300 lines
9.9 KiB
C++
300 lines
9.9 KiB
C++
/*************************************************************************/
|
|
/* image_compress_cvtt.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2018 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_compress_cvtt.h"
|
|
|
|
#include "print_string.h"
|
|
|
|
#include <ConvectionKernels.h>
|
|
|
|
void image_compress_cvtt(Image *p_image, float p_lossy_quality, Image::CompressSource p_source) {
|
|
|
|
if (p_image->get_format() >= Image::FORMAT_BPTC_RGBA)
|
|
return; //do not compress, already compressed
|
|
|
|
int w = p_image->get_width();
|
|
int h = p_image->get_height();
|
|
|
|
bool is_ldr = (p_image->get_format() <= Image::FORMAT_RGBA8);
|
|
bool is_hdr = (p_image->get_format() == Image::FORMAT_RGBH);
|
|
|
|
if (!is_ldr && !is_hdr) {
|
|
return; // Not a usable source format
|
|
}
|
|
|
|
cvtt::Options options;
|
|
uint32_t flags = cvtt::Flags::Fastest;
|
|
|
|
if (p_lossy_quality > 0.85)
|
|
flags = cvtt::Flags::Ultra;
|
|
else if (p_lossy_quality > 0.75)
|
|
flags = cvtt::Flags::Better;
|
|
else if (p_lossy_quality > 0.55)
|
|
flags = cvtt::Flags::Default;
|
|
else if (p_lossy_quality > 0.35)
|
|
flags = cvtt::Flags::Fast;
|
|
else if (p_lossy_quality > 0.15)
|
|
flags = cvtt::Flags::Faster;
|
|
|
|
flags |= cvtt::Flags::BC7_RespectPunchThrough;
|
|
|
|
if (p_source == Image::COMPRESS_SOURCE_NORMAL) {
|
|
flags |= cvtt::Flags::Uniform;
|
|
}
|
|
|
|
Image::Format target_format = Image::FORMAT_BPTC_RGBA;
|
|
|
|
bool is_signed = false;
|
|
if (is_hdr) {
|
|
PoolVector<uint8_t>::Read rb = p_image->get_data().read();
|
|
|
|
const uint16_t *source_data = reinterpret_cast<const uint16_t *>(&rb[0]);
|
|
int pixel_element_count = w * h * 3;
|
|
for (int i = 0; i < pixel_element_count; i++) {
|
|
if ((source_data[i] & 0x8000) != 0 && (source_data[i] & 0x7fff) != 0) {
|
|
is_signed = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
target_format = is_signed ? Image::FORMAT_BPTC_RGBF : Image::FORMAT_BPTC_RGBFU;
|
|
} else {
|
|
p_image->convert(Image::FORMAT_RGBA8); //still uses RGBA to convert
|
|
}
|
|
|
|
PoolVector<uint8_t>::Read rb = p_image->get_data().read();
|
|
|
|
PoolVector<uint8_t> data;
|
|
int target_size = Image::get_image_data_size(w, h, target_format, p_image->has_mipmaps());
|
|
int mm_count = p_image->has_mipmaps() ? Image::get_image_required_mipmaps(w, h, target_format) : 0;
|
|
data.resize(target_size);
|
|
int shift = Image::get_format_pixel_rshift(target_format);
|
|
|
|
PoolVector<uint8_t>::Write wb = data.write();
|
|
|
|
int dst_ofs = 0;
|
|
|
|
for (int i = 0; i <= mm_count; i++) {
|
|
|
|
int bw = w % 4 != 0 ? w + (4 - w % 4) : w;
|
|
int bh = h % 4 != 0 ? h + (4 - h % 4) : h;
|
|
|
|
int src_ofs = p_image->get_mipmap_offset(i);
|
|
|
|
const uint8_t *in_bytes = &rb[src_ofs];
|
|
uint8_t *out_bytes = &wb[dst_ofs];
|
|
|
|
cvtt::PixelBlockU8 input_blocks_ldr[cvtt::NumParallelBlocks];
|
|
cvtt::PixelBlockF16 input_blocks_hdr[cvtt::NumParallelBlocks];
|
|
|
|
int bytes_per_pixel = is_hdr ? 6 : 4;
|
|
|
|
for (int y_start = 0; y_start < h; y_start += 4) {
|
|
int y_end = y_start + 4;
|
|
|
|
for (int x_start = 0; x_start < w; x_start += 4 * cvtt::NumParallelBlocks) {
|
|
int x_end = x_start + 4 * cvtt::NumParallelBlocks;
|
|
|
|
for (int y = y_start; y < y_end; y++) {
|
|
int first_input_element = (y - y_start) * 4;
|
|
const uint8_t *row_start;
|
|
if (y >= h) {
|
|
row_start = in_bytes + (h - 1) * (w * bytes_per_pixel);
|
|
} else {
|
|
row_start = in_bytes + y * (w * bytes_per_pixel);
|
|
}
|
|
|
|
for (int x = x_start; x < x_end; x++) {
|
|
const uint8_t *pixel_start;
|
|
if (x >= w) {
|
|
pixel_start = row_start + (w - 1) * bytes_per_pixel;
|
|
} else {
|
|
pixel_start = row_start + x * bytes_per_pixel;
|
|
}
|
|
|
|
int block_index = (x - x_start) / 4;
|
|
int block_element = (x - x_start) % 4 + first_input_element;
|
|
if (is_hdr) {
|
|
memcpy(input_blocks_hdr[block_index].m_pixels[block_element], pixel_start, bytes_per_pixel);
|
|
input_blocks_hdr[block_index].m_pixels[block_element][3] = 0x3c00; // 1.0 (unused)
|
|
} else {
|
|
memcpy(input_blocks_ldr[block_index].m_pixels[block_element], pixel_start, bytes_per_pixel);
|
|
}
|
|
}
|
|
}
|
|
|
|
uint8_t output_blocks[16 * cvtt::NumParallelBlocks];
|
|
|
|
if (is_hdr) {
|
|
if (is_signed) {
|
|
cvtt::Kernels::EncodeBC6HS(output_blocks, input_blocks_hdr, options);
|
|
} else {
|
|
cvtt::Kernels::EncodeBC6HU(output_blocks, input_blocks_hdr, options);
|
|
}
|
|
} else {
|
|
cvtt::Kernels::EncodeBC7(output_blocks, input_blocks_ldr, options);
|
|
}
|
|
|
|
int num_real_blocks = ((w - x_start) + 3) / 4;
|
|
if (num_real_blocks > cvtt::NumParallelBlocks) {
|
|
num_real_blocks = cvtt::NumParallelBlocks;
|
|
}
|
|
|
|
memcpy(out_bytes, output_blocks, 16 * num_real_blocks);
|
|
out_bytes += 16 * num_real_blocks;
|
|
}
|
|
}
|
|
|
|
dst_ofs += (MAX(4, bw) * MAX(4, bh)) >> shift;
|
|
w >>= 1;
|
|
h >>= 1;
|
|
}
|
|
|
|
rb = PoolVector<uint8_t>::Read();
|
|
wb = PoolVector<uint8_t>::Write();
|
|
|
|
p_image->create(p_image->get_width(), p_image->get_height(), p_image->has_mipmaps(), target_format, data);
|
|
}
|
|
|
|
void image_decompress_cvtt(Image *p_image) {
|
|
|
|
Image::Format target_format;
|
|
bool is_signed = false;
|
|
bool is_hdr = false;
|
|
|
|
Image::Format input_format = p_image->get_format();
|
|
|
|
switch (input_format) {
|
|
case Image::FORMAT_BPTC_RGBA:
|
|
target_format = Image::FORMAT_RGBA8;
|
|
break;
|
|
case Image::FORMAT_BPTC_RGBF:
|
|
case Image::FORMAT_BPTC_RGBFU:
|
|
target_format = Image::FORMAT_RGBH;
|
|
is_signed = (input_format == Image::FORMAT_BPTC_RGBF);
|
|
is_hdr = true;
|
|
break;
|
|
default:
|
|
return; // Invalid input format
|
|
};
|
|
|
|
int w = p_image->get_width();
|
|
int h = p_image->get_height();
|
|
|
|
PoolVector<uint8_t>::Read rb = p_image->get_data().read();
|
|
|
|
PoolVector<uint8_t> data;
|
|
int target_size = Image::get_image_data_size(w, h, target_format, p_image->has_mipmaps());
|
|
int mm_count = p_image->get_mipmap_count();
|
|
data.resize(target_size);
|
|
int shift = Image::get_format_pixel_rshift(target_format);
|
|
|
|
PoolVector<uint8_t>::Write wb = data.write();
|
|
|
|
int bytes_per_pixel = is_hdr ? 6 : 4;
|
|
|
|
int dst_ofs = 0;
|
|
|
|
for (int i = 0; i <= mm_count; i++) {
|
|
|
|
int src_ofs = p_image->get_mipmap_offset(i);
|
|
|
|
const uint8_t *in_bytes = &rb[src_ofs];
|
|
uint8_t *out_bytes = &wb[dst_ofs];
|
|
|
|
cvtt::PixelBlockU8 output_blocks_ldr[cvtt::NumParallelBlocks];
|
|
cvtt::PixelBlockF16 output_blocks_hdr[cvtt::NumParallelBlocks];
|
|
|
|
for (int y_start = 0; y_start < h; y_start += 4) {
|
|
int y_end = y_start + 4;
|
|
|
|
for (int x_start = 0; x_start < w; x_start += 4 * cvtt::NumParallelBlocks) {
|
|
int x_end = x_start + 4 * cvtt::NumParallelBlocks;
|
|
|
|
uint8_t input_blocks[16 * cvtt::NumParallelBlocks];
|
|
memset(input_blocks, 0, sizeof(input_blocks));
|
|
|
|
int num_real_blocks = ((w - x_start) + 3) / 4;
|
|
if (num_real_blocks > cvtt::NumParallelBlocks) {
|
|
num_real_blocks = cvtt::NumParallelBlocks;
|
|
}
|
|
|
|
memcpy(input_blocks, in_bytes, 16 * num_real_blocks);
|
|
in_bytes += 16 * num_real_blocks;
|
|
|
|
if (is_hdr) {
|
|
if (is_signed) {
|
|
cvtt::Kernels::DecodeBC6HS(output_blocks_hdr, input_blocks);
|
|
} else {
|
|
cvtt::Kernels::DecodeBC6HU(output_blocks_hdr, input_blocks);
|
|
}
|
|
} else {
|
|
cvtt::Kernels::DecodeBC7(output_blocks_ldr, input_blocks);
|
|
}
|
|
|
|
for (int y = y_start; y < y_end; y++) {
|
|
int first_input_element = (y - y_start) * 4;
|
|
uint8_t *row_start;
|
|
if (y >= h) {
|
|
row_start = out_bytes + (h - 1) * (w * bytes_per_pixel);
|
|
} else {
|
|
row_start = out_bytes + y * (w * bytes_per_pixel);
|
|
}
|
|
|
|
for (int x = x_start; x < x_end; x++) {
|
|
uint8_t *pixel_start;
|
|
if (x >= w) {
|
|
pixel_start = row_start + (w - 1) * bytes_per_pixel;
|
|
} else {
|
|
pixel_start = row_start + x * bytes_per_pixel;
|
|
}
|
|
|
|
int block_index = (x - x_start) / 4;
|
|
int block_element = (x - x_start) % 4 + first_input_element;
|
|
if (is_hdr) {
|
|
memcpy(pixel_start, output_blocks_hdr[block_index].m_pixels[block_element], bytes_per_pixel);
|
|
} else {
|
|
memcpy(pixel_start, output_blocks_ldr[block_index].m_pixels[block_element], bytes_per_pixel);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
dst_ofs += w * h * bytes_per_pixel;
|
|
w >>= 1;
|
|
h >>= 1;
|
|
}
|
|
|
|
rb = PoolVector<uint8_t>::Read();
|
|
wb = PoolVector<uint8_t>::Write();
|
|
|
|
p_image->create(p_image->get_width(), p_image->get_height(), p_image->has_mipmaps(), target_format, data);
|
|
}
|