|
|
/* $Id$ */
|
|
|
|
|
|
/*
|
|
|
* 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 32bpp_base.hpp Base for all 32 bits blitters. */
|
|
|
|
|
|
#ifndef BLITTER_32BPP_BASE_HPP
|
|
|
#define BLITTER_32BPP_BASE_HPP
|
|
|
|
|
|
#include "base.hpp"
|
|
|
#include "../core/bitmath_func.hpp"
|
|
|
#include "../core/math_func.hpp"
|
|
|
#include "../gfx_func.h"
|
|
|
|
|
|
/** Base for all 32bpp blitters. */
|
|
|
class Blitter_32bppBase : public Blitter {
|
|
|
public:
|
|
|
/* virtual */ uint8 GetScreenDepth() { return 32; }
|
|
|
/* virtual */ void *MoveTo(void *video, int x, int y);
|
|
|
/* virtual */ void SetPixel(void *video, int x, int y, uint8 colour);
|
|
|
/* virtual */ void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash);
|
|
|
/* virtual */ void DrawRect(void *video, int width, int height, uint8 colour);
|
|
|
/* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height);
|
|
|
/* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height);
|
|
|
/* virtual */ void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch);
|
|
|
/* virtual */ void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y);
|
|
|
/* virtual */ int BufferSize(int width, int height);
|
|
|
/* virtual */ void PaletteAnimate(const Palette &palette);
|
|
|
/* virtual */ Blitter::PaletteAnimation UsePaletteAnimation();
|
|
|
/* virtual */ int GetBytesPerPixel() { return 4; }
|
|
|
uint8 GetScreenDepth() override { return 32; }
|
|
|
void *MoveTo(void *video, int x, int y) override;
|
|
|
void SetPixel(void *video, int x, int y, uint8 colour) override;
|
|
|
void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash) override;
|
|
|
void DrawRect(void *video, int width, int height, uint8 colour) override;
|
|
|
void CopyFromBuffer(void *video, const void *src, int width, int height) override;
|
|
|
void CopyToBuffer(const void *video, void *dst, int width, int height) override;
|
|
|
void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch) override;
|
|
|
void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) override;
|
|
|
int BufferSize(int width, int height) override;
|
|
|
void PaletteAnimate(const Palette &palette) override;
|
|
|
Blitter::PaletteAnimation UsePaletteAnimation() override;
|
|
|
int GetBytesPerPixel() override { return 4; }
|
|
|
|
|
|
/**
|
|
|
* Look up the colour in the current palette.
|
|
|
*/
|
|
|
static inline Colour LookupColourInPalette(uint index)
|
|
|
{
|
|
|
return _cur_palette.palette[index];
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Compose a colour based on RGBA values and the current pixel value.
|
|
|
*/
|
|
|
static inline Colour ComposeColourRGBANoCheck(uint r, uint g, uint b, uint a, Colour current)
|
|
|
{
|
|
|
uint cr = current.r;
|
|
|
uint cg = current.g;
|
|
|
uint cb = current.b;
|
|
|
|
|
|
/* The 256 is wrong, it should be 255, but 256 is much faster... */
|
|
|
return Colour(
|
|
|
((int)(r - cr) * a) / 256 + cr,
|
|
|
((int)(g - cg) * a) / 256 + cg,
|
|
|
((int)(b - cb) * a) / 256 + cb);
|
|
|
}
|