Add gbuffer_lightning (#1787)

src/main/java/net/coderbot/iris/shaderpack/ProgramSet.java

@@ -41,6 +41,7 @@ public class ProgramSet {
 	private final ProgramSource gbuffersEntities;
 	private final ProgramSource gbuffersEntitiesTrans;
 	private final ProgramSource gbuffersEntitiesGlowing;
+	private final ProgramSource gbuffersLightning;
 	private final ProgramSource gbuffersGlint;
 	private final ProgramSource gbuffersEntityEyes;
 	private final ProgramSource gbuffersBlock;
@@ -120,6 +121,7 @@ public class ProgramSet {
 		this.gbuffersEntities = readProgramSource(directory, sourceProvider, "gbuffers_entities", this, shaderProperties);
 		this.gbuffersEntitiesTrans = readProgramSource(directory, sourceProvider, "gbuffers_entities_translucent", this, shaderProperties);
 		this.gbuffersEntitiesGlowing = readProgramSource(directory, sourceProvider, "gbuffers_entities_glowing", this, shaderProperties);
+		this.gbuffersLightning = readProgramSource(directory, sourceProvider, "gbuffers_lightning", this, shaderProperties);
 		this.gbuffersGlint = readProgramSource(directory, sourceProvider, "gbuffers_armor_glint", this, shaderProperties);
 		this.gbuffersEntityEyes = readProgramSource(directory, sourceProvider, "gbuffers_spidereyes", this, shaderProperties);
 		this.gbuffersBlock = readProgramSource(directory, sourceProvider, "gbuffers_block", this, shaderProperties);
@@ -229,7 +231,7 @@ public class ProgramSet {
 		programs.addAll (Arrays.asList(
 				gbuffersBasic, gbuffersBeaconBeam, gbuffersTextured, gbuffersTexturedLit, gbuffersTerrain,
 				gbuffersDamagedBlock, gbuffersSkyBasic, gbuffersSkyTextured, gbuffersClouds, gbuffersWeather,
-				gbuffersEntities, gbuffersEntitiesTrans, gbuffersEntitiesGlowing, gbuffersGlint, gbuffersEntityEyes, gbuffersBlock, gbuffersBlockTrans,
+				gbuffersEntities, gbuffersEntitiesTrans, gbuffersEntitiesGlowing, gbuffersLightning, gbuffersGlint, gbuffersEntityEyes, gbuffersBlock, gbuffersBlockTrans,
 				gbuffersHand, dhShadow, dhTerrain, dhGeneric, dhWater
 		));
 
@@ -382,6 +384,10 @@ public class ProgramSet {
 		return gbuffersEntitiesGlowing.requireValid();
 	}
 
+	public Optional<ProgramSource> getGbuffersLightning() {
+		return gbuffersLightning.requireValid();
+	}
+
 	public Optional<ProgramSource> getGbuffersGlint() {
 		return gbuffersGlint.requireValid();
 	}
@@ -437,6 +443,7 @@ public class ProgramSet {
 			case Entities -> getGbuffersEntities();
 			case EntitiesTrans -> getGbuffersEntitiesTrans();
 			case EntitiesGlowing -> getGbuffersEntitiesGlowing();
+			case Lightning -> getGbuffersLightning();
 			case ArmorGlint -> getGbuffersGlint();
 			case SpiderEyes -> getGbuffersEntityEyes();
 			case Hand -> getGbuffersHand();