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QGLFramebufferObjectFormat Class Reference
[QtOpenGL module]

The QGLFramebufferObjectFormat class specifies the format of an OpenGL framebuffer object. More...

Methods

Special Methods


Detailed Description

The QGLFramebufferObjectFormat class specifies the format of an OpenGL framebuffer object.

A framebuffer object has several characteristics:

Note that the desired attachments or number of samples per pixels might not be supported by the hardware driver. Call QGLFramebufferObject.format() after creating a QGLFramebufferObject to find the exact format that was used to create the frame buffer object.


Method Documentation

QGLFramebufferObjectFormat.__init__ (self)

Creates a QGLFramebufferObjectFormat object for specifying the format of an OpenGL framebuffer object.

By default the format specifies a non-multisample framebuffer object with no attachments, texture target GL_TEXTURE_2D, and internal format GL_RGBA8. On OpenGL/ES systems, the default internal format is GL_RGBA.

See also samples(), attachment(), and internalTextureFormat().

QGLFramebufferObjectFormat.__init__ (self, QGLFramebufferObjectFormat other)

Constructs a copy of other.

QGLFramebufferObject.Attachment QGLFramebufferObjectFormat.attachment (self)

Returns the configuration of the depth and stencil buffers attached to a framebuffer object. The default is QGLFramebufferObject.NoAttachment.

See also setAttachment().

int QGLFramebufferObjectFormat.internalTextureFormat (self)

Returns the internal format of a framebuffer object's texture or multisample framebuffer object's color buffer. The default is GL_RGBA8 on desktop OpenGL systems, and GL_RGBA on OpenGL/ES systems.

See also setInternalTextureFormat().

bool QGLFramebufferObjectFormat.mipmap (self)

Returns true if mipmapping is enabled.

This function was introduced in Qt 4.8.

See also setMipmap().

int QGLFramebufferObjectFormat.samples (self)

Returns the number of samples per pixel if a framebuffer object is a multisample framebuffer object. Otherwise, returns 0. The default value is 0.

See also setSamples().

QGLFramebufferObjectFormat.setAttachment (self, QGLFramebufferObject.Attachment attachment)

Sets the attachment configuration of a framebuffer object to attachment.

See also attachment().

QGLFramebufferObjectFormat.setInternalTextureFormat (self, int internalTextureFormat)

Sets the internal format of a framebuffer object's texture or multisample framebuffer object's color buffer to internalTextureFormat.

See also internalTextureFormat().

QGLFramebufferObjectFormat.setMipmap (self, bool enabled)

Enables mipmapping if enabled is true; otherwise disables it.

Mipmapping is disabled by default.

If mipmapping is enabled, additional memory will be allocated for the mipmap levels. The mipmap levels can be updated by binding the texture and calling glGenerateMipmap(). Mipmapping cannot be enabled for multisampled framebuffer objects.

This function was introduced in Qt 4.8.

See also mipmap() and QGLFramebufferObject.texture().

QGLFramebufferObjectFormat.setSamples (self, int samples)

Sets the number of samples per pixel for a multisample framebuffer object to samples. The default sample count of 0 represents a regular non-multisample framebuffer object.

If the desired amount of samples per pixel is not supported by the hardware then the maximum number of samples per pixel will be used. Note that multisample framebuffer objects can not be bound as textures. Also, the GL_EXT_framebuffer_multisample extension is required to create a framebuffer with more than one sample per pixel.

See also samples().

QGLFramebufferObjectFormat.setTextureTarget (self, int target)

Sets the texture target of the texture attached to a framebuffer object to target. Ignored for multisample framebuffer objects.

See also textureTarget() and samples().

int QGLFramebufferObjectFormat.textureTarget (self)

Returns the texture target of the texture attached to a framebuffer object. Ignored for multisample framebuffer objects. The default is GL_TEXTURE_2D.

See also setTextureTarget() and samples().

bool QGLFramebufferObjectFormat.__eq__ (self, QGLFramebufferObjectFormat other)

bool QGLFramebufferObjectFormat.__ne__ (self, QGLFramebufferObjectFormat other)


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