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@ r9583:b6e25a00b908
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Location: cpp/openttd-patchpack/source/src/blitter/32bpp_simple.cpp
r9583:b6e25a00b908
3.4 KiB
text/x-c
(svn r13621) -Fix: building roadbits in the wrong direction on bridges or building roadbits from underneath the bridge to the bridgehead is impossible, so don't silently ignore that error when building over houses and industries is not ignored.
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/** @file 32bpp_simple.cpp Implementation of the simple 32 bpp blitter. */
#include "../stdafx.h"
#include "../gfx_func.h"
#include "../zoom_func.h"
#include "../debug.h"
#include "32bpp_simple.hpp"
#include "../table/sprites.h"
static FBlitter_32bppSimple iFBlitter_32bppSimple;
void Blitter_32bppSimple::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++) {
switch (mode) {
case BM_COLOUR_REMAP:
/* In case the m-channel is zero, do not remap this pixel in any way */
if (src->m == 0) {
if (src->a != 0) *dst = ComposeColourRGBA(src->r, src->g, src->b, src->a, *dst);
} else {
if (bp->remap[src->m] != 0) *dst = ComposeColourPA(this->LookupColourInPalette(bp->remap[src->m]), src->a, *dst);
}
break;
case BM_TRANSPARENT:
/* TODO -- We make an assumption here that the remap in fact is transparency, not some color.
* This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
* we produce a result the newgrf maker didn't expect ;) */
/* Make the current color a bit more black, so it looks like this image is transparent */
if (src->a != 0) *dst = MakeTransparent(*dst, 192);
break;
default:
if (src->a != 0) *dst = ComposeColourRGBA(src->r, src->g, src->b, src->a, *dst);
break;
}
dst++;
src += ScaleByZoom(1, zoom);
}
}
}
void Blitter_32bppSimple::DrawColorMappingRect(void *dst, int width, int height, int pal)
{
uint32 *udst = (uint32 *)dst;
if (pal == PALETTE_TO_TRANSPARENT) {
do {
for (int i = 0; i != width; i++) {
*udst = MakeTransparent(*udst, 154);
udst++;
}
udst = udst - width + _screen.pitch;
} while (--height);
return;
}
if (pal == PALETTE_TO_STRUCT_GREY) {
do {
for (int i = 0; i != width; i++) {
*udst = MakeGrey(*udst);
udst++;
}
udst = udst - width + _screen.pitch;
} while (--height);
return;
}
DEBUG(misc, 0, "32bpp blitter doesn't know how to draw this color table ('%d')", pal);
}
Sprite *Blitter_32bppSimple::Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator)
{
Sprite *dest_sprite;
SpriteLoader::CommonPixel *dst;
dest_sprite = (Sprite *)allocator(sizeof(*dest_sprite) + sprite->height * sprite->width * sizeof(SpriteLoader::CommonPixel));
dest_sprite->height = sprite->height;
dest_sprite->width = sprite->width;
dest_sprite->x_offs = sprite->x_offs;
dest_sprite->y_offs = sprite->y_offs;
dst = (SpriteLoader::CommonPixel *)dest_sprite->data;
memcpy(dst, sprite->data, sprite->height * sprite->width * sizeof(SpriteLoader::CommonPixel));
for (int i = 0; i < sprite->height * sprite->width; i++) {
if (dst[i].m != 0) {
/* Pre-convert the mapping channel to a RGB value */
uint color = this->LookupColourInPalette(dst[i].m);
dst[i].r = GB(color, 16, 8);
dst[i].g = GB(color, 8, 8);
dst[i].b = GB(color, 0, 8);
}
}
return dest_sprite;
}
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