SDL_GetRGBA
Use this function to get RGBA values from a pixel in the specified format.
Syntax
void SDL_GetRGBA(Uint32 pixel,
const SDL_PixelFormat* format,
Uint8* r,
Uint8* g,
Uint8* b,
Uint8* a)
Function Parameters
pixel |
a pixel value |
format |
an SDL_PixelFormat structure describing the format of the pixel |
r |
a pointer filled in with the red component |
g |
a pointer filled in with the green component |
b |
a pointer filled in with the blue component |
a |
a pointer filled in with the alpha component |
Code Examples
You can add your code example here
Remarks
This function uses the entire 8-bit [0..255] range when converting color components from pixel formats with less than 8-bits per RGB component (e.g., a completely white pixel in 16-bit RGB565 format would return [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]).
If the surface has no alpha component, the alpha will be returned as 0xff (100% opaque).
