Render Performance Improvements (#4721)

* Return a fixed bounding box for frustrum culling of AE tile entity renderers to prevent Forge from re-retrieving the TE from the world and calculating the collision box (very costly for cables).

* Changed dynamic cable bus lighting to be based on block states to improved rendering speed and fix optifine issues. (Potential fix for #4716).

src/api/java/appeng/api/networking/GridNotification.java

@@ -28,4 +28,9 @@ public enum GridNotification {
      * the visible connections for this node have changed, useful for cable.
      */
     CONNECTIONS_CHANGED,
+
+    /**
+     * the owner of the grid node has changed, and the node needs to be re-saved
+     */
+    OWNER_CHANGED
 }

src/api/java/appeng/api/networking/IGridBlock.java

@@ -87,7 +87,8 @@ public interface IGridBlock {
     AEColor getGridColor();
 
     /**
-     * Notifies your IGridBlock that changes were made to your connections
+     * Called by the {@link IGridNode} to notify its {@link IGridBlock} about
+     * events.
      */
     void onGridNotification(@Nonnull GridNotification notification);
 

src/main/java/appeng/block/networking/CableBusBlock.java

@@ -39,6 +39,8 @@ import net.minecraft.item.BlockItemUseContext;
 import net.minecraft.item.DyeColor;
 import net.minecraft.item.ItemGroup;
 import net.minecraft.item.ItemStack;
+import net.minecraft.state.IntegerProperty;
+import net.minecraft.state.StateContainer;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.ActionResultType;
 import net.minecraft.util.Direction;
@@ -82,8 +84,12 @@ public class CableBusBlock extends AEBaseTileBlock<CableBusTileEntity> implement
 
     private static final ICableBusContainer NULL_CABLE_BUS = new NullCableBusContainer();
 
+    private static final IntegerProperty LIGHT_LEVEL = IntegerProperty.create("light_level", 0, 15);
+
     public CableBusBlock() {
-        super(defaultProps(AEMaterials.GLASS).notSolid().noDrops().variableOpacity());
+        super(defaultProps(AEMaterials.GLASS).notSolid().noDrops().variableOpacity()
+                .setLightLevel(state -> state.get(LIGHT_LEVEL)));
+        setDefaultState(getDefaultState().with(LIGHT_LEVEL, 0));
     }
 
     @Override
@@ -126,11 +132,9 @@ public class CableBusBlock extends AEBaseTileBlock<CableBusTileEntity> implement
     }
 
     @Override
-    public int getLightValue(final BlockState state, final IBlockReader world, final BlockPos pos) {
-        if (state.getBlock() != this) {
-            return state.getBlock().getLightValue(state, world, pos);
-        }
-        return this.cb(world, pos).getLightValue();
+    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
+        super.fillStateContainer(builder);
+        builder.add(LIGHT_LEVEL);
     }
 
     @Override
@@ -386,4 +390,13 @@ public class CableBusBlock extends AEBaseTileBlock<CableBusTileEntity> implement
         }
     }
 
+    @Override
+    protected BlockState updateBlockStateFromTileEntity(BlockState currentState, CableBusTileEntity te) {
+        if (currentState.getBlock() != this) {
+            return currentState;
+        }
+        int lightLevel = te.getCableBus().getLightValue();
+        return super.updateBlockStateFromTileEntity(currentState, te).with(LIGHT_LEVEL, lightLevel);
+    }
+
 }

src/main/java/appeng/me/GridNode.java

@@ -327,8 +327,9 @@ public class GridNode implements IGridNode, IPathItem {
 
     @Override
     public void setPlayerID(final int playerID) {
-        if (playerID >= 0) {
+        if (playerID >= 0 && this.playerID != playerID) {
             this.playerID = playerID;
+            gridProxy.onGridNotification(GridNotification.OWNER_CHANGED);
         }
     }
 

src/main/java/appeng/me/cache/SecurityCache.java

@@ -81,8 +81,16 @@ public class SecurityCache implements ISecurityGrid {
     private void updateSecurityKey() {
         final long lastCode = this.securityKey;
 
+        /**
+         * Placing a security station will propagate the security station's owner to all
+         * connected grid nodes to prevent the network from not reforming due to
+         * different owners later.
+         */
+        int newOwner = -1;
         if (this.securityProvider.size() == 1) {
-            this.securityKey = this.securityProvider.get(0).getSecurityKey();
+            ISecurityProvider securityProvider = this.securityProvider.get(0);
+            this.securityKey = securityProvider.getSecurityKey();
+            newOwner = securityProvider.getOwner();
         } else {
             this.securityKey = -1;
         }
@@ -90,7 +98,11 @@ public class SecurityCache implements ISecurityGrid {
         if (lastCode != this.securityKey) {
             this.getGrid().postEvent(new MENetworkSecurityChange());
             for (final IGridNode n : this.getGrid().getNodes()) {
-                ((GridNode) n).setLastSecurityKey(this.securityKey);
+                GridNode gridNode = (GridNode) n;
+                gridNode.setLastSecurityKey(this.securityKey);
+                if (gridNode.getPlayerID() != newOwner) {
+                    gridNode.setPlayerID(newOwner);
+                }
             }
         }
     }

src/main/java/appeng/me/helpers/AENetworkProxy.java

@@ -167,7 +167,6 @@ public class AENetworkProxy implements IGridBlock {
      * short cut!
      *
      * @return grid of node
-     *
      * @throws GridAccessException of node or grid is null
      */
     public IGrid getGrid() throws GridAccessException {
@@ -280,6 +279,11 @@ public class AENetworkProxy implements IGridBlock {
 
     @Override
     public void onGridNotification(final GridNotification notification) {
+        if (notification == GridNotification.OWNER_CHANGED) {
+            gp.saveChanges();
+            return;
+        }
+
         if (this.gp instanceof CablePart) {
             ((CablePart) this.gp).markForUpdate();
         }

src/main/java/appeng/me/helpers/IGridProxyable.java

@@ -28,4 +28,7 @@ public interface IGridProxyable extends IGridHost {
     DimensionalCoord getLocation();
 
     void gridChanged();
+
+    void saveChanges();
+
 }

src/main/java/appeng/tile/AEBaseTileEntity.java

@@ -39,10 +39,13 @@ import net.minecraft.network.play.server.SUpdateTileEntityPacket;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.tileentity.TileEntityType;
 import net.minecraft.util.Direction;
+import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.text.ITextComponent;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.world.World;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.client.model.data.IModelData;
 import net.minecraftforge.items.IItemHandler;
 
@@ -458,4 +461,15 @@ public class AEBaseTileEntity extends TileEntity implements IOrientable, ICommon
         return new AEModelData(up, forward);
     }
 
+    /**
+     * AE Tile Entities will generally confine themselves to rendering within the
+     * bounding block. Forge however would retrieve the collision box here, which is
+     * very expensive.
+     */
+    @OnlyIn(Dist.CLIENT)
+    @Override
+    public AxisAlignedBB getRenderBoundingBox() {
+        return new AxisAlignedBB(pos, pos.add(1, 1, 1));
+    }
+
 }