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sdl_convertsurface(3) [opensolaris man page]

SDL_ConvertSurface(3)						 SDL API Reference					     SDL_ConvertSurface(3)

NAME
SDL_ConvertSurface - Converts a surface to the same format as another surface. SYNOPSIS
#include "SDL/SDL.h" SDL_Surface *SDL_ConvertSurface(SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags); DESCRIPTION
Creates a new surface of the specified format, and then copies and maps the given surface to it. If this function fails, it returns NULL. The flags parameter is passed to SDL_CreateRGBSurface and has those semantics. This function is used internally by SDL_DisplayFormat. This function can only be called after SDL_Init. RETURN VALUE
Returns either a pointer to the new surface, or NULL on error. SEE ALSO
SDL_CreateRGBSurface, SDL_DisplayFormat, SDL_PixelFormat, SDL_Surface SDL
Tue 11 Sep 2001, 23:01 SDL_ConvertSurface(3)

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SDL_CreateRGBSurface(3) 					 SDL API Reference					   SDL_CreateRGBSurface(3)

NAME
SDL_CreateRGBSurface - Create an empty SDL_Surface SYNOPSIS
#include "SDL.h" SDL_Surface *SDL_CreateRGBSurface(Uint32 flags, int width, int height, int depth, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); DESCRIPTION
Allocate an empty surface (must be called after SDL_SetVideoMode) If depth is 8 bits an empty palette is allocated for the surface, otherwise a 'packed-pixel' SDL_PixelFormat is created using the [RGBA]mask's provided (see SDL_PixelFormat). The flags specifies the type of surface that should be created, it is an OR'd combination of the following possible values. SDL_SWSURFACE SDL will create the surface in system memory. This improves the performance of pixel level access, however you may not be able to take advantage of some types of hardware blitting. SDL_HWSURFACE SDL will attempt to create the surface in video memory. This will allow SDL to take advantage of Video->Video blits (which are often accelerated). SDL_SRCCOLORKEY This flag turns on colourkeying for blits from this surface. If SDL_HWSURFACE is also specified and colourkeyed blits are hardware-accelerated, then SDL will attempt to place the surface in video memory. Use SDL_SetColorKey to set or clear this flag after surface creation. SDL_SRCALPHA This flag turns on alpha-blending for blits from this surface. If SDL_HWSURFACE is also specified and alpha-blending blits are hardware-accelerated, then the surface will be placed in video memory if possible. Use SDL_SetAlpha to set or clear this flag after surface creation. Note: If an alpha-channel is specified (that is, if Amask is nonzero), then the SDL_SRCALPHA flag is automatically set. You may remove this flag by calling SDL_SetAlpha after surface creation. RETURN VALUE
Returns the created surface, or NULL upon error. EXAMPLE
/* Create a 32-bit surface with the bytes of each pixel in R,G,B,A order, as expected by OpenGL for textures */ SDL_Surface *surface; Uint32 rmask, gmask, bmask, amask; /* SDL interprets each pixel as a 32-bit number, so our masks must depend on the endianness (byte order) of the machine */ #if SDL_BYTEORDER == SDL_BIG_ENDIAN rmask = 0xff000000; gmask = 0x00ff0000; bmask = 0x0000ff00; amask = 0x000000ff; #else rmask = 0x000000ff; gmask = 0x0000ff00; bmask = 0x00ff0000; amask = 0xff000000; #endif surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 32, rmask, gmask, bmask, amask); if(surface == NULL) { fprintf(stderr, "CreateRGBSurface failed: %s ", SDL_GetError()); exit(1); } SEE ALSO
SDL_CreateRGBSurfaceFrom, SDL_FreeSurface, SDL_SetVideoMode, SDL_LockSurface, SDL_PixelFormat, SDL_Surface SDL_SetAlpha SDL_SetColorKey SDL
Tue 11 Sep 2001, 23:01 SDL_CreateRGBSurface(3)
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