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shader/memory: Implement ATOM.ADD

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ATOM operates atomically on global memory. For now only add ATOM.ADD
since that's what was found in commercial games.

This asserts for ATOM.ADD.S32 (handling the others as unimplemented),
although ATOM.ADD.U32 shouldn't be any different.

This change forces us to change the default type on SPIR-V storage
buffers from float to uint. We could also alias the buffers, but it's
simpler for now to just use uint. While we are at it, abstract the code
to avoid repetition.
This commit is contained in:
ReinUsesLisp 2020-01-25 21:03:02 -03:00
parent 05df4a8c94
commit d95d4ac843
5 changed files with 86 additions and 39 deletions
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30
src/video_core/engines/shader_bytecode.h
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@ -227,6 +227,28 @@ enum class AtomicOp : u64 {
Exch = 8,
};
enum class GlobalAtomicOp : u64 {
Add = 0,
Min = 1,
Max = 2,
Inc = 3,
Dec = 4,
And = 5,
Or = 6,
Xor = 7,
Exch = 8,
SafeAdd = 10,
};
enum class GlobalAtomicType : u64 {
U32 = 0,
S32 = 1,
U64 = 2,
F32_FTZ_RN = 3,
F16x2_FTZ_RN = 4,
S64 = 5,
};
enum class UniformType : u64 {
UnsignedByte = 0,
SignedByte = 1,
@ -957,6 +979,12 @@ union Instruction {
BitField<46, 2, u64> cache_mode;
} stg;
union {
BitField<52, 4, GlobalAtomicOp> operation;
BitField<49, 3, GlobalAtomicType> type;
BitField<28, 20, s64> offset;
} atom;
union {
BitField<52, 4, AtomicOp> operation;
BitField<28, 2, AtomicType> type;
@ -1690,6 +1718,7 @@ public:
ST_S,
ST, // Store in generic memory
STG, // Store in global memory
ATOM, // Atomic operation on global memory
ATOMS, // Atomic operation on shared memory
AL2P, // Transforms attribute memory into physical memory
TEX,
@ -1994,6 +2023,7 @@ private:
INST("1110111101010---", Id::ST_L, Type::Memory, "ST_L"),
INST("101-------------", Id::ST, Type::Memory, "ST"),
INST("1110111011011---", Id::STG, Type::Memory, "STG"),
INST("11101101--------", Id::ATOM, Type::Memory, "ATOM"),
INST("11101100--------", Id::ATOMS, Type::Memory, "ATOMS"),
INST("1110111110100---", Id::AL2P, Type::Memory, "AL2P"),
INST("110000----111---", Id::TEX, Type::Texture, "TEX"),