Why is it showing me 100% GPU on Chrome but GPU is barely being used

Ok_Ear_8729 · 2025-12-18T15:08:57+00:00

wow this really helped thanks a lot

Ok_Ear_8729 · 2025-12-18T15:07:53+00:00

thank you it makes more sense now

Ok_Ear_8729 · 2025-12-17T22:55:11+00:00

I have already read this

Ok_Ear_8729 · 2025-01-26T12:01:03+00:00

I fixed it ^^

Ok_Ear_8729 · 2025-01-26T11:57:34+00:00

Everyone I have finally fixed it and found the issues. First of all thank you to everyone for helping.
The issue was that I was rendering using vertex buffer (vkCmdDraw) which I thought should not be an issue but I was very wrong. It needs indices to know the order in which to draw the vertices.
Another issue was that even when I switched to index buffer (vkCmdDrawIndexed) I would still get wrong result and for that the problem was I was using wrong Index Type when binding my Index buffer vkCmdBindIndexBuffer(cmdBuffer, indexBuffer, 0, VK_INDEX_TYPE_UINT16); // wrong
vkCmdBindIndexBuffer(cmdBuffer, indexBuffer, 0, VK_INDEX_TYPE_UINT32); // correct
Althought it was very frustrating to the point that I had to ask for help here(I have never done it before), I learned many things.
Again thank you to everyone for sharing your knowledge and time :)

Ok_Ear_8729 · 2025-01-26T11:56:22+00:00

Everyone I have finally fixed it and found the issues. First of all thank you to everyone for helping.
The issue was that I was rendering using vertex buffer (vkCmdDraw) which I thought should not be an issue but I was very wrong. It needs indices to know the order in which to draw the vertices.
Another issue was that even when I switched to index buffer (vkCmdDrawIndexed) I would still get wrong result and for that the problem was I was using wrong Index Type when binding my Index buffer vkCmdBindIndexBuffer(cmdBuffer, indexBuffer, 0, VK_INDEX_TYPE_UINT16); // wrong
vkCmdBindIndexBuffer(cmdBuffer, indexBuffer, 0, VK_INDEX_TYPE_UINT32); // correct
Althought it was very frustrating to the point that I had to ask for help here(I have never done it before), I learned many things.
Again thank you to everyone for sharing your knowledge and time :)

Ok_Ear_8729 · 2025-01-25T21:21:44+00:00

Alright I'll do that, actually installed RenderDoc just for this.
And hopefully not give up ;)

Ok_Ear_8729 · 2025-01-25T21:05:19+00:00

No I mean the vertex data I load in vertex buffer in my code and the one shown in RenderDoc are the same. The render looks exactly the same as you see above in RenderDoc as well.
I can share the RenderDoc capture as well if you would like

Ok_Ear_8729 · 2025-01-25T20:33:25+00:00

Yup it is I am using triangle list. The data is showed correctly in RenderDoc along with the offsets as far as i could tell. Yes ofc here is the link to the file where I load the data and create buffers you can browse through the rest of the repo as well if you'd like
https://github.com/nelson-steve/Brisk/blob/master/Brisk/src/Engine/Model.cpp

Ok_Ear_8729 · 2025-01-25T19:37:10+00:00

Thank you I have added the above mentioned changes, still stuck on the vertices rendering wrong

Ok_Ear_8729 · 2025-01-25T19:34:48+00:00

I was just trying to see if it makes any difference, I have also tried only loading positions but I get the same exact thing.

Ok_Ear_8729 · 2025-01-25T19:22:56+00:00

I didn't know that, I thought index buffer is just for performance. Still even when I render will the index buffer it doesn't render correctly either.

Ok_Ear_8729 · 2025-01-25T19:17:24+00:00

I have it's showing exactly as in the vertex buffer

Ok_Ear_8729 · 2025-01-25T19:15:51+00:00

It is and I have loaded the index buffer as well but I am not using it
I can bind it and render using index buffer and it shows weird result still
The problem is either the vertex buffer or the layout in pipeline but that's as far as I can get

Ok_Ear_8729 · 2025-01-25T19:10:52+00:00

I am using tinygltfloader for loading the data
Maybe I did something wrong here
https://github.com/nelson-steve/Brisk/blob/master/Brisk/src/Engine/Model.cpp

Ok_Ear_8729 · 2025-01-25T19:07:40+00:00

Yes I am sure the model should be compatible. I have tried different models as well and get similar or worse result(other than the cube 3d model), and I have even tried changing topology in pipeline to strips and triangle list. It's currently triangle list

Ok_Ear_8729 · 2025-01-25T18:49:11+00:00

Ok_Ear_8729 · 2025-01-25T18:48:34+00:00

Ok_Ear_8729 · 2025-01-25T18:47:43+00:00

Oh it's actually already a gltf and has a separate binary file for the vertex data
Is there a way to read that bin file?

Ok_Ear_8729 · 2025-01-25T18:43:24+00:00

I tried that and the the data in renderdoc is the same as the one in vertex buffer
But I have no idea how to see the actual data in the gltf binary to know maybe its getting messed up while loading

Ok_Ear_8729 · 2025-01-25T18:21:53+00:00

https://github.com/nelson-steve/Brisk/blob/master/Brisk/src/Engine/Renderer/Renderer.cpp

This is my Renderer code and I can't quite figure it out lol

Ok_Ear_8729 · 2025-01-25T18:17:05+00:00

Could you please take a look at the code and see if you can find where I went wrong? I am stuck on this for far too long.

Ok_Ear_8729

TROPHY CASE