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[BLUE] Optimize ScrIoControl for speed (#5185)

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Optimize IOCTL_CONSOLE_FILL_OUTPUT_ATTRIBUTE and IOCTL_CONSOLE_FILL_OUTPUT_CHARACTER for speed by using cache. CORE-18838
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Katayama Hirofumi MZ 2023-03-28 08:12:38 +09:00 committed by GitHub
parent 6084da8c84
commit 3526ffc094
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 2 deletions
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8
drivers/setup/blue/blue.c
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@ -1073,6 +1073,8 @@ ScrIoControl(
if (DeviceExtension->Enabled && DeviceExtension->VideoMemory) if (DeviceExtension->Enabled && DeviceExtension->VideoMemory)
{ {
UCHAR attr = Buf->wAttribute;
vidmem = DeviceExtension->VideoMemory; vidmem = DeviceExtension->VideoMemory;
offset = (Buf->dwCoord.X + Buf->dwCoord.Y * DeviceExtension->Columns) * 2 + 1; offset = (Buf->dwCoord.X + Buf->dwCoord.Y * DeviceExtension->Columns) * 2 + 1;
@ -1082,7 +1084,7 @@ ScrIoControl(
for (dwCount = 0; dwCount < nMaxLength; dwCount++) for (dwCount = 0; dwCount < nMaxLength; dwCount++)
{ {
vidmem[offset + (dwCount * 2)] = (char)Buf->wAttribute; vidmem[offset + (dwCount * 2)] = attr;
} }
Buf->dwTransfered = dwCount; Buf->dwTransfered = dwCount;
} }
@ -1271,6 +1273,8 @@ ScrIoControl(
if (DeviceExtension->Enabled && DeviceExtension->VideoMemory) if (DeviceExtension->Enabled && DeviceExtension->VideoMemory)
{ {
UCHAR ch = Buf->cCharacter;
vidmem = DeviceExtension->VideoMemory; vidmem = DeviceExtension->VideoMemory;
offset = (Buf->dwCoord.X + Buf->dwCoord.Y * DeviceExtension->Columns) * 2; offset = (Buf->dwCoord.X + Buf->dwCoord.Y * DeviceExtension->Columns) * 2;
@ -1280,7 +1284,7 @@ ScrIoControl(
for (dwCount = 0; dwCount < nMaxLength; dwCount++) for (dwCount = 0; dwCount < nMaxLength; dwCount++)
{ {
vidmem[offset + (dwCount * 2)] = (char)Buf->cCharacter; vidmem[offset + (dwCount * 2)] = ch;
} }
Buf->dwTransfered = dwCount; Buf->dwTransfered = dwCount;
} }