This commit is contained in:
Matthew 2025-12-26 17:19:23 +11:00
parent 5b6a36f845
commit 4c84d0ca40

38
fonts.d
View File

@ -32,7 +32,7 @@ struct Glyph
} }
__gshared FT_Library FT_LIB; __gshared FT_Library FT_LIB;
alias FontFace = FT_Face; alias FontFace = FT_Face;
struct FontAtlasBuf struct FontAtlasBuf
{ {
@ -108,10 +108,7 @@ CreateAtlas(Arena* arena, FontFace font, f32 size, u32 dimension)
Logf("%f %f %f", font.height, font.ascender, font.descender); Logf("%f %f %f", font.height, font.ascender, font.descender);
u32 max_w; u32 max_w, max_h, current_h, count;
u32 max_h;
u32 current_h;
u32 count;
i32 font_size = Float26(size); i32 font_size = Float26(size);
@ -134,17 +131,17 @@ CreateAtlas(Arena* arena, FontFace font, f32 size, u32 dimension)
assert(max_h < dimension, "Unable to pack atlas within dimensions"); assert(max_h < dimension, "Unable to pack atlas within dimensions");
max_w += bmp_w; max_w += bmp_w;
current_h = bmp_h > current_h ? bmp_h : current_h; current_h = bmp_h > current_h ? bmp_h : current_h;
count += 1; count += 1;
} }
const u32 PADDING = 2; const u32 PADDING = 2;
max_w = PADDING; max_w = PADDING;
max_h = PADDING; max_h = PADDING;
current_h = 0; current_h = 0;
count = 0; count = 0;
foreach(FT_ULong char_code; 0 .. 0x7F) foreach(FT_ULong char_code; 0 .. 0x7F)
{ {
@ -182,10 +179,7 @@ CreateAtlas(Arena* arena, FontFace font, f32 size, u32 dimension)
u8 p_r = bmp.buffer[offset+2]; u8 p_r = bmp.buffer[offset+2];
u8 p_a = bmp.buffer[offset+3]; u8 p_a = bmp.buffer[offset+3];
abuf.data[offset+0] = DeMultiply(p_r, p_a); abuf.data[offset .. offset+4] = [DeMultiply(p_r, p_a), DeMultiply(p_b, p_a), DeMultiply(p_g, p_a), p_a];
abuf.data[offset+1] = DeMultiply(p_b, p_a);
abuf.data[offset+2] = DeMultiply(p_g, p_a);
abuf.data[offset+3] = p_a;
} }
} }
} break; } break;
@ -210,11 +204,7 @@ CreateAtlas(Arena* arena, FontFace font, f32 size, u32 dimension)
x = max_w + c; x = max_w + c;
u64 offset = (y*dimension + x) * 4; u64 offset = (y*dimension + x) * 4;
abuf.data[offset+0] = 255; abuf.data[offset .. offset+4] = [255, 255, 255, bits & 0x80 ? 255 : 0];
abuf.data[offset+1] = 255;
abuf.data[offset+2] = 255;
abuf.data[offset+3] = (bits & 0x80) ? 255 : 0;
bits <<= 1; bits <<= 1;
} }
@ -232,10 +222,7 @@ CreateAtlas(Arena* arena, FontFace font, f32 size, u32 dimension)
x = max_w + c; x = max_w + c;
u64 offset = (y*dimension + x) * 4; u64 offset = (y*dimension + x) * 4;
abuf.data[offset+0] = 255; abuf.data[offset .. offset+4] = [255, 255, 255, bmp.buffer[r*bmp.pitch + c]];
abuf.data[offset+1] = 255;
abuf.data[offset+2] = 255;
abuf.data[offset+3] = bmp.buffer[r*bmp.pitch + c];
} }
} }
} break; } break;
@ -273,3 +260,8 @@ CreateAtlas(Arena* arena, FontFace font, f32 size, u32 dimension)
return abuf; return abuf;
} }
unittest
{
}