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wrining draw_text_batch

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Gotta juice it out
This commit is contained in:
Edward R. Gonzalez 2024-06-28 06:26:21 -04:00
parent bb52139e17
commit b8665d0bc2
1 changed files with 47 additions and 21 deletions
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68
code/font/VEFontCache/draw.odin
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@ -575,36 +575,62 @@ draw_filled_path :: proc( draw_list : ^DrawList, outside_point : Vec2, path : []
}
}
draw_text_batch :: proc( ctx : ^Context, entry : ^Entry, shaped : ^ShapedText,
draw_text_batch :: proc(ctx: ^Context, entry: ^Entry, shaped: ^ShapedText,
batch_start_idx, batch_end_idx : i32,
position, scale : Vec2,
snap_width, snap_height : f32 )
position, scale : Vec2,
snap_width, snap_height : f32 )
{
flush_glyph_buffer_to_atlas( ctx )
flush_glyph_buffer_to_atlas(ctx)
atlas := & ctx.atlas
atlas_size := Vec2{ f32(atlas.width), f32(atlas.height) }
glyph_padding := f32(atlas.glyph_padding)
for index := batch_start_idx; index < batch_end_idx; index += 1
{
glyph_index := shaped.glyphs[ index ]
glyph_index := shaped.glyphs[index]
if glyph_index == 0 do continue
if parser_is_glyph_empty( & entry.parser_info, glyph_index ) do continue
if glyph_index == 0 || parser_is_glyph_empty( & entry.parser_info, glyph_index) do continue
region_kind, region, over_sample := decide_codepoint_region( ctx, entry, glyph_index )
lru_code := font_glyph_lru_code(entry.id, glyph_index)
atlas_index := cast(i32) -1
region_kind, region, over_sample := decide_codepoint_region( ctx, entry, glyph_index )
lru_code := font_glyph_lru_code( entry.id, glyph_index )
atlas_index := region_kind != .E ? LRU_get( & region.state, lru_code ) : -1
bounds_0, bounds_1 := parser_get_glyph_box( & entry.parser_info, glyph_index )
vbounds_0 := vec2(bounds_0)
vbounds_1 := vec2(bounds_1)
bounds_size := Vec2 { vbounds_1.x - vbounds_0.x, vbounds_1.y - vbounds_0.y }
if region_kind != .E do atlas_index = LRU_get( & region.state, lru_code )
bounds_0, bounds_1 := parser_get_glyph_box( & entry.parser_info, glyph_index )
shaped_position := shaped.positions[index]
glyph_translate := position + shaped_position * scale
shaped_position := shaped.positions[index]
glyph_translate := position + shaped_position * scale
if region_kind == .E
{
directly_draw_massive_glyph(ctx, entry, glyph_index,
vbounds_0, vbounds_1,
bounds_size,
over_sample, glyph_translate, scale )
}
else if atlas_index != -1
{
slot_position, _ := atlas_bbox( atlas, region_kind, atlas_index )
glyph_scale := bounds_size * entry.size_scale + glyph_padding
bounds_0_scaled := ceil( vbounds_0 * entry.size_scale )
dst := glyph_translate + (bounds_0_scaled - glyph_padding) * scale
dst_scale := glyph_scale * scale
textspace_x_form( & slot_position, & glyph_scale, atlas_size )
glyph_cached := draw_cached_glyph( ctx, shaped,
entry, glyph_index,
lru_code, atlas_index,
vec2(bounds_0), vec2(bounds_1),
region_kind, region, over_sample,
glyph_translate, scale )
assert( glyph_cached == true )
call := DrawCall_Default
call.pass = .Target
call.colour = ctx.colour
call.start_index = u32(len(ctx.draw_list.indices))
blit_quad(&ctx.draw_list,
dst, dst + dst_scale,
slot_position, slot_position + glyph_scale )
call.end_index = u32(len(ctx.draw_list.indices))
append(&ctx.draw_list.calls, call)
}
}
}