/* $Id$ */

#include "../stdafx.h"

#include "../zoom_func.h"

#include "../gfx_func.h"

#include "../debug.h"

#include "32bpp_optimized.hpp"

static FBlitter_32bppOptimized iFBlitter_32bppOptimized;

void Blitter_32bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)

{

	const SpriteLoader::CommonPixel *src, *src_line;

	uint32 *dst, *dst_line;

	/* Find where to start reading in the source sprite */

	src_line = (const SpriteLoader::CommonPixel *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom);

	dst_line = (uint32 *)bp->dst + bp->top * bp->pitch + bp->left;

	for (int y = 0; y < bp->height; y++) {

		dst = dst_line;

		dst_line += bp->pitch;

		src = src_line;

		src_line += bp->sprite_width * ScaleByZoom(1, zoom);

		for (int x = 0; x < bp->width; x++) {

			if (src->a == 0) {

				/* src->r is 'misused' here to indicate how much more pixels are following with an alpha of 0 */

				int skip = UnScaleByZoom(src->r, zoom);