Add Access Flags for DescriptorBinding #224
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spencer-lunarg
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spencer-lunarg
commented
Oct 29, 2023
| @@ -115,6 +115,7 @@ all_descriptor_bindings: | |||
| block: *bv2 # | |||
| array: { dims_count: 0, dims: [] } | |||
| accessed: 1 | |||
| access_flags: 0x00000000 # NONE | |||
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last thing left in PR is figure out why this is not consistent with accessed
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this is
%13 = OpAccessChain %_ptr_StorageBuffer__struct_3 %2
%14 = OpArrayLength %uint %13 1
OpReturn
OpFunctionEn
and from looking at spec, this is not considered a read, just an access
spencer-lunarg
commented
Oct 29, 2023
| @@ -316,6 +317,7 @@ all_descriptor_bindings: | |||
| block: *bv7 # "" | |||
| array: { dims_count: 0, dims: [] } | |||
| accessed: 1 | |||
| access_flags: 0x00000000 # NONE | |||
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seems
OpStore -> OpAccessChain -> OpAccessChain -> OpVariable
is a valid thing... need to fix
chaoticbob
suggested changes
Oct 30, 2023
| SPV_REFLECT_ACCESS_READ = 0x00000001, | ||
| SPV_REFLECT_ACCESS_WRITE = 0x00000002, | ||
| // Atomic will always also be marked as READ and WRITE | ||
| SPV_REFLECT_ACCESS_ATOMIC = 0x00000004, |
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Is there ever a case where ATOMIC is used or checked by itself it it always inlcudes READ and WRITE? Wondering if there's a different way to express this.
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so I had it before as separate... #222 (comment) convinced me otherwise
This was referenced Nov 18, 2023
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closes #222
The logic uses the same pattern as we do to detect
accessedboolean but expands the logic to look up one more instruction to see what type it wasExample: if we have the instructions
OpImageRead -> OpLoad -> OpVariable, before we just tracked theOpLoadtouched theOpVariableand marked asaccessednow we track this
OpLoadas aSpvReflectPrvAccessedVariableand we know both theOpVariableit points to, but now also track the Result ID so theOpImageReadcan find thisOpLoadI wrote the code to be consistent with the current code, which I think could be cleaned up to be easier to read/maintain, but would like to do that as a separate PR