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General improvements (text and features)

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* Added clear_atlas_region_caches & clear_shape_cache to VEFontCache (Usage Example: On hot-reloads to force refresh the caches if tuning the library)
* Made glyph_draw's over_sample a vec2 for initialization (incase user wants to do some float value multiple of 4x4)
* ADVANCE_SNAP_SMALLFONT_SIZE made a runtime option: Shaper_Context.adv_snap_small_font_threshold
* Some improvement to text hinting and general rendering of text
* Better defaults for initialization of the library
This commit is contained in:
Edward R. Gonzalez
2024-12-29 18:27:46 -05:00
parent 55a4c3dee6
commit 90ca01bdaa
8 changed files with 177 additions and 91 deletions
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9
vefontcache/atlas.odin
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@@ -27,7 +27,8 @@ Atlas :: struct {
width : i32,
height : i32,
glyph_padding : i32,
glyph_padding : i32, // Padding to add to bounds_<width/height>_scaled for choosing which atlas region.
glyph_over_scalar : f32, // Scalar to apply to bounds_<width/height>_scaled for choosing which atlas region.
region_a : Atlas_Region,
region_b : Atlas_Region,
@@ -98,8 +99,8 @@ decide_codepoint_region :: proc(ctx : ^Context, entry : ^Entry, glyph_index : Gl
glyph_buffer := & ctx.glyph_buffer
glyph_padding := f32( atlas.glyph_padding ) * 2
bounds_width_scaled := i32(bounds_width * entry.size_scale + glyph_padding)
bounds_height_scaled := i32(bounds_height * entry.size_scale + glyph_padding)
bounds_width_scaled := i32(bounds_width * entry.size_scale * atlas.glyph_over_scalar + glyph_padding)
bounds_height_scaled := i32(bounds_height * entry.size_scale * atlas.glyph_over_scalar + glyph_padding)
// Use a lookup table for faster region selection
region_lookup := [4]struct { kind: Atlas_Region_Kind, region: ^Atlas_Region } {
@@ -118,7 +119,7 @@ decide_codepoint_region :: proc(ctx : ^Context, entry : ^Entry, glyph_index : Gl
over_sample = \
bounds_width_scaled <= glyph_buffer.width / 2 &&
bounds_height_scaled <= glyph_buffer.height / 2 ? \
{2.0, 2.0} \
{2.0, 2.0} \
: {1.0, 1.0}
return .E, nil, over_sample
}