Struct GlTextureCache 

pub struct GlTextureCache {
    pub solved_textures: BTreeMap<DomId, BTreeMap<NodeId, (ImageKey, ImageDescriptor, ExternalImageId)>>,
    pub hashes: BTreeMap<(DomId, NodeId, ImageRefHash), ImageRefHash>,
}

Fields

solved_textures: BTreeMap<DomId, BTreeMap<NodeId, (ImageKey, ImageDescriptor, ExternalImageId)>>

hashes: BTreeMap<(DomId, NodeId, ImageRefHash), ImageRefHash>

Implementations

impl GlTextureCache

pub fn empty() -> Self

Initializes an empty cache

pub fn update_texture( &mut self, dom_id: DomId, node_id: NodeId, document_id: DocumentId, epoch: Epoch, new_texture: Texture, insert_into_active_gl_textures_fn: &GlStoreImageFn, ) -> Option<ExternalImageId>

Updates a given texture

This is called when a texture needs to be re-rendered (e.g., on resize or animation frame). It updates the texture in the WebRender external image cache and updates the internal descriptor to reflect the new size.

Arguments

• dom_id - The DOM ID containing the texture
• node_id - The node ID of the image element
• document_id - The WebRender document ID
• epoch - The current frame epoch
• new_texture - The new texture to use
• insert_into_active_gl_textures_fn - Function to insert the texture into the cache

Returns

The ExternalImageId if successful, None if the texture wasn’t found in the cache

Trait Implementations

impl Debug for GlTextureCache

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

Formats the value using the given formatter.

impl Default for GlTextureCache

fn default() -> GlTextureCache

Returns the “default value” for a type.

impl Send for GlTextureCache