.TH "SDL_DisplayFormatAlpha" "3" "Mon 12 Mar 2001, 01:04" "SDL" "SDL API Reference"

.SH "NAME"

SDL_DisplayFormatAlpha\- Convert a surface to the display format

.SH "SYNOPSIS"

.PP

\fB#include "SDL\&.h"

.sp

\fBSDL_Surface *\fBSDL_DisplayFormatAlpha\fP\fR(\fBSDL_Surface *surface\fR);

.SH "DESCRIPTION"

.PP

This function takes a surface and copies it to a new surface of the pixel format and colors of the video framebuffer plus an alpha channel, suitable for fast blitting onto the display surface\&. It calls \fISDL_ConvertSurface\fR

.PP

If you want to take advantage of hardware colorkey or alpha blit acceleration, you should set the colorkey and alpha value before calling this function\&.

.SH "RETURN VALUE"

.PP

If the conversion fails or runs out of memory, it returns \fBNULL\fR

.SH "SEE ALSO"

.PP

\fISDL_ConvertSurface\fR, \fISDL_SetAlpha\fR, \fISDL_SetColorKey\fR, \fISDL_DisplayFormat\fR, \fISDL_Surface\fR

...\" created by instant / docbook-to-man, Mon 12 Mar 2001, 01:04