maketx - Man Page

convert images to tiled, MIP-mapped textures


Usage: maketx [options] file...


This program is part of the OpenImageIO ( tool suite. Detailed documentation is available in pdf format with the OpenImageIO distribution.



Print help message


Print version and exit


Verbose status messages


Output filename

--threads NUMTHREADS

Number of threads (default: #cores)


Update mode


Specify output file format (default: guess from extension)

--nchannels N

Specify the number of output image channels.


Rename channels (comma-separated)


Set the output data format to one of: uint8, sint8, uint16, sint16, half, float


Specify tile size


Use planarconfig separate (default: contiguous)

--compression NAME

Set the compression method (default = zip, if possible)

--fovcot FOVCAT

Override the frame aspect ratio. Default is width/height.

--wrap WRAP

Specify wrap mode (black, clamp, periodic, mirror)

--swrap WRAP

Specific s wrap mode separately

--twrap WRAP

Specific t wrap mode separately


Resize textures to power of 2 (default: no)


Do not resize textures to power of 2 (deprecated)


Select filter for resizing (choices: box triangle gaussian sharp-gaussian catmull-rom blackman-harris sinc lanczos3 radial-lanczos3 nuke-lanczos6 mitchell bspline disk cubic keys simon rifman, default=box)


Compress HDR range before resize, expand after.

--sharpen SHARPEN

Sharpen MIP levels (default = 0.0 = no)


Do not make multiple MIP-map levels


Check for NaN/Inf values (abort if found)

--fixnan STRATEGY

Attempt to fix NaN/Inf values in the image (options: none, black, box3)


Set the 'full' image range to be the pixel data window --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 screen matrix --MNDC %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f Set the NDC matrix


Add prman specific metadata

--attrib NAME VALUE

Sets metadata attribute (name, value)

--sattrib NAME VALUE

Sets string metadata attribute (name, value)


Write command line into Software & ImageHistory but remove --sattrib and --attrib options


Create 1-tile textures from constant color inputs


Create 1-channel textures from monochrome inputs


Drop alpha channel that is always 1.0


Don't compute and store average color


Ignore unassociated alpha tags in input (don't autoconvert)


Print runtime statistics

--mipimage FILENAME

Specify an individual MIP level


Store the forward and inverse Gaussian CDF as a lookup-table. The variance is set by cdfsigma (1/6 by default), and the number of buckets               in the lookup table is determined by cdfbits (8 bit - 256 buckets by default)

--cdfsigma N

Specify the Gaussian sigma parameter when writing the forward and inverse Gaussian CDF data. The default vale is 1/6 (0.1667)

--cdfbits N

Specify the number of bits used to store the forward and inverse Gaussian CDF. The default value is 8 bits

Basic modes (default is plain texture):


Create shadow map


Create lat/long environment map


Create lat/long environment map from a light probe


Create a 6 channels bump-map with height, derivatives and square derivatives from an height or a normal map

--uvslopes_scale VALUE

If specified, compute derivatives for --bumpslopes in UV space rather than in texel space and divide them by a scale factor. 0=disable by default, only valid for height maps.

--bumpformat NAME

Specify the interpretation of a 3-channel input image for --bumpslopes: "height", "normal" or "auto" (default).

--handed STRING

Specify the handedness of a vector or normal map: "left", "right", or "" (default).

Color Management Options (OpenColorIO DISABLED)

--colorconfig FILENAME

Explicitly specify an OCIO configuration file

--colorconvert IN OUT

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, scene_linear, default, rgb, RGB, lin_srgb, sRGB, Rec709)


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


Use PRMan-safe settings for tile size, planarconfig, and metadata.


Use OIIO-optimized settings for tile size, planarconfig, metadata.


07 February 2024 OpenImageIO