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howard-stearns 2016-04-19 13:21:11 -07:00 committed by Brad Davis
parent 904e87313e
commit c274df6066
1 changed files with 7 additions and 2 deletions
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9
libraries/shared/src/GPUIdent.cpp
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@ -20,6 +20,8 @@
GPUIdent GPUIdent::_instance {};
GPUIdent* GPUIdent::ensureQuery(const QString& vendor, const QString& renderer) {
// Expects vendor and render to be supplied on first call. Results are cached and the arguments can then be dropped.
// Too bad OpenGL doesn't seem to have a way to get the specific device id.
if (_isQueried) {
return this;
}
@ -61,6 +63,7 @@ GPUIdent* GPUIdent::ensureQuery(const QString& vendor, const QString& renderer)
// I'd love to find a better way to learn which graphics adapter is the one we're using.
// Alas, no combination of vendor, renderer, and adapter name seems to be a substring of the others.
// Here we get a list of words that we'll match adapter names against. Most matches wins.
// Alas, this won't work when someone has multiple variants of the same card installed.
QRegExp wordMatcher{ "\\W" };
QStringList words;
words << vendor.toUpper().split(wordMatcher) << renderer.toUpper().split(wordMatcher);
@ -107,8 +110,10 @@ GPUIdent* GPUIdent::ensureQuery(const QString& vendor, const QString& renderer)
hr = spInstance->Get(CComBSTR(_T("AdapterRAM")), 0, &var, 0, 0);
if (hr == S_OK) {
var.ChangeType(CIM_UINT32); // We're going to receive some integral type, but it might not be uint.
_dedicatedMemoryMB = var.uintVal / (1024 * 1024);
var.ChangeType(CIM_UINT64); // We're going to receive some integral type, but it might not be uint.
// We might be hosed here. The parameter is documented to be UINT32, but that's only 4 GB!
const ULONGLONG BYTES_PER_MEGABYTE = 1024 * 1024;
_dedicatedMemoryMB = (uint) (var.ullVal / BYTES_PER_MEGABYTE);
}
else {
qCDebug(shared) << "Unable to get video AdapterRAM";