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[dxgi] FindClosestMatchingMode: Handle Width/Height = 0 case

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When an applicationn calls this method with the width or height
set to 0, we are allowed to pick any resolution, so we'll try to
find one close to the *current* display mode which usually returns
the current display mode itself.
This commit is contained in:
Philip Rebohle 2018-06-14 11:32:10 +02:00
parent c93f2b980e
commit 7a22fa22a7
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GPG Key ID: C8CC613427A31C99
1 changed files with 16 additions and 3 deletions
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19
src/dxgi/dxgi_output.cpp
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@ -121,19 +121,32 @@ namespace dxvk {
if (modes.size() == 0)
return DXGI_ERROR_NOT_FOUND;
// If no valid resolution is specified, find the
// closest match for the current display resolution
UINT targetWidth = pModeToMatch->Width;
UINT targetHeight = pModeToMatch->Height;
if (targetWidth == 0 || targetHeight == 0) {
DXGI_MODE_DESC activeMode;
GetDisplayMode(&activeMode, ENUM_CURRENT_SETTINGS);
targetWidth = activeMode.Width;
targetHeight = activeMode.Height;
}
// Select mode with minimal height+width difference
UINT minDifference = std::numeric_limits<unsigned int>::max();
for (auto& mode : modes) {
UINT currDifference = std::abs(int(pModeToMatch->Width - mode.Width))
+ std::abs(int(pModeToMatch->Height - mode.Height));
UINT currDifference = std::abs(int(targetWidth - mode.Width))
+ std::abs(int(targetHeight - mode.Height));
if (currDifference <= minDifference) {
minDifference = currDifference;
*pClosestMatch = mode;
}
}
return S_OK;
}