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https://github.com/gnif/LookingGlass.git
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[host] dxgi: fix d3d12 backend resource leak
The handle is only needed so we can open the resource, once we have it we can close the handle. We then cache the shared resource for future reuse if possible.
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0510d06c4b
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@ -44,25 +44,25 @@ struct D3D12Texture
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HANDLE event;
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};
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struct SharedCache
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{
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ID3D11Texture2D * tex;
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ID3D12Resource ** d12src;
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};
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struct D3D12Backend
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{
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float copySleep;
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ID3D12Device ** device;
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ID3D12CommandQueue ** commandQueue;
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ID3D12Resource ** src;
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struct D3D12Texture * texture;
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UINT64 fenceValue;
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ID3D12Fence ** fence;
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HANDLE event;
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// shared handle cache
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struct
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{
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ID3D11Texture2D * tex;
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HANDLE handle;
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}
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handleCache[10];
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int handleCacheCount;
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struct SharedCache sharedCache[10];
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int sharedCacheCount;
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};
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static struct DXGIInterface * dxgi = NULL;
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@ -283,8 +283,7 @@ static bool d3d12_create(struct DXGIInterface * intf)
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dxgi->texture[i].impl = this->texture + i;
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}
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comRef_newGlobal(&this->src);
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dxgi->useAcquireLock = false;
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// dxgi->useAcquireLock = false;
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return true;
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fail:
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@ -310,9 +309,6 @@ static void d3d12_free(void)
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if (this->event)
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CloseHandle(this->event);
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for(int i = 0; i < this->handleCacheCount; ++i)
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CloseHandle(this->handleCache[i].handle);
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free(this);
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this = NULL;
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}
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@ -324,25 +320,24 @@ static bool d3d12_copyFrame(Texture * parent, ID3D11Texture2D * src)
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struct D3D12Texture * tex = parent->impl;
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bool fail = true;
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comRef_defineLocal(IDXGIResource1, res1);
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ID3D12Resource * d12src = NULL;
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HRESULT status;
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if (this->copySleep > 0)
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nsleep((uint64_t)(this->copySleep * 1000000));
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HANDLE handle = INVALID_HANDLE_VALUE;
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if (this->handleCacheCount > -1)
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if (this->sharedCacheCount > -1)
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{
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// see if there is a cached handle already available for this texture
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for(int i = 0; i < this->handleCacheCount; ++i)
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if (this->handleCache[i].tex == src)
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for(int i = 0; i < this->sharedCacheCount; ++i)
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if (this->sharedCache[i].tex == src)
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{
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handle = this->handleCache[i].handle;
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d12src = *this->sharedCache[i].d12src;
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break;
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}
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}
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if (handle == INVALID_HANDLE_VALUE)
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if (!d12src)
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{
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status = ID3D11Texture2D_QueryInterface(src,
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&IID_IDXGIResource1, (void **)res1);
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@ -353,47 +348,48 @@ static bool d3d12_copyFrame(Texture * parent, ID3D11Texture2D * src)
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goto cleanup;
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}
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HANDLE handle;
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status = IDXGIResource1_CreateSharedHandle(*res1,
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NULL, DXGI_SHARED_RESOURCE_READ, NULL, &handle);
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if (FAILED(status))
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{
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DEBUG_WINERROR("Failed to get create shared handle for texture", status);
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fail = true;
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goto cleanup;
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}
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// store the handle for later use
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if (this->handleCacheCount < ARRAY_LENGTH(this->handleCache))
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{
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this->handleCache[this->handleCacheCount].tex = src;
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this->handleCache[this->handleCacheCount].handle = handle;
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++this->handleCacheCount;
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}
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else
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{
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// too many handles to cache, disable the cache entirely
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for(int i = 0; i < this->handleCacheCount; ++i)
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CloseHandle(this->handleCache[i].handle);
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this->handleCacheCount = -1;
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}
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}
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status = ID3D12Device_OpenSharedHandle(*this->device,
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handle, &IID_ID3D12Resource, (void **)this->src);
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if (this->handleCacheCount == -1)
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handle, &IID_ID3D12Resource, (void **)&d12src);
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CloseHandle(handle);
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if (FAILED(status))
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{
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DEBUG_WINERROR("Failed to get create shared handle for texture", status);
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DEBUG_WINERROR("Failed to open the shared handle for texture", status);
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goto cleanup;
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}
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// store the texture for later use
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if (this->sharedCacheCount < ARRAY_LENGTH(this->sharedCache))
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{
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struct SharedCache *cache = &this->sharedCache[this->sharedCacheCount++];
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cache->tex = src;
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*comRef_newGlobal(&cache->d12src) = (IUnknown *)d12src;
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}
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else
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{
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// too many handles to cache, disable the cache entirely
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for(int i = 0; i < this->sharedCacheCount; ++i)
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{
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struct SharedCache *cache = &this->sharedCache[this->sharedCacheCount++];
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comRef_release(cache->d12src);
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}
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this->sharedCacheCount = -1;
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}
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}
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D3D12_TEXTURE_COPY_LOCATION srcLoc =
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{
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.pResource = *this->src,
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.pResource = d12src,
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.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX,
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.SubresourceIndex = 0
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};
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