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feat: add APIs to draw text to a framebuffer
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@kkebo
kkebo committed Nov 30, 2024
1 parent e60cff9 commit 9f52532
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2 changes: 2 additions & 0 deletions Package.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -20,13 +20,15 @@ let package = Package(
name: "Kernel",
dependencies: [
"MailboxMessage",
"Font",
"Support",
],
swiftSettings: swiftSettings + [
.define("RASPI4")
],
),
.target(name: "MailboxMessage"),
.target(name: "Font"),
.target(name: "Support"),
],
swiftLanguageModes: [.v6],
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1 change: 1 addition & 0 deletions Sources/Font/font.c
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@@ -0,0 +1 @@
#include "font.h"
234 changes: 234 additions & 0 deletions Sources/Font/include/font.h
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@@ -0,0 +1,234 @@
enum {
FONT_WIDTH = 8,
FONT_HEIGHT = 8,
FONT_BPG = 8, // Bytes per glyph
FONT_BPL = 1, // Bytes per line
FONT_NUMGLYPHS = 224
};

const unsigned char font[FONT_NUMGLYPHS][FONT_BPG] = {
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0000 (nul)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0001
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0002
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0003
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0004
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0005
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0006
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0007
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0008
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0009
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000A
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000B
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000C
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000D
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000E
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+000F
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0010
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0011
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0012
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0013
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0014
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0015
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0016
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0017
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0018
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0019
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001A
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001B
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001C
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001D
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001E
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+001F
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0020 (space)
{ 0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00}, // U+0021 (!)
{ 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0022 (")
{ 0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00}, // U+0023 (#)
{ 0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00}, // U+0024 ($)
{ 0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00}, // U+0025 (%)
{ 0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00}, // U+0026 (&)
{ 0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0027 (')
{ 0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00}, // U+0028 (()
{ 0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00}, // U+0029 ())
{ 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00}, // U+002A (*)
{ 0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00}, // U+002B (+)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+002C (,)
{ 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00}, // U+002D (-)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+002E (.)
{ 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00}, // U+002F (/)
{ 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00}, // U+0030 (0)
{ 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00}, // U+0031 (1)
{ 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00}, // U+0032 (2)
{ 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00}, // U+0033 (3)
{ 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00}, // U+0034 (4)
{ 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00}, // U+0035 (5)
{ 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00}, // U+0036 (6)
{ 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00}, // U+0037 (7)
{ 0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+0038 (8)
{ 0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00}, // U+0039 (9)
{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+003A (:)
{ 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+003B (;)
{ 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00}, // U+003C (<)
{ 0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00}, // U+003D (=)
{ 0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00}, // U+003E (>)
{ 0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00}, // U+003F (?)
{ 0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00}, // U+0040 (@)
{ 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}, // U+0041 (A)
{ 0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00}, // U+0042 (B)
{ 0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00}, // U+0043 (C)
{ 0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00}, // U+0044 (D)
{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00}, // U+0045 (E)
{ 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00}, // U+0046 (F)
{ 0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00}, // U+0047 (G)
{ 0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00}, // U+0048 (H)
{ 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0049 (I)
{ 0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00}, // U+004A (J)
{ 0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00}, // U+004B (K)
{ 0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00}, // U+004C (L)
{ 0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00}, // U+004D (M)
{ 0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00}, // U+004E (N)
{ 0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00}, // U+004F (O)
{ 0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00}, // U+0050 (P)
{ 0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00}, // U+0051 (Q)
{ 0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00}, // U+0052 (R)
{ 0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00}, // U+0053 (S)
{ 0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0054 (T)
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00}, // U+0055 (U)
{ 0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0056 (V)
{ 0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00}, // U+0057 (W)
{ 0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00}, // U+0058 (X)
{ 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00}, // U+0059 (Y)
{ 0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00}, // U+005A (Z)
{ 0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00}, // U+005B ([)
{ 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00}, // U+005C (\)
{ 0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00}, // U+005D (])
{ 0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00}, // U+005E (^)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF}, // U+005F (_)
{ 0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0060 (`)
{ 0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00}, // U+0061 (a)
{ 0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00}, // U+0062 (b)
{ 0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00}, // U+0063 (c)
{ 0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00}, // U+0064 (d)
{ 0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00}, // U+0065 (e)
{ 0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00}, // U+0066 (f)
{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0067 (g)
{ 0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00}, // U+0068 (h)
{ 0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0069 (i)
{ 0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E}, // U+006A (j)
{ 0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00}, // U+006B (k)
{ 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+006C (l)
{ 0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00}, // U+006D (m)
{ 0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00}, // U+006E (n)
{ 0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00}, // U+006F (o)
{ 0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F}, // U+0070 (p)
{ 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78}, // U+0071 (q)
{ 0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00}, // U+0072 (r)
{ 0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00}, // U+0073 (s)
{ 0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00}, // U+0074 (t)
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00}, // U+0075 (u)
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0076 (v)
{ 0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00}, // U+0077 (w)
{ 0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00}, // U+0078 (x)
{ 0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0079 (y)
{ 0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00}, // U+007A (z)
{ 0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00}, // U+007B ({)
{ 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00}, // U+007C (|)
{ 0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00}, // U+007D (})
{ 0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007E (~)
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007F
{ 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x18, 0x30, 0x1E}, // U+00C7 (C cedille)
{ 0x00, 0x33, 0x00, 0x33, 0x33, 0x33, 0x7E, 0x00}, // U+00FC (u umlaut)
{ 0x38, 0x00, 0x1E, 0x33, 0x3F, 0x03, 0x1E, 0x00}, // U+00E9 (e aigu)
{ 0x7E, 0xC3, 0x3C, 0x60, 0x7C, 0x66, 0xFC, 0x00}, // U+00E2 (a circumflex)
{ 0x33, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x7E, 0x00}, // U+00E4 (a umlaut)
{ 0x07, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x7E, 0x00}, // U+00E0 (a grave)
{ 0x0C, 0x0C, 0x1E, 0x30, 0x3E, 0x33, 0x7E, 0x00}, // U+00E5 (a ring)
{ 0x00, 0x00, 0x1E, 0x03, 0x03, 0x1E, 0x30, 0x1C}, // U+00E7 (c cedille)
{ 0x7E, 0xC3, 0x3C, 0x66, 0x7E, 0x06, 0x3C, 0x00}, // U+00EA (e circumflex)
{ 0x33, 0x00, 0x1E, 0x33, 0x3F, 0x03, 0x1E, 0x00}, // U+00EB (e umlaut)
{ 0x07, 0x00, 0x1E, 0x33, 0x3F, 0x03, 0x1E, 0x00}, // U+00E8 (e grave)
{ 0x33, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+00EF (i umlaut)
{ 0x3E, 0x63, 0x1C, 0x18, 0x18, 0x18, 0x3C, 0x00}, // U+00EE (i circumflex)
{ 0x07, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+00EC (i grave)
{ 0x63, 0x1C, 0x36, 0x63, 0x7F, 0x63, 0x63, 0x00}, // U+00C4 (A umlaut)
{ 0x0C, 0x0C, 0x00, 0x1E, 0x33, 0x3F, 0x33, 0x00}, // U+00C5 (A ring)
{ 0x07, 0x00, 0x3F, 0x06, 0x1E, 0x06, 0x3F, 0x00}, // U+00C8 (E grave)
{ 0x00, 0x00, 0xFE, 0x30, 0xFE, 0x33, 0xFE, 0x00}, // U+00E6 (ae)
{ 0x7C, 0x36, 0x33, 0x7F, 0x33, 0x33, 0x73, 0x00}, // U+00C6 (AE)
{ 0x1E, 0x33, 0x00, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+00F4 (o circumflex)
{ 0x00, 0x33, 0x00, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+00F6 (o umlaut)
{ 0x00, 0x07, 0x00, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+00F2 (o grave)
{ 0x1E, 0x33, 0x00, 0x33, 0x33, 0x33, 0x7E, 0x00}, // U+00FB (u circumflex)
{ 0x00, 0x07, 0x00, 0x33, 0x33, 0x33, 0x7E, 0x00}, // U+00F9 (u grave)
{ 0x00, 0x33, 0x00, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+00FF (y umlaut)
{ 0xC3, 0x18, 0x3C, 0x66, 0x66, 0x3C, 0x18, 0x00}, // U+00D6 (O umlaut)
{ 0x33, 0x00, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x00}, // U+00DC (U umlaut)
{ 0x18, 0x18, 0x7E, 0x03, 0x03, 0x7E, 0x18, 0x18}, // U+00A2 (dollarcents)
{ 0x1C, 0x36, 0x26, 0x0F, 0x06, 0x67, 0x3F, 0x00}, // U+00A3 (pound sterling)
{ 0x33, 0x33, 0x1E, 0x3F, 0x0C, 0x3F, 0x0C, 0x0C}, // U+00A5 (yen)
{ 0x7C, 0xC6, 0x1C, 0x36, 0x36, 0x1C, 0x33, 0x1E}, // U+00A7 (paragraph)
{ 0x70, 0xD8, 0x18, 0x3C, 0x18, 0x18, 0x1B, 0x0E}, // U+0192 (dutch florijn)
{ 0x38, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x7E, 0x00}, // U+00E1 (a aigu)
{ 0x1C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+00ED (i augu)
{ 0x00, 0x38, 0x00, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+00F3 (o aigu)
{ 0x00, 0x38, 0x00, 0x33, 0x33, 0x33, 0x7E, 0x00}, // U+00FA (u aigu)
{ 0x00, 0x1F, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x00}, // U+00F1 (n ~)
{ 0x3F, 0x00, 0x33, 0x37, 0x3F, 0x3B, 0x33, 0x00}, // U+00D1 (N ~)
{ 0x3C, 0x36, 0x36, 0x7C, 0x00, 0x00, 0x00, 0x00}, // U+00AA (superscript a)
{ 0x1C, 0x36, 0x36, 0x1C, 0x00, 0x00, 0x00, 0x00}, // U+00BA (superscript 0)
{ 0x0C, 0x00, 0x0C, 0x06, 0x03, 0x33, 0x1E, 0x00}, // U+00BF (inverted ?)
{ 0x00, 0x00, 0x00, 0x3F, 0x03, 0x03, 0x00, 0x00}, // U+2310 (gun pointing right)
{ 0x00, 0x00, 0x00, 0x3F, 0x30, 0x30, 0x00, 0x00}, // U+00AC (gun pointing left)
{ 0xC3, 0x63, 0x33, 0x7B, 0xCC, 0x66, 0x33, 0xF0}, // U+00BD (1/2)
{ 0xC3, 0x63, 0x33, 0xBD, 0xEC, 0xF6, 0xF3, 0x03}, // U+00BC (1/4)
{ 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x18, 0x00}, // U+00A1 (inverted !)
{ 0x00, 0xCC, 0x66, 0x33, 0x66, 0xCC, 0x00, 0x00}, // U+00AB (<<)
{ 0x00, 0x33, 0x66, 0xCC, 0x66, 0x33, 0x00, 0x00}, // U+00BB (>>)
{ 0x55, 0x00, 0xAA, 0x00, 0x55, 0x00, 0xAA, 0x00}, // U+2591 (25% solid)
{ 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA}, // U+2592 (50% solid)
{ 0xFF, 0xAA, 0xFF, 0x55, 0xFF, 0xAA, 0xFF, 0x55}, // U+2593 (75% solid)
{ 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08}, // U+2502 (thin vertical)
{ 0x08, 0x08, 0x08, 0x08, 0x0f, 0x08, 0x08, 0x08}, // U+2524 (down L, left L, up L)
{ 0x08, 0x08, 0x08, 0x0F, 0x08, 0x0F, 0x08, 0x08}, // U+2561 (up L, down L, left D)
{ 0x14, 0x14, 0x14, 0x14, 0x17, 0x14, 0x14, 0x14}, // U+2562 (up D, down D, left L)
{ 0x00, 0x00, 0x00, 0x00, 0x1F, 0x14, 0x14, 0x14}, // U+2556 (down D, left L)
{ 0x00, 0x00, 0x00, 0x0F, 0x08, 0x0F, 0x08, 0x08}, // U+2555 (down L, left D)
{ 0x14, 0x14, 0x14, 0x17, 0x10, 0x17, 0x14, 0x14}, // U+2563 (up D, down D, left D)
{ 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14}, // U+2551 (double vertical)
{ 0x00, 0x00, 0x00, 0x1F, 0x10, 0x17, 0x14, 0x14}, // U+2557 (down D, left D)
{ 0x14, 0x14, 0x14, 0x17, 0x10, 0x1F, 0x00, 0x00}, // U+255D (up D, left D)
{ 0x14, 0x14, 0x14, 0x14, 0x1F, 0x00, 0x00, 0x00}, // U+255C (up D, left L)
{ 0x08, 0x08, 0x08, 0x0F, 0x08, 0x0F, 0x00, 0x00}, // U+255B (up L, left D)
{ 0x00, 0x00, 0x00, 0x00, 0x0f, 0x08, 0x08, 0x08}, // U+2510 (down L, left L)
{ 0x08, 0x08, 0x08, 0x08, 0xf8, 0x00, 0x00, 0x00}, // U+2514 (up L, right L)
{ 0x08, 0x08, 0x08, 0x08, 0xff, 0x00, 0x00, 0x00}, // U+2534 (up L, right L, left L)
{ 0x00, 0x00, 0x00, 0x00, 0xff, 0x08, 0x08, 0x08}, // U+252C (down L, right L, left L)
{ 0x08, 0x08, 0x08, 0x08, 0xf8, 0x08, 0x08, 0x08}, // U+251C (down L, right L, up L)
{ 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00}, // U+2500 (thin horizontal)
{ 0x08, 0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08}, // U+253C (up L, right L, left L, down L)
{ 0x08, 0x08, 0x08, 0xF8, 0x08, 0xF8, 0x08, 0x08}, // U+255E (up L, down L, right D)
{ 0x14, 0x14, 0x14, 0x14, 0xF4, 0x14, 0x14, 0x14}, // U+255F (up D, down D, right L)
{ 0x14, 0x14, 0x14, 0xF4, 0x04, 0xFC, 0x00, 0x00}, // U+255A (up D, right D)
{ 0x00, 0x00, 0x00, 0xFC, 0x04, 0xF4, 0x14, 0x14}, // U+2554 (down D, right D)
{ 0x14, 0x14, 0x14, 0xF7, 0x00, 0xFF, 0x00, 0x00}, // U+2569 (left D, right D, up D)
{ 0x00, 0x00, 0x00, 0xFF, 0x00, 0xF7, 0x14, 0x14}, // U+2566 (left D, right D, down D)
{ 0x14, 0x14, 0x14, 0xF4, 0x04, 0xF4, 0x14, 0x14}, // U+2560 (up D, down D, right D)
{ 0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00}, // U+2550 (double horizontal)
{ 0x14, 0x14, 0x14, 0xF7, 0x00, 0xF7, 0x14, 0x14}, // U+256C (left D, right D, down D, up D)
{ 0x08, 0x08, 0x08, 0xFF, 0x00, 0xFF, 0x00, 0x00}, // U+2567 (left D, right D, up L)
{ 0x14, 0x14, 0x14, 0x14, 0xFF, 0x00, 0x00, 0x00}, // U+2568 (left L, right L, up D)
{ 0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x08, 0x08}, // U+2564 (left D, right D, down L)
{ 0x00, 0x00, 0x00, 0x00, 0xFF, 0x14, 0x14, 0x14}, // U+2565 (left L, right L, down D)
{ 0x14, 0x14, 0x14, 0x14, 0xFC, 0x00, 0x00, 0x00}, // U+2559 (up D, right L)
{ 0x08, 0x08, 0x08, 0xF8, 0x08, 0xF8, 0x00, 0x00}, // U+2558 (up L, right D)
{ 0x00, 0x00, 0x00, 0xF8, 0x08, 0xF8, 0x08, 0x08}, // U+2552 (down L, right D)
{ 0x00, 0x00, 0x00, 0x00, 0xFC, 0x14, 0x14, 0x14}, // U+2553 (down D, right L)
{ 0x14, 0x14, 0x14, 0x14, 0xFF, 0x14, 0x14, 0x14}, // U+256B (left L, right L, down D, up D)
{ 0x08, 0x08, 0x08, 0xFF, 0x08, 0xFF, 0x08, 0x08}, // U+256A (left D, right D, down L, up L)
{ 0x08, 0x08, 0x08, 0x08, 0x0f, 0x00, 0x00, 0x00}, // U+2518 (up L, left L)
{ 0x00, 0x00, 0x00, 0x00, 0xf8, 0x08, 0x08, 0x08}, // U+250C (down L, right L)
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, // U+2588 (solid)
{ 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF}, // U+2584 (bottom half)
{ 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F}, // U+258C (left half)
{ 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0}, // U+2590 (right half)
{ 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00}, // U+2580 (top half)
};
37 changes: 37 additions & 0 deletions Sources/Kernel/Framebuffer.swift
View file
Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
import Font

import var MailboxMessage.mbox

enum PixelOrder: UInt32 {
Expand Down Expand Up @@ -106,4 +108,39 @@ struct Framebuffer: ~Copyable {
}
}
}

func drawChar(_ c: UInt8, x: Int, y: Int, color: UInt32) {
guard c < FONT_NUMGLYPHS else { fatalError() }
withUnsafeBytes(of: font) { ptr in
var offset = Int(c) * FONT_BPG
for i in 0..<FONT_HEIGHT {
for j in 0..<FONT_WIDTH {
let mask: UInt8 = 1 << j
if ptr[offset] & mask != 0 {
self.drawPoint(x: x + j, y: y + i, color: color)
}
}
offset += FONT_BPL
}
}
}

func drawString(_ s: StaticString, x: Int, y: Int, color: UInt32) {
var p = s.utf8Start
var x = x
var y = y
repeat {
switch p.pointee {
case 0: break
case 0x0d: x = 0
case 0x0a:
x = 0
y += FONT_HEIGHT
case let c:
self.drawChar(c, x: x, y: y, color: color)
p += 1
x += FONT_WIDTH
}
} while true
}
}
1 change: 1 addition & 0 deletions Sources/Kernel/kmain.swift
View file
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ public func kmain() {

let fb = Framebuffer(width: 1920, height: 1080, depth: 32, pixelOrder: .rgb)
fb.fillRect(x0: 0, y0: 0, x1: 100, y1: 100, color: 0xffffff)
fb.drawString("Hello Swift!", x: 0, y: 100, color: 0xffffff)

repeat { putchar(getchar()) } while true
}

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