26 lines
634 B
GLSL
26 lines
634 B
GLSL
/* Copyright (c) 2018-2024, Sascha Willems
|
|
*
|
|
* SPDX-License-Identifier: MIT
|
|
*
|
|
*/
|
|
|
|
// From http://filmicworlds.com/blog/filmic-tonemapping-operators/
|
|
vec3 Uncharted2Tonemap(vec3 color)
|
|
{
|
|
float A = 0.15;
|
|
float B = 0.50;
|
|
float C = 0.10;
|
|
float D = 0.20;
|
|
float E = 0.02;
|
|
float F = 0.30;
|
|
float W = 11.2;
|
|
return ((color*(A*color+C*B)+D*E)/(color*(A*color+B)+D*F))-E/F;
|
|
}
|
|
|
|
// HDR颜色 + 曝光、gamma -> 屏幕颜色
|
|
vec4 tonemap(vec4 color)
|
|
{
|
|
vec3 outcol = Uncharted2Tonemap(color.rgb * pass.exposure);
|
|
outcol = outcol * (1.0f / Uncharted2Tonemap(vec3(11.2f)));
|
|
return vec4(pow(outcol, vec3(1.0f / pass.gamma)), color.a);
|
|
} |