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473798bf
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2024-11-28T00:38:36
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WGSL: @align appropriate struct members in uniforms.
Structs used in the uniform address space need to have certain
members aligned according to the uniform address space layout
constraints (substantially similar to std140).
This CL adds @align annotations where necessary, in structs used
in the uniform address space. Strictly speaking, it's okay to apply
@align annotations to all structs used in the WGSL program, but this
CL uses a pre-pass AST traverser to records all the structs used
in the uniform address space. This is to avoid more unreadable
generated code, and when more transformations are applied to
these structs in future CLs, less generated code overall.
After this, the only types that can't yet be used in a uniform
are matCx2, arrays with stride not divisble by 16 (except when the
array element type is a struct), and bools.
This is #1 in struct translation in
https://docs.google.com/document/d/17Qku1QEbLDhvJS-JJ9lPQAbnuZtLxWhG-ha5eCUhtEY/edit?tab=t.0#bookmark=id.rudfrn2o6jv1
Bug: angleproject:376553328
Change-Id: Ibff3414043a6ecb4a01ef8e3e71dad9c1066ddfd
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6056951
Commit-Queue: Matthew Denton <mpdenton@chromium.org>
Reviewed-by: Liza Burakova <liza@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
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4a835cf2
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2024-11-01T13:31:00
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WebGPU: send uniforms to GPU for use in shader
Basic uniforms should now be accessible in the shader during a draw
call, rather than just via glGetUniform*().
This is unoptimized and creates a new GPU-side copy of all the uniforms,
every time any uniform changes.
This sets up the bind group layout for a pipeline and sets the bind
groups in the renderer pass. Right now these bind groups only contain
the default uniform blocks, but in the future will need to contain
textures, samplers, and non-default uniform blocks (UBOs).
Bug: angleproject:376553328
Change-Id: I50891b81ab2ee374d674213257f76319c0222120
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5980972
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Liza Burakova <liza@chromium.org>
Commit-Queue: Matthew Denton <mpdenton@chromium.org>
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a6ee4641
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2024-09-25T11:41:47
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WGSL: Output default uniform block and accesses to it
Default uniforms are put into a WGSL struct, and all accesses
of those uniforms now output struct accesses.
Similarly to I/O vars and builtins, these are outputted in a
pre-pass, but in the future it might make sense to do what
Vulkan does and do an AST transformation to put the default
uniforms into a UBO which should be outputted similarly.
This does not handle bool, matCx2, or array of element size < 16.
Bug: angleproject:42267100
Change-Id: If29e2895a8aba3212b581813316af87273c1515c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5878759
Reviewed-by: Liza Burakova <liza@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Matthew Denton <mpdenton@chromium.org>
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