QJ.net Game Discussion - PSP, Xbox, Wii, PS3, PSP Homebrew, and PSP Guides

**slicer4ever** · 08-04-2008, 04:35 PM

ok im not asking for a gfx's artist, but i'm asking for help from someone who understands the png format, if you don't please leave right now, ok on to the post:

now than i've gotten fed up with libpng(overly complicated for what it should accomplish imo), no i'm not going to use pnglite(no support for palleted images), so i'm building my own, scaled back version, which is initially only going to have support for the main chunks, however i'm simple looking for someone who knows how to do the following:

create an RGBA truecolor image(preferable a 4x4 and not something huge otherwise it's pretty hard to check each rgba pixel, with an bitdepth of 8) in which one of the scanlines has a filter type 3(Average) and can send it to me, that's all i need atm and anyone who can aid me is much appreciated, i'll post if i can ever manage to create my own, and thanks to all who help

**Raphael** · 08-05-2008, 09:45 AM

Here are two small .png's with 4x4 RGB 8bit format. The first one (test.png - hand generated with a hex editor and a small deflate helper app) uses only filter types 1 and 3 and the second one (test2.png - generated from PS and stripped from unnecessary chunks with hex editor) uses filter types 1 and 4.

**slicer4ever** · 08-05-2008, 10:58 AM

thank you so much Raphael, much appreciated=-)

08-04-2008, 04:35 PM	#1
slicer4ever Developer Join Date: Jul 2005 Location: everywhere Posts: 3,357 Trader Feedback: 0	[Help]Png Image ok im not asking for a gfx's artist, but i'm asking for help from someone who understands the png format, if you don't please leave right now, ok on to the post: now than i've gotten fed up with libpng(overly complicated for what it should accomplish imo), no i'm not going to use pnglite(no support for palleted images), so i'm building my own, scaled back version, which is initially only going to have support for the main chunks, however i'm simple looking for someone who knows how to do the following: create an RGBA truecolor image(preferable a 4x4 and not something huge otherwise it's pretty hard to check each rgba pixel, with an bitdepth of 8) in which one of the scanlines has a filter type 3(Average) and can send it to me, that's all i need atm and anyone who can aid me is much appreciated, i'll post if i can ever manage to create my own, and thanks to all who help __________________ 1. Failed....again... 2. http://slicer.gibbocool.com/ stay updated on all my projects

08-05-2008, 09:45 AM	#2
Raphael Developer Join Date: Jan 2006 Location: Germany Posts: 919 Trader Feedback: 0	Here are two small .png's with 4x4 RGB 8bit format. The first one (test.png - hand generated with a hex editor and a small deflate helper app) uses only filter types 1 and 3 and the second one (test2.png - generated from PS and stripped from unnecessary chunks with hex editor) uses filter types 1 and 4. Attached Images __________________ Raphs board rules #31: Excessive use of punctuation is either a sign of a lesser ego or a small mind. Avoid it if you don't want to look like a total moron. Raphs board rules #17: When you need to ask whether you are capable of doing something, you are not. Raphs board rules #2: Exploits aren't found by changing version numbers, blindly merging data into a file or turning your PSP upside down. Raphs board rules #1: If you have no clue how exploits work, don't come up with ideas about them.

08-05-2008, 10:58 AM	#3
slicer4ever Developer Join Date: Jul 2005 Location: everywhere Posts: 3,357 Trader Feedback: 0	thank you so much Raphael, much appreciated=-) __________________ 1. Failed....again... 2. http://slicer.gibbocool.com/ stay updated on all my projects

QJ.net Game Discussion - PSP, Xbox, Wii, PS3, PSP Homebrew, and PSP Guides

[Help]Png Image