mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-12-28 02:34:32 +01:00
64 lines
1.6 KiB
GLSL
64 lines
1.6 KiB
GLSL
// Based on https://github.com/Filoppi/PumboAutoHDR
|
|
|
|
/*
|
|
[configuration]
|
|
|
|
[OptionRangeFloat]
|
|
GUIName = HDR Display Max Nits
|
|
OptionName = HDR_DISPLAY_MAX_NITS
|
|
MinValue = 80
|
|
MaxValue = 2000
|
|
StepAmount = 1
|
|
DefaultValue = 400
|
|
|
|
[OptionRangeFloat]
|
|
GUIName = Shoulder Start Alpha
|
|
OptionName = AUTO_HDR_SHOULDER_START_ALPHA
|
|
MinValue = 0
|
|
MaxValue = 1
|
|
StepAmount = 0.01
|
|
DefaultValue = 0
|
|
|
|
[OptionRangeFloat]
|
|
GUIName = Shoulder Pow
|
|
OptionName = AUTO_HDR_SHOULDER_POW
|
|
MinValue = 1
|
|
MaxValue = 10
|
|
StepAmount = 0.05
|
|
DefaultValue = 2.5
|
|
|
|
[/configuration]
|
|
*/
|
|
|
|
void main()
|
|
{
|
|
float4 color = Sample();
|
|
|
|
// Nothing to do here, we are in SDR
|
|
if (!OptionEnabled(hdr_output) || !OptionEnabled(linear_space_output))
|
|
{
|
|
SetOutput(color);
|
|
return;
|
|
}
|
|
|
|
const float hdr_paper_white = hdr_paper_white_nits / hdr_sdr_white_nits;
|
|
|
|
// 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;
|
|
|
|
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)
|
|
{
|
|
const float auto_hdr_shoulder_ratio = 1.0 - (max(1.0 - sdr_ratio, 0.0) / (1.0 - AUTO_HDR_SHOULDER_START_ALPHA));
|
|
const float auto_hdr_extra_ratio = pow(auto_hdr_shoulder_ratio, AUTO_HDR_SHOULDER_POW) * (auto_hdr_max_white - 1.0);
|
|
const float auto_hdr_total_ratio = sdr_ratio + auto_hdr_extra_ratio;
|
|
color.rgb *= auto_hdr_total_ratio / sdr_ratio;
|
|
}
|
|
|
|
color.rgb *= hdr_paper_white;
|
|
|
|
SetOutput(color);
|
|
} |