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Location: cpp/openttd-patchpack/source/src/blitter/32bpp_base.cpp
r25339:28c15705f6a3
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | /*
* 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.cpp Implementation of base for 32 bpp blitters. */
#include "../stdafx.h"
#include "32bpp_base.hpp"
#include "common.hpp"
#include "../safeguards.h"
void *Blitter_32bppBase::MoveTo(void *video, int x, int y)
{
return (uint32 *)video + x + y * _screen.pitch;
}
void Blitter_32bppBase::SetPixel(void *video, int x, int y, uint8 colour)
{
*((Colour *)video + x + y * _screen.pitch) = LookupColourInPalette(colour);
}
void Blitter_32bppBase::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash)
{
const Colour c = LookupColourInPalette(colour);
this->DrawLineGeneric(x, y, x2, y2, screen_width, screen_height, width, dash, [=](int x, int y) {
*((Colour *)video + x + y * _screen.pitch) = c;
});
}
void Blitter_32bppBase::DrawRect(void *video, int width, int height, uint8 colour)
{
Colour colour32 = LookupColourInPalette(colour);
do {
Colour *dst = (Colour *)video;
for (int i = width; i > 0; i--) {
*dst = colour32;
dst++;
}
video = (uint32 *)video + _screen.pitch;
} while (--height);
}
void Blitter_32bppBase::CopyFromBuffer(void *video, const void *src, int width, int height)
{
uint32 *dst = (uint32 *)video;
const uint32 *usrc = (const uint32 *)src;
for (; height > 0; height--) {
memcpy(dst, usrc, width * sizeof(uint32));
usrc += width;
dst += _screen.pitch;
}
}
void Blitter_32bppBase::CopyToBuffer(const void *video, void *dst, int width, int height)
{
uint32 *udst = (uint32 *)dst;
const uint32 *src = (const uint32 *)video;
for (; height > 0; height--) {
memcpy(udst, src, width * sizeof(uint32));
src += _screen.pitch;
udst += width;
}
}
void Blitter_32bppBase::CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch)
{
uint32 *udst = (uint32 *)dst;
const uint32 *src = (const uint32 *)video;
for (; height > 0; height--) {
memcpy(udst, src, width * sizeof(uint32));
src += _screen.pitch;
udst += dst_pitch;
}
}
void Blitter_32bppBase::ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y)
{
const uint32 *src;
uint32 *dst;
if (scroll_y > 0) {
/* Calculate pointers */
dst = (uint32 *)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(uint32));
src -= _screen.pitch;
dst -= _screen.pitch;
}
} else {
/* Calculate pointers */
dst = (uint32 *)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(uint32));
src += _screen.pitch;
dst += _screen.pitch;
}
}
}
int Blitter_32bppBase::BufferSize(int width, int height)
{
return width * height * sizeof(uint32);
}
void Blitter_32bppBase::PaletteAnimate(const Palette &palette)
{
/* By default, 32bpp doesn't have palette animation */
}
Colour Blitter_32bppBase::ReallyAdjustBrightness(Colour colour, uint8 brightness)
{
assert(DEFAULT_BRIGHTNESS == 1 << 7);
uint64 combined = (((uint64) colour.r) << 32) | (((uint64) colour.g) << 16) | ((uint64) colour.b);
combined *= brightness;
uint16 r = GB(combined, 39, 9);
uint16 g = GB(combined, 23, 9);
uint16 b = GB(combined, 7, 9);
if ((combined & 0x800080008000L) == 0L) {
return Colour(r, g, b, colour.a);
}
uint16 ob = 0;
/* Sum overbright */
if (r > 255) ob += r - 255;
if (g > 255) ob += g - 255;
if (b > 255) ob += b - 255;
/* Reduce overbright strength */
ob /= 2;
return Colour(
r >= 255 ? 255 : std::min(r + ob * (255 - r) / 256, 255),
g >= 255 ? 255 : std::min(g + ob * (255 - g) / 256, 255),
b >= 255 ? 255 : std::min(b + ob * (255 - b) / 256, 255),
colour.a);
}
Blitter::PaletteAnimation Blitter_32bppBase::UsePaletteAnimation()
{
return Blitter::PALETTE_ANIMATION_NONE;
}
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