mirror of
https://github.com/patriciogonzalezvivo/thebookofshaders
synced 2024-11-08 01:10:27 +00:00
33 lines
942 B
Markdown
33 lines
942 B
Markdown
## Mix
|
||
Constrain a value to lie between two further values
|
||
|
||
### Declaration
|
||
```glsl
|
||
float mix(float x, float y, float a)
|
||
vec2 mix(vec2 x, vec2 y, vec2 a)
|
||
vec3 mix(vec3 x, vec3 y, vec3 a)
|
||
vec4 mix(vec4 x, vec4 y, vec4 a)
|
||
|
||
vec2 mix(vec2 x, vec2 y, float a)
|
||
vec3 mix(vec3 x, vec3 y, float a)
|
||
vec4 mix(vec4 x, vec4 y, float a)
|
||
```
|
||
|
||
### Parameters
|
||
```x``` Specify the start of the range in which to interpolate.
|
||
|
||
```y``` Specify the end of the range in which to interpolate.
|
||
|
||
```a``` Specify the value to use to interpolate between x and y.
|
||
|
||
### Description
|
||
```mix()``` performs a linear interpolation between ```x``` and ```y``` using ```a``` to weight between them. The return value is computed as ```x×(1−a)+y×a```.
|
||
|
||
<div class="codeAndCanvas" data="../06/mix.frag"></div>
|
||
|
||
<div class="codeAndCanvas" data="../06/gradient.frag"></div>
|
||
|
||
### See Also
|
||
|
||
[min](index.html#min.md), [max](index.html#max.md), [Chapter 06: Color](../06/)
|