Struct Image 

pub struct Image {
    pub data: Option<Vec<u8>>,
    pub texture_descriptor: TextureDescriptor<Option<&'static str>, &'static [TextureFormat]>,
    pub sampler: ImageSampler,
    pub texture_view_descriptor: Option<TextureViewDescriptor<Option<&'static str>>>,
    pub asset_usage: RenderAssetUsages,
}

Fields

data: Option<Vec<u8>>

Raw pixel data. If the image is being used as a storage texture which doesn’t need to be initialized by the CPU, then this should be None Otherwise, it should always be Some

texture_descriptor: TextureDescriptor<Option<&'static str>, &'static [TextureFormat]>

sampler: ImageSampler

The ImageSampler to use during rendering.

texture_view_descriptor: Option<TextureViewDescriptor<Option<&'static str>>>

asset_usage: RenderAssetUsages

Implementations

impl Image

pub fn new( size: Extent3d, dimension: TextureDimension, data: Vec<u8>, format: TextureFormat, asset_usage: RenderAssetUsages, ) -> Image

Creates a new image from raw binary data and the corresponding metadata.

Panics

Panics if the length of the data, volume of the size and the size of the format do not match.

pub fn new_uninit( size: Extent3d, dimension: TextureDimension, format: TextureFormat, asset_usage: RenderAssetUsages, ) -> Image

Exactly the same as Image::new, but doesn’t initialize the image

pub fn transparent() -> Image

A transparent white 1x1x1 image.

Contrast to Image::default, which is opaque.

pub fn default_uninit() -> Image

Creates a new uninitialized 1x1x1 image

pub fn new_fill( size: Extent3d, dimension: TextureDimension, pixel: &[u8], format: TextureFormat, asset_usage: RenderAssetUsages, ) -> Image

Creates a new image from raw binary data and the corresponding metadata, by filling the image data with the pixel data repeated multiple times.

Panics

Panics if the size of the format is not a multiple of the length of the pixel data.

pub fn width(&self) -> u32

Returns the width of a 2D image.

pub fn height(&self) -> u32

Returns the height of a 2D image.

pub fn aspect_ratio(&self) -> AspectRatio

Returns the aspect ratio (width / height) of a 2D image.

pub fn size_f32(&self) -> Vec2

Returns the size of a 2D image as f32.

pub fn size(&self) -> UVec2

Returns the size of a 2D image.

pub fn resize(&mut self, size: Extent3d)

Resizes the image to the new size, by removing information or appending 0 to the data. Does not properly resize the contents of the image, but only its internal data buffer.

pub fn reinterpret_size(&mut self, new_size: Extent3d)

Changes the size, asserting that the total number of data elements (pixels) remains the same.

Panics

Panics if the new_size does not have the same volume as to old one.

pub fn reinterpret_stacked_2d_as_array(&mut self, layers: u32)

Takes a 2D image containing vertically stacked images of the same size, and reinterprets it as a 2D array texture, where each of the stacked images becomes one layer of the array. This is primarily for use with the texture2DArray shader uniform type.

Panics

Panics if the texture is not 2D, has more than one layers or is not evenly dividable into the layers.

pub fn convert(&self, new_format: TextureFormat) -> Option<Image>

Convert a texture from a format to another. Only a few formats are supported as input and output:

• TextureFormat::R8Unorm
• TextureFormat::Rg8Unorm
• TextureFormat::Rgba8UnormSrgb

To get Image as a image::DynamicImage see: Image::try_into_dynamic.

pub fn from_buffer( buffer: &[u8], image_type: ImageType<'_>, supported_compressed_formats: CompressedImageFormats, is_srgb: bool, image_sampler: ImageSampler, asset_usage: RenderAssetUsages, ) -> Result<Image, TextureError>

Load a bytes buffer in a Image, according to type image_type, using the image crate

pub fn is_compressed(&self) -> bool

Whether the texture format is compressed or uncompressed

pub fn pixel_data_offset(&self, coords: UVec3) -> Option<usize>

Compute the byte offset where the data of a specific pixel is stored

Returns None if the provided coordinates are out of bounds.

For 2D textures, Z is the layer number. For 1D textures, Y and Z are ignored.

pub fn pixel_bytes(&self, coords: UVec3) -> Option<&[u8]>

Get a reference to the data bytes where a specific pixel’s value is stored

pub fn pixel_bytes_mut(&mut self, coords: UVec3) -> Option<&mut [u8]>

Get a mutable reference to the data bytes where a specific pixel’s value is stored

pub fn get_color_at_1d(&self, x: u32) -> Result<Color, TextureAccessError>

Read the color of a specific pixel (1D texture).

See get_color_at for more details.

pub fn get_color_at(&self, x: u32, y: u32) -> Result<Color, TextureAccessError>

Read the color of a specific pixel (2D texture).

This function will find the raw byte data of a specific pixel and decode it into a user-friendly Color struct for you.

Supports many of the common TextureFormats:

• RGBA/BGRA 8-bit unsigned integer, both sRGB and Linear
• 16-bit and 32-bit unsigned integer
• 16-bit and 32-bit float

Be careful: as the data is converted to Color (which uses f32 internally), there may be issues with precision when using non-f32 TextureFormats. If you read a value you previously wrote using set_color_at, it will not match. If you are working with a 32-bit integer TextureFormat, the value will be inaccurate (as f32 does not have enough bits to represent it exactly).

Single channel (R) formats are assumed to represent grayscale, so the value will be copied to all three RGB channels in the resulting Color.

Other TextureFormats are unsupported, such as:

• block-compressed formats
• non-byte-aligned formats like 10-bit
• signed integer formats

pub fn get_color_at_3d( &self, x: u32, y: u32, z: u32, ) -> Result<Color, TextureAccessError>

Read the color of a specific pixel (2D texture with layers or 3D texture).

See get_color_at for more details.

pub fn set_color_at_1d( &mut self, x: u32, color: Color, ) -> Result<(), TextureAccessError>

Change the color of a specific pixel (1D texture).

See set_color_at for more details.

pub fn set_color_at( &mut self, x: u32, y: u32, color: Color, ) -> Result<(), TextureAccessError>

Change the color of a specific pixel (2D texture).

This function will find the raw byte data of a specific pixel and change it according to a Color you provide. The Color struct will be encoded into the Image’s TextureFormat.

Supports many of the common TextureFormats:

• RGBA/BGRA 8-bit unsigned integer, both sRGB and Linear
• 16-bit and 32-bit unsigned integer (with possibly-limited precision, as Color uses f32)
• 16-bit and 32-bit float

Be careful: writing to non-f32 TextureFormats is lossy! The data has to be converted, so if you read it back using get_color_at, the Color you get will not equal the value you used when writing it using this function.

For R and RG formats, only the respective values from the linear RGB Color will be used.

Other TextureFormats are unsupported, such as:

• block-compressed formats
• non-byte-aligned formats like 10-bit
• signed integer formats

pub fn set_color_at_3d( &mut self, x: u32, y: u32, z: u32, color: Color, ) -> Result<(), TextureAccessError>

Change the color of a specific pixel (2D texture with layers or 3D texture).

See set_color_at for more details.

impl Image

pub fn from_dynamic( dyn_img: DynamicImage, is_srgb: bool, asset_usage: RenderAssetUsages, ) -> Image

Converts a DynamicImage to an Image.

pub fn try_into_dynamic(self) -> Result<DynamicImage, IntoDynamicImageError>

Convert a Image to a DynamicImage. Useful for editing image data. Not all TextureFormat are covered, therefore it will return an error if the format is unsupported. Supported formats are:

• TextureFormat::R8Unorm
• TextureFormat::Rg8Unorm
• TextureFormat::Rgba8UnormSrgb
• TextureFormat::Bgra8UnormSrgb

To convert Image to a different format see: Image::convert.

Trait Implementations

impl Clone for Image

fn clone(&self) -> Image

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Image

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Image

fn default() -> Image

default is a 1x1x1 all ‘1.0’ texture

impl FromReflect for Image

where Image: Any + Send + Sync,

fn from_reflect(reflect: &(dyn PartialReflect + 'static)) -> Option<Image>

Constructs a concrete instance of Self from a reflected value.

fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails.

impl GetTypeRegistration for Image

where Image: Any + Send + Sync,

fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.

fn register_type_dependencies(_registry: &mut TypeRegistry)

Registers other types needed by this type.

impl PartialReflect for Image

where Image: Any + Send + Sync,

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value.

fn to_dynamic(&self) -> Box<dyn PartialReflect>

Converts this reflected value into its dynamic representation based on its kind.

fn try_apply( &mut self, value: &(dyn PartialReflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value.

fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type.

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type.

fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type.

fn reflect_owned(self: Box<Image>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn try_into_reflect( self: Box<Image>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>

Attempts to cast this type to a boxed, fully-reflected value.

fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>

Attempts to cast this type to a fully-reflected value.

fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>

Attempts to cast this type to a mutable, fully-reflected value.

fn into_partial_reflect(self: Box<Image>) -> Box<dyn PartialReflect>

Casts this type to a boxed, reflected value.

fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)

Casts this type to a reflected value.

fn as_partial_reflect_mut(&mut self) -> &mut (dyn PartialReflect + 'static)

Casts this type to a mutable, reflected value.

fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value.

fn reflect_clone(&self) -> Result<Box<dyn Reflect>, ReflectCloneError>

Attempts to clone Self using reflection.

fn apply(&mut self, value: &(dyn PartialReflect + 'static))

Applies a reflected value to this value.

fn clone_value(&self) -> Box<dyn PartialReflect>

👎Deprecated since 0.16.0: to clone reflected values, prefer using reflect_clone. To convert reflected values to dynamic ones, use to_dynamic.

Clones Self into its dynamic representation.

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type).

fn reflect_partial_eq( &self, _value: &(dyn PartialReflect + 'static), ) -> Option<bool>

Returns a “partial equality” comparison result.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Reflect for Image

where Image: Any + Send + Sync,

fn into_any(self: Box<Image>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.

fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.

fn into_reflect(self: Box<Image>) -> Box<dyn Reflect>

Casts this type to a boxed, fully-reflected value.

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a fully-reflected value.

fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable, fully-reflected value.

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value.

impl TypePath for Image

where Image: Any + Send + Sync,

fn type_path() -> &'static str

Returns the fully qualified path of the underlying type.

fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type.

fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous.

fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous.

fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous.

impl Typed for Image

where Image: Any + Send + Sync,

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl VisitAssetDependencies for Image

fn visit_dependencies(&self, visit: &mut impl FnMut(UntypedAssetId))

impl Asset for Image