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f9d19719fd
Polyfill this for HLSL using an atomic add with the operand negated. Fixed: tint:1130 Change-Id: Ifa32d58973f1b48593ec0f6320f47f4358a5a3a9 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/62760 Auto-Submit: James Price <jrprice@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Ben Clayton <bclayton@google.com> Reviewed-by: Ben Clayton <bclayton@google.com>
124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TRANSFORM_DECOMPOSE_MEMORY_ACCESS_H_
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#define SRC_TRANSFORM_DECOMPOSE_MEMORY_ACCESS_H_
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#include <string>
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#include "src/ast/internal_decoration.h"
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#include "src/transform/transform.h"
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namespace tint {
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// Forward declarations
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class CloneContext;
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namespace transform {
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/// DecomposeMemoryAccess is a transform used to replace storage and uniform
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/// buffer accesses with a combination of load, store or atomic functions on
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/// primitive types.
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class DecomposeMemoryAccess
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: public Castable<DecomposeMemoryAccess, Transform> {
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public:
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/// Intrinsic is an InternalDecoration that's used to decorate a stub function
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/// so that the HLSL transforms this into calls to
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/// `[RW]ByteAddressBuffer.Load[N]()` or `[RW]ByteAddressBuffer.Store[N]()`,
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/// with a possible cast.
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class Intrinsic : public Castable<Intrinsic, ast::InternalDecoration> {
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public:
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/// Intrinsic op
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enum class Op {
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kLoad,
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kStore,
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kAtomicLoad,
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kAtomicStore,
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kAtomicAdd,
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kAtomicSub,
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kAtomicMax,
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kAtomicMin,
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kAtomicAnd,
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kAtomicOr,
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kAtomicXor,
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kAtomicExchange,
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kAtomicCompareExchangeWeak,
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};
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/// Intrinsic data type
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enum class DataType {
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kU32,
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kF32,
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kI32,
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kVec2U32,
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kVec2F32,
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kVec2I32,
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kVec3U32,
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kVec3F32,
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kVec3I32,
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kVec4U32,
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kVec4F32,
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kVec4I32,
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};
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/// Constructor
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/// @param program_id the identifier of the program that owns this node
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/// @param o the op of the intrinsic
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/// @param sc the storage class of the buffer
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/// @param ty the data type of the intrinsic
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Intrinsic(ProgramID program_id, Op o, ast::StorageClass sc, DataType ty);
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/// Destructor
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~Intrinsic() override;
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/// @return a short description of the internal decoration which will be
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/// displayed as `[[internal(<name>)]]`
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std::string InternalName() const override;
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/// Performs a deep clone of this object using the CloneContext `ctx`.
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/// @param ctx the clone context
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/// @return the newly cloned object
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Intrinsic* Clone(CloneContext* ctx) const override;
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/// The op of the intrinsic
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Op const op;
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/// The storage class of the buffer this intrinsic operates on
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ast::StorageClass const storage_class;
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/// The type of the intrinsic
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DataType const type;
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};
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/// Constructor
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DecomposeMemoryAccess();
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/// Destructor
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~DecomposeMemoryAccess() override;
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protected:
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/// Runs the transform using the CloneContext built for transforming a
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/// program. Run() is responsible for calling Clone() on the CloneContext.
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/// @param ctx the CloneContext primed with the input program and
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/// ProgramBuilder
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/// @param inputs optional extra transform-specific input data
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/// @param outputs optional extra transform-specific output data
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void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) override;
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struct State;
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};
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} // namespace transform
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} // namespace tint
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#endif // SRC_TRANSFORM_DECOMPOSE_MEMORY_ACCESS_H_
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