Method testSurface

src/Menu/TestState.cpp:149–174

* Generates a surface with a row of every single color currently * loaded in the game palette (like a rainbow). First used for * testing 8bpp functionality, still useful for debugging palette issues. * @return Test surface. */

 * @return Test surface.
 */
SDL_Surface *TestState::testSurface()
{
	SDL_Surface *surface;

	// Create surface
	surface = SDL_CreateRGBSurface(SDL_HWSURFACE, 256, 25, 8, 0, 0, 0, 0);

	if (surface == 0)
	{
		throw Exception(SDL_GetError());
	}

	// Lock the surface
	SDL_LockSurface(surface);

	Uint8 *index = (Uint8 *)surface->pixels;

	for (int j = 0; j < 25; ++j)
		for (int i = 0; i < 256; i++, ++index)
			*index = i;

	// Unlock the surface
	SDL_UnlockSurface(surface);

	return surface;
}

}