lucent/cocco-ddraw
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auto stretching tweaks, try to get the lowest possible resolution in case 2x scaling isn't possible

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This commit is contained in:
FunkyFr3sh 2018-11-25 15:05:09 +01:00
parent 66ee108198
commit ee23027eda
2 changed files with 80 additions and 13 deletions
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2
ddraw.rc
View file

@ -4,7 +4,7 @@
#define VERSION_MAJOR 1
#define VERSION_MINOR 3
#define VERSION_BUILD 0
#define VERSION_REVISION 5
#define VERSION_REVISION 6
#define VERSION VERSION_MAJOR, VERSION_MINOR, VERSION_BUILD, VERSION_REVISION
#define VERSION_STRING ver_str(VERSION_MAJOR, VERSION_MINOR, VERSION_BUILD, VERSION_REVISION)

89
src/main.c
View file

@ -449,6 +449,38 @@ HRESULT __stdcall ddraw_RestoreDisplayMode(IDirectDrawImpl *This)
return DD_OK;
}
BOOL GetLowestResolution(float ratio, SIZE *outRes, DWORD minWidth, DWORD minHeight, DWORD maxWidth, DWORD maxHeight)
{
BOOL result = FALSE;
int orgRatio = (int)(ratio * 100);
SIZE lowest = { .cx = maxWidth + 1, .cy = maxHeight + 1 };
DWORD i = 0;
DEVMODE m;
while (EnumDisplaySettings(NULL, i, &m))
{
if (m.dmPelsWidth > minWidth &&
m.dmPelsHeight > minHeight &&
m.dmPelsWidth <= maxWidth &&
m.dmPelsHeight <= maxHeight &&
m.dmPelsWidth < lowest.cx &&
m.dmPelsHeight < lowest.cy)
{
int resRatio = (int)(((float)m.dmPelsWidth / m.dmPelsHeight) * 100);
if (resRatio == orgRatio)
{
result = TRUE;
outRes->cx = lowest.cx = m.dmPelsWidth;
outRes->cy = lowest.cy = m.dmPelsHeight;
}
}
i++;
}
return result;
}
void InitDirect3D9()
{
Direct3D9Active = Direct3D9_Create();
@ -576,7 +608,7 @@ HRESULT __stdcall ddraw_SetDisplayMode(IDirectDrawImpl *This, DWORD width, DWORD
// fail... compare resolutions
if (This->render.width > This->mode.dmPelsWidth || This->render.height > This->mode.dmPelsHeight)
{
// chosen game resolution higher than current resolution, use window mode for this case
// chosen game resolution higher than current resolution, use windowed mode for this case
This->windowed = TRUE;
}
else
@ -591,26 +623,61 @@ HRESULT __stdcall ddraw_SetDisplayMode(IDirectDrawImpl *This, DWORD width, DWORD
if ((This->render.width > This->mode.dmPelsWidth || This->render.height > This->mode.dmPelsHeight) ||
ChangeDisplaySettings(&This->render.mode, CDS_TEST) != DISP_CHANGE_SUCCESSFUL)
{
// try current display settings
This->render.width = This->mode.dmPelsWidth;
This->render.height = This->mode.dmPelsHeight;
SIZE res = {0};
//try to get a resolution with the same aspect ratio as the requested resolution
BOOL foundRes = GetLowestResolution(
(float)oldWidth / oldHeight,
&res,
oldWidth,
oldHeight,
This->mode.dmPelsWidth,
This->mode.dmPelsHeight);
if (!foundRes)
{
//try to get a resolution with the same aspect ratio as the current display mode
foundRes = GetLowestResolution(
(float)This->mode.dmPelsWidth / This->mode.dmPelsHeight,
&res,
oldWidth,
oldHeight,
This->mode.dmPelsWidth,
This->mode.dmPelsHeight);
if (foundRes)
maintas = TRUE;
}
This->render.width = res.cx;
This->render.height = res.cy;
This->render.mode.dmPelsWidth = This->render.width;
This->render.mode.dmPelsHeight = This->render.height;
if (ChangeDisplaySettings(&This->render.mode, CDS_TEST) != DISP_CHANGE_SUCCESSFUL)
if (!foundRes || ChangeDisplaySettings(&This->render.mode, CDS_TEST) != DISP_CHANGE_SUCCESSFUL)
{
// everything failed, use window mode instead
This->render.width = oldWidth;
This->render.height = oldHeight;
// try current display settings
This->render.width = This->mode.dmPelsWidth;
This->render.height = This->mode.dmPelsHeight;
This->render.mode.dmPelsWidth = This->render.width;
This->render.mode.dmPelsHeight = This->render.height;
This->windowed = TRUE;
if (ChangeDisplaySettings(&This->render.mode, CDS_TEST) != DISP_CHANGE_SUCCESSFUL)
{
// everything failed, use windowed mode instead
This->render.width = oldWidth;
This->render.height = oldHeight;
This->render.mode.dmPelsWidth = This->render.width;
This->render.mode.dmPelsHeight = This->render.height;
This->windowed = TRUE;
}
else
maintas = TRUE;
}
else
maintas = TRUE;
}
}
}