---
title: "MakeTX"
canonical: "https://documentation.chaos.com/space/VRAYHOUDINI/113279314/MakeTX"
format: markdown
---
This page provides information on the MakeTX utility and its usage. Overview MakeTX is a command-line utility that converts images to tiled, mip-mapped textures, e.g. a png or jpg image into a mip-mapped .tx file. Such optimizations make files in the .tx format faster to render, and also smaller as the files require less memory. MakeTX is part of  OpenImageIO  and was developed by Larry Gritz at Sony Pictures Imageworks. Usage  This applies to ZIP builds as well. Go to the V-Ray install folder, e.g. C:\Program Files\Chaos\V-Ray\Houdini_20.5.410 Go to the /appsdk/bin folder. Open a Command Prompt / Terminal window and call maketx.exe. A lot of options are available → for more info on those, see Arnold's  MakeTX . Flag Description --help Print help message -v Verbose status messages -o %s Output filename --threads %d Number of threads (default: #cores) -u Update mode --format %s Specify output file format (default: guess from extension) --nchannels %d Specify the number of output image channels. -d %s Set the output data format to one of: uint8, sint8, uint16, sint16, half, float --tile %d %d Specify tile size --separate Use planarconfig separate (default: contiguous) --fov %f Field of view for envcube/shadcube/twofish --fovcot %f Override the frame aspect ratio. Default is width/height. --wrap %s Specify wrap mode (black, clamp, periodic, mirror) --swrap %s Specify s wrap mode separately --twrap %s Specify t wrap mode separately --resize Resize textures to power of 2 (default: no) --noresize Do not resize textures to power of 2 (deprecated) --filter %s Select filter for resizing (choices: box triangle gaussian catrom blackman-harris sinc lanczos3 radial-lanczos3 mitchell bspline, disk, default=box) --nomipmap Do not make multiple MIP-map levels  --checknan Check for NaN/Inf values (abort if found). --Mcamera %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f Set the camera matrix --Mscreen %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f Set the camera matrix --hash Embed SHA-1 hash of pixels in the header (deprecated. hashes are always computed). --prman-metadata Add prman specific metadata --constant-color-detect Create 1-tile textures from constant color inputs --monochrome-detect Create 1-channel textures from monochrome inputs --opaque-detect Drop alpha channel that is always 1.0 --stats Print runtime statistics --mipimage %s Specify an individual MIP level Basic modes (default is plain texture) --shadow Create shadow map --envlatl Create lat/long environment map --envcube Create cubic env map (file order: px, nx, py, ny, pz, nz) (UNIMP) Color Management Options --colorconvert %s %s Apply a color space conversion to the image. If the output color space is not the same bit depth as input color space, it is your responsibility to set the data format to the proper bit depth using the -d option. (choices: linear, sRGB, Rec709) --unpremult  Unpremultiply before color conversion, then premultiply after the color conversion. You'll probably want to use this flag if your image contains an alpha channel. Configuration Presets --oiio Use OIIO-optimized settings for tile size, planarconfig, metadata, and constant-color optimizations. --prman Use PRMan-safe settings for tile size, planarconfig, and metadata.