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Location: cpp/openttd-patchpack/source/src/blitter/8bpp_base.cpp - annotation
r28036:ac5b608a034a
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Update: Translations from eints
czech: 18 changes by vladoschreiner
german: 27 changes by Wuzzy2
czech: 18 changes by vladoschreiner
german: 27 changes by Wuzzy2
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* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file 8bpp_base.cpp Implementation of the base for all 8 bpp blitters. */
#include "../stdafx.h"
#include "../gfx_func.h"
#include "8bpp_base.hpp"
#include "common.hpp"
#include "../safeguards.h"
void Blitter_8bppBase::DrawColourMappingRect(void *dst, int width, int height, PaletteID pal)
{
const uint8_t *ctab = GetNonSprite(pal, SpriteType::Recolour) + 1;
do {
for (int i = 0; i != width; i++) *((uint8_t *)dst + i) = ctab[((uint8_t *)dst)[i]];
dst = (uint8_t *)dst + _screen.pitch;
} while (--height);
}
void *Blitter_8bppBase::MoveTo(void *video, int x, int y)
{
return (uint8_t *)video + x + y * _screen.pitch;
}
void Blitter_8bppBase::SetPixel(void *video, int x, int y, uint8_t colour)
{
*((uint8_t *)video + x + y * _screen.pitch) = colour;
}
void Blitter_8bppBase::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8_t colour, int width, int dash)
{
this->DrawLineGeneric(x, y, x2, y2, screen_width, screen_height, width, dash, [=](int x, int y) {
*((uint8_t *)video + x + y * _screen.pitch) = colour;
});
}
void Blitter_8bppBase::DrawRect(void *video, int width, int height, uint8_t colour)
{
do {
memset(video, colour, width);
video = (uint8_t *)video + _screen.pitch;
} while (--height);
}
void Blitter_8bppBase::CopyFromBuffer(void *video, const void *src, int width, int height)
{
uint8_t *dst = (uint8_t *)video;
const uint8_t *usrc = (const uint8_t *)src;
for (; height > 0; height--) {
memcpy(dst, usrc, width * sizeof(uint8_t));
usrc += width;
dst += _screen.pitch;
}
}
void Blitter_8bppBase::CopyToBuffer(const void *video, void *dst, int width, int height)
{
uint8_t *udst = (uint8_t *)dst;
const uint8_t *src = (const uint8_t *)video;
for (; height > 0; height--) {
memcpy(udst, src, width * sizeof(uint8_t));
src += _screen.pitch;
udst += width;
}
}
void Blitter_8bppBase::CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch)
{
uint8_t *udst = (uint8_t *)dst;
const uint8_t *src = (const uint8_t *)video;
for (; height > 0; height--) {
memcpy(udst, src, width * sizeof(uint8_t));
src += _screen.pitch;
udst += dst_pitch;
}
}
void Blitter_8bppBase::ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y)
{
const uint8_t *src;
uint8_t *dst;
if (scroll_y > 0) {
/* Calculate pointers */
dst = (uint8_t *)video + left + (top + height - 1) * _screen.pitch;
src = dst - scroll_y * _screen.pitch;
/* Decrease height and increase top */
top += scroll_y;
height -= scroll_y;
assert(height > 0);
/* Adjust left & width */
if (scroll_x >= 0) {
dst += scroll_x;
left += scroll_x;
width -= scroll_x;
} else {
src -= scroll_x;
width += scroll_x;
}
for (int h = height; h > 0; h--) {
memcpy(dst, src, width * sizeof(uint8_t));
src -= _screen.pitch;
dst -= _screen.pitch;
}
} else {
/* Calculate pointers */
dst = (uint8_t *)video + left + top * _screen.pitch;
src = dst - scroll_y * _screen.pitch;
/* Decrease height. (scroll_y is <=0). */
height += scroll_y;
assert(height > 0);
/* Adjust left & width */
if (scroll_x >= 0) {
dst += scroll_x;
left += scroll_x;
width -= scroll_x;
} else {
src -= scroll_x;
width += scroll_x;
}
/* the y-displacement may be 0 therefore we have to use memmove,
* because source and destination may overlap */
for (int h = height; h > 0; h--) {
memmove(dst, src, width * sizeof(uint8_t));
src += _screen.pitch;
dst += _screen.pitch;
}
}
}
size_t Blitter_8bppBase::BufferSize(uint width, uint height)
{
return static_cast<size_t>(width) * height;
}
void Blitter_8bppBase::PaletteAnimate(const Palette &)
{
/* Video backend takes care of the palette animation */
}
Blitter::PaletteAnimation Blitter_8bppBase::UsePaletteAnimation()
{
return Blitter::PALETTE_ANIMATION_VIDEO_BACKEND;
}
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