diff options
| author | Filippo Tarpini <filippotarpini@hotmail.it> | 2023-09-09 18:12:47 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-09-09 18:12:47 +0300 |
| commit | 84c8eb5a015074541caef02590f7c21bcf425bcf (patch) | |
| tree | 03e69ed5fb5477b6326da33c4fba526515324658 | |
| parent | 5e0cf795e3dbda66e4b53b2264cc163c986cb7b0 (diff) | |
Make AutoHDR work with color luminance instead of average
This gives more consistent results.
My main ReShade has also been updated with the same change: https://github.com/Filoppi/PumboAutoHDR
| -rw-r--r-- | Data/Sys/Shaders/AutoHDR.glsl | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Data/Sys/Shaders/AutoHDR.glsl b/Data/Sys/Shaders/AutoHDR.glsl index 6226d70d7c..b806d65838 100644 --- a/Data/Sys/Shaders/AutoHDR.glsl +++ b/Data/Sys/Shaders/AutoHDR.glsl @@ -30,6 +30,11 @@ DefaultValue = 2.5 [/configuration] */ +float luminance(float3 color) +{ + return dot(color, float3(0.2126f, 0.7152f, 0.0722f)); +} + void main() { float4 color = Sample(); @@ -46,8 +51,8 @@ void main() // Restore the original SDR (0-1) brightness (we might or might not restore it later) color.rgb /= hdr_paper_white; - // Find the color average - float sdr_ratio = (color.r + color.g + color.b) / 3.0; + // Find the color luminance (it works better than average) + float sdr_ratio = luminance(color.rgb); const float auto_hdr_max_white = max(HDR_DISPLAY_MAX_NITS / (hdr_paper_white_nits / hdr_sdr_white_nits), hdr_sdr_white_nits) / hdr_sdr_white_nits; if (sdr_ratio > AUTO_HDR_SHOULDER_START_ALPHA && AUTO_HDR_SHOULDER_START_ALPHA < 1.0) @@ -61,4 +66,4 @@ void main() color.rgb *= hdr_paper_white; SetOutput(color); -}
\ No newline at end of file +} |