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More video code moved to ASM

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This commit is contained in:
pagefault
2003-02-23 04:18:48 +00:00
parent c8e54760f2
commit b2c28fedb0
2 changed files with 42 additions and 63 deletions
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66
zsnes/src/win/winlink.cpp
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@@ -2042,6 +2042,9 @@ void clearwin()
UnlockSurface();
}
extern void DrawWin256x224x16();
extern void DrawWin256x224x32();
void drawscreenwin(void)
{
DWORD i,j,color32;
@@ -2094,66 +2097,9 @@ void drawscreenwin(void)
switch (BitDepth)
{
case 16:
if (MMXSupport == 1) {
_asm {
push es
mov ax,ds
mov es,ax
xor eax,eax
mov esi,ScreenPtr
mov edi,SurfBufD
movsx edx,resolutn
sub edx,2
Copying3:
mov ecx,32
CopyLoop:
movq mm0,[esi]
movq mm1,[esi+8]
movq [edi],mm0
movq [edi+8],mm1
add esi,16
add edi,16
dec ecx
jnz CopyLoop
inc eax
add edi,pitch
sub edi,512
sub esi,512
add esi,576
cmp eax,edx
jne Copying3
xor eax,eax
mov ecx,128
rep stosd
pop es
emms
}
} else {
_asm {
push es
mov ax,ds
mov es,ax
xor eax,eax
mov esi,ScreenPtr
mov edi,SurfBufD
movsx edx,resolutn
sub edx,2
Copying:
mov ecx,128
rep movsd
inc eax
add edi,pitch
sub edi,512
sub esi,512
add esi,576
cmp eax,239
jne Copying
xor eax,edx
mov ecx,128
rep stosd
pop es
}
}
{
DrawWin256x224x16();
}
break;
case 32:
_asm {