Unit al5image

Uses
Classes, Interfaces, Objects and Records
Types
Constants
Variables

Description

This unit registers bitmap format handlers for al_load_bitmap, al_save_bitmap, etc.

The following types are built into the Allegro image addon and guaranteed to be available: BMP, PCX, TGA. Every platform also supports JPEG and PNG via external dependencies.

Other formats may be available depending on the operating system and installed libraries, but are not guaranteed and should not be assumed to be universally available.

Overview

Functions and Procedures

FUNCTION al_init_image_addon: AL_BOOL; CDECL; EXTERNAL ALLEGRO_IMAGE_LIB_NAME;
PROCEDURE al_shutdown_image_addon; CDECL; EXTERNAL ALLEGRO_IMAGE_LIB_NAME;
FUNCTION al_get_allegro_image_version: AL_UINT32; CDECL; EXTERNAL ALLEGRO_IMAGE_LIB_NAME;

Description

Functions and Procedures

FUNCTION al_init_image_addon: AL_BOOL; CDECL; EXTERNAL ALLEGRO_IMAGE_LIB_NAME;

Initializes the image addon. This registers bitmap format handlers for al_load_bitmap, al_load_bitmap_f, al_save_bitmap, al_save_bitmap_f.

The following types are built into the Allegro image addon and guaranteed to be available: BMP, DDS, PCX, TGA. Every platform also supports JPEG and PNG via external dependencies.

Other formats may be available depending on the operating system and installed libraries, but are not guaranteed and should not be assumed to be universally available.

The DDS format is only supported to load from, and only if the DDS file contains textures compressed in the DXT1, DXT3 and DXT5 formats. Note that when loading a DDS file, the created bitmap will always be a video bitmap and will have the pixel format matching the format in the file.

PROCEDURE al_shutdown_image_addon; CDECL; EXTERNAL ALLEGRO_IMAGE_LIB_NAME;

Shuts down the image addon. This is done automatically at program exit, but can be called any time the user wishes as well.

FUNCTION al_get_allegro_image_version: AL_UINT32; CDECL; EXTERNAL ALLEGRO_IMAGE_LIB_NAME;

Returns the (compiled) version of the addon, in the same format as al_get_allegro_version.


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