src/blitter/8bpp_simple.cpp
author peter1138
Tue, 29 Jan 2008 17:09:00 +0000
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parent 8619 c2434269c3eb
child 10429 1b99254f9607
permissions -rw-r--r--
(svn r12015) -Fix [FS#1716] (Revert r11422): Patch in FS#1430 avoided instead of fixed the problem. GetStringWithArgs() discards information that SCC_GENDER_LIST needs to work. Now use pointers to retrieve GRF strings, so that GetStringPtr() will work correctly. This is advantageous as now no buffer copy is made when using all GRF strings.
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/* $Id$ */
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/** @file 8bpp_simple.cpp */
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#include "../stdafx.h"
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#include "../zoom_func.h"
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#include "8bpp_simple.hpp"
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static FBlitter_8bppSimple iFBlitter_8bppSimple;
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void Blitter_8bppSimple::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
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{
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	const uint8 *src, *src_line;
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	uint8 *dst, *dst_line;
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	/* Find where to start reading in the source sprite */
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	src_line = (const uint8 *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom);
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	dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left;
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	for (int y = 0; y < bp->height; y++) {
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		dst = dst_line;
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		dst_line += bp->pitch;
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		src = src_line;
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		src_line += bp->sprite_width * ScaleByZoom(1, zoom);
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		for (int x = 0; x < bp->width; x++) {
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			uint color = 0;
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			switch (mode) {
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				case BM_COLOUR_REMAP:
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					color = bp->remap[*src];
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					break;
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				case BM_TRANSPARENT:
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					if (*src != 0) color = bp->remap[*dst];
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					break;
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				default:
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					color = *src;
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					break;
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			}
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			if (color != 0) *dst = color;
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			dst++;
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			src += ScaleByZoom(1, zoom);
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		}
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	}
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}
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Sprite *Blitter_8bppSimple::Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator)
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{
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	Sprite *dest_sprite;
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	dest_sprite = (Sprite *)allocator(sizeof(*dest_sprite) + sprite->height * sprite->width);;
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	dest_sprite->height = sprite->height;
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	dest_sprite->width  = sprite->width;
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	dest_sprite->x_offs = sprite->x_offs;
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	dest_sprite->y_offs = sprite->y_offs;
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	/* Copy over only the 'remap' channel, as that is what we care about in 8bpp */
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	for (int i = 0; i < sprite->height * sprite->width; i++) {
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		dest_sprite->data[i] = sprite->data[i].m;
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	}
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	return dest_sprite;
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}