Enum SurfaceFormat 

pub enum SurfaceFormat {
    Rgba8UnormSrgb,
    Bgra8UnormSrgb,
    Rgba8Unorm,
    Rgba16Float,
}

Pixel format of an AppTexture. The widget composites by sampling the texture; the backend picks a sampler / shader path that matches.

0.3.6 ships the three RGBA8 variants below — enough for 3D viewport output (typically a surface-format-matching *Srgb), video decoded to RGBA, and rumble-style animated frames. Future variants (HDR, YUV) slot in here without breaking the widget surface.

Variants

Rgba8UnormSrgb

8-bit RGBA, sRGB-encoded. Sampling decodes to linear, matching the rest of Damascene’s pipeline (stock::image, text, rounded_rect).

Bgra8UnormSrgb

8-bit BGRA, sRGB-encoded. The native swapchain format on most platforms — apps that render their 3D scene into a swapchain- shaped texture can hand it in directly.

Rgba8Unorm

8-bit RGBA, linear. For content that’s already in linear space (e.g. tone-mapped HDR collapsed to 8-bit, ink rasterisers) and shouldn’t go through an extra sRGB decode.

Rgba16Float

16-bit float RGBA, linear extended-range. For HDR content authored in scene-linear light — values may exceed 1.0 (and the surface holds them verbatim). Composited like Self::Rgba8Unorm (linear, no sRGB decode); the extra range only carries through to the display when the swapchain is itself an extended-range float surface (see the host’s HDR swapchain selection), otherwise it clamps at output.

Trait Implementations

impl Clone for SurfaceFormat

fn clone(&self) -> SurfaceFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SurfaceFormat

impl Debug for SurfaceFormat

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

Formats the value using the given formatter.

impl Eq for SurfaceFormat

impl PartialEq for SurfaceFormat

fn eq(&self, other: &SurfaceFormat) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SurfaceFormat