godot/modules/etc1/image_etc.cpp
Rémi Verschelde 5dbf1809c6 A Whole New World (clang-format edition)
I can show you the code
Pretty, with proper whitespace
Tell me, coder, now when did
You last write readable code?

I can open your eyes
Make you see your bad indent
Force you to respect the style
The core devs agreed upon

A whole new world
A new fantastic code format
A de facto standard
With some sugar
Enforced with clang-format

A whole new world
A dazzling style we all dreamed of
And when we read it through
It's crystal clear
That now we're in a whole new world of code
2017-03-05 16:44:50 +01:00

182 lines
6.0 KiB
C++

/*************************************************************************/
/* image_etc.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "image_etc.h"
#include "image.h"
#include "os/copymem.h"
#include "print_string.h"
#include "rg_etc1.h"
static void _decompress_etc(Image *p_img) {
ERR_FAIL_COND(p_img->get_format() != Image::FORMAT_ETC);
int imgw = p_img->get_width();
int imgh = p_img->get_height();
PoolVector<uint8_t> src = p_img->get_data();
PoolVector<uint8_t> dst;
PoolVector<uint8_t>::Read r = src.read();
int mmc = p_img->get_mipmap_count();
for (int i = 0; i <= mmc; i++) {
dst.resize(dst.size() + imgw * imgh * 3);
const uint8_t *srcbr = &r[p_img->get_mipmap_offset(i)];
PoolVector<uint8_t>::Write w = dst.write();
uint8_t *wptr = &w[dst.size() - imgw * imgh * 3];
int bw = MAX(imgw / 4, 1);
int bh = MAX(imgh / 4, 1);
for (int y = 0; y < bh; y++) {
for (int x = 0; x < bw; x++) {
uint8_t block[4 * 4 * 4];
rg_etc1::unpack_etc1_block(srcbr, (unsigned int *)block);
srcbr += 8;
int maxx = MIN(imgw, 4);
int maxy = MIN(imgh, 4);
for (int yy = 0; yy < maxy; yy++) {
for (int xx = 0; xx < maxx; xx++) {
uint32_t src_ofs = (yy * 4 + xx) * 4;
uint32_t dst_ofs = ((y * 4 + yy) * imgw + x * 4 + xx) * 3;
wptr[dst_ofs + 0] = block[src_ofs + 0];
wptr[dst_ofs + 1] = block[src_ofs + 1];
wptr[dst_ofs + 2] = block[src_ofs + 2];
}
}
}
}
imgw = MAX(1, imgw / 2);
imgh = MAX(1, imgh / 2);
}
r = PoolVector<uint8_t>::Read();
//print_line("Re Creating ETC into regular image: w "+itos(p_img->get_width())+" h "+itos(p_img->get_height())+" mm "+itos(p_img->get_mipmaps()));
*p_img = Image(p_img->get_width(), p_img->get_height(), p_img->has_mipmaps(), Image::FORMAT_RGB8, dst);
if (p_img->has_mipmaps())
p_img->generate_mipmaps();
}
static void _compress_etc(Image *p_img) {
Image img = *p_img;
int imgw = img.get_width(), imgh = img.get_height();
ERR_FAIL_COND(nearest_power_of_2(imgw) != imgw || nearest_power_of_2(imgh) != imgh);
if (img.get_format() != Image::FORMAT_RGB8)
img.convert(Image::FORMAT_RGB8);
PoolVector<uint8_t> res_data;
PoolVector<uint8_t> dst_data;
PoolVector<uint8_t>::Read r = img.get_data().read();
int target_size = Image::get_image_data_size(p_img->get_width(), p_img->get_height(), Image::FORMAT_ETC, p_img->has_mipmaps() ? -1 : 0);
int mmc = p_img->has_mipmaps() ? Image::get_image_required_mipmaps(p_img->get_width(), p_img->get_height(), Image::FORMAT_ETC) : 0;
dst_data.resize(target_size);
int mc = 0;
int ofs = 0;
PoolVector<uint8_t>::Write w = dst_data.write();
rg_etc1::etc1_pack_params pp;
pp.m_quality = rg_etc1::cLowQuality;
for (int i = 0; i <= mmc; i++) {
int bw = MAX(imgw / 4, 1);
int bh = MAX(imgh / 4, 1);
const uint8_t *src = &r[img.get_mipmap_offset(i)];
int mmsize = MAX(bw, 1) * MAX(bh, 1) * 8;
uint8_t *dst = &w[ofs];
ofs += mmsize;
//print_line("bh: "+itos(bh)+" bw: "+itos(bw));
for (int y = 0; y < bh; y++) {
for (int x = 0; x < bw; x++) {
//print_line("x: "+itos(x)+" y: "+itos(y));
uint8_t block[4 * 4 * 4];
zeromem(block, 4 * 4 * 4);
uint8_t cblock[8];
int maxy = MIN(imgh, 4);
int maxx = MIN(imgw, 4);
for (int yy = 0; yy < maxy; yy++) {
for (int xx = 0; xx < maxx; xx++) {
uint32_t dst_ofs = (yy * 4 + xx) * 4;
uint32_t src_ofs = ((y * 4 + yy) * imgw + x * 4 + xx) * 3;
block[dst_ofs + 0] = src[src_ofs + 0];
block[dst_ofs + 1] = src[src_ofs + 1];
block[dst_ofs + 2] = src[src_ofs + 2];
block[dst_ofs + 3] = 255;
}
}
rg_etc1::pack_etc1_block(cblock, (const unsigned int *)block, pp);
for (int j = 0; j < 8; j++) {
dst[j] = cblock[j];
}
dst += 8;
}
}
imgw = MAX(1, imgw / 2);
imgh = MAX(1, imgh / 2);
mc++;
}
*p_img = Image(p_img->get_width(), p_img->get_height(), (mc - 1) ? true : false, Image::FORMAT_ETC, dst_data);
}
void _register_etc1_compress_func() {
rg_etc1::pack_etc1_block_init();
Image::_image_compress_etc_func = _compress_etc;
Image::_image_decompress_etc = _decompress_etc;
}