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godot/core/image.cpp

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/*************************************************************************/
/* image.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.h"
#include "core/io/image_loader.h"
#include "core/os/copymem.h"
#include "hash_map.h"
#include "math_funcs.h"
#include "print_string.h"
#include "io/resource_loader.h"
#include "thirdparty/misc/hq2x.h"
#include <stdio.h>
const char *Image::format_names[Image::FORMAT_MAX] = {
"Lum8", //luminance
"LumAlpha8", //luminance-alpha
"Red8",
"RedGreen",
"RGB8",
"RGBA8",
"RGBA4444",
"RGBA5551",
"RFloat", //float
"RGFloat",
"RGBFloat",
"RGBAFloat",
"RHalf", //half float
"RGHalf",
"RGBHalf",
"RGBAHalf",
"RGBE9995",
"DXT1 RGB8", //s3tc
"DXT3 RGBA8",
"DXT5 RGBA8",
"RGTC Red8",
"RGTC RedGreen8",
"BPTC_RGBA",
"BPTC_RGBF",
"BPTC_RGBFU",
"PVRTC2", //pvrtc
"PVRTC2A",
"PVRTC4",
"PVRTC4A",
"ETC", //etc1
"ETC2_R11", //etc2
"ETC2_R11S", //signed", NOT srgb.
"ETC2_RG11",
"ETC2_RG11S",
"ETC2_RGB8",
"ETC2_RGBA8",
"ETC2_RGB8A1",
};
SavePNGFunc Image::save_png_func = NULL;
void Image::_put_pixelb(int p_x, int p_y, uint32_t p_pixelsize, uint8_t *p_data, const uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixelsize;
for (uint32_t i = 0; i < p_pixelsize; i++) {
p_data[ofs + i] = p_pixel[i];
}
}
void Image::_get_pixelb(int p_x, int p_y, uint32_t p_pixelsize, const uint8_t *p_data, uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixelsize;
for (uint32_t i = 0; i < p_pixelsize; i++) {
p_pixel[i] = p_data[ofs + i];
}
}
int Image::get_format_pixel_size(Format p_format) {
switch (p_format) {
case FORMAT_L8:
return 1; //luminance
case FORMAT_LA8:
return 2; //luminance-alpha
case FORMAT_R8: return 1;
case FORMAT_RG8: return 2;
case FORMAT_RGB8: return 3;
case FORMAT_RGBA8: return 4;
case FORMAT_RGBA4444: return 2;
case FORMAT_RGBA5551: return 2;
case FORMAT_RF:
return 4; //float
case FORMAT_RGF: return 8;
case FORMAT_RGBF: return 12;
case FORMAT_RGBAF: return 16;
case FORMAT_RH:
return 2; //half float
case FORMAT_RGH: return 4;
case FORMAT_RGBH: return 6;
case FORMAT_RGBAH: return 8;
case FORMAT_RGBE9995: return 4;
case FORMAT_DXT1:
return 1; //s3tc bc1
case FORMAT_DXT3:
return 1; //bc2
case FORMAT_DXT5:
return 1; //bc3
case FORMAT_RGTC_R:
return 1; //bc4
case FORMAT_RGTC_RG:
return 1; //bc5
case FORMAT_BPTC_RGBA:
return 1; //btpc bc6h
case FORMAT_BPTC_RGBF:
return 1; //float /
case FORMAT_BPTC_RGBFU:
return 1; //unsigned float
case FORMAT_PVRTC2:
return 1; //pvrtc
case FORMAT_PVRTC2A: return 1;
case FORMAT_PVRTC4: return 1;
case FORMAT_PVRTC4A: return 1;
case FORMAT_ETC:
return 1; //etc1
case FORMAT_ETC2_R11:
return 1; //etc2
case FORMAT_ETC2_R11S:
return 1; //signed: return 1; NOT srgb.
case FORMAT_ETC2_RG11: return 1;
case FORMAT_ETC2_RG11S: return 1;
case FORMAT_ETC2_RGB8: return 1;
case FORMAT_ETC2_RGBA8: return 1;
case FORMAT_ETC2_RGB8A1: return 1;
case FORMAT_MAX: {
}
}
return 0;
}
void Image::get_format_min_pixel_size(Format p_format, int &r_w, int &r_h) {
switch (p_format) {
case FORMAT_DXT1: //s3tc bc1
case FORMAT_DXT3: //bc2
case FORMAT_DXT5: //bc3
case FORMAT_RGTC_R: //bc4
case FORMAT_RGTC_RG: { //bc5 case case FORMAT_DXT1:
r_w = 4;
r_h = 4;
} break;
case FORMAT_PVRTC2:
case FORMAT_PVRTC2A: {
r_w = 16;
r_h = 8;
} break;
case FORMAT_PVRTC4A:
case FORMAT_PVRTC4: {
r_w = 8;
r_h = 8;
} break;
case FORMAT_ETC: {
r_w = 4;
r_h = 4;
} break;
case FORMAT_BPTC_RGBA:
case FORMAT_BPTC_RGBF:
case FORMAT_BPTC_RGBFU: {
r_w = 4;
r_h = 4;
} break;
case FORMAT_ETC2_R11: //etc2
case FORMAT_ETC2_R11S: //signed: NOT srgb.
case FORMAT_ETC2_RG11:
case FORMAT_ETC2_RG11S:
case FORMAT_ETC2_RGB8:
case FORMAT_ETC2_RGBA8:
case FORMAT_ETC2_RGB8A1: {
r_w = 4;
r_h = 4;
} break;
default: {
r_w = 1;
r_h = 1;
} break;
}
}
int Image::get_format_pixel_rshift(Format p_format) {
if (p_format == FORMAT_DXT1 || p_format == FORMAT_RGTC_R || p_format == FORMAT_PVRTC4 || p_format == FORMAT_PVRTC4A || p_format == FORMAT_ETC || p_format == FORMAT_ETC2_R11 || p_format == FORMAT_ETC2_R11S || p_format == FORMAT_ETC2_RGB8 || p_format == FORMAT_ETC2_RGB8A1)
return 1;
else if (p_format == FORMAT_PVRTC2 || p_format == FORMAT_PVRTC2A)
return 2;
else
return 0;
}
int Image::get_format_block_size(Format p_format) {
switch (p_format) {
case FORMAT_DXT1: //s3tc bc1
case FORMAT_DXT3: //bc2
case FORMAT_DXT5: //bc3
case FORMAT_RGTC_R: //bc4
case FORMAT_RGTC_RG: { //bc5 case case FORMAT_DXT1:
return 4;
} break;
case FORMAT_PVRTC2:
case FORMAT_PVRTC2A: {
return 4;
} break;
case FORMAT_PVRTC4A:
case FORMAT_PVRTC4: {
return 4;
} break;
case FORMAT_ETC: {
return 4;
} break;
case FORMAT_BPTC_RGBA:
case FORMAT_BPTC_RGBF:
case FORMAT_BPTC_RGBFU: {
return 4;
} break;
case FORMAT_ETC2_R11: //etc2
case FORMAT_ETC2_R11S: //signed: NOT srgb.
case FORMAT_ETC2_RG11:
case FORMAT_ETC2_RG11S:
case FORMAT_ETC2_RGB8:
case FORMAT_ETC2_RGBA8:
case FORMAT_ETC2_RGB8A1: {
return 4;
} break;
default: {
}
}
return 1;
}
void Image::_get_mipmap_offset_and_size(int p_mipmap, int &r_offset, int &r_width, int &r_height) const {
int w = width;
int h = height;
int ofs = 0;
int pixel_size = get_format_pixel_size(format);
int pixel_rshift = get_format_pixel_rshift(format);
int block = get_format_block_size(format);
int minw, minh;
get_format_min_pixel_size(format, minw, minh);
for (int i = 0; i < p_mipmap; i++) {
int bw = w % block != 0 ? w + (block - w % block) : w;
int bh = h % block != 0 ? h + (block - h % block) : h;
int s = bw * bh;
s *= pixel_size;
s >>= pixel_rshift;
ofs += s;
w = MAX(minw, w >> 1);
h = MAX(minh, h >> 1);
}
r_offset = ofs;
r_width = w;
r_height = h;
}
int Image::get_mipmap_offset(int p_mipmap) const {
ERR_FAIL_INDEX_V(p_mipmap, get_mipmap_count() + 1, -1);
int ofs, w, h;
_get_mipmap_offset_and_size(p_mipmap, ofs, w, h);
return ofs;
}
void Image::get_mipmap_offset_and_size(int p_mipmap, int &r_ofs, int &r_size) const {
int ofs, w, h;
_get_mipmap_offset_and_size(p_mipmap, ofs, w, h);
int ofs2;
_get_mipmap_offset_and_size(p_mipmap + 1, ofs2, w, h);
r_ofs = ofs;
r_size = ofs2 - ofs;
}
void Image::get_mipmap_offset_size_and_dimensions(int p_mipmap, int &r_ofs, int &r_size, int &w, int &h) const {
int ofs;
_get_mipmap_offset_and_size(p_mipmap, ofs, w, h);
int ofs2, w2, h2;
_get_mipmap_offset_and_size(p_mipmap + 1, ofs2, w2, h2);
r_ofs = ofs;
r_size = ofs2 - ofs;
}
int Image::get_width() const {
return width;
}
int Image::get_height() const {
return height;
}
Vector2 Image::get_size() const {
return Vector2(width, height);
}
bool Image::has_mipmaps() const {
return mipmaps;
}
int Image::get_mipmap_count() const {
if (mipmaps)
return get_image_required_mipmaps(width, height, format);
else
return 0;
}
//using template generates perfectly optimized code due to constant expression reduction and unused variable removal present in all compilers
template <uint32_t read_bytes, bool read_alpha, uint32_t write_bytes, bool write_alpha, bool read_gray, bool write_gray>
static void _convert(int p_width, int p_height, const uint8_t *p_src, uint8_t *p_dst) {
uint32_t max_bytes = MAX(read_bytes, write_bytes);
for (int y = 0; y < p_height; y++) {
for (int x = 0; x < p_width; x++) {
const uint8_t *rofs = &p_src[((y * p_width) + x) * (read_bytes + (read_alpha ? 1 : 0))];
uint8_t *wofs = &p_dst[((y * p_width) + x) * (write_bytes + (write_alpha ? 1 : 0))];
uint8_t rgba[4];
if (read_gray) {
rgba[0] = rofs[0];
rgba[1] = rofs[0];
rgba[2] = rofs[0];
} else {
for (uint32_t i = 0; i < max_bytes; i++) {
rgba[i] = (i < read_bytes) ? rofs[i] : 0;
}
}
if (read_alpha || write_alpha) {
rgba[3] = read_alpha ? rofs[read_bytes] : 255;
}
if (write_gray) {
//TODO: not correct grayscale, should use fixed point version of actual weights
wofs[0] = uint8_t((uint16_t(rofs[0]) + uint16_t(rofs[1]) + uint16_t(rofs[2])) / 3);
} else {
for (uint32_t i = 0; i < write_bytes; i++) {
wofs[i] = rgba[i];
}
}
if (write_alpha) {
wofs[write_bytes] = rgba[3];
}
}
}
}
void Image::convert(Format p_new_format) {
if (data.size() == 0)
return;
if (p_new_format == format)
return;
if (format > FORMAT_RGBE9995 || p_new_format > FORMAT_RGBE9995) {
ERR_EXPLAIN("Cannot convert to <-> from compressed formats. Use compress() and decompress() instead.");
ERR_FAIL();
} else if (format > FORMAT_RGBA8 || p_new_format > FORMAT_RGBA8) {
//use put/set pixel which is slower but works with non byte formats
Image new_img(width, height, 0, p_new_format);
lock();
new_img.lock();
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
new_img.set_pixel(i, j, get_pixel(i, j));
}
}
unlock();
new_img.unlock();
if (has_mipmaps()) {
new_img.generate_mipmaps();
}
_copy_internals_from(new_img);
return;
}
Image new_img(width, height, 0, p_new_format);
PoolVector<uint8_t>::Read r = data.read();
PoolVector<uint8_t>::Write w = new_img.data.write();
const uint8_t *rptr = r.ptr();
uint8_t *wptr = w.ptr();
int conversion_type = format | p_new_format << 8;
switch (conversion_type) {
case FORMAT_L8 | (FORMAT_LA8 << 8): _convert<1, false, 1, true, true, true>(width, height, rptr, wptr); break;
case FORMAT_L8 | (FORMAT_R8 << 8): _convert<1, false, 1, false, true, false>(width, height, rptr, wptr); break;
case FORMAT_L8 | (FORMAT_RG8 << 8): _convert<1, false, 2, false, true, false>(width, height, rptr, wptr); break;
case FORMAT_L8 | (FORMAT_RGB8 << 8): _convert<1, false, 3, false, true, false>(width, height, rptr, wptr); break;
case FORMAT_L8 | (FORMAT_RGBA8 << 8): _convert<1, false, 3, true, true, false>(width, height, rptr, wptr); break;
case FORMAT_LA8 | (FORMAT_L8 << 8): _convert<1, true, 1, false, true, true>(width, height, rptr, wptr); break;
case FORMAT_LA8 | (FORMAT_R8 << 8): _convert<1, true, 1, false, true, false>(width, height, rptr, wptr); break;
case FORMAT_LA8 | (FORMAT_RG8 << 8): _convert<1, true, 2, false, true, false>(width, height, rptr, wptr); break;
case FORMAT_LA8 | (FORMAT_RGB8 << 8): _convert<1, true, 3, false, true, false>(width, height, rptr, wptr); break;
case FORMAT_LA8 | (FORMAT_RGBA8 << 8): _convert<1, true, 3, true, true, false>(width, height, rptr, wptr); break;
case FORMAT_R8 | (FORMAT_L8 << 8): _convert<1, false, 1, false, false, true>(width, height, rptr, wptr); break;
case FORMAT_R8 | (FORMAT_LA8 << 8): _convert<1, false, 1, true, false, true>(width, height, rptr, wptr); break;
case FORMAT_R8 | (FORMAT_RG8 << 8): _convert<1, false, 2, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_R8 | (FORMAT_RGB8 << 8): _convert<1, false, 3, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_R8 | (FORMAT_RGBA8 << 8): _convert<1, false, 3, true, false, false>(width, height, rptr, wptr); break;
case FORMAT_RG8 | (FORMAT_L8 << 8): _convert<2, false, 1, false, false, true>(width, height, rptr, wptr); break;
case FORMAT_RG8 | (FORMAT_LA8 << 8): _convert<2, false, 1, true, false, true>(width, height, rptr, wptr); break;
case FORMAT_RG8 | (FORMAT_R8 << 8): _convert<2, false, 1, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_RG8 | (FORMAT_RGB8 << 8): _convert<2, false, 3, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_RG8 | (FORMAT_RGBA8 << 8): _convert<2, false, 3, true, false, false>(width, height, rptr, wptr); break;
case FORMAT_RGB8 | (FORMAT_L8 << 8): _convert<3, false, 1, false, false, true>(width, height, rptr, wptr); break;
case FORMAT_RGB8 | (FORMAT_LA8 << 8): _convert<3, false, 1, true, false, true>(width, height, rptr, wptr); break;
case FORMAT_RGB8 | (FORMAT_R8 << 8): _convert<3, false, 1, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_RGB8 | (FORMAT_RG8 << 8): _convert<3, false, 2, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_RGB8 | (FORMAT_RGBA8 << 8): _convert<3, false, 3, true, false, false>(width, height, rptr, wptr); break;
case FORMAT_RGBA8 | (FORMAT_L8 << 8): _convert<3, true, 1, false, false, true>(width, height, rptr, wptr); break;
case FORMAT_RGBA8 | (FORMAT_LA8 << 8): _convert<3, true, 1, true, false, true>(width, height, rptr, wptr); break;
case FORMAT_RGBA8 | (FORMAT_R8 << 8): _convert<3, true, 1, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_RGBA8 | (FORMAT_RG8 << 8): _convert<3, true, 2, false, false, false>(width, height, rptr, wptr); break;
case FORMAT_RGBA8 | (FORMAT_RGB8 << 8): _convert<3, true, 3, false, false, false>(width, height, rptr, wptr); break;
}
r = PoolVector<uint8_t>::Read();
w = PoolVector<uint8_t>::Write();
bool gen_mipmaps = mipmaps;
//mipmaps=false;
_copy_internals_from(new_img);
if (gen_mipmaps)
generate_mipmaps();
}
Image::Format Image::get_format() const {
return format;
}
static double _bicubic_interp_kernel(double x) {
x = ABS(x);
double bc = 0;
if (x <= 1)
bc = (1.5 * x - 2.5) * x * x + 1;
else if (x < 2)
bc = ((-0.5 * x + 2.5) * x - 4) * x + 2;
return bc;
}
template <int CC>
static void _scale_cubic(const uint8_t *__restrict p_src, uint8_t *__restrict p_dst, uint32_t p_src_width, uint32_t p_src_height, uint32_t p_dst_width, uint32_t p_dst_height) {
// get source image size
int width = p_src_width;
int height = p_src_height;
double xfac = (double)width / p_dst_width;
double yfac = (double)height / p_dst_height;
// coordinates of source points and coefficients
double ox, oy, dx, dy, k1, k2;
int ox1, oy1, ox2, oy2;
// destination pixel values
// width and height decreased by 1
int ymax = height - 1;
int xmax = width - 1;
// temporary pointer
for (uint32_t y = 0; y < p_dst_height; y++) {
// Y coordinates
oy = (double)y * yfac - 0.5f;
oy1 = (int)oy;
dy = oy - (double)oy1;
for (uint32_t x = 0; x < p_dst_width; x++) {
// X coordinates
ox = (double)x * xfac - 0.5f;
ox1 = (int)ox;
dx = ox - (double)ox1;
// initial pixel value
uint8_t *__restrict dst = p_dst + (y * p_dst_width + x) * CC;
double color[CC];
for (int i = 0; i < CC; i++) {
color[i] = 0;
}
for (int n = -1; n < 3; n++) {
// get Y coefficient
k1 = _bicubic_interp_kernel(dy - (double)n);
oy2 = oy1 + n;
if (oy2 < 0)
oy2 = 0;
if (oy2 > ymax)
oy2 = ymax;
for (int m = -1; m < 3; m++) {
// get X coefficient
k2 = k1 * _bicubic_interp_kernel((double)m - dx);
ox2 = ox1 + m;
if (ox2 < 0)
ox2 = 0;
if (ox2 > xmax)
ox2 = xmax;
// get pixel of original image
const uint8_t *__restrict p = p_src + (oy2 * p_src_width + ox2) * CC;
for (int i = 0; i < CC; i++) {
color[i] += p[i] * k2;
}
}
}
for (int i = 0; i < CC; i++) {
dst[i] = CLAMP(Math::fast_ftoi(color[i]), 0, 255);
}
}
}
}
template <int CC>
static void _scale_bilinear(const uint8_t *__restrict p_src, uint8_t *__restrict p_dst, uint32_t p_src_width, uint32_t p_src_height, uint32_t p_dst_width, uint32_t p_dst_height) {
enum {
FRAC_BITS = 8,
FRAC_LEN = (1 << FRAC_BITS),
FRAC_MASK = FRAC_LEN - 1
};
for (uint32_t i = 0; i < p_dst_height; i++) {
uint32_t src_yofs_up_fp = (i * p_src_height * FRAC_LEN / p_dst_height);
uint32_t src_yofs_frac = src_yofs_up_fp & FRAC_MASK;
uint32_t src_yofs_up = src_yofs_up_fp >> FRAC_BITS;
uint32_t src_yofs_down = (i + 1) * p_src_height / p_dst_height;
if (src_yofs_down >= p_src_height)
src_yofs_down = p_src_height - 1;
//src_yofs_up*=CC;
//src_yofs_down*=CC;
uint32_t y_ofs_up = src_yofs_up * p_src_width * CC;
uint32_t y_ofs_down = src_yofs_down * p_src_width * CC;
for (uint32_t j = 0; j < p_dst_width; j++) {
uint32_t src_xofs_left_fp = (j * p_src_width * FRAC_LEN / p_dst_width);
uint32_t src_xofs_frac = src_xofs_left_fp & FRAC_MASK;
uint32_t src_xofs_left = src_xofs_left_fp >> FRAC_BITS;
uint32_t src_xofs_right = (j + 1) * p_src_width / p_dst_width;
if (src_xofs_right >= p_src_width)
src_xofs_right = p_src_width - 1;
src_xofs_left *= CC;
src_xofs_right *= CC;
for (uint32_t l = 0; l < CC; l++) {
uint32_t p00 = p_src[y_ofs_up + src_xofs_left + l] << FRAC_BITS;
uint32_t p10 = p_src[y_ofs_up + src_xofs_right + l] << FRAC_BITS;
uint32_t p01 = p_src[y_ofs_down + src_xofs_left + l] << FRAC_BITS;
uint32_t p11 = p_src[y_ofs_down + src_xofs_right + l] << FRAC_BITS;
uint32_t interp_up = p00 + (((p10 - p00) * src_xofs_frac) >> FRAC_BITS);
uint32_t interp_down = p01 + (((p11 - p01) * src_xofs_frac) >> FRAC_BITS);
uint32_t interp = interp_up + (((interp_down - interp_up) * src_yofs_frac) >> FRAC_BITS);
interp >>= FRAC_BITS;
p_dst[i * p_dst_width * CC + j * CC + l] = interp;
}
}
}
}
template <int CC>
static void _scale_nearest(const uint8_t *__restrict p_src, uint8_t *__restrict p_dst, uint32_t p_src_width, uint32_t p_src_height, uint32_t p_dst_width, uint32_t p_dst_height) {
for (uint32_t i = 0; i < p_dst_height; i++) {
uint32_t src_yofs = i * p_src_height / p_dst_height;
uint32_t y_ofs = src_yofs * p_src_width * CC;
for (uint32_t j = 0; j < p_dst_width; j++) {
uint32_t src_xofs = j * p_src_width / p_dst_width;
src_xofs *= CC;
for (uint32_t l = 0; l < CC; l++) {
uint32_t p = p_src[y_ofs + src_xofs + l];
p_dst[i * p_dst_width * CC + j * CC + l] = p;
}
}
}
}
static void _overlay(const uint8_t *__restrict p_src, uint8_t *__restrict p_dst, float p_alpha, uint32_t p_width, uint32_t p_height, uint32_t p_pixel_size) {
uint16_t alpha = CLAMP((uint16_t)(p_alpha * 256.0f), 0, 256);
for (uint32_t i = 0; i < p_width * p_height * p_pixel_size; i++) {
p_dst[i] = (p_dst[i] * (256 - alpha) + p_src[i] * alpha) >> 8;
}
}
void Image::resize_to_po2(bool p_square) {
if (!_can_modify(format)) {
ERR_EXPLAIN("Cannot resize in indexed, compressed or custom image formats.");
ERR_FAIL();
}
int w = next_power_of_2(width);
int h = next_power_of_2(height);
if (w == width && h == height) {
if (!p_square || w == h)
return; //nothing to do
}
resize(w, h);
}
void Image::resize(int p_width, int p_height, Interpolation p_interpolation) {
if (data.size() == 0) {
ERR_EXPLAIN("Cannot resize image before creating it, use create() or create_from_data() first.");
ERR_FAIL();
}
if (!_can_modify(format)) {
ERR_EXPLAIN("Cannot resize in indexed, compressed or custom image formats.");
ERR_FAIL();
}
bool mipmap_aware = p_interpolation == INTERPOLATE_TRILINEAR /* || p_interpolation == INTERPOLATE_TRICUBIC */;
ERR_FAIL_COND(p_width <= 0);
ERR_FAIL_COND(p_height <= 0);
ERR_FAIL_COND(p_width > MAX_WIDTH);
ERR_FAIL_COND(p_height > MAX_HEIGHT);
if (p_width == width && p_height == height)
return;
Image dst(p_width, p_height, 0, format);
// Setup mipmap-aware scaling
Image dst2;
int mip1;
int mip2;
float mip1_weight;
if (mipmap_aware) {
float avg_scale = ((float)p_width / width + (float)p_height / height) * 0.5f;
if (avg_scale >= 1.0f) {
mipmap_aware = false;
} else {
float level = Math::log(1.0f / avg_scale) / Math::log(2.0f);
mip1 = CLAMP((int)Math::floor(level), 0, get_mipmap_count());
mip2 = CLAMP((int)Math::ceil(level), 0, get_mipmap_count());
mip1_weight = 1.0f - (level - mip1);
}
}
bool interpolate_mipmaps = mipmap_aware && mip1 != mip2;
if (interpolate_mipmaps) {
dst2.create(p_width, p_height, 0, format);
}
bool had_mipmaps = mipmaps;
if (interpolate_mipmaps && !had_mipmaps) {
generate_mipmaps();
}
// --
PoolVector<uint8_t>::Read r = data.read();
const unsigned char *r_ptr = r.ptr();
PoolVector<uint8_t>::Write w = dst.data.write();
unsigned char *w_ptr = w.ptr();
switch (p_interpolation) {
case INTERPOLATE_NEAREST: {
switch (get_format_pixel_size(format)) {
case 1: _scale_nearest<1>(r_ptr, w_ptr, width, height, p_width, p_height); break;
case 2: _scale_nearest<2>(r_ptr, w_ptr, width, height, p_width, p_height); break;
case 3: _scale_nearest<3>(r_ptr, w_ptr, width, height, p_width, p_height); break;
case 4: _scale_nearest<4>(r_ptr, w_ptr, width, height, p_width, p_height); break;
}
} break;
case INTERPOLATE_BILINEAR:
case INTERPOLATE_TRILINEAR: {
for (int i = 0; i < 2; ++i) {
int src_width;
int src_height;
const unsigned char *src_ptr;
if (!mipmap_aware) {
if (i == 0) {
// Standard behavior
src_width = width;
src_height = height;
src_ptr = r_ptr;
} else {
// No need for a second iteration
break;
}
} else {
if (i == 0) {
// Read from the first mipmap that will be interpolated
// (if both levels are the same, we will not interpolate, but at least we'll sample from the right level)
int offs;
_get_mipmap_offset_and_size(mip1, offs, src_width, src_height);
src_ptr = r_ptr + offs;
} else if (!interpolate_mipmaps) {
// No need generate a second image
break;
} else {
// Switch to read from the second mipmap that will be interpolated
int offs;
_get_mipmap_offset_and_size(mip2, offs, src_width, src_height);
src_ptr = r_ptr + offs;
// Switch to write to the second destination image
w = dst2.data.write();
w_ptr = w.ptr();
}
}
switch (get_format_pixel_size(format)) {
case 1: _scale_bilinear<1>(src_ptr, w_ptr, src_width, src_height, p_width, p_height); break;
case 2: _scale_bilinear<2>(src_ptr, w_ptr, src_width, src_height, p_width, p_height); break;
case 3: _scale_bilinear<3>(src_ptr, w_ptr, src_width, src_height, p_width, p_height); break;
case 4: _scale_bilinear<4>(src_ptr, w_ptr, src_width, src_height, p_width, p_height); break;
}
}
if (interpolate_mipmaps) {
// Switch to read again from the first scaled mipmap to overlay it over the second
r = dst.data.read();
_overlay(r.ptr(), w.ptr(), mip1_weight, p_width, p_height, get_format_pixel_size(format));
}
} break;
case INTERPOLATE_CUBIC: {
switch (get_format_pixel_size(format)) {
case 1: _scale_cubic<1>(r_ptr, w_ptr, width, height, p_width, p_height); break;
case 2: _scale_cubic<2>(r_ptr, w_ptr, width, height, p_width, p_height); break;
case 3: _scale_cubic<3>(r_ptr, w_ptr, width, height, p_width, p_height); break;
case 4: _scale_cubic<4>(r_ptr, w_ptr, width, height, p_width, p_height); break;
}
} break;
}
r = PoolVector<uint8_t>::Read();
w = PoolVector<uint8_t>::Write();
if (interpolate_mipmaps) {
dst._copy_internals_from(dst2);
}
if (had_mipmaps)
dst.generate_mipmaps();
_copy_internals_from(dst);
}
void Image::crop_from_point(int p_x, int p_y, int p_width, int p_height) {
if (!_can_modify(format)) {
ERR_EXPLAIN("Cannot crop in indexed, compressed or custom image formats.");
ERR_FAIL();
}
ERR_FAIL_COND(p_x < 0);
ERR_FAIL_COND(p_y < 0);
ERR_FAIL_COND(p_width <= 0);
ERR_FAIL_COND(p_height <= 0);
ERR_FAIL_COND(p_x + p_width > MAX_WIDTH);
ERR_FAIL_COND(p_y + p_height > MAX_HEIGHT);
/* to save memory, cropping should be done in-place, however, since this function
will most likely either not be used much, or in critical areas, for now it won't, because
it's a waste of time. */
if (p_width == width && p_height == height && p_x == 0 && p_y == 0)
return;
uint8_t pdata[16]; //largest is 16
uint32_t pixel_size = get_format_pixel_size(format);
Image dst(p_width, p_height, 0, format);
{
PoolVector<uint8_t>::Read r = data.read();
PoolVector<uint8_t>::Write w = dst.data.write();
int m_h = p_y + p_height;
int m_w = p_x + p_width;
for (int y = p_y; y < m_h; y++) {
for (int x = p_x; x < m_w; x++) {
if ((x >= width || y >= height)) {
for (uint32_t i = 0; i < pixel_size; i++)
pdata[i] = 0;
} else {
_get_pixelb(x, y, pixel_size, r.ptr(), pdata);
}
dst._put_pixelb(x - p_x, y - p_y, pixel_size, w.ptr(), pdata);
}
}
}
if (mipmaps > 0)
dst.generate_mipmaps();
_copy_internals_from(dst);
}
void Image::crop(int p_width, int p_height) {
crop_from_point(0, 0, p_width, p_height);
}
void Image::flip_y() {
if (!_can_modify(format)) {
ERR_EXPLAIN("Cannot flip_y in indexed, compressed or custom image formats.");
ERR_FAIL();
}
bool gm = mipmaps;
if (gm)
clear_mipmaps();
{
PoolVector<uint8_t>::Write w = data.write();
uint8_t up[16];
uint8_t down[16];
uint32_t pixel_size = get_format_pixel_size(format);
for (int y = 0; y < height / 2; y++) {
for (int x = 0; x < width; x++) {
_get_pixelb(x, y, pixel_size, w.ptr(), up);
_get_pixelb(x, height - y - 1, pixel_size, w.ptr(), down);
_put_pixelb(x, height - y - 1, pixel_size, w.ptr(), up);
_put_pixelb(x, y, pixel_size, w.ptr(), down);
}
}
}
if (gm)
generate_mipmaps();
}
void Image::flip_x() {
if (!_can_modify(format)) {
ERR_EXPLAIN("Cannot flip_x in indexed, compressed or custom image formats.");
ERR_FAIL();
}
bool gm = mipmaps;
if (gm)
clear_mipmaps();
{
PoolVector<uint8_t>::Write w = data.write();
uint8_t up[16];
uint8_t down[16];
uint32_t pixel_size = get_format_pixel_size(format);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width / 2; x++) {
_get_pixelb(x, y, pixel_size, w.ptr(), up);
_get_pixelb(width - x - 1, y, pixel_size, w.ptr(), down);
_put_pixelb(width - x - 1, y, pixel_size, w.ptr(), up);
_put_pixelb(x, y, pixel_size, w.ptr(), down);
}
}
}
if (gm)
generate_mipmaps();
}
int Image::_get_dst_image_size(int p_width, int p_height, Format p_format, int &r_mipmaps, int p_mipmaps) {
int size = 0;
int w = p_width;
int h = p_height;
int mm = 0;
int pixsize = get_format_pixel_size(p_format);
int pixshift = get_format_pixel_rshift(p_format);
int block = get_format_block_size(p_format);
//technically, you can still compress up to 1 px no matter the format, so commenting this
//int minw, minh;
//get_format_min_pixel_size(p_format, minw, minh);
int minw = 1, minh = 1;
while (true) {
int bw = w % block != 0 ? w + (block - w % block) : w;
int bh = h % block != 0 ? h + (block - h % block) : h;
int s = bw * bh;
s *= pixsize;
s >>= pixshift;
size += s;
if (p_mipmaps >= 0 && mm == p_mipmaps)
break;
if (p_mipmaps >= 0) {
w = MAX(minw, w >> 1);
h = MAX(minh, h >> 1);
} else {
if (w == minw && h == minh)
break;
w = MAX(minw, w >> 1);
h = MAX(minh, h >> 1);
}
mm++;
};
r_mipmaps = mm;
return size;
}
bool Image::_can_modify(Format p_format) const {
return p_format <= FORMAT_RGBE9995;
}
template <int CC, bool renormalize>
static void _generate_po2_mipmap(const uint8_t *p_src, uint8_t *p_dst, uint32_t p_width, uint32_t p_height) {
//fast power of 2 mipmap generation
uint32_t dst_w = p_width >> 1;
uint32_t dst_h = p_height >> 1;
for (uint32_t i = 0; i < dst_h; i++) {
const uint8_t *rup_ptr = &p_src[i * 2 * p_width * CC];
const uint8_t *rdown_ptr = rup_ptr + p_width * CC;
uint8_t *dst_ptr = &p_dst[i * dst_w * CC];
uint32_t count = dst_w;
while (count--) {
for (int j = 0; j < CC; j++) {
uint16_t val = 0;
val += rup_ptr[j];
val += rup_ptr[j + CC];
val += rdown_ptr[j];
val += rdown_ptr[j + CC];
dst_ptr[j] = val >> 2;
}
if (renormalize) {
Vector3 n(dst_ptr[0] / 255.0, dst_ptr[1] / 255.0, dst_ptr[2] / 255.0);
n *= 2.0;
n -= Vector3(1, 1, 1);
n.normalize();
n += Vector3(1, 1, 1);
n *= 0.5;
n *= 255;
dst_ptr[0] = CLAMP(int(n.x), 0, 255);
dst_ptr[1] = CLAMP(int(n.y), 0, 255);
dst_ptr[2] = CLAMP(int(n.z), 0, 255);
}
dst_ptr += CC;
rup_ptr += CC * 2;
rdown_ptr += CC * 2;
}
}
}
void Image::expand_x2_hq2x() {
ERR_FAIL_COND(!_can_modify(format));
Format current = format;
bool mm = has_mipmaps();
if (mm) {
clear_mipmaps();
}
if (current != FORMAT_RGBA8)
convert(FORMAT_RGBA8);
PoolVector<uint8_t> dest;
dest.resize(width * 2 * height * 2 * 4);
{
PoolVector<uint8_t>::Read r = data.read();
PoolVector<uint8_t>::Write w = dest.write();
hq2x_resize((const uint32_t *)r.ptr(), width, height, (uint32_t *)w.ptr());
}
width *= 2;
height *= 2;
data = dest;
if (current != FORMAT_RGBA8)
convert(current);
if (mipmaps) {
generate_mipmaps();
}
}
void Image::shrink_x2() {
ERR_FAIL_COND(data.size() == 0);
if (mipmaps) {
//just use the lower mipmap as base and copy all
PoolVector<uint8_t> new_img;
int ofs = get_mipmap_offset(1);
int new_size = data.size() - ofs;
new_img.resize(new_size);
{
PoolVector<uint8_t>::Write w = new_img.write();
PoolVector<uint8_t>::Read r = data.read();
copymem(w.ptr(), &r[ofs], new_size);
}
width = MAX(width / 2, 1);
height = MAX(height / 2, 1);
data = new_img;
} else {
PoolVector<uint8_t> new_img;
ERR_FAIL_COND(!_can_modify(format));
int ps = get_format_pixel_size(format);
new_img.resize((width / 2) * (height / 2) * ps);
{
PoolVector<uint8_t>::Write w = new_img.write();
PoolVector<uint8_t>::Read r = data.read();
switch (format) {
case FORMAT_L8:
case FORMAT_R8: _generate_po2_mipmap<1, false>(r.ptr(), w.ptr(), width, height); break;
case FORMAT_LA8: _generate_po2_mipmap<2, false>(r.ptr(), w.ptr(), width, height); break;
case FORMAT_RG8: _generate_po2_mipmap<2, false>(r.ptr(), w.ptr(), width, height); break;
case FORMAT_RGB8: _generate_po2_mipmap<3, false>(r.ptr(), w.ptr(), width, height); break;
case FORMAT_RGBA8: _generate_po2_mipmap<4, false>(r.ptr(), w.ptr(), width, height); break;
default: {}
}
}
width /= 2;
height /= 2;
data = new_img;
}
}
void Image::normalize() {
bool used_mipmaps = has_mipmaps();
if (used_mipmaps) {
clear_mipmaps();
}
lock();
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
Color c = get_pixel(x, y);
Vector3 v(c.r * 2.0 - 1.0, c.g * 2.0 - 1.0, c.b * 2.0 - 1.0);
v.normalize();
c.r = v.x * 0.5 + 0.5;
c.g = v.y * 0.5 + 0.5;
c.b = v.z * 0.5 + 0.5;
set_pixel(x, y, c);
}
}
unlock();
if (used_mipmaps) {
generate_mipmaps(true);
}
}
Error Image::generate_mipmaps(bool p_renormalize) {
if (!_can_modify(format)) {
ERR_EXPLAIN("Cannot generate mipmaps in indexed, compressed or custom image formats.");
ERR_FAIL_V(ERR_UNAVAILABLE);
}
ERR_FAIL_COND_V(width == 0 || height == 0, ERR_UNCONFIGURED);
int mmcount;
int size = _get_dst_image_size(width, height, format, mmcount);
data.resize(size);
PoolVector<uint8_t>::Write wp = data.write();
int prev_ofs = 0;
int prev_h = height;
int prev_w = width;
for (int i = 1; i < mmcount; i++) {
int ofs, w, h;
_get_mipmap_offset_and_size(i, ofs, w, h);
switch (format) {
case FORMAT_L8:
case FORMAT_R8: _generate_po2_mipmap<1, false>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_LA8:
case FORMAT_RG8: _generate_po2_mipmap<2, false>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h); break;
case FORMAT_RGB8:
if (p_renormalize)
_generate_po2_mipmap<3, true>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h);
else
_generate_po2_mipmap<3, false>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h);
break;
case FORMAT_RGBA8:
if (p_renormalize)
_generate_po2_mipmap<4, true>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h);
else
_generate_po2_mipmap<4, false>(&wp[prev_ofs], &wp[ofs], prev_w, prev_h);
break;
default: {}
}
prev_ofs = ofs;
prev_w = w;
prev_h = h;
}
mipmaps = true;
return OK;
}
void Image::clear_mipmaps() {
if (!mipmaps)
return;
if (empty())
return;
int ofs, w, h;
_get_mipmap_offset_and_size(1, ofs, w, h);
data.resize(ofs);
mipmaps = false;
}
bool Image::empty() const {
return (data.size() == 0);
}
PoolVector<uint8_t> Image::get_data() const {
return data;
}
void Image::create(int p_width, int p_height, bool p_use_mipmaps, Format p_format) {
ERR_FAIL_INDEX(p_width - 1, MAX_WIDTH);
ERR_FAIL_INDEX(p_height - 1, MAX_HEIGHT);
int mm = 0;
int size = _get_dst_image_size(p_width, p_height, p_format, mm, p_use_mipmaps ? -1 : 0);
data.resize(size);
{
PoolVector<uint8_t>::Write w = data.write();
zeromem(w.ptr(), size);
}
width = p_width;
height = p_height;
mipmaps = p_use_mipmaps;
format = p_format;
}
void Image::create(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const PoolVector<uint8_t> &p_data) {
ERR_FAIL_INDEX(p_width - 1, MAX_WIDTH);
ERR_FAIL_INDEX(p_height - 1, MAX_HEIGHT);
int mm;
int size = _get_dst_image_size(p_width, p_height, p_format, mm, p_use_mipmaps ? -1 : 0);
if (size != p_data.size()) {
ERR_EXPLAIN("Expected data size of " + itos(size) + " bytes in Image::create(), got instead " + itos(p_data.size()) + " bytes.");
ERR_FAIL_COND(p_data.size() != size);
}
height = p_height;
width = p_width;
format = p_format;
data = p_data;
mipmaps = p_use_mipmaps;
}
void Image::create(const char **p_xpm) {
int size_width, size_height;
int pixelchars = 0;
mipmaps = false;
bool has_alpha = false;
enum Status {
READING_HEADER,
READING_COLORS,
READING_PIXELS,
DONE
};
Status status = READING_HEADER;
int line = 0;
HashMap<String, Color> colormap;
int colormap_size;
uint32_t pixel_size;
PoolVector<uint8_t>::Write w;
while (status != DONE) {
const char *line_ptr = p_xpm[line];
switch (status) {
case READING_HEADER: {
String line_str = line_ptr;
line_str.replace("\t", " ");
size_width = line_str.get_slicec(' ', 0).to_int();
size_height = line_str.get_slicec(' ', 1).to_int();
colormap_size = line_str.get_slicec(' ', 2).to_int();
pixelchars = line_str.get_slicec(' ', 3).to_int();
ERR_FAIL_COND(colormap_size > 32766);
ERR_FAIL_COND(pixelchars > 5);
ERR_FAIL_COND(size_width > 32767);
ERR_FAIL_COND(size_height > 32767);
status = READING_COLORS;
} break;
case READING_COLORS: {
String colorstring;
for (int i = 0; i < pixelchars; i++) {
colorstring += *line_ptr;
line_ptr++;
}
//skip spaces
while (*line_ptr == ' ' || *line_ptr == '\t' || *line_ptr == 0) {
if (*line_ptr == 0)
break;
line_ptr++;
}
if (*line_ptr == 'c') {
line_ptr++;
while (*line_ptr == ' ' || *line_ptr == '\t' || *line_ptr == 0) {
if (*line_ptr == 0)
break;
line_ptr++;
}
if (*line_ptr == '#') {
line_ptr++;
uint8_t col_r = 0;
uint8_t col_g = 0;
uint8_t col_b = 0;
//uint8_t col_a=255;
for (int i = 0; i < 6; i++) {
char v = line_ptr[i];
if (v >= '0' && v <= '9')
v -= '0';
else if (v >= 'A' && v <= 'F')
v = (v - 'A') + 10;
else if (v >= 'a' && v <= 'f')
v = (v - 'a') + 10;
else
break;
switch (i) {
case 0: col_r = v << 4; break;
case 1: col_r |= v; break;
case 2: col_g = v << 4; break;
case 3: col_g |= v; break;
case 4: col_b = v << 4; break;
case 5: col_b |= v; break;
};
}
// magenta mask
if (col_r == 255 && col_g == 0 && col_b == 255) {
colormap[colorstring] = Color(0, 0, 0, 0);
has_alpha = true;
} else {
colormap[colorstring] = Color(col_r / 255.0, col_g / 255.0, col_b / 255.0, 1.0);
}
}
}
if (line == colormap_size) {
status = READING_PIXELS;
create(size_width, size_height, 0, has_alpha ? FORMAT_RGBA8 : FORMAT_RGB8);
w = data.write();
pixel_size = has_alpha ? 4 : 3;
}
} break;
case READING_PIXELS: {
int y = line - colormap_size - 1;
for (int x = 0; x < size_width; x++) {
char pixelstr[6] = { 0, 0, 0, 0, 0, 0 };
for (int i = 0; i < pixelchars; i++)
pixelstr[i] = line_ptr[x * pixelchars + i];
Color *colorptr = colormap.getptr(pixelstr);
ERR_FAIL_COND(!colorptr);
uint8_t pixel[4];
for (uint32_t i = 0; i < pixel_size; i++) {
pixel[i] = CLAMP((*colorptr)[i] * 255, 0, 255);
}
_put_pixelb(x, y, pixel_size, w.ptr(), pixel);
}
if (y == (size_height - 1))
status = DONE;
} break;
default: {}
}
line++;
}
}
#define DETECT_ALPHA_MAX_THRESHOLD 254
#define DETECT_ALPHA_MIN_THRESHOLD 2
#define DETECT_ALPHA(m_value) \
{ \
uint8_t value = m_value; \
if (value < DETECT_ALPHA_MIN_THRESHOLD) \
bit = true; \
else if (value < DETECT_ALPHA_MAX_THRESHOLD) { \
\
detected = true; \
break; \
} \
}
#define DETECT_NON_ALPHA(m_value) \
{ \
uint8_t value = m_value; \
if (value > 0) { \
\
detected = true; \
break; \
} \
}
bool Image::is_invisible() const {
if (format == FORMAT_L8 ||
format == FORMAT_RGB8 || format == FORMAT_RG8)
return false;
int len = data.size();
if (len == 0)
return true;
int w, h;
_get_mipmap_offset_and_size(1, len, w, h);
PoolVector<uint8_t>::Read r = data.read();
const unsigned char *data_ptr = r.ptr();
bool detected = false;
switch (format) {
case FORMAT_LA8: {
for (int i = 0; i < (len >> 1); i++) {
DETECT_NON_ALPHA(data_ptr[(i << 1) + 1]);
}
} break;
case FORMAT_RGBA8: {
for (int i = 0; i < (len >> 2); i++) {
DETECT_NON_ALPHA(data_ptr[(i << 2) + 3])
}
} break;
case FORMAT_PVRTC2A:
case FORMAT_PVRTC4A:
case FORMAT_DXT3:
case FORMAT_DXT5: {
detected = true;
} break;
default: {}
}
return !detected;
}
Image::AlphaMode Image::detect_alpha() const {
int len = data.size();
if (len == 0)
return ALPHA_NONE;
int w, h;
_get_mipmap_offset_and_size(1, len, w, h);
PoolVector<uint8_t>::Read r = data.read();
const unsigned char *data_ptr = r.ptr();
bool bit = false;
bool detected = false;
switch (format) {
case FORMAT_LA8: {
for (int i = 0; i < (len >> 1); i++) {
DETECT_ALPHA(data_ptr[(i << 1) + 1]);
}
} break;
case FORMAT_RGBA8: {
for (int i = 0; i < (len >> 2); i++) {
DETECT_ALPHA(data_ptr[(i << 2) + 3])
}
} break;
case FORMAT_PVRTC2A:
case FORMAT_PVRTC4A:
case FORMAT_DXT3:
case FORMAT_DXT5: {
detected = true;
} break;
default: {}
}
if (detected)
return ALPHA_BLEND;
else if (bit)
return ALPHA_BIT;
else
return ALPHA_NONE;
}
Error Image::load(const String &p_path) {
#ifdef DEBUG_ENABLED
if (p_path.begins_with("res://") && ResourceLoader::exists(p_path)) {
WARN_PRINTS("Loaded resource as image file, this will not work on export: '" + p_path + "'. Instead, import the image file as an Image resource and load it normally as a resource.");
}
#endif
return ImageLoader::load_image(p_path, this);
}
Error Image::save_png(const String &p_path) const {
if (save_png_func == NULL)
return ERR_UNAVAILABLE;
return save_png_func(p_path, Ref<Image>((Image *)this));
}
int Image::get_image_data_size(int p_width, int p_height, Format p_format, bool p_mipmaps) {
int mm;
return _get_dst_image_size(p_width, p_height, p_format, mm, p_mipmaps ? -1 : 0);
}
int Image::get_image_required_mipmaps(int p_width, int p_height, Format p_format) {
int mm;
_get_dst_image_size(p_width, p_height, p_format, mm, -1);
return mm;
}
bool Image::is_compressed() const {
return format > FORMAT_RGBE9995;
}
Error Image::decompress() {
if (format >= FORMAT_DXT1 && format <= FORMAT_BPTC_RGBFU && _image_decompress_bc)
_image_decompress_bc(this);
else if (format >= FORMAT_PVRTC2 && format <= FORMAT_PVRTC4A && _image_decompress_pvrtc)
_image_decompress_pvrtc(this);
else if (format == FORMAT_ETC && _image_decompress_etc1)
_image_decompress_etc1(this);
else if (format >= FORMAT_ETC2_R11 && format <= FORMAT_ETC2_RGB8A1 && _image_decompress_etc1)
_image_decompress_etc2(this);
else
return ERR_UNAVAILABLE;
return OK;
}
Error Image::compress(CompressMode p_mode, CompressSource p_source, float p_lossy_quality) {
switch (p_mode) {
case COMPRESS_S3TC: {
ERR_FAIL_COND_V(!_image_compress_bc_func, ERR_UNAVAILABLE);
_image_compress_bc_func(this, p_source);
} break;
case COMPRESS_PVRTC2: {
ERR_FAIL_COND_V(!_image_compress_pvrtc2_func, ERR_UNAVAILABLE);
_image_compress_pvrtc2_func(this);
} break;
case COMPRESS_PVRTC4: {
ERR_FAIL_COND_V(!_image_compress_pvrtc4_func, ERR_UNAVAILABLE);
_image_compress_pvrtc4_func(this);
} break;
case COMPRESS_ETC: {
ERR_FAIL_COND_V(!_image_compress_etc1_func, ERR_UNAVAILABLE);
_image_compress_etc1_func(this, p_lossy_quality);
} break;
case COMPRESS_ETC2: {
ERR_FAIL_COND_V(!_image_compress_etc2_func, ERR_UNAVAILABLE);
_image_compress_etc2_func(this, p_lossy_quality, p_source);
} break;
}
return OK;
}
Image::Image(const char **p_xpm) {
width = 0;
height = 0;
mipmaps = false;
format = FORMAT_L8;
create(p_xpm);
}
Image::Image(int p_width, int p_height, bool p_use_mipmaps, Format p_format) {
width = 0;
height = 0;
mipmaps = p_use_mipmaps;
format = FORMAT_L8;
create(p_width, p_height, p_use_mipmaps, p_format);
}
Image::Image(int p_width, int p_height, bool p_mipmaps, Format p_format, const PoolVector<uint8_t> &p_data) {
width = 0;
height = 0;
mipmaps = p_mipmaps;
format = FORMAT_L8;
create(p_width, p_height, p_mipmaps, p_format, p_data);
}
Rect2 Image::get_used_rect() const {
if (format != FORMAT_LA8 && format != FORMAT_RGBA8)
return Rect2(Point2(), Size2(width, height));
int len = data.size();
if (len == 0)
return Rect2();
//int data_size = len;
PoolVector<uint8_t>::Read r = data.read();
const unsigned char *rptr = r.ptr();
int ps = format == FORMAT_LA8 ? 2 : 4;
int minx = 0xFFFFFF, miny = 0xFFFFFFF;
int maxx = -1, maxy = -1;
for (int j = 0; j < height; j++) {
for (int i = 0; i < width; i++) {
bool opaque = rptr[(j * width + i) * ps + (ps - 1)] > 2;
if (!opaque)
continue;
if (i > maxx)
maxx = i;
if (j > maxy)
maxy = j;
if (i < minx)
minx = i;
if (j < miny)
miny = j;
}
}
if (maxx == -1)
return Rect2();
else
return Rect2(minx, miny, maxx - minx + 1, maxy - miny + 1);
}
Ref<Image> Image::get_rect(const Rect2 &p_area) const {
Ref<Image> img = memnew(Image(p_area.size.x, p_area.size.y, mipmaps, format));
img->blit_rect(Ref<Image>((Image *)this), p_area, Point2(0, 0));
return img;
}
void Image::blit_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest) {
ERR_FAIL_COND(p_src.is_null());
int dsize = data.size();
int srcdsize = p_src->data.size();
ERR_FAIL_COND(dsize == 0);
ERR_FAIL_COND(srcdsize == 0);
ERR_FAIL_COND(format != p_src->format);
Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
if (p_dest.x < 0)
clipped_src_rect.position.x = ABS(p_dest.x);
if (p_dest.y < 0)
clipped_src_rect.position.y = ABS(p_dest.y);
if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
return;
Rect2i dest_rect = Rect2i(0, 0, width, height).clip(Rect2i(p_dest, clipped_src_rect.size));
PoolVector<uint8_t>::Write wp = data.write();
uint8_t *dst_data_ptr = wp.ptr();
PoolVector<uint8_t>::Read rp = p_src->data.read();
const uint8_t *src_data_ptr = rp.ptr();
int pixel_size = get_format_pixel_size(format);
for (int i = 0; i < dest_rect.size.y; i++) {
for (int j = 0; j < dest_rect.size.x; j++) {
int src_x = clipped_src_rect.position.x + j;
int src_y = clipped_src_rect.position.y + i;
int dst_x = dest_rect.position.x + j;
int dst_y = dest_rect.position.y + i;
const uint8_t *src = &src_data_ptr[(src_y * p_src->width + src_x) * pixel_size];
uint8_t *dst = &dst_data_ptr[(dst_y * width + dst_x) * pixel_size];
for (int k = 0; k < pixel_size; k++) {
dst[k] = src[k];
}
}
}
}
void Image::blit_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest) {
ERR_FAIL_COND(p_src.is_null());
ERR_FAIL_COND(p_mask.is_null());
int dsize = data.size();
int srcdsize = p_src->data.size();
int maskdsize = p_mask->data.size();
ERR_FAIL_COND(dsize == 0);
ERR_FAIL_COND(srcdsize == 0);
ERR_FAIL_COND(maskdsize == 0);
ERR_FAIL_COND(p_src->width != p_mask->width);
ERR_FAIL_COND(p_src->height != p_mask->height);
ERR_FAIL_COND(format != p_src->format);
Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
if (p_dest.x < 0)
clipped_src_rect.position.x = ABS(p_dest.x);
if (p_dest.y < 0)
clipped_src_rect.position.y = ABS(p_dest.y);
if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
return;
Rect2i dest_rect = Rect2i(0, 0, width, height).clip(Rect2i(p_dest, clipped_src_rect.size));
PoolVector<uint8_t>::Write wp = data.write();
uint8_t *dst_data_ptr = wp.ptr();
PoolVector<uint8_t>::Read rp = p_src->data.read();
const uint8_t *src_data_ptr = rp.ptr();
int pixel_size = get_format_pixel_size(format);
Ref<Image> msk = p_mask;
msk->lock();
for (int i = 0; i < dest_rect.size.y; i++) {
for (int j = 0; j < dest_rect.size.x; j++) {
int src_x = clipped_src_rect.position.x + j;
int src_y = clipped_src_rect.position.y + i;
if (msk->get_pixel(src_x, src_y).a != 0) {
int dst_x = dest_rect.position.x + j;
int dst_y = dest_rect.position.y + i;
const uint8_t *src = &src_data_ptr[(src_y * p_src->width + src_x) * pixel_size];
uint8_t *dst = &dst_data_ptr[(dst_y * width + dst_x) * pixel_size];
for (int k = 0; k < pixel_size; k++) {
dst[k] = src[k];
}
}
}
}
msk->unlock();
}
void Image::blend_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest) {
ERR_FAIL_COND(p_src.is_null());
int dsize = data.size();
int srcdsize = p_src->data.size();
ERR_FAIL_COND(dsize == 0);
ERR_FAIL_COND(srcdsize == 0);
ERR_FAIL_COND(format != p_src->format);
Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
if (p_dest.x < 0)
clipped_src_rect.position.x = ABS(p_dest.x);
if (p_dest.y < 0)
clipped_src_rect.position.y = ABS(p_dest.y);
if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
return;
Rect2i dest_rect = Rect2i(0, 0, width, height).clip(Rect2i(p_dest, clipped_src_rect.size));
lock();
Ref<Image> img = p_src;
img->lock();
for (int i = 0; i < dest_rect.size.y; i++) {
for (int j = 0; j < dest_rect.size.x; j++) {
int src_x = clipped_src_rect.position.x + j;
int src_y = clipped_src_rect.position.y + i;
int dst_x = dest_rect.position.x + j;
int dst_y = dest_rect.position.y + i;
Color sc = img->get_pixel(src_x, src_y);
Color dc = get_pixel(dst_x, dst_y);
dc.r = (double)(sc.a * sc.r + dc.a * (1.0 - sc.a) * dc.r);
dc.g = (double)(sc.a * sc.g + dc.a * (1.0 - sc.a) * dc.g);
dc.b = (double)(sc.a * sc.b + dc.a * (1.0 - sc.a) * dc.b);
dc.a = (double)(sc.a + dc.a * (1.0 - sc.a));
set_pixel(dst_x, dst_y, dc);
}
}
img->unlock();
unlock();
}
void Image::blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest) {
ERR_FAIL_COND(p_src.is_null());
ERR_FAIL_COND(p_mask.is_null());
int dsize = data.size();
int srcdsize = p_src->data.size();
int maskdsize = p_mask->data.size();
ERR_FAIL_COND(dsize == 0);
ERR_FAIL_COND(srcdsize == 0);
ERR_FAIL_COND(maskdsize == 0);
ERR_FAIL_COND(p_src->width != p_mask->width);
ERR_FAIL_COND(p_src->height != p_mask->height);
ERR_FAIL_COND(format != p_src->format);
Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
if (p_dest.x < 0)
clipped_src_rect.position.x = ABS(p_dest.x);
if (p_dest.y < 0)
clipped_src_rect.position.y = ABS(p_dest.y);
if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
return;
Rect2i dest_rect = Rect2i(0, 0, width, height).clip(Rect2i(p_dest, clipped_src_rect.size));
lock();
Ref<Image> img = p_src;
Ref<Image> msk = p_mask;
img->lock();
msk->lock();
for (int i = 0; i < dest_rect.size.y; i++) {
for (int j = 0; j < dest_rect.size.x; j++) {
int src_x = clipped_src_rect.position.x + j;
int src_y = clipped_src_rect.position.y + i;
// If the mask's pixel is transparent then we skip it
//Color c = msk->get_pixel(src_x, src_y);
//if (c.a == 0) continue;
if (msk->get_pixel(src_x, src_y).a != 0) {
int dst_x = dest_rect.position.x + j;
int dst_y = dest_rect.position.y + i;
Color sc = img->get_pixel(src_x, src_y);
Color dc = get_pixel(dst_x, dst_y);
dc.r = (double)(sc.a * sc.r + dc.a * (1.0 - sc.a) * dc.r);
dc.g = (double)(sc.a * sc.g + dc.a * (1.0 - sc.a) * dc.g);
dc.b = (double)(sc.a * sc.b + dc.a * (1.0 - sc.a) * dc.b);
dc.a = (double)(sc.a + dc.a * (1.0 - sc.a));
set_pixel(dst_x, dst_y, dc);
}
}
}
msk->unlock();
img->unlock();
unlock();
}
void Image::fill(const Color &c) {
lock();
PoolVector<uint8_t>::Write wp = data.write();
uint8_t *dst_data_ptr = wp.ptr();
int pixel_size = get_format_pixel_size(format);
// put first pixel with the format-aware API
set_pixel(0, 0, c);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
uint8_t *dst = &dst_data_ptr[(y * width + x) * pixel_size];
for (int k = 0; k < pixel_size; k++) {
dst[k] = dst_data_ptr[k];
}
}
}
unlock();
}
ImageMemLoadFunc Image::_png_mem_loader_func = NULL;
ImageMemLoadFunc Image::_jpg_mem_loader_func = NULL;
ImageMemLoadFunc Image::_webp_mem_loader_func = NULL;
void (*Image::_image_compress_bc_func)(Image *, Image::CompressSource) = NULL;
void (*Image::_image_compress_pvrtc2_func)(Image *) = NULL;
void (*Image::_image_compress_pvrtc4_func)(Image *) = NULL;
void (*Image::_image_compress_etc1_func)(Image *, float) = NULL;
void (*Image::_image_compress_etc2_func)(Image *, float, Image::CompressSource) = NULL;
void (*Image::_image_decompress_pvrtc)(Image *) = NULL;
void (*Image::_image_decompress_bc)(Image *) = NULL;
void (*Image::_image_decompress_etc1)(Image *) = NULL;
void (*Image::_image_decompress_etc2)(Image *) = NULL;
PoolVector<uint8_t> (*Image::lossy_packer)(const Ref<Image> &, float) = NULL;
Ref<Image> (*Image::lossy_unpacker)(const PoolVector<uint8_t> &) = NULL;
PoolVector<uint8_t> (*Image::lossless_packer)(const Ref<Image> &) = NULL;
Ref<Image> (*Image::lossless_unpacker)(const PoolVector<uint8_t> &) = NULL;
void Image::_set_data(const Dictionary &p_data) {
ERR_FAIL_COND(!p_data.has("width"));
ERR_FAIL_COND(!p_data.has("height"));
ERR_FAIL_COND(!p_data.has("format"));
ERR_FAIL_COND(!p_data.has("mipmaps"));
ERR_FAIL_COND(!p_data.has("data"));
int dwidth = p_data["width"];
int dheight = p_data["height"];
String dformat = p_data["format"];
bool dmipmaps = p_data["mipmaps"];
PoolVector<uint8_t> ddata = p_data["data"];
Format ddformat = FORMAT_MAX;
for (int i = 0; i < FORMAT_MAX; i++) {
if (dformat == get_format_name(Format(i))) {
ddformat = Format(i);
break;
}
}
ERR_FAIL_COND(ddformat == FORMAT_MAX);
create(dwidth, dheight, dmipmaps, ddformat, ddata);
}
Dictionary Image::_get_data() const {
Dictionary d;
d["width"] = width;
d["height"] = height;
d["format"] = get_format_name(format);
d["mipmaps"] = mipmaps;
d["data"] = data;
return d;
}
void Image::lock() {
ERR_FAIL_COND(data.size() == 0);
write_lock = data.write();
}
void Image::unlock() {
write_lock = PoolVector<uint8_t>::Write();
}
Color Image::get_pixelv(const Point2 &p_src) const {
return get_pixel(p_src.x, p_src.y);
}
Color Image::get_pixel(int p_x, int p_y) const {
uint8_t *ptr = write_lock.ptr();
#ifdef DEBUG_ENABLED
if (!ptr) {
ERR_EXPLAIN("Image must be locked with 'lock()' before using get_pixel()");
ERR_FAIL_COND_V(!ptr, Color());
}
ERR_FAIL_INDEX_V(p_x, width, Color());
ERR_FAIL_INDEX_V(p_y, height, Color());
#endif
uint32_t ofs = p_y * width + p_x;
switch (format) {
case FORMAT_L8: {
float l = ptr[ofs] / 255.0;
return Color(l, l, l, 1);
} break;
case FORMAT_LA8: {
float l = ptr[ofs * 2 + 0] / 255.0;
float a = ptr[ofs * 2 + 1] / 255.0;
return Color(l, l, l, a);
} break;
case FORMAT_R8: {
float r = ptr[ofs] / 255.0;
return Color(r, 0, 0, 1);
} break;
case FORMAT_RG8: {
float r = ptr[ofs * 2 + 0] / 255.0;
float g = ptr[ofs * 2 + 1] / 255.0;
return Color(r, g, 0, 1);
} break;
case FORMAT_RGB8: {
float r = ptr[ofs * 3 + 0] / 255.0;
float g = ptr[ofs * 3 + 1] / 255.0;
float b = ptr[ofs * 3 + 2] / 255.0;
return Color(r, g, b, 1);
} break;
case FORMAT_RGBA8: {
float r = ptr[ofs * 4 + 0] / 255.0;
float g = ptr[ofs * 4 + 1] / 255.0;
float b = ptr[ofs * 4 + 2] / 255.0;
float a = ptr[ofs * 4 + 3] / 255.0;
return Color(r, g, b, a);
} break;
case FORMAT_RGBA4444: {
uint16_t u = ((uint16_t *)ptr)[ofs];
float r = (u & 0xF) / 15.0;
float g = ((u >> 4) & 0xF) / 15.0;
float b = ((u >> 8) & 0xF) / 15.0;
float a = ((u >> 12) & 0xF) / 15.0;
return Color(r, g, b, a);
} break;
case FORMAT_RGBA5551: {
uint16_t u = ((uint16_t *)ptr)[ofs];
float r = (u & 0x1F) / 15.0;
float g = ((u >> 5) & 0x1F) / 15.0;
float b = ((u >> 10) & 0x1F) / 15.0;
float a = ((u >> 15) & 0x1) / 1.0;
return Color(r, g, b, a);
} break;
case FORMAT_RF: {
float r = ((float *)ptr)[ofs];
return Color(r, 0, 0, 1);
} break;
case FORMAT_RGF: {
float r = ((float *)ptr)[ofs * 2 + 0];
float g = ((float *)ptr)[ofs * 2 + 1];
return Color(r, g, 0, 1);
} break;
case FORMAT_RGBF: {
float r = ((float *)ptr)[ofs * 3 + 0];
float g = ((float *)ptr)[ofs * 3 + 1];
float b = ((float *)ptr)[ofs * 3 + 2];
return Color(r, g, b, 1);
} break;
case FORMAT_RGBAF: {
float r = ((float *)ptr)[ofs * 4 + 0];
float g = ((float *)ptr)[ofs * 4 + 1];
float b = ((float *)ptr)[ofs * 4 + 2];
float a = ((float *)ptr)[ofs * 4 + 3];
return Color(r, g, b, a);
} break;
case FORMAT_RH: {
uint16_t r = ((uint16_t *)ptr)[ofs];
return Color(Math::half_to_float(r), 0, 0, 1);
} break;
case FORMAT_RGH: {
uint16_t r = ((uint16_t *)ptr)[ofs * 2 + 0];
uint16_t g = ((uint16_t *)ptr)[ofs * 2 + 1];
return Color(Math::half_to_float(r), Math::half_to_float(g), 0, 1);
} break;
case FORMAT_RGBH: {
uint16_t r = ((uint16_t *)ptr)[ofs * 3 + 0];
uint16_t g = ((uint16_t *)ptr)[ofs * 3 + 1];
uint16_t b = ((uint16_t *)ptr)[ofs * 3 + 2];
return Color(Math::half_to_float(r), Math::half_to_float(g), Math::half_to_float(b), 1);
} break;
case FORMAT_RGBAH: {
uint16_t r = ((uint16_t *)ptr)[ofs * 4 + 0];
uint16_t g = ((uint16_t *)ptr)[ofs * 4 + 1];
uint16_t b = ((uint16_t *)ptr)[ofs * 4 + 2];
uint16_t a = ((uint16_t *)ptr)[ofs * 4 + 3];
return Color(Math::half_to_float(r), Math::half_to_float(g), Math::half_to_float(b), Math::half_to_float(a));
} break;
case FORMAT_RGBE9995: {
uint32_t rgbe = ((uint32_t *)ptr)[ofs];
float r = rgbe & 0x1ff;
float g = (rgbe >> 9) & 0x1ff;
float b = (rgbe >> 18) & 0x1ff;
float e = (rgbe >> 27);
float m = Math::pow(2, e - 15.0 - 9.0);
;
float rd = r * m;
float gd = g * m;
float bd = b * m;
return Color(rd, gd, bd, 1.0);
} break;
default: {
ERR_EXPLAIN("Can't get_pixel() on compressed image, sorry.");
ERR_FAIL_V(Color());
}
}
return Color();
}
void Image::set_pixelv(const Point2 &p_dst, const Color &p_color) {
return set_pixel(p_dst.x, p_dst.y, p_color);
}
void Image::set_pixel(int p_x, int p_y, const Color &p_color) {
uint8_t *ptr = write_lock.ptr();
#ifdef DEBUG_ENABLED
if (!ptr) {
ERR_EXPLAIN("Image must be locked with 'lock()' before using set_pixel()");
ERR_FAIL_COND(!ptr);
}
ERR_FAIL_INDEX(p_x, width);
ERR_FAIL_INDEX(p_y, height);
#endif
uint32_t ofs = p_y * width + p_x;
switch (format) {
case FORMAT_L8: {
ptr[ofs] = uint8_t(CLAMP(p_color.get_v() * 255.0, 0, 255));
} break;
case FORMAT_LA8: {
ptr[ofs * 2 + 0] = uint8_t(CLAMP(p_color.get_v() * 255.0, 0, 255));
ptr[ofs * 2 + 1] = uint8_t(CLAMP(p_color.a * 255.0, 0, 255));
} break;
case FORMAT_R8: {
ptr[ofs] = uint8_t(CLAMP(p_color.r * 255.0, 0, 255));
} break;
case FORMAT_RG8: {
ptr[ofs * 2 + 0] = uint8_t(CLAMP(p_color.r * 255.0, 0, 255));
ptr[ofs * 2 + 1] = uint8_t(CLAMP(p_color.g * 255.0, 0, 255));
} break;
case FORMAT_RGB8: {
ptr[ofs * 3 + 0] = uint8_t(CLAMP(p_color.r * 255.0, 0, 255));
ptr[ofs * 3 + 1] = uint8_t(CLAMP(p_color.g * 255.0, 0, 255));
ptr[ofs * 3 + 2] = uint8_t(CLAMP(p_color.b * 255.0, 0, 255));
} break;
case FORMAT_RGBA8: {
ptr[ofs * 4 + 0] = uint8_t(CLAMP(p_color.r * 255.0, 0, 255));
ptr[ofs * 4 + 1] = uint8_t(CLAMP(p_color.g * 255.0, 0, 255));
ptr[ofs * 4 + 2] = uint8_t(CLAMP(p_color.b * 255.0, 0, 255));
ptr[ofs * 4 + 3] = uint8_t(CLAMP(p_color.a * 255.0, 0, 255));
} break;
case FORMAT_RGBA4444: {
uint16_t rgba = 0;
rgba = uint16_t(CLAMP(p_color.r * 15.0, 0, 15));
rgba |= uint16_t(CLAMP(p_color.g * 15.0, 0, 15)) << 4;
rgba |= uint16_t(CLAMP(p_color.b * 15.0, 0, 15)) << 8;
rgba |= uint16_t(CLAMP(p_color.a * 15.0, 0, 15)) << 12;
((uint16_t *)ptr)[ofs] = rgba;
} break;
case FORMAT_RGBA5551: {
uint16_t rgba = 0;
rgba = uint16_t(CLAMP(p_color.r * 31.0, 0, 31));
rgba |= uint16_t(CLAMP(p_color.g * 31.0, 0, 31)) << 5;
rgba |= uint16_t(CLAMP(p_color.b * 31.0, 0, 31)) << 10;
rgba |= uint16_t(p_color.a > 0.5 ? 1 : 0) << 15;
((uint16_t *)ptr)[ofs] = rgba;
} break;
case FORMAT_RF: {
((float *)ptr)[ofs] = p_color.r;
} break;
case FORMAT_RGF: {
((float *)ptr)[ofs * 2 + 0] = p_color.r;
((float *)ptr)[ofs * 2 + 1] = p_color.g;
} break;
case FORMAT_RGBF: {
((float *)ptr)[ofs * 3 + 0] = p_color.r;
((float *)ptr)[ofs * 3 + 1] = p_color.g;
((float *)ptr)[ofs * 3 + 2] = p_color.b;
} break;
case FORMAT_RGBAF: {
((float *)ptr)[ofs * 4 + 0] = p_color.r;
((float *)ptr)[ofs * 4 + 1] = p_color.g;
((float *)ptr)[ofs * 4 + 2] = p_color.b;
((float *)ptr)[ofs * 4 + 3] = p_color.a;
} break;
case FORMAT_RH: {
((uint16_t *)ptr)[ofs] = Math::make_half_float(p_color.r);
} break;
case FORMAT_RGH: {
((uint16_t *)ptr)[ofs * 2 + 0] = Math::make_half_float(p_color.r);
((uint16_t *)ptr)[ofs * 2 + 1] = Math::make_half_float(p_color.g);
} break;
case FORMAT_RGBH: {
((uint16_t *)ptr)[ofs * 3 + 0] = Math::make_half_float(p_color.r);
((uint16_t *)ptr)[ofs * 3 + 1] = Math::make_half_float(p_color.g);
((uint16_t *)ptr)[ofs * 3 + 2] = Math::make_half_float(p_color.b);
} break;
case FORMAT_RGBAH: {
((uint16_t *)ptr)[ofs * 4 + 0] = Math::make_half_float(p_color.r);
((uint16_t *)ptr)[ofs * 4 + 1] = Math::make_half_float(p_color.g);
((uint16_t *)ptr)[ofs * 4 + 2] = Math::make_half_float(p_color.b);
((uint16_t *)ptr)[ofs * 4 + 3] = Math::make_half_float(p_color.a);
} break;
case FORMAT_RGBE9995: {
((uint32_t *)ptr)[ofs] = p_color.to_rgbe9995();
} break;
default: {
ERR_EXPLAIN("Can't set_pixel() on compressed image, sorry.");
ERR_FAIL();
}
}
}
Image::DetectChannels Image::get_detected_channels() {
ERR_FAIL_COND_V(data.size() == 0, DETECTED_RGBA);
ERR_FAIL_COND_V(is_compressed(), DETECTED_RGBA);
bool r = false, g = false, b = false, a = false, c = false;
lock();
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
Color col = get_pixel(i, j);
if (col.r > 0.001)
r = true;
if (col.g > 0.001)
g = true;
if (col.b > 0.001)
b = true;
if (col.a < 0.999)
a = true;
if (col.r != col.b || col.r != col.g || col.b != col.g) {
c = true;
}
}
}
unlock();
if (!c && !a)
return DETECTED_L;
if (!c && a)
return DETECTED_LA;
if (r && !g && !b && !a)
return DETECTED_R;
if (r && g && !b && !a)
return DETECTED_RG;
if (r && g && b && !a)
return DETECTED_RGB;
return DETECTED_RGBA;
}
void Image::optimize_channels() {
switch (get_detected_channels()) {
case DETECTED_L: convert(FORMAT_L8); break;
case DETECTED_LA: convert(FORMAT_LA8); break;
case DETECTED_R: convert(FORMAT_R8); break;
case DETECTED_RG: convert(FORMAT_RG8); break;
case DETECTED_RGB: convert(FORMAT_RGB8); break;
case DETECTED_RGBA: convert(FORMAT_RGBA8); break;
}
}
void Image::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_width"), &Image::get_width);
ClassDB::bind_method(D_METHOD("get_height"), &Image::get_height);
ClassDB::bind_method(D_METHOD("get_size"), &Image::get_size);
ClassDB::bind_method(D_METHOD("has_mipmaps"), &Image::has_mipmaps);
ClassDB::bind_method(D_METHOD("get_format"), &Image::get_format);
ClassDB::bind_method(D_METHOD("get_data"), &Image::get_data);
ClassDB::bind_method(D_METHOD("convert", "format"), &Image::convert);
ClassDB::bind_method(D_METHOD("get_mipmap_offset", "mipmap"), &Image::get_mipmap_offset);
ClassDB::bind_method(D_METHOD("resize_to_po2", "square"), &Image::resize_to_po2, DEFVAL(false));
ClassDB::bind_method(D_METHOD("resize", "width", "height", "interpolation"), &Image::resize, DEFVAL(INTERPOLATE_BILINEAR));
ClassDB::bind_method(D_METHOD("shrink_x2"), &Image::shrink_x2);
ClassDB::bind_method(D_METHOD("expand_x2_hq2x"), &Image::expand_x2_hq2x);
ClassDB::bind_method(D_METHOD("crop", "width", "height"), &Image::crop);
ClassDB::bind_method(D_METHOD("flip_x"), &Image::flip_x);
ClassDB::bind_method(D_METHOD("flip_y"), &Image::flip_y);
ClassDB::bind_method(D_METHOD("generate_mipmaps", "renormalize"), &Image::generate_mipmaps, DEFVAL(false));
ClassDB::bind_method(D_METHOD("clear_mipmaps"), &Image::clear_mipmaps);
ClassDB::bind_method(D_METHOD("create", "width", "height", "use_mipmaps", "format"), &Image::_create_empty);
ClassDB::bind_method(D_METHOD("create_from_data", "width", "height", "use_mipmaps", "format", "data"), &Image::_create_from_data);
ClassDB::bind_method(D_METHOD("is_empty"), &Image::empty);
ClassDB::bind_method(D_METHOD("load", "path"), &Image::load);
ClassDB::bind_method(D_METHOD("save_png", "path"), &Image::save_png);
ClassDB::bind_method(D_METHOD("detect_alpha"), &Image::detect_alpha);
ClassDB::bind_method(D_METHOD("is_invisible"), &Image::is_invisible);
ClassDB::bind_method(D_METHOD("compress", "mode", "source", "lossy_quality"), &Image::compress);
ClassDB::bind_method(D_METHOD("decompress"), &Image::decompress);
ClassDB::bind_method(D_METHOD("is_compressed"), &Image::is_compressed);
ClassDB::bind_method(D_METHOD("fix_alpha_edges"), &Image::fix_alpha_edges);
ClassDB::bind_method(D_METHOD("premultiply_alpha"), &Image::premultiply_alpha);
ClassDB::bind_method(D_METHOD("srgb_to_linear"), &Image::srgb_to_linear);
ClassDB::bind_method(D_METHOD("normalmap_to_xy"), &Image::normalmap_to_xy);
ClassDB::bind_method(D_METHOD("rgbe_to_srgb"), &Image::rgbe_to_srgb);
ClassDB::bind_method(D_METHOD("bumpmap_to_normalmap", "bump_scale"), &Image::bumpmap_to_normalmap, DEFVAL(1.0));
ClassDB::bind_method(D_METHOD("blit_rect", "src", "src_rect", "dst"), &Image::blit_rect);
ClassDB::bind_method(D_METHOD("blit_rect_mask", "src", "mask", "src_rect", "dst"), &Image::blit_rect_mask);
ClassDB::bind_method(D_METHOD("blend_rect", "src", "src_rect", "dst"), &Image::blend_rect);
ClassDB::bind_method(D_METHOD("blend_rect_mask", "src", "mask", "src_rect", "dst"), &Image::blend_rect_mask);
ClassDB::bind_method(D_METHOD("fill", "color"), &Image::fill);
ClassDB::bind_method(D_METHOD("get_used_rect"), &Image::get_used_rect);
ClassDB::bind_method(D_METHOD("get_rect", "rect"), &Image::get_rect);
ClassDB::bind_method(D_METHOD("copy_from", "src"), &Image::copy_internals_from);
ClassDB::bind_method(D_METHOD("_set_data", "data"), &Image::_set_data);
ClassDB::bind_method(D_METHOD("_get_data"), &Image::_get_data);
ClassDB::bind_method(D_METHOD("lock"), &Image::lock);
ClassDB::bind_method(D_METHOD("unlock"), &Image::unlock);
ClassDB::bind_method(D_METHOD("get_pixelv", "src"), &Image::get_pixelv);
ClassDB::bind_method(D_METHOD("get_pixel", "x", "y"), &Image::get_pixel);
ClassDB::bind_method(D_METHOD("set_pixelv", "dst", "color"), &Image::set_pixelv);
ClassDB::bind_method(D_METHOD("set_pixel", "x", "y", "color"), &Image::set_pixel);
ClassDB::bind_method(D_METHOD("load_png_from_buffer", "buffer"), &Image::load_png_from_buffer);
ClassDB::bind_method(D_METHOD("load_jpg_from_buffer", "buffer"), &Image::load_jpg_from_buffer);
ClassDB::bind_method(D_METHOD("load_webp_from_buffer", "buffer"), &Image::load_webp_from_buffer);
ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_STORAGE), "_set_data", "_get_data");
BIND_ENUM_CONSTANT(FORMAT_L8); //luminance
BIND_ENUM_CONSTANT(FORMAT_LA8); //luminance-alpha
BIND_ENUM_CONSTANT(FORMAT_R8);
BIND_ENUM_CONSTANT(FORMAT_RG8);
BIND_ENUM_CONSTANT(FORMAT_RGB8);
BIND_ENUM_CONSTANT(FORMAT_RGBA8);
BIND_ENUM_CONSTANT(FORMAT_RGBA4444);
BIND_ENUM_CONSTANT(FORMAT_RGBA5551);
BIND_ENUM_CONSTANT(FORMAT_RF); //float
BIND_ENUM_CONSTANT(FORMAT_RGF);
BIND_ENUM_CONSTANT(FORMAT_RGBF);
BIND_ENUM_CONSTANT(FORMAT_RGBAF);
BIND_ENUM_CONSTANT(FORMAT_RH); //half float
BIND_ENUM_CONSTANT(FORMAT_RGH);
BIND_ENUM_CONSTANT(FORMAT_RGBH);
BIND_ENUM_CONSTANT(FORMAT_RGBAH);
BIND_ENUM_CONSTANT(FORMAT_RGBE9995);
BIND_ENUM_CONSTANT(FORMAT_DXT1); //s3tc bc1
BIND_ENUM_CONSTANT(FORMAT_DXT3); //bc2
BIND_ENUM_CONSTANT(FORMAT_DXT5); //bc3
BIND_ENUM_CONSTANT(FORMAT_RGTC_R);
BIND_ENUM_CONSTANT(FORMAT_RGTC_RG);
BIND_ENUM_CONSTANT(FORMAT_BPTC_RGBA); //btpc bc6h
BIND_ENUM_CONSTANT(FORMAT_BPTC_RGBF); //float /
BIND_ENUM_CONSTANT(FORMAT_BPTC_RGBFU); //unsigned float
BIND_ENUM_CONSTANT(FORMAT_PVRTC2); //pvrtc
BIND_ENUM_CONSTANT(FORMAT_PVRTC2A);
BIND_ENUM_CONSTANT(FORMAT_PVRTC4);
BIND_ENUM_CONSTANT(FORMAT_PVRTC4A);
BIND_ENUM_CONSTANT(FORMAT_ETC); //etc1
BIND_ENUM_CONSTANT(FORMAT_ETC2_R11); //etc2
BIND_ENUM_CONSTANT(FORMAT_ETC2_R11S); //signed ); NOT srgb.
BIND_ENUM_CONSTANT(FORMAT_ETC2_RG11);
BIND_ENUM_CONSTANT(FORMAT_ETC2_RG11S);
BIND_ENUM_CONSTANT(FORMAT_ETC2_RGB8);
BIND_ENUM_CONSTANT(FORMAT_ETC2_RGBA8);
BIND_ENUM_CONSTANT(FORMAT_ETC2_RGB8A1);
BIND_ENUM_CONSTANT(FORMAT_MAX);
BIND_ENUM_CONSTANT(INTERPOLATE_NEAREST);
BIND_ENUM_CONSTANT(INTERPOLATE_BILINEAR);
BIND_ENUM_CONSTANT(INTERPOLATE_CUBIC);
BIND_ENUM_CONSTANT(INTERPOLATE_TRILINEAR);
BIND_ENUM_CONSTANT(ALPHA_NONE);
BIND_ENUM_CONSTANT(ALPHA_BIT);
BIND_ENUM_CONSTANT(ALPHA_BLEND);
BIND_ENUM_CONSTANT(COMPRESS_S3TC);
BIND_ENUM_CONSTANT(COMPRESS_PVRTC2);
BIND_ENUM_CONSTANT(COMPRESS_PVRTC4);
BIND_ENUM_CONSTANT(COMPRESS_ETC);
BIND_ENUM_CONSTANT(COMPRESS_ETC2);
BIND_ENUM_CONSTANT(COMPRESS_SOURCE_GENERIC);
BIND_ENUM_CONSTANT(COMPRESS_SOURCE_SRGB);
BIND_ENUM_CONSTANT(COMPRESS_SOURCE_NORMAL);
}
void Image::set_compress_bc_func(void (*p_compress_func)(Image *, CompressSource)) {
_image_compress_bc_func = p_compress_func;
}
void Image::normalmap_to_xy() {
convert(Image::FORMAT_RGBA8);
{
int len = data.size() / 4;
PoolVector<uint8_t>::Write wp = data.write();
unsigned char *data_ptr = wp.ptr();
for (int i = 0; i < len; i++) {
data_ptr[(i << 2) + 3] = data_ptr[(i << 2) + 0]; //x to w
data_ptr[(i << 2) + 0] = data_ptr[(i << 2) + 1]; //y to xz
data_ptr[(i << 2) + 2] = data_ptr[(i << 2) + 1];
}
}
convert(Image::FORMAT_LA8);
}
Ref<Image> Image::rgbe_to_srgb() {
if (data.size() == 0)
return Ref<Image>();
ERR_FAIL_COND_V(format != FORMAT_RGBE9995, Ref<Image>());
Ref<Image> new_image;
new_image.instance();
new_image->create(width, height, 0, Image::FORMAT_RGB8);
lock();
new_image->lock();
for (int row = 0; row < height; row++) {
for (int col = 0; col < width; col++) {
new_image->set_pixel(col, row, get_pixel(col, row).to_srgb());
}
}
unlock();
new_image->unlock();
if (has_mipmaps()) {
new_image->generate_mipmaps();
}
return new_image;
}
void Image::bumpmap_to_normalmap(float bump_scale) {
ERR_FAIL_COND(!_can_modify(format));
convert(Image::FORMAT_RF);
PoolVector<uint8_t> result_image; //rgba output
result_image.resize(width * height * 4);
{
PoolVector<uint8_t>::Read rp = data.read();
PoolVector<uint8_t>::Write wp = result_image.write();
unsigned char *write_ptr = wp.ptr();
float *read_ptr = (float *)rp.ptr();
for (int ty = 0; ty < height; ty++) {
int py = ty + 1;
if (py >= height) py -= height;
for (int tx = 0; tx < width; tx++) {
int px = tx + 1;
if (px >= width) px -= width;
float here = read_ptr[ty * width + tx];
float to_right = read_ptr[ty * width + px];
float above = read_ptr[py * width + tx];
Vector3 up = Vector3(0, 1, (here - above) * bump_scale);
Vector3 across = Vector3(1, 0, (to_right - here) * bump_scale);
Vector3 normal = across.cross(up);
normal.normalize();
write_ptr[((ty * width + tx) << 2) + 0] = (127.5 + normal.x * 127.5);
write_ptr[((ty * width + tx) << 2) + 1] = (127.5 + normal.y * 127.5);
write_ptr[((ty * width + tx) << 2) + 2] = (127.5 + normal.z * 127.5);
write_ptr[((ty * width + tx) << 2) + 3] = 255;
}
}
}
format = FORMAT_RGBA8;
data = result_image;
}
void Image::srgb_to_linear() {
if (data.size() == 0)
return;
static const uint8_t srgb2lin[256] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 26, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 33, 34, 35, 36, 36, 37, 38, 38, 39, 40, 41, 42, 42, 43, 44, 45, 46, 47, 47, 48, 49, 50, 51, 52, 53, 54, 55, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 70, 71, 72, 73, 74, 75, 76, 77, 78, 80, 81, 82, 83, 84, 85, 87, 88, 89, 90, 92, 93, 94, 95, 97, 98, 99, 101, 102, 103, 105, 106, 107, 109, 110, 112, 113, 114, 116, 117, 119, 120, 122, 123, 125, 126, 128, 129, 131, 132, 134, 135, 137, 139, 140, 142, 144, 145, 147, 148, 150, 152, 153, 155, 157, 159, 160, 162, 164, 166, 167, 169, 171, 173, 175, 176, 178, 180, 182, 184, 186, 188, 190, 192, 193, 195, 197, 199, 201, 203, 205, 207, 209, 211, 213, 215, 218, 220, 222, 224, 226, 228, 230, 232, 235, 237, 239, 241, 243, 245, 248, 250, 252 };
ERR_FAIL_COND(format != FORMAT_RGB8 && format != FORMAT_RGBA8);
if (format == FORMAT_RGBA8) {
int len = data.size() / 4;
PoolVector<uint8_t>::Write wp = data.write();
unsigned char *data_ptr = wp.ptr();
for (int i = 0; i < len; i++) {
data_ptr[(i << 2) + 0] = srgb2lin[data_ptr[(i << 2) + 0]];
data_ptr[(i << 2) + 1] = srgb2lin[data_ptr[(i << 2) + 1]];
data_ptr[(i << 2) + 2] = srgb2lin[data_ptr[(i << 2) + 2]];
}
} else if (format == FORMAT_RGB8) {
int len = data.size() / 3;
PoolVector<uint8_t>::Write wp = data.write();
unsigned char *data_ptr = wp.ptr();
for (int i = 0; i < len; i++) {
data_ptr[(i * 3) + 0] = srgb2lin[data_ptr[(i * 3) + 0]];
data_ptr[(i * 3) + 1] = srgb2lin[data_ptr[(i * 3) + 1]];
data_ptr[(i * 3) + 2] = srgb2lin[data_ptr[(i * 3) + 2]];
}
}
}
void Image::premultiply_alpha() {
if (data.size() == 0)
return;
if (format != FORMAT_RGBA8)
return; //not needed
PoolVector<uint8_t>::Write wp = data.write();
unsigned char *data_ptr = wp.ptr();
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
uint8_t *ptr = &data_ptr[(i * width + j) * 4];
ptr[0] = (uint16_t(ptr[0]) * uint16_t(ptr[3])) >> 8;
ptr[1] = (uint16_t(ptr[1]) * uint16_t(ptr[3])) >> 8;
ptr[2] = (uint16_t(ptr[2]) * uint16_t(ptr[3])) >> 8;
}
}
}
void Image::fix_alpha_edges() {
if (data.size() == 0)
return;
if (format != FORMAT_RGBA8)
return; //not needed
PoolVector<uint8_t> dcopy = data;
PoolVector<uint8_t>::Read rp = dcopy.read();
const uint8_t *srcptr = rp.ptr();
PoolVector<uint8_t>::Write wp = data.write();
unsigned char *data_ptr = wp.ptr();
const int max_radius = 4;
const int alpha_threshold = 20;
const int max_dist = 0x7FFFFFFF;
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
const uint8_t *rptr = &srcptr[(i * width + j) * 4];
uint8_t *wptr = &data_ptr[(i * width + j) * 4];
if (rptr[3] >= alpha_threshold)
continue;
int closest_dist = max_dist;
uint8_t closest_color[3];
int from_x = MAX(0, j - max_radius);
int to_x = MIN(width - 1, j + max_radius);
int from_y = MAX(0, i - max_radius);
int to_y = MIN(height - 1, i + max_radius);
for (int k = from_y; k <= to_y; k++) {
for (int l = from_x; l <= to_x; l++) {
int dy = i - k;
int dx = j - l;
int dist = dy * dy + dx * dx;
if (dist >= closest_dist)
continue;
const uint8_t *rp = &srcptr[(k * width + l) << 2];
if (rp[3] < alpha_threshold)
continue;
closest_dist = dist;
closest_color[0] = rp[0];
closest_color[1] = rp[1];
closest_color[2] = rp[2];
}
}
if (closest_dist != max_dist) {
wptr[0] = closest_color[0];
wptr[1] = closest_color[1];
wptr[2] = closest_color[2];
}
}
}
}
String Image::get_format_name(Format p_format) {
ERR_FAIL_INDEX_V(p_format, FORMAT_MAX, String());
return format_names[p_format];
}
Error Image::load_png_from_buffer(const PoolVector<uint8_t> &p_array) {
return _load_from_buffer(p_array, _png_mem_loader_func);
}
Error Image::load_jpg_from_buffer(const PoolVector<uint8_t> &p_array) {
return _load_from_buffer(p_array, _jpg_mem_loader_func);
}
Error Image::load_webp_from_buffer(const PoolVector<uint8_t> &p_array) {
return _load_from_buffer(p_array, _webp_mem_loader_func);
}
Error Image::_load_from_buffer(const PoolVector<uint8_t> &p_array, ImageMemLoadFunc p_loader) {
int buffer_size = p_array.size();
ERR_FAIL_COND_V(buffer_size == 0, ERR_INVALID_PARAMETER);
ERR_FAIL_COND_V(!p_loader, ERR_INVALID_PARAMETER);
PoolVector<uint8_t>::Read r = p_array.read();
Ref<Image> image = p_loader(r.ptr(), buffer_size);
ERR_FAIL_COND_V(!image.is_valid(), ERR_PARSE_ERROR);
copy_internals_from(image);
return OK;
}
Image::Image(const uint8_t *p_mem_png_jpg, int p_len) {
width = 0;
height = 0;
mipmaps = false;
format = FORMAT_L8;
if (_png_mem_loader_func) {
copy_internals_from(_png_mem_loader_func(p_mem_png_jpg, p_len));
}
if (empty() && _jpg_mem_loader_func) {
copy_internals_from(_jpg_mem_loader_func(p_mem_png_jpg, p_len));
}
}
Ref<Resource> Image::duplicate(bool p_subresources) const {
Ref<Image> copy;
copy.instance();
copy->_copy_internals_from(*this);
return copy;
}
Image::Image() {
width = 0;
height = 0;
mipmaps = false;
format = FORMAT_L8;
}
Image::~Image() {
if (write_lock.ptr()) {
unlock();
}
}
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