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QGL Namespace

The QGL namespace specifies miscellaneous identifiers used in the Qt OpenGL module. 更多...

头：	#include <QGL>
qmake:	QT += opengl

类型

enum	FormatOption { DoubleBuffer, DepthBuffer, Rgba, AlphaChannel, ..., NoDeprecatedFunctions }
flags	FormatOptions

详细描述

The QGL namespace specifies miscellaneous identifiers used in the Qt OpenGL module.

类型文档编制

enum QGL:: FormatOption
flags QGL:: FormatOptions

This enum specifies the format options that can be used to configure an OpenGL context. These are set using QGLFormat::setOption ().

常量	值	描述
QGL::DoubleBuffer	0x0001	Specifies the use of double buffering.
QGL::DepthBuffer	0x0002	Enables the use of a depth buffer.
QGL::Rgba	0x0004	Specifies that the context should use RGBA as its pixel format.
QGL::AlphaChannel	0x0008	Enables the use of an alpha channel.
QGL::AccumBuffer	0x0010	Enables the use of an accumulation buffer.
QGL::StencilBuffer	0x0020	Enables the use of a stencil buffer.
QGL::StereoBuffers	0x0040	Enables the use of a stereo buffers for use with visualization hardware.
QGL::DirectRendering	0x0080	Specifies that the context is used for direct rendering to a display.
QGL::HasOverlay	0x0100	Enables the use of an overlay.
QGL::SampleBuffers	0x0200	Enables the use of sample buffers.
QGL::DeprecatedFunctions	0x0400	Enables the use of deprecated functionality for OpenGL 3.x contexts. A context with deprecated functionality enabled is called a full context in the OpenGL specification.
QGL::SingleBuffer	DoubleBuffer<<16	Specifies the use of a single buffer, as opposed to double buffers.
QGL::NoDepthBuffer	DepthBuffer<<16	Disables the use of a depth buffer.
QGL::ColorIndex	Rgba<<16	Specifies that the context should use a color index as its pixel format.
QGL::NoAlphaChannel	AlphaChannel<<16	Disables the use of an alpha channel.
QGL::NoAccumBuffer	AccumBuffer<<16	Disables the use of an accumulation buffer.
QGL::NoStencilBuffer	StencilBuffer<<16	Disables the use of a stencil buffer.
QGL::NoStereoBuffers	StereoBuffers<<16	Disables the use of stereo buffers.
QGL::IndirectRendering	DirectRendering<<16	Specifies that the context is used for indirect rendering to a buffer.
QGL::NoOverlay	HasOverlay<<16	Disables the use of an overlay.
QGL::NoSampleBuffers	SampleBuffers<<16	Disables the use of sample buffers.
QGL::NoDeprecatedFunctions	DeprecatedFunctions<<16	Disables the use of deprecated functionality for OpenGL 3.x contexts. A context with deprecated functionality disabled is called a forward compatible context in the OpenGL specification.

FormatOptions 类型是 typedef 对于 QFlags <FormatOption>。它存储 FormatOption 值的 OR 组合。