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我可以爲此着色器的每個頂點實例製作不同的顏色嗎?我必須發送實例到o.output到碎片顏色嗎?這是Unity3d實現HLSL運行Graphics.DrawProcedural(MeshTopology.LineStrip);HLSL片段着色器對於每個頂點都有不同的顏色?
#pragma fragment frag
#include "UnityCG.cginc"
StructuredBuffer<float3> buf_Points;
StructuredBuffer<float3> buf_Positions;
struct ps_input {
float4 pos : SV_POSITION;
};
ps_input vert (uint id : SV_VertexID, uint inst : SV_InstanceID)
{
ps_input o;
float3 worldPos = buf_Points[id] + buf_Positions[inst];
o.pos = mul (UNITY_MATRIX_VP, float4(worldPos,1.0f));
return o;
}
float4 frag (ps_input i) : COLOR
{
return float4(1,0,0,1);
}
ENDCG