Struct WgpuTextureManager 

pub struct WgpuTextureManager { /* private fields */ }

Texture manager for WGPU renderer

This manages the mapping between Dear ImGui texture IDs and WGPU textures, similar to the ImageBindGroups storage in the C++ implementation.

Implementations

impl WgpuTextureManager

pub fn new() -> Self

Create a new texture manager

pub fn register_texture(&mut self, texture: WgpuTexture) -> u64

Register a new texture and return its ID

pub fn get_texture(&self, id: u64) -> Option<&WgpuTexture>

Get a texture by ID

pub fn remove_texture(&mut self, id: u64) -> Option<WgpuTexture>

Remove a texture by ID

pub fn contains_texture(&self, id: u64) -> bool

Check if a texture exists

pub fn insert_texture_with_id(&mut self, id: u64, texture: WgpuTexture)

Insert a texture with a specific ID

pub fn destroy_texture_by_id(&mut self, id: u64)

Destroy a texture by ID

pub fn update_texture_from_data_with_id( &mut self, device: &Device, queue: &Queue, texture_data: &TextureData, texture_id: u64, ) -> RendererResult<()>

Update an existing texture from Dear ImGui texture data with specific ID

pub fn texture_count(&self) -> usize

Get the number of registered textures

pub fn clear(&mut self)

Clear all textures

impl WgpuTextureManager

Texture creation and management functions

pub fn create_texture_from_data( &mut self, device: &Device, queue: &Queue, texture_data: &TextureData, ) -> RendererResult<u64>

Create a texture from Dear ImGui texture data

pub fn update_texture_from_data( &mut self, device: &Device, queue: &Queue, texture_data: &TextureData, ) -> RendererResult<()>

Update an existing texture from Dear ImGui texture data

pub fn destroy_texture(&mut self, texture_id: TextureId)

Destroy a texture

pub fn handle_texture_updates( &mut self, draw_data: &DrawData, device: &Device, queue: &Queue, )

Handle texture updates from Dear ImGui draw data

This iterates DrawData::textures() and applies create/update/destroy requests. For WantCreate, we create the GPU texture, then write the generated id back into the ImTextureData via set_tex_id() and mark status OK (matching C++ backend). For WantUpdates, if a valid id is not yet assigned (first use), we create now and assign the id; otherwise we update in place.

pub fn update_single_texture( &mut self, texture_data: &TextureData, device: &Device, queue: &Queue, ) -> Result<TextureUpdateResult, String>

Update a single texture based on its status

This corresponds to ImGui_ImplWGPU_UpdateTexture in the C++ implementation.

Returns

Returns a TextureUpdateResult that contains the operation result and any status/ID updates that need to be applied to the texture data. This follows Rust’s principle of explicit state management.

Example

let result = texture_manager.update_single_texture(&texture_data, &device, &queue)?;
result.apply_to(&mut texture_data);

Trait Implementations

impl Debug for WgpuTextureManager

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

Formats the value using the given formatter.

impl Default for WgpuTextureManager

fn default() -> WgpuTextureManager

Returns the “default value” for a type.