diff options
Diffstat (limited to 'modules/squish/image_decompress_squish.cpp')
| -rw-r--r-- | modules/squish/image_decompress_squish.cpp | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/modules/squish/image_decompress_squish.cpp b/modules/squish/image_decompress_squish.cpp new file mode 100644 index 0000000000..1450b0fe88 --- /dev/null +++ b/modules/squish/image_decompress_squish.cpp @@ -0,0 +1,78 @@ +/*************************************************************************/ +/* image_decompress_squish.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* 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 target_format = Image::FORMAT_RGBA8; + Vector<uint8_t> data; + int 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 = Image::FORMAT_MAX; + if (p_image->get_format() == Image::FORMAT_DXT1) { + squish_flags = squish::kDxt1; + } else if (p_image->get_format() == Image::FORMAT_DXT3) { + squish_flags = squish::kDxt3; + } else if (p_image->get_format() == Image::FORMAT_DXT5 || p_image->get_format() == Image::FORMAT_DXT5_RA_AS_RG) { + squish_flags = squish::kDxt5; + } else if (p_image->get_format() == Image::FORMAT_RGTC_R) { + squish_flags = squish::kBc4; + } else if (p_image->get_format() == Image::FORMAT_RGTC_RG) { + squish_flags = squish::kBc5; + } else { + ERR_FAIL_MSG("Squish: Can't decompress unknown format: " + itos(p_image->get_format()) + "."); + return; + } + + for (int i = 0; i <= mm_count; i++) { + int src_ofs = 0, mipmap_size = 0, mipmap_w = 0, mipmap_h = 0; + p_image->get_mipmap_offset_size_and_dimensions(i, src_ofs, mipmap_size, mipmap_w, mipmap_h); + int 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->create(p_image->get_width(), p_image->get_height(), p_image->has_mipmaps(), target_format, data); + + if (p_image->get_format() == Image::FORMAT_DXT5_RA_AS_RG) { + p_image->convert_ra_rgba8_to_rg(); + } +} |