al_get_backbuffer - Online Linux Manual PageSection : 3
Updated :
Source : Allegro reference manual
Note :

---

NAMEal_get_backbuffer − Allegro 5 API

---

SYNOPSIS #include <allegro5/allegro.h> ALLEGRO_BITMAP *al_get_backbuffer(ALLEGRO_DISPLAY *display)

---

DESCRIPTIONReturn a special bitmap representing the back−buffer of the display. Care should be taken when using the backbuffer bitmap (and its sub−bitmaps) as the source bitmap (e.g as the bitmap argument to al_draw_bitmap(3)). Only untransformed operations are hardware accelerated. These consist of al_draw_bitmap(3) and al_draw_bitmap_region(3) when the current transformation is the identity. If the transformation is not the identity, or some other drawing operation is used, the call will be routed through the memory bitmap routines, which are slow. If you need those operations to be accelerated, then first copy a region of the backbuffer into a temporary bitmap (via the al_draw_bitmap(3) and al_draw_bitmap_region(3)), and then use that temporary bitmap as the source bitmap. 0

---

Johanes Gumabo

---

Data Size   :   3,286 byte
man-al_get_backbuffer.3Build   :   2024-12-05, 20:55   :  
Visitor Screen   :   x
Visitor Counter ( page / site )   :   3 / 202,205
Visitor ID   :     :  
Visitor IP   :   18.217.10.152   :  
Visitor Provider   :   AMAZON-02   :  
Provider Position ( lat x lon )   :   39.962500 x -83.006100   :   x
Provider Accuracy Radius ( km )   :   1000   :  
Provider City   :   Columbus   :  
Provider Province   :   Ohio ,   :   ,
Provider Country   :   United States   :  
Provider Continent   :   North America   :  
Visitor Recorder   :   Version   :  
Visitor Recorder   :   Library   :  
Online Linux Manual Page   :   Version   :   Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.05
Online Linux Manual Page   :   Library   :   lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page   :   Library   :   lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base   :   Version   :   Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base   :   Library   :   lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36

---

Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .

---

If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.

---