24 bit output with rgba about chunky_png HOT 6 CLOSED

I'm not quite sure what you mean. Do you mean 24 bit per channel? Or do you mean 24 bit in total, so 4 channels x 6 bits?
As far as I know the PNG standard only defines 1, 2, 4, 8 and 16 bits per channel (which are all supported in ChunkyPNG), so both options are not supported according to the spec.

Do you have an example image?

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they are asking for 24bit rbga instead of 24 bit index .. what ever that means

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for use in IE6

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Aha OK. This is already supported but you have to override the default color mode detection. ChunkyPNG will automatically choose the color mode that generates the smalles image, so it'll pick indexed if there's less than 256 colors in use.

You can override it like this:
image.to_blob(:color_mode => ChunkyPNG::COLOR_TRUECOLOR)

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what i did was make a config option in compass for people to set these themselves

Compass/compass@db74d8b

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Sweet!

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