Ubershader: Add lighting shadergen override

src/config.cpp

@@ -64,6 +64,9 @@ void EmulatorConfig::load() {
 			vsyncEnabled = toml::find_or<toml::boolean>(gpu, "EnableVSync", true);
 			useUbershaders = toml::find_or<toml::boolean>(gpu, "UseUbershaders", ubershaderDefault);
 			accurateShaderMul = toml::find_or<toml::boolean>(gpu, "AccurateShaderMultiplication", false);
+
+			forceShadergenForLights = toml::find_or<toml::boolean>(gpu, "ForceShadergenForLighting", true);
+			lightShadergenThreshold = toml::find_or<toml::integer>(gpu, "ShadergenLightThreshold", 1);
 		}
 	}
 
@@ -130,6 +133,8 @@ void EmulatorConfig::save() {
 	data["GPU"]["EnableVSync"] = vsyncEnabled;
 	data["GPU"]["AccurateShaderMultiplication"] = accurateShaderMul;
 	data["GPU"]["UseUbershaders"] = useUbershaders;
+	data["GPU"]["ForceShadergenForLighting"] = forceShadergenForLights;
+	data["GPU"]["ShadergenLightThreshold"] = lightShadergenThreshold;
 
 	data["Audio"]["DSPEmulation"] = std::string(Audio::DSPCore::typeToString(dspType));
 	data["Audio"]["EnableAudio"] = audioEnabled;