1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
#ifndef ALLOW_INCLUDES
#define ALLOW_INCLUDES
#extension GL_ARB_shading_language_include : enable
#endif
#include "defines.h"
#if USE_CM
#include "cm_helpers.glsl"
#endif
#include "gain.glsl"
vec4 blurPrepare(vec4 pixColor, float contrast, float brightness
#if USE_CM
,
int sourceTF, int targetTF, mat3 convertMatrix, vec2 srcTFRange, vec2 dstTFRange, float srcRefLuminance, float sdrBrightnessMultiplier
#endif
) {
#if USE_CM
if (sourceTF == CM_TRANSFER_FUNCTION_ST2084_PQ) {
pixColor.rgb /= sdrBrightnessMultiplier;
}
pixColor.rgb = convertMatrix * toLinearRGB(pixColor.rgb, sourceTF);
pixColor = toNit(pixColor, vec2(srcTFRange[0], srcRefLuminance));
pixColor = fromLinearNit(pixColor, targetTF, dstTFRange);
#endif
// contrast
if (contrast != 1.0)
pixColor.rgb = gain(pixColor.rgb, contrast);
// brightness
pixColor.rgb *= max(1.0, brightness);
return pixColor;
}
|
