SRL::VDP2::RBG0 Class Reference

Detailed Description

RBG0 interface.

Rotating Background Scroll 0: -Available color depths: Paletted16, Paletted256, RBG555 -Available modes: Tilemap, Bitmap -Available features: Scrolling, Scaling, Rotation, -Coefficient table allows per line and per pixel scaling to simulate perspective

#include <srl_vdp2.hpp>

Inheritance diagram for SRL::VDP2::RBG0:

Static Public Member Functions
static void *	GetCellAddress ()
	Gets the starting address in VRAM of Cel data allocated to this scroll.
static uint32_t	GetCellOffset (SRL::Tilemap::TilemapInfo &tile, void *cellAddress)
	Compute the offset that must be added to map data When Corresponding Cel Data does not start on a VRAM bank boundary.
static void *	GetMapAddress ()
	Gets the starting address in VRAM of Map data allocated to this scroll.
static void *	GetPageAddress (uint8_t index)
	returns the VRAM Address of the specified page number in a scroll's Page Table or nullptr if the requested page is outside of allocated Map Bounds
static uint32_t	GetPalOffset (int8_t paletteID=-1)
	Gets the Pallet Bank That must be included in Map Data to Reference a Palette in CRAM.
static void *	GetPlaneAddress (uint8_t index)
	Gets the VRAM Address of the specified plane in a scroll's Page Table (units of 1x1, 2x1, or 2x2 pages)
static void	Init (SRL::Tilemap::TilemapInfo &info)
	Initializes the ScrollScreen's tilemap specifications.
static void	LoadTilemap (SRL::Tilemap::ITilemap &tilemap)
	Loads Tilemap data to VRAM using ITilemap Interface and configures the Scroll Screen to use it.
static void	ScrollDisable ()
	Removes the Scroll Screen from VDP2 cycle pattern register to disable display.
static void	ScrollEnable ()
	Registers Scroll in VDP2 cycle pattern to enable display of this Scroll Screen.
static void *	SetCellAddress (void *address, int size)
	Manually Sets VRAM area for Cell Data (Advanced Use Cases)
static void	SetCurrentTransform ()
	Writes the current matrix transform to RBG0RA Rotation parameters to update its position and perspective.
static void *	SetMapAddress (void *Address, int Size)
	Manually Sets VRAM area for Map Data (Advanced Use Cases)
static void	SetMapLayout (uint8_t a, uint8_t b, uint8_t c, uint8_t d)
	Manually set the Plane layout of a Scroll Screen.
static void	SetOpacity (Math::Fxp opacity=1.0)
	Set the opacity of a scroll screen.
static void	SetPlanes (const uint8_t layout[4][4])
	Sets the plane of Tilemap Data to be displayed with 16 planes.
static void	SetPlanes (void *a, void *b, void *c, void *d)
	Sets the plane of Tilemap Data to be displayed.
static void	SetPriority (SRL::VDP2::Priority pr)
	Set the Display Priority of a Scroll Screen.
static void	SetRotationMode (VDP2::RotationMode mode, bool vblank=true)
	Select what type of rotation to use for the rotating scroll (Call before Loading RBG0)
static void	TransparentDisable ()
	Disable transparent pixels for a scroll screen.
static void	TransparentEnable ()
	Enable transparent pixels for a scroll screen.
static void	UseColorOffset (VDP2::OffsetChannel mode)
	Sets Which Color Offset that a scroll Screen should use.

Static Public Attributes
static void *	CellAddress
	VRAM Address to start of Cell data when displying Tilemap or Bitmap data when using bitmaps.
static int	CellAllocSize
static Tilemap::TilemapInfo	Info
	Tilemap config info for the ScrollScreen.
static void *	KtableAddress = (void*)(VDP2_VRAM_A0 - 1)
	VRAM Address of RBG0 Coefficient table.
static void *	MapAddress
	VRAM Address of ScrollScreen's Map data when displaying Tilemap.
static int	MapAllocSize
	Size of manually allocated VRAM for Map Data.
static constexpr int16_t	ScreenID
	SGL identifier for the ScrollScreen.
static constexpr uint16_t	ScreenON
	SGL flag for the ScrollScreen.
static CRAM::Palette	TilePalette
	CRAM Pallet for the ScrollScreen.