mirror of
https://github.com/godotengine/godot
synced 2024-09-04 21:28:28 +00:00
291 lines
11 KiB
C++
291 lines
11 KiB
C++
/**************************************************************************/
|
|
/* image_compress_astcenc.cpp */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* 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_compress_astcenc.h"
|
|
|
|
#include "core/os/os.h"
|
|
#include "core/string/print_string.h"
|
|
|
|
#include <astcenc.h>
|
|
|
|
void _compress_astc(Image *r_img, Image::ASTCFormat p_format) {
|
|
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.
|
|
}
|
|
|
|
bool is_hdr = false;
|
|
if ((img_format >= Image::FORMAT_RH) && (img_format <= Image::FORMAT_RGBE9995)) {
|
|
is_hdr = true;
|
|
r_img->convert(Image::FORMAT_RGBAF);
|
|
} else {
|
|
r_img->convert(Image::FORMAT_RGBA8);
|
|
}
|
|
|
|
// Determine encoder output format from our enum.
|
|
|
|
Image::Format target_format = Image::FORMAT_RGBA8;
|
|
astcenc_profile profile = ASTCENC_PRF_LDR;
|
|
unsigned int block_x = 4;
|
|
unsigned int block_y = 4;
|
|
|
|
if (p_format == Image::ASTCFormat::ASTC_FORMAT_4x4) {
|
|
if (is_hdr) {
|
|
target_format = Image::FORMAT_ASTC_4x4_HDR;
|
|
profile = ASTCENC_PRF_HDR;
|
|
} else {
|
|
target_format = Image::FORMAT_ASTC_4x4;
|
|
}
|
|
} else if (p_format == Image::ASTCFormat::ASTC_FORMAT_8x8) {
|
|
if (is_hdr) {
|
|
target_format = Image::FORMAT_ASTC_8x8_HDR;
|
|
profile = ASTCENC_PRF_HDR;
|
|
} else {
|
|
target_format = Image::FORMAT_ASTC_8x8;
|
|
}
|
|
block_x = 8;
|
|
block_y = 8;
|
|
}
|
|
|
|
// Compress image data and (if required) mipmaps.
|
|
|
|
const bool mipmaps = r_img->has_mipmaps();
|
|
int width = r_img->get_width();
|
|
int height = r_img->get_height();
|
|
int required_width = (width % block_x) != 0 ? width + (block_x - (width % block_x)) : width;
|
|
int required_height = (height % block_y) != 0 ? height + (block_y - (height % block_y)) : height;
|
|
|
|
if (width != required_width || height != required_height) {
|
|
// Resize texture to fit block size.
|
|
r_img->resize(required_width, required_height);
|
|
width = required_width;
|
|
height = required_height;
|
|
}
|
|
|
|
print_verbose(vformat("astcenc: Encoding image size %dx%d to format %s%s.", width, height, Image::get_format_name(target_format), mipmaps ? ", with mipmaps" : ""));
|
|
|
|
// Initialize astcenc.
|
|
|
|
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();
|
|
|
|
astcenc_config config;
|
|
config.block_x = block_x;
|
|
config.block_y = block_y;
|
|
config.profile = profile;
|
|
|
|
const float quality = ASTCENC_PRE_MEDIUM;
|
|
astcenc_error status = astcenc_config_init(profile, block_x, block_y, 1, quality, 0, &config);
|
|
ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
|
|
vformat("astcenc: Configuration initialization failed: %s.", astcenc_get_error_string(status)));
|
|
|
|
// Context allocation.
|
|
|
|
astcenc_context *context;
|
|
const unsigned int thread_count = 1; // Godot compresses multiple images each on a thread, which is more efficient for large amount of images imported.
|
|
status = astcenc_context_alloc(&config, thread_count, &context);
|
|
ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
|
|
vformat("astcenc: Context allocation failed: %s.", astcenc_get_error_string(status)));
|
|
|
|
Vector<uint8_t> image_data = r_img->get_data();
|
|
|
|
int mip_count = mipmaps ? Image::get_image_required_mipmaps(width, height, target_format) : 0;
|
|
for (int i = 0; i < mip_count + 1; i++) {
|
|
int src_mip_w, src_mip_h;
|
|
int src_ofs = Image::get_image_mipmap_offset_and_dimensions(width, height, r_img->get_format(), i, src_mip_w, src_mip_h);
|
|
|
|
const uint8_t *slices = &image_data.ptr()[src_ofs];
|
|
|
|
int dst_mip_w, dst_mip_h;
|
|
int dst_ofs = Image::get_image_mipmap_offset_and_dimensions(width, height, target_format, i, dst_mip_w, dst_mip_h);
|
|
// Ensure that mip offset is a multiple of 8 (etcpak expects uint64_t pointer).
|
|
ERR_FAIL_COND(dst_ofs % 8 != 0);
|
|
uint8_t *dest_mip_write = (uint8_t *)&dest_write[dst_ofs];
|
|
|
|
// Compress image.
|
|
|
|
astcenc_image image;
|
|
image.dim_x = src_mip_w;
|
|
image.dim_y = src_mip_h;
|
|
image.dim_z = 1;
|
|
image.data_type = ASTCENC_TYPE_U8;
|
|
if (is_hdr) {
|
|
image.data_type = ASTCENC_TYPE_F32;
|
|
}
|
|
image.data = (void **)(&slices);
|
|
|
|
// Compute the number of ASTC blocks in each dimension.
|
|
unsigned int block_count_x = (src_mip_w + block_x - 1) / block_x;
|
|
unsigned int block_count_y = (src_mip_h + block_y - 1) / block_y;
|
|
size_t comp_len = block_count_x * block_count_y * 16;
|
|
|
|
const astcenc_swizzle swizzle = {
|
|
ASTCENC_SWZ_R, ASTCENC_SWZ_G, ASTCENC_SWZ_B, ASTCENC_SWZ_A
|
|
};
|
|
|
|
status = astcenc_compress_image(context, &image, &swizzle, dest_mip_write, comp_len, 0);
|
|
|
|
ERR_BREAK_MSG(status != ASTCENC_SUCCESS,
|
|
vformat("astcenc: ASTC image compression failed: %s.", astcenc_get_error_string(status)));
|
|
astcenc_compress_reset(context);
|
|
}
|
|
|
|
astcenc_context_free(context);
|
|
|
|
// Replace original image with compressed one.
|
|
|
|
r_img->set_data(width, height, mipmaps, target_format, dest_data);
|
|
|
|
print_verbose(vformat("astcenc: Encoding took %d ms.", OS::get_singleton()->get_ticks_msec() - start_time));
|
|
}
|
|
|
|
void _decompress_astc(Image *r_img) {
|
|
uint64_t start_time = OS::get_singleton()->get_ticks_msec();
|
|
|
|
// Determine decompression parameters from image format.
|
|
|
|
Image::Format img_format = r_img->get_format();
|
|
bool is_hdr = false;
|
|
unsigned int block_x = 0;
|
|
unsigned int block_y = 0;
|
|
if (img_format == Image::FORMAT_ASTC_4x4) {
|
|
block_x = 4;
|
|
block_y = 4;
|
|
is_hdr = false;
|
|
} else if (img_format == Image::FORMAT_ASTC_4x4_HDR) {
|
|
block_x = 4;
|
|
block_y = 4;
|
|
is_hdr = true;
|
|
} else if (img_format == Image::FORMAT_ASTC_8x8) {
|
|
block_x = 8;
|
|
block_y = 8;
|
|
is_hdr = false;
|
|
} else if (img_format == Image::FORMAT_ASTC_8x8_HDR) {
|
|
block_x = 8;
|
|
block_y = 8;
|
|
is_hdr = true;
|
|
} else {
|
|
ERR_FAIL_MSG("astcenc: Cannot decompress Image with a non-ASTC format.");
|
|
}
|
|
|
|
// Initialize astcenc.
|
|
|
|
astcenc_profile profile = ASTCENC_PRF_LDR;
|
|
if (is_hdr) {
|
|
profile = ASTCENC_PRF_HDR;
|
|
}
|
|
astcenc_config config;
|
|
const float quality = ASTCENC_PRE_MEDIUM;
|
|
|
|
astcenc_error status = astcenc_config_init(profile, block_x, block_y, 1, quality, 0, &config);
|
|
ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
|
|
vformat("astcenc: Configuration initialization failed: %s.", astcenc_get_error_string(status)));
|
|
|
|
// Context allocation.
|
|
|
|
astcenc_context *context = nullptr;
|
|
const unsigned int thread_count = 1;
|
|
|
|
status = astcenc_context_alloc(&config, thread_count, &context);
|
|
ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
|
|
vformat("astcenc: Context allocation failed: %s.", astcenc_get_error_string(status)));
|
|
|
|
Image::Format target_format = is_hdr ? Image::FORMAT_RGBAF : Image::FORMAT_RGBA8;
|
|
|
|
const bool mipmaps = r_img->has_mipmaps();
|
|
int width = r_img->get_width();
|
|
int height = r_img->get_height();
|
|
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();
|
|
|
|
// Decompress image.
|
|
|
|
Vector<uint8_t> image_data = r_img->get_data();
|
|
int mip_count = mipmaps ? Image::get_image_required_mipmaps(width, height, target_format) : 0;
|
|
|
|
for (int i = 0; i < mip_count + 1; i++) {
|
|
int src_mip_w, src_mip_h;
|
|
|
|
int src_ofs = Image::get_image_mipmap_offset_and_dimensions(width, height, r_img->get_format(), i, src_mip_w, src_mip_h);
|
|
const uint8_t *src_data = &image_data.ptr()[src_ofs];
|
|
int src_size;
|
|
if (i == mip_count) {
|
|
src_size = image_data.size() - src_ofs;
|
|
} else {
|
|
int auxw, auxh;
|
|
src_size = Image::get_image_mipmap_offset_and_dimensions(width, height, r_img->get_format(), i + 1, auxw, auxh) - src_ofs;
|
|
}
|
|
|
|
int dst_mip_w, dst_mip_h;
|
|
int dst_ofs = Image::get_image_mipmap_offset_and_dimensions(width, height, target_format, i, dst_mip_w, dst_mip_h);
|
|
// Ensure that mip offset is a multiple of 8 (etcpak expects uint64_t pointer).
|
|
ERR_FAIL_COND(dst_ofs % 8 != 0);
|
|
uint8_t *dest_mip_write = (uint8_t *)&dest_write[dst_ofs];
|
|
|
|
astcenc_image image;
|
|
image.dim_x = dst_mip_w;
|
|
image.dim_y = dst_mip_h;
|
|
image.dim_z = 1;
|
|
image.data_type = ASTCENC_TYPE_U8;
|
|
if (is_hdr) {
|
|
target_format = Image::FORMAT_RGBAF;
|
|
image.data_type = ASTCENC_TYPE_F32;
|
|
}
|
|
|
|
image.data = (void **)(&dest_mip_write);
|
|
|
|
const astcenc_swizzle swizzle = {
|
|
ASTCENC_SWZ_R, ASTCENC_SWZ_G, ASTCENC_SWZ_B, ASTCENC_SWZ_A
|
|
};
|
|
|
|
status = astcenc_decompress_image(context, src_data, src_size, &image, &swizzle, 0);
|
|
ERR_BREAK_MSG(status != ASTCENC_SUCCESS,
|
|
vformat("astcenc: ASTC decompression failed: %s.", astcenc_get_error_string(status)));
|
|
ERR_BREAK_MSG(image.dim_z > 1,
|
|
"astcenc: ASTC decompression failed because this is a 3D texture, which is not supported.");
|
|
astcenc_compress_reset(context);
|
|
}
|
|
astcenc_context_free(context);
|
|
|
|
// Replace original image with compressed one.
|
|
|
|
r_img->set_data(width, height, mipmaps, target_format, dest_data);
|
|
|
|
print_verbose(vformat("astcenc: Decompression took %d ms.", OS::get_singleton()->get_ticks_msec() - start_time));
|
|
}
|