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shader: Implement SHFL

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This commit is contained in:
ameerj 2021-03-25 11:31:37 -04:00
parent 49e87ea8ab
commit 32c5483beb
16 changed files with 284 additions and 69 deletions
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3
src/shader_recompiler/CMakeLists.txt
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@ -16,7 +16,7 @@ add_library(shader_recompiler STATIC
backend/spirv/emit_spirv_select.cpp
backend/spirv/emit_spirv_special.cpp
backend/spirv/emit_spirv_undefined.cpp
backend/spirv/emit_spirv_vote.cpp
backend/spirv/emit_spirv_warp.cpp
environment.h
exception.h
file_environment.cpp
@ -125,6 +125,7 @@ add_library(shader_recompiler STATIC
frontend/maxwell/translate/impl/texture_fetch.cpp
frontend/maxwell/translate/impl/texture_fetch_swizzled.cpp
frontend/maxwell/translate/impl/vote.cpp
frontend/maxwell/translate/impl/warp_shuffle.cpp
frontend/maxwell/translate/translate.cpp
frontend/maxwell/translate/translate.h
ir_opt/collect_shader_info_pass.cpp

3
src/shader_recompiler/backend/spirv/emit_context.cpp
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@ -274,7 +274,8 @@ void EmitContext::DefineInputs(const Info& info) {
if (info.uses_local_invocation_id) {
local_invocation_id = DefineInput(*this, U32[3], spv::BuiltIn::LocalInvocationId);
}
if (profile.warp_size_potentially_larger_than_guest && info.uses_subgroup_vote) {
if (info.uses_subgroup_invocation_id ||
(profile.warp_size_potentially_larger_than_guest && info.uses_subgroup_vote)) {
subgroup_local_invocation_id =
DefineInput(*this, U32[1], spv::BuiltIn::SubgroupLocalInvocationId);
}

6
src/shader_recompiler/backend/spirv/emit_spirv.cpp
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@ -224,7 +224,7 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
ctx.AddExtension("SPV_KHR_shader_draw_parameters");
ctx.AddCapability(spv::Capability::DrawParameters);
}
if (info.uses_subgroup_vote && profile.support_vote) {
if ((info.uses_subgroup_vote || info.uses_subgroup_invocation_id) && profile.support_vote) {
ctx.AddExtension("SPV_KHR_shader_ballot");
ctx.AddCapability(spv::Capability::SubgroupBallotKHR);
if (!profile.warp_size_potentially_larger_than_guest) {
@ -315,4 +315,8 @@ void EmitGetSparseFromOp(EmitContext&) {
throw LogicError("Unreachable instruction");
}
void EmitGetInBoundsFromOp(EmitContext&) {
throw LogicError("Unreachable instruction");
}
} // namespace Shader::Backend::SPIRV

9
src/shader_recompiler/backend/spirv/emit_spirv.h
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@ -158,6 +158,7 @@ void EmitGetSignFromOp(EmitContext& ctx);
void EmitGetCarryFromOp(EmitContext& ctx);
void EmitGetOverflowFromOp(EmitContext& ctx);
void EmitGetSparseFromOp(EmitContext& ctx);
void EmitGetInBoundsFromOp(EmitContext& ctx);
Id EmitFPAbs16(EmitContext& ctx, Id value);
Id EmitFPAbs32(EmitContext& ctx, Id value);
Id EmitFPAbs64(EmitContext& ctx, Id value);
@ -355,5 +356,13 @@ Id EmitVoteAll(EmitContext& ctx, Id pred);
Id EmitVoteAny(EmitContext& ctx, Id pred);
Id EmitVoteEqual(EmitContext& ctx, Id pred);
Id EmitSubgroupBallot(EmitContext& ctx, Id pred);
Id EmitShuffleIndex(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask);
Id EmitShuffleUp(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask);
Id EmitShuffleDown(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask);
Id EmitShuffleButterfly(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask);
} // namespace Shader::Backend::SPIRV

58
src/shader_recompiler/backend/spirv/emit_spirv_vote.cpp
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@ -1,58 +0,0 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "shader_recompiler/backend/spirv/emit_spirv.h"
namespace Shader::Backend::SPIRV {
namespace {
Id LargeWarpBallot(EmitContext& ctx, Id ballot) {
const Id shift{ctx.Constant(ctx.U32[1], 5)};
const Id local_index{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
return ctx.OpVectorExtractDynamic(ctx.U32[1], ballot, local_index);
}
} // Anonymous namespace
Id EmitVoteAll(EmitContext& ctx, Id pred) {
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpSubgroupAllKHR(ctx.U1, pred);
}
const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)};
return ctx.OpIEqual(ctx.U1, lhs, active_mask);
}
Id EmitVoteAny(EmitContext& ctx, Id pred) {
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpSubgroupAnyKHR(ctx.U1, pred);
}
const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)};
return ctx.OpINotEqual(ctx.U1, lhs, ctx.u32_zero_value);
}
Id EmitVoteEqual(EmitContext& ctx, Id pred) {
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpSubgroupAllEqualKHR(ctx.U1, pred);
}
const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
const Id lhs{ctx.OpBitwiseXor(ctx.U32[1], ballot, active_mask)};
return ctx.OpLogicalOr(ctx.U1, ctx.OpIEqual(ctx.U1, lhs, ctx.u32_zero_value),
ctx.OpIEqual(ctx.U1, lhs, active_mask));
}
Id EmitSubgroupBallot(EmitContext& ctx, Id pred) {
const Id ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], pred)};
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpCompositeExtract(ctx.U32[1], ballot, 0U);
}
return LargeWarpBallot(ctx, ballot);
}
} // namespace Shader::Backend::SPIRV

135
src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp Normal file
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@ -0,0 +1,135 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "shader_recompiler/backend/spirv/emit_spirv.h"
namespace Shader::Backend::SPIRV {
namespace {
Id LargeWarpBallot(EmitContext& ctx, Id ballot) {
const Id shift{ctx.Constant(ctx.U32[1], 5)};
const Id local_index{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
return ctx.OpVectorExtractDynamic(ctx.U32[1], ballot, local_index);
}
void SetInBoundsFlag(IR::Inst* inst, Id result) {
IR::Inst* const in_bounds{inst->GetAssociatedPseudoOperation(IR::Opcode::GetInBoundsFromOp)};
if (!in_bounds) {
return;
}
in_bounds->SetDefinition(result);
in_bounds->Invalidate();
}
Id ComputeMinThreadId(EmitContext& ctx, Id thread_id, Id segmentation_mask) {
return ctx.OpBitwiseAnd(ctx.U32[1], thread_id, segmentation_mask);
}
Id ComputeMaxThreadId(EmitContext& ctx, Id min_thread_id, Id clamp, Id not_seg_mask) {
return ctx.OpBitwiseOr(ctx.U32[1], min_thread_id,
ctx.OpBitwiseAnd(ctx.U32[1], clamp, not_seg_mask));
}
Id GetMaxThreadId(EmitContext& ctx, Id thread_id, Id clamp, Id segmentation_mask) {
const Id not_seg_mask{ctx.OpNot(ctx.U32[1], segmentation_mask)};
const Id min_thread_id{ComputeMinThreadId(ctx, thread_id, segmentation_mask)};
return ComputeMaxThreadId(ctx, min_thread_id, clamp, not_seg_mask);
}
Id SelectValue(EmitContext& ctx, Id in_range, Id value, Id src_thread_id) {
return ctx.OpSelect(ctx.U32[1], in_range,
ctx.OpSubgroupReadInvocationKHR(ctx.U32[1], value, src_thread_id), value);
}
} // Anonymous namespace
Id EmitVoteAll(EmitContext& ctx, Id pred) {
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpSubgroupAllKHR(ctx.U1, pred);
}
const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)};
return ctx.OpIEqual(ctx.U1, lhs, active_mask);
}
Id EmitVoteAny(EmitContext& ctx, Id pred) {
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpSubgroupAnyKHR(ctx.U1, pred);
}
const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)};
return ctx.OpINotEqual(ctx.U1, lhs, ctx.u32_zero_value);
}
Id EmitVoteEqual(EmitContext& ctx, Id pred) {
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpSubgroupAllEqualKHR(ctx.U1, pred);
}
const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
const Id lhs{ctx.OpBitwiseXor(ctx.U32[1], ballot, active_mask)};
return ctx.OpLogicalOr(ctx.U1, ctx.OpIEqual(ctx.U1, lhs, ctx.u32_zero_value),
ctx.OpIEqual(ctx.U1, lhs, active_mask));
}
Id EmitSubgroupBallot(EmitContext& ctx, Id pred) {
const Id ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], pred)};
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return ctx.OpCompositeExtract(ctx.U32[1], ballot, 0U);
}
return LargeWarpBallot(ctx, ballot);
}
Id EmitShuffleIndex(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask) {
const Id not_seg_mask{ctx.OpNot(ctx.U32[1], segmentation_mask)};
const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
const Id min_thread_id{ComputeMinThreadId(ctx, thread_id, segmentation_mask)};
const Id max_thread_id{ComputeMaxThreadId(ctx, min_thread_id, clamp, not_seg_mask)};
const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], index, not_seg_mask)};
const Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], lhs, min_thread_id)};
const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
}
Id EmitShuffleUp(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask) {
const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
const Id src_thread_id{ctx.OpISub(ctx.U32[1], thread_id, index)};
const Id in_range{ctx.OpSGreaterThanEqual(ctx.U1, src_thread_id, max_thread_id)};
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
}
Id EmitShuffleDown(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask) {
const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
const Id src_thread_id{ctx.OpIAdd(ctx.U32[1], thread_id, index)};
const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
}
Id EmitShuffleButterfly(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask) {
const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
const Id src_thread_id{ctx.OpBitwiseXor(ctx.U32[1], thread_id, index)};
const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
}
} // namespace Shader::Backend::SPIRV

23
src/shader_recompiler/frontend/ir/ir_emitter.cpp
View File

@ -374,6 +374,10 @@ U1 IREmitter::GetSparseFromOp(const Value& op) {
return Inst<U1>(Opcode::GetSparseFromOp, op);
}
U1 IREmitter::GetInBoundsFromOp(const Value& op) {
return Inst<U1>(Opcode::GetInBoundsFromOp, op);
}
F16F32F64 IREmitter::FPAdd(const F16F32F64& a, const F16F32F64& b, FpControl control) {
if (a.Type() != b.Type()) {
throw InvalidArgument("Mismatching types {} and {}", a.Type(), b.Type());
@ -1486,4 +1490,23 @@ U32 IREmitter::SubgroupBallot(const U1& value) {
return Inst<U32>(Opcode::SubgroupBallot, value);
}
U32 IREmitter::ShuffleIndex(const IR::U32& value, const IR::U32& index, const IR::U32& clamp,
const IR::U32& seg_mask) {
return Inst<U32>(Opcode::ShuffleIndex, value, index, clamp, seg_mask);
}
U32 IREmitter::ShuffleUp(const IR::U32& value, const IR::U32& index, const IR::U32& clamp,
const IR::U32& seg_mask) {
return Inst<U32>(Opcode::ShuffleUp, value, index, clamp, seg_mask);
}
U32 IREmitter::ShuffleDown(const IR::U32& value, const IR::U32& index, const IR::U32& clamp,
const IR::U32& seg_mask) {
return Inst<U32>(Opcode::ShuffleDown, value, index, clamp, seg_mask);
}
U32 IREmitter::ShuffleButterfly(const IR::U32& value, const IR::U32& index, const IR::U32& clamp,
const IR::U32& seg_mask) {
return Inst<U32>(Opcode::ShuffleButterfly, value, index, clamp, seg_mask);
}
} // namespace Shader::IR

12
src/shader_recompiler/frontend/ir/ir_emitter.h
View File

@ -104,6 +104,7 @@ public:
[[nodiscard]] U1 GetCarryFromOp(const Value& op);
[[nodiscard]] U1 GetOverflowFromOp(const Value& op);
[[nodiscard]] U1 GetSparseFromOp(const Value& op);
[[nodiscard]] U1 GetInBoundsFromOp(const Value& op);
[[nodiscard]] Value CompositeConstruct(const Value& e1, const Value& e2);
[[nodiscard]] Value CompositeConstruct(const Value& e1, const Value& e2, const Value& e3);
@ -147,7 +148,8 @@ public:
[[nodiscard]] F32F64 FPRecipSqrt(const F32F64& value);
[[nodiscard]] F32 FPSqrt(const F32& value);
[[nodiscard]] F16F32F64 FPSaturate(const F16F32F64& value);
[[nodiscard]] F16F32F64 FPClamp(const F16F32F64& value, const F16F32F64& min_value, const F16F32F64& max_value);
[[nodiscard]] F16F32F64 FPClamp(const F16F32F64& value, const F16F32F64& min_value,
const F16F32F64& max_value);
[[nodiscard]] F16F32F64 FPRoundEven(const F16F32F64& value, FpControl control = {});
[[nodiscard]] F16F32F64 FPFloor(const F16F32F64& value, FpControl control = {});
[[nodiscard]] F16F32F64 FPCeil(const F16F32F64& value, FpControl control = {});
@ -242,6 +244,14 @@ public:
[[nodiscard]] U1 VoteAny(const U1& value);
[[nodiscard]] U1 VoteEqual(const U1& value);
[[nodiscard]] U32 SubgroupBallot(const U1& value);
[[nodiscard]] U32 ShuffleIndex(const IR::U32& value, const IR::U32& index, const IR::U32& clamp,
const IR::U32& seg_mask);
[[nodiscard]] U32 ShuffleUp(const IR::U32& value, const IR::U32& index, const IR::U32& clamp,
const IR::U32& seg_mask);
[[nodiscard]] U32 ShuffleDown(const IR::U32& value, const IR::U32& index, const IR::U32& clamp,
const IR::U32& seg_mask);
[[nodiscard]] U32 ShuffleButterfly(const IR::U32& value, const IR::U32& index,
const IR::U32& clamp, const IR::U32& seg_mask);
private:
IR::Block::iterator insertion_point;

12
src/shader_recompiler/frontend/ir/microinstruction.cpp
View File

@ -89,6 +89,7 @@ bool Inst::IsPseudoInstruction() const noexcept {
case Opcode::GetCarryFromOp:
case Opcode::GetOverflowFromOp:
case Opcode::GetSparseFromOp:
case Opcode::GetInBoundsFromOp:
return true;
default:
return false;
@ -123,6 +124,9 @@ Inst* Inst::GetAssociatedPseudoOperation(IR::Opcode opcode) {
case Opcode::GetSparseFromOp:
CheckPseudoInstruction(associated_insts->sparse_inst, Opcode::GetSparseFromOp);
return associated_insts->sparse_inst;
case Opcode::GetInBoundsFromOp:
CheckPseudoInstruction(associated_insts->in_bounds_inst, Opcode::GetInBoundsFromOp);
return associated_insts->in_bounds_inst;
default:
throw InvalidArgument("{} is not a pseudo-instruction", opcode);
}
@ -262,6 +266,10 @@ void Inst::Use(const Value& value) {
AllocAssociatedInsts(assoc_inst);
SetPseudoInstruction(assoc_inst->sparse_inst, this);
break;
case Opcode::GetInBoundsFromOp:
AllocAssociatedInsts(assoc_inst);
SetPseudoInstruction(assoc_inst->in_bounds_inst, this);
break;
default:
break;
}
@ -289,6 +297,10 @@ void Inst::UndoUse(const Value& value) {
AllocAssociatedInsts(assoc_inst);
RemovePseudoInstruction(assoc_inst->overflow_inst, Opcode::GetOverflowFromOp);
break;
case Opcode::GetInBoundsFromOp:
AllocAssociatedInsts(assoc_inst);
RemovePseudoInstruction(assoc_inst->in_bounds_inst, Opcode::GetInBoundsFromOp);
break;
default:
break;
}

1
src/shader_recompiler/frontend/ir/microinstruction.h
View File

@ -134,6 +134,7 @@ static_assert(sizeof(Inst) <= 128, "Inst size unintentionally increased");
struct AssociatedInsts {
union {
Inst* in_bounds_inst;
Inst* sparse_inst;
Inst* zero_inst{};
};

7
src/shader_recompiler/frontend/ir/opcodes.inc
View File

@ -159,6 +159,7 @@ OPCODE(GetSignFromOp, U1, Opaq
OPCODE(GetCarryFromOp, U1, Opaque, )
OPCODE(GetOverflowFromOp, U1, Opaque, )
OPCODE(GetSparseFromOp, U1, Opaque, )
OPCODE(GetInBoundsFromOp, U1, Opaque, )
// Floating-point operations
OPCODE(FPAbs16, F16, F16, )
@ -363,8 +364,12 @@ OPCODE(ImageSampleExplicitLod, F32x4, U32,
OPCODE(ImageSampleDrefImplicitLod, F32, U32, Opaque, F32, Opaque, Opaque, )
OPCODE(ImageSampleDrefExplicitLod, F32, U32, Opaque, F32, Opaque, Opaque, )
// Vote operations
// Warp operations
OPCODE(VoteAll, U1, U1, )
OPCODE(VoteAny, U1, U1, )
OPCODE(VoteEqual, U1, U1, )
OPCODE(SubgroupBallot, U32, U1, )
OPCODE(ShuffleIndex, U32, U32, U32, U32, U32, )
OPCODE(ShuffleUp, U32, U32, U32, U32, U32, )
OPCODE(ShuffleDown, U32, U32, U32, U32, U32, )
OPCODE(ShuffleButterfly, U32, U32, U32, U32, U32, )

4
src/shader_recompiler/frontend/maxwell/translate/impl/integer_scaled_add.cpp
View File

@ -53,8 +53,8 @@ void TranslatorVisitor::ISCADD_reg(u64 insn) {
ISCADD(*this, insn, GetReg20(insn));
}
void TranslatorVisitor::ISCADD_cbuf(u64) {
throw NotImplementedException("ISCADD (cbuf)");
void TranslatorVisitor::ISCADD_cbuf(u64 insn) {
ISCADD(*this, insn, GetCbuf(insn));
}
void TranslatorVisitor::ISCADD_imm(u64 insn) {

4
src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
View File

@ -301,10 +301,6 @@ void TranslatorVisitor::SETLMEMBASE(u64) {
ThrowNotImplemented(Opcode::SETLMEMBASE);
}
void TranslatorVisitor::SHFL(u64) {
ThrowNotImplemented(Opcode::SHFL);
}
void TranslatorVisitor::SSY() {
// SSY is a no-op
}

69
src/shader_recompiler/frontend/maxwell/translate/impl/warp_shuffle.cpp Normal file
View File

@ -0,0 +1,69 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <optional>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
namespace Shader::Maxwell {
namespace {
enum class ShuffleMode : u64 {
IDX,
UP,
DOWN,
BFLY,
};
[[nodiscard]] IR::U32 ShuffleOperation(IR::IREmitter& ir, const IR::U32& value,
const IR::U32& index, const IR::U32& mask,
ShuffleMode shfl_op) {
const IR::U32 clamp{ir.BitFieldExtract(mask, ir.Imm32(0), ir.Imm32(5))};
const IR::U32 seg_mask{ir.BitFieldExtract(mask, ir.Imm32(8), ir.Imm32(5))};
switch (shfl_op) {
case ShuffleMode::IDX:
return ir.ShuffleIndex(value, index, clamp, seg_mask);
case ShuffleMode::UP:
return ir.ShuffleUp(value, index, clamp, seg_mask);
case ShuffleMode::DOWN:
return ir.ShuffleDown(value, index, clamp, seg_mask);
case ShuffleMode::BFLY:
return ir.ShuffleButterfly(value, index, clamp, seg_mask);
default:
throw NotImplementedException("Invalid SHFL op {}", shfl_op);
}
}
void Shuffle(TranslatorVisitor& v, u64 insn, const IR::U32& index, const IR::U32& mask) {
union {
u64 insn;
BitField<0, 8, IR::Reg> dest_reg;
BitField<8, 8, IR::Reg> src_reg;
BitField<30, 2, ShuffleMode> mode;
BitField<48, 3, IR::Pred> pred;
} const shfl{insn};
const IR::U32 result{ShuffleOperation(v.ir, v.X(shfl.src_reg), index, mask, shfl.mode)};
v.ir.SetPred(shfl.pred, v.ir.GetInBoundsFromOp(result));
v.X(shfl.dest_reg, result);
}
} // Anonymous namespace
void TranslatorVisitor::SHFL(u64 insn) {
union {
u64 insn;
BitField<20, 5, u64> src_a_imm;
BitField<28, 1, u64> src_a_flag;
BitField<29, 1, u64> src_b_flag;
BitField<34, 13, u64> src_b_imm;
} const flags{insn};
const IR::U32 src_a{flags.src_a_flag != 0 ? ir.Imm32(static_cast<u32>(flags.src_a_imm))
: GetReg20(insn)};
const IR::U32 src_b{flags.src_b_flag != 0 ? ir.Imm32(static_cast<u32>(flags.src_b_imm))
: GetReg39(insn)};
Shuffle(*this, insn, src_a, src_b);
}
} // namespace Shader::Maxwell

6
src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp
View File

@ -307,6 +307,12 @@ void VisitUsages(Info& info, IR::Inst& inst) {
case IR::Opcode::LocalInvocationId:
info.uses_local_invocation_id = true;
break;
case IR::Opcode::ShuffleIndex:
case IR::Opcode::ShuffleUp:
case IR::Opcode::ShuffleDown:
case IR::Opcode::ShuffleButterfly:
info.uses_subgroup_invocation_id = true;
break;
case IR::Opcode::GetCbufU8:
case IR::Opcode::GetCbufS8:
case IR::Opcode::GetCbufU16:

1
src/shader_recompiler/shader_info.h
View File

@ -56,6 +56,7 @@ struct Info {
bool uses_workgroup_id{};
bool uses_local_invocation_id{};
bool uses_subgroup_invocation_id{};
std::array<bool, 32> loads_generics{};
bool loads_position{};