Struct egui_fltk_frontend::RenderPass

pub struct RenderPass<'a> {
    pub paint_callback_resources: TypeMap,
    /* private fields */
}

Render pass to render a egui based GUI.

Fields

paint_callback_resources: TypeMap

Storage for use by [egui::PaintCallback]’s that need to store resources such as render pipelines that must have the lifetime of the renderpass.

Implementations

impl<'a> RenderPass<'a>

pub fn new(
    device: &Device,
    texture_format: TextureFormat,
    msaa_samples: u32
) -> Self

Creates a new render pass to render a egui UI.

If the format passed is not a *Srgb format, the shader will automatically convert to sRGB colors in the shader.

pub fn execute(
    &self,
    encoder: &mut CommandEncoder,
    color_attachment: &TextureView,
    paint_jobs: Vec<ClippedPrimitive>,
    screen_descriptor: &ScreenDescriptor,
    clear_color: Option<Color>
)

Executes the egui render pass.

pub fn execute_with_renderpass<'rpass>(
    &'rpass self,
    rpass: &mut RenderPass<'rpass>,
    paint_jobs: Vec<ClippedPrimitive>,
    screen_descriptor: &ScreenDescriptor
)

Executes the egui render pass onto an existing wgpu renderpass.

pub fn update_texture(
    &mut self,
    device: &Device,
    queue: &Queue,
    id: TextureId,
    image_delta: &ImageDelta
)

Should be called before execute().

pub fn free_texture(&mut self, id: &TextureId)

pub fn texture(&self, id: &TextureId) -> Option<&(Option<Texture>, BindGroup)>

Get the WGPU texture and bind group associated to a texture that has been allocated by egui.

This could be used by custom paint hooks to render images that have been added through with egui_extras::RetainedImage or egui::Context::load_texture.

pub fn register_native_texture(
    &mut self,
    device: &Device,
    texture: &TextureView,
    texture_filter: FilterMode
) -> TextureId

Registers a wgpu::Texture with a egui::TextureId.

This enables the application to reference the texture inside an image ui element. This effectively enables off-screen rendering inside the egui UI. Texture must have the texture format TextureFormat::Rgba8UnormSrgb and Texture usage TextureUsage::SAMPLED.

pub fn register_native_texture_with_sampler_options(
    &mut self,
    device: &Device,
    texture: &TextureView,
    sampler_descriptor: SamplerDescriptor<'_>
) -> TextureId

Registers a wgpu::Texture with a egui::TextureId while also accepting custom wgpu::SamplerDescriptor options.

This allows applications to specify individual minification/magnification filters as well as custom mipmap and tiling options.

The Texture must have the format TextureFormat::Rgba8UnormSrgb and usage TextureUsage::SAMPLED. Any compare function supplied in the SamplerDescriptor will be ignored.

pub fn update_buffers(
    &mut self,
    device: &Device,
    queue: &Queue,
    paint_jobs: &[ClippedPrimitive],
    screen_descriptor: &ScreenDescriptor
)

Uploads the uniform, vertex and index data used by the render pass. Should be called before execute().