[Unity Shaders] 半透明材質的混合效果
阿新 • • 發佈：2019-02-19
// Test_Effect.shader
// This shader is used for overlay effects with transparent blending textures.
// Last edit: 2017-08-29
Shader "Custom/Test_Effect" {
Properties {
_MainTex ("RGBA Texture Image", 2D) = "white" {} // note "RGBA Texture Image" instead of "Base (RGB)" or "Base Texture"
_BlendTex ("Blend Texture", 2D) = "white" {}
}
SubShader {
Pass {
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
uniform sampler2D _MainTex;
uniform sampler2D _BlendTex;
struct vertexInput {
float4 vertex : POSITION;
float4 texcoord : TEXCOORD0;
};
struct vertexOutput {
float4 pos : SV_POSITION;
float4 tex : TEXCOORD0;
};
vertexOutput vert(vertexInput input) {
vertexOutput output;
output.tex = input.texcoord;
output.pos = UnityObjectToClipPos(input.vertex);
return output;
}
// the blending function for overlay effects
fixed OverlayBlendMode(fixed basePixel, fixed blendPixel) {
if(basePixel < 0.5) {
return (2.0 * basePixel * blendPixel);
} else {
return (1.0 - 2.0 * (1.0 - basePixel) * (1.0 - blendPixel));
}
}
// core function HERE