Alpha and CMYK sprites
3 posts, 3 voices
Andrew Hodgkinson (6)
465 posts
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Richard Spencer (69)
1 post
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I'd like to see OS level support for the new Select sprite formats (and in !Paint too). In particular a new CMYK format could be used by the PDumper module to provide a CMYK strip type, obviating the problem that everything gets reduced to RGB. How involved is this and what level of hardware abstraction is required? Clearly reading from the screen is slow but Tinct manages it successfully on Iyonix hardware. Would any modules apart from SpriteExt need to be changed? Another possibility is colour profiling where RGB <-> CMYK conversion is abstracted via a non-linear lookup table to give more accurate screen rendition of CMYK images, and auto-conversion of RGB values when printing to a CMYK strip. A call to any assembler wizards out there! |
Garry Taylor (57)
3 posts
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I second that, support for alpha-blended graphics was the tipping point for me choosing an A9Home over an Iyonix. That turned out to be a mistake, and I sold it, but alpha-blended graphics could not only make RISC OS look nicer, it's essential to have in apps too. Garry > I'd like to see OS level support for the new Select sprite formats (and > in !Paint too). > > > In particular a new CMYK format could be used by the PDumper module to > provide a CMYK strip type, obviating the problem that everything gets > reduced to RGB. > > > How involved is this and what level of hardware abstraction is required? > Clearly reading from the screen is slow but Tinct manages it > successfully on Iyonix hardware. Would any modules apart from SpriteExt > need to be changed? > > > Another possibility is colour profiling where RGB <-> CMYK conversion is > abstracted via a non-linear lookup table to give more accurate screen > rendition of CMYK images, and auto-conversion of RGB values when > printing to a CMYK strip. > > > A call to any assembler wizards out there! |
