Fix Anti-Aliasing on Nvidia

by disabling forced Anti-Aliasing Gamma Correction in the driver
oomek · Jan 12, 2024 · 149af25 · 149af25
1 parent c9b67ea
commit 149af25
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Showing 2 changed files with 35 additions and 5 deletions.
diff --git a/extlibs/nvapi/nvapi.hpp b/extlibs/nvapi/nvapi.hpp
@@ -32,10 +32,11 @@ namespace {
 
 	int nvapi_init()
 	{
-		const bool disableThreadedOptimizations   = true;
-		const bool setMaximumPerformance          = true;
-		const bool disableTripleBuffering         = true;
-		const bool setPrerenderedFrames           = true;
+		const bool disableThreadedOptimizations             = true;
+		const bool setMaximumPerformance                    = true;
+		const bool disableTripleBuffering                   = true;
+		const bool setPrerenderedFrames                     = true;
+		const bool disableAntialiasingGammaCorrection       = true;
 
 		const wchar_t* profileName                = L"Attract Mode";
 		const wchar_t* appName                    = L"";
@@ -229,6 +230,22 @@ namespace {
 			FeDebug() << "NvAPI: GPU Maximum Performance ON: " << nvapi_get_error_msg( status );
 		}
 
+		// Set Antialiasing Gamma Correction
+		if ( disableAntialiasingGammaCorrection )
+		{
+			setting.version                 = NVDRS_SETTING_VER;
+			setting.settingId               = AA_MODE_GAMMACORRECTION_ID;
+			setting.settingType             = NVDRS_DWORD_TYPE;
+			setting.settingLocation         = NVDRS_CURRENT_PROFILE_LOCATION;
+			setting.isCurrentPredefined     = 0;
+			setting.isPredefinedValid       = 0;
+			setting.u32CurrentValue         = AA_MODE_GAMMACORRECTION_OFF;
+			setting.u32PredefinedValue      = AA_MODE_GAMMACORRECTION_OFF;
+
+			status = NvAPI_DRS_SetSetting( hSession, hProfile, &setting );
+			FeDebug() << "NvAPI: Antialiasing Gamma Correction OFF: " << nvapi_get_error_msg( status );
+		}
+
 		// Save changes
 		status = NvAPI_DRS_SaveSettings( hSession );
 		FeDebug() << "NvAPI: Saving Nvidia profile: " << nvapi_get_error_msg( status );

diff --git a/extlibs/nvapi/nvapi_definitions.hpp b/extlibs/nvapi/nvapi_definitions.hpp
@@ -11,7 +11,8 @@ enum Esetting {
 	OGL_TRIPLE_BUFFER_ID                                = 0x20FDD1F9,
 	PREFERRED_PSTATE_ID                                 = 0x1057EB71,
 	PRERENDERLIMIT_ID                                   = 0x007BA09E,
-	OGL_MAX_FRAMES_ALLOWED_ID                           = 0x208E55E3
+	OGL_MAX_FRAMES_ALLOWED_ID                           = 0x208E55E3,
+	AA_MODE_GAMMACORRECTION_ID                          = 0x107D639D
 };
 
 enum EValues_OGL_THREAD_CONTROL {
@@ -49,6 +50,18 @@ enum EValues_PRERENDERLIMIT {
     PRERENDERLIMIT_DEFAULT = PRERENDERLIMIT_APP_CONTROLLED
 };
 
+enum EValues_AA_MODE_GAMMACORRECTION {
+    AA_MODE_GAMMACORRECTION_MASK                         = 0x00000003,
+    AA_MODE_GAMMACORRECTION_OFF                          = 0x00000000,
+    AA_MODE_GAMMACORRECTION_ON_IF_FOS                    = 0x00000001,
+    AA_MODE_GAMMACORRECTION_ON_ALWAYS                    = 0x00000002,
+    AA_MODE_GAMMACORRECTION_MAX                          = 0x00000002,
+    AA_MODE_GAMMACORRECTION_DEFAULT                      = 0x00000000,
+    AA_MODE_GAMMACORRECTION_DEFAULT_TESLA                = 0x00000002,
+    AA_MODE_GAMMACORRECTION_DEFAULT_FERMI                = 0x00000002,
+    AA_MODE_GAMMACORRECTION_NUM_VALUES = 8,
+};
+
 typedef enum _NvAPI_Status
 {
 	NVAPI_OK                                    =  0,      //!< Success. Request is completed.