Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!masscomp!calvin!mark From: mark@calvin..westford.ccur.com (Mark Thompson) Newsgroups: comp.sys.amiga.graphics Subject: Re: So, does *anyone* make 1024x768 x256 for the A3000? Message-ID: <61934@masscomp.westford.ccur.com> Date: 25 Apr 91 20:29:42 GMT References: <15230@helios.TAMU.EDU> <1991Apr24.162452.22106@hubcap.clemson.edu> <15250@helios.TAMU.EDU> <1991Apr24.211729.19270@bronze.ucs.indiana.edu> Sender: news@masscomp.westford.ccur.com Reply-To: mark@calvin.westford.ccur.com (Mark Thompson) Organization: Concurrent Computer Corp. Westford MA. Lines: 32 In article frank@morpheus.UUCP (Frank McPherson) writes: >In article <1991Apr24.211729.19270@bronze.ucs.indiana.edu> tagreen@lothario.ucs.indiana.edu (Todd Green) writes: >>I think you mean 24 bits of information or a 24-bit plane, (i.e. 24 >>bits of information for each pixel) and not 24 planes per se. I think there is a little confusion here. In graphics systems, the frame buffer is organized as either a packed pixel array, planar array, or some hybrid of both (generally speaking). Regardless of the memory configuration, a 24bit graphics system has storage for 3 bytes of data per pixel. I do not understand why any distinction is being made between "24 planes" and "24-bit plane" and it occurs to me to be more of a case of confusion in terminology. I assume you are refering to the two different memory organizations mentioned above. If so, 24 plane and 24bit require the same amount of memory and produce the same output. The only difference is the way the data is accessed, each having its own advantages. >"24 bit graphics" does not imply 24 bit planes. I'm sure someone will >correct me if I'm wrong, but I think that with normal 24 bit graphics >boards, they allow you to choose 256 colours (8 bitplanes) from a >palatte of 16 million (approx. 2^24). "24 bit graphics" DOES imply 24bits per pixel of storage and not 8bits. Anyone who calls their 8bit board (256 color out of 16M) 24bit graphics is lying. However, with all the hype about 24bit graphics lately and all the over-zealous marketing going on, its easy to get confused. %~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~% % ` ' Mark Thompson CONCURRENT COMPUTER % % --==* RADIANT *==-- mark@westford.ccur.com Principal Graphics % % ' Image ` ...!uunet!masscomp!mark Hardware Architect % % Productions (508)392-2480 (603)424-1829 & General Nuisance % % % ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~