Smooth Motion Blur

Evidence

Ran on Kiln's test stand (2026-11-04): MotionBlurClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/command/v2/ClientCommandRegistrationCallback.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.buffers.Std140Builder
• com.mojang.blaze3d.buffers.Std140SizeCalculator
• com.mojang.blaze3d.pipeline.RenderTarget
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.blaze3d.systems.SamplerCache
• com.mojang.renderpearl.api.GpuFormat
• com.mojang.renderpearl.api.buffers.GpuBuffer
• com.mojang.renderpearl.api.buffers.GpuBufferSlice
• com.mojang.renderpearl.api.buffers.GpuBufferSlice.MappedView
• com.mojang.renderpearl.api.commands.CommandEncoder
• com.mojang.renderpearl.api.commands.RenderPass
• com.mojang.renderpearl.api.device.DeviceInfo
• com.mojang.renderpearl.api.device.GpuDevice
• com.mojang.renderpearl.api.pipeline.BindGroupLayout
• com.mojang.renderpearl.api.pipeline.BindGroupLayout.Builder
• com.mojang.renderpearl.api.pipeline.ColorTargetState
• com.mojang.renderpearl.api.pipeline.PrimitiveTopology
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Snippet
• com.mojang.renderpearl.api.pipeline.UniformType
• com.mojang.renderpearl.api.textures.FilterMode
• com.mojang.renderpearl.api.textures.GpuTexture
• com.mojang.renderpearl.api.textures.GpuTextureView
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource
• net.minecraft.client.CameraType
• net.minecraft.client.Options
• net.minecraft.client.renderer.GameRenderer
• net.minecraft.client.renderer.MappableRingBuffer
• net.minecraft.client.renderer.RenderPipelines
• FabricLoader.isModLoaded()
• Minecraft.gameRenderer
• Minecraft.options
• LocalPlayer.isPassenger()

On the roadmap: Minecraft's libraries and client API (0.2), Mixin (0.5)

In the author's words

Adds smooth velocity-based motion blur to your game compatible with VulkanMod, Sodium and many more!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file smooth-motion-blur-26.3-1.1.0.jar. The scan reads the mod's classes; it does not run them.