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win32: fix screen rotation

This commit is contained in:
zeromus 2009-07-12 07:47:34 +00:00
parent 69ac706959
commit 67010790e1
1 changed files with 77 additions and 99 deletions
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176
desmume/src/windows/main.cpp
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@ -651,6 +651,80 @@ int CreateDDrawBuffers()
return 1;
}
template<typename T, int bpp> static T convert(u16 val)
{
switch(bpp)
{
case 24: case 32:
return RGB15TO24_REVERSE(val);
case 16: return RGB15TO16_REVERSE(val);
default:
return 0;
}
}
template<typename T, int bpp> static void doRotate(void* dst)
{
u8* buffer = (u8*)dst;
switch(GPU_rotation)
{
case 0:
case 180:
{
if(ddsd.lPitch == 1024)
{
if(GPU_rotation==180)
for(int i = 0, j=98303; j>=0; i++,j--)
((T*)buffer)[i] = convert<T,bpp>(((u16*)GPU_screen)[j]);
else
for(int i = 0; i < 98304; i++)
((T*)buffer)[i] = convert<T,bpp>(((u16*)GPU_screen)[i]);
}
else
{
if(GPU_rotation==180)
for(int y = 0; y < 384; y++)
{
for(int x = 0; x < 256; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)GPU_screen)[384*256 - (y * 256) - x - 1]);
buffer += ddsd.lPitch;
}
else
for(int y = 0; y < 384; y++)
{
for(int x = 0; x < 256; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)GPU_screen)[(y * 256) + x]);
buffer += ddsd.lPitch;
}
}
}
break;
case 90:
case 270:
{
if(GPU_rotation == 90)
for(int y = 0; y < 256; y++)
{
for(int x = 0; x < 384; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)GPU_screen)[((383-x) * 256) + y]);
buffer += ddsd.lPitch;
}
else
for(int y = 0; y < 256; y++)
{
for(int x = 0; x < 384; x++)
((T*)buffer)[x] = convert<T,bpp>(((u16*)GPU_screen)[((x) * 256) + 255 - y]);
buffer += ddsd.lPitch;
}
}
break;
}
}
void Display()
{
int res;
@ -669,107 +743,11 @@ void Display()
char* buffer = (char*)ddsd.lpSurface;
int i, j, sz=256*sizeof(u32);
switch(ddsd.ddpfPixelFormat.dwRGBBitCount)
{
case 24:
case 32:
{
switch(GPU_rotation)
{
case 0:
case 180:
{
if(ddsd.lPitch == 1024)
{
for(int i = 0; i < 98304; i++)
((u32*)buffer)[i] = RGB15TO24_REVERSE(((u16*)GPU_screen)[i]);
}
else
{
for(int y = 0; y < 384; y++)
{
for(int x = 0; x < 256; x++)
((u32*)buffer)[x] = RGB15TO24_REVERSE(((u16*)GPU_screen)[(y * 384) + x]);
buffer += ddsd.lPitch;
}
}
}
break;
case 90:
case 270:
{
if(ddsd.lPitch == 1536)
{
for(int i = 0; i < 98304; i++)
((u32*)buffer)[i] = RGB15TO24_REVERSE(((u16*)GPU_screen)[i]);
}
else
{
for(int y = 0; y < 256; y++)
{
for(int x = 0; x < 384; x++)
((u32*)buffer)[x] = RGB15TO24_REVERSE(((u16*)GPU_screen)[(y * 256) + x]);
buffer += ddsd.lPitch;
}
}
}
break;
}
}
break;
case 16:
{
switch(GPU_rotation)
{
case 0:
case 180:
{
if(ddsd.lPitch == 512)
{
for(int i = 0; i < 98304; i++)
((u16*)buffer)[i] = RGB15TO16_REVERSE(((u16*)GPU_screen)[i]);
}
else
{
for(int y = 0; y < 384; y++)
{
for(int x = 0; x < 256; x++)
((u16*)buffer)[x] = RGB15TO16_REVERSE(((u16*)GPU_screen)[(y * 384) + x]);
buffer += ddsd.lPitch;
}
}
}
break;
case 90:
case 270:
{
if(ddsd.lPitch == 768)
{
for(int i = 0; i < 98304; i++)
((u16*)buffer)[i] = RGB15TO16_REVERSE(((u16*)GPU_screen)[i]);
}
else
{
for(int y = 0; y < 256; y++)
{
for(int x = 0; x < 384; x++)
((u16*)buffer)[x] = RGB15TO16_REVERSE(((u16*)GPU_screen)[(y * 256) + x]);
buffer += ddsd.lPitch;
}
}
}
break;
}
}
break;
case 32: doRotate<u32,32>(ddsd.lpSurface); break;
case 24: doRotate<u32,24>(ddsd.lpSurface); break;
case 16: doRotate<u16,16>(ddsd.lpSurface); break;
default:
{
INFO("Unsupported color depth: %i bpp\n", ddsd.ddpfPixelFormat.dwRGBBitCount);