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Image

Inherits: Resource < RefCounted < Object

Image datatype.

Description

Native image datatype. Contains image data which can be converted to an ImageTexture and provides commonly used image processing methods. The maximum width and height for an Image are MAX_WIDTH and MAX_HEIGHT.

An Image cannot be assigned to a texture property of an object directly (such as Sprite2D), and has to be converted manually to an ImageTexture first.

Note: The maximum image size is 16384×16384 pixels due to graphics hardware limitations. Larger images may fail to import.

Tutorials

Properties

Dictionary

data

{ "data": PackedByteArray(), "format": "Lum8", "height": 0, "mipmaps": false, "width": 0 }

Methods

void

adjust_bcs ( float brightness, float contrast, float saturation )

void

blend_rect ( Image src, Rect2i src_rect, Vector2i dst )

void

blend_rect_mask ( Image src, Image mask, Rect2i src_rect, Vector2i dst )

void

blit_rect ( Image src, Rect2i src_rect, Vector2i dst )

void

blit_rect_mask ( Image src, Image mask, Rect2i src_rect, Vector2i dst )

void

bump_map_to_normal_map ( float bump_scale=1.0 )

void

clear_mipmaps ( )

Error

compress ( CompressMode mode, CompressSource source=0, ASTCFormat astc_format=0 )

Error

compress_from_channels ( CompressMode mode, UsedChannels channels, ASTCFormat astc_format=0 )

Dictionary

compute_image_metrics ( Image compared_image, bool use_luma )

void

convert ( Format format )

void

copy_from ( Image src )

Image

create ( int width, int height, bool use_mipmaps, Format format ) static

Image

create_from_data ( int width, int height, bool use_mipmaps, Format format, PackedByteArray data ) static

void

crop ( int width, int height )

Error

decompress ( )

AlphaMode

detect_alpha ( ) const

UsedChannels

detect_used_channels ( CompressSource source=0 ) const

void

fill ( Color color )

void

fill_rect ( Rect2i rect, Color color )

void

fix_alpha_edges ( )

void

flip_x ( )

void

flip_y ( )

Error

generate_mipmaps ( bool renormalize=false )

PackedByteArray

get_data ( ) const

Format

get_format ( ) const

int

get_height ( ) const

int

get_mipmap_offset ( int mipmap ) const

Color

get_pixel ( int x, int y ) const

Color

get_pixelv ( Vector2i point ) const

Image

get_region ( Rect2i region ) const

Vector2i

get_size ( ) const

Rect2i

get_used_rect ( ) const

int

get_width ( ) const

bool

has_mipmaps ( ) const

bool

is_compressed ( ) const

bool

is_empty ( ) const

bool

is_invisible ( ) const

Error

load ( String path )

Error

load_bmp_from_buffer ( PackedByteArray buffer )

Image

load_from_file ( String path ) static

Error

load_jpg_from_buffer ( PackedByteArray buffer )

Error

load_png_from_buffer ( PackedByteArray buffer )

Error

load_tga_from_buffer ( PackedByteArray buffer )

Error

load_webp_from_buffer ( PackedByteArray buffer )

void

normal_map_to_xy ( )

void

premultiply_alpha ( )

void

resize ( int width, int height, Interpolation interpolation=1 )

void

resize_to_po2 ( bool square=false, Interpolation interpolation=1 )

Image

rgbe_to_srgb ( )

void

rotate_90 ( ClockDirection direction )

void

rotate_180 ( )

Error

save_exr ( String path, bool grayscale=false ) const

PackedByteArray

save_exr_to_buffer ( bool grayscale=false ) const

Error

save_jpg ( String path, float quality=0.75 ) const

PackedByteArray

save_jpg_to_buffer ( float quality=0.75 ) const

Error

save_png ( String path ) const

PackedByteArray

save_png_to_buffer ( ) const

Error

save_webp ( String path, bool lossy=false, float quality=0.75 ) const

PackedByteArray

save_webp_to_buffer ( bool lossy=false, float quality=0.75 ) const

void

set_data ( int width, int height, bool use_mipmaps, Format format, PackedByteArray data )

void

set_pixel ( int x, int y, Color color )

void

set_pixelv ( Vector2i point, Color color )

void

shrink_x2 ( )

void

srgb_to_linear ( )


Enumerations

enum Format:

Format FORMAT_L8 = 0

Texture format with a single 8-bit depth representing luminance.

Format FORMAT_LA8 = 1

OpenGL texture format with two values, luminance and alpha each stored with 8 bits.

Format FORMAT_R8 = 2

OpenGL texture format RED with a single component and a bitdepth of 8.

Format FORMAT_RG8 = 3

OpenGL texture format RG with two components and a bitdepth of 8 for each.

Format FORMAT_RGB8 = 4

OpenGL texture format RGB with three components, each with a bitdepth of 8.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_RGBA8 = 5

OpenGL texture format RGBA with four components, each with a bitdepth of 8.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_RGBA4444 = 6

OpenGL texture format RGBA with four components, each with a bitdepth of 4.

Format FORMAT_RGB565 = 7

OpenGL texture format RGB with three components. Red and blue have a bitdepth of 5, and green has a bitdepth of 6.

Format FORMAT_RF = 8

OpenGL texture format GL_R32F where there's one component, a 32-bit floating-point value.

Format FORMAT_RGF = 9

OpenGL texture format GL_RG32F where there are two components, each a 32-bit floating-point values.

Format FORMAT_RGBF = 10

OpenGL texture format GL_RGB32F where there are three components, each a 32-bit floating-point values.

Format FORMAT_RGBAF = 11

OpenGL texture format GL_RGBA32F where there are four components, each a 32-bit floating-point values.

Format FORMAT_RH = 12

OpenGL texture format GL_R16F where there's one component, a 16-bit "half-precision" floating-point value.

Format FORMAT_RGH = 13

OpenGL texture format GL_RG16F where there are two components, each a 16-bit "half-precision" floating-point value.

Format FORMAT_RGBH = 14

OpenGL texture format GL_RGB16F where there are three components, each a 16-bit "half-precision" floating-point value.

Format FORMAT_RGBAH = 15

OpenGL texture format GL_RGBA16F where there are four components, each a 16-bit "half-precision" floating-point value.

Format FORMAT_RGBE9995 = 16

A special OpenGL texture format where the three color components have 9 bits of precision and all three share a single 5-bit exponent.

Format FORMAT_DXT1 = 17

The S3TC texture format that uses Block Compression 1, and is the smallest variation of S3TC, only providing 1 bit of alpha and color data being premultiplied with alpha.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_DXT3 = 18

The S3TC texture format that uses Block Compression 2, and color data is interpreted as not having been premultiplied by alpha. Well suited for images with sharp alpha transitions between translucent and opaque areas.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_DXT5 = 19

The S3TC texture format also known as Block Compression 3 or BC3 that contains 64 bits of alpha channel data followed by 64 bits of DXT1-encoded color data. Color data is not premultiplied by alpha, same as DXT3. DXT5 generally produces superior results for transparent gradients compared to DXT3.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_RGTC_R = 20

Texture format that uses Red Green Texture Compression, normalizing the red channel data using the same compression algorithm that DXT5 uses for the alpha channel.

Format FORMAT_RGTC_RG = 21

Texture format that uses Red Green Texture Compression, normalizing the red and green channel data using the same compression algorithm that DXT5 uses for the alpha channel.

Format FORMAT_BPTC_RGBA = 22

Texture format that uses BPTC compression with unsigned normalized RGBA components.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_BPTC_RGBF = 23

Texture format that uses BPTC compression with signed floating-point RGB components.

Format FORMAT_BPTC_RGBFU = 24

Texture format that uses BPTC compression with unsigned floating-point RGB components.

Format FORMAT_ETC = 25

Ericsson Texture Compression format 1, also referred to as "ETC1", and is part of the OpenGL ES graphics standard. This format cannot store an alpha channel.

Format FORMAT_ETC2_R11 = 26

Ericsson Texture Compression format 2 (R11_EAC variant), which provides one channel of unsigned data.

Format FORMAT_ETC2_R11S = 27

Ericsson Texture Compression format 2 (SIGNED_R11_EAC variant), which provides one channel of signed data.

Format FORMAT_ETC2_RG11 = 28

Ericsson Texture Compression format 2 (RG11_EAC variant), which provides two channels of unsigned data.

Format FORMAT_ETC2_RG11S = 29

Ericsson Texture Compression format 2 (SIGNED_RG11_EAC variant), which provides two channels of signed data.

Format FORMAT_ETC2_RGB8 = 30

Ericsson Texture Compression format 2 (RGB8 variant), which is a follow-up of ETC1 and compresses RGB888 data.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_ETC2_RGBA8 = 31

Ericsson Texture Compression format 2 (RGBA8variant), which compresses RGBA8888 data with full alpha support.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_ETC2_RGB8A1 = 32

Ericsson Texture Compression format 2 (RGB8_PUNCHTHROUGH_ALPHA1 variant), which compresses RGBA data to make alpha either fully transparent or fully opaque.

Note: When creating an ImageTexture, an sRGB to linear color space conversion is performed.

Format FORMAT_ETC2_RA_AS_RG = 33

Ericsson Texture Compression format 2 (RGBA8 variant), which compresses RA data and interprets it as two channels (red and green). See also FORMAT_ETC2_RGBA8.

Format FORMAT_DXT5_RA_AS_RG = 34

The S3TC texture format also known as Block Compression 3 or BC3, which compresses RA data and interprets it as two channels (red and green). See also FORMAT_DXT5.

Format FORMAT_ASTC_4x4 = 35

Adaptive Scalable Texutre Compression. This implements the 4x4 (high quality) mode.

Format FORMAT_ASTC_4x4_HDR = 36

Same format as FORMAT_ASTC_4x4, but with the hint to let the GPU know it is used for HDR.

Format FORMAT_ASTC_8x8 = 37

Adaptive Scalable Texutre Compression. This implements the 8x8 (low quality) mode.

Format FORMAT_ASTC_8x8_HDR = 38

Same format as FORMAT_ASTC_8x8, but with the hint to let the GPU know it is used for HDR.

Format FORMAT_MAX = 39

Represents the size of the Format enum.


enum Interpolation:

Interpolation INTERPOLATE_NEAREST = 0

Performs nearest-neighbor interpolation. If the image is resized, it will be pixelated.

Interpolation INTERPOLATE_BILINEAR = 1

Performs bilinear interpolation. If the image is resized, it will be blurry. This mode is faster than INTERPOLATE_CUBIC, but it results in lower quality.

Interpolation INTERPOLATE_CUBIC = 2

Performs cubic interpolation. If the image is resized, it will be blurry. This mode often gives better results compared to INTERPOLATE_BILINEAR, at the cost of being slower.

Interpolation INTERPOLATE_TRILINEAR = 3

Performs bilinear separately on the two most-suited mipmap levels, then linearly interpolates between them.

It's slower than INTERPOLATE_BILINEAR, but produces higher-quality results with far fewer aliasing artifacts.

If the image does not have mipmaps, they will be generated and used internally, but no mipmaps will be generated on the resulting image.

Note: If you intend to scale multiple copies of the original image, it's better to call generate_mipmaps] on it in advance, to avoid wasting processing power in generating them again and again.

On the other hand, if the image already has mipmaps, they will be used, and a new set will be generated for the resulting image.

Interpolation INTERPOLATE_LANCZOS =