This test is currently miscompiling on SM4 because
copy_propagation_invalidate_variable_from_deref_recurse() is not always
invalidating the right components.
Basically, separate lower_casts_to_int() into the lowering of the CAST
and the lowering of the TRUNC, so that TRUNCs that are not part of a
cast are lowered as well.
While fxc allows full expressions inside the angle brackets, we don't parse that
yet as it'd be quite a mess to properly do so with yacc, and I'm not aware of any
game doing so in their shaders.
The current TPF validator enforces that for each register involved
in a DCL_INDEX_RANGE instruction there must be a signature element
for that register and the DCL_INDEX_RANGE write mask. This is an
excessively strong request, and causes some shaders from The Falconeer
to be invalidly rejected.
The excessively strong check was needed to avoid triggering a bug
in the I/O normaliser. Since that bug is now solved, the check
can be relaxed.
Since this test depend on the specific code generated by the
native d3dcompiler we add the possibility to specify a "raw"
shader using a hex format. When the shader assembler is finally
available they should be replaced with assembly code.
