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Fix 8-bit storage nearly always using the

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UniformAndStorageBuffer8BitAccess capability.

When using the 8-bit storage extension it basically always used the
`UniformAndStorageBuffer8BitAccess` capability, even in cases where it
wasn't required. For instance if we are targeting Vulkan 1.1 (SPIR-V 1.3
or higher), and we are only using 8-bit types in an SSBO, we only need
the `StorageBuffer8BitAccess` capability.

I fixed this by enabling storage buffer use in Vulkan 1.1 / SPIR-V 1.3
or higher, and then changing the logic to match.

I also added some tests that will output different capabilities when run
on Vulkan 1.0 and 1.1, thus they are added twice to the test list (one
for each version).

Fixes #1539
This commit is contained in:
Neil Henning 2018-10-23 15:02:29 +01:00
parent a08f465d53
commit b6b01f067b
27 changed files with 404 additions and 112 deletions
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4
glslang/MachineIndependent/ParseHelper.cpp
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@ -76,6 +76,10 @@ TParseContext::TParseContext(TSymbolTable& symbolTable, TIntermediate& interm, b
globalBufferDefaults.layoutMatrix = ElmColumnMajor;
globalBufferDefaults.layoutPacking = spvVersion.spv != 0 ? ElpStd430 : ElpShared;
// use storage buffer on SPIR-V 1.3 and up
if (spvVersion.spv >= EShTargetSpv_1_3)
intermediate.setUseStorageBuffer();
globalInputDefaults.clear();
globalOutputDefaults.clear();