項(xiàng)目要求一個文本自發(fā)光的效果，網(wǎng)上搜索了一下法線并沒有找到有關(guān)代碼，于是只能自己動手寫了一個，先上效果吧

這里其實(shí)只用到了簡單的模糊效果，本來想用的高斯模糊，但是發(fā)現(xiàn)效果還不如簡單的模糊效果。下面是片元著色器的代碼

float getTransparent(sampler2D MainTex, float2 ?uv)

{

fixed4 result = tex2D(_MainTex, uv);

return result.a;

}

fixed4 frag (v2f i) : COLOR

{

fixed4 lightCol = fixed4(0.0f, 0.612f, 1.0f, 1.0f);

fixed4 result = tex2D(_MainTex,i.uv);

float accAlpha = 0;

float offsetValue = _OffsetValue;

int lev = 7;

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, -7));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, -6));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, -5));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, -4));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, -3));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, -2));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, -1));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 0));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 1));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 2));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 3));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 4));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 5));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 6));

++lie;

}

for(int lie = 0 - lev; lie <= lev;)

{

accAlpha = accAlpha + getTransparent(_MainTex, i.uv + offsetValue*float2(lie, 7));

++lie;

}

fixed4 col = 1*result.a + lightCol.rgba*(1.0f - result.a);

col.a = result.a + accAlpha/(float)((2*lev+1)*(2*lev+1));

col.a = col.a*(col.a + 1);

return col;

}

unity的shader貌似不能嵌套for循環(huán)，就只能如此了，例子這里是取了每點(diǎn)周圍五個像素作為源色彩，求得均值作為當(dāng)前像素色彩。

總結(jié)

以上是生活随笔為你收集整理的unity 发光字体_unity文本自发光效果的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。