File:PNG transparency demonstration 1.png

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Summary

DescriptionPNG transparency demonstration 1.png	English: PNG transparency demonstration PNG encoded in 32 bits per pixel RGBA
Date	12 July 2005, 22 April 2009, 7 January 2019
Source	Own work: Rendered in POV-Ray.
Author	POV-Ray source code. 2005 version by Daniel G.. 2009 version by Ed g2s. 2019 version by CyberShadow.
Other versions	See also: File:PNG transparency demonstration 2.png and File:PNG transparency demonstration 3.png.

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File history

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	Date/Time	Dimensions	User	Comment
current	15:57, 8 July 2024	800 × 600 (219 KB)	Obscure2020	I went back to the last version by CyberShadow, and then ran that through OxiPNG and then ZopfliPNG. Even better optimization than Avayak or Rhapsody Scarlet managed.
	22:46, 1 July 2021	800 × 600 (222 KB)	Rhapsody Scarlet	further optimized
	19:11, 26 September 2020	800 × 600 (223 KB)	Avayak	optimized
	23:01, 7 January 2019	800 × 600 (375 KB)	CyberShadow	Re-render and calculate proper transparency. POV-Ray seems to ignore the effects of transparency for translucent objects when calculating the output image alpha channel. Even though the dice are semi-transparent, this is not represented in the resulting PNG image. Rectify this by performing two renders (with a fully-black and fully-white background), then calculate the correct alpha value with a separate tool, so that the dice appear properly translucent depending on the background the imag...
	03:11, 6 January 2019	800 × 600 (213 KB)	CyberShadow	Reverted to version as of 17:40, 16 January 2016 (UTC) - the "compression" was destructive and overwrote some of the alpha channel (try viewing on a black background, e.g. in Chromium!)
	19:49, 25 February 2017	800 × 600 (175 KB)	Gnash	Optimized
	12:27, 22 November 2016	800 × 600 (197 KB)	Pandakekok9	More filesize reduction using IrfanView, with compression level at maximum (9) and transparency saved in alpha channel. No PNGOUT used.
	17:40, 16 January 2016	800 × 600 (213 KB)	Kingofthedead	Reverted to version as of 10:15, 24 December 2014 (UTC) (oops!!)
	17:39, 16 January 2016	800 × 600 (216 KB)	Kingofthedead	Reverted to version as of 05:42, 6 December 2012 (UTC)
	10:15, 24 December 2014	800 × 600 (213 KB)	Rhapsody Scarlet	pngout good, zopflipng better.