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Merge pull request #47917 from akien-mga/squish-decompress-only

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Import: Cleanup and optimize etcpak compression method
This commit is contained in:
Rémi Verschelde 2021-04-18 17:00:21 +02:00 committed by GitHub
commit dfe4feb188
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9 changed files with 108 additions and 85 deletions
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3
doc/classes/Image.xml
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@ -186,7 +186,8 @@
<return type="int" enum="Error">
</return>
<description>
Decompresses the image if it is compressed. Returns an error if decompress function is not available.
Decompresses the image if it is VRAM compressed in a supported format. Returns [constant OK] if the format is supported, otherwise [constant ERR_UNAVAILABLE].
[b]Note:[/b] The following formats can be decompressed: DXT, RGTC, BPTC, PVRTC1. The formats ETC1 and ETC2 are not supported.
</description>
</method>
<method name="detect_alpha" qualifiers="const">

150
modules/etcpak/image_etcpak.cpp → modules/etcpak/image_compress_etcpak.cpp
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@ -1,5 +1,5 @@
/*************************************************************************/
/* image_etcpak.cpp */
/* image_compress_etcpak.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
@ -28,21 +28,16 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "image_etcpak.h"
#include "image_compress_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) {
EtcpakType _determine_etc_type(Image::UsedChannels p_channels) {
switch (p_channels) {
case Image::USED_CHANNELS_L:
return EtcpakType::ETCPAK_TYPE_ETC1;
case Image::USED_CHANNELS_LA:
@ -60,8 +55,8 @@ EtcpakType _determine_etc_type(Image::UsedChannels p_source) {
}
}
EtcpakType _determine_dxt_type(Image::UsedChannels p_source) {
switch (p_source) {
EtcpakType _determine_dxt_type(Image::UsedChannels p_channels) {
switch (p_channels) {
case Image::USED_CHANNELS_L:
return EtcpakType::ETCPAK_TYPE_DXT1;
case Image::USED_CHANNELS_LA:
@ -78,93 +73,112 @@ EtcpakType _determine_dxt_type(Image::UsedChannels p_source) {
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_etc1(Image *r_img, float p_lossy_quality) {
_compress_etcpak(EtcpakType::ETCPAK_TYPE_ETC1, r_img, p_lossy_quality);
}
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();
void _compress_etc2(Image *r_img, float p_lossy_quality, Image::UsedChannels p_channels) {
EtcpakType type = _determine_etc_type(p_channels);
_compress_etcpak(type, r_img, p_lossy_quality);
}
void _compress_bc(Image *r_img, float p_lossy_quality, Image::UsedChannels p_channels) {
EtcpakType type = _determine_dxt_type(p_channels);
_compress_etcpak(type, r_img, p_lossy_quality);
}
void _compress_etcpak(EtcpakType p_compresstype, Image *r_img, float p_lossy_quality) {
uint64_t start_time = OS::get_singleton()->get_ticks_msec();
// TODO: See how to handle lossy quality.
Image::Format img_format = r_img->get_format();
if (img_format >= Image::FORMAT_DXT1) {
return; //do not compress, already compressed
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);
// Use RGBA8 to convert.
if (img_format != Image::FORMAT_RGBA8) {
r_img->convert(Image::FORMAT_RGBA8);
}
if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC1 || force_etc1_format) {
format = Image::FORMAT_ETC;
// Determine output format based on Etcpak type.
Image::Format target_format = Image::FORMAT_RGBA8;
if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC1) {
target_format = Image::FORMAT_ETC;
} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2) {
format = Image::FORMAT_ETC2_RGB8;
target_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();
target_format = Image::FORMAT_ETC2_RA_AS_RG;
r_img->convert_rg_to_ra_rgba8();
} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC2_ALPHA) {
format = Image::FORMAT_ETC2_RGBA8;
target_format = Image::FORMAT_ETC2_RGBA8;
} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT1) {
format = Image::FORMAT_DXT1;
target_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();
target_format = Image::FORMAT_DXT5_RA_AS_RG;
r_img->convert_rg_to_ra_rgba8();
} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5) {
format = Image::FORMAT_DXT5;
target_format = Image::FORMAT_DXT5;
} else {
ERR_FAIL();
ERR_FAIL_MSG("Invalid or unsupported Etcpak compression format.");
}
const bool mipmap = p_img->has_mipmaps();
print_verbose("Encoding format: " + Image::get_format_name(format));
// Compress image data and (if required) mipmaps.
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();
const bool mipmaps = r_img->has_mipmaps();
const int width = r_img->get_width();
const int height = r_img->get_height();
const uint8_t *src_read = r_img->get_data().ptr();
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);
print_verbose(vformat("ETCPAK: Encoding image size %dx%d to format %s.", width, height, Image::get_format_name(target_format)));
int dest_size = Image::get_image_data_size(width, height, target_format, mipmaps);
Vector<uint8_t> dest_data;
dest_data.resize(dest_size);
uint8_t *dest_write = dest_data.ptrw();
int mip_count = mipmaps ? Image::get_image_required_mipmaps(width, height, target_format) : 0;
for (int i = 0; i < mip_count + 1; i++) {
// Get write mip metrics for target image.
int mip_w, mip_h;
int mip_ofs = Image::get_image_mipmap_offset_and_dimensions(width, height, target_format, i, mip_w, mip_h);
// Ensure that mip offset is a multiple of 8 (etcpak expects uint64_t pointer).
ERR_FAIL_COND(mip_ofs % 8 != 0);
uint64_t *dest_mip_write = (uint64_t *)&dest_write[mip_ofs];
// Block size. Align stride to multiple of 4 (RGBA8).
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 blocks = mip_w * mip_h / 16;
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);
// Get mip data from source image for reading.
int src_mip_ofs = r_img->get_mipmap_offset(i);
const uint32_t *src_mip_read = (const uint32_t *)&src_read[src_mip_ofs];
if (p_compresstype == EtcpakType::ETCPAK_TYPE_ETC1) {
CompressEtc1RgbDither(src_mip_read, dest_mip_write, blocks, 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);
CompressEtc2Rgb(src_mip_read, dest_mip_write, blocks, 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);
CompressEtc2Rgba(src_mip_read, dest_mip_write, blocks, mip_w);
} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT1) {
CompressDxt1Dither(image_read, dst_write, mip_w * mip_h / 16, mip_w);
CompressDxt1Dither(src_mip_read, dest_mip_write, blocks, mip_w);
} else if (p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5 || p_compresstype == EtcpakType::ETCPAK_TYPE_DXT5_RA_AS_RG) {
CompressDxt5(src_mip_read, dest_mip_write, blocks, mip_w);
} else {
ERR_FAIL();
ERR_FAIL_MSG("Invalid or unsupported Etcpak compression format.");
}
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)));
// Replace original image with compressed one.
r_img->create(width, height, mipmaps, target_format, dest_data);
print_verbose(vformat("ETCPAK encode took %s ms.", rtos(OS::get_singleton()->get_ticks_msec() - start_time)));
}

17
modules/etcpak/image_etcpak.h → modules/etcpak/image_compress_etcpak.h
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@ -1,5 +1,5 @@
/*************************************************************************/
/* image_etcpak.h */
/* image_compress_etcpak.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
@ -28,8 +28,8 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef IMAGE_ETCPAK_H
#define IMAGE_ETCPAK_H
#ifndef IMAGE_COMPRESS_ETCPAK_H
#define IMAGE_COMPRESS_ETCPAK_H
#include "core/io/image.h"
@ -43,9 +43,10 @@ enum class EtcpakType {
ETCPAK_TYPE_DXT5_RA_AS_RG,
};
void _compress_etcpak(EtcpakType p_compresstype, Image *p_img, float p_lossy_quality, bool force_etc1_format, Image::UsedChannels p_channels);
void _compress_etc1(Image *p_img, float p_lossy_quality);
void _compress_etc2(Image *p_img, float p_lossy_quality, Image::UsedChannels p_source);
void _compress_bc(Image *p_img, float p_lossy_quality, Image::UsedChannels p_source);
void _compress_etc1(Image *r_img, float p_lossy_quality);
void _compress_etc2(Image *r_img, float p_lossy_quality, Image::UsedChannels p_channels);
void _compress_bc(Image *r_img, float p_lossy_quality, Image::UsedChannels p_channels);
#endif // IMAGE_ETCPAK_H
void _compress_etcpak(EtcpakType p_compresstype, Image *r_img, float p_lossy_quality);
#endif // IMAGE_COMPRESS_ETCPAK_H

2
modules/etcpak/register_types.cpp
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@ -30,7 +30,7 @@
#include "register_types.h"
#include "image_etcpak.h"
#include "image_compress_etcpak.h"
void register_etcpak_types() {
Image::_image_compress_etc1_func = _compress_etc1;

5
modules/etcpak/register_types.h
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@ -28,5 +28,10 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef ETCPAK_REGISTER_TYPES_H
#define ETCPAK_REGISTER_TYPES_H
void register_etcpak_types();
void unregister_etcpak_types();
#endif // ETCPAK_REGISTER_TYPES_H

4
modules/squish/image_compress_squish.cpp → modules/squish/image_decompress_squish.cpp
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@ -1,5 +1,5 @@
/*************************************************************************/
/* image_compress_squish.cpp */
/* image_decompress_squish.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
@ -28,7 +28,7 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "image_compress_squish.h"
#include "image_decompress_squish.h"
#include <squish.h>

8
modules/squish/image_compress_squish.h → modules/squish/image_decompress_squish.h
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@ -1,5 +1,5 @@
/*************************************************************************/
/* image_compress_squish.h */
/* image_decompress_squish.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
@ -28,11 +28,11 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef IMAGE_COMPRESS_SQUISH_H
#define IMAGE_COMPRESS_SQUISH_H
#ifndef IMAGE_DECOMPRESS_SQUISH_H
#define IMAGE_DECOMPRESS_SQUISH_H
#include "core/io/image.h"
void image_decompress_squish(Image *p_image);
#endif // IMAGE_COMPRESS_SQUISH_H
#endif // IMAGE_DECOMPRESS_SQUISH_H

3
modules/squish/register_types.cpp
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@ -29,7 +29,8 @@
/*************************************************************************/
#include "register_types.h"
#include "image_compress_squish.h"
#include "image_decompress_squish.h"
void register_squish_types() {
Image::_image_decompress_bc = image_decompress_squish;

1
thirdparty/README.md vendored
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@ -101,6 +101,7 @@ Files extracted from upstream source:
```
- `AUTHORS.txt` and `LICENSE.txt`
## fonts
- `NotoSans*.ttf`, `NotoNaskhArabicUI_Regular.ttf`: