Mode 13h: MS-DOSify!

Changelog – Version 2.0.0

• Added: A fixed 256-color palette, now the default: 16 Minecraft hues in 16 shades each, like a DOS game's own palette.
• Added: The stock VGA palette, as an option.
• Added: Colormap lighting (default on): textures use only palette colors and shading steps down each color's ramp, like Doom and Quake.
• Changed: Texture mapping defaults to Quake-style subdivision: perspective-correct every 16 pixels and linear in between, a subtle wobble instead of heavy warping. Full affine and perspective-correct are options (Texture Mapping).
• Changed: Textures pick their mipmap for the 320×200 output, so distant surfaces shimmer much less.
• Changed: Rain and particles use the generic textured program; rain now wobbles like other geometry.
• Changed: Fog and texture mapping take the pixel position from the vertex shader instead of reconstructing it per pixel. Same look, less work.
• Changed: Viewmodel Dithering is now a strength slider; 0 turns it off.
• Changed: The option menu is trimmed (see Removed). Saved settings for removed or renamed options reset to their defaults.
• Fixed: Surfaces seen at a very steep angle no longer smear, or show other blocks' textures inside them or as lines along their edges, with subdivided mapping.
• Fixed: 1.21.x flora (bush, eyeblossoms, dry grass…) billboards again; it broke in 1.0.3.
• Fixed: Copper Age chains and lanterns now actually billboard.
• Fixed: Stained glass, ice and other translucents no longer darken at night; only water does.
• Removed: Palette Mode and Bypass options, replaced by Palette (Off, Ramp, VGA, RGB332, 6x6x6).
• Removed: Affine Mapping, Near Distance and Fade Range options (replaced by Texture Mapping).
• Removed: Fog Tuning toggle, Start/End Offset and Minimum Range options. Fog keeps its Start, End and Density scales; 1.00 is vanilla.
• Removed: Dither Strength option (merged into Viewmodel Dithering).
• Removed: OptiFine from the listed loaders. It was never supported.
• Removed: Programs that duplicated their Iris fallback, and an unused one. No visual change.

— HandLock_