glyph-brush-0.4.3

• Fix cached vertices erroneously remaining valid after screen dimension change.
• Update hashbrown -> 0.3.

gfx-glyph-0.14.1

• Enlarge textures within GL_MAX_TEXTURE_SIZE if possible.

glyph-brush-0.4.2

• Wasm32: Avoid using random state in the default hasher.

glyph-brush-0.4.1

• Change default section hasher to xxHash as seahash has been shown to collide easily in 32bit environments.

gfx-glyph-0.14

• Update gfx -> 0.18.

glyph-brush-layout-0.1.5

• Add GlyphPositioner::recalculate_glyphs with a default unoptimised implementation. Custom layouts won't be broken by this change, but will need to implement the new function to provide optimised behaviour.
• Optimise built-in layout's recalculate_glyphs for screen position changes with GlyphChange::Geometry.
• Optimise built-in layout's recalculate_glyphs for single color changes with GlyphChange::Color.
• Optimise built-in layout's recalculate_glyphs for alpha changes with GlyphChange::Alpha.
• Optimise layout re-positioning with PositionedGlyph::set_position usage.

glyph-brush-0.4

• Use queue call counting & fine grained hashing to match up previous calls with current calls figuring out what has changed allowing optimised use of recalculate_glyphs for fast layouts.

  • Compute if just geometry (ie section position) has changed -> GlyphChange::Geometry.
  • Compute if just color has changed -> GlyphChange::Color.
  • Compute if just alpha has changed -> GlyphChange::Alpha.

  Provides much faster re-layout performance in these common change scenarios.

• GlyphBrush now generates & caches vertices avoiding regeneration of individual unchanged sections, when another section change forces regeneration of the complete vertex array. The user vertex type V is now in the struct signature.

  pub struct DownstreamGlyphBrush<'font, H = DefaultSectionHasher> {
      // previously: glyph_brush::GlyphBrush<'font, H>,
      inner: glyph_brush::GlyphBrush<'font, DownstreamGlyphVertex, H>,
      ...
  }

These changes result in a big performance improvement for changes to sections amongst other unchanging sections, which is a fairly common thing to want to do. Fully cached (everything unchanging) & worst-case (everything changing/new) are not significantly affected.

name                                      control ns/iter  change ns/iter  diff ns/iter   diff %  speedup 
continually_modify_alpha_of_1_of_3        854,554          349,165             -505,389  -59.14%   x 2.45 
continually_modify_bounds_of_1_of_3       865,162          643,341             -221,821  -25.64%   x 1.34 
continually_modify_color_of_1_of_3        855,189          344,501             -510,688  -59.72%   x 2.48 
continually_modify_end_text_of_1_of_3     857,913          647,491             -210,422  -24.53%   x 1.32 
continually_modify_middle_text_of_1_of_3  856,383          642,055             -214,328  -25.03%   x 1.33 
continually_modify_position_of_1_of_3     866,298          355,794             -510,504  -58.93%   x 2.43 
continually_modify_start_text_of_1_of_3   872,081          654,887             -217,194  -24.91%   x 1.33
no_cache_render_3_medium_sections_fully   1,480,556        1,500,286             19,730    1.33%   x 0.99
render_3_medium_sections_fully            1,136            1,066                    -70   -6.16%   x 1.07

gfx-glyph-0.13.3

• Update glyph_brush -> 0.4, big performance improvements for changing sections.

glyph-brush-layout-0.1.4

• Implement PartialEq for SectionGeometry & SectionText.

glyph-brush-0.3

• Add GlyphCruncher::fonts() to common trait, hoisted from direct implementations. Add something like the following if you implement GlyphCruncher.

  impl GlyphCruncher for Foo {
      // new
      #[inline]
      fn fonts(&self) -> &[Font<'font>] {
          self.glyph_brush.fonts()
      }
  }

• Fix 2-draw style causing texture cache thrashing. Probably a very rare bug.
• Require log 0.4.4 to fix compile issue with older versions.
• Improve documentation.
• Implement PartialEq for *Sections
• Implement Clone, PartialEq for BrushError
• Implement Debug, Clone for other public things.
• Add GlyphBrush::queue_pre_positioned for fully custom glyph positioning.