Struct draw2d::graphics::texture_atlas::GpuAtlas

pub struct GpuAtlas { /* fields omitted */ }

The GPU Atlas is responsible for actually loading texture data into gpu memory.

Implementations

impl GpuAtlas

pub fn new(device: Arc<Device>) -> Result<Self>

Create a new texture atlas which loads image data into GPU memory.

Trait Implementations

impl Drop for GpuAtlas

fn drop(&mut self)

Executes the destructor for this type.

impl TextureAtlas for GpuAtlas

fn add_texture(&mut self, texture: TextureImage) -> Result<TextureHandle>

Add a texture to the atlas and return a texture handle.

Texture handles can be used when drawing to get the texture_index which the shader uses to select this texture from the global array.

unsafe fn take_texture(
    &mut self,
    texture_handle: TextureHandle
) -> Result<TextureImage>

Unsafe Because

• the caller must make sure the atlas is not in use when this method is called

fn build_descriptor_image_info(&self) -> Vec<DescriptorImageInfo>

Build a vector of descriptor image info entries. This can be used when updating a descriptor set with specific image bindings.

fn version(&self) -> AtlasVersion

The atlas’s current version.

fn add_sampler(&mut self, sampler: Sampler) -> Result<SamplerHandle>

Add a named sampler to the atlas. Samplers can be persistently bound to individual textures.

fn bind_sampler_to_texture(
    &mut self,
    sampler_handle: SamplerHandle,
    texture_handle: TextureHandle
) -> Result<()>

Bind a sampler to a texture. Binding are persistent - they do not change until this method is called again.