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MVKImage fixes for texture view creation.

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Fix potential deadlock when getMTLTexture(MTLPixelFormat) calls getMTLTexture().
Clear texture views when base texture is removed.
This commit is contained in:
Bill Hollings 2020-03-31 13:25:20 -04:00
parent d5c62cc55a
commit 453fbb4045
1 changed files with 8 additions and 4 deletions
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12
MoltenVK/MoltenVK/GPUObjects/MVKImage.mm
View File

@ -287,11 +287,13 @@ id<MTLTexture> MVKImage::getMTLTexture(MTLPixelFormat mtlPixFmt) {
id<MTLTexture> mtlTex = _mtlTextureViews[mtlPixFmt];
if ( !mtlTex ) {
// Lock and check again in case another thread has created the texture.
// Lock and check again in case another thread has created the view texture.
// baseTex retreived outside of lock to avoid deadlock if it too needs to be lazily created.
id<MTLTexture> baseTex = getMTLTexture();
lock_guard<mutex> lock(_lock);
mtlTex = _mtlTextureViews[mtlPixFmt];
if ( !mtlTex ) {
mtlTex = [getMTLTexture() newTextureViewWithPixelFormat: mtlPixFmt]; // retained
mtlTex = [baseTex newTextureViewWithPixelFormat: mtlPixFmt]; // retained
_mtlTextureViews[mtlPixFmt] = mtlTex;
}
}
@ -348,10 +350,12 @@ id<MTLTexture> MVKImage::newMTLTexture() {
return mtlTex;
}
// Removes and releases the MTLTexture object, so that it can be lazily created by getMTLTexture().
// Removes and releases the MTLTexture object, and all associated texture views
void MVKImage::resetMTLTexture() {
[_mtlTexture release];
_mtlTexture = nil;
for (auto elem : _mtlTextureViews) { [elem.second release]; }
_mtlTextureViews.clear();
}
void MVKImage::resetIOSurface() {
@ -364,6 +368,7 @@ void MVKImage::resetIOSurface() {
IOSurfaceRef MVKImage::getIOSurface() { return _ioSurface; }
VkResult MVKImage::useIOSurface(IOSurfaceRef ioSurface) {
lock_guard<mutex> lock(_lock);
if (!_device->_pMetalFeatures->ioSurfaces) { return reportError(VK_ERROR_FEATURE_NOT_PRESENT, "vkUseIOSurfaceMVK() : IOSurfaces are not supported on this platform."); }
@ -787,7 +792,6 @@ MVKImage::~MVKImage() {
if (_deviceMemory) { _deviceMemory->removeImage(this); }
resetMTLTexture();
resetIOSurface();
for (auto elem : _mtlTextureViews) { [elem.second release]; }
}