Blend
命令决定 GPU 如何将片段着色器的输出与渲染目标结合起来。
此命令的功能取决于混合操作,你可以使用 BlendOp 命令设置该操作。请注意,虽然混合本身在所有图形 API 和硬件上都得到支持,但某些混合操作的支持更为有限。
启用混合会禁用 GPU 上的部分优化(主要是隐藏表面移除/早期 Z),这可能导致 GPU 帧时间增加。
以下是用于最常见的混合类型语法的
Blend SrcAlpha OneMinusSrcAlpha // Traditional transparency
Blend One OneMinusSrcAlpha // Premultiplied transparency
Blend One One // Additive
Blend OneMinusDstColor One // Soft additive
Blend DstColor Zero // Multiplicative
Blend DstColor SrcColor // 2x multiplicative
Shader "Examples/CommandExample"
{
SubShader
{
// The rest of the code that defines the SubShader goes here.
Pass
{
// Enable regular alpha blending for this Pass
Blend SrcAlpha OneMinusSrcAlpha
// The rest of the code that defines the Pass goes here.
}
}
}
此示例代码展示了在 SubShader 块中使用此命令的语法。
Shader "Examples/CommandExample"
{
SubShader
{
// Enable regular alpha blending for this SubShader
Blend SrcAlpha OneMinusSrcAlpha
// The rest of the code that defines the SubShader goes here.
Pass
{
// The rest of the code that defines the Pass goes here.
}
}
}
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.