DLSSNR: add automatic exposure and trim anchors

Author: github-actions[bot]

OptiScaler/Config.cpp

@@ -342,6 +342,11 @@ bool Config::Reload(std::filesystem::path iniPath)
             DlssNrUseProxy.set_from_config(readBool("DlssNr", "UseProxy"));
             DlssNrScanExposure.set_from_config(readBool("DlssNr", "ScanExposure"));
             DlssNrWhitePointSource.set_from_config(readUInt("DlssNr", "WhitePointSource"));
+            DlssNrAutoExposureTrim.set_from_config(readFloat("DlssNr", "AutoExposureTrim"));
+            DlssNrAutoExposureShadowProtection.set_from_config(
+                readFloat("DlssNr", "AutoExposureShadowProtection"));
+            DlssNrGameExposureTrimAnchors.set_from_config(readString("DlssNr", "GameExposureTrimAnchors"));
+            DlssNrAutoExposureTrimAnchors.set_from_config(readString("DlssNr", "AutoExposureTrimAnchors"));
 
             // Migrate the retired flag only when the new key was genuinely absent, which is why this
             // has to run AFTER the read above -- set_from_config assigns only into an empty optional,
@@ -1240,6 +1245,14 @@ bool Config::SaveIni()
     // restart -- the white-point source, both trims, the anchor, the pass count and the rest all
     // reset to default on the next run.
     ini.SetValue("DlssNr", "WhitePointSource", GetIntValue(Instance()->DlssNrWhitePointSource.value_for_config()).c_str());
+    ini.SetValue("DlssNr", "AutoExposureTrim",
+                 GetFloatValue(Instance()->DlssNrAutoExposureTrim.value_for_config()).c_str());
+    ini.SetValue("DlssNr", "AutoExposureShadowProtection",
+                 GetFloatValue(Instance()->DlssNrAutoExposureShadowProtection.value_for_config()).c_str());
+    ini.SetValue("DlssNr", "GameExposureTrimAnchors",
+                 Instance()->DlssNrGameExposureTrimAnchors.value_for_config_or("").c_str());
+    ini.SetValue("DlssNr", "AutoExposureTrimAnchors",
+                 Instance()->DlssNrAutoExposureTrimAnchors.value_for_config_or("").c_str());
     ini.SetValue("DlssNr", "WhitePointTrim", GetFloatValue(Instance()->DlssNrWhitePointTrim.value_for_config()).c_str());
     ini.SetValue("DlssNr", "ScanTrim", GetFloatValue(Instance()->DlssNrScanTrim.value_for_config()).c_str());
     ini.SetValue("DlssNr", "ScanAnchorValue", GetFloatValue(Instance()->DlssNrScanAnchorValue.value_for_config()).c_str());

OptiScaler/Config.h

@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include "SysUtils.h"
 #include "State.h"
@@ -427,8 +427,9 @@ class Config
     // Where the white point comes from. One control, because there is one answer.
     //
     //   0  the paper white slider, and nothing else
-    //   1  the exposure the game hands the upscaler
-    //   2  a buffer the scan found, anchored to a white point the user chose once
+    //   1  the exposure the game hands the upscaler (game only; no automatic fallback)
+    //   2  OptiScaler automatic exposure, calculated from the original linear-HDR frame
+    //   3  a buffer the scan found, anchored to a white point the user chose once
     //
     // This replaces two independent checkboxes that could both be on. They were made exclusive by
     // greying, which deadlocked -- each disabled the other, so once both were set the only way out
@@ -437,6 +438,20 @@ class Config
     // choice cannot reach it: there is nothing to keep consistent, because there is only one value.
     CustomOptional<uint32_t> DlssNrWhitePointSource { 1 };
 
+    // Separate trim for OptiScaler's own GPU-calculated exposure (WhitePointSource == 2).
+    CustomOptional<float> DlssNrAutoExposureTrim { 5.0f };
+    CustomOptional<float> DlssNrAutoExposureShadowProtection { 100.0f };
+
+    // Base-white-point-dependent Trim calibration tables, serialized as baseWhitePoint:trim pairs.
+    // The two sources are intentionally separate because their white-point scales need not match.
+    CustomOptional<std::string> DlssNrGameExposureTrimAnchors { std::string() };
+    CustomOptional<std::string> DlssNrAutoExposureTrimAnchors { std::string() };
+
+    // Calibration aid only. These are deliberately not persisted: after a restart anchors are
+    // active again, rather than a forgotten preview checkbox silently bypassing them.
+    CustomOptional<bool> DlssNrGameExposureTrimPreview { false };
+    CustomOptional<bool> DlssNrAutoExposureTrimPreview { false };
+
     CustomOptional<bool> DlssNrScanMeter { false };
 
     CustomOptional<float> DlssNrScanAnchorValue { 0.0f };       // legacy single anchor, migrated then unused

OptiScaler/dlssnr/DlssNrFeature_Dx12.h

@@ -163,6 +163,7 @@ struct ExposureStatus
 };
 
 ExposureStatus GameExposureStatus();
+ExposureStatus AutoExposureStatus();
 
 // The white point the exposure meter has settled on, or 0 if it has not taken a reading yet. For the
 // overlay, so the number in use is visible rather than inferred.