---
title: "Color Blend State"
date: 2021-01-27T14:11:42-08:00
weight: 1
---

Color blend state is comprised of three fields - a logical operation, whether that logical operation is enabled, and some blending constants.

`LogicOp` lets you do a bitwise combination of the original and new color. You can read about that in more detail [over here](https://www.khronos.org/registry/vulkan/specs/1.2/html/chap28.html#framebuffer-logicop).

`BlendConstants` are used by the blend factors to produce result colors. You can read about that [here](https://www.khronos.org/registry/vulkan/specs/1.2/html/chap28.html#framebuffer-blendconstants).

Let's put it all together:

```cs
var myBlendConstants = new BlendConstants
{
    R = 1f,
    G = 1f,
    B = 1f,
    A = 1f
};

var myColorBlendState = new ColorBlendState
{
    LogicOpEnable = true,
	LogicOp = LogicOp.And,
    BlendConstants = myBlendConstants
};
```

Further blending state control is provided in GraphicsPipelineAttachmentInfo, which will be discussed later.