We don't need to keep track of the type itself, only its width since the
type check of the OpSwitch can be done at runtime. This also avoids
creating a dangling reference.
Signed-off-by: Sebastián Aedo <saedo@codeweavers.com>
Only emit user(locnN) for tess builtin input variables, and allow output builtin
to emit user(clip/cullN). Previously, output builtin would emit location if
input builtin also existed.
Moving out the logic from the parser as requested because it's sensitive
to try to keep the parsing the most simple process as said.
For that, the load_types is now tracked in the ParsedIR, which can be
accessed in the Compiler struct. The switch cases are fixed in the CFG
stage since that's the point where the nullptr is deref.
Signed-off-by: Sebastián Aedo <saedo@codeweavers.com>
According to the spec, if the `condition` has a type wider than 32 bits,
the literals to be compared with will be of that size as well.
This caused some misalignments if the `condition` was bigger than 32,
causing a nullptr return without further explanation.
Currently neither GLSL nor MSL supports uint64 as the condition but the
SPIRV allows it anyway.
This also fixes#1768.
Signed-off-by: Sebastián Aedo <saedo@codeweavers.com>
Previous test for SPIRVCrossDecorationPhysicalTypePacked on parent struct
when unpacking member struct was too restrictive, and not needed as long
as padding compensates.
Populate member_type_index_redirection as reverse lookup, not forward lookup.
Move use of member_type_index_redirection from CompilerMSL::to_member_reference()
to CompilerGLSL::access_chain_internal() to access all redirected type info,
not just name.
Promote to short instead and do simple casts on load/store instead.
Not 100% complete fix since structs can contain booleans, but this is
getting into pretty ridiculously complicated territory.
Additional usecases include array and vector indexing, variable declarations,
loop initializers, function return values, switch statement evaluations,
and various specialized MSL operations.
Ultimately, we might consider refactoring CompilerMSL::to_expression()
to always take into consideration possible unpacking behavior.
Refactor CompilerGLSL::to_enclosed_unpacked_expression()
for conciseness and consistency with similar functionality.
Emit synthetic functions before function constants.
Support use of spvQuantizeToF16() in function constants for numerical
behavior consistency with the op code.
Ensure subnormal results from OpQuantizeToF16 are flushed to zero per SPIR-V spec.
Adjust SPIRV-Cross unit test reference shaders to accommodate these changes.
Any MSL reference shader that inclues a synthetic function is affected,
since the location it is emitted has changed.
Add spvQuantizeToF16() family of synthetic functions to convert
from float to half and back again, and add function attribute
[[clang::optnone]] to honor infinities during conversions.
Adjust SPIRV-Cross unit test reference shaders to accommodate these changes.
