d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
447 lines
17 KiB
C++
447 lines
17 KiB
C++
/**************************************************************************/
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/* image.h */
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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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#ifndef IMAGE_H
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#define IMAGE_H
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#include "core/io/resource.h"
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#include "core/math/color.h"
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#include "core/math/rect2.h"
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/**
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* Image storage class. This is used to store an image in user memory, as well as
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* providing some basic methods for image manipulation.
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* Images can be loaded from a file, or registered into the Render object as textures.
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*/
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class Image;
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typedef Error (*SavePNGFunc)(const String &p_path, const Ref<Image> &p_img);
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typedef Vector<uint8_t> (*SavePNGBufferFunc)(const Ref<Image> &p_img);
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typedef Error (*SaveJPGFunc)(const String &p_path, const Ref<Image> &p_img, float p_quality);
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typedef Vector<uint8_t> (*SaveJPGBufferFunc)(const Ref<Image> &p_img, float p_quality);
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typedef Ref<Image> (*ImageMemLoadFunc)(const uint8_t *p_png, int p_size);
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typedef Error (*SaveWebPFunc)(const String &p_path, const Ref<Image> &p_img, const bool p_lossy, const float p_quality);
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typedef Vector<uint8_t> (*SaveWebPBufferFunc)(const Ref<Image> &p_img, const bool p_lossy, const float p_quality);
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typedef Error (*SaveEXRFunc)(const String &p_path, const Ref<Image> &p_img, bool p_grayscale);
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typedef Vector<uint8_t> (*SaveEXRBufferFunc)(const Ref<Image> &p_img, bool p_grayscale);
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class Image : public Resource {
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GDCLASS(Image, Resource);
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public:
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static SavePNGFunc save_png_func;
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static SaveJPGFunc save_jpg_func;
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static SaveEXRFunc save_exr_func;
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static SavePNGBufferFunc save_png_buffer_func;
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static SaveEXRBufferFunc save_exr_buffer_func;
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static SaveJPGBufferFunc save_jpg_buffer_func;
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static SaveWebPFunc save_webp_func;
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static SaveWebPBufferFunc save_webp_buffer_func;
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enum {
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MAX_WIDTH = (1 << 24), // force a limit somehow
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MAX_HEIGHT = (1 << 24), // force a limit somehow
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MAX_PIXELS = 268435456
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};
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enum Format {
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FORMAT_L8, //luminance
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FORMAT_LA8, //luminance-alpha
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FORMAT_R8,
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FORMAT_RG8,
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FORMAT_RGB8,
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FORMAT_RGBA8,
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FORMAT_RGBA4444,
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FORMAT_RGB565,
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FORMAT_RF, //float
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FORMAT_RGF,
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FORMAT_RGBF,
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FORMAT_RGBAF,
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FORMAT_RH, //half float
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FORMAT_RGH,
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FORMAT_RGBH,
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FORMAT_RGBAH,
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FORMAT_RGBE9995,
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FORMAT_DXT1, //s3tc bc1
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FORMAT_DXT3, //bc2
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FORMAT_DXT5, //bc3
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FORMAT_RGTC_R,
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FORMAT_RGTC_RG,
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FORMAT_BPTC_RGBA, //btpc bc7
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FORMAT_BPTC_RGBF, //float bc6h
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FORMAT_BPTC_RGBFU, //unsigned float bc6hu
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FORMAT_ETC, //etc1
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FORMAT_ETC2_R11, //etc2
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FORMAT_ETC2_R11S, //signed, NOT srgb.
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FORMAT_ETC2_RG11,
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FORMAT_ETC2_RG11S,
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FORMAT_ETC2_RGB8,
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FORMAT_ETC2_RGBA8,
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FORMAT_ETC2_RGB8A1,
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FORMAT_ETC2_RA_AS_RG, //used to make basis universal happy
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FORMAT_DXT5_RA_AS_RG, //used to make basis universal happy
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FORMAT_ASTC_4x4,
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FORMAT_ASTC_4x4_HDR,
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FORMAT_ASTC_8x8,
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FORMAT_ASTC_8x8_HDR,
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FORMAT_MAX
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};
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static const char *format_names[FORMAT_MAX];
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enum Interpolation {
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INTERPOLATE_NEAREST,
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INTERPOLATE_BILINEAR,
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INTERPOLATE_CUBIC,
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INTERPOLATE_TRILINEAR,
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INTERPOLATE_LANCZOS,
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/* INTERPOLATE_TRICUBIC, */
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/* INTERPOLATE GAUSS */
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};
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//this is used for compression
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enum UsedChannels {
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USED_CHANNELS_L,
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USED_CHANNELS_LA,
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USED_CHANNELS_R,
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USED_CHANNELS_RG,
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USED_CHANNELS_RGB,
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USED_CHANNELS_RGBA,
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};
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//some functions provided by something else
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enum ASTCFormat {
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ASTC_FORMAT_4x4,
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ASTC_FORMAT_8x8,
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};
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static ImageMemLoadFunc _png_mem_loader_func;
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static ImageMemLoadFunc _jpg_mem_loader_func;
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static ImageMemLoadFunc _webp_mem_loader_func;
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static ImageMemLoadFunc _tga_mem_loader_func;
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static ImageMemLoadFunc _bmp_mem_loader_func;
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static void (*_image_compress_bc_func)(Image *, float, UsedChannels p_channels);
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static void (*_image_compress_bptc_func)(Image *, float p_lossy_quality, UsedChannels p_channels);
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static void (*_image_compress_etc1_func)(Image *, float);
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static void (*_image_compress_etc2_func)(Image *, float, UsedChannels p_channels);
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static void (*_image_compress_astc_func)(Image *, float, ASTCFormat p_format);
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static void (*_image_decompress_bc)(Image *);
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static void (*_image_decompress_bptc)(Image *);
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static void (*_image_decompress_etc1)(Image *);
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static void (*_image_decompress_etc2)(Image *);
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static void (*_image_decompress_astc)(Image *);
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static Vector<uint8_t> (*webp_lossy_packer)(const Ref<Image> &p_image, float p_quality);
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static Vector<uint8_t> (*webp_lossless_packer)(const Ref<Image> &p_image);
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static Ref<Image> (*webp_unpacker)(const Vector<uint8_t> &p_buffer);
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static Vector<uint8_t> (*png_packer)(const Ref<Image> &p_image);
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static Ref<Image> (*png_unpacker)(const Vector<uint8_t> &p_buffer);
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static Vector<uint8_t> (*basis_universal_packer)(const Ref<Image> &p_image, UsedChannels p_channels);
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static Ref<Image> (*basis_universal_unpacker)(const Vector<uint8_t> &p_buffer);
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static Ref<Image> (*basis_universal_unpacker_ptr)(const uint8_t *p_data, int p_size);
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_FORCE_INLINE_ Color _get_color_at_ofs(const uint8_t *ptr, uint32_t ofs) const;
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_FORCE_INLINE_ void _set_color_at_ofs(uint8_t *ptr, uint32_t ofs, const Color &p_color);
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protected:
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static void _bind_methods();
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private:
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Format format = FORMAT_L8;
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Vector<uint8_t> data;
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int width = 0;
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int height = 0;
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bool mipmaps = false;
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void _copy_internals_from(const Image &p_image) {
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format = p_image.format;
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width = p_image.width;
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height = p_image.height;
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mipmaps = p_image.mipmaps;
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data = p_image.data;
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}
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_FORCE_INLINE_ void _get_mipmap_offset_and_size(int p_mipmap, int &r_offset, int &r_width, int &r_height) const; //get where the mipmap begins in data
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static int _get_dst_image_size(int p_width, int p_height, Format p_format, int &r_mipmaps, int p_mipmaps = -1, int *r_mm_width = nullptr, int *r_mm_height = nullptr);
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bool _can_modify(Format p_format) const;
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_FORCE_INLINE_ void _get_clipped_src_and_dest_rects(const Ref<Image> &p_src, const Rect2i &p_src_rect, const Point2i &p_dest, Rect2i &r_clipped_src_rect, Rect2i &r_clipped_dest_rect) const;
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_FORCE_INLINE_ void _put_pixelb(int p_x, int p_y, uint32_t p_pixel_size, uint8_t *p_data, const uint8_t *p_pixel);
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_FORCE_INLINE_ void _get_pixelb(int p_x, int p_y, uint32_t p_pixel_size, const uint8_t *p_data, uint8_t *p_pixel);
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_FORCE_INLINE_ void _repeat_pixel_over_subsequent_memory(uint8_t *p_pixel, int p_pixel_size, int p_count);
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void _set_data(const Dictionary &p_data);
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Dictionary _get_data() const;
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Error _load_from_buffer(const Vector<uint8_t> &p_array, ImageMemLoadFunc p_loader);
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static void average_4_uint8(uint8_t &p_out, const uint8_t &p_a, const uint8_t &p_b, const uint8_t &p_c, const uint8_t &p_d);
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static void average_4_float(float &p_out, const float &p_a, const float &p_b, const float &p_c, const float &p_d);
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static void average_4_half(uint16_t &p_out, const uint16_t &p_a, const uint16_t &p_b, const uint16_t &p_c, const uint16_t &p_d);
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static void average_4_rgbe9995(uint32_t &p_out, const uint32_t &p_a, const uint32_t &p_b, const uint32_t &p_c, const uint32_t &p_d);
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static void renormalize_uint8(uint8_t *p_rgb);
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static void renormalize_float(float *p_rgb);
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static void renormalize_half(uint16_t *p_rgb);
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static void renormalize_rgbe9995(uint32_t *p_rgb);
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public:
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int get_width() const; ///< Get image width
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int get_height() const; ///< Get image height
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Size2i get_size() const;
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bool has_mipmaps() const;
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int get_mipmap_count() const;
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/**
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* Convert the image to another format, conversion only to raw byte format
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*/
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void convert(Format p_new_format);
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/**
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* Get the current image format.
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*/
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Format get_format() const;
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int get_mipmap_byte_size(int p_mipmap) const; //get where the mipmap begins in data
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int get_mipmap_offset(int p_mipmap) const; //get where the mipmap begins in data
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void get_mipmap_offset_and_size(int p_mipmap, int &r_ofs, int &r_size) const; //get where the mipmap begins in data
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void get_mipmap_offset_size_and_dimensions(int p_mipmap, int &r_ofs, int &r_size, int &w, int &h) const; //get where the mipmap begins in data
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enum Image3DValidateError {
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VALIDATE_3D_OK,
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VALIDATE_3D_ERR_IMAGE_EMPTY,
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VALIDATE_3D_ERR_MISSING_IMAGES,
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VALIDATE_3D_ERR_EXTRA_IMAGES,
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VALIDATE_3D_ERR_IMAGE_SIZE_MISMATCH,
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VALIDATE_3D_ERR_IMAGE_FORMAT_MISMATCH,
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VALIDATE_3D_ERR_IMAGE_HAS_MIPMAPS,
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};
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static Image3DValidateError validate_3d_image(Format p_format, int p_width, int p_height, int p_depth, bool p_mipmaps, const Vector<Ref<Image>> &p_images);
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static String get_3d_image_validation_error_text(Image3DValidateError p_error);
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/**
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* Resize the image, using the preferred interpolation method.
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*/
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void resize_to_po2(bool p_square = false, Interpolation p_interpolation = INTERPOLATE_BILINEAR);
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void resize(int p_width, int p_height, Interpolation p_interpolation = INTERPOLATE_BILINEAR);
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void shrink_x2();
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bool is_size_po2() const;
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/**
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* Crop the image to a specific size, if larger, then the image is filled by black
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*/
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void crop_from_point(int p_x, int p_y, int p_width, int p_height);
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void crop(int p_width, int p_height);
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void rotate_90(ClockDirection p_direction);
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void rotate_180();
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void flip_x();
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void flip_y();
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/**
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* Generate a mipmap to an image (creates an image 1/4 the size, with averaging of 4->1)
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*/
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Error generate_mipmaps(bool p_renormalize = false);
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enum RoughnessChannel {
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ROUGHNESS_CHANNEL_R,
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ROUGHNESS_CHANNEL_G,
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ROUGHNESS_CHANNEL_B,
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ROUGHNESS_CHANNEL_A,
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ROUGHNESS_CHANNEL_L,
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};
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Error generate_mipmap_roughness(RoughnessChannel p_roughness_channel, const Ref<Image> &p_normal_map);
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void clear_mipmaps();
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void normalize(); //for normal maps
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/**
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* Creates new internal image data of a given size and format. Current image will be lost.
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*/
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void initialize_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format);
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void initialize_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
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void initialize_data(const char **p_xpm);
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/**
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* returns true when the image is empty (0,0) in size
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*/
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bool is_empty() const;
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Vector<uint8_t> get_data() const;
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Error load(const String &p_path);
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static Ref<Image> load_from_file(const String &p_path);
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Error save_png(const String &p_path) const;
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Error save_jpg(const String &p_path, float p_quality = 0.75) const;
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Vector<uint8_t> save_png_to_buffer() const;
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Vector<uint8_t> save_jpg_to_buffer(float p_quality = 0.75) const;
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Vector<uint8_t> save_exr_to_buffer(bool p_grayscale) const;
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Error save_exr(const String &p_path, bool p_grayscale) const;
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Error save_webp(const String &p_path, const bool p_lossy = false, const float p_quality = 0.75f) const;
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Vector<uint8_t> save_webp_to_buffer(const bool p_lossy = false, const float p_quality = 0.75f) const;
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static Ref<Image> create_empty(int p_width, int p_height, bool p_use_mipmaps, Format p_format);
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static Ref<Image> create_from_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
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void set_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
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/**
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* create an empty image
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*/
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Image() {}
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/**
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* create an empty image of a specific size and format
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*/
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Image(int p_width, int p_height, bool p_use_mipmaps, Format p_format);
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/**
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* import an image of a specific size and format from a pointer
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*/
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Image(int p_width, int p_height, bool p_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
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~Image() {}
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enum AlphaMode {
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ALPHA_NONE,
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ALPHA_BIT,
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ALPHA_BLEND
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};
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AlphaMode detect_alpha() const;
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bool is_invisible() const;
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static int get_format_pixel_size(Format p_format);
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static int get_format_pixel_rshift(Format p_format);
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static int get_format_block_size(Format p_format);
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static void get_format_min_pixel_size(Format p_format, int &r_w, int &r_h);
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static int get_image_data_size(int p_width, int p_height, Format p_format, bool p_mipmaps = false);
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static int get_image_required_mipmaps(int p_width, int p_height, Format p_format);
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static Size2i get_image_mipmap_size(int p_width, int p_height, Format p_format, int p_mipmap);
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static int get_image_mipmap_offset(int p_width, int p_height, Format p_format, int p_mipmap);
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static int get_image_mipmap_offset_and_dimensions(int p_width, int p_height, Format p_format, int p_mipmap, int &r_w, int &r_h);
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enum CompressMode {
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COMPRESS_S3TC,
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COMPRESS_ETC,
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COMPRESS_ETC2,
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COMPRESS_BPTC,
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COMPRESS_ASTC,
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COMPRESS_MAX,
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};
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enum CompressSource {
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COMPRESS_SOURCE_GENERIC,
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COMPRESS_SOURCE_SRGB,
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COMPRESS_SOURCE_NORMAL,
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COMPRESS_SOURCE_MAX,
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};
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Error compress(CompressMode p_mode, CompressSource p_source = COMPRESS_SOURCE_GENERIC, float p_lossy_quality = 0.7, ASTCFormat p_astc_format = ASTC_FORMAT_4x4);
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Error compress_from_channels(CompressMode p_mode, UsedChannels p_channels, float p_lossy_quality = 0.7, ASTCFormat p_astc_format = ASTC_FORMAT_4x4);
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Error decompress();
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bool is_compressed() const;
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void fix_alpha_edges();
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void premultiply_alpha();
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void srgb_to_linear();
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void normal_map_to_xy();
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Ref<Image> rgbe_to_srgb();
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Ref<Image> get_image_from_mipmap(int p_mipamp) const;
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void bump_map_to_normal_map(float bump_scale = 1.0);
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void blit_rect(const Ref<Image> &p_src, const Rect2i &p_src_rect, const Point2i &p_dest);
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void blit_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2i &p_src_rect, const Point2i &p_dest);
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void blend_rect(const Ref<Image> &p_src, const Rect2i &p_src_rect, const Point2i &p_dest);
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void blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2i &p_src_rect, const Point2i &p_dest);
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void fill(const Color &p_color);
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void fill_rect(const Rect2i &p_rect, const Color &p_color);
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Rect2i get_used_rect() const;
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Ref<Image> get_region(const Rect2i &p_area) const;
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static void set_compress_bc_func(void (*p_compress_func)(Image *, float, UsedChannels));
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static void set_compress_bptc_func(void (*p_compress_func)(Image *, float, UsedChannels));
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static String get_format_name(Format p_format);
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Error load_png_from_buffer(const Vector<uint8_t> &p_array);
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Error load_jpg_from_buffer(const Vector<uint8_t> &p_array);
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Error load_webp_from_buffer(const Vector<uint8_t> &p_array);
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Error load_tga_from_buffer(const Vector<uint8_t> &p_array);
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Error load_bmp_from_buffer(const Vector<uint8_t> &p_array);
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void convert_rg_to_ra_rgba8();
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void convert_ra_rgba8_to_rg();
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void convert_rgba8_to_bgra8();
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Image(const uint8_t *p_mem_png_jpg, int p_len = -1);
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Image(const char **p_xpm);
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virtual Ref<Resource> duplicate(bool p_subresources = false) const override;
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UsedChannels detect_used_channels(CompressSource p_source = COMPRESS_SOURCE_GENERIC) const;
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void optimize_channels();
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Color get_pixelv(const Point2i &p_point) const;
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Color get_pixel(int p_x, int p_y) const;
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void set_pixelv(const Point2i &p_point, const Color &p_color);
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void set_pixel(int p_x, int p_y, const Color &p_color);
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void adjust_bcs(float p_brightness, float p_contrast, float p_saturation);
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void set_as_black();
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void copy_internals_from(const Ref<Image> &p_image) {
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ERR_FAIL_COND_MSG(p_image.is_null(), "It's not a reference to a valid Image object.");
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format = p_image->format;
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width = p_image->width;
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height = p_image->height;
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mipmaps = p_image->mipmaps;
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data = p_image->data;
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}
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Dictionary compute_image_metrics(const Ref<Image> p_compared_image, bool p_luma_metric = true);
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};
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VARIANT_ENUM_CAST(Image::Format)
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VARIANT_ENUM_CAST(Image::Interpolation)
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VARIANT_ENUM_CAST(Image::CompressMode)
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VARIANT_ENUM_CAST(Image::CompressSource)
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VARIANT_ENUM_CAST(Image::UsedChannels)
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VARIANT_ENUM_CAST(Image::AlphaMode)
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VARIANT_ENUM_CAST(Image::RoughnessChannel)
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VARIANT_ENUM_CAST(Image::ASTCFormat)
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#endif // IMAGE_H
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