This updates the test to use the new public GetGlslIoMapper() and
TProgram::getGlslIoResolver() entry points, instead of depending on
internal points that are not available in shared library builds.
Like with the last few PRs from me, it fixes a warning that's commonly enabled in downstream projects that might want to consume glslang via FetchContent or equivalent.
It doesn't actually enable the warning, but that might be desirable.
I think I found a bug in the Spv.FromFile.cpp tests that would have been prevented had this warning been enabled all along.
I had to guess the value for the missing field, so went for the most common one in the list.
The only test case that used a different value before had an RWTexture1D, so if baseImageBinding is meaning the same kind of image as image load store in OpenGL, it would make sense that that would be the only one to need a non-zero value for the binding.
I'm a little concerned that the test wasn't previously failing with the incorrectly-assigned fields as it implies they don't make any difference, so the test might be too permissive.
For GL_EXT_vulkan_glsl_relaxed. When merging the default uniform block,
there were cases where symbols in the tree wern't updated to match the
new block structure after merging blocks together.
This change traverses the symbol tree and updates any references to the
merged block.
Avoid adding global uniform blocks to stages that don't already have it.
Otherwise multiple stages point to the same block object, and a
remapping that occurs later on will change the mapping on multiple
stages.
