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https://github.com/dolphin-emu/dolphin.git
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fff8338c8b
If checked, display peak will always be used. Works even across different devices if ini is saved on the cloud. Or game is changed between different displays.
81 lines
2.2 KiB
GLSL
81 lines
2.2 KiB
GLSL
// Based on https://github.com/Filoppi/PumboAutoHDR
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/*
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[configuration]
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[OptionBool]
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GUIName = Use Display Peak Luminance
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OptionName = USE_DISPLAY_PEAK_LUMINANCE
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DefaultValue = 0
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[OptionRangeFloat]
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GUIName = HDR Display Max Nits
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OptionName = HDR_DISPLAY_MAX_NITS
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MinValue = 80
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MaxValue = 2000
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StepAmount = 1
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DefaultValue = 400
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[OptionRangeFloat]
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GUIName = Shoulder Start Alpha
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OptionName = AUTO_HDR_SHOULDER_START_ALPHA
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MinValue = 0
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MaxValue = 1
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StepAmount = 0.01
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DefaultValue = 0
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[OptionRangeFloat]
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GUIName = Shoulder Pow
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OptionName = AUTO_HDR_SHOULDER_POW
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MinValue = 1
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MaxValue = 10
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StepAmount = 0.05
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DefaultValue = 2.5
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[/configuration]
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*/
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float luminance(float3 color)
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{
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return dot(color, float3(0.2126f, 0.7152f, 0.0722f));
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}
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void main()
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{
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float4 color = Sample();
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// Nothing to do here, we are in SDR
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if (!OptionEnabled(hdr_output) || !OptionEnabled(linear_space_output))
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{
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SetOutput(color);
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return;
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}
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const float hdr_paper_white = hdr_paper_white_nits / hdr_sdr_white_nits;
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// Restore the original SDR (0-1) brightness (we might or might not restore it later)
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color.rgb /= hdr_paper_white;
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// Find the color luminance (it works better than average)
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float sdr_ratio = luminance(color.rgb);
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// When "Use Display Peak Luminance" is enabled, use the peak luminance reported by the display
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// (only available on DirectX 11/12). Falls back to the manual slider on other APIs or if
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// no display data is available.
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const float display_max_nits = (OptionEnabled(USE_DISPLAY_PEAK_LUMINANCE) && hdr_max_luminance_nits > 0.0)
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? hdr_max_luminance_nits
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: HDR_DISPLAY_MAX_NITS;
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const float auto_hdr_max_white = max(display_max_nits / (hdr_paper_white_nits / hdr_sdr_white_nits), hdr_sdr_white_nits) / hdr_sdr_white_nits;
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if (sdr_ratio > AUTO_HDR_SHOULDER_START_ALPHA && AUTO_HDR_SHOULDER_START_ALPHA < 1.0)
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{
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const float auto_hdr_shoulder_ratio = 1.0 - (max(1.0 - sdr_ratio, 0.0) / (1.0 - AUTO_HDR_SHOULDER_START_ALPHA));
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const float auto_hdr_extra_ratio = pow(auto_hdr_shoulder_ratio, AUTO_HDR_SHOULDER_POW) * (auto_hdr_max_white - 1.0);
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const float auto_hdr_total_ratio = sdr_ratio + auto_hdr_extra_ratio;
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color.rgb *= auto_hdr_total_ratio / sdr_ratio;
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}
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color.rgb *= hdr_paper_white;
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SetOutput(color);
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}
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