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swiftshader
Commit c0cf68ba by Ben Clayton
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SpirvShader: Add EmitState

As we implement more complex control flow, we need to emit blocks with different active lane masks, and have finer control over block generation. Bug: b/128527271 Change-Id: Ica51bbea196b87ab442b394f0915e9a2cd375ac0 Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/27770 Presubmit-Ready: Ben Clayton <bclayton@google.com> Kokoro-Presubmit: kokoro <noreply+kokoro@google.com> Tested-by: 's avatarBen Clayton <bclayton@google.com> Reviewed-by: 's avatarChris Forbes <chrisforbes@google.com> Reviewed-by: 's avatarNicolas Capens <nicolascapens@google.com>
parent 3246ca29
Showing with 75 additions and 29 deletions
src/Pipeline/ComputeProgram.cpp
......@@ -119,7 +119,7 @@ namespace sw
auto localInvocationIndex = SIMD::Int(subgroupIndex * SIMD::Width) + SIMD::Int(0, 1, 2, 3);
// Disable lanes where (invocationIDs >= numInvocations)
routine.activeLaneMask = CmpLT(localInvocationIndex, SIMD::Int(numInvocations));
auto activeLaneMask = CmpLT(localInvocationIndex, SIMD::Int(numInvocations));
SIMD::Int localInvocationID[3];
{
......@@ -162,7 +162,7 @@ namespace sw
});
// Process numLanes of the workgroup.
shader->emit(&routine);
shader->emit(&routine, activeLaneMask);
}
}
......
src/Pipeline/PixelProgram.cpp
......@@ -33,7 +33,8 @@ namespace sw
routine.pushConstants = data + OFFSET(DrawData, pushConstants);
spirvShader->emit(&routine);
auto activeLaneMask = SIMD::Int(0xFFFFFFFF); // TODO: Control this.
spirvShader->emit(&routine, activeLaneMask);
spirvShader->emitEpilog(&routine);
for(int i = 0; i < RENDERTARGETS; i++)
......
src/Pipeline/SpirvID.hpp
......@@ -32,6 +32,7 @@ namespace sw
SpirvID() : id(0) {}
SpirvID(uint32_t id) : id(id) {}
bool operator == (const SpirvID<T>& rhs) const { return id == rhs.id; }
bool operator != (const SpirvID<T>& rhs) const { return id != rhs.id; }
bool operator < (const SpirvID<T>& rhs) const { return id < rhs.id; }
// value returns the numerical value of the identifier.
......
src/Pipeline/SpirvShader.hpp
......@@ -438,7 +438,7 @@ namespace sw
std::vector<InterfaceComponent> outputs;
void emitProlog(SpirvRoutine *routine) const;
void emit(SpirvRoutine *routine) const;
void emit(SpirvRoutine *routine, RValue<SIMD::Int> const &activeLaneMask) const;
void emitEpilog(SpirvRoutine *routine) const;
using BuiltInHash = std::hash<std::underlying_type<spv::BuiltIn>::type>;
......@@ -475,9 +475,6 @@ namespace sw
HandleMap<Block> blocks;
Block::ID mainBlockId; // Block of the entry point function.
void EmitBlock(SpirvRoutine *routine, Block const &block) const;
void EmitInstruction(SpirvRoutine *routine, InsnIterator insn) const;
// DeclareType creates a Type for the given OpTypeX instruction, storing
// it into the types map. It is called from the analysis pass (constructor).
void DeclareType(InsnIterator insn);
......@@ -531,26 +528,74 @@ namespace sw
SIMD::Int WalkAccessChain(Object::ID id, uint32_t numIndexes, uint32_t const *indexIds, SpirvRoutine *routine) const;
uint32_t WalkLiteralAccessChain(Type::ID id, uint32_t numIndexes, uint32_t const *indexes) const;
// EmitState holds control-flow state for the emit() pass.
class EmitState
{
public:
RValue<SIMD::Int> activeLaneMask() const
{
ASSERT(activeLaneMaskValue != nullptr);
return RValue<SIMD::Int>(activeLaneMaskValue);
}
void setActiveLaneMask(RValue<SIMD::Int> mask)
{
activeLaneMaskValue = mask.value;
}
// Add a new active lane mask edge from the current block to out.
// The edge mask value will be (mask AND activeLaneMaskValue).
// If multiple active lane masks are added for the same edge, then
// they will be ORed together.
void addOutputActiveLaneMaskEdge(Block::ID out, RValue<SIMD::Int> mask);
// Add a new active lane mask for the edge from -> to.
// If multiple active lane masks are added for the same edge, then
// they will be ORed together.
void addActiveLaneMaskEdge(Block::ID from, Block::ID to, RValue<SIMD::Int> mask);
// Lookup the active lane mask for the edge from -> to.
// Asserts if the edge does not exist.
RValue<SIMD::Int> getActiveLaneMaskEdge(Block::ID from, Block::ID to);
SpirvRoutine *routine = nullptr; // The current routine being built.
rr::Value *activeLaneMaskValue = nullptr; // The current active lane mask.
Block::ID currentBlock; // The current block being built.
Block::Set visited; // Blocks already built.
std::unordered_map<Block::Edge, RValue<SIMD::Int>, Block::Edge::Hash> edgeActiveLaneMasks;
};
// EmitResult is an enumerator of result values from the Emit functions.
enum class EmitResult
{
Continue, // No termination instructions.
Terminator, // Reached a termination instruction.
};
void EmitBlock(Block::ID id, EmitState *state) const;
void EmitInstructions(InsnIterator begin, InsnIterator end, EmitState *state) const;
EmitResult EmitInstruction(InsnIterator insn, EmitState *state) const;
// Emit pass instructions:
void EmitVariable(InsnIterator insn, SpirvRoutine *routine) const;
void EmitLoad(InsnIterator insn, SpirvRoutine *routine) const;
void EmitStore(InsnIterator insn, SpirvRoutine *routine) const;
void EmitAccessChain(InsnIterator insn, SpirvRoutine *routine) const;
void EmitCompositeConstruct(InsnIterator insn, SpirvRoutine *routine) const;
void EmitCompositeInsert(InsnIterator insn, SpirvRoutine *routine) const;
void EmitCompositeExtract(InsnIterator insn, SpirvRoutine *routine) const;
void EmitVectorShuffle(InsnIterator insn, SpirvRoutine *routine) const;
void EmitVectorTimesScalar(InsnIterator insn, SpirvRoutine *routine) const;
void EmitVectorExtractDynamic(InsnIterator insn, SpirvRoutine *routine) const;
void EmitVectorInsertDynamic(InsnIterator insn, SpirvRoutine *routine) const;
void EmitUnaryOp(InsnIterator insn, SpirvRoutine *routine) const;
void EmitBinaryOp(InsnIterator insn, SpirvRoutine *routine) const;
void EmitDot(InsnIterator insn, SpirvRoutine *routine) const;
void EmitSelect(InsnIterator insn, SpirvRoutine *routine) const;
void EmitExtendedInstruction(InsnIterator insn, SpirvRoutine *routine) const;
void EmitAny(InsnIterator insn, SpirvRoutine *routine) const;
void EmitAll(InsnIterator insn, SpirvRoutine *routine) const;
void EmitBranch(InsnIterator insn, SpirvRoutine *routine) const;
EmitResult EmitVariable(InsnIterator insn, EmitState *state) const;
EmitResult EmitLoad(InsnIterator insn, EmitState *state) const;
EmitResult EmitStore(InsnIterator insn, EmitState *state) const;
EmitResult EmitAccessChain(InsnIterator insn, EmitState *state) const;
EmitResult EmitCompositeConstruct(InsnIterator insn, EmitState *state) const;
EmitResult EmitCompositeInsert(InsnIterator insn, EmitState *state) const;
EmitResult EmitCompositeExtract(InsnIterator insn, EmitState *state) const;
EmitResult EmitVectorShuffle(InsnIterator insn, EmitState *state) const;
EmitResult EmitVectorTimesScalar(InsnIterator insn, EmitState *state) const;
EmitResult EmitVectorExtractDynamic(InsnIterator insn, EmitState *state) const;
EmitResult EmitVectorInsertDynamic(InsnIterator insn, EmitState *state) const;
EmitResult EmitUnaryOp(InsnIterator insn, EmitState *state) const;
EmitResult EmitBinaryOp(InsnIterator insn, EmitState *state) const;
EmitResult EmitDot(InsnIterator insn, EmitState *state) const;
EmitResult EmitSelect(InsnIterator insn, EmitState *state) const;
EmitResult EmitExtendedInstruction(InsnIterator insn, EmitState *state) const;
EmitResult EmitAny(InsnIterator insn, EmitState *state) const;
EmitResult EmitAll(InsnIterator insn, EmitState *state) const;
EmitResult EmitBranch(InsnIterator insn, EmitState *state) const;
// OpcodeName() returns the name of the opcode op.
// If NDEBUG is defined, then OpcodeName() will only return the numerical code.
......@@ -579,8 +624,6 @@ namespace sw
Value inputs = Value{MAX_INTERFACE_COMPONENTS};
Value outputs = Value{MAX_INTERFACE_COMPONENTS};
SIMD::Int activeLaneMask = SIMD::Int(0xFFFFFFFF);
std::array<Pointer<Byte>, vk::MAX_BOUND_DESCRIPTOR_SETS> descriptorSets;
Pointer<Byte> pushConstants;
......
src/Pipeline/VertexProgram.cpp
......@@ -74,7 +74,8 @@ namespace sw
As<Float4>(Int4(index) + Int4(0, 1, 2, 3));
}
spirvShader->emit(&routine);
auto activeLaneMask = SIMD::Int(0xFFFFFFFF); // TODO: Control this.
spirvShader->emit(&routine, activeLaneMask);
if(currentLabel != -1)
{
......
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