WGPU is coming

scripts/gen_font.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+"""Bake an 8x16 1-bpp bitmap font (ASCII 32..127) from DejaVu Sans Mono 13px.
+
+Output: Go source file with the atlas. One byte per glyph row, bit n = pixel
+at column n (LSB = leftmost), matching the kernel's (row >> col) & 1 lookup.
+"""
+from PIL import Image, ImageDraw, ImageFont
+
+FONT = "/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf"
+SIZE = 13
+BASELINE = 12   # baseline row inside the 16px cell
+THRESH = 110
+
+font = ImageFont.truetype(FONT, SIZE)
+atlas = []
+for c in range(32, 128):
+    img = Image.new("L", (8, 16), 0)
+    d = ImageDraw.Draw(img)
+    d.text((0, BASELINE), chr(c), font=font, fill=255, anchor="ls")
+    px = img.load()
+    for y in range(16):
+        b = 0
+        for x in range(8):
+            if px[x, y] >= THRESH:
+                b |= 1 << x
+        atlas.append(b)
+
+def art(c):
+    print(f"--- '{chr(c)}' ---")
+    for y in range(16):
+        row = atlas[(c - 32) * 16 + y]
+        print("".join("#" if (row >> x) & 1 else "." for x in range(8)))
+
+for c in "AgM%m0(":
+    art(ord(c))
+
+lines = []
+for i in range(0, len(atlas), 16):
+    chunk = ", ".join(f"0x{b:02X}" for b in atlas[i:i+16])
+    lines.append(f"\t{chunk},")
+body = "\n".join(lines)
+
+src = f'''package generator
+
+// 8x16 1-bpp bitmap font baked from DejaVu Sans Mono {SIZE}px (public-domain
+// style console glyphs). ASCII 32..127, one byte per row, LSB = leftmost pixel.
+var fontAtlas8x16 = [96 * 16]byte{{
+{body}
+}}
+'''
+with open("internal/generator/font.go", "w") as f:
+    f.write(src)
+print("wrote internal/generator/font.go,", len(atlas), "bytes of glyph data")