SDL_Palette(3) SDL API Reference SDL_Palette(3)NAME
SDL_Palette - Color palette for 8-bit pixel formats
ncolors Number of colors used in this palette
colors Pointer to SDL_Color structures that make up the palette.
Each pixel in an 8-bit surface is an index into the colors field of the SDL_Palette structure store in SDL_PixelFormat. A SDL_Palette
should never need to be created manually. It is automatically created when SDL allocates a SDL_PixelFormat for a surface. The colors values
of a SDL_Surfaces palette can be set with the SDL_SetColors.
SDL_Color, SDL_Surface, SDL_SetColors SDL_SetPalette
SDL Tue 11 Sep 2001, 23:01 SDL_Palette(3)
Check Out this Related Man Page
SDL_SetColors(3) SDL API Reference SDL_SetColors(3)NAME
SDL_SetColors - Sets a portion of the colormap for the given 8-bit surface.
int SDL_SetColors(SDL_Surface *surface, SDL_Color *colors, int firstcolor, int ncolors);
Sets a portion of the colormap for the given 8-bit surface.
When surface is the surface associated with the current display, the display colormap will be updated with the requested colors. If
SDL_HWPALETTE was set in SDL_SetVideoMode flags, SDL_SetColors will always return 1, and the palette is guaranteed to be set the way you
desire, even if the window colormap has to be warped or run under emulation.
The color components of a SDL_Color structure are 8-bits in size, giving you a total of 256^3 =16777216 colors.
Palettized (8-bit) screen surfaces with the SDL_HWPALETTE flag have two palettes, a logical palette that is used for mapping blits to/from
the surface and a physical palette (that determines how the hardware will map the colors to the display). SDL_SetColors modifies both pal-
ettes (if present), and is equivalent to calling SDL_SetPalette with the flags set to (SDL_LOGPAL | SDL_PHYSPAL).
If surface is not a palettized surface, this function does nothing, returning 0. If all of the colors were set as passed to SDL_SetColors,
it will return 1. If not all the color entries were set exactly as given, it will return 0, and you should look at the surface palette to
determine the actual color palette.
/* Create a display surface with a grayscale palette */
/* Fill colors with color information */
/* Create display */
screen=SDL_SetVideoMode(640, 480, 8, SDL_HWPALETTE);
printf("Couldn't set video mode: %s
/* Set palette */
SDL_SetColors(screen, colors, 0, 256);
SDL_Color SDL_Surface, SDL_SetPalette, SDL_SetVideoMode
SDL Tue 11 Sep 2001, 23:01 SDL_SetColors(3)
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