117}
+  m_LocalPosition: {x: 0.844, y: 0.389, z: 0.117}
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   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: -0.452, y: 0.221, z: -0.124}
+  m_LocalPosition: {x: -0.452, y: 0.221, z: -0.984}
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   m_Children: []
   m_Father: {fileID: 0}
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+  m_Father: {fileID: 779234489}
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+  areaOffset: {x: 0, y: 0, z: 0}
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+  allowedTypes:
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+  exitTasks: []
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Assets/test/Demo3.shader

@@ -0,0 +1,92 @@
+Shader "Demo/pulsating"
+{
+    Properties
+    {
+        [Header(Lighting)]
+        _SunPos ("Sun position", Vector) = (8, 4, 2)
+
+        [Header(Raymarcher Properties)]
+        _MaxSteps ("Max steps", Int) = 256
+        _MaxDist ("Max distance", Float) = 256
+        _SurfDist ("Surface distance threshold", Range(0.00001, 0.05)) = 0.001
+
+    }
+    SubShader
+    {
+        Tags { "RenderType"="Opaque" }
+        Cull Off
+        LOD 100
+
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            // #define USE_WORLD_SPACE
+            #define DYNAMIC_QUALITY
+            #define USE_REFLECTIONS
+            // #define CONSTRAIN_TO_MESH
+            #define MAX_REFLECTIONS 1
+            #include "RayMarchLib.cginc"
+
+            float3 _SunPos;
+
+            sdfData gyroid(float3 p, float scale, float bias, material mat = DEFMAT)
+            {
+                sdfData o;
+                o.dist = abs(dot(sin(p * scale), cos(p.zxy * scale))+bias) - 0.2;
+                o.dist *= .75 / scale;
+                o.mat = mat;
+                return o;
+            }
+
+
+            sdfData scene(float3 p)
+            {
+                sdfData o;
+                material mRed = mat(.12, 0.01, 0.01, sin(_Time*100)*0.1+0.6);
+                float3 bias = -pow(sin(_Time*60 + p.y*0.1), 8)*.5+1.3;
+                o = gyroid(p, .5, bias, mRed);
+                //o = sdfTorus(p, 10 + pow(sin(_Time*50), 4)*5, bias+sin(100*_Time + .1*p.x)*0.5+.5, cRed);
+                float3 gp = p + sin(_Time + p*0.1);
+                o.dist -= gyroid(gp, 1.63,   .5).dist * 0.3;
+                o.dist += gyroid(gp, 3.327,   0).dist * 0.1;
+                o.dist += gyroid(gp, 7.351,  .5).dist * 0.1;
+                o.dist -= gyroid(gp, 17.351, .5).dist * 0.05;
+                o.dist -= gyroid(gp, 23.521, .2).dist * 0.05;
+                o = sdfAdd(p, o, sdfSphere(p, 6 + bias*3, mRed), 5);
+
+                // o = sdfInter(p, o, sdfSphere(p, 50, mat(0.04, 0.005, 0.035)), 1.1);
+                o = sdfInter(p, o, sdfBox(p, 20,  mRed));
+                //sdfData bobby = sdfSphere(p, 51, col(0.5, 0.25, 0.001));
+                //bobby = sdfAdd(p, bobby, sdfSphere(p, 50.5, col(.5,.01,.01)));
+                //bobby = sdfSub(p, bobby, sdfSphere(p, 50));
+                //o = sdfAdd(p, o, bobby);
+                //o = sdfAdd(p, o, sdfPlane(p, -50));
+                return o;
+            }
+
+            fixed4 lightPoint(rayData ray)
+            {
+                float3 vSunDir = normalize(_SunPos);
+
+                if (ray.bMissed)
+                {
+                    return 0.1;
+                }
+
+                fixed4 col = 0;
+
+                col = ray.mat.col * lightSun(ray.vNorm, vSunDir, col(5, 2, 0.1));
+                col += ray.mat.col * lightSky(ray.vNorm, 1);
+                col *= lightAO(ray.vHit, ray.vNorm, 0.05);
+
+                col = pow(col, 0.7);
+                //col = lightFog(col, col(0.3, .17, 0.001), ray.dist, 0, 48);
+                return col;
+            }
+            ENDCG
+        }
+    }
+}

Assets/test/Demo3.shader.meta

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Assets/test/Demo4.shader

@@ -0,0 +1,79 @@
+Shader "Demo/Spinny thing"
+{
+    Properties
+    {
+        [Header(Lighting)]
+        _SunPos ("Sun position", Vector) = (8, 4, 2)
+
+        [Header(Raymarcher Properties)]
+        _MaxSteps ("Max steps", Int) = 256
+        _MaxDist ("Max distance", Float) = 256
+        _SurfDist ("Surface distance threshold", Range(0.00001, 0.05)) = 0.001
+
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+    {
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+        Cull Off
+        LOD 100
+
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+        {
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+            #pragma vertex vert
+            #pragma fragment frag
+
+            #define USE_DYNAMIC_QUALITY
+            // #define USE_WORLD_SPACE
+            #define USE_REFLECTIONS
+            #define MAX_REFLECTIONS 5
+            #define DISCARD_ON_MISS
+            //#define CONSTRAIN_TO_MESH
+            #include "RayMarchLib.cginc"
+
+            float3 _SunPos;
+
+            sdfData scene(float3 p)
+            {
+                sdfData o;
+                const material mGrass = mat(0.001, 0.1, 0.001, 0.7);
+                o = sdfPlane(p, 0, mGrass);
+                material mDirt = mat(0.1, 0.04, 0.01, 1);
+                o = sdfInter(p, o, sdfSphere(p, 9, mDirt), 0.5);
+
+                const material mMetal = mat(0.1, 0);
+
+                o = sdfAdd(p, o, sdfSphere(p - V_Y*2, 2, mMetal));
+                material m = mat(0.05, 0.1, 0.2, 1);
+                o = sdfAdd(p, o, sdfTorus(rotX(p, _Time* 40+UNITY_PI/2), 5, 0.5, m), 0.5);
+                o = sdfAdd(p, o, sdfTorus(rotZ(p, _Time* 40+UNITY_PI/2), 5, 0.5, m), 0.5);
+                o = sdfAdd(p, o, sdfTorus(rotX(p, _Time* 40), 5, 0.5, m), 0.5);
+                o = sdfAdd(p, o, sdfTorus(rotZ(p, _Time* 40), 5, 0.5, m), 0.5);
+
+                o = sdfAdd(p, o, sdfSphere(abs(rotY(p, -20 * _Time)) - float3(1.5,2,1.5), 1, mMetal), 0.2);
+                return o;
+            }
+
+            fixed4 lightPoint(rayData ray)
+            {
+                float3 vSunDir = normalize(_SunPos);
+
+                if (ray.bMissed)
+                {
+                    return sky(ray.vRayDir);
+                }
+
+                fixed4 col = 0;
+
+                col = ray.mat.col * lightSun(ray.vNorm, vSunDir);
+                col *= lightShadow(ray.vHit, vSunDir, 50);
+                col += ray.mat.col * lightSky(ray.vNorm, 1);
+                col *= lightAO(ray.vHit, ray.vNorm);
+
+                col = pow(col, 0.5);
+                return col;
+            }
+            ENDCG
+        }
+    }
+}

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Assets/test/TestProps.unity

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