Crate oxiui_render_soft 

softbuffer CPU framebuffer backend — headless / ffi-audit / embedded path.

Use --no-default-features --features software for the GPU-free audit build.

Headless rendering

The headless module provides headless::render_headless_once and headless::RgbaBuffer for CI/ffi-audit usage without any display.

Re-exports

pub use headless::render_headless_once;

pub use headless::render_headless_scene;

pub use headless::PixelFormat;

pub use headless::RgbaBuffer;

pub use headless::HEADLESS_BG_COLOR;

pub use framebuffer::Framebuffer;

pub use clip::ClipRect;

pub use clip::ClipStack;

pub use draw::Canvas;

pub use draw::SrcImage;

pub use gradient::lerp_color;

pub use gradient::GradientStop;

pub use gradient::LinearGradient;

pub use gradient::RadialGradient;

pub use blend::blend_mode;

pub use blend::blend_pixel;

pub use blend::composite_into;

pub use blend::BlendMode;

pub use blend::RgbaUnit;

pub use scanline::fill_polygon;

pub use scanline::fill_triangle;

pub use scanline::FillRule;

pub use path::Cap;

pub use path::Join;

pub use path::Path;

pub use path::PathBuilder;

pub use path::StrokeStyle;

pub use shadow::box_shadow;

pub use shadow::gaussian_blur_alpha;

pub use shadow::GaussianCache;

pub use dither::ordered_dither_rgba;

pub use dither::BayerMatrix;

pub use tile::collect_tiles;

pub use tile::render_tiles;

pub use tile::tiles_for;

pub use tile::DirtyRegion;

pub use tile::Tile;

pub use tile::TileIter;

pub use tile::DEFAULT_TILE_SIZE;

pub use backend::blit_glyph_bitmap;

pub use backend::SoftBackend;

pub use simd_fill::alpha_blend_row;

pub use simd_fill::fill_solid;

pub use simd_fill::gradient_row_horizontal;

pub use fft_blur::gaussian_blur_alpha_fft;

pub use fft_blur::should_use_fft_blur;

pub use fft_blur::FFT_BLUR_MIN_RADIUS;

pub use backend_switch::BackendKind;

pub use backend_switch::DynBackend;

pub use canvas_upload::framebuffer_to_rgba8;

pub use canvas_upload::upload_framebuffer;

pub use canvas_upload::upload_rgba;

Modules

backend

CPU framebuffer backend implementing oxiui_core::paint::RenderBackend. SoftBackend: a oxiui_core::paint::RenderBackend implementation that replays a oxiui_core::paint::DrawList onto a CPU Framebuffer through a single Canvas.

backend_switch

Runtime CPU/GPU backend switching via shared oxiui_core::paint::DrawList.

blend

Extended blend modes (multiply / screen / overlay / darken / lighten) and premultiplied-alpha helpers — additive over Framebuffer::blend. Extended compositing helpers: blend modes + premultiplied-alpha utilities.

canvas_upload

Canvas 2D pixel upload path for wasm32 targets.

clip

Rectangular clip-region stack. Rectangular clip-region stack.

dither

Bayer-matrix ordered dithering for reduced-bit output paths. Bayer-matrix ordered dithering for reduced-bit output paths.

draw

Drawing primitives: rectangles, lines, circles, rounded rects, blits. Drawing primitives operating on a Framebuffer through a clip stack.

fft_blur

FFT-accelerated Gaussian blur for large kernels (OxiFFT, COOLJAPAN ecosystem).

framebuffer

CPU pixel framebuffer (0xAARRGGBB) with blending and RGBA export. CPU pixel framebuffer in 0xAARRGGBB (non-premultiplied) format.

gradient

Linear and radial gradient fills with sRGB colour interpolation. Linear and radial gradient fills with multiple colour stops (sRGB interpolation).

headless

Headless rendering helpers: RgbaBuffer, render_headless_once, and PNG save.

path

2D paths with Bezier flattening, fill (via scanline), and stroke. 2D path representation with Bézier flattening, fill, and stroke.

scanline

Active-Edge-Table scanline polygon / triangle fill with vertical- supersample coverage AA. Supports even-odd and non-zero winding. Active-Edge-Table (AET) scanline rasteriser for polygon and triangle fill.

shadow

Box shadow via separable 1-D Gaussian blur with a kernel cache. Box-shadow via separable 1-D Gaussian blur with a cached kernel.

simd_fill

SIMD-accelerated bulk pixel operations (Pure-Rust wide crate).

tile

64×64 render-tile iterator (rayon-ready; serial driver only this run). 64×64 render-tile iterator.

Structs

SoftRenderQuality

Combined quality preset for SoftBackend::with_quality.

SoftRenderer

CPU-based software renderer using a raw pixel framebuffer.

Enums

AaMode

Anti-aliasing mode for the software renderer.

ShadowQuality

Shadow render quality.

SoftRenderError

Errors specific to the soft-render backend.