Another two weeks have passed since my last post, so it has now been a month and a half since I started working. In the past two weeks, I have completed adding compute queue support to GVulkanSurface so you can now use compute shaders and also started to work on adding a raytracing flag to the graphics options.
The main focus of the last two weeks has been on fully implementing the compute queue support and the matching unit test, so let's start by going over that. The first thing I did was create a new function for getting the compute queue. This was quite simple as it followed the same pattern as getting the graphics or present queue.
Then I also updated the function that got all of the queue family indexes (more on that later). The last thing to update before working on the unit testing side was to update the get gpu function to add more weight to a gpu that had compute queue support.
To test the compute queue support I had to write a glsl shader, for the compute queue test I was told to test it away from graphics, so I focused on testing with actual computing/math by writing my shader to take an input buffer square the values and return them in an output buffer. I chose to use two seperate buffers instead of just one for better readability.
The test was a success! Which meant I had successfully written compute queue support for Vulkan, and a successful unit test as well. After a code review, I just needed to add back a deprecated version of a function using Doxygen's deprecated feature to prevent any problems on the back end. And then the merge was successful! Meaning that Gateware now supports compute queues and shaders in Vulkan.
Now That leaves us with what I am currently working on which is adding a raytracing flag to the graphics options so that it will be easier to work with raytracing using Gateware. I just started this so I haven't got much to say yet, but will be posting about that in the next post!
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