URP

Use this drop-down to determine how URP calculates the color of each pixel of the transparent Material by blending the Material with the background pixels.Alpha uses the Material’s alpha value to change how transparent an object is. 0 is fully transparent. 1 appears fully opaque, but the Material is still rendered during the Transparent render pass. This is useful for visuals that you want to be fully visible but to also fade over time, like clouds.Premultiply applies a similar effect to the Material as Alpha, but preserves reflections and highlights, even when your surface is transparent. This means that only the reflected light is visible. For example, imagine transparent glass.Additive adds an extra layer to the Material, on top of another surface. This is good for holograms. Multiply multiplies the color of the Material with the color behind the surface. This creates a darker effect, like when you look through colored glass.

使用这个下拉列表来确定URP如何通过混合材质和背景像素来计算透明材质的每个像素的颜色。

Alpha使用材质的Alpha值来改变物体的透明度。0是完全透明的。1显示完全不透明，但是在透明渲染过程中材质仍然被渲染。这对于那些你想要完全可见但又想要随着时间逐渐消失的图像，比如云，是很有用的。

Premultiply 在材质上应用了类似Alpha的效果，但是保留了反射和高光，即使你的表面是透明的。这意味着只有反射光是可见的。例如，想象一下透明的玻璃。

在材料的另一个表面上增加一个额外的层。这对全息图很有用。

Multiply 将材料的颜色与表面后面的颜色进行叠加。这会产生一种更暗的效果，就像你透过彩色玻璃看东西一样。