[程式] SHADWER語法問題
最近看到一個shader語法
只是之前都沒有看過，所以想上來求助一下
因為他寫的語法我不知道是GLSL、HLSL和CG哪個
float a(float val)
{
float ret;
if(val <= 0.0f)
ret = 0;
....
return ret;
}
請問上面a函數做的事情是甚麼意思?
因為在寫的時候，沒有用過if裡面的那種判斷
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