diff options
Diffstat (limited to 'video/out/gl_video_shaders.glsl')
| -rw-r--r-- | video/out/gl_video_shaders.glsl | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/video/out/gl_video_shaders.glsl b/video/out/gl_video_shaders.glsl index 2f5940c26f..4037e42449 100644 --- a/video/out/gl_video_shaders.glsl +++ b/video/out/gl_video_shaders.glsl @@ -179,6 +179,10 @@ uniform mat2 dither_trafo; uniform vec3 inv_gamma; uniform float input_gamma; uniform float conv_gamma; +uniform float sig_center; +uniform float sig_slope; +uniform float sig_scale; +uniform float sig_offset; uniform float dither_quantization; uniform float dither_center; uniform float filter_param1_l; @@ -425,7 +429,14 @@ void main() { // The BT.2020 specification says Yc = 0.2627*R + 0.6780*G + 0.0593*B color.g = (color.g - 0.2627*color.r - 0.0593*color.b)/0.6780; #endif +#ifdef USE_SIGMOID + color = sig_center - log(1.0/(color * sig_scale + sig_offset) - 1.0)/sig_slope; +#endif // Image upscaling happens roughly here +#ifdef USE_SIGMOID_INV + // Inverse of USE_SIGMOID + color = (1.0/(1.0 + exp(sig_slope * (sig_center - color))) - sig_offset) / sig_scale; +#endif #ifdef USE_GAMMA_POW // User-defined gamma correction factor (via the gamma sub-option) color = pow(color, inv_gamma); |