World Viewer

Evidence

Ran on Kiln's test stand (2026-11-04): WorldDownloaderClient did not start: java.lang.NoClassDefFoundError: net/minecraft/core/BlockPos$MutableBlockPos.

What it needs from Kiln

• com.mojang.blaze3d.Blaze3D
• com.mojang.blaze3d.ProjectionType
• com.mojang.blaze3d.buffers.Std140Builder
• com.mojang.blaze3d.pipeline.TextureTarget
• com.mojang.blaze3d.platform.InputConstants.Key
• com.mojang.blaze3d.platform.NativeImage
• com.mojang.blaze3d.platform.Window
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.blaze3d.systems.RenderSystem.AutoStorageIndexBuffer
• com.mojang.blaze3d.systems.SamplerCache
• com.mojang.blaze3d.vertex.BufferBuilder
• com.mojang.blaze3d.vertex.ByteBufferBuilder
• com.mojang.blaze3d.vertex.DefaultVertexFormat
• com.mojang.blaze3d.vertex.MeshData
• com.mojang.blaze3d.vertex.MeshData.DrawState
• com.mojang.blaze3d.vertex.VertexConsumer
• com.mojang.renderpearl.api.GpuFormat
• com.mojang.renderpearl.api.buffers.GpuBuffer
• com.mojang.renderpearl.api.buffers.GpuBufferSlice
• 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.BlendFunction
• com.mojang.renderpearl.api.pipeline.ColorTargetState
• com.mojang.renderpearl.api.pipeline.CompareOp
• com.mojang.renderpearl.api.pipeline.DepthStencilState
• com.mojang.renderpearl.api.pipeline.IndexType
• 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.GpuSampler
• com.mojang.renderpearl.api.textures.GpuTexture
• com.mojang.renderpearl.api.textures.GpuTextureView
• com.mojang.renderpearl.api.vertex.VertexFormat
• and 81 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3)

In the author's words

Download the chunks a server sends you into a normal singleplayer world, with a live 2D/3D map of exactly what you have.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file world-viewer-0.3.0+mc26.3.jar. The scan reads the mod's classes; it does not run them.