Questions tagged [synchronization]
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17 questions
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Vulkan synchronisation for vkCmdDispatchIndirect
I have two compute shaders that are to be executed one after the other. The first compute shader performs some calculations and stores the number of results in a buffer with ...
- 1,493
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92
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Vulkan image queue ownership transition
My application has two queues: one for host<->device transfer operations and one for graphics. The sharingMode of my resources is always ...
- 1
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99
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Using SSBO as atomic stack or queue
I have two ssbo buffers:
the data SSBO: It is an array of a structure that contains information.
the delete SSBO: It is a list of free indices within the data SSBO.
Each compute shader invocation ...
- 1,493
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How can I determine the Vulkan synchronization scopes for pipeline barriers?
The Vulkan spec introduces synchronization scopes in section 6 in a bit of an abstract way. It refers to a "set of operations" being contained in a synchronization scope. How can I determine ...
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How do the vulkan fences behave on the GPU?
I went through a lot of Vulkan tutorials and each of them has talked about fences, which is good, but each of them does not clearly tell what exectly happen on GPU. It is so frustrating trying to ...
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Vulkan synchronization stageBuffer
I am writing a program that uses a transfer queue and a compute queue. As the names suggest, the transfer queue loads data from the CPU to the GPU and from the GPU to the CPU and the compute queue ...
- 1,493
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Compute shader in DirextX: difference between four kinds of memory barriers
There are four kinds of memory barriers in DirectX. Their names and definitions are:
DeviceMemoryBarrier: Blocks execution of all threads in a group until all ...
- 11
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OpenGL compute shader workgroup synconization
I am calculating the Summed Area Table(SAT) of a texture with help of a compute shader in OpenGL.
The texture which needs to be summed, has a dimension size of more than my GPU supports (...
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Why use buffer streaming instead of collecting data on CPU and uploading to GPU all at once
Say I have a couple of meshes that I want to reupload to GPU for each frame. I can do this by generating a single array from all the meshes on CPU and then uploading to GPU (ex with ...
- 526
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Compute shader workgroups execution and size [closed]
I want to clarify how are workgroups executed on various GPUs, thus I have several questions. I know that different GPU architectures work differently, but I expect an answer YES if there is single (...
- 193
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Can D3D12 resource barriers be used to synchronize between the compute and 3D engine?
What is the best way to synchronize resource access between the (async) compute engine and the 3d engine (aka. direct engine) in D3D 12?
I found this paragraph about multi-engine synchronization on ...
- 61
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Only each third image in swapchain is being used, causing flickering
I've managed to write a "small" Vulkan program that outputs a solid color using compute shader directly to swapchain.
However, it doesn't work properly. ImageMemoryBarriers I've setup don't ...
- 231
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568
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how to update my scene graph?
I am updating my scene graph in response to user input and the network. What is the best way to do this? The updating threads are separate. Some approaches I am thinking about:
double buffer. There ...
- 101
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841
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Do we really need a fence event?
One of the hardest things for me with the modern closer to the metal graphics APIs is understanding synchronization. I usually try to simplify things in order to understand the concept better.
In ...
- 110
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Directly use Transform Feedback primitive count as instance count for drawing
When using Transform Feedback to capture the vertices generated by the primtive generation stage, we can use glDrawTransformFeedback to directly draw the generated ...
- 1,645