The optimised 32 bpp blitter with palette animation. More...

#include <32bpp_anim.hpp>

Inheritance diagram for Blitter_32bppAnim:

Public Member Functions
void	Draw (Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override
	Draw an image to the screen, given an amount of params defined above.

void	DrawColourMappingRect (void *dst, int width, int height, PaletteID pal) override
	Draw a colourtable to the screen. More...

void	SetPixel (void *video, int x, int y, uint8_t colour) override
	Draw a pixel with a given colour on the video-buffer. More...

void	DrawLine (void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8_t colour, int width, int dash) override
	Draw a line with a given colour. More...

void	DrawRect (void *video, int width, int height, uint8_t colour) override
	Make a single horizontal line in a single colour on the video-buffer. More...

void	CopyFromBuffer (void video, const void src, int width, int height) override
	Copy from a buffer to the screen. More...

void	CopyToBuffer (const void video, void dst, int width, int height) override
	Copy from the screen to a buffer. More...

void	ScrollBuffer (void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) override
	Scroll the videobuffer some 'x' and 'y' value. More...

size_t	BufferSize (uint width, uint height) override
	Calculate how much memory there is needed for an image of this size in the video-buffer. More...

void	PaletteAnimate (const Palette &palette) override
	Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'first_dirty' to 'first_dirty + count_dirty'. More...

Blitter::PaletteAnimation	UsePaletteAnimation () override
	Check if the blitter uses palette animation at all. More...

std::string_view	GetName () override
	Get the name of the blitter, the same as the Factory-instance returns.

void	PostResize () override
	Post resize event.

Colour	LookupColourInPalette (uint index)
	Look up the colour in the current palette.

int	ScreenToAnimOffset (const uint32_t *video)

template<BlitterMode mode>
void	Draw (const Blitter::BlitterParams *bp, ZoomLevel zoom)

Public Member Functions inherited from Blitter_32bppOptimized
void	Draw (Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override
	Draws a sprite to a (screen) buffer. More...

Sprite *	Encode (const SpriteLoader::SpriteCollection &sprite, SpriteAllocator &allocator) override
	Convert a sprite from the loader to our own format.

std::string_view	GetName () override
	Get the name of the blitter, the same as the Factory-instance returns.

template<BlitterMode mode, bool Tpal_to_rgb = false>
void	Draw (const Blitter::BlitterParams *bp, ZoomLevel zoom)
	Draws a sprite to a (screen) buffer. More...

Public Member Functions inherited from Blitter_32bppSimple
void	Draw (Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override
	Draw an image to the screen, given an amount of params defined above.

void	DrawColourMappingRect (void *dst, int width, int height, PaletteID pal) override
	Draw a colourtable to the screen. More...

Sprite *	Encode (const SpriteLoader::SpriteCollection &sprite, SpriteAllocator &allocator) override
	Convert a sprite from the loader to our own format.

std::string_view	GetName () override
	Get the name of the blitter, the same as the Factory-instance returns.

Public Member Functions inherited from Blitter_32bppBase
uint8_t	GetScreenDepth () override
	Get the screen depth this blitter works for. More...

void *	MoveTo (void *video, int x, int y) override
	Move the destination pointer the requested amount x and y, keeping in mind any pitch and bpp of the renderer. More...

void	SetPixel (void *video, int x, int y, uint8_t colour) override
	Draw a pixel with a given colour on the video-buffer. More...

void	DrawLine (void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8_t colour, int width, int dash) override
	Draw a line with a given colour. More...

void	DrawRect (void *video, int width, int height, uint8_t colour) override
	Make a single horizontal line in a single colour on the video-buffer. More...

void	CopyFromBuffer (void video, const void src, int width, int height) override
	Copy from a buffer to the screen. More...

void	CopyToBuffer (const void video, void dst, int width, int height) override
	Copy from the screen to a buffer. More...

void	CopyImageToBuffer (const void video, void dst, int width, int height, int dst_pitch) override
	Copy from the screen to a buffer in a palette format for 8bpp and RGBA format for 32bpp. More...

void	ScrollBuffer (void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) override
	Scroll the videobuffer some 'x' and 'y' value. More...

size_t	BufferSize (uint width, uint height) override
	Calculate how much memory there is needed for an image of this size in the video-buffer. More...

void	PaletteAnimate (const Palette &palette) override
	Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'first_dirty' to 'first_dirty + count_dirty'. More...

Blitter::PaletteAnimation	UsePaletteAnimation () override
	Check if the blitter uses palette animation at all. More...

Public Member Functions inherited from Blitter
bool	Is32BppSupported () override
	Can the sprite encoder make use of RGBA sprites?

virtual bool	NeedsAnimationBuffer ()
	Does this blitter require a separate animation buffer from the video backend?

template<typename SetPixelT >
void	DrawLineGeneric (int x, int y, int x2, int y2, int screen_width, int screen_height, int width, int dash, SetPixelT set_pixel)

Public Member Functions inherited from SpriteEncoder
virtual uint	GetSpriteAlignment ()
	Get the value which the height and width on a sprite have to be aligned by. More...

Protected Attributes
uint16_t *	anim_buf
	In this buffer we keep track of the 8bpp indexes so we can do palette animation.

void *	anim_alloc
	The raw allocated buffer, not necessarily aligned correctly.

int	anim_buf_width
	The width of the animation buffer.

int	anim_buf_height
	The height of the animation buffer.

int	anim_buf_pitch
	The pitch of the animation buffer (width rounded up to 16 byte boundary).

Palette	palette
	The current palette.

Additional Inherited Members
Public Types inherited from Blitter
enum	PaletteAnimation { PALETTE_ANIMATION_NONE , PALETTE_ANIMATION_VIDEO_BACKEND , PALETTE_ANIMATION_BLITTER }
	Types of palette animation. More...

Static Public Member Functions inherited from Blitter_32bppBase
static Colour	LookupColourInPalette (uint index)
	Look up the colour in the current palette.

static Colour	ComposeColourRGBANoCheck (uint r, uint g, uint b, uint a, Colour current)
	Compose a colour based on RGBA values and the current pixel value.

static Colour	ComposeColourRGBA (uint r, uint g, uint b, uint a, Colour current)
	Compose a colour based on RGBA values and the current pixel value. More...

static Colour	ComposeColourPANoCheck (Colour colour, uint a, Colour current)
	Compose a colour based on Pixel value, alpha value, and the current pixel value.

static Colour	ComposeColourPA (Colour colour, uint a, Colour current)
	Compose a colour based on Pixel value, alpha value, and the current pixel value. More...

static Colour	MakeTransparent (Colour colour, uint nom, uint denom=256)
	Make a pixel looks like it is transparent. More...

static uint8_t	MakeDark (uint8_t r, uint8_t g, uint8_t b)
	Make a colour dark grey, for specialized 32bpp remapping. More...

static Colour	MakeDark (Colour colour)
	Make a colour dark grey, for specialized 32bpp remapping. More...

static Colour	MakeGrey (Colour colour)
	Make a colour grey - based. More...

static Colour	ReallyAdjustBrightness (Colour colour, uint8_t brightness)

static Colour	AdjustBrightness (Colour colour, uint8_t brightness)

static uint8_t	GetColourBrightness (Colour colour)

Static Public Attributes inherited from Blitter_32bppBase
static const int	DEFAULT_BRIGHTNESS = 128

Protected Member Functions inherited from Blitter_32bppOptimized
template<bool Tpal_to_rgb>
void	Draw (Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
	Draw an image to the screen, given an amount of params defined above.

template<bool Tpal_to_rgb>
Sprite *	EncodeInternal (const SpriteLoader::SpriteCollection &sprite, SpriteAllocator &allocator)

Detailed Description

The optimised 32 bpp blitter with palette animation.

Definition at line 16 of file 32bpp_anim.hpp.

Member Function Documentation

◆ BufferSize()

size_t Blitter_32bppAnim::BufferSize	(	uint	width,
		uint	height
	)

overridevirtual

Calculate how much memory there is needed for an image of this size in the video-buffer.

Parameters

width	The width of the buffer-to-be.
height	The height of the buffer-to-be.

Returns: The size needed for the buffer.

Implements Blitter.

Definition at line 497 of file 32bpp_anim.cpp.

◆ CopyFromBuffer()

void Blitter_32bppAnim::CopyFromBuffer	(	void *	video,
		const void *	src,
		int	width,
		int	height
	)

overridevirtual

Copy from a buffer to the screen.

Parameters

video	The destination pointer (video-buffer).
src	The buffer from which the data will be read.
width	The width of the buffer.
height	The height of the buffer.

Note: You can not do anything with the content of the buffer, as the blitter can store non-pixel data in it too!

Implements Blitter.

Definition at line 384 of file 32bpp_anim.cpp.

References _screen_disable_anim.

◆ CopyToBuffer()

void Blitter_32bppAnim::CopyToBuffer	(	const void *	video,
		void *	dst,
		int	width,
		int	height
	)

overridevirtual

Copy from the screen to a buffer.

Parameters

video	The destination pointer (video-buffer).
dst	The buffer in which the data will be stored.
width	The width of the buffer.
height	The height of the buffer.

Note: You can not do anything with the content of the buffer, as the blitter can store non-pixel data in it too!

Implements Blitter.

Definition at line 424 of file 32bpp_anim.cpp.

References _screen_disable_anim.

◆ DrawColourMappingRect()

void Blitter_32bppAnim::DrawColourMappingRect	(	void *	dst,
		int	width,
		int	height,
		PaletteID	pal
	)

overridevirtual

Draw a colourtable to the screen.

This is: the colour of the screen is read and is looked-up in the palette to match a new colour, which then is put on the screen again.

Parameters

dst	the destination pointer (video-buffer).
width	the width of the buffer.
height	the height of the buffer.
pal	the palette to use.

Implements Blitter.

Definition at line 288 of file 32bpp_anim.cpp.

References _screen_disable_anim, and Blitter_32bppSimple::DrawColourMappingRect().

◆ DrawLine()

void Blitter_32bppAnim::DrawLine	(	void *	video,
		int	x,
		int	y,
		int	x2,
		int	y2,
		int	screen_width,
		int	screen_height,
		uint8_t	colour,
		int	width,
		int	dash
	)

overridevirtual

Draw a line with a given colour.

Parameters

video	The destination pointer (video-buffer).
x	The x coordinate from where the line starts.
y	The y coordinate from where the line starts.
x2	The x coordinate to where the line goes.
y2	The y coordinate to where the lines goes.
screen_width	The width of the screen you are drawing in (to avoid buffer-overflows).
screen_height	The height of the screen you are drawing in (to avoid buffer-overflows).
colour	A 8bpp mapping colour.
width	Line width.
dash	Length of dashes for dashed lines. 0 means solid line.

Implements Blitter.

Definition at line 339 of file 32bpp_anim.cpp.

◆ DrawRect()

void Blitter_32bppAnim::DrawRect	(	void *	video,
		int	width,
		int	height,
		uint8_t	colour
	)

overridevirtual

Make a single horizontal line in a single colour on the video-buffer.

Parameters

video	The destination pointer (video-buffer).
width	The length of the line.
height	The height of the line.
colour	A 8bpp mapping colour.

Implements Blitter.

Definition at line 357 of file 32bpp_anim.cpp.

References _screen_disable_anim, Blitter_32bppBase::DrawRect(), and LookupColourInPalette().

◆ PaletteAnimate()

void Blitter_32bppAnim::PaletteAnimate ( const Palette & palette )

overridevirtual

Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'first_dirty' to 'first_dirty + count_dirty'.

Parameters

palette The new palette.

Implements Blitter.

Definition at line 502 of file 32bpp_anim.cpp.

References _screen_disable_anim, Palette::first_dirty, palette, and PALETTE_ANIM_START.

◆ ScrollBuffer()

void Blitter_32bppAnim::ScrollBuffer	(	void *	video,
		int &	left,
		int &	top,
		int &	width,
		int &	height,
		int	scroll_x,
		int	scroll_y
	)

overridevirtual

Scroll the videobuffer some 'x' and 'y' value.

Parameters

video	The buffer to scroll into.
left	The left value of the screen to scroll.
top	The top value of the screen to scroll.
width	The width of the screen to scroll.
height	The height of the screen to scroll.
scroll_x	How much to scroll in X.
scroll_y	How much to scroll in Y.

Implements Blitter.

Definition at line 446 of file 32bpp_anim.cpp.

References _screen_disable_anim.

◆ SetPixel()

void Blitter_32bppAnim::SetPixel	(	void *	video,
		int	x,
		int	y,
		uint8_t	colour
	)

overridevirtual

Draw a pixel with a given colour on the video-buffer.

Parameters

video	The destination pointer (video-buffer).
x	The x position within video-buffer.
y	The y position within video-buffer.
colour	A 8bpp mapping colour.

Implements Blitter.

Definition at line 329 of file 32bpp_anim.cpp.

◆ UsePaletteAnimation()

Blitter::PaletteAnimation Blitter_32bppAnim::UsePaletteAnimation ( )

overridevirtual

Check if the blitter uses palette animation at all.

Returns: True if it uses palette animation.

Implements Blitter.

Definition at line 538 of file 32bpp_anim.cpp.

References Blitter::PALETTE_ANIMATION_BLITTER.

The documentation for this class was generated from the following files:

src/blitter/32bpp_anim.hpp
src/blitter/32bpp_anim.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ BufferSize()

◆ CopyFromBuffer()

◆ CopyToBuffer()

◆ DrawColourMappingRect()

◆ DrawLine()

◆ DrawRect()

◆ PaletteAnimate()

◆ ScrollBuffer()

◆ SetPixel()

◆ UsePaletteAnimation()