Lil level fixes, gradient skybox

yeah that

Assets/Scenes/CaseyTest.unity

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Assets/SkyboxPlus.meta

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+folderAsset: yes
+timeCreated: 1446300825
+licenseType: Pro
+DefaultImporter:
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+  assetBundleVariant: 

Assets/SkyboxPlus/Cubemap.shader

@@ -0,0 +1,83 @@
+Shader "SkyboxPlus/Cubemap"
+{
+    Properties
+    {
+        [NoScaleOffset] _Tex("-", Cube) = "grey"{}
+        _Tint("-", Color) = (.5, .5, .5)
+
+        _Euler("-", Vector) = (0, 0, 0)
+        [HideInInspector] _Rotation1("-", Vector) = (1, 0, 0)
+        [HideInInspector] _Rotation2("-", Vector) = (0, 1, 0)
+        [HideInInspector] _Rotation3("-", Vector) = (0, 0, 1)
+
+        [Gamma] _Exposure("-", Range(0, 8)) = 1
+        _Saturation("-", Range(0, 2)) = 1
+
+        [Toggle] _Lod("-", Float) = 0
+        _LodLevel("-", Range(0, 10)) = 0
+    }
+    CGINCLUDE
+
+    #pragma shader_feature _LOD_ON
+    #include "UnityCG.cginc"
+
+    samplerCUBE _Tex;
+    half4 _Tex_HDR;
+
+    half4 _Tint;
+    half _Exposure;
+    half _Saturation;
+    float _LodLevel;
+
+    float4 _Rotation1;
+    float4 _Rotation2;
+    float4 _Rotation3;
+
+    struct appdata_t {
+        float4 vertex : POSITION;
+    };
+
+    struct v2f {
+        float4 vertex : SV_POSITION;
+        float3 texcoord : TEXCOORD0;
+    };
+
+    v2f vert(appdata_t v)
+    {
+        v2f o;
+        float3x3 m = float3x3(_Rotation1.xyz, _Rotation2.xyz, _Rotation3.xyz);
+        float4 vp = float4(mul(m, v.vertex.xyz), v.vertex.w);
+        o.vertex = UnityObjectToClipPos(vp);
+        o.texcoord = v.vertex.xyz;
+        return o;
+    }
+
+    fixed4 frag(v2f i) : SV_Target
+    {
+#ifdef _LOD_ON
+        half4 tex = texCUBElod(_Tex, float4(i.texcoord, _LodLevel));
+#else
+        half4 tex = texCUBE(_Tex, i.texcoord);
+#endif
+        half3 c = DecodeHDR(tex, _Tex_HDR);
+        c *= _Tint.rgb * unity_ColorSpaceDouble.rgb * _Exposure;
+        c = lerp((half3)Luminance(c), c, _Saturation);
+        return half4(c, 1);
+    }
+
+    ENDCG
+    SubShader
+    {
+        Tags { "Queue"="Background" "RenderType"="Background" "PreviewType"="Skybox" }
+        Cull Off ZWrite Off
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            ENDCG
+        }
+    }
+    Fallback Off
+    CustomEditor "SkyboxPlus.CubemapMaterialEditor"
+}

Assets/SkyboxPlus/Cubemap.shader.meta

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+fileFormatVersion: 2
+guid: f2a20f3ce17b84e938179dc858a385eb
+timeCreated: 1446300852
+licenseType: Pro
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+  userData: 
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Assets/SkyboxPlus/Editor.meta

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Assets/SkyboxPlus/Editor/CubemapMaterialEditor.cs

@@ -0,0 +1,79 @@
+using UnityEngine;
+using UnityEditor;
+
+namespace SkyboxPlus
+{
+    public class CubemapMaterialEditor : ShaderGUI
+    {
+        MaterialProperty _cubemap;
+        MaterialProperty _tint;
+        MaterialProperty _euler;
+        MaterialProperty _exposure;
+        MaterialProperty _saturation;
+        MaterialProperty _lod;
+        MaterialProperty _lodLevel;
+
+        static GUIContent _textCubemap = new GUIContent("Cubemap");
+
+        bool _initial = true;
+
+        void FindProperties(MaterialProperty[] props)
+        {
+            _cubemap = FindProperty("_Tex", props);
+            _tint = FindProperty("_Tint", props);
+            _euler = FindProperty("_Euler", props);
+            _exposure = FindProperty("_Exposure", props);
+            _saturation = FindProperty("_Saturation", props);
+            _lod = FindProperty("_Lod", props);
+            _lodLevel = FindProperty("_LodLevel", props);
+        }
+
+        public override void OnGUI(MaterialEditor materialEditor, MaterialProperty[] properties)
+        {
+            FindProperties(properties);
+            if (ShaderPropertiesGUI(materialEditor) || _initial)
+                foreach (Material m in materialEditor.targets)
+                    SetMatrix(m);
+            _initial = false;
+        }
+
+        bool ShaderPropertiesGUI(MaterialEditor materialEditor)
+        {
+            EditorGUI.BeginChangeCheck();
+
+            materialEditor.TexturePropertySingleLine(_textCubemap, _cubemap, _tint);
+            Vector3Property(materialEditor, _euler, "Rotation");
+            materialEditor.ShaderProperty(_exposure, "Exposure");
+            materialEditor.ShaderProperty(_saturation, "Saturation");
+
+            materialEditor.ShaderProperty(_lod, "Specify MIP Level");
+            if (_lod.hasMixedValue || _lod.floatValue > 0)
+            {
+                EditorGUI.indentLevel++;
+                materialEditor.ShaderProperty(_lodLevel, "Level");
+                EditorGUI.indentLevel--;
+            }
+
+            return EditorGUI.EndChangeCheck();
+        }
+
+        static void SetMatrix(Material material)
+        {
+            var r = material.GetVector("_Euler");
+            var q = Quaternion.Euler(r.x, r.y, r.z);
+            var m = Matrix4x4.TRS(Vector3.zero, q, Vector3.one);
+            material.SetVector("_Rotation1", m.GetRow(0));
+            material.SetVector("_Rotation2", m.GetRow(1));
+            material.SetVector("_Rotation3", m.GetRow(2));
+        }
+
+        void Vector3Property(MaterialEditor materialEditor, MaterialProperty prop, string label)
+        {
+            EditorGUI.BeginChangeCheck();
+            EditorGUI.showMixedValue = prop.hasMixedValue;
+            var newValue = EditorGUILayout.Vector3Field(label, prop.vectorValue);
+            EditorGUI.showMixedValue = false;
+            if (EditorGUI.EndChangeCheck()) prop.vectorValue = newValue;
+        }
+    }
+}

Assets/SkyboxPlus/Editor/CubemapMaterialEditor.cs.meta

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+timeCreated: 1446300856
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+  defaultReferences: []
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Assets/SkyboxPlus/Editor/GradientsMaterialEditor.cs

@@ -0,0 +1,130 @@
+using UnityEngine;
+using UnityEditor;
+
+namespace SkyboxPlus
+{
+    public class GradientsMaterialEditor : ShaderGUI
+    {
+        MaterialProperty _baseColor;
+        MaterialProperty _exposure;
+
+        MaterialProperty _switch2;
+        MaterialProperty _switch3;
+        MaterialProperty _switch4;
+
+        MaterialProperty _direction1;
+        MaterialProperty _direction2;
+        MaterialProperty _direction3;
+        MaterialProperty _direction4;
+
+        MaterialProperty _color1;
+        MaterialProperty _color2;
+        MaterialProperty _color3;
+        MaterialProperty _color4;
+
+        MaterialProperty _exponent1;
+        MaterialProperty _exponent2;
+        MaterialProperty _exponent3;
+        MaterialProperty _exponent4;
+
+        bool _initial = true;
+
+        void FindProperties(MaterialProperty[] props)
+        {
+            _baseColor = FindProperty("_BaseColor", props);
+            _exposure = FindProperty("_Exposure", props);
+
+            _switch2 = FindProperty("_Switch2", props);
+            _switch3 = FindProperty("_Switch3", props);
+            _switch4 = FindProperty("_Switch4", props);
+
+            _direction1 = FindProperty("_Direction1", props);
+            _direction2 = FindProperty("_Direction2", props);
+            _direction3 = FindProperty("_Direction3", props);
+            _direction4 = FindProperty("_Direction4", props);
+
+            _color1 = FindProperty("_Color1", props);
+            _color2 = FindProperty("_Color2", props);
+            _color3 = FindProperty("_Color3", props);
+            _color4 = FindProperty("_Color4", props);
+
+            _exponent1 = FindProperty("_Exponent1", props);
+            _exponent2 = FindProperty("_Exponent2", props);
+            _exponent3 = FindProperty("_Exponent3", props);
+            _exponent4 = FindProperty("_Exponent4", props);
+        }
+
+        public override void OnGUI(MaterialEditor materialEditor, MaterialProperty[] properties)
+        {
+            FindProperties(properties);
+            if (ShaderPropertiesGUI(materialEditor) || _initial)
+                foreach (Material m in materialEditor.targets)
+                    UpdateMaterial(m);
+            _initial = false;
+        }
+
+        bool ShaderPropertiesGUI(MaterialEditor materialEditor)
+        {
+            EditorGUI.BeginChangeCheck();
+
+            materialEditor.ShaderProperty(_baseColor, "Base Color");
+            materialEditor.ShaderProperty(_exposure, "Exposure");
+
+            EditorGUILayout.Space();
+            EditorGUILayout.LabelField("Gradient 1");
+            Vector3Property(materialEditor, _direction1, "Direction");
+            materialEditor.ShaderProperty(_color1, "Color");
+            materialEditor.ShaderProperty(_exponent1, "Exponent");
+            EditorGUILayout.Space();
+
+            materialEditor.ShaderProperty(_switch2, "Gradient 2");
+            if (_switch2.floatValue > 0)
+            {
+                Vector3Property(materialEditor, _direction2, "Direction");
+                materialEditor.ShaderProperty(_color2, "Color");
+                materialEditor.ShaderProperty(_exponent2, "Exponent");
+                EditorGUILayout.Space();
+            }
+
+            materialEditor.ShaderProperty(_switch3, "Gradient 3");
+            if (_switch3.floatValue > 0)
+            {
+                Vector3Property(materialEditor, _direction3, "Direction");
+                materialEditor.ShaderProperty(_color3, "Color");
+                materialEditor.ShaderProperty(_exponent3, "Exponent");
+                EditorGUILayout.Space();
+            }
+
+            materialEditor.ShaderProperty(_switch4, "Gradient 4");
+            if (_switch4.floatValue > 0)
+            {
+                Vector3Property(materialEditor, _direction4, "Direction");
+                materialEditor.ShaderProperty(_color4, "Color");
+                materialEditor.ShaderProperty(_exponent4, "Exponent");
+            }
+
+            return EditorGUI.EndChangeCheck();
+        }
+
+        void Vector3Property(MaterialEditor materialEditor, MaterialProperty prop, string label)
+        {
+            EditorGUI.BeginChangeCheck();
+            EditorGUI.showMixedValue = prop.hasMixedValue;
+            var newValue = EditorGUILayout.Vector3Field(label, prop.vectorValue);
+            EditorGUI.showMixedValue = false;
+            if (EditorGUI.EndChangeCheck()) prop.vectorValue = newValue;
+        }
+
+        void UpdateMaterial(Material m)
+        {
+            Vector3 d1 = m.GetVector("_Direction1");
+            Vector3 d2 = m.GetVector("_Direction2");
+            Vector3 d3 = m.GetVector("_Direction3");
+            Vector3 d4 = m.GetVector("_Direction4");
+            m.SetVector("_NormalizedVector1", d1.normalized);
+            m.SetVector("_NormalizedVector2", d2.normalized);
+            m.SetVector("_NormalizedVector3", d3.normalized);
+            m.SetVector("_NormalizedVector4", d4.normalized);
+        }
+    }
+}

Assets/SkyboxPlus/Editor/GradientsMaterialEditor.cs.meta

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+guid: 9d3208f7d575d46388446348b69a1903
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Assets/SkyboxPlus/Gradients.shader

@@ -0,0 +1,109 @@
+Shader "SkyboxPlus/Gradients"
+{
+    Properties
+    {
+        [HDR] _BaseColor("Base Color", Color) = (0.1, 0.1, 0.1)
+        [Gamma] _Exposure("Exposure", Range(0, 8)) = 1
+
+        [Toggle] _Switch2("Gradient 2", Float) = 1
+        [Toggle] _Switch3("Gradient 3", Float) = 1
+        [Toggle] _Switch4("Gradient 4", Float) = 1
+
+        _Direction1("Direction 1", Vector) = (0, 1, 0)
+        _Direction2("Direction 2", Vector) = (0.5, 1, 0)
+        _Direction3("Direction 3", Vector) = (-0.3, -1, -0.2)
+        _Direction4("Direction 4", Vector) = (0, 1, 0)
+
+        [HDR] _Color1("Color 1", Color) = (0.16, 0.18, 0.19)
+        [HDR] _Color2("Color 2", Color) = (0.26, 0.28, 0.21)
+        [HDR] _Color3("Color 3", Color) = (0.15, 0.15, 0.12)
+        [HDR] _Color4("Color 4", Color) = (1.00, 0.99, 0.95)
+
+        _Exponent1("Exponent 1", Range(1, 20)) = 1
+        _Exponent2("Exponent 2", Range(1, 20)) = 1
+        _Exponent3("Exponent 3", Range(1, 20)) = 1
+        _Exponent4("Exponent 4", Range(1, 20)) = 20
+
+        [HideInInspector] _NormalizedVector1("-", Vector) = (0, 1, 0)
+        [HideInInspector] _NormalizedVector2("-", Vector) = (0, 1, 0)
+        [HideInInspector] _NormalizedVector3("-", Vector) = (0, 1, 0)
+        [HideInInspector] _NormalizedVector4("-", Vector) = (0, 1, 0)
+    }
+
+    CGINCLUDE
+
+    #pragma shader_feature _SWITCH2_ON
+    #pragma shader_feature _SWITCH3_ON
+    #pragma shader_feature _SWITCH4_ON
+
+    #include "UnityCG.cginc"
+
+    half3 _BaseColor;
+    half _Exposure;
+
+    half3 _NormalizedVector1;
+    half3 _NormalizedVector2;
+    half3 _NormalizedVector3;
+    half3 _NormalizedVector4;
+
+    half3 _Color1;
+    half3 _Color2;
+    half3 _Color3;
+    half3 _Color4;
+
+    half _Exponent1;
+    half _Exponent2;
+    half _Exponent3;
+    half _Exponent4;
+
+    struct appdata_t {
+        float4 vertex : POSITION;
+    };
+
+    struct v2f {
+        float4 vertex : SV_POSITION;
+        float3 texcoord : TEXCOORD0;
+    };
+
+    v2f vert(appdata_t v)
+    {
+        v2f o;
+        o.vertex = UnityObjectToClipPos(v.vertex);
+        o.texcoord = v.vertex.xyz;
+        return o;
+    }
+
+    half4 frag(v2f i) : SV_Target
+    {
+        half3 d = normalize(i.texcoord.xyz);
+        half3 c = _BaseColor;
+        c += _Color1 * pow((dot(d, _NormalizedVector1) + 1) * 0.5, _Exponent1);
+        #ifdef _SWITCH2_ON
+        c += _Color2 * pow((dot(d, _NormalizedVector2) + 1) * 0.5, _Exponent2);
+        #endif
+        #ifdef _SWITCH3_ON
+        c += _Color3 * pow((dot(d, _NormalizedVector3) + 1) * 0.5, _Exponent3);
+        #endif
+        #ifdef _SWITCH4_ON
+        c += _Color4 * pow((dot(d, _NormalizedVector4) + 1) * 0.5, _Exponent4);
+        #endif
+        return half4(c * _Exposure, 1);
+    }
+
+    ENDCG
+
+    SubShader
+    {
+        Tags { "Queue"="Background" "RenderType"="Background" "PreviewType"="Skybox" }
+        Cull Off ZWrite Off
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            ENDCG
+        }
+    }
+    Fallback Off
+    CustomEditor "SkyboxPlus.GradientsMaterialEditor"
+}

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Assets/SkyboxPlus/Hemisphere.shader

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+Shader "SkyboxPlus/Hemisphere"
+{
+    Properties
+    {
+        [HDR] _TopColor("North Pole", Color) = (0.35, 0.37, 0.42)
+        [HDR] _MiddleColor("Equator", Color) = (0.15, 0.15, 0.15)
+        [HDR] _BottomColor("South Pole", Color) = (0.12, 0.13, 0.15)
+        [Gamma] _Exposure("Exposure", Range(0, 8)) = 1
+    }
+    CGINCLUDE
+
+    #include "UnityCG.cginc"
+
+    half3 _TopColor;
+    half3 _MiddleColor;
+    half3 _BottomColor;
+    half _Exposure;
+
+    struct appdata_t {
+        float4 vertex : POSITION;
+    };
+
+    struct v2f {
+        float4 vertex : SV_POSITION;
+        float3 texcoord : TEXCOORD0;
+    };
+
+    v2f vert(appdata_t v)
+    {
+        v2f o;
+        o.vertex = UnityObjectToClipPos(v.vertex);
+        o.texcoord = v.vertex.xyz;
+        return o;
+    }
+
+    half4 frag(v2f i) : SV_Target
+    {
+        half t1 = max(+i.texcoord.y, 0);
+        half t2 = max(-i.texcoord.y, 0);
+        half3 c = lerp(lerp(_MiddleColor, _TopColor, t1), _BottomColor, t2);
+        return half4(c * _Exposure, 1);
+    }
+
+    ENDCG
+    SubShader
+    {
+        Tags { "Queue"="Background" "RenderType"="Background" "PreviewType"="Skybox" }
+        Cull Off ZWrite Off
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            ENDCG
+        }
+    }
+    Fallback Off
+}

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