Class

FxBitmap

The FxBitmap class provides the RAM-based image for software rendering.

Declaration

@interface FxBitmap : FxImage

Overview

The FxBitmap class is a subclass of the FxImage class that represents an image in main memory. This is useful for plug-ins which cannot easily work on the GPU. Such plug-ins can perform their task on the CPU using the images from main memory.

An FxBitmap instance has accessors for getting a pointer to the location in memory where its image starts, how many bytes are in a single scanline of pixels, and how many bytes make up a single color channel of the image.

The FxBitmap class was first introduced in FxImage class 0.0.

Topics

Initializing a Bitmap

- initWithInfo:rowBytes:andData:

Initializes with the given image information structure and pixel buffer.

Accessing Bitmap Attributes

- dataPtr

Returns a pointer to the pixel buffer for the bitmap.

- setDataPtr:

Assigns the given pixel buffer to the bitmap.

- rowBytes

Returns the offset in bytes between the start of two rows.

- setRowBytes:

Sets the given bitmap’s row bytes value.

- dataPtrForPositionX:Y:

Returns a pointer to the pixel at the given position.

Relationships

Inherits From

Conforms To

See Also

Legacy Classes

FxImage

The FxImage class is the parent class of the FxBitmap and FxTexture classes.

FxTexture

The FxTexture class defines the methods that allow VRAM-based images to be used for hardware-accelerated rendering.