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More fixes, more letters

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This commit is contained in:
Edward R. Gonzalez
2024-06-15 08:20:58 -04:00
parent 5f09c22f11
commit 13f24b4ae9
6 changed files with 43 additions and 37 deletions
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33
code/font/VEFontCache/VEFontCache.odin
View File

@@ -25,7 +25,7 @@ Glyph :: distinct i32
Colour :: [4]f32
Vec2 :: [2]f32
Vec2i :: [2]u32
Vec2i :: [2]i32
AtlasRegionKind :: enum u8 {
None = 0x00,
@@ -139,10 +139,15 @@ eval_point_on_bezier3 :: proc( p0, p1, p2 : Vec2, alpha : f32 ) -> Vec2
// ve_fontcache_eval_bezier (cubic)
eval_point_on_bezier4 :: proc( p0, p1, p2, p3 : Vec2, alpha : f32 ) -> Vec2
{
start_point := p0 * (1 - alpha) * (1 - alpha) * (1 - alpha)
control_a := p1 * 3 * (1 - alpha) * (1 - alpha) * alpha
control_b := p2 * 3 * (1 - alpha) * alpha * alpha
end_point := p3 * alpha * alpha * alpha
weight_start := (1 - alpha) * (1 - alpha) * (1 - alpha)
weight_c_a := 3 * (1 - alpha) * (1 - alpha) * alpha
weight_c_b := 3 * (1 - alpha) * alpha * alpha
weight_end := alpha * alpha * alpha
start_point := p0 * weight_start
control_a := p1 * weight_c_a
control_b := p2 * weight_c_b
end_point := p3 * weight_end
point := start_point + control_a + control_b + end_point
return point
@@ -265,26 +270,26 @@ init :: proc( ctx : ^Context, parser_kind : ParserKind,
draw_list.calls, error = make( Array(DrawCall), 512 )
assert(error == .None, "VEFontCache.init : Failed to allocate draw_list.calls")
init_atlas_region :: proc( region : ^AtlasRegion, params : InitAtlasParams, region_params : InitAtlasRegionParams, factor : Vec2i, expected_cap : u32 ) {
init_atlas_region :: proc( region : ^AtlasRegion, params : InitAtlasParams, region_params : InitAtlasRegionParams, factor : Vec2i, expected_cap : i32 ) {
using region
next_idx = 0;
width = region_params.width
height = region_params.height
size = {
params.width / factor.x,
params.height / factor.y,
i32(params.width) / factor.x,
i32(params.height) / factor.y,
}
capacity = {
size.x / width,
size.y / height,
size.x / i32(width),
size.y / i32(height),
}
assert( capacity.x * capacity.y == expected_cap )
error : AllocatorError
// state.cache, error = make( HMapChained(LRU_Link), uint(capacity.x * capacity.y) )
// assert( error == .None, "VEFontCache.init_atlas_region : Failed to allocate state.cache")
LRU_init( & state, capacity.x * capacity.y )
LRU_init( & state, u32(capacity.x * capacity.y) )
}
init_atlas_region( & atlas.region_a, atlas_params, atlas_params.region_a, { 4, 2}, 1024 )
init_atlas_region( & atlas.region_b, atlas_params, atlas_params.region_b, { 4, 2}, 512 )
@@ -300,7 +305,7 @@ init :: proc( ctx : ^Context, parser_kind : ParserKind,
atlas.region_b.offset.y = atlas.region_a.size.y
atlas.region_c.offset.x = atlas.region_a.size.x
atlas.region_c.offset.y = 0
atlas.region_d.offset.x = atlas.width / 2
atlas.region_d.offset.x = i32(atlas.width) / 2
atlas.region_d.offset.y = 0
LRU_init( & shape_cache.state, shape_cache_params.capacity )
@@ -606,7 +611,7 @@ cache_glyph_to_atlas :: proc( ctx : ^Context, font : FontID, glyph_index : Glyph
// Draw oversized glyph to update FBO
glyph_draw_scale := over_sample * entry.size_scale
glyph_draw_translate := Vec2 { f32(-bounds_0.x), f32(-bounds_0.y) } * glyph_draw_scale + Vec2{ glyph_padding, glyph_padding }
glyph_draw_translate := Vec2 { -f32(bounds_0.x), -f32(bounds_0.y) } * glyph_draw_scale + Vec2{ glyph_padding, glyph_padding }
glyph_draw_translate.x = cast(f32) (i32(glyph_draw_translate.x + 0.9999999))
glyph_draw_translate.y = cast(f32) (i32(glyph_draw_translate.y + 0.9999999))
@@ -617,7 +622,7 @@ cache_glyph_to_atlas :: proc( ctx : ^Context, font : FontID, glyph_index : Glyph
}
// Calculate the src and destination regions
dst_position, dst_width, dst_height := atlas_bbox( atlas, region_kind, u32(atlas_index) )
dst_position, dst_width, dst_height := atlas_bbox( atlas, region_kind, atlas_index )
dst_glyph_position := dst_position + { glyph_padding, glyph_padding }
dst_glyph_width := f32(bounds_width) * entry.size_scale
dst_glyph_height := f32(bounds_height) * entry.size_scale

18
code/font/VEFontCache/atlas.odin
View File

@@ -27,7 +27,7 @@ Atlas :: struct {
using glyph_update_batch : GlyphDrawBuffer,
}
atlas_bbox :: proc( atlas : ^Atlas, region : AtlasRegionKind, local_idx : u32 ) -> (position : Vec2, width, height : f32)
atlas_bbox :: proc( atlas : ^Atlas, region : AtlasRegionKind, local_idx : i32 ) -> (position : Vec2, width, height : f32)
{
switch region
{
@@ -35,8 +35,8 @@ atlas_bbox :: proc( atlas : ^Atlas, region : AtlasRegionKind, local_idx : u32 )
width = f32(atlas.region_a.width)
height = f32(atlas.region_b.height)
position.x = cast(f32) (( local_idx % atlas.region_a.capacity.x ) * atlas.region_a.width)
position.y = cast(f32) (( local_idx / atlas.region_a.capacity.x ) * atlas.region_a.height)
position.x = cast(f32) (( local_idx % atlas.region_a.capacity.x ) * i32(atlas.region_a.width))
position.y = cast(f32) (( local_idx / atlas.region_a.capacity.x ) * i32(atlas.region_a.height))
position.x += f32(atlas.region_a.offset.x)
position.y += f32(atlas.region_a.offset.y)
@@ -45,8 +45,8 @@ atlas_bbox :: proc( atlas : ^Atlas, region : AtlasRegionKind, local_idx : u32 )
width = f32(atlas.region_b.width)
height = f32(atlas.region_b.height)
position.x = cast(f32) (( local_idx % atlas.region_b.capacity.x ) * atlas.region_b.width)
position.y = cast(f32) (( local_idx / atlas.region_b.capacity.x ) * atlas.region_b.height)
position.x = cast(f32) (( local_idx % atlas.region_b.capacity.x ) * i32(atlas.region_b.width))
position.y = cast(f32) (( local_idx / atlas.region_b.capacity.x ) * i32(atlas.region_b.height))
position.x += f32(atlas.region_b.offset.x)
position.y += f32(atlas.region_b.offset.y)
@@ -55,8 +55,8 @@ atlas_bbox :: proc( atlas : ^Atlas, region : AtlasRegionKind, local_idx : u32 )
width = f32(atlas.region_c.width)
height = f32(atlas.region_c.height)
position.x = cast(f32) (( local_idx % atlas.region_c.capacity.x ) * atlas.region_c.width)
position.y = cast(f32) (( local_idx / atlas.region_c.capacity.x ) * atlas.region_c.height)
position.x = cast(f32) (( local_idx % atlas.region_c.capacity.x ) * i32(atlas.region_c.width))
position.y = cast(f32) (( local_idx / atlas.region_c.capacity.x ) * i32(atlas.region_c.height))
position.x += f32(atlas.region_c.offset.x)
position.y += f32(atlas.region_c.offset.y)
@@ -65,8 +65,8 @@ atlas_bbox :: proc( atlas : ^Atlas, region : AtlasRegionKind, local_idx : u32 )
width = f32(atlas.region_d.width)
height = f32(atlas.region_d.height)
position.x = cast(f32) (( local_idx % atlas.region_d.capacity.x ) * atlas.region_d.width)
position.y = cast(f32) (( local_idx / atlas.region_d.capacity.x ) * atlas.region_d.height)
position.x = cast(f32) (( local_idx % atlas.region_d.capacity.x ) * i32(atlas.region_d.width))
position.y = cast(f32) (( local_idx / atlas.region_d.capacity.x ) * i32(atlas.region_d.height))
position.x += f32(atlas.region_d.offset.x)
position.y += f32(atlas.region_d.offset.y)

6
code/font/VEFontCache/draw.odin
View File

@@ -93,13 +93,13 @@ clear_draw_list :: proc( draw_list : ^DrawList ) {
clear( draw_list.vertices )
}
directly_draw_massive_glyph :: proc( ctx : ^Context, entry : ^Entry, glyph : Glyph, bounds_0 : Vec2i, bounds_width, bounds_height : u32, over_sample, position, scale : Vec2 )
directly_draw_massive_glyph :: proc( ctx : ^Context, entry : ^Entry, glyph : Glyph, bounds_0 : Vec2i, bounds_width, bounds_height : i32, over_sample, position, scale : Vec2 )
{
flush_glyph_buffer_to_atlas( ctx )
// Draw un-antialiased glyph to update FBO.
glyph_draw_scale := over_sample * entry.size_scale
glyph_draw_translate := Vec2{ f32(-bounds_0.x), f32(-bounds_0.y)} * glyph_draw_scale + Vec2{ f32(ctx.atlas.glyph_padding), f32(ctx.atlas.glyph_padding) }
glyph_draw_translate := Vec2{ -f32(bounds_0.x), -f32(bounds_0.y)} * glyph_draw_scale + Vec2{ f32(ctx.atlas.glyph_padding), f32(ctx.atlas.glyph_padding) }
screenspace_x_form( & glyph_draw_translate, & glyph_draw_scale, f32(ctx.atlas.buffer_width), f32(ctx.atlas.buffer_height) )
cache_glyph( ctx, entry.id, glyph, glyph_draw_scale, glyph_draw_translate )
@@ -182,7 +182,7 @@ draw_cached_glyph :: proc( ctx : ^Context, entry : ^Entry, glyph_index : Glyph,
atlas := & ctx.atlas
// Figure out the source bounding box in the atlas texture
atlas_position, atlas_width, atlas_height := atlas_bbox( atlas, region_kind, u32(atlas_index) )
atlas_position, atlas_width, atlas_height := atlas_bbox( atlas, region_kind, atlas_index )
glyph_position := atlas_position
glyph_width := f32(bounds_width) * entry.size_scale

8
code/font/VEFontCache/parser.odin
View File

@@ -203,16 +203,16 @@ parser_get_glyph_box :: proc( font : ^ParserFontInfo, glyph_index : Glyph ) -> (
metrics := font.freetype_info.glyph.metrics
bounds_0 = {u32(metrics.hori_bearing_x), u32(metrics.hori_bearing_y - metrics.height)}
bounds_1 = {u32(metrics.hori_bearing_x + metrics.width), u32(metrics.hori_bearing_y)}
bounds_0 = {i32(metrics.hori_bearing_x), i32(metrics.hori_bearing_y - metrics.height)}
bounds_1 = {i32(metrics.hori_bearing_x + metrics.width), i32(metrics.hori_bearing_y)}
case .STB_TrueType:
x0, y0, x1, y1 : i32
success := cast(bool) stbtt.GetGlyphBox( & font.stbtt_info, i32(glyph_index), & x0, & y0, & x1, & y1 )
assert( success )
bounds_0 = { u32(x0), u32(y0) }
bounds_1 = { u32(x1), u32(y1) }
bounds_0 = { i32(x0), i32(y0) }
bounds_1 = { i32(x1), i32(y1) }
}
return
}