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| Rev 2455 | Rev 2464 | ||
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| Line 67... | Line 67... | ||
| 67 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
67 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| Line 68... | Line 68... | ||
| 68 | 68 | ||
| 69 | include 'macros.inc' |
69 | include 'macros.inc' |
| Line 70... | Line 70... | ||
| 70 | include 'struct.inc' |
70 | include 'struct.inc' |
| Line 71... | Line 71... | ||
| 71 | 71 | ||
| Line 72... | Line 72... | ||
| 72 | $Revision: 2455 $ |
72 | $Revision: 2464 $ |
| Line 2442... | Line 2442... | ||
| 2442 | mov [BgrDataHeight], eax |
2442 | mov [BgrDataHeight], eax |
| 2443 | @@: |
2443 | @@: |
| 2444 | mov eax, [BgrDataWidth] |
2444 | mov eax, [BgrDataWidth] |
| 2445 | imul eax, [BgrDataHeight] |
2445 | imul eax, [BgrDataHeight] |
| 2446 | lea eax, [eax*3] |
2446 | lea eax, [eax*3] |
| - | 2447 | ; it is reserved with aligned to the boundary of 4 KB pages, |
|
| - | 2448 | ; otherwise there may be exceptions a page fault for vesa20_drawbackground_tiled |
|
| - | 2449 | ; because the 32 bit read is used for high performance: "mov eax,[esi]" |
|
| - | 2450 | shr eax, 12 |
|
| - | 2451 | inc eax |
|
| - | 2452 | shl eax, 12 |
|
| 2447 | mov [mem_BACKGROUND], eax |
2453 | mov [mem_BACKGROUND], eax |
| 2448 | ; get memory for new background |
2454 | ; get memory for new background |
| 2449 | stdcall kernel_alloc, eax |
2455 | stdcall kernel_alloc, eax |
| 2450 | test eax, eax |
2456 | test eax, eax |
| 2451 | jz .memfailed |
2457 | jz .memfailed |