The most trivial 32 bpp blitter (without palette animation). More...

#include <32bpp_simple.hpp>

Inheritance diagram for Blitter_32bppSimple:

Data Structures
struct	Pixel

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.

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.

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.

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

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.

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.

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

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

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.

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.

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.

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'.

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

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?

virtual void	PostResize ()
	Post resize event.

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.

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.

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.

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

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

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

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

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

Detailed Description

The most trivial 32 bpp blitter (without palette animation).

Definition at line 17 of file 32bpp_simple.hpp.

Member Function Documentation

◆ Draw()

void Blitter_32bppSimple::Draw	(	Blitter::BlitterParams *	bp,
		BlitterMode	mode,
		ZoomLevel	zoom
	)

overridevirtual

Draw an image to the screen, given an amount of params defined above.

Implements Blitter.

Reimplemented in Blitter_40bppAnim.

Definition at line 22 of file 32bpp_simple.cpp.

◆ DrawColourMappingRect()

void Blitter_32bppSimple::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.

Reimplemented in Blitter_40bppAnim.

Definition at line 90 of file 32bpp_simple.cpp.

References Debug, Blitter_32bppBase::MakeGrey(), Blitter_32bppBase::MakeTransparent(), PALETTE_NEWSPAPER, and PALETTE_TO_TRANSPARENT.

Referenced by Blitter_32bppAnim::DrawColourMappingRect(), and Blitter_40bppAnim::DrawColourMappingRect().

◆ Encode()

Sprite * Blitter_32bppSimple::Encode	(	const SpriteLoader::SpriteCollection &	sprite,
		SpriteAllocator &	allocator
	)

overridevirtual

Convert a sprite from the loader to our own format.

Implements SpriteEncoder.

Reimplemented in Blitter_40bppAnim.

Definition at line 118 of file 32bpp_simple.cpp.

References Blitter_32bppSimple::Pixel::a, SpriteLoader::CommonPixel::a, SpriteAllocator::Allocate(), Blitter_32bppSimple::Pixel::b, Colour::b, SpriteLoader::CommonPixel::b, Sprite::data, Blitter_32bppSimple::Pixel::g, SpriteLoader::CommonPixel::g, Sprite::height, Blitter_32bppBase::LookupColourInPalette(), Blitter_32bppSimple::Pixel::m, SpriteLoader::CommonPixel::m, Blitter_32bppSimple::Pixel::r, SpriteLoader::CommonPixel::r, Blitter_32bppSimple::Pixel::v, Sprite::width, Sprite::x_offs, Sprite::y_offs, and ZOOM_LVL_MIN.

◆ GetName()

std::string_view Blitter_32bppSimple::GetName ( )

inlineoverridevirtual

Get the name of the blitter, the same as the Factory-instance returns.

Implements Blitter.

Reimplemented in Blitter_40bppAnim.

Definition at line 31 of file 32bpp_simple.hpp.

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

src/blitter/32bpp_simple.hpp
src/blitter/32bpp_simple.cpp

Data Structures

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ Draw()

◆ DrawColourMappingRect()

◆ Encode()

◆ GetName()