Hi, my problem is not the Shader, but the Performance is horrible. Like if i have a scene with Custom Trees and they’re Vertex animated for Wind.
is it usefull to put the animation parameter in a cginc file? or how can i get a good performance boost? like animate the parameter in c# or something..
thanks dan
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Shader:
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Shader "TreeWind/Wind_Main" {
Properties {
_MainTex ("Main Texture", 2D) = "white" {}
_BumpMap ("Normalmap", 2D) = "bump" {}
_Color ("Color", Color) = (1,1,1,1)
_AlphaCutoff("Alpha Cutoff",range(0,1)) = 0.03
_wind_dir ("Wind Direction", Vector) = (0.5,0.05,0.5,0)
_tree_sway("Tree Sway Offset", range(0,1)) = 0.2
_tree_sway_disp ("Tree Sway Displacement", range(0,1)) = 0.3
_tree_sway_speed ("Tree Sway Speed", range(0,10)) = 1
_wind_size ("Wind Wave Size", range(50,5)) = 15
}
SubShader {
Tags {
//"Queue"="AlphaTest"
"RenderType"="Opaque"
}
LOD 400
cull off
CGPROGRAM
#include "TerrainEngine.cginc"
#pragma target 5.0
#pragma surface surf Lambert vertex:vert addshadow fullforwardshadows
//Declared Variables
float4 _wind_dir;
float _wind_size;
float _tree_sway_speed;
float _tree_sway_disp;
float _tree_sway;
fixed _AlphaCutoff;
sampler2D _BumpMap;
sampler2D _MainTex;
fixed4 _Color;
//Structs
struct Input {
float2 uv_MainTex;
float2 uv_BumpMap;
float3 viewDir;
};
// Vertex Manipulation Function
void vert (inout appdata_full i) {
//Gets the vertex's World Position
float3 worldPos = mul (unity_ObjectToWorld, i.vertex).xyz;
//Tree Movement and Wiggle
i.vertex.x += (cos(_Time.z * _tree_sway_speed + (worldPos.x/_wind_size) + (sin(_Time.z * _tree_sway * _tree_sway_speed + (worldPos.x/_wind_size)) * _tree_sway) ) + 1)/2 * _tree_sway_disp * _wind_dir.x * (i.vertex.y / 10) +
cos(_Time.w * i.vertex.x * _tree_sway + (worldPos.x/_wind_size)) * _tree_sway * _wind_dir.x * i.color.b;
i.vertex.z += (cos(_Time.z * _tree_sway_speed + (worldPos.z/_wind_size) + (sin(_Time.z * _tree_sway * _tree_sway_speed + (worldPos.z/_wind_size)) * _tree_sway) ) + 1)/2 * _tree_sway_disp * _wind_dir.z * (i.vertex.y / 10) +
cos(_Time.w * i.vertex.z * _tree_sway + (worldPos.x/_wind_size)) * _tree_sway * _wind_dir.z * i.color.b;
i.vertex.y += cos(_Time.z * _tree_sway_speed + (worldPos.z/_wind_size)) * _tree_sway_disp * _wind_dir.y * (i.vertex.y / 10);
//Branches Movement
i.vertex.y += sin(_Time.w * _tree_sway_speed + _wind_dir.x + (worldPos.z/_wind_size)) * _tree_sway * i.color.r;
}
// Surface Shader
void surf (Input IN, inout SurfaceOutput o) {
fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
o.Albedo = c.rgb;
o.Alpha = c.a;
o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_MainTex));
clip(tex2D(_MainTex, IN.uv_MainTex).a * c.a - _AlphaCutoff);
}
ENDCG
}
Fallback "Legacy Shaders/Bumped Diffuse"
}
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