Some intrinsics have different rules for the allowed data types than
expressions:
- Vectors and matrices at the same time are not allowed, regardless of
their dimensions. Even if they have the same number of components.
- Any combination of matrices is always allowed, even those when no
matrix fits inside another, e.g.:
float2x3 is compatible with float3x2, resulting in float 2x2.
The common data type is the min on each dimension.
This is the case for max, pow, ldexp, clamp and smoothstep; which suggest that
it is the case for all intrinsics where the operation is applied element-wise.
Tests for mul() are also added as a counter-example where the operation
is not element-wise.
Atomic ops on images with Unknown type will cause SPIR-V validation failure,
and assertion failure in Mesa debug builds. D3D12 allows atomics on typed
buffers, and this requires a distinction to be made between UAV reads and
atomic ops.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53874
Until vkd3d-shader is patched, an atomic op on a typed buffer where
StorageImageReadWithoutFormat is available will cause SPIR-V validation
failure, and assertion in Mesa debug builds, because the image will be
declared with Unknown format.
Unlike compatible_data_types() and implicit_compatible_data_types(),
this function is intended to be symmetrical. So it makes sense to
preserve the names "t1" and "t2" for the arguments.
Otherwise, for instance, the added test results in:
debug_hlsl_writemask: Assertion `!(writemask & ~VKD3DSP_WRITEMASK_ALL)' failed.
Which happens in allocate_variable_temp_register() when the variable's
type reg_size is <= 4 but its component count is larger, which may
happen if it contains objects.
Do not rely on a draw or dispatch command to do this.
This allows more efficiently testing syntax, in cases where testing the actual
shader functionality is not interesting.
We would like to generate SPIR-V for input formats other than DXBC.
The "vkd3d_" prefix is dropped, partly to make names shorter, and partly to help
clarify what is an internal function.
I prefer avoiding the vkd3d_* prefix on all internal functions, for these
reasons. However, I'm open to restoring it.
