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Merge pull request #47835 from mortarroad/master-lossless-webp

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Implement lossless WebP encoding
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Rémi Verschelde 2021-06-11 19:34:36 +02:00 • committed by GitHub
commit 50d1e0ea99
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9 changed files with 114 additions and 37 deletions
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15
editor/import/resource_importer_texture.cpp
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@ -218,14 +218,21 @@ void ResourceImporterTexture::get_import_options(List<ImportOption> *r_options,
void ResourceImporterTexture::save_to_stex_format(FileAccess *f, const Ref<Image> &p_image, CompressMode p_compress_mode, Image::UsedChannels p_channels, Image::CompressMode p_compress_format, float p_lossy_quality) {
switch (p_compress_mode) {
case COMPRESS_LOSSLESS: {
f->store_32(StreamTexture2D::DATA_FORMAT_LOSSLESS);
bool lossless_force_png = ProjectSettings::get_singleton()->get("rendering/textures/lossless_compression/force_png");
bool use_webp = !lossless_force_png && p_image->get_width() <= 16383 && p_image->get_height() <= 16383; // WebP has a size limit
f->store_32(use_webp ? StreamTexture2D::DATA_FORMAT_WEBP : StreamTexture2D::DATA_FORMAT_PNG);
f->store_16(p_image->get_width());
f->store_16(p_image->get_height());
f->store_32(p_image->get_mipmap_count());
f->store_32(p_image->get_format());
for (int i = 0; i < p_image->get_mipmap_count() + 1; i++) {
Vector<uint8_t> data = Image::lossless_packer(p_image->get_image_from_mipmap(i));
Vector<uint8_t> data;
if (use_webp) {
data = Image::webp_lossless_packer(p_image->get_image_from_mipmap(i));
} else {
data = Image::png_packer(p_image->get_image_from_mipmap(i));
}
int data_len = data.size();
f->store_32(data_len);
@ -235,14 +242,14 @@ void ResourceImporterTexture::save_to_stex_format(FileAccess *f, const Ref<Image
} break;
case COMPRESS_LOSSY: {
f->store_32(StreamTexture2D::DATA_FORMAT_LOSSY);
f->store_32(StreamTexture2D::DATA_FORMAT_WEBP);
f->store_16(p_image->get_width());
f->store_16(p_image->get_height());
f->store_32(p_image->get_mipmap_count());
f->store_32(p_image->get_format());
for (int i = 0; i < p_image->get_mipmap_count() + 1; i++) {
Vector<uint8_t> data = Image::lossy_packer(p_image->get_image_from_mipmap(i), p_lossy_quality);
Vector<uint8_t> data = Image::webp_lossy_packer(p_image->get_image_from_mipmap(i), p_lossy_quality);
int data_len = data.size();
f->store_32(data_len);