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| author | hecks <42101236+hecktest@users.noreply.github.com> | 2021-07-29 05:10:10 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-29 05:10:10 +0200 |
| commit | 80d12dbedb67191a5eb3e4f3c36b04baed1f8afb (patch) | |
| tree | ca8346be45852e0c08f444f8a8eb6c0cdfd37e39 /doc/lua_api.txt | |
| parent | 2866918f3293c486609ff46ad0bfa5ce833aaaf2 (diff) | |
| download | minetest-80d12dbedb67191a5eb3e4f3c36b04baed1f8afb.tar.gz minetest-80d12dbedb67191a5eb3e4f3c36b04baed1f8afb.tar.bz2 minetest-80d12dbedb67191a5eb3e4f3c36b04baed1f8afb.zip | |
Add a simple PNG image encoder with Lua API (#11485)
* Add a simple PNG image encoder with Lua API
Add ColorSpec to RGBA converter
Make a safety wrapper for the encoder
Create devtest examples
Co-authored-by: hecktest <>
Co-authored-by: sfan5 <sfan5@live.de>
Diffstat (limited to 'doc/lua_api.txt')
| -rw-r--r-- | doc/lua_api.txt | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt index 7ee9a3f2c..21e34b1ec 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -4611,6 +4611,23 @@ Utilities * `minetest.colorspec_to_colorstring(colorspec)`: Converts a ColorSpec to a ColorString. If the ColorSpec is invalid, returns `nil`. * `colorspec`: The ColorSpec to convert +* `minetest.colorspec_to_bytes(colorspec)`: Converts a ColorSpec to a raw + string of four bytes in an RGBA layout, returned as a string. + * `colorspec`: The ColorSpec to convert +* `minetest.encode_png(width, height, data, [compression])`: Encode a PNG + image and return it in string form. + * `width`: Width of the image + * `height`: Height of the image + * `data`: Image data, one of: + * array table of ColorSpec, length must be width*height + * string with raw RGBA pixels, length must be width*height*4 + * `compression`: Optional zlib compression level, number in range 0 to 9. + The data is one-dimensional, starting in the upper left corner of the image + and laid out in scanlines going from left to right, then top to bottom. + Please note that it's not safe to use string.char to generate raw data, + use `colorspec_to_bytes` to generate raw RGBA values in a predictable way. + The resulting PNG image is always 32-bit. Palettes are not supported at the moment. + You may use this to procedurally generate textures during server init. Logging ------- @@ -7631,7 +7648,7 @@ Used by `minetest.register_node`. leveled_max = 127, -- Maximum value for `leveled` (0-127), enforced in -- `minetest.set_node_level` and `minetest.add_node_level`. - -- Values above 124 might causes collision detection issues. + -- Values above 124 might causes collision detection issues. liquid_range = 8, -- Maximum distance that flowing liquid nodes can spread around |