diff options
Diffstat (limited to 'modules/etcpak/image_etcpak.cpp')
| -rw-r--r-- | modules/etcpak/image_etcpak.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/modules/etcpak/image_etcpak.cpp b/modules/etcpak/image_etcpak.cpp new file mode 100644 index 0000000000..251d2cd7b0 --- /dev/null +++ b/modules/etcpak/image_etcpak.cpp @@ -0,0 +1,170 @@ +/*************************************************************************/ +/* image_etcpak.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_etcpak.h" + +#include "core/os/copymem.h" +#include "core/os/os.h" +#include "core/string/print_string.h" + +#include "thirdparty/etcpak/ProcessDxtc.hpp" +#include "thirdparty/etcpak/ProcessRGB.hpp" + +// thresholds for the early compression-mode decision scheme in QuickETC2 +// which can be changed by the option -e +float ecmd_threshold[3] = { 0.03f, 0.09f, 0.38f }; + +EtcpakType _determine_etc_type(Image::UsedChannels p_source) { + switch (p_source) { + case Image::USED_CHANNELS_L: + return EtcpakType::ETCPAK_TYPE_ETC1; + case Image::USED_CHANNELS_LA: + return EtcpakType::ETCPAK_TYPE_ETC2_ALPHA; + case Image::USED_CHANNELS_R: + return EtcpakType::ETCPAK_TYPE_ETC2; + case Image::USED_CHANNELS_RG: + return EtcpakType::ETCPAK_TYPE_ETC2_RA_AS_RG; + case Image::USED_CHANNELS_RGB: + return EtcpakType::ETCPAK_TYPE_ETC2; + case Image::USED_CHANNELS_RGBA: + return EtcpakType::ETCPAK_TYPE_ETC2_ALPHA; + default: + return EtcpakType::ETCPAK_TYPE_ETC2_ALPHA; + } +} + +EtcpakType _determine_dxt_type(Image::UsedChannels p_source) { + switch (p_source) { + case Image::USED_CHANNELS_L: + return EtcpakType::ETCPAK_TYPE_DXT1; + case Image::USED_CHANNELS_LA: + return EtcpakType::ETCPAK_TYPE_DXT5; + case Image::USED_CHANNELS_R: + return EtcpakType::ETCPAK_TYPE_DXT5; + case Image::USED_CHANNELS_RG: + return EtcpakType::ETCPAK_TYPE_DXT5_RA_AS_RG; + case Image::USED_CHANNELS_RGB: + return EtcpakType::ETCPAK_TYPE_DXT5; + case Image::USED_CHANNELS_RGBA: + return EtcpakType::ETCPAK_TYPE_DXT5; + default: + return EtcpakType::ETCPAK_TYPE_DXT5; + } +} +void _compress_etc2(Image *p_img, float p_lossy_quality, Image::UsedChannels p_source) { + EtcpakType type = _determine_etc_type(p_source); + _compress_etcpak(type, p_img, p_lossy_quality, false, p_source); +} +void _compress_bc(Image *p_img, float p_lossy_quality, Image::UsedChannels p_source) { + EtcpakType type = _determine_dxt_type(p_source); + _compress_etcpak(type, p_img, p_lossy_quality, false, p_source); +} +void _compress_etc1(Image *p_img, float p_lossy_quality) { + _compress_etcpak(EtcpakType::ETCPAK_TYPE_ETC1, p_img, p_lossy_quality, true, Image::USED_CHANNELS_RGB); +} + +void _compress_etcpak(EtcpakType p_compresstype, Image *p_img, float p_lossy_quality, bool force_etc1_format, Image::UsedChannels p_channels) { + uint64_t t = OS::get_singleton()->get_ticks_msec(); + Image::Format img_format = p_img->get_format(); + + if (img_format >= Image::FORMAT_DXT1) { + return; //do not compress, already compressed + } + + if (img_format > Image::FORMAT_RGBA8) { + // TODO: we should be able to handle FORMAT_RGBA4444 and FORMAT_RGBA5551 eventually + return; + } + + Image::Format format = Image::FORMAT_RGBA8; + if (p_img->get_format() != Image::FORMAT_RGBA8) { + p_img->convert(Image::FORMAT_RGBA8); + } + if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC1 || force_etc1_format) { + format = Image::FORMAT_ETC; + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2) { + format = Image::FORMAT_ETC2_RGB8; + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_RA_AS_RG) { + format = Image::FORMAT_ETC2_RA_AS_RG; + p_img->convert_rg_to_ra_rgba8(); + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_ALPHA) { + format = Image::FORMAT_ETC2_RGBA8; + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT1) { + format = Image::FORMAT_DXT1; + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5_RA_AS_RG) { + format = Image::FORMAT_DXT5_RA_AS_RG; + p_img->convert_rg_to_ra_rgba8(); + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5) { + format = Image::FORMAT_DXT5; + } else { + ERR_FAIL(); + } + + const bool mipmap = p_img->has_mipmaps(); + print_verbose("Encoding format: " + Image::get_format_name(format)); + + Ref<Image> new_img; + new_img.instance(); + new_img->create(p_img->get_width(), p_img->get_height(), mipmap, format); + Vector<uint8_t> data = new_img->get_data(); + uint8_t *wr = data.ptrw(); + + Ref<Image> image = p_img->duplicate(); + int mmc = 1 + (mipmap ? Image::get_image_required_mipmaps(new_img->get_width(), new_img->get_height(), format) : 0); + for (int i = 0; i < mmc; i++) { + int ofs, size, mip_w, mip_h; + new_img->get_mipmap_offset_size_and_dimensions(i, ofs, size, mip_w, mip_h); + mip_w = (mip_w + 3) & ~3; + mip_h = (mip_h + 3) & ~3; + Vector<uint8_t> dst_data; + dst_data.resize(size); + int mipmap_ofs = image->get_mipmap_offset(i); + + const uint32_t *image_read = (const uint32_t *)&image->get_data().ptr()[mipmap_ofs]; + uint64_t *dst_write = (uint64_t *)dst_data.ptrw(); + if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC1 || force_etc1_format) { + CompressEtc1RgbDither(image_read, dst_write, mip_w * mip_h / 16, mip_w); + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2 || p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_RA_AS_RG) { + CompressEtc2Rgb(image_read, dst_write, mip_w * mip_h / 16, mip_w); + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_ALPHA) { + CompressEtc2Rgba(image_read, dst_write, mip_w * mip_h / 16, mip_w); + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5 || p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5_RA_AS_RG) { + CompressDxt5(image_read, dst_write, mip_w * mip_h / 16, mip_w); + } else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT1) { + CompressDxt1Dither(image_read, dst_write, mip_w * mip_h / 16, mip_w); + } else { + ERR_FAIL(); + } + copymem(&wr[ofs], dst_data.ptr(), size); + } + p_img->create(new_img->get_width(), new_img->get_height(), mipmap, format, data); + + print_verbose(vformat("ETCPAK encode took %s ms.", rtos(OS::get_singleton()->get_ticks_msec() - t))); +} |