nanogui: Alpha channel whit nano-x 0.91
Subject:
Re: [nanogui] Alpha channel whit nano-x 0.91
From:
"Greg Haerr" ####@####.####
Date:
8 May 2006 17:09:03 +0100
Message-Id: <0e5d01c672b9$b522f0c0$6401a8c0@winXP>
: In order to design the image .PNG whit transparency and alpha channel.
: unfortunately the result is one full image without transparencies.
: How I can use the alpha channel with NANO-X 0.91?
You'll need some slight modifications to the PNG decoder
in engine/image_png.c. When the PNG has an alpha channel,
you'll need the code to do the following (but only in that case):
1. Set pimage->compression is set to MWIMAGE_RGB |
MWIMAGE_ALPHA_CHANNEL.
2. Don't call the png_set_strip_alpha(state) function.
This should result in a ARGB-code image file.
Regards,
Greg
