Function trans_rect

Source/render.cpp:294–306

* Draws a half-transparent rectangle by blacking out odd pixels on odd lines, * even pixels on even lines. * @brief Render a transparent black rectangle * @param sx Screen coordinate * @param sy Screen coordinate * @param width Rectangle width * @param height Rectangle height */

 * @param height Rectangle height
 */
void trans_rect(int sx, int sy, int width, int height)
{
	int row, col;
	BYTE *pix = &gpBuffer[SCREENXY(sx, sy)];
	for (row = 0; row < height; row++) {
		for (col = 0; col < width; col++) {
			if ((row & 1 && col & 1) || (!(row & 1) && !(col & 1)))
				*pix = 0;
			pix++;
		}
		pix += BUFFER_WIDTH - width;
	}
}

DEVILUTION_END_NAMESPACE