Apoli: Backport EdwinMindcraft/origins-architectury#334.

src/main/java/io/github/apace100/apoli/mixin/GameRendererMixin.java

@@ -11,6 +11,7 @@
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.multiplayer.ClientLevel;
 import net.minecraft.client.renderer.GameRenderer;
+import net.minecraft.client.renderer.PostChain;
 import net.minecraft.core.BlockPos;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.packs.resources.ResourceManager;
@@ -37,6 +38,7 @@
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
+import javax.annotation.Nullable;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Optional;
@@ -59,6 +61,11 @@ public abstract class GameRendererMixin {
 	@Final
 	private ResourceManager resourceManager;
 
+	@Shadow @Nullable
+	private PostChain postEffect;
+
+	@Shadow private boolean effectActive;
+
 	@Shadow
 	public abstract void loadEffect(ResourceLocation identifier);
 
@@ -78,7 +85,7 @@ private void loadShaderFromPowerOnCameraEntity(Entity entity, CallbackInfo ci) {
 		}
 	}
 
-	/*@Inject(at = @At("HEAD"), method = "render")
+	@Inject(at = @At("HEAD"), method = "render")
 	private void loadShaderFromPower(float tickDelta, long startTime, boolean tick, CallbackInfo ci) {
 		if (ApoliPowers.SHADER.isPresent()) {
 			IPowerContainer.withPower(this.minecraft.getCameraEntity(), ApoliPowers.SHADER.get(), null, shaderPower -> {
@@ -97,7 +104,7 @@ private void loadShaderFromPower(float tickDelta, long startTime, boolean tick,
 				this.currentlyLoadedShader = null;
 			}
 		}
-	}*/
+	}
 
 	@Inject(at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Minecraft;getMainRenderTarget()Lcom/mojang/blaze3d/pipeline/RenderTarget;"), method = "render")
 	private void fixHudWithShaderEnabled(float tickDelta, long nanoTime, boolean renderLevel, CallbackInfo info) {