Overwrite the entire VRAM from a CPU-side `&[u16]` slice in row-major order. Length must be exactly `1024 * 512 = 524288`.

Return options with a different culling mode.

Return options using the render layer implied by `material`.

Clock one byte and, when `wait_ack`, block for the card's `/ACK` pulse so the next byte is not clocked early. Returns the received byte.

Plug a digital controller into port 1 so homebrew / commercial games can poll for button state. Convenience: most single-player games use port 1 only.

Build the portal-visible room set from `current_room`.

Apply the 44-bit signed overflow check, returning the value SIGN-EXTENDED from bit 43 (the hardware accumulator width). Sets the appropriate `FLAG` bi

Transform a world-space vertex into camera-space.

Get a node.

Normalize legacy or hand-authored project data after load.

Transform and project a world-space quad. Returns `None` if any corner falls behind the projection near plane.

Upload raw byte-stream pixel data, interpreted as halfwords in little-endian order. Same semantics as [`upload_16bpp`] but accepts a `&[u8]` -- useful

Encode as the high-16-bits of a textured-primitive's first UV word. Bits: ```text bits 0..5 : CLUT X / 16 bits 6..14 : CLUT Y ```

Translate a world-cell coordinate to its array index, or `None` if the cell isn't currently allocated.

Raise interrupt `source` -- set its bit in `I_STAT` regardless of the mask. Matches real PSX hardware and PCSX-Redux's `setIRQ` (an unconditional `ist

Encode as the low-16-bits of a textured-primitive UV word (the "tpage" embedded field). Same byte layout as GP0(E1h)'s low 10 bits minus display-disab

Plug a device into port 1 (typical for "player 1" games).

Number of floors in this room (1 for a single-floor room). Floor 0 is this base grid; floor `i` is `floors_above[i - 1]`.

Borrow the IRQ controller immutably for diagnostics.

Load the rotation matrix into the GTE's RT control registers (0..=4).

Load the translation vector (TR, control 5..=7).

Matrix × matrix, with 1.3.12 fixed-point scaling applied so the output stays in 1.3.12. Saturates each cell to `i16` range -- rotation compositions st

Per-source count of `raise()` calls. Diagnostic.

Engine units per sector.

Rebuild categories with a fresh "Run"/"Pause" label. Called when `AppState.running` flips.

Advance the motor by one frame.

Return options with a different scalar depth policy.

Attach / replace the digital pad on this port.

Advance the cycle counter without running peripheral schedulers. Used by load/store opcodes to charge the per-data-access cycle (Redux's `m_regs.cycle

GTE command-word builder: COP2 functions leave the high bits alone -- only sf/lm/mx/vx/cv/opcode matter. Keeps test instructions readable next to thei

Collision-side facade, see [`RoomCollision`].

Produce a row-major `RGBA8` buffer of the current display area. In 16-bit mode the 5-bit channels are bit-replicated to 8-bit; in 24-bit mode the pack

Walk every Model resource and ensure its mesh + every clip have entries. Removes entries for clips / models that no longer exist (signature mismatch o

The room this selection belongs to.

Saturate a value to the IR1/IR2/IR3 range and store it. Sets the corresponding `FLAG` bit on saturation.

Cycle-aware 8-bit write dispatch.

Apply the scale to one signed coordinate.

Default authored UI font scale.

World-space integer position of `corner` in the room described by `grid`. Returns `None` if the addressed face no longer exists (cell out of bounds, g

Halfwords per row at the given depth and width. Rows are padded up to a full halfword -- a 5-texel-wide 4bpp texture still uses 2 halfwords per row.

True when a primitive using this material should set its semi-transparent command bit.

Load a full multitrack disc model from a CUE sheet. Track timing comes from the CUE; per-track bytes come from the referenced files.

Build and `Ready` a key in one step.

Resolve a `psxt`/`psxanim`/`psxmdl` path against an optional project root. Mirrors the lookup order used by other resources (absolute → project-relati

Push a display-start command for the buffer we're NOT currently drawing to -- flipping the display at the next VBlank.

Serialize this project to human-readable RON.

Write a 32-bit word. `phys` must be inside [`Dma::BASE`]..[`Dma::END`]. Returns `true` when a DICR write transitions the DMA master IRQ flag from cle

Follow the link chain from a first-block entry.

Clear the rolling window.