COMPILED File

What are COMPILED files and how to open them

Are you having problems opening a COMPILED file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your COMPILED files.

What is a COMPILED file?

A .COMPILED file is a Flare3D Shader Language Compiled file.

Flare3D Shader Language Compiled files contain pre-compiled shader bytecode used by the Flare3D engine's proprietary GPU shader system known as FLSL (Flare3D Shader Language). They are generated by compiling shader source written in FLSL - shader code that defines vertex and fragment-stage behavior, inputs and constants - as a Binary ByteArray used at runtime. Flare3D embeds these compiled shaders into its materials so that rendering under the Stage3D API can proceed without needing to compile FLSL source every time.

The Flare3D authoring tools or runtime classes write these files via the FLSLCompiler component of Flare3D. Flare3D programs (in ActionScript) load these compiled bytecode blobs using the FLSLFilter class (or via a material's Shader3D.program property), which provides the shader for rendering objects. The bytecode includes all shader techniques and parameter/default values defined in the original FLSL source. Because the intermediate form is a compact binary, it reduces load-time overhead and hides FLSL source from end users.

Internal structure begins with a magic header signature: the ASCII string "FLSL" followed immediately by a version byte value 0x01 at offset zero.

How to open COMPILED files

Important: Different programs may use files with the COMPILED file extension for different purposes, so unless you are sure which format your COMPILED file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: September 2, 2026

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