SDL_SetClipRect(3) SDL API Reference SDL_SetClipRect(3)NAME
SDL_SetClipRect - Sets the clipping rectangle for a surface.
SYNOPSIS
#include "SDL.h"
void SDL_SetClipRect(SDL_Surface *surface, SDL_Rect *rect);
DESCRIPTION
Sets the clipping rectangle for a surface. When this surface is the destination of a blit, only the area within the clip rectangle will be
drawn into.
The rectangle pointed to by rect will be clipped to the edges of the surface so that the clip rectangle for a surface can never fall out-
side the edges of the surface.
If rect is NULL the clipping rectangle will be set to the full size of the surface.
SEE ALSO
SDL_GetClipRect, SDL_BlitSurface, SDL_Surface
SDL Tue 11 Sep 2001, 23:01 SDL_SetClipRect(3)
Check Out this Related Man Page
SDL_Surface(3) SDL API Reference SDL_Surface(3)NAME
SDL_Surface - Graphical Surface Structure
STRUCTURE DEFINITION
typedef struct SDL_Surface {
Uint32 flags; /* Read-only */
SDL_PixelFormat *format; /* Read-only */
int w, h; /* Read-only */
Uint16 pitch; /* Read-only */
void *pixels; /* Read-write */
/* clipping information */
SDL_Rect clip_rect; /* Read-only */
/* Reference count -- used when freeing surface */
int refcount; /* Read-mostly */
/* This structure also contains private fields not shown here */
} SDL_Surface;
STRUCTURE DATA
flags Surface flags
format Pixel format
w, h Width and height of the surface
pitch Length of a surface scanline in bytes
pixels Pointer to the actual pixel data
clip_rect surface clip rectangle
DESCRIPTION
SDL_Surface's represent areas of "graphical" memory, memory that can be drawn to. The video framebuffer is returned as a SDL_Surface by
SDL_SetVideoMode and SDL_GetVideoSurface. Most of the fields should be pretty obvious. w and h are the width and height of the surface in
pixels. pixels is a pointer to the actual pixel data, the surface should be locked before accessing this field. The clip_rect field is the
clipping rectangle as set by SDL_SetClipRect.
The following are supported in the flags field.
SDL_SWSURFACE Surface is stored in system memory
SDL_HWSURFACE Surface is stored in video memory
SDL_ASYNCBLIT Surface uses asynchronous blits if possible
SDL_ANYFORMAT Allows any pixel-format (Display surface)
SDL_HWPALETTE Surface has exclusive palette
SDL_DOUBLEBUF Surface is double buffered (Display surface)
SDL_FULLSCREEN Surface is full screen (Display Surface)
SDL_OPENGL Surface has an OpenGL context (Display Surface)
SDL_OPENGLBLIT Surface supports OpenGL blitting (Display Surface)
SDL_RESIZABLE Surface is resizable (Display Surface)
SDL_HWACCEL Surface blit uses hardware acceleration
SDL_SRCCOLORKEY Surface use colorkey blitting
SDL_RLEACCEL Colorkey blitting is accelerated with RLE
SDL_SRCALPHA Surface blit uses alpha blending
SDL_PREALLOC Surface uses preallocated memory
SEE ALSO
SDL_PixelFormat
SDL Tue 11 Sep 2001, 23:01 SDL_Surface(3)
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