author | richk |
Sat, 14 Jul 2007 19:42:58 +0000 | |
branch | NewGRF_ports |
changeset 6720 | 35756db7e577 |
child 6872 | 1c4a4a609f85 |
permissions | -rw-r--r-- |
6720
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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.hpp" |
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#include "../gfx.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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} |