1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
#ifndef COLORCONVERT
#define COLORCONVERT
// Convert the Rec2020 RGB colorspace to sRGB using:
// https://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-BT.2407-2017-PDF-E.pdf
// We can use the simple matrix defined there for a conversion between BT2020
// and sRGB. Conversion has to be done in linear color space.
vec4 convertRec2020ToSRGB(vec4 rgba)
{
const mat4 mat =
mat4(1.6605f, -0.5876f, -0.0728f, 0.0000f,
-0.1246f, 1.1329f, -0.0083f, 0.0000f,
-0.0182f, -0.1006f, 1.1187f, 0.0000f,
0.0000f, 0.0000f, 0.0000f, 1.0000f);
return rgba * mat;
}
#endif
|
