101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
// Copyright 2020 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_TINT_WRITER_HLSL_GENERATOR_H_
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#define SRC_TINT_WRITER_HLSL_GENERATOR_H_
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#include <memory>
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#include <string>
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#include <unordered_set>
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#include <utility>
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#include <vector>
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#include "src/tint/ast/pipeline_stage.h"
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#include "src/tint/sem/binding_point.h"
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#include "src/tint/writer/array_length_from_uniform_options.h"
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#include "src/tint/writer/text.h"
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// Forward declarations
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namespace tint {
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class Program;
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} // namespace tint
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namespace tint::writer::hlsl {
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/// Configuration options used for generating HLSL.
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struct Options {
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/// Constructor
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Options();
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/// Destructor
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~Options();
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/// Copy constructor
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Options(const Options&);
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/// Copy assignment
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/// @returns this Options
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Options& operator=(const Options&);
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/// The binding point to use for information passed via root constants.
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sem::BindingPoint root_constant_binding_point;
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/// Set to `true` to disable workgroup memory zero initialization
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bool disable_workgroup_init = false;
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/// Set to 'true' to generates binding mappings for external textures
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bool generate_external_texture_bindings = false;
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/// Options used to specify a mapping of binding points to indices into a UBO
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/// from which to load buffer sizes.
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ArrayLengthFromUniformOptions array_length_from_uniform = {};
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// NOTE: Update src/tint/fuzzers/data_builder.h when adding or changing any
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// struct members.
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};
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/// The result produced when generating HLSL.
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struct Result {
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/// Constructor
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Result();
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/// Destructor
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~Result();
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/// Copy constructor
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Result(const Result&);
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/// True if generation was successful.
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bool success = false;
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/// The errors generated during code generation, if any.
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std::string error;
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/// The generated HLSL.
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std::string hlsl = "";
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/// The list of entry points in the generated HLSL.
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std::vector<std::pair<std::string, ast::PipelineStage>> entry_points;
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/// Indices into the array_length_from_uniform binding that are statically
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/// used.
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std::unordered_set<uint32_t> used_array_length_from_uniform_indices;
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};
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/// Generate HLSL for a program, according to a set of configuration options.
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/// The result will contain the HLSL, as well as success status and diagnostic
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/// information.
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/// @param program the program to translate to HLSL
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/// @param options the configuration options to use when generating HLSL
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/// @returns the resulting HLSL and supplementary information
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Result Generate(const Program* program, const Options& options);
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} // namespace tint::writer::hlsl
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#endif // SRC_TINT_WRITER_HLSL_GENERATOR_H_
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