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pinkwerkspinkwerks
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Initial commit of shader that draws a ring around a location in space
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‎Assets/HoloToolkit/SpatialMapping/Materials/SpatialMappingTap.mat‎

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%YAML 1.1
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%TAG !u! tag:unity3d.com,2011:
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--- !u!21 &2100000
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Material:
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serializedVersion: 6
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m_ObjectHideFlags: 0
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m_PrefabParentObject: {fileID: 0}
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m_Name: SpatialMappingTap
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m_ShaderKeywords: _EMISSION _USEWIREFRAME_ON
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‎Assets/HoloToolkit/SpatialMapping/Materials/SpatialMappingTap.mat.meta‎

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Some generated files are not rendered by default. Learn more about customizing how changed files appear on GitHub.

‎Assets/HoloToolkit/SpatialMapping/Shaders/SpatialMappingTap.shader‎

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Shader "Spatial Mapping/Spatial Mappping Tap"
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{
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Properties
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{
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// Main knobs
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_Center ("Center", Vector) = (0, 0, 0, -1) // world space position
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_Radius ("Radius", Range(0, 10)) = 1 // grows the pulse
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// Pulse knobs
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_PulseColor ("Pulse Color", Color) = (.145, .447, .922)
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_PulseWidth ("Pulse Width", Float) = 1
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// Wireframe knobs
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[MaterialToggle] _UseWireframe ("Use Wireframe", Int) = 1
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_WireframeColor ("Wireframe Color", Color) = (.5, .5, .5)
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_WireframeFill ("Wireframe Fill", Range(0, 1)) = .1
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}
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SubShader
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{
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Tags { "RenderType" = "Opaque" }
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Pass
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{
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Offset 50, 100
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CGPROGRAM
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#pragma vertex vert
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#pragma geometry geom
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#pragma fragment frag
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#include "UnityCG.cginc"
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half _Radius;
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half3 _Center;
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half3 _PulseColor;
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half _PulseWidth;
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half3 _WireframeColor;
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half _WireframeFill;
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int _UseWireframe;
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// http://www.iquilezles.org/www/articles/functions/functions.htm
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half cubicPulse(half c, half w, half x)
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{
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x = abs(x - c);
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if ( x > w )
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return 0;
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x /= w;
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return 1 - x * x * (3 - 2 * x);
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}
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struct v2g
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{
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half4 viewPos : SV_POSITION;
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half pulse : COLOR;
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};
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v2g vert(appdata_base v)
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{
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v2g o;
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o.viewPos = mul(UNITY_MATRIX_MVP, v.vertex);
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float4 worldPos = mul(unity_ObjectToWorld, v.vertex);
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half distToCenter = distance(_Center, worldPos.xyz);
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half pulse = cubicPulse(_Radius, _PulseWidth, distToCenter);
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o.pulse = pulse;
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return o;
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}
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struct g2f
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{
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float4 viewPos : SV_POSITION;
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half3 bary : COLOR;
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half pulse : COLOR1;
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};
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[maxvertexcount(3)]
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void geom(triangle v2g i[3], inout TriangleStream<g2f> triStream)
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{
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// For wireframe
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half3 barys[3] = {
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half3(1, 0, 0),
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half3(0, 1, 0),
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half3(0, 0, 1)
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};
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g2f o;
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[unroll]
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for (uint idx = 0; idx < 3; ++idx)
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{
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o.viewPos = i[idx].viewPos;
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o.bary = barys[idx];
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o.pulse = i[idx].pulse;
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triStream.Append(o);
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}
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}
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half4 frag(g2f i) : COLOR
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{
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half3 result = i.pulse * _PulseColor;
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if (!_UseWireframe)
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return half4(result, 1);
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half triBary = min( min(i.bary.x, i.bary.y), i.bary.z) * 3;
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half fwt = fwidth(triBary);
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half w = smoothstep(fwt, 0, triBary - _WireframeFill);
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result += w * _WireframeColor * i.pulse;
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return half4(result, 1);
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}
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ENDCG
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}
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}
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FallBack "Diffuse"
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}
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‎Assets/HoloToolkit/SpatialMapping/Shaders/SpatialMappingTap.shader.meta‎

Lines changed: 9 additions & 0 deletions
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