This change removes new Load variations (LoadHalf, LoadFloat, etc) for RWByteAddressBuffer/ByteAddressBuffer methods and add templated Load intrinsics. This templated Load only works on scalar or vector types, and its variations (Load2, Load3, Load4, etc) do not work with templates and work as it did before (only storing uints). For Store operation, you can store any scalar or vector types of up to 16 bytes, while prior to 2018 Store only supported storing uint scalar.
[[vk::push_constant]] can be attached to a global variable of
struct type to put that variable in the PushConstant storage
class.
PushConstant should be of OpTypeStruct type with std430 layout.
This change is to add fixed width scalar types in HLSL 2018.
These types are: int16_t, uint16_t, int32_t, uint32_t, float16_t, float32_t, and float64_t.
Prior HLSL versions do not support these fixed width types.
This change also renames /no-min-precision command line option to /enable-16bit-types. int16_t and uint16_t are only allowed with this mode.
* Translation of GroupMemoryBarrier(WithGroupSync)
* Translation of DeviceMemoryBarrier(WithGroupSync)
* Translation of AllMemoryBarrier(WithGroupSync)
This change is to introduce native precision types for shader model 6.2. With native half (float16) types, we will introduce native int16/uint16 types with same command line option. This means that one option will disable all min precision types. For now, int16/uint16 types will be exposed on HLSL level as int16_t and uint16_t.
This change also includes some constant buffer fixes for 16 bit types, as well as int64 types.
This commit supports .Append() and .RestartStrip() method calls
on stream-output objects, which will be translated into SPIR-V
OpEmitVertex and OpEndPrimitive, respectively.
For each .Append() call, all affected stage output variables
will be flushed.
This change is an extension of float16 support. We are adding LoadHalf, LoadFloat, and LoadDouble method to byte address buffer so that users can access data from byte address buffer by these types. Also starting shader model 6.2, we are mapping byte address buffer and structure buffer load/store operations to RawBufferLoad/Store to differentiate raw buffer load from typed buffer load. Unlike BufferLoad for typed buffers, RawBufferLoad for min precision types will not have its min precision values as its return types, but their actual scalar size in buffer (i.e rawBufferLoad.i32 for min16int and rawBufferLoad.f32 for min16float). RawBufferLoad/Store contains additional parameters, where mask was required for correct status behavior for CheckAccessFullyMapped, and alignment is for relative alignment for future potential benefit for backend.
Also make parameter names clear that they are for patch constant
function (PCF), not generally patch constant, which also involves
some domain shader inputs.
As per the Vulkan spec requirement:
Any variable decorated with Position must be declared as a
four-component vector of 32-bit floating-point values.
But for HS/DS/GS, we actually have an extra arrayness. If we
generate a stand-alone Postion builtin variable, it will be
an array of float4, which does not comply with the spec.
Similary for the type requirements on ClipDistance and
CullDistance.
The spec could have an problem on this issue, but the GLSL way
is to emit a gl_PerVertex that contains Position, ClipDistance,
and CullDistance. That satisfies the current Vulkan spec.
This commit converts VS output, HS/DS input and output, GS
input to emit the gl_PerVertex struct. It also splits arrays
of structs into arrays of the fields for HS/DS/GS input/output.
ClipDistance/CullDistance is also supported in this commit,
which requires quite some non-trivial handling.
Lei Zhang
Ehsan
Young Kim
Xiang Li
John Porto
Jeff Noyle
Tex Riddell