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Kartik K. Agaram 2021-06-15 08:59:36 -07:00
parent f99cd767a4
commit b9fea69687
1 changed files with 4 additions and 3 deletions
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7
103grapheme.subx
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@ -19,7 +19,7 @@ draw-grapheme-on-real-screen: # g: grapheme, x: int, y: int, color: int, backgr
55/push-ebp
89/<- %ebp 4/r32/esp
#
(draw-grapheme-on-screen-buffer *Video-memory-addr *(ebp+8) *(ebp+0xc) *(ebp+0x10) *(ebp+0x14) *(ebp+0x18) 0x400 0x300)
(draw-grapheme-on-screen-buffer *Video-memory-addr *(ebp+8) *(ebp+0xc) *(ebp+0x10) *(ebp+0x14) *(ebp+0x18) 0x80 0x30)
$draw-grapheme-on-real-screen:end:
# . epilogue
89/<- %esp 5/r32/ebp
@ -27,8 +27,6 @@ $draw-grapheme-on-real-screen:end:
c3/return
# 'buffer' here is not a valid Mu type: a naked address without a length.
# 'x' and 'y' are in graphemes
# 'screen-width' and 'screen-height' are in pixels
draw-grapheme-on-screen-buffer: # buffer: (addr byte), g: grapheme, x: int, y: int, color: int, background-color: int, screen-width: int, screen-height: int
# . prologue
55/push-ebp
@ -39,6 +37,9 @@ draw-grapheme-on-screen-buffer: # buffer: (addr byte), g: grapheme, x: int, y:
52/push-edx
53/push-ebx
56/push-esi
# switch screen-width and screen-height from grapheme to pixel units
c1 4/subop/shift-left *(ebp+20) 3/imm8/log2-font-width
c1 4/subop/shift-left *(ebp+24) 4/imm8/log2-font-height
# esi = g
8b/-> *(ebp+0xc) 6/r32/esi
# if (g >= 128) return # characters beyond ASCII currently not supported