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author | bunnei <bunneidev@gmail.com> | 2019-01-26 05:42:14 +0100 |
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committer | GitHub <noreply@github.com> | 2019-01-26 05:42:14 +0100 |
commit | 1f4ca1e841cd0b0427218d787efe10a3fa62df33 (patch) | |
tree | 00cc1743c6a6ba593e3b56897b13c2272a71d779 /src/video_core/shader/decode/integer_set_predicate.cpp | |
parent | Merge pull request #2054 from bunnei/scope-context-refactor (diff) | |
parent | shader_ir: Fixup clang build (diff) | |
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Diffstat (limited to 'src/video_core/shader/decode/integer_set_predicate.cpp')
-rw-r--r-- | src/video_core/shader/decode/integer_set_predicate.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/video_core/shader/decode/integer_set_predicate.cpp b/src/video_core/shader/decode/integer_set_predicate.cpp new file mode 100644 index 000000000..c8b105a08 --- /dev/null +++ b/src/video_core/shader/decode/integer_set_predicate.cpp @@ -0,0 +1,53 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/assert.h" +#include "common/common_types.h" +#include "video_core/engines/shader_bytecode.h" +#include "video_core/shader/shader_ir.h" + +namespace VideoCommon::Shader { + +using Tegra::Shader::Instruction; +using Tegra::Shader::OpCode; +using Tegra::Shader::Pred; + +u32 ShaderIR::DecodeIntegerSetPredicate(BasicBlock& bb, const BasicBlock& code, u32 pc) { + const Instruction instr = {program_code[pc]}; + const auto opcode = OpCode::Decode(instr); + + const Node op_a = GetRegister(instr.gpr8); + + const Node op_b = [&]() { + if (instr.is_b_imm) { + return Immediate(instr.alu.GetSignedImm20_20()); + } else if (instr.is_b_gpr) { + return GetRegister(instr.gpr20); + } else { + return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset); + } + }(); + + // We can't use the constant predicate as destination. + ASSERT(instr.isetp.pred3 != static_cast<u64>(Pred::UnusedIndex)); + + const Node second_pred = GetPredicate(instr.isetp.pred39, instr.isetp.neg_pred != 0); + const Node predicate = + GetPredicateComparisonInteger(instr.isetp.cond, instr.isetp.is_signed, op_a, op_b); + + // Set the primary predicate to the result of Predicate OP SecondPredicate + const OperationCode combiner = GetPredicateCombiner(instr.isetp.op); + const Node value = Operation(combiner, predicate, second_pred); + SetPredicate(bb, instr.isetp.pred3, value); + + if (instr.isetp.pred0 != static_cast<u64>(Pred::UnusedIndex)) { + // Set the secondary predicate to the result of !Predicate OP SecondPredicate, if enabled + const Node negated_pred = Operation(OperationCode::LogicalNegate, predicate); + SetPredicate(bb, instr.isetp.pred0, Operation(combiner, negated_pred, second_pred)); + } + + return pc; +} + +} // namespace VideoCommon::Shader
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