openmsx::GLHQScaler Class Reference

#include <GLHQScaler.hh>

Inheritance diagram for openmsx::GLHQScaler:

Collaboration diagram for openmsx::GLHQScaler:

Public Member Functions
	GLHQScaler (GLScaler &fallback, unsigned maxWidth, unsigned maxHeight)
void	scaleImage (gl::ColorTexture &src, gl::ColorTexture *superImpose, unsigned srcStartY, unsigned srcEndY, unsigned srcWidth, unsigned dstStartY, unsigned dstEndY, unsigned dstWidth, unsigned logSrcHeight) override
	Scales the image in the given area, which must consist of lines which are all equally wide.
void	uploadBlock (unsigned srcStartY, unsigned srcEndY, unsigned lineWidth, FrameSource &paintFrame) override
Public Member Functions inherited from openmsx::GLScaler
virtual	~GLScaler ()=default
void	setup (bool superImpose)
	Setup scaler.

Additional Inherited Members
Protected Member Functions inherited from openmsx::GLScaler
	GLScaler (const std::string &progName)
void	execute (const gl::ColorTexture &src, const gl::ColorTexture *superImpose, unsigned srcStartY, unsigned srcEndY, unsigned srcWidth, unsigned dstStartY, unsigned dstEndY, unsigned dstWidth, unsigned logSrcHeight, bool textureFromZero=false)
	Helper method to draw a rectangle with multiple texture coordinates.
Protected Attributes inherited from openmsx::GLScaler
std::array< gl::BufferObject, 2 >	vbo
std::array< gl::ShaderProgram, 2 >	program
std::array< GLint, 2 >	unifTexSize
std::array< GLint, 2 >	unifMvpMatrix

Detailed Description

Definition at line 11 of file GLHQScaler.hh.

Constructor & Destructor Documentation

GLHQScaler()

openmsx::GLHQScaler::GLHQScaler ( GLScaler &  fallback, unsigned  maxWidth, unsigned  maxHeight  )

explicit

Definition at line 19 of file GLHQScaler.cc.

References gl::PixelBuffer< T >::allocate(), gl::Texture::bind(), openmsx::DiskImageUtils::format(), openmsx::File::mmap(), OPENGL_3_3, OPENGL_VERSION, openmsx::GLScaler::program, openmsx::systemFileContext(), and xrange().

Member Function Documentation

scaleImage()

void openmsx::GLHQScaler::scaleImage ( gl::ColorTexture &  src, gl::ColorTexture *  superImpose, unsigned  srcStartY, unsigned  srcEndY, unsigned  srcWidth, unsigned  dstStartY, unsigned  dstEndY, unsigned  dstWidth, unsigned  logSrcHeight  )

overridevirtual

Scales the image in the given area, which must consist of lines which are all equally wide.

Scaling factor depends on the concrete scaler.

Parameters

src	Source: texture containing the frame to be scaled.
superImpose	Texture containing the to-be-superimposed image (can be nullptr).
srcStartY	Y-coordinate of the top source line (inclusive).
srcEndY	Y-coordinate of the bottom source line (exclusive).
srcWidth	The number of pixels per line for the given area.
dstStartY	Y-coordinate of the top destination line (inclusive).
dstEndY	Y-coordinate of the bottom destination line (exclusive).
dstWidth	The number of pixels per line on the output screen.
logSrcHeight	The logical height of the complete src texture (actual texture height can be double as high in case of non-interlace). This is needed to translate src-Y-coordinates to superImpose-Y-coordinates.

Implements openmsx::GLScaler.

Definition at line 86 of file GLHQScaler.cc.

References gl::Texture::bind(), openmsx::GLScaler::execute(), gl::ColorTexture::getHeight(), gl::ColorTexture::getWidth(), openmsx::GLScaler::scaleImage(), and openmsx::GLScaler::setup().

uploadBlock()

void openmsx::GLHQScaler::uploadBlock ( unsigned  srcStartY, unsigned  srcEndY, unsigned  lineWidth, FrameSource &  paintFrame  )

overridevirtual

Reimplemented from openmsx::GLScaler.

Definition at line 123 of file GLHQScaler.cc.

References gl::Texture::bind(), gl::PixelBuffer< T >::bind(), openmsx::calcEdgesGL(), ranges::fill(), openmsx::DiskImageUtils::format(), openmsx::FrameSource::getLine(), gl::PixelBuffer< T >::mapWrite(), OPENGL_3_3, OPENGL_VERSION, gl::PixelBuffer< T >::unbind(), gl::PixelBuffer< T >::unmap(), and xrange().

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

• GLHQScaler.hh
• GLHQScaler.cc