Mercurial > sdl-ios-xcode
view docs/man3/SDL_ConvertSurface.3 @ 2357:ad4a291c85ab gsoc2008_iphone
Added support for OpenGL ES and UIKit Video Driver:
- included SDL_renderer_gles.h
- added UIKit Video driver bootstrap declaration
- added property "retained_backing" to gl_config structure. Having retained backing means your video buffers can't be overwritten by other applications between drawing frames. By default, this is enabled. I wanted to give the option to disable this on iPhone because it increases performance greatly.
- modified SDL_GetAttribute and SDL_SetAttribute function for OpenGL ES support. OpenGL ES does not have support for accumulation buffers, and is always double buffered, among other things.
| author | Holmes Futrell <hfutrell@umail.ucsb.edu> |
|---|---|
| date | Thu, 17 Jul 2008 23:07:58 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
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.TH "SDL_ConvertSurface" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_ConvertSurface \- Converts a surface to the same format as another surface\&. .SH "SYNOPSIS" .PP \fB#include "SDL/SDL\&.h" .sp \fBSDL_Surface *\fBSDL_ConvertSurface\fP\fR(\fBSDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags\fR); .SH "DESCRIPTION" .PP Creates a new surface of the specified format, and then copies and maps the given surface to it\&. If this function fails, it returns \fBNULL\fP\&. .PP The \fBflags\fR parameter is passed to \fI\fBSDL_CreateRGBSurface\fP\fR and has those semantics\&. .PP This function is used internally by \fI\fBSDL_DisplayFormat\fP\fR\&. .PP This function can only be called after SDL_Init\&. .SH "RETURN VALUE" .PP Returns either a pointer to the new surface, or \fBNULL\fP on error\&. .SH "SEE ALSO" .PP \fI\fBSDL_CreateRGBSurface\fP\fR, \fI\fBSDL_DisplayFormat\fP\fR, \fI\fBSDL_PixelFormat\fR\fR, \fI\fBSDL_Surface\fR\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01