Rasterizer using a frame buffer approach: it writes pixels to a single rectangular pixel buffer. More...

#include <SDLRasterizer.hh>

Inheritance diagram for openmsx::SDLRasterizer:

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Collaboration diagram for openmsx::SDLRasterizer:

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Public Types
using	Pixel = uint32_t

Public Member Functions
	SDLRasterizer (const SDLRasterizer &)=delete

SDLRasterizer &	operator= (const SDLRasterizer &)=delete

	SDLRasterizer (VDP &vdp, Display &display, OutputSurface &screen, std::unique_ptr< PostProcessor > postProcessor)

	~SDLRasterizer () override

PostProcessor *	getPostProcessor () const override
	See VDP::getPostProcessor().

bool	isActive () override
	Will the output of this Rasterizer be displayed? There is no point in producing a frame that will not be displayed.

void	reset () override
	Resynchronize with VDP: all cached states are flushed.

void	frameStart (EmuTime::param time) override
	Indicates the start of a new frame.

void	frameEnd () override
	Indicates the end of the current frame.

void	setDisplayMode (DisplayMode mode) override
	Precalc several values that depend on the display mode.

void	setPalette (unsigned index, int grb) override
	Change an entry in the palette.

void	setBackgroundColor (byte index) override
	Changes the background color.

void	setHorizontalAdjust (int adjust) override

void	setHorizontalScrollLow (byte scroll) override

void	setBorderMask (bool masked) override

void	setTransparency (bool enabled) override

void	setSuperimposeVideoFrame (const RawFrame *videoSource) override

void	drawBorder (int fromX, int fromY, int limitX, int limitY) override
	Render a rectangle of border pixels on the host screen.

void	drawDisplay (int fromX, int fromY, int displayX, int displayY, int displayWidth, int displayHeight) override
	Render a rectangle of display pixels on the host screen.

void	drawSprites (int fromX, int fromY, int displayX, int displayY, int displayWidth, int displayHeight) override
	Render a rectangle of sprite pixels on the host screen.

bool	isRecording () const override
	Is video recording active?

Public Member Functions inherited from openmsx::Rasterizer
virtual	~Rasterizer ()=default

Additional Inherited Members
Protected Member Functions inherited from openmsx::Rasterizer
	Rasterizer ()=default

Detailed Description

Rasterizer using a frame buffer approach: it writes pixels to a single rectangular pixel buffer.

Definition at line 28 of file SDLRasterizer.hh.

Member Typedef Documentation

◆ Pixel

using openmsx::SDLRasterizer::Pixel = uint32_t

Definition at line 32 of file SDLRasterizer.hh.

Constructor & Destructor Documentation

◆ SDLRasterizer() [1/2]

openmsx::SDLRasterizer::SDLRasterizer ( const SDLRasterizer & )

delete

◆ SDLRasterizer() [2/2]

openmsx::SDLRasterizer::SDLRasterizer	(	VDP &	vdp,
		Display &	display,
		OutputSurface &	screen,
		std::unique_ptr< PostProcessor >	postProcessor
	)

Definition at line 71 of file SDLRasterizer.cc.

References openmsx::Subject< T >::attach(), openmsx::RenderSettings::getBrightnessSetting(), openmsx::RenderSettings::getColorMatrixSetting(), openmsx::RenderSettings::getContrastSetting(), openmsx::RenderSettings::getGammaSetting(), openmsx::VDP::isMSX1VDP(), and xrange().

◆ ~SDLRasterizer()

openmsx::SDLRasterizer::~SDLRasterizer ( )

override

Definition at line 100 of file SDLRasterizer.cc.

References openmsx::Subject< T >::detach(), openmsx::RenderSettings::getBrightnessSetting(), openmsx::RenderSettings::getColorMatrixSetting(), openmsx::RenderSettings::getContrastSetting(), and openmsx::RenderSettings::getGammaSetting().

Member Function Documentation

◆ drawBorder()

void openmsx::SDLRasterizer::drawBorder	(	int	fromX,
		int	fromY,
		int	limitX,
		int	limitY
	)

overridevirtual

Render a rectangle of border pixels on the host screen.

The units are absolute lines (Y) and VDP clock ticks (X).

Parameters

fromX	X coordinate of render start (inclusive).
fromY	Y coordinate of render start (inclusive).
limitX	X coordinate of render end (exclusive).
limitY	Y coordinate of render end (exclusive).

Implements openmsx::Rasterizer.

Definition at line 379 of file SDLRasterizer.cc.

References openmsx::VDP::getDisplayMode(), openmsx::DisplayMode::getLineWidth(), openmsx::VDP::TICKS_PER_LINE, and xrange().

◆ drawDisplay()

void openmsx::SDLRasterizer::drawDisplay	(	int	fromX,
		int	fromY,
		int	displayX,
		int	displayY,
		int	displayWidth,
		int	displayHeight
	)

overridevirtual

Render a rectangle of display pixels on the host screen.

Parameters

fromX	X coordinate of render start in VDP ticks.
fromY	Y coordinate of render start in absolute lines.
displayX	display coordinate of render start: [0..512).
displayY	display coordinate of render start: [0..256).
displayWidth	rectangle width in pixels (512 per line).
displayHeight	rectangle height in lines.

Implements openmsx::Rasterizer.

Definition at line 416 of file SDLRasterizer.cc.

References openmsx::CharacterConverter::convertLine(), ranges::copy(), openmsx::VDP::getDisplayMode(), openmsx::VDP::getEvenOddMask(), openmsx::VDP::getHorizontalScrollHigh(), openmsx::VDP::getLeftBackground(), openmsx::DisplayMode::getLineWidth(), openmsx::VRAMWindow::getMask(), openmsx::DisplayMode::isBitmapMode(), openmsx::VDP::isMSX1VDP(), openmsx::VDP::isMultiPageScrolling(), openmsx::DisplayMode::isPlanar(), openmsx::DisplayMode::isTextMode(), openmsx::VDPVRAM::nameTable, subspan(), and xrange().

◆ drawSprites()

void openmsx::SDLRasterizer::drawSprites	(	int	fromX,
		int	fromY,
		int	displayX,
		int	displayY,
		int	displayWidth,
		int	displayHeight
	)

overridevirtual

Render a rectangle of sprite pixels on the host screen.

Although the parameters are very similar to drawDisplay, the displayX and displayWidth use range [0..256) instead of [0..512) because VDP sprite coordinates work that way.

Parameters

fromX	X coordinate of render start in VDP ticks.
fromY	Y coordinate of render start in absolute lines.
displayX	display coordinate of render start: [0..256).
displayY	display coordinate of render start: [0..256).
displayWidth	rectangle width in pixels (256 per line).
displayHeight	rectangle height in lines.

Implements openmsx::Rasterizer.

Definition at line 545 of file SDLRasterizer.cc.

References openmsx::SpriteConverter::drawMode1(), openmsx::DisplayMode::getByte(), openmsx::VDP::getDisplayMode(), openmsx::VDP::getLeftSprites(), openmsx::DisplayMode::getLineWidth(), openmsx::DisplayMode::getSpriteMode(), openmsx::DisplayMode::GRAPHIC5, openmsx::DisplayMode::GRAPHIC6, and openmsx::VDP::isMSX1VDP().

◆ frameEnd()

void openmsx::SDLRasterizer::frameEnd ( )

overridevirtual

Indicates the end of the current frame.

The rasterizer can perform image post processing.

Implements openmsx::Rasterizer.

Definition at line 162 of file SDLRasterizer.cc.

◆ frameStart()

void openmsx::SDLRasterizer::frameStart ( EmuTime::param time )

overridevirtual

Indicates the start of a new frame.

The rasterizer can fetch per-frame settings from the VDP.

Implements openmsx::Rasterizer.

Definition at line 146 of file SDLRasterizer.cc.

References openmsx::FrameSource::FIELD_EVEN, openmsx::FrameSource::FIELD_NONINTERLACED, openmsx::FrameSource::FIELD_ODD, openmsx::VDP::getEvenOdd(), openmsx::VDP::isInterlaced(), and openmsx::VDP::isPalTiming().

◆ getPostProcessor()

PostProcessor * openmsx::SDLRasterizer::getPostProcessor ( ) const

overridevirtual

See VDP::getPostProcessor().

Implements openmsx::Rasterizer.

Definition at line 108 of file SDLRasterizer.cc.

◆ isActive()

bool openmsx::SDLRasterizer::isActive ( )

overridevirtual

Will the output of this Rasterizer be displayed? There is no point in producing a frame that will not be displayed.

TODO: Is querying the next pipeline step the best way to solve this, or is it better to explicitly disable the first step in the pipeline?

Implements openmsx::Rasterizer.

Definition at line 113 of file SDLRasterizer.cc.

References openmsx::MSXDevice::getMotherBoard(), openmsx::MSXMotherBoard::isActive(), and openmsx::MSXMotherBoard::isFastForwarding().

◆ isRecording()

bool openmsx::SDLRasterizer::isRecording ( ) const

overridevirtual

Is video recording active?

Implements openmsx::Rasterizer.

Definition at line 601 of file SDLRasterizer.cc.

◆ operator=()

SDLRasterizer & openmsx::SDLRasterizer::operator= ( const SDLRasterizer & )

delete

◆ reset()

void openmsx::SDLRasterizer::reset ( )

overridevirtual

Resynchronize with VDP: all cached states are flushed.

Implements openmsx::Rasterizer.

Definition at line 120 of file SDLRasterizer.cc.

References openmsx::VDP::getDisplayMode(), openmsx::VDP::getTransparency(), setDisplayMode(), and openmsx::SpriteConverter::setTransparency().

◆ setBackgroundColor()

void openmsx::SDLRasterizer::setBackgroundColor ( byte index )

overridevirtual

Changes the background color.

Parameters

index Palette index of the new background color.

Implements openmsx::Rasterizer.

Definition at line 194 of file SDLRasterizer.cc.

References openmsx::DisplayMode::getByte(), openmsx::VDP::getDisplayMode(), openmsx::VDP::getTransparency(), openmsx::DisplayMode::GRAPHIC7, and openmsx::VDP::isSuperimposing().

◆ setBorderMask()

void openmsx::SDLRasterizer::setBorderMask ( bool masked )

overridevirtual

Implements openmsx::Rasterizer.

Definition at line 210 of file SDLRasterizer.cc.

◆ setDisplayMode()

void openmsx::SDLRasterizer::setDisplayMode ( DisplayMode mode )

overridevirtual

Precalc several values that depend on the display mode.

Parameters

mode	The new display mode.

Implements openmsx::Rasterizer.

Definition at line 166 of file SDLRasterizer.cc.

References openmsx::VDP::getBackgroundColor(), openmsx::DisplayMode::getByte(), openmsx::VDP::getTransparency(), openmsx::DisplayMode::GRAPHIC7, openmsx::DisplayMode::isBitmapMode(), openmsx::VDP::isSuperimposing(), openmsx::CharacterConverter::setDisplayMode(), openmsx::BitmapConverter::setDisplayMode(), openmsx::SpriteConverter::setDisplayMode(), and openmsx::SpriteConverter::setPalette().

Referenced by reset().

◆ setHorizontalAdjust()

void openmsx::SDLRasterizer::setHorizontalAdjust ( int adjust )

overridevirtual

Implements openmsx::Rasterizer.

Definition at line 202 of file SDLRasterizer.cc.

◆ setHorizontalScrollLow()

void openmsx::SDLRasterizer::setHorizontalScrollLow ( byte scroll )

overridevirtual

Implements openmsx::Rasterizer.

Definition at line 206 of file SDLRasterizer.cc.

◆ setPalette()

void openmsx::SDLRasterizer::setPalette	(	unsigned	index,
		int	grb
	)

overridevirtual

Change an entry in the palette.

Parameters

index	The index [0..15] in the palette that changes.
grb	The new definition for the changed palette index: bit 10..8 is green, bit 6..4 is red and bit 2..0 is blue; all other bits are zero.

Implements openmsx::Rasterizer.

Definition at line 181 of file SDLRasterizer.cc.

References openmsx::VDP::getBackgroundColor(), openmsx::VDP::getDisplayMode(), openmsx::VDP::getTransparency(), openmsx::VDP::isSuperimposing(), and openmsx::BitmapConverter::palette16Changed().

◆ setSuperimposeVideoFrame()

void openmsx::SDLRasterizer::setSuperimposeVideoFrame ( const RawFrame * videoSource )

overridevirtual

Implements openmsx::Rasterizer.

Definition at line 139 of file SDLRasterizer.cc.

References openmsx::VDP::getBackgroundColor(), openmsx::VDP::getDisplayMode(), and openmsx::VDP::getTransparency().

◆ setTransparency()

void openmsx::SDLRasterizer::setTransparency ( bool enabled )

overridevirtual

Implements openmsx::Rasterizer.

Definition at line 214 of file SDLRasterizer.cc.

References openmsx::VDP::getBackgroundColor(), openmsx::VDP::getDisplayMode(), openmsx::VDP::isSuperimposing(), and openmsx::SpriteConverter::setTransparency().

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

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Pixel

Constructor & Destructor Documentation

◆ SDLRasterizer() [1/2]

◆ SDLRasterizer() [2/2]

◆ ~SDLRasterizer()

Member Function Documentation

◆ drawBorder()

◆ drawDisplay()

◆ drawSprites()

◆ frameEnd()

◆ frameStart()

◆ getPostProcessor()

◆ isActive()

◆ isRecording()

◆ operator=()

◆ reset()

◆ setBackgroundColor()

◆ setBorderMask()

◆ setDisplayMode()

◆ setHorizontalAdjust()

◆ setHorizontalScrollLow()

◆ setPalette()

◆ setSuperimposeVideoFrame()

◆ setTransparency()