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Much like arrays, the SPIR-V writer cannot cope with dynamic indexing of matrices. Fixed: tint:825 Change-Id: Ia111f15e0cf6fbd441861a4b3455a33b82b692ab Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/51781 Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: David Neto <dneto@google.com> Reviewed-by: James Price <jrprice@google.com> Commit-Queue: Ben Clayton <bclayton@google.com> Auto-Submit: Ben Clayton <bclayton@google.com>
49 lines
1.6 KiB
C++
49 lines
1.6 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_VAR_FOR_DYNAMIC_INDEX_H_
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#define SRC_TRANSFORM_VAR_FOR_DYNAMIC_INDEX_H_
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#include <string>
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#include <unordered_map>
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#include "src/transform/transform.h"
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namespace tint {
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namespace transform {
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/// A transform that extracts array and matrix values that are dynamically
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/// indexed to a temporary `var` local before performing the index. This
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/// transform is used by the SPIR-V writer as there is no SPIR-V instruction
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/// that can dynamically index a non-pointer composite.
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class VarForDynamicIndex : public Transform {
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public:
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/// Constructor
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VarForDynamicIndex();
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/// Destructor
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~VarForDynamicIndex() override;
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/// Runs the transform on `program`, returning the transformation result.
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/// @param program the source program to transform
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/// @param data optional extra transform-specific input data
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/// @returns the transformation result
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Output Run(const Program* program, const DataMap& data = {}) override;
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};
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} // namespace transform
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} // namespace tint
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#endif // SRC_TRANSFORM_VAR_FOR_DYNAMIC_INDEX_H_
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