[−][src]Crate gfx_glyph
Fast GPU cached text rendering using gfx-rs & rusttype.
Makes use of three kinds of caching to optimise frame performance.
- Caching of glyph positioning output to avoid repeated cost of identical text rendering on sequential frames.
- Caches draw calculations to avoid repeated cost of identical text rendering on sequential frames.
- GPU cache logic to dynamically maintain a GPU texture of rendered glyphs.
Example
use gfx_glyph::{GlyphBrushBuilder, Section}; let dejavu: &[u8] = include_bytes!("../../fonts/DejaVuSans.ttf"); let mut glyph_brush = GlyphBrushBuilder::using_font_bytes(dejavu).build(gfx_factory.clone()); let section = Section { text: "Hello gfx_glyph", ..Section::default() }; glyph_brush.queue(section); glyph_brush.queue(some_other_section); glyph_brush.draw_queued(&mut gfx_encoder, &gfx_color, &gfx_depth)?;
Modules
rusttype | Re-exported rusttype types. |
Structs
Font | A single font. This may or may not own the font data. |
FontId | Id for a font |
GlyphBrush | Object allowing glyph drawing, containing cache state. Manages glyph positioning cacheing, glyph draw caching & efficient GPU texture cache updating and re-sizing on demand. |
GlyphBrushBuilder | Builder for a |
OwnedSectionText | |
OwnedVariedSection | |
Point | A point in 2-dimensional space, with each dimension of type |
PositionedGlyph | A glyph augmented with positioning and scaling information. You can query such a glyph for information that depends on the scale and position of the glyph. |
Rect | A rectangle, with top-left corner at |
Scale | Defines the size of a rendered face of a font, in pixels, horizontally and
vertically. A vertical scale of |
Section | An object that contains all the info to render a section of text. |
SectionGeometry | |
SectionText | |
VariedSection | An object that contains all the info to render a varied section of text. That is one including many parts with differing fonts/scales/colors bowing to a single layout. |
Enums
BuiltInLineBreaker | Built-in linebreaking logic. |
HorizontalAlign | Describes horizontal alignment preference for positioning & bounds. |
Layout | Built-in |
LineBreak | Indicator that a character is a line break, soft or hard. Includes the offset (byte-index) position. |
SharedBytes |
|
VerticalAlign | Describes vertical alignment preference for positioning & bounds. Currently a placeholder for future functionality. |
Traits
FontMap | |
GlyphCruncher | Common glyph layout logic. |
GlyphPositioner | Logic to calculate glyph positioning using |
LineBreaker | Producer of a |
Type Definitions
PositionedGlyphIter |
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