ID uniforms Uniforms

These uniforms store block, item, and entity IDs in different scenarios, as well as properties related to those. More information on IDs can be found in the block.properties, item.properties, and entity.properties pages.

entityId

uniform int entityId;

This uniform stores the id (from entity.properties) of the current entity. Value is 0 if no entity.properties is present. Value 65535 if entity.properties is present and the entity is not in the file.

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blockEntityId

uniform int blockEntityId;

This uniform stores the id (from block.properties) of the current block entity (a tile entity). Value is 0 if no block.properties is present. Value is 65535 if block.properties is present and the block entity is not in the file.

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currentRenderedItemId Iris Exclusive

uniform int currentRenderedItemId;

Iris allows detecting items and armor during rendering on anything.

Using uniform int currentRenderedItemId;, you can detect items and armor rendered in the level at the point of render (based on item.properties for items and armour, and block.properties for block items). This is similar to heldItemId and heldItemId2, except it applies to the currently rendered item/armor instead of the held item.

There are some new ID’s that can be detected alongside items and armor:

trim_material to detect armor trims on armor. (For example, trim_emerald).

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currentSelectedBlockId Iris Exclusive

uniform int currentSelectedBlockId;

This uniform stores the id (from block.properties) of the block selected by the player (with the block outline). Value is 0 if no block is selected, if the selected block is not in block.properties, or if no block.properties is file present.

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currentSelectedBlockPos Iris Exclusive

uniform vec3 currentSelectedBlockId;

This uniform stores the player space position of the center of the block selected by the player (with the block outline). If no block is selected, the values of all components will be -256.0.

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heldItemId

uniform int heldItemId;

This uniform stores the id (from item.properties) of the item currently held in the main hand. Value is 0 if no item.properties is present. Value is -1 if item.properties is present and the player holds an item not in the file (this includes holding nothing).

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heldItemId2

uniform int heldItemId2;

This uniform stores the id (from item.properties) of the item currently held in the off hand. Value is 0 if no item.properties is present. Value is -1 if item.properties is present and the player holds an item not in the file (this includes holding nothing).

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heldBlockLightValue

uniform int heldBlockLightValue;

The light strength of the item held in the player’s hand. This ranges from 0-15 for vanilla blocks, however some modded blocks may have a higher value.

Note: if oldHandLight is not set to false, heldBlockLightValue will take its value from the hand with the highest light value for legacy support.

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heldBlockLightValue2

uniform int heldBlockLightValue2;

The light strength of the item held in the player’s offhand. This ranges from 0-15 for vanilla blocks, however some modded blocks may have a higher value.

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