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Plananarama =========== The Plananarama plugin allows Hollywood to run on planar (palette-based) screens. This finally makes it possible to run Hollywood scripts on plain AGA or ECS systems with no graphics board installed - for the first time since Hollywood 1.93 (released in March 2005)! Starting with version 2.0, Hollywood required CyberGraphX or Picasso96 to run. Since then, many people have asked for a revival of Hollywood's planar engine, so here it is, a real blast from the past! Thanks to Hollywood 6's greatly extended plugin API this feature could be implemented completely in plugin space. Once Plananarama is installed, all Hollywood scripts will magically run on palette screens again! All resolutions are supported - from 8-bit LowRes to 1-bit productivity SuperHighRes Interlace. This plugin was first created during the development of Hollywood 6.0 a proof-of-concept for the flexibility of Hollywood 6.0's powerful display and bitmap adapters. This plugin completely replaces Hollywood's default display adapter and installs a custom one that is able to run on planar screens. Requirements ============ This plugin requires at least Hollywood 6.0 since it uses the display and bitmap adapter APIs introduced with Hollywood 6.0. Additionally, there are the following requirements: - guigfx.library - render.library (*) - FBlit (**) - some fast memory for FBlit (*) Note that render.library is available in two flavours: The latest version is v40.8. It is a C port of the original render.library which was written in 68k assembler. The assembler version of render.library is much faster than the C version which is why you might want to use the assembler version instead. The latest assembler version of render.library is v31.0. Plananarama doesn't require v40, you can also use v31 if you care about performance. (**) FBlit is not actually required but highly recommended because otherwise your chip memory will be gone in no time and Hollywood will run out of memory. So make sure you install FBlit first and you add Hollywood to its "Include" list in the "FAllocBitMap" tab. If Hollywood is included in this list, it will be able to place graphics in fast memory which is absolutely needed since 2 MB of chip memory certainly won't be enough for Hollywood. Using FBlit also has the advantage that Hollywood can use the CPU for blitting which is much faster than the blitter on higher 68k CPUs or WinUAE anyway. Usage ===== There are several ways to use this plugin: You can either activate the plugin for a script by ()REQUIRE-ing it. To do this, simply put the following preprocessor command at the top of your script: ()REQUIRE "Plananarama" Or you can use the REQUIREPLUGINS argument from the command line or set the tooltype of the very same name. This is the preferred method to use if you don't want to modify the scripts you want to run with Plananarama, maybe because they should only use Plananarama on AmigaOS 3 systems but on other systems they should run without it. Here is an example: 1> Hollywood Hollywood:Examples/Hollywood/3DText/3DText.hws -requireplugins plananarama You can also use the REQUIREPLUGINS argument in the tooltypes. The tooltype version would be: REQUIREPLUGINS=Plananarama When using the Hollywood GUI, you can route every Hollywood script launched from the GUI through the Plananarama plugin, by going to the "Prefs/Hollywood..." menu and entering "-requireplugins plananarama" in the "Additional interpreter arguments" text gadget. Options ======= Plananarama supports several options which can be passed to ()REQUIRE or to the REQUIRETAGS arguments. See the Hollywood documentation to learn how to pass parameters to ()REQUIRE and REQUIRETAGS. The following options are currently available: DitherMode: This can be "None", "FS" (the default), "Random", or "Edd". Here is a description of the different dither modes: "None" : No dithering at all. "FS" : Floyd-Steinberg dithering. This is the default. "Random": Random dithering. This mode is significantly slower than Floyd-Steinberg dithering. "Edd" : EDD dithering. This mode is faster than Floyd-Steinberg dithering. DitherAmount: Set the dither amount. This must be between 0 and 255. Currently this value is of any use only for the "Random" dither mode. Defaults to 40. AutoDither: Enable automatic dithering. If set to TRUE, dithering is automatically activated for drawing a particular picture to a particular environment, when the loss of color information would exceed a certain threshold (see below). Defaults to TRUE. DitherThreshold: The threshold for automatic dithering. The lower, the earlier automatic dithering is activated. Useful thresholds range between 10 and 10000. Refer to render.library/RGBArrayDiversityA() for further details. Better you do not use this tag unless you have a good reason to. Let the user customize it with the environment variable AUTODITHERTHRESHOLD. Defaults to 250. Precision: Set the precision for pen allocations. This can be "Exact", "Image" (the default), "Icon", or "GUI". See graphics.library/ObtainBestPenA() for details. Note that the default precision suffices for almost every application. Pens are obtained in an extremely effective way. You get excellent results even with lower precisions. Commodore's idea with ObtainBestPenA() was to create a fair and effective pen-sharing mechanism, and Plananarama behaves in perfect accordance to this intention. Never use insane patches for ObtainBestPenA(). Troubleshooting =============== a) Plananarama says "Cannot open guigfx.library!" but I have guigfx.library installed: guigfx.library requires render.library and will fail to open in case render.library isn't present so make sure you have render.library as well. If you do, make sure you have the right version of render.library. Some require an FPU and will fail to open if no FPU is present. b) My system crashes with a 8000000B software failure: You are using a version of render.library that needs an FPU on a system without an FPU. Make sure to use the appropriate version for your system because some versions of render.library don't check if an FPU is present, they will just crash if there is none. c) I'm getting an "Out of memory!" error but I have lots of fast memory. First make sure you have installed FBlit. Then make sure that you've configured FBlit correctly. You have to add Hollywood to FBlit's "Include" list in the "FAllocBitMap" tab. If Hollywood is included in this list, it will be able to place graphics in fast memory which is absolutely needed since 2 MB of chip memory certainly won't be enough for Hollywood. So make sure you configure FBlit correctly. d) Plananarama is very slow: If Plananarama performs poorly on your system then the reason might be that your script is drawing many images with alpha channel graphics, e.g. anti-aliased text/shapes or images with variable levels of transparency. These things do not make much sense on palette-based screens and they are very, very expensive on the CPU because Plananarama needs to remap these images from true colour chunky pixels to planar graphics all the time. Thus, if you care about performance you should not use any alpha channel images and transparency should be limited to monochrome transparency (i.e. visible and invisible pixels). The best idea is to use a fixed set of prerendered graphics. When just drawing prerendered graphics with no changes concerning the colors, Plananarama should perform quite well on planar screens and scripts should also be usable on slower systems, though you still need a fast CPU and some fast memory of course. History ======= Version 1.0: (10-Jan-16) - First release Future ====== More optimizations. Bugs ==== Please report any bugs or issues via the Hollywood forums at http://forums.hollywood-mal.com/ Copyright ========= This plugin is (C) Copyright 2014-2016 by Andreas Falkenhahn <andreas()airsoftsoftwair.de> Refer to the COPYING file in this package for conditions concerning distribution of this plugin. This plugin uses guigfx.library and render.library by Timm S. Müller. Parts of this document are based on the documentation of guigfx.library written by Timm S. Müller. For support and more plugins please visit http://www.hollywood-mal.com/.
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