yanchith Hey there!
I am encountering some problems with RenderPass::set_viewport() and would like to know what values are allowed, at least for x, y, w and h. I've got 2 problems overall:
- I can easily get the implementation to segfault if I input arbitrary numbers (but say within 10x of the target texture width/height).
- Should providing negative
wandhreverse the rendered result on the X and Y axes? It seems to do so withh, but not withw- for negativewI just get a black texture.
Is RenderPass::set_viewport() more or less an equivalent of glViewport(), or am I missing something?
Kangz It is the equivalent of glViewport yes. The upstream webgpu spec hasn't worked out the exact validation rules but I know Vulkan doesn't like when the viewport you set is outside of the 3x3 original viewport centered on the framebuffer. Also it requires Vulkan 1.1 or an extension to allow flipping Y
Thought someone may enjoy seeing this
It doesn't embed but oh well
I made a little brush engine on top of WGPU
Am I right in thinking that, in
swap_chain_present, if queue.present_surface blocks, it still has the write locks acquired and those will have other threads wait?
I've been confused about how the
Tokens work so I wanted to verify
@layl_gitlab how do you feel about continuing on Matrix instead of here? We are moving to the Matrix
lijinlei @kvark if need to update an existing buffer every frame, map_write or copy_buffer_to_buffer which is the best choice?as gpuweb docs mentioned, user can reusing upload buffers to reduces overhead, is it possible or appropriate in wgpu-rs?
to answer your question, re-using upload buffers is pretty much blocked on #9, so creating a new upload buffer and copying from it is the way to go, for now
m4b: but this is very interesting, thanks for the link!
just some 4.5K lines of code, wooh
m4b 🤷♂️
I'm using it on iOS Riot
I have updated deps to winit 0.20 and now I see black background on X11 but it works on Windows 10 cbrewster/brewcode#1
Next step would be getting gfx-rs master and trying the examples
I have already converted sotrh.github.io to winit 0.20 up to tutorial 6 and all work
In case someone is interested, I just fixed wgpu for scopes for most recent versions of wgpu and scopes