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149 行
2.8 KiB
149 行
2.8 KiB
Shader "Debug/Line3DShaderProc" {
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Properties
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{
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}
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SubShader
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{
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Pass
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{
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Tags{ "Queue" = "Transparent" "RenderType" = "Transparent" }
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ZWrite on
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ZTest Less
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Cull off
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//Blend One One
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Blend SrcAlpha OneMinusSrcAlpha
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma multi_compile_fwdbase nolightmap nodirlightmap nodynlightmap novertexlight
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#pragma target 4.5
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#include "UnityCG.cginc"
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float4 scales; // scale (x,y)
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struct instanceData
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{
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float4 start;
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float4 end;
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float4 color;
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};
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StructuredBuffer<instanceData> positionBuffer;
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struct v2f
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{
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float4 pos : SV_POSITION;
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float4 color : TEXCOORD3;
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};
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v2f vert(uint vid : SV_VertexID, uint instanceID : SV_InstanceID)
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{
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// We just draw a bunch of vertices but want to pretend to
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// be drawing two-triangle quads. Build inst/vert id for this:
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int instID = vid / 6.0;
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int vertID = vid - instID * 6;
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// Generates (0,0) (1,0) (1,1) (1,1) (0,1) (0,0) from vertID
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float4 v_pos = saturate(float4(2 - abs(vertID - 2), 2 - abs(vertID - 3), 0, 0));
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// Center around y
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v_pos.x -= 0.5;
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// Read instance data
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float4 start = positionBuffer[instID].start;
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float4 end = positionBuffer[instID].end;
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float4 color = positionBuffer[instID].color;
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float4 dir = end - start;
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float3 startDir = start - _WorldSpaceCameraPos;
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float3 endDir = end - _WorldSpaceCameraPos;
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float3 offset = v_pos.y*normalize(cross(dir, endDir))*length(endDir)*0.5 + (1 - v_pos.y)*normalize(cross(dir, startDir))*length(startDir)*0.5;
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float pointScale = 0.01f;
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float4 p = (start + dir*v_pos.y) + float4(offset,0) * v_pos.x * pointScale;
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float4 clipPos = UnityObjectToClipPos(p);
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v2f o;
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o.pos = clipPos;
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o.color = color;
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return o;
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}
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fixed4 frag(v2f i) : SV_Target
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{
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return float4(i.color.rgb,1);
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}
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ENDCG
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}
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}
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}
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//Shader "Unlit/NewUnlitShader"
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//{
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// Properties
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// {
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// _MainTex ("Texture", 2D) = "white" {}
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// }
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// SubShader
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// {
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// Tags { "RenderType"="Opaque" }
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// LOD 100
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//
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// Pass
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// {
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// CGPROGRAM
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// #pragma vertex vert
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// #pragma fragment frag
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// // make fog work
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// #pragma multi_compile_fog
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//
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// #include "UnityCG.cginc"
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//
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// struct appdata
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// {
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// float4 vertex : POSITION;
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// float2 uv : TEXCOORD0;
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// };
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//
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// struct v2f
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// {
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// float2 uv : TEXCOORD0;
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// UNITY_FOG_COORDS(1)
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// float4 vertex : SV_POSITION;
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// };
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//
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// sampler2D _MainTex;
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// float4 _MainTex_ST;
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//
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// v2f vert (appdata v)
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// {
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// v2f o;
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// o.vertex = UnityObjectToClipPos(v.vertex);
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// o.uv = TRANSFORM_TEX(v.uv, _MainTex);
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// UNITY_TRANSFER_FOG(o,o.vertex);
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// return o;
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// }
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//
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// fixed4 frag (v2f i) : SV_Target
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// {
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// // sample the texture
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// fixed4 col = tex2D(_MainTex, i.uv);
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// // apply fog
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// UNITY_APPLY_FOG(i.fogCoord, col);
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// return col;
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// }
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// ENDCG
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// }
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// }
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//}
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