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Avoid unnecessary calculations when the passed DPI is the active DPI

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Matt
2020-12-31 20:36:17 +02:00
parent ac2057775e
commit 114be0e62b
1 changed files with 6 additions and 0 deletions
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6
src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
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@@ -1010,6 +1010,12 @@ void OpenGLDrawingContext::HandleTransparency()
void OpenGLDrawingContext::SetDPI(rct_drawpixelinfo* dpi) void OpenGLDrawingContext::SetDPI(rct_drawpixelinfo* dpi)
{ {
if (dpi == _dpi)
{
// Don't need to recalculate anything if identical.
return;
}
auto screenDPI = _engine->GetDPI(); auto screenDPI = _engine->GetDPI();
auto bytesPerRow = screenDPI->GetBytesPerRow(); auto bytesPerRow = screenDPI->GetBytesPerRow();
auto bitsOffset = static_cast<size_t>(dpi->bits - screenDPI->bits); auto bitsOffset = static_cast<size_t>(dpi->bits - screenDPI->bits);