author | rubidium |
Sun, 25 May 2008 19:17:03 +0000 | |
changeset 9354 | 845e07db4549 |
parent 9111 | 48ce04029fe4 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file 32bpp_simple.cpp Implementation of the simple 32 bpp blitter. */ |
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#include "../stdafx.h" |
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#include "../gfx_func.h" |
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#include "../zoom_func.h" |
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#include "../debug.h" |
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#include "32bpp_simple.hpp" |
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#include "../table/sprites.h" |
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static FBlitter_32bppSimple iFBlitter_32bppSimple; |
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void Blitter_32bppSimple::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) |
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{ |
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const SpriteLoader::CommonPixel *src, *src_line; |
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uint32 *dst, *dst_line; |
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/* Find where to start reading in the source sprite */ |
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src_line = (const SpriteLoader::CommonPixel *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom); |
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dst_line = (uint32 *)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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switch (mode) { |
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case BM_COLOUR_REMAP: |
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/* In case the m-channel is zero, do not remap this pixel in any way */ |
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if (src->m == 0) { |
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if (src->a != 0) *dst = ComposeColourRGBA(src->r, src->g, src->b, src->a, *dst); |
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} else { |
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if (bp->remap[src->m] != 0) *dst = ComposeColourPA(this->LookupColourInPalette(bp->remap[src->m]), src->a, *dst); |
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} |
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break; |
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case BM_TRANSPARENT: |
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/* TODO -- We make an assumption here that the remap in fact is transparency, not some color. |
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* This is never a problem with the code we produce, but newgrfs can make it fail... or at least: |
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* we produce a result the newgrf maker didn't expect ;) */ |
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/* Make the current color a bit more black, so it looks like this image is transparent */ |
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if (src->a != 0) *dst = MakeTransparent(*dst, 192); |
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break; |
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default: |
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if (src->a != 0) *dst = ComposeColourRGBA(src->r, src->g, src->b, src->a, *dst); |
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break; |
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} |
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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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void Blitter_32bppSimple::DrawColorMappingRect(void *dst, int width, int height, int pal) |
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{ |
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uint32 *udst = (uint32 *)dst; |
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if (pal == PALETTE_TO_TRANSPARENT) { |
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do { |
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for (int i = 0; i != width; i++) { |
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*udst = MakeTransparent(*udst, 154); |
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udst++; |
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} |
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udst = udst - width + _screen.pitch; |
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} while (--height); |
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return; |
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} |
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if (pal == PALETTE_TO_STRUCT_GREY) { |
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do { |
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for (int i = 0; i != width; i++) { |
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*udst = MakeGrey(*udst); |
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udst++; |
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} |
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udst = udst - width + _screen.pitch; |
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} while (--height); |
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return; |
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} |
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DEBUG(misc, 0, "32bpp blitter doesn't know how to draw this color table ('%d')", pal); |
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} |
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Sprite *Blitter_32bppSimple::Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator) |
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{ |
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Sprite *dest_sprite; |
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SpriteLoader::CommonPixel *dst; |
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dest_sprite = (Sprite *)allocator(sizeof(*dest_sprite) + sprite->height * sprite->width * sizeof(SpriteLoader::CommonPixel)); |
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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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dst = (SpriteLoader::CommonPixel *)dest_sprite->data; |
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memcpy(dst, sprite->data, sprite->height * sprite->width * sizeof(SpriteLoader::CommonPixel)); |
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for (int i = 0; i < sprite->height * sprite->width; i++) { |
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if (dst[i].m != 0) { |
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/* Pre-convert the mapping channel to a RGB value */ |
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uint color = this->LookupColourInPalette(dst[i].m); |
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dst[i].r = GB(color, 16, 8); |
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108 |
dst[i].g = GB(color, 8, 8); |
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dst[i].b = GB(color, 0, 8); |
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110 |
} |
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} |
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112 |
|
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return dest_sprite; |
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} |