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/* Copyright (c) 2024-2025 LunarG, Inc.
*
* 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.
*/
#pragma once
#include <stdint.h>
#include "pass.h"
#include "interface.h"
namespace gpuav {
namespace spirv {
// This pass has no linking, it is all done inplace at runtime
static const OfflineModule kNullOffline{nullptr, 0};
struct Type;
// Create a pass to instrument NonSemantic.DebugPrintf (GL_EXT_debug_printf) instructions
class DebugPrintfPass : public Pass {
public:
DebugPrintfPass(Module& module, std::vector<InternalOnlyDebugPrintf>& debug_printf, uint32_t binding_slot = 0)
: Pass(module, kNullOffline), intenral_only_debug_printf_(debug_printf), binding_slot_(binding_slot) {}
const char* Name() const final { return "DebugPrintfPass"; }
bool Instrument() final;
void PrintDebugInfo() const final;
private:
// This is metadata tied to a single instruction gathered during RequiresInstrumentation() to be used later
struct InstructionMeta {
const Instruction* target_instruction = nullptr;
};
// Once we want to create a function, we need to gather temporary data while building the parameters
struct ParamMeta {
// Used to detect where 64-bit floats are
uint32_t double_bitmask = 0;
// Used to detect where signed ints are 8 or 16 bits
uint32_t signed_8_bitmask = 0;
uint32_t signed_16_bitmask = 0;
// Count number of parameters the CPU will need to print out
// This expands vectors and accounts for 64-bit parameters
uint32_t expanded_parameter_count = 0;
};
bool RequiresInstrumentation(const Instruction& inst, InstructionMeta& meta);
void CreateFunctionCall(BasicBlock& block, InstructionIt* inst_it, const InstructionMeta& meta);
void CreateFunctionParams(uint32_t argument_id, const Type& argument_type, std::vector<uint32_t>& params, BasicBlock& block,
InstructionIt* inst_it, ParamMeta& p_meta);
uint32_t CreateDescriptorSet();
void CreateBufferWriteFunction(uint32_t argument_count, uint32_t function_id, uint32_t output_buffer_variable_id);
bool Validate(const Function& current_function, const InstructionMeta& meta);
// for debugging instrumented shaders
std::vector<InternalOnlyDebugPrintf>& intenral_only_debug_printf_;
const uint32_t binding_slot_;
uint32_t ext_import_id_ = 0;
// <number of arguments in the function call, function id>
vvl::unordered_map<uint32_t, uint32_t> function_id_map_;
uint32_t GetLinkFunctionId(uint32_t argument_count);
};
} // namespace spirv
} // namespace gpuav
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