From c67d64365a712830fe140dd36e24e2efd9b8a812 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Tue, 16 Feb 2021 20:52:12 -0300 Subject: shader: Remove old shader management --- src/video_core/shader/decode.cpp | 368 --------------------------------------- 1 file changed, 368 deletions(-) delete mode 100644 src/video_core/shader/decode.cpp (limited to 'src/video_core/shader/decode.cpp') diff --git a/src/video_core/shader/decode.cpp b/src/video_core/shader/decode.cpp deleted file mode 100644 index 6576d1208..000000000 --- a/src/video_core/shader/decode.cpp +++ /dev/null @@ -1,368 +0,0 @@ -// Copyright 2018 yuzu Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include -#include -#include - -#include - -#include "common/assert.h" -#include "common/common_types.h" -#include "video_core/engines/shader_bytecode.h" -#include "video_core/engines/shader_header.h" -#include "video_core/shader/control_flow.h" -#include "video_core/shader/memory_util.h" -#include "video_core/shader/node_helper.h" -#include "video_core/shader/shader_ir.h" - -namespace VideoCommon::Shader { - -using Tegra::Shader::Instruction; -using Tegra::Shader::OpCode; - -namespace { - -void DeduceTextureHandlerSize(VideoCore::GuestDriverProfile& gpu_driver, - const std::list& used_samplers) { - if (gpu_driver.IsTextureHandlerSizeKnown() || used_samplers.size() <= 1) { - return; - } - u32 count{}; - std::vector bound_offsets; - for (const auto& sampler : used_samplers) { - if (sampler.is_bindless) { - continue; - } - ++count; - bound_offsets.emplace_back(sampler.offset); - } - if (count > 1) { - gpu_driver.DeduceTextureHandlerSize(std::move(bound_offsets)); - } -} - -std::optional TryDeduceSamplerSize(const SamplerEntry& sampler_to_deduce, - VideoCore::GuestDriverProfile& gpu_driver, - const std::list& used_samplers) { - const u32 base_offset = sampler_to_deduce.offset; - u32 max_offset{std::numeric_limits::max()}; - for (const auto& sampler : used_samplers) { - if (sampler.is_bindless) { - continue; - } - if (sampler.offset > base_offset) { - max_offset = std::min(sampler.offset, max_offset); - } - } - if (max_offset == std::numeric_limits::max()) { - return std::nullopt; - } - return ((max_offset - base_offset) * 4) / gpu_driver.GetTextureHandlerSize(); -} - -} // Anonymous namespace - -class ASTDecoder { -public: - explicit ASTDecoder(ShaderIR& ir_) : ir(ir_) {} - - void operator()(ASTProgram& ast) { - ASTNode current = ast.nodes.GetFirst(); - while (current) { - Visit(current); - current = current->GetNext(); - } - } - - void operator()(ASTIfThen& ast) { - ASTNode current = ast.nodes.GetFirst(); - while (current) { - Visit(current); - current = current->GetNext(); - } - } - - void operator()(ASTIfElse& ast) { - ASTNode current = ast.nodes.GetFirst(); - while (current) { - Visit(current); - current = current->GetNext(); - } - } - - void operator()(ASTBlockEncoded& ast) {} - - void operator()(ASTBlockDecoded& ast) {} - - void operator()(ASTVarSet& ast) {} - - void operator()(ASTLabel& ast) {} - - void operator()(ASTGoto& ast) {} - - void operator()(ASTDoWhile& ast) { - ASTNode current = ast.nodes.GetFirst(); - while (current) { - Visit(current); - current = current->GetNext(); - } - } - - void operator()(ASTReturn& ast) {} - - void operator()(ASTBreak& ast) {} - - void Visit(ASTNode& node) { - std::visit(*this, *node->GetInnerData()); - if (node->IsBlockEncoded()) { - auto block = std::get_if(node->GetInnerData()); - NodeBlock bb = ir.DecodeRange(block->start, block->end); - node->TransformBlockEncoded(std::move(bb)); - } - } - -private: - ShaderIR& ir; -}; - -void ShaderIR::Decode() { - std::memcpy(&header, program_code.data(), sizeof(Tegra::Shader::Header)); - - decompiled = false; - auto info = ScanFlow(program_code, main_offset, settings, registry); - auto& shader_info = *info; - coverage_begin = shader_info.start; - coverage_end = shader_info.end; - switch (shader_info.settings.depth) { - case CompileDepth::FlowStack: { - for (const auto& block : shader_info.blocks) { - basic_blocks.insert({block.start, DecodeRange(block.start, block.end + 1)}); - } - break; - } - case CompileDepth::NoFlowStack: { - disable_flow_stack = true; - const auto insert_block = [this](NodeBlock& nodes, u32 label) { - if (label == static_cast(exit_branch)) { - return; - } - basic_blocks.insert({label, nodes}); - }; - const auto& blocks = shader_info.blocks; - NodeBlock current_block; - u32 current_label = static_cast(exit_branch); - for (const auto& block : blocks) { - if (shader_info.labels.contains(block.start)) { - insert_block(current_block, current_label); - current_block.clear(); - current_label = block.start; - } - if (!block.ignore_branch) { - DecodeRangeInner(current_block, block.start, block.end); - InsertControlFlow(current_block, block); - } else { - DecodeRangeInner(current_block, block.start, block.end + 1); - } - } - insert_block(current_block, current_label); - break; - } - case CompileDepth::DecompileBackwards: - case CompileDepth::FullDecompile: { - program_manager = std::move(shader_info.manager); - disable_flow_stack = true; - decompiled = true; - ASTDecoder decoder{*this}; - ASTNode program = GetASTProgram(); - decoder.Visit(program); - break; - } - default: - LOG_CRITICAL(HW_GPU, "Unknown decompilation mode!"); - [[fallthrough]]; - case CompileDepth::BruteForce: { - const auto shader_end = static_cast(program_code.size()); - coverage_begin = main_offset; - coverage_end = shader_end; - for (u32 label = main_offset; label < shader_end; ++label) { - basic_blocks.insert({label, DecodeRange(label, label + 1)}); - } - break; - } - } - if (settings.depth != shader_info.settings.depth) { - LOG_WARNING( - HW_GPU, "Decompiling to this setting \"{}\" failed, downgrading to this setting \"{}\"", - CompileDepthAsString(settings.depth), CompileDepthAsString(shader_info.settings.depth)); - } -} - -NodeBlock ShaderIR::DecodeRange(u32 begin, u32 end) { - NodeBlock basic_block; - DecodeRangeInner(basic_block, begin, end); - return basic_block; -} - -void ShaderIR::DecodeRangeInner(NodeBlock& bb, u32 begin, u32 end) { - for (u32 pc = begin; pc < (begin > end ? MAX_PROGRAM_LENGTH : end);) { - pc = DecodeInstr(bb, pc); - } -} - -void ShaderIR::InsertControlFlow(NodeBlock& bb, const ShaderBlock& block) { - const auto apply_conditions = [&](const Condition& cond, Node n) -> Node { - Node result = n; - if (cond.cc != ConditionCode::T) { - result = Conditional(GetConditionCode(cond.cc), {result}); - } - if (cond.predicate != Pred::UnusedIndex) { - u32 pred = static_cast(cond.predicate); - const bool is_neg = pred > 7; - if (is_neg) { - pred -= 8; - } - result = Conditional(GetPredicate(pred, is_neg), {result}); - } - return result; - }; - if (std::holds_alternative(*block.branch)) { - auto branch = std::get_if(block.branch.get()); - if (branch->address < 0) { - if (branch->kill) { - Node n = Operation(OperationCode::Discard); - n = apply_conditions(branch->condition, n); - bb.push_back(n); - global_code.push_back(n); - return; - } - Node n = Operation(OperationCode::Exit); - n = apply_conditions(branch->condition, n); - bb.push_back(n); - global_code.push_back(n); - return; - } - Node n = Operation(OperationCode::Branch, Immediate(branch->address)); - n = apply_conditions(branch->condition, n); - bb.push_back(n); - global_code.push_back(n); - return; - } - auto multi_branch = std::get_if(block.branch.get()); - Node op_a = GetRegister(multi_branch->gpr); - for (auto& branch_case : multi_branch->branches) { - Node n = Operation(OperationCode::Branch, Immediate(branch_case.address)); - Node op_b = Immediate(branch_case.cmp_value); - Node condition = - GetPredicateComparisonInteger(Tegra::Shader::PredCondition::EQ, false, op_a, op_b); - auto result = Conditional(condition, {n}); - bb.push_back(result); - global_code.push_back(result); - } -} - -u32 ShaderIR::DecodeInstr(NodeBlock& bb, u32 pc) { - // Ignore sched instructions when generating code. - if (IsSchedInstruction(pc, main_offset)) { - return pc + 1; - } - - const Instruction instr = {program_code[pc]}; - const auto opcode = OpCode::Decode(instr); - const u32 nv_address = ConvertAddressToNvidiaSpace(pc); - - // Decoding failure - if (!opcode) { - UNIMPLEMENTED_MSG("Unhandled instruction: {0:x}", instr.value); - bb.push_back(Comment(fmt::format("{:05x} Unimplemented Shader instruction (0x{:016x})", - nv_address, instr.value))); - return pc + 1; - } - - bb.push_back(Comment( - fmt::format("{:05x} {} (0x{:016x})", nv_address, opcode->get().GetName(), instr.value))); - - using Tegra::Shader::Pred; - UNIMPLEMENTED_IF_MSG(instr.pred.full_pred == Pred::NeverExecute, - "NeverExecute predicate not implemented"); - - static const std::map decoders = { - {OpCode::Type::Arithmetic, &ShaderIR::DecodeArithmetic}, - {OpCode::Type::ArithmeticImmediate, &ShaderIR::DecodeArithmeticImmediate}, - {OpCode::Type::Bfe, &ShaderIR::DecodeBfe}, - {OpCode::Type::Bfi, &ShaderIR::DecodeBfi}, - {OpCode::Type::Shift, &ShaderIR::DecodeShift}, - {OpCode::Type::ArithmeticInteger, &ShaderIR::DecodeArithmeticInteger}, - {OpCode::Type::ArithmeticIntegerImmediate, &ShaderIR::DecodeArithmeticIntegerImmediate}, - {OpCode::Type::ArithmeticHalf, &ShaderIR::DecodeArithmeticHalf}, - {OpCode::Type::ArithmeticHalfImmediate, &ShaderIR::DecodeArithmeticHalfImmediate}, - {OpCode::Type::Ffma, &ShaderIR::DecodeFfma}, - {OpCode::Type::Hfma2, &ShaderIR::DecodeHfma2}, - {OpCode::Type::Conversion, &ShaderIR::DecodeConversion}, - {OpCode::Type::Warp, &ShaderIR::DecodeWarp}, - {OpCode::Type::Memory, &ShaderIR::DecodeMemory}, - {OpCode::Type::Texture, &ShaderIR::DecodeTexture}, - {OpCode::Type::Image, &ShaderIR::DecodeImage}, - {OpCode::Type::FloatSetPredicate, &ShaderIR::DecodeFloatSetPredicate}, - {OpCode::Type::IntegerSetPredicate, &ShaderIR::DecodeIntegerSetPredicate}, - {OpCode::Type::HalfSetPredicate, &ShaderIR::DecodeHalfSetPredicate}, - {OpCode::Type::PredicateSetRegister, &ShaderIR::DecodePredicateSetRegister}, - {OpCode::Type::PredicateSetPredicate, &ShaderIR::DecodePredicateSetPredicate}, - {OpCode::Type::RegisterSetPredicate, &ShaderIR::DecodeRegisterSetPredicate}, - {OpCode::Type::FloatSet, &ShaderIR::DecodeFloatSet}, - {OpCode::Type::IntegerSet, &ShaderIR::DecodeIntegerSet}, - {OpCode::Type::HalfSet, &ShaderIR::DecodeHalfSet}, - {OpCode::Type::Video, &ShaderIR::DecodeVideo}, - {OpCode::Type::Xmad, &ShaderIR::DecodeXmad}, - }; - - std::vector tmp_block; - if (const auto decoder = decoders.find(opcode->get().GetType()); decoder != decoders.end()) { - pc = (this->*decoder->second)(tmp_block, pc); - } else { - pc = DecodeOther(tmp_block, pc); - } - - // Some instructions (like SSY) don't have a predicate field, they are always unconditionally - // executed. - const bool can_be_predicated = OpCode::IsPredicatedInstruction(opcode->get().GetId()); - const auto pred_index = static_cast(instr.pred.pred_index); - - if (can_be_predicated && pred_index != static_cast(Pred::UnusedIndex)) { - const Node conditional = - Conditional(GetPredicate(pred_index, instr.negate_pred != 0), std::move(tmp_block)); - global_code.push_back(conditional); - bb.push_back(conditional); - } else { - for (auto& node : tmp_block) { - global_code.push_back(node); - bb.push_back(node); - } - } - - return pc + 1; -} - -void ShaderIR::PostDecode() { - // Deduce texture handler size if needed - auto gpu_driver = registry.AccessGuestDriverProfile(); - DeduceTextureHandlerSize(gpu_driver, used_samplers); - // Deduce Indexed Samplers - if (!uses_indexed_samplers) { - return; - } - for (auto& sampler : used_samplers) { - if (!sampler.is_indexed) { - continue; - } - if (const auto size = TryDeduceSamplerSize(sampler, gpu_driver, used_samplers)) { - sampler.size = *size; - } else { - LOG_CRITICAL(HW_GPU, "Failed to deduce size of indexed sampler"); - sampler.size = 1; - } - } -} - -} // namespace VideoCommon::Shader -- cgit v1.2.3