Debug renderer

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Debug renderers are a set of graphical tools used for technical analysis of Minecraft.

Renderers

3d_crosshair

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By default, this renderer is set to only appear if the debug overlay is enabled, replacing the normal crosshair. It can be configured like all other debug renderers.

This replaces the crosshair with three edges of a cube, culminating at one vertex. The constituent lines point in the three positive directions, such that it appears "concave" to the all-positives direction, and "convex" to the all-negatives direction. The X-axis is represented by a red line, the Y-axis by a green line, and the Z-axis by a blue line.

chunk_borders

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chunk_section_octree

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chunk_section_paths

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chunk_section_visibility

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entity_hitboxes

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Hitboxes are shown on visible entities.

• White bounding box
• A long blue tint for direction facing
• Red outlines for the eye height (if any)
• Yellow outlines for the passenger attachment point (if any)

Note that the shown hitbox is just a visual box relative to the visual model, rather than the actual hitbox, which means that the shown hitbox and the actual hitbox could be desynchronized.

visualize_block_light_levels

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visualize_chunks_on_server

Displays information about each chunk's load level and status. Renders the chunk colormap in the debug screen.

visualize_collision_boxes

Displays collision boxes of nearby blocks.

visualize_entity_supporting_block

Marks the blocks that entities are considered standing on (red for the player, green for everything else, light blue for blocks under thin blocks, like carpet).

visualize_heightmap

Displays the values of heightmaps:​^{[more information needed]}

• Dark Teal: MOTION_BLOCKING
• Green: WORLD_SURFACE
• Blue: OCEAN_FLOOR
• Cyan: MOTION_BLOCKING_NO_LEAVES

visualize_sky_light_levels

Displays the light engine status for each chunk section. A 2 means an empty section with no lighting data, a 1 means a section with only lighting data, and a 0 means a section with lighting data and block shape data.

visualize_sky_light_sections

Displays information about sky light for every chunk section. No coloring means an empty section with no lighting data, brown means a section with only lighting data, and yellow means a section with lighting data and block shape data.

visualize_solid_faces

Highlights all solid, sturdy block faces (that a button can be placed on) in red.

visualize_water_levels

Indicates the fluid level of the water from an integer number ranging from eight (water source) to one (the farthest point that flowing water can flow before stopping).

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