mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-07-06 13:15:59 +00:00
baaf989452
This Cl adds function variables to the SPIR-V output. This requires some refactoring to split function instructions and variables apart in the builder. Bug: tint:5 Change-Id: I4d0045f5a02311cf9a2803929c66c648278e3734 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/18600 Reviewed-by: David Neto <dneto@google.com>
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
// Copyright 2020 The Tint Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef SRC_WRITER_SPIRV_FUNCTION_H_
|
|
#define SRC_WRITER_SPIRV_FUNCTION_H_
|
|
|
|
#include <vector>
|
|
|
|
#include "spirv/unified1/spirv.hpp11"
|
|
#include "src/writer/spirv/instruction.h"
|
|
#include "src/writer/spirv/operand.h"
|
|
|
|
namespace tint {
|
|
namespace writer {
|
|
namespace spirv {
|
|
|
|
/// A SPIR-V function
|
|
class Function {
|
|
public:
|
|
/// Constructor for testing purposes
|
|
/// This creates a bad declaration, so won't generate correct SPIR-V
|
|
Function();
|
|
|
|
/// Constructor
|
|
/// @param declaration the function declaration
|
|
/// @param label_op the operand for the initial function label
|
|
/// @param params the function parameters
|
|
Function(const Instruction& declaration,
|
|
const Operand& label_op,
|
|
const std::vector<Instruction>& params);
|
|
/// Copy constructor
|
|
/// @param other the function to copy
|
|
Function(const Function& other) = default;
|
|
~Function();
|
|
|
|
/// Iterates over the function call the cb on each instruction
|
|
/// @param cb the callback to call
|
|
void iterate(std::function<void(const Instruction&)> cb) const;
|
|
|
|
/// @returns the declaration
|
|
const Instruction& declaration() const { return declaration_; }
|
|
|
|
/// Adds an instruction to the instruction list
|
|
/// @param op the op to set
|
|
/// @param operands the operands for the instruction
|
|
void push_inst(spv::Op op, const std::vector<Operand>& operands) {
|
|
instructions_.push_back(Instruction{op, operands});
|
|
}
|
|
/// @returns the instruction list
|
|
const std::vector<Instruction>& instructions() const { return instructions_; }
|
|
|
|
/// Adds a variable to the variable list
|
|
/// @param operands the operands for the variable
|
|
void push_var(const std::vector<Operand>& operands) {
|
|
vars_.push_back(Instruction{spv::Op::OpVariable, operands});
|
|
}
|
|
/// @returns the variable list
|
|
const std::vector<Instruction>& variables() const { return vars_; }
|
|
|
|
/// @returns the word length of the function
|
|
uint32_t word_length() const {
|
|
// 1 for the Label and 1 for the FunctionEnd
|
|
uint32_t size = 2 + declaration_.word_length();
|
|
|
|
for (const auto& param : params_) {
|
|
size += param.word_length();
|
|
}
|
|
for (const auto& var : vars_) {
|
|
size += var.word_length();
|
|
}
|
|
for (const auto& inst : instructions_) {
|
|
size += inst.word_length();
|
|
}
|
|
return size;
|
|
}
|
|
|
|
private:
|
|
Instruction declaration_;
|
|
Operand label_op_;
|
|
std::vector<Instruction> params_;
|
|
std::vector<Instruction> vars_;
|
|
std::vector<Instruction> instructions_;
|
|
};
|
|
|
|
} // namespace spirv
|
|
} // namespace writer
|
|
} // namespace tint
|
|
|
|
#endif // SRC_WRITER_SPIRV_FUNCTION_H_
|