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252 lines
9.1 KiB
C++
252 lines
9.1 KiB
C++
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/**************************************************************************/
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/* image_compress_astcenc.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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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_compress_astcenc.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 <astcenc.h>
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void _compress_astc(Image *r_img, float p_lossy_quality, Image::ASTCFormat p_format) {
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uint64_t start_time = OS::get_singleton()->get_ticks_msec();
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// TODO: See how to handle lossy quality.
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Image::Format img_format = r_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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bool is_hdr = false;
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if ((img_format >= Image::FORMAT_RH) && (img_format <= Image::FORMAT_RGBE9995)) {
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is_hdr = true;
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r_img->convert(Image::FORMAT_RGBAF);
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} else {
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r_img->convert(Image::FORMAT_RGBA8);
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}
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// Determine encoder output format from our enum.
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Image::Format target_format = Image::FORMAT_RGBA8;
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astcenc_profile profile = ASTCENC_PRF_LDR;
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unsigned int block_x = 4;
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unsigned int block_y = 4;
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if (p_format == Image::ASTCFormat::ASTC_FORMAT_4x4) {
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if (is_hdr) {
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target_format = Image::FORMAT_ASTC_4x4_HDR;
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profile = ASTCENC_PRF_HDR;
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} else {
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target_format = Image::FORMAT_ASTC_4x4;
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}
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} else if (p_format == Image::ASTCFormat::ASTC_FORMAT_8x8) {
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if (is_hdr) {
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target_format = Image::FORMAT_ASTC_8x8_HDR;
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profile = ASTCENC_PRF_HDR;
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} else {
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target_format = Image::FORMAT_ASTC_8x8;
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}
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block_x = 8;
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block_y = 8;
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}
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// Compress image data and (if required) mipmaps.
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const bool mipmaps = r_img->has_mipmaps();
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int width = r_img->get_width();
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int height = r_img->get_height();
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print_verbose(vformat("astcenc: Encoding image size %dx%d to format %s%s.", width, height, Image::get_format_name(target_format), mipmaps ? ", with mipmaps" : ""));
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// Initialize astcenc.
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astcenc_config config;
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config.block_x = block_x;
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config.block_y = block_y;
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config.profile = profile;
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const float quality = ASTCENC_PRE_MEDIUM;
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astcenc_error status = astcenc_config_init(profile, block_x, block_y, block_x, quality, 0, &config);
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ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
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vformat("astcenc: Configuration initialization failed: %s.", astcenc_get_error_string(status)));
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// Context allocation.
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astcenc_context *context;
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const unsigned int thread_count = OS::get_singleton()->get_processor_count();
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status = astcenc_context_alloc(&config, thread_count, &context);
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ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
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vformat("astcenc: Context allocation failed: %s.", astcenc_get_error_string(status)));
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// Compress image.
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Vector<uint8_t> image_data = r_img->get_data();
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uint8_t *slices = image_data.ptrw();
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astcenc_image image;
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image.dim_x = width;
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image.dim_y = height;
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image.dim_z = 1;
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image.data_type = ASTCENC_TYPE_U8;
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if (is_hdr) {
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image.data_type = ASTCENC_TYPE_F32;
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}
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image.data = reinterpret_cast<void **>(&slices);
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// Compute the number of ASTC blocks in each dimension.
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unsigned int block_count_x = (width + block_x - 1) / block_x;
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unsigned int block_count_y = (height + block_y - 1) / block_y;
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size_t comp_len = block_count_x * block_count_y * 16;
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Vector<uint8_t> compressed_data;
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compressed_data.resize(comp_len);
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compressed_data.fill(0);
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const astcenc_swizzle swizzle = {
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ASTCENC_SWZ_R, ASTCENC_SWZ_G, ASTCENC_SWZ_B, ASTCENC_SWZ_A
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};
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status = astcenc_compress_image(context, &image, &swizzle, compressed_data.ptrw(), comp_len, 0);
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ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
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vformat("astcenc: ASTC image compression failed: %s.", astcenc_get_error_string(status)));
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// Replace original image with compressed one.
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r_img->set_data(width, height, mipmaps, target_format, compressed_data);
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print_verbose(vformat("astcenc: Encoding took %s ms.", rtos(OS::get_singleton()->get_ticks_msec() - start_time)));
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}
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void _decompress_astc(Image *r_img) {
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uint64_t start_time = OS::get_singleton()->get_ticks_msec();
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// Determine decompression parameters from image format.
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Image::Format img_format = r_img->get_format();
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bool is_hdr = false;
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unsigned int block_x = 0;
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unsigned int block_y = 0;
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if (img_format == Image::FORMAT_ASTC_4x4) {
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block_x = 4;
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block_y = 4;
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is_hdr = false;
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} else if (img_format == Image::FORMAT_ASTC_4x4_HDR) {
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block_x = 4;
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block_y = 4;
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is_hdr = true;
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} else if (img_format == Image::FORMAT_ASTC_8x8) {
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block_x = 8;
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block_y = 8;
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is_hdr = false;
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} else if (img_format == Image::FORMAT_ASTC_8x8_HDR) {
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block_x = 8;
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block_y = 8;
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is_hdr = true;
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} else {
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ERR_FAIL_MSG("astcenc: Cannot decompress Image with a non-ASTC format.");
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}
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// Initialize astcenc.
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astcenc_profile profile = ASTCENC_PRF_LDR;
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if (is_hdr) {
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profile = ASTCENC_PRF_HDR;
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}
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astcenc_config config;
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const float quality = ASTCENC_PRE_MEDIUM;
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astcenc_error status = astcenc_config_init(profile, block_x, block_y, block_x, quality, 0, &config);
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ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
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vformat("astcenc: Configuration initialization failed: %s.", astcenc_get_error_string(status)));
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// Context allocation.
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astcenc_context *context = nullptr;
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const unsigned int thread_count = OS::get_singleton()->get_processor_count();
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status = astcenc_context_alloc(&config, thread_count, &context);
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ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
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vformat("astcenc: Context allocation failed: %s.", astcenc_get_error_string(status)));
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// Decompress image.
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const bool mipmaps = r_img->has_mipmaps();
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int width = r_img->get_width();
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int height = r_img->get_height();
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astcenc_image image;
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image.dim_x = width;
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image.dim_y = height;
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image.dim_z = 1;
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image.data_type = ASTCENC_TYPE_U8;
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Image::Format target_format = Image::FORMAT_RGBA8;
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if (is_hdr) {
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target_format = Image::FORMAT_RGBAF;
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image.data_type = ASTCENC_TYPE_F32;
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}
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Vector<uint8_t> image_data = r_img->get_data();
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Vector<uint8_t> new_image_data;
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new_image_data.resize(Image::get_image_data_size(width, height, target_format, false));
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new_image_data.fill(0);
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uint8_t *slices = new_image_data.ptrw();
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image.data = reinterpret_cast<void **>(&slices);
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const astcenc_swizzle swizzle = {
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ASTCENC_SWZ_R, ASTCENC_SWZ_G, ASTCENC_SWZ_B, ASTCENC_SWZ_A
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};
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status = astcenc_decompress_image(context, image_data.ptr(), image_data.size(), &image, &swizzle, 0);
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ERR_FAIL_COND_MSG(status != ASTCENC_SUCCESS,
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vformat("astcenc: ASTC decompression failed: %s.", astcenc_get_error_string(status)));
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ERR_FAIL_COND_MSG(image.dim_z > 1,
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"astcenc: ASTC decompression failed because this is a 3D texture, which is not supported.");
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// Replace original image with compressed one.
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Image::Format image_format = Image::FORMAT_RGBA8;
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if (image.data_type == ASTCENC_TYPE_F32) {
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image_format = Image::FORMAT_RGBAF;
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} else if (image.data_type == ASTCENC_TYPE_U8) {
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image_format = Image::FORMAT_RGBA8;
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} else if (image.data_type == ASTCENC_TYPE_F16) {
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image_format = Image::FORMAT_RGBAH;
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} else {
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ERR_FAIL_MSG("astcenc: ASTC decompression failed with an unknown format.");
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}
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r_img->set_data(image.dim_x, image.dim_y, mipmaps, image_format, new_image_data);
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print_verbose(vformat("astcenc: Decompression took %s ms.", rtos(OS::get_singleton()->get_ticks_msec() - start_time)));
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}
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