mirror of
https://github.com/godotengine/godot.git
synced 2024-12-21 10:25:24 +08:00
97 lines
3.9 KiB
C++
97 lines
3.9 KiB
C++
/**************************************************************************/
|
|
/* image_decompress_squish.cpp */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 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_decompress_squish.h"
|
|
|
|
#include <squish.h>
|
|
|
|
void image_decompress_squish(Image *p_image) {
|
|
int w = p_image->get_width();
|
|
int h = p_image->get_height();
|
|
|
|
Image::Format source_format = p_image->get_format();
|
|
Image::Format target_format = Image::FORMAT_RGBA8;
|
|
|
|
Vector<uint8_t> data;
|
|
int64_t target_size = Image::get_image_data_size(w, h, target_format, p_image->has_mipmaps());
|
|
int mm_count = p_image->get_mipmap_count();
|
|
data.resize(target_size);
|
|
|
|
const uint8_t *rb = p_image->get_data().ptr();
|
|
uint8_t *wb = data.ptrw();
|
|
|
|
int squish_flags = 0;
|
|
|
|
switch (source_format) {
|
|
case Image::FORMAT_DXT1:
|
|
squish_flags = squish::kDxt1;
|
|
break;
|
|
|
|
case Image::FORMAT_DXT3:
|
|
squish_flags = squish::kDxt3;
|
|
break;
|
|
|
|
case Image::FORMAT_DXT5:
|
|
case Image::FORMAT_DXT5_RA_AS_RG:
|
|
squish_flags = squish::kDxt5;
|
|
break;
|
|
|
|
case Image::FORMAT_RGTC_R:
|
|
squish_flags = squish::kBc4;
|
|
break;
|
|
|
|
case Image::FORMAT_RGTC_RG:
|
|
squish_flags = squish::kBc5;
|
|
break;
|
|
|
|
default:
|
|
ERR_FAIL_MSG("Squish: Can't decompress unknown format: " + itos(p_image->get_format()) + ".");
|
|
break;
|
|
}
|
|
|
|
for (int i = 0; i <= mm_count; i++) {
|
|
int64_t src_ofs = 0, mipmap_size = 0;
|
|
int mipmap_w = 0, mipmap_h = 0;
|
|
p_image->get_mipmap_offset_size_and_dimensions(i, src_ofs, mipmap_size, mipmap_w, mipmap_h);
|
|
|
|
int64_t dst_ofs = Image::get_image_mipmap_offset(p_image->get_width(), p_image->get_height(), target_format, i);
|
|
squish::DecompressImage(&wb[dst_ofs], w, h, &rb[src_ofs], squish_flags);
|
|
|
|
w >>= 1;
|
|
h >>= 1;
|
|
}
|
|
|
|
p_image->set_data(p_image->get_width(), p_image->get_height(), p_image->has_mipmaps(), target_format, data);
|
|
|
|
if (source_format == Image::FORMAT_DXT5_RA_AS_RG) {
|
|
p_image->convert_ra_rgba8_to_rg();
|
|
}
|
|
}
|