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Document `Image.FORMAT_R8` stores in alpha channel instead in GLES2

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Hugo Locurcio 2021-10-25 16:52:58 +02:00
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doc/classes/Image.xml
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@ -434,6 +434,7 @@
</constant>
<constant name="FORMAT_R8" value="2" enum="Format">
OpenGL texture format [code]RED[/code] with a single component and a bitdepth of 8.
[b]Note:[/b] When using the GLES2 backend, this uses the alpha channel instead of the red channel for storage.
</constant>
<constant name="FORMAT_RG8" value="3" enum="Format">
OpenGL texture format [code]RG[/code] with two components and a bitdepth of 8 for each.