Texture Toolkit: Channel Packer (ORM, Masks, Swizzle)
OccaSoftware
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Pack separate grayscale maps into the RGBA channels of one texture: ORM, URP mask maps, or any custom layout. Per-channel source selection, inversion, and one-click presets.Texture Toolkit packs your separate grayscale maps into a single texture, so your shaders sample one map instead of three or four. Fewer samples, less memory, same result.Any channel from any source. Assign a texture to each of the R, G, B and A slots, and choose which channel to read from it: red, green, blue, alpha, or luminance. Any slot can also be a constant 0 or 1 when you do not have a map for it.Invert per channel. Flip any channel on the way in, which is what you usually need when converting between roughness and smoothness conventions.One-click presets. ORM (occlusion, roughness, metallic), URP mask map, and a clear preset to start over, so the common cases take a single click.Output on your terms. Keep the source resolution or force a fixed size from 256 up to 4096, and choose linear or sRGB. The importer settings on the saved file are configured for you, so the packed map is not accidentally treated as color data.No Read/Write required. Source textures are sampled through the GPU, so you do not have to go and tick Read/Write Enabled on every input first.Editor tool: Window > OccaSoftware > Texture Toolkit. Saves a PNG into your project.Includes documentation.Supported: Unity 6.0 LTS and up.Pack any texture into each of the R, G, B and A channels of one output textureChoose the source channel per slot: red, green, blue, alpha or luminance, or a constant 0 or 1Invert any channel, for roughness and smoothness conversionsOne-click presets: ORM (occlusion, roughness, metallic), URP mask map, and clearOutput at the source resolution or a fixed size from 256 to 4096Linear or sRGB output, with the saved file's importer settings configured for youSource textures do not need Read/Write EnabledEditor tool: Window > OccaSoftware > Texture ToolkitDocumentation includedSupported: Unity 6.0 LTS and upThe C# source in this package was authored with AI assistance (Anthropic's Claude), directed and reviewed by a human developer at OccaSoftware. The packing maths was verified against known values before release: solid inputs of 0.25, 0.50 and 0.75 were packed into R, G and B and the output pixels were read back and confirmed to be exactly 64, 128 and 191 with alpha 255. No AI-generated art, audio, or third-party content is included. The package contains only source code and documentation.
