26.3 Distance Texture LOD

🎨 Distance-Based Mob Texture LOD (Minecraft 26.3)

Rendering full 1024x1024 or high-resolution textures on distant mobs that occupy only 4x4 pixels on the player's screen wastes significant GPU VRAM bandwidth and texture sampler cache lines.

Camera Culling includes a decoupled, 3-tier OpenGL Texture LOD Biasing Engine that dynamically adjusts texture mipmap sampling based on entity distance.

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📋 Distance Texture LOD Infobox

Property	Value
Pipeline Hook	LivingEntityRenderer.submit(...) @At("HEAD") & @At("RETURN")
OpenGL Parameter	GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL14.GL_TEXTURE_LOD_BIAS, bias)
Near Threshold	$< 16.0$ blocks $\implies 0.0\text{f}$ Bias (Full Resolution)
Medium Threshold	$16.0 - 32.0$ blocks $\implies 1.0\text{f}$ Bias (Half Resolution)
Far Threshold	$> 32.0$ blocks $\implies 2.5\text{f}$ Bias (Quarter Resolution / Mipmap)
Exemptions	Glowing entities, local player, Bosses & Mini-Bosses, Blacklisted mobs

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🔬 Mathematical Distance LOD Biasing

Camera
  │
  ├── [ 0m to 16m ] ──► Bias 0.0f  (100% Native Full-Res Texture)
  │
  ├── [ 16m to 32m ] ──► Bias 1.0f  (50% Half-Res Mipmap Sampling)
  │
  └── [ > 32m ] ──────► Bias 2.5f  (25% Low-Res Mipmap Sampling)

The LOD bias $B$ is calculated purely from distance squared: $$B(d) = \begin{cases} 0.0\text{f} & \text{if } d^2 < \text{startDist}^2 \ (16.0^2) \ 1.0\text{f} & \text{if } \text{startDist}^2 \le d^2 < \text{farDist}^2 \ (32.0^2) \ 2.5\text{f} & \text{if } d^2 \ge \text{farDist}^2 \end{cases}$$

OpenGL State Isolation

When rendering a living entity, LivingEntityRendererMixin injects at submit:HEAD to apply the calculated bias, and immediately resets it to 0.0f at submit:RETURN. This guarantees that block models, items, and UI elements are never affected.

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🔗 Related Pages

• Boss & Blacklist Immunity
• GUI Configuration (YACL)
• Return to MC 26.3 Overview