Rendering & Settings

Live display toggles, feature flags, FPS, and the HUD-less "clean frame" used by the edge-glow shader. All live in emscripten_api.c; setters are callable while the game runs.

Source: core/wasm-build/emscripten_api.c · Bridge: lib/game/live-settings.ts, lib/game/bridge/render.ts, lib/game/bridge/ui-state.ts, lib/game/fps.ts

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Feature & PPU flags

Function	Signature	Effect
WasmSetFeatures	void(uint32_t features)	Sets g_wanted_zelda_features, the enhancement bitmask covering widescreen, sprite limits, and similar flags.
WasmGetFeatures	uint32_t(void)	Current feature bitmask.
WasmSetPpuRenderFlags	void(int flags)	Sets PPU render flags.
WasmGetPpuRenderFlags	int(void)	Current PPU render flags.

HUD & menu

Function	Signature	Effect
WasmSetHudHidden	void(int hidden)	Hides/shows the native HUD (HUD_HIDE_ALL); forces a HUD refresh on show. Used when the React HUD overlay takes over.
WasmSetPauseHidden	void(int hidden)	Hides/shows the native pause menu; immediately blanks pause VRAM if the menu is already up.
WasmGetMenuState	int(void)	In-game menu phase: 0 gameplay, 1 opening, 2 open/browsing, 3 closing.

Performance

Function	Signature	Effect
WasmGetFps	int(void)	Current measured FPS (g_curr_fps).
WasmSetDisplayPerf	void(int enable)	Toggle FPS readout in the window title.

Clean frame (edge-glow source)

A HUD-less, sprite-less render of the current frame, used by the edge-glow post-processing. Render first, then read the width, height, and RGBA buffer.

Function	Signature	Returns
WasmRenderCleanFrame	int(void)	Renders with NoBG3 + NoSprites into a static RGBA buffer; returns its HEAPU8 pointer (or 0 if the frame exceeds the max buffer).
WasmGetCleanFrameWidth	int(void)	Width in px of the last clean frame.
WasmGetCleanFrameHeight	int(void)	Height in px of the last clean frame.

Buffer is sized for up to 856×484 RGBA (render_scale-dependent). Read it the same frame you render it.