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Changes since previous OS4Depot release: - Updated with libpng 1.6.38. - Disabled asynchronous i/o when loading images via OS4 vector-port filesystems, removing overhead to improve performance (still enabled for older filesystems such as FFS2 and SFS). - Fixed bug in instance memory allocation on OS4. FEATURES - Supports both normal and interlaced PNG files - Gamma correction options allow the output image to be changed to suit your monitor/environment - Alpha channel handling can be configured to output RGBA bitmaps, or RGB bitmaps either by combining the alpha information internally using a configurable background colour or simply stripping it - Highly optimized datatype dispatch engine, and fast PNG decoder, resulting in a very efficient, compact and quick PNG datatype - Asynchronous file i/o and double buffering techniques (WarpOS only), which speeds up image decoding - Optimized versions for 68020, 030, 040 and 060 - PowerPC support with native OS4, WarpOS and MorphOS versions - Alter the pen allocation precision when images are remapped to an 8-bit display - Specific support for the AmigaOS picture.datatype v44+, when available - The dithering feature of the AmigaOS picture.datatype v44+ can be configured to your liking (e.g. disabled for 15/16-bit displays) - Based on libpng 1.6.37 and zlib 1.2.11 REQUIREMENTS WarpPNG is a PNG datatype which utilizes and requires the following: - Kickstart 3.0 or higher - picture.datatype v43 or higher (i.e. either of the ones supplied with AmigaOS 3.5+, P96 or CGraphX) 68k version - 68020 processor or higher (optimized versions included) WarpOS version - PPC accelerator card + 68040/060 - WarpUp Release 5.0 or higher OS4 version - PPC accelerator card / AmigaOne / SAM - AmigaOS 4.0 or higher MorphOS version - PPC accelerator card / Pegasos / Efika - MorphOS 1.4 or higher Note that a graphics card is not necessary.
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