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Add "sendpacked" and "loadpacked" commands to GPU

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These allow converting images to/from string representations that are much easier and faster for Luacontrollers to store and handle.
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cheapie
2021-03-05 17:09:39 -06:00
parent 7446451b1b
commit 4a3c741fb3
2 changed files with 119 additions and 4 deletions
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docs/gpu.txt
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@@ -147,3 +147,26 @@ y1 [integer 1-64]: The Y position of the start of the line.
y2 [integer 1-64]: The Y position of the end of the line.
color [hex color, default "000000"]: The nominal color of the line (may not be the color of every pixel, see the "antialias" setting)
antialias [boolean, default false]: Whether to apply a (very) crude smoothing algorithm to the line to reduce jagged edges at the expense of making the line slightly blurry.
Command: sendpacked
-------------------
Converts the image in a buffer into a string representation that can be loaded again later with the "loadpacked" command.
The result uses 4 bytes per pixel and consists entirely of printable characters (A-Z, a-z, 0-9, +, and /).
Parameters:
buffer [integer 0-7]: The buffer to convert.
channel [string]: The digilines channel to send the packed image on.
Command: loadpacked
-------------------
Load a string representation of an image (created by the "sendpacked" command) back into a buffer.
Parameters:
buffer [integer 0-7]: The buffer to load the image into.
x [integer 1-64]: The X position of the left side of the image.
y [integer 1-64]: The Y position of the top of the image.
xsize [integer 1-64]: The width of the image. Must be the same as the original image or the image will be severely distorted.
ysize [integer 1-64]: The height of the image. Should be the same as the original image.
data [string]: The packed image to load.