Flex FOV (Cleanroom Port)

作者：swankydenizen

Intelligent defaults for displaying any FOV

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介绍

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FlexFOV (Cleanroom Port)

Renders Minecraft at up to 360 degrees of horizontal field of view. The world is captured onto
the 6 faces of a cube and reprojected through a fragment shader, so the picture stays usable well
past the ~110° where vanilla’s rectilinear projection falls apart.

This is a port of FlexFOV by shaunlebron — itself a fork
of 18107’s Render360 — to Cleanroom Loader on Minecraft
1.12.2. The render math and the call sites are unchanged from upstream; what’s new is the mechanism
reaching them (see How it works).

Requirements

Minecraft 1.12.2 on Cleanroom Loader
A GPU/driver with GLSL fragment shader support
Client-side only. The mod does nothing on a dedicated server, and servers you join don’t need
it installed.

Configuration

Edit config/flexfovclrmport.cfg, or change the options in-game under Mods → FlexFOV → Config.
Changes made in-game apply immediately.

Option	Type	Default	What it does
Mod Enabled	boolean	`true`	The mod’s on/off switch. When off, the world is drawn by unmodified vanilla rendering and every other option here has no effect.
Render Mode	`FLEX` / `PANINI` / `STEREOGRAPHIC` / `MERCATOR`	`FLEX`	Which projection the world is reprojected through. No effect while Mod Enabled is off.
FOV	0–360	`180`	Horizontal field of view, in degrees.
Quality	0.1–5.0	`1.0`	Resolution multiplier for the off-screen capture. Each of the 6 faces is rendered at (screen height × quality) squared, so cost scales with the square of this value — above 1.0 gets expensive fast.
Rubix Debug	boolean	`false`	Tints each captured cube face a distinct colour and overlays a grid, to show where the seams are.
Split Compare	boolean	`false`	Splits the screen to compare the hybrid, panini and stereographic projections side by side.

Mod Enabled and Render Mode are different switches

Mod Enabled chooses how the world gets to the screen: off means the vanilla render path, which
is bit-identical to no mod at all. Render Mode only chooses a projection within the wide-angle
path, and does nothing at all while Mod Enabled is off.

What the render modes do

FLEX picks its projection from the FOV alone:

FOV	Projection
below 90	rectilinear (what vanilla does)
90–160	blending into a panini/stereographic hybrid
160–300	blending into mercator
300–360	mercator

PANINI, STEREOGRAPHIC and MERCATOR pin one projection at every FOV instead. Panini and
stereographic degenerate as the FOV approaches 360; mercator is the one that holds up there.