| 23 Mar 2020 |
| 04:52:47 |  Austin Johnson (Gitter) | you are taking the last frames future previous_frame_end.take().unwrap() joining the future where you acquire the image you are presenting to .join(acquire_future). This is the one that can limit frame rate. Then you are saying with .then_execute(queue.clone(), command_buffer).unwrap() after the acquire excute the command that you built. .then_swapchain_present(queue.clone(), swapchain.clone(), image_num) after the command you built finishes present it to the image. note the swapchain and image_num are from the acquire. The present I think also can limit frame rate. Finally the .then_signal_fence_and_flush(); is saying that with the combination of all previous futures wait for all them to complete before doing anything else. |
| 04:55:00 | Austin Johnson (Gitter) | When you break everything down vulkano's code will follow the general flow of other vulkan how to's, just that ours will have more saftey and simify some of the operations. |
| 26 Mar 2020 |
| 01:51:16 |  Wylie Кулик (Gitter) | yeah I made a lot of progress, thank you. |
| 01:52:40 | Wylie Кулик (Gitter) | Right now I'm trying to figure out how to then_execute (in the future = previous_frame_end.take()[...] multiple command buffers. I have a terrain mesh I want routed to one vertex shader, and my aircraft model routed to another shader. |
| 02:09:13 | Wylie Кулик (Gitter) | When I write two .then_executes in the same previous_frame_end chain, the final one overrides the initial. |
| 04:40:44 | Wylie Кулик (Gitter) | I see I need to use a secondary cb, what I was trying is using two primary cbs. |
| 04:54:44 | Wylie Кулик (Gitter) | I need to pass a RenderPassAbstract, so how to get that? how to invoke this secondary command buffer ? |
| 05:15:39 | Wylie Кулик (Gitter) | Okay I think I figured all that out, using execute_commands and render_pass.clone() for previous questions. Now I'm getting the compiler complaints about non-safety, so I guess I should try wrapping a bunch of this code in an unsafe block, right? How much of it...? |
| 05:17:43 | Wylie Кулик (Gitter) | Everything solved... except the RenderPassAbstract reference for the secondary command buffer definition. |
| 05:37:33 | Wylie Кулик (Gitter) | I'm trying to use Subpass and give it like framebuffers[image_num] stuff like that... |
| 05:37:58 | Wylie Кулик (Gitter) | That's for the secondary_graphics |
| 05:43:57 | Wylie Кулик (Gitter) | My framerates are pretty good btw. |
| 05:44:29 | Wylie Кулик (Gitter) | I was just wondering if there was a default or something. |
| 06:28:17 | Wylie Кулик (Gitter) | Solved the Subpass reference issue. Full steam ahead and all that... |
| 06:28:31 | Wylie Кулик (Gitter) | I have no more questions or comments at this time... |
| 27 Mar 2020 |
| 23:29:12 |  antonino (Gitter) | Hi, I'm rendering a scene twice and the second time i render it I use Equal for depth testing. It works until I put a compute dispatch in between the two, the depth gets all corrupted so I guess the layout isn't being transitioned. For the second pass on the scene I'm binding it to the frame buffer but not writing to it. Any ideas? |
| 29 Mar 2020 |
| 01:03:40 | Wylie Кулик (Gitter) | I'd be interested if the design of the API assumed people would be doing graphics or compute applications. I hadn't considered doing both in the same application. Interesting. |
| 10:31:01 | Austin Johnson (Gitter) | @pac85_gitlab dispatches don't automatically insert any pipeline barriers atm. I don't think anyways. You may have to split the command up and put a fence in there. |
| 17:31:00 | Wylie Кулик (Gitter) | I'm working with the example "runtime-shader" in order to set up a live reload development studio. I've gotten my source compiled to spirv with shaderc but can't figure out how to write this to file. &[u32] doesn't write... Was using fs::write then switched to File object let mut f = File::create(...) and f.write_all(binary_result.as_binary()); |
| 17:32:15 | Austin Johnson (Gitter) | f.write_all(binary_result.as_binary().to_vec()) |
| 17:32:22 | Austin Johnson (Gitter) | hmm |
| 17:32:23 | Austin Johnson (Gitter) | nvm |
| 17:32:26 | Austin Johnson (Gitter) | still a u32 |
| 17:33:44 | Austin Johnson (Gitter) | f.write_all(binary_result.as_binary_u8()).unwrap() |
| 17:35:56 | Wylie Кулик (Gitter) | ah thanks ! |
| 17:38:18 | Wylie Кулик (Gitter) | Works Thankyou!!! |
| 19:46:13 | antonino (Gitter) | @AustinJ235 this seems very strange to me, the various passes that i described are all on different command buffers and there are fences between their submissions. Your are telling me that disoatches don't involve layout transtion and yet wether i execute that particular compute shader that only reads the depth buffer it screws up. |
| 19:47:29 | antonino (Gitter) | (edited) ... that disoatches don't involve layout transtion and yet wether i execute that particular compute shader that only reads the depth buffer it ... => ... that dispatches don't involve layout transtion and yet wether i execute that particular compute shader that only reads the depth buffer makes a difference on wether the depth buffers it ... |
| 19:47:44 | antonino (Gitter) | (edited) ... buffers itscrews ... => ... buffers screws ... |
| 19:47:58 | Austin Johnson (Gitter) | I haven't really looked to deeply into the command code, only enough to fix the one bug. More eyes would be helpful. |
