diff options
Diffstat (limited to '103grapheme.subx')
| -rw-r--r-- | 103grapheme.subx | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/103grapheme.subx b/103grapheme.subx index ef7cf538..2ed65643 100644 --- a/103grapheme.subx +++ b/103grapheme.subx @@ -134,8 +134,6 @@ draw-narrow-grapheme-on-screen-buffer: # buffer: (addr byte), letter-bitmap: (a 55/push-ebp 89/<- %ebp 4/r32/esp # . save registers - 50/push-eax - 51/push-ecx 52/push-edx 53/push-ebx 56/push-esi @@ -170,8 +168,6 @@ $draw-narrow-grapheme-on-screen-buffer:end: 5e/pop-to-esi 5b/pop-to-ebx 5a/pop-to-edx - 59/pop-to-ecx - 58/pop-to-eax # . epilogue 89/<- %esp 5/r32/ebp 5d/pop-to-ebp @@ -189,9 +185,42 @@ draw-wide-grapheme-on-screen-buffer: # buffer: (addr byte), letter-bitmap: (add 52/push-edx 53/push-ebx 56/push-esi - # HERE + 57/push-edi + # esi = letter-bitmap + 8b/-> *(ebp+0xc) 6/r32/esi + # + bb/copy-to-ebx 0/imm32 + # var ycurr/edx: int = y*16 + 8b/-> *(ebp+0x14) 2/r32/edx + c1 4/subop/shift-left %edx 4/imm8 + # var ymax/edi: int = ycurr + 16 + 8b/-> *(ebp+0x14) 7/r32/edi + c1 4/subop/shift-left %edi 4/imm8 + 81 0/subop/add %edi 0x10/imm32 + { + # if (ycurr >= ymax) break + 39/compare %edx 7/r32/edi + 0f 8d/jump-if->= break/disp32 + # var row-bitmap/ebx: byte = *letter-bitmap + 8a/byte-> *(esi+1) 3/r32/BL + # ecx = x + 8b/-> *(ebp+0x10) 1/r32/ecx + # first half-row + (draw-run-of-pixels-from-glyph *(ebp+8) %ebx %ecx %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24)) + # second half-row + 8a/byte-> *esi 3/r32/BL + 49/increment-ecx + (draw-run-of-pixels-from-glyph *(ebp+8) %ebx %ecx %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24)) + # ++y + 42/increment-edx + # next bitmap row + 81 0/subop/add %esi 2/imm32 + # + e9/jump loop/disp32 + } $draw-wide-grapheme-on-screen-buffer:end: # . restore registers + 5f/pop-to-edi 5e/pop-to-esi 5b/pop-to-ebx 5a/pop-to-edx |