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win32: scalers: add a slightly optimized case for non-filtered. probably doesn't add up to much

This commit is contained in:
zeromus 2009-07-16 04:45:04 +00:00
parent da1bc169a1
commit 646998871e
2 changed files with 17 additions and 10 deletions
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18
desmume/src/windows/main.cpp
View File

@ -646,6 +646,8 @@ template<typename T, int bpp> static T convert(u16 val)
template<typename T, int bpp> static void doRotate(void* dst)
{
u8* buffer = (u8*)dst;
int size = video.size();
u16* src = video.finalBuffer();
switch(video.rotation)
{
case 0:
@ -654,11 +656,11 @@ template<typename T, int bpp> static void doRotate(void* dst)
if(ddsd.lPitch == 1024)
{
if(video.rotation==180)
for(int i = 0, j=video.size()-1; j>=0; i++,j--)
((T*)buffer)[i] = convert<T,bpp>(((u16*)video.filteredbuffer)[j]);
for(int i = 0, j=size-1; j>=0; i++,j--)
((T*)buffer)[i] = convert<T,bpp>((src)[j]);
else
for(int i = 0; i < video.size(); i++)
((T*)buffer)[i] = convert<T,bpp>(((u16*)video.filteredbuffer)[i]);
for(int i = 0; i < size; i++)
((T*)buffer)[i] = convert<T,bpp>(src[i]);
}
else
{
@ -666,7 +668,7 @@ template<typename T, int bpp> static void doRotate(void* dst)
for(int y = 0; y < video.height; y++)
{
for(int x = 0; x < video.width; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)video.filteredbuffer)[video.height*video.width - (y * video.width) - x - 1]);
((T*)buffer)[x] = convert<T,bpp>(src[video.height*video.width - (y * video.width) - x - 1]);
buffer += ddsd.lPitch;
}
@ -674,7 +676,7 @@ template<typename T, int bpp> static void doRotate(void* dst)
for(int y = 0; y < video.height; y++)
{
for(int x = 0; x < video.width; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)video.filteredbuffer)[(y * video.width) + x]);
((T*)buffer)[x] = convert<T,bpp>(src[(y * video.width) + x]);
buffer += ddsd.lPitch;
}
@ -688,7 +690,7 @@ template<typename T, int bpp> static void doRotate(void* dst)
for(int y = 0; y < video.width; y++)
{
for(int x = 0; x < video.height; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)video.filteredbuffer)[(((video.height-1)-x) * video.width) + y]);
((T*)buffer)[x] = convert<T,bpp>(src[(((video.height-1)-x) * video.width) + y]);
buffer += ddsd.lPitch;
}
@ -696,7 +698,7 @@ template<typename T, int bpp> static void doRotate(void* dst)
for(int y = 0; y < video.width; y++)
{
for(int x = 0; x < video.height; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)video.filteredbuffer)[((x) * video.width) + (video.width-1) - y]);
((T*)buffer)[x] = convert<T,bpp>(src[((x) * video.width) + (video.width-1) - y]);
buffer += ddsd.lPitch;
}

9
desmume/src/windows/video.h
View File

@ -28,7 +28,6 @@ public:
void reset() {
width = 256;
height = 384;
}
void setfilter(int filter) {
@ -51,6 +50,13 @@ public:
SSurface src;
SSurface dst;
u16* finalBuffer() const
{
if(currentfilter == NONE)
return (u16*)GPU_screen;
else return (u16*)filteredbuffer;
}
void filter() {
src.Height = 384;
@ -66,7 +72,6 @@ public:
switch(currentfilter)
{
case NONE:
memcpy(filteredbuffer, GPU_screen, 256*192*4);
break;
case HQ2X:
RenderHQ2X(src, dst);