amiga-bootcamp/08_graphics

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Graphics Subsystem — Overview

The Amiga graphics system is built on custom DMA-driven hardware (Agnus/Alice + Denise/Lisa) managed through graphics.library. It supports planar bitmaps, hardware sprites, a Copper display coprocessor, and a Blitter for fast 2D operations. Three chipset generations (OCS → ECS → AGA) expanded resolution, color depth, and bandwidth.

Section Index

File	Description
gfx_base.md	GfxBase structure, chipset detection (OCS/ECS/AGA), PAL/NTSC, display pipeline (MakeVPort/MrgCop/LoadView), blitter queue
bitmap.md	BitMap structure, planar layout, allocation
display_modes.md	Full chipset comparison, ModeID selection flowchart, CRT vs flat-panel, interlace/progressive tradeoffs, named antipatterns, FPGA/MiSTer impact, historical context, modern analogies, FAQ
ham_ehb_modes.md	HAM6/HAM8 encoding pipeline, EHB half-brite, fringing, palette programming, FPGA decoder logic
copper.md	Copper coprocessor, instruction format, UCopList
copper_programming.md	Copper deep dive: architecture, copper list construction, gradient and raster effects
blitter.md	Blitter DMA engine, minterms, BltBitMap
blitter_programming.md	Blitter deep dive: minterms, cookie-cut masking, line draw, fill mode
sprites.md	Hardware sprites: DMA engine, data format, attached 15-color sprites, multiplexing, AGA enhancements, priority control
rastport.md	RastPort drawing context: draw modes, patterns, layer clipping, text pipeline, blitter minterms
views.md	View + ViewPort pipeline: 3-stage Mermaid diagram, ViewPort chaining (split screens), ColorMap/LoadRGB4, named antipatterns, Copper vs Views decision flowchart, modern GPU analogies
text_fonts.md	TextFont bitmap layout, baseline rendering, algorithmic styles, AvailFonts enumeration
pixel_conversion.md	Chunky ↔ Planar conversion deep dive: naive, merge/butterfly (Kalms), Copper Chunky, Akiko hardware, Blitter-assisted, RTG bypass, SoA/AoS theory, GPU swizzle modern parallels
animation.md	GEL system deep dive: BOBs, VSprites, AnimObs, hardware foundation (Blitter/Copper/Sprite interaction), collision detection, double buffering, performance tuning
rtg_programming.md	Retargetable Graphics (CyberGraphX/Picasso96): Planar vs Chunky, LockBitMapTags, Pixel Formats, Direct VRAM rendering