perikiyoxd/exectos
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원본 프로젝트 : xt-sys/exectos
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Optimize HlClearScreen() routine

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This commit is contained in:
Rafal Kupiec
2024-03-09 15:50:05 +01:00
부모 a4c22ab5e8
커밋 a4d9e6dd8e
1개의 변경된 파일과 10개의 추가작업 그리고 5개의 파일을 삭제
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15
xtoskrnl/hl/efifb.c
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@@ -20,14 +20,19 @@ XTAPI
VOID VOID
HlClearScreen(VOID) HlClearScreen(VOID)
{ {
SIZE_T PositionX, PositionY; SIZE_T Line, PositionX, PositionY;
PULONG FrameBuf;
/* Get pointer to frame buffer */
FrameBuf = HlpFrameBufferData.Address;
/* Fill the screen with a black box */ /* Fill the screen with a black box */
for(PositionX = 0; PositionX < HlpFrameBufferData.Width; PositionX++) for(PositionY = 0; PositionY < HlpFrameBufferData.Height; PositionY++)
{ {
for(PositionY = 0; PositionY < HlpFrameBufferData.Height; PositionY++) Line = PositionY * HlpFrameBufferData.PixelsPerScanLine;
for(PositionX = 0; PositionX < HlpFrameBufferData.Width; PositionX++)
{ {
HlDrawPixel(PositionX, PositionY, 0x00000000); FrameBuf[Line + PositionX] = 0x00000000;
} }
} }
} }
@@ -74,7 +79,7 @@ HlDrawPixel(IN ULONG PositionX,
FrameBufferIndex = 4 * HlpFrameBufferData.PixelsPerScanLine * PositionY + 4 * PositionX; FrameBufferIndex = 4 * HlpFrameBufferData.PixelsPerScanLine * PositionY + 4 * PositionX;
/* Set the color of the pixel by writing to the corresponding memory location */ /* Set the color of the pixel by writing to the corresponding memory location */
*((PUINT)(HlpFrameBufferData.Address + FrameBufferIndex)) = Color; *((PULONG)(HlpFrameBufferData.Address + FrameBufferIndex)) = Color;
} }
/** /**