8bpp_debug.cpp

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00001 /* $Id: 8bpp_debug.cpp 15428 2009-02-09 02:57:15Z rubidium $ */
00002 
00005 #include "../stdafx.h"
00006 #include "../zoom_func.h"
00007 #include "../core/random_func.hpp"
00008 #include "8bpp_debug.hpp"
00009 
00010 static FBlitter_8bppDebug iFBlitter_8bppDebug;
00011 
00012 void Blitter_8bppDebug::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
00013 {
00014   const uint8 *src, *src_line;
00015   uint8 *dst, *dst_line;
00016 
00017   /* Find where to start reading in the source sprite */
00018   src_line = (const uint8 *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom);
00019   dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left;
00020 
00021   for (int y = 0; y < bp->height; y++) {
00022     dst = dst_line;
00023     dst_line += bp->pitch;
00024 
00025     src = src_line;
00026     src_line += bp->sprite_width * ScaleByZoom(1, zoom);
00027 
00028     for (int x = 0; x < bp->width; x++) {
00029       if (*src != 0) *dst = *src;
00030       dst++;
00031       src += ScaleByZoom(1, zoom);
00032     }
00033     assert(src <= src_line);
00034   }
00035 }
00036 
00037 Sprite *Blitter_8bppDebug::Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator)
00038 {
00039   Sprite *dest_sprite;
00040   dest_sprite = (Sprite *)allocator(sizeof(*dest_sprite) + sprite->height * sprite->width);
00041 
00042   dest_sprite->height = sprite->height;
00043   dest_sprite->width  = sprite->width;
00044   dest_sprite->x_offs = sprite->x_offs;
00045   dest_sprite->y_offs = sprite->y_offs;
00046 
00047   /* Write a random colour as sprite; this makes debugging really easy */
00048   uint colour = InteractiveRandom() % 150 + 2;
00049   for (int i = 0; i < sprite->height * sprite->width; i++) {
00050     dest_sprite->data[i] = (sprite->data[i].m == 0) ? 0 : colour;
00051   }
00052 
00053   return dest_sprite;
00054 }

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