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d840165a32
- `etc` module was renamed to `etcpak` and modified to use the new library. - PKM importer is removed in the process, it's obsolete. - Old library `etc2comp` is removed. - S3TC compression no longer done via `squish` (but decompression still is). - Slight modifications to etcpak sources for MinGW compatibility, to fix LLVM `-Wc++11-narrowing` errors, and to allow using vendored or system libpng. Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
171 lines
7.6 KiB
C++
171 lines
7.6 KiB
C++
/*************************************************************************/
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/* image_etcpak.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "image_etcpak.h"
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#include "core/os/copymem.h"
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#include "core/os/os.h"
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#include "core/string/print_string.h"
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#include "thirdparty/etcpak/ProcessDxtc.hpp"
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#include "thirdparty/etcpak/ProcessRGB.hpp"
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// thresholds for the early compression-mode decision scheme in QuickETC2
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// which can be changed by the option -e
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float ecmd_threshold[3] = { 0.03f, 0.09f, 0.38f };
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EtcpakType _determine_etc_type(Image::UsedChannels p_source) {
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switch (p_source) {
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case Image::USED_CHANNELS_L:
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return EtcpakType::ETCPAK_TYPE_ETC1;
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case Image::USED_CHANNELS_LA:
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return EtcpakType::ETCPAK_TYPE_ETC2_ALPHA;
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case Image::USED_CHANNELS_R:
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return EtcpakType::ETCPAK_TYPE_ETC2;
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case Image::USED_CHANNELS_RG:
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return EtcpakType::ETCPAK_TYPE_ETC2_RA_AS_RG;
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case Image::USED_CHANNELS_RGB:
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return EtcpakType::ETCPAK_TYPE_ETC2;
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case Image::USED_CHANNELS_RGBA:
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return EtcpakType::ETCPAK_TYPE_ETC2_ALPHA;
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default:
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return EtcpakType::ETCPAK_TYPE_ETC2_ALPHA;
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}
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}
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EtcpakType _determine_dxt_type(Image::UsedChannels p_source) {
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switch (p_source) {
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case Image::USED_CHANNELS_L:
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return EtcpakType::ETCPAK_TYPE_DXT1;
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case Image::USED_CHANNELS_LA:
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return EtcpakType::ETCPAK_TYPE_DXT5;
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case Image::USED_CHANNELS_R:
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return EtcpakType::ETCPAK_TYPE_DXT5;
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case Image::USED_CHANNELS_RG:
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return EtcpakType::ETCPAK_TYPE_DXT5_RA_AS_RG;
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case Image::USED_CHANNELS_RGB:
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return EtcpakType::ETCPAK_TYPE_DXT5;
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case Image::USED_CHANNELS_RGBA:
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return EtcpakType::ETCPAK_TYPE_DXT5;
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default:
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return EtcpakType::ETCPAK_TYPE_DXT5;
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}
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}
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void _compress_etc2(Image *p_img, float p_lossy_quality, Image::UsedChannels p_source) {
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EtcpakType type = _determine_etc_type(p_source);
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_compress_etcpak(type, p_img, p_lossy_quality, false, p_source);
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}
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void _compress_bc(Image *p_img, float p_lossy_quality, Image::UsedChannels p_source) {
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EtcpakType type = _determine_dxt_type(p_source);
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_compress_etcpak(type, p_img, p_lossy_quality, false, p_source);
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}
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void _compress_etc1(Image *p_img, float p_lossy_quality) {
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_compress_etcpak(EtcpakType::ETCPAK_TYPE_ETC1, p_img, p_lossy_quality, true, Image::USED_CHANNELS_RGB);
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}
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void _compress_etcpak(EtcpakType p_compresstype, Image *p_img, float p_lossy_quality, bool force_etc1_format, Image::UsedChannels p_channels) {
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uint64_t t = OS::get_singleton()->get_ticks_msec();
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Image::Format img_format = p_img->get_format();
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if (img_format >= Image::FORMAT_DXT1) {
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return; //do not compress, already compressed
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}
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if (img_format > Image::FORMAT_RGBA8) {
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// TODO: we should be able to handle FORMAT_RGBA4444 and FORMAT_RGBA5551 eventually
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return;
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}
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Image::Format format = Image::FORMAT_RGBA8;
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if (p_img->get_format() != Image::FORMAT_RGBA8) {
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p_img->convert(Image::FORMAT_RGBA8);
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}
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if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC1 || force_etc1_format) {
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format = Image::FORMAT_ETC;
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2) {
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format = Image::FORMAT_ETC2_RGB8;
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_RA_AS_RG) {
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format = Image::FORMAT_ETC2_RA_AS_RG;
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p_img->convert_rg_to_ra_rgba8();
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_ALPHA) {
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format = Image::FORMAT_ETC2_RGBA8;
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT1) {
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format = Image::FORMAT_DXT1;
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5_RA_AS_RG) {
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format = Image::FORMAT_DXT5_RA_AS_RG;
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p_img->convert_rg_to_ra_rgba8();
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5) {
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format = Image::FORMAT_DXT5;
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} else {
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ERR_FAIL();
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}
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const bool mipmap = p_img->has_mipmaps();
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print_verbose("Encoding format: " + Image::get_format_name(format));
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Ref<Image> new_img;
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new_img.instance();
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new_img->create(p_img->get_width(), p_img->get_height(), mipmap, format);
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Vector<uint8_t> data = new_img->get_data();
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uint8_t *wr = data.ptrw();
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Ref<Image> image = p_img->duplicate();
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int mmc = 1 + (mipmap ? Image::get_image_required_mipmaps(new_img->get_width(), new_img->get_height(), format) : 0);
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for (int i = 0; i < mmc; i++) {
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int ofs, size, mip_w, mip_h;
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new_img->get_mipmap_offset_size_and_dimensions(i, ofs, size, mip_w, mip_h);
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mip_w = (mip_w + 3) & ~3;
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mip_h = (mip_h + 3) & ~3;
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Vector<uint8_t> dst_data;
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dst_data.resize(size);
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int mipmap_ofs = image->get_mipmap_offset(i);
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const uint32_t *image_read = (const uint32_t *)&image->get_data().ptr()[mipmap_ofs];
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uint64_t *dst_write = (uint64_t *)dst_data.ptrw();
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if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC1 || force_etc1_format) {
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CompressEtc1RgbDither(image_read, dst_write, mip_w * mip_h / 16, mip_w);
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2 || p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_RA_AS_RG) {
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CompressEtc2Rgb(image_read, dst_write, mip_w * mip_h / 16, mip_w);
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_ALPHA) {
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CompressEtc2Rgba(image_read, dst_write, mip_w * mip_h / 16, mip_w);
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5 || p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5_RA_AS_RG) {
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CompressDxt5(image_read, dst_write, mip_w * mip_h / 16, mip_w);
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} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT1) {
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CompressDxt1Dither(image_read, dst_write, mip_w * mip_h / 16, mip_w);
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} else {
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ERR_FAIL();
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}
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copymem(&wr[ofs], dst_data.ptr(), size);
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}
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p_img->create(new_img->get_width(), new_img->get_height(), mipmap, format, data);
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print_verbose(vformat("ETCPAK encode took %s ms.", rtos(OS::get_singleton()->get_ticks_msec() - t)));
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}
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