diff options
Diffstat (limited to 'src/video_core/shader/decode/predicate_set_register.cpp')
-rw-r--r-- | src/video_core/shader/decode/predicate_set_register.cpp | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/video_core/shader/decode/predicate_set_register.cpp b/src/video_core/shader/decode/predicate_set_register.cpp new file mode 100644 index 000000000..8bd15fb00 --- /dev/null +++ b/src/video_core/shader/decode/predicate_set_register.cpp @@ -0,0 +1,46 @@ +// 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; + +u32 ShaderIR::DecodePredicateSetRegister(BasicBlock& bb, const BasicBlock& code, u32 pc) { + const Instruction instr = {program_code[pc]}; + const auto opcode = OpCode::Decode(instr); + + UNIMPLEMENTED_IF_MSG(instr.generates_cc, + "Condition codes generation in PSET is not implemented"); + + const Node op_a = GetPredicate(instr.pset.pred12, instr.pset.neg_pred12 != 0); + const Node op_b = GetPredicate(instr.pset.pred29, instr.pset.neg_pred29 != 0); + const Node first_pred = Operation(GetPredicateCombiner(instr.pset.cond), op_a, op_b); + + const Node second_pred = GetPredicate(instr.pset.pred39, instr.pset.neg_pred39 != 0); + + const OperationCode combiner = GetPredicateCombiner(instr.pset.op); + const Node predicate = Operation(combiner, first_pred, second_pred); + + const Node true_value = instr.pset.bf ? Immediate(1.0f) : Immediate(0xffffffff); + const Node false_value = instr.pset.bf ? Immediate(0.0f) : Immediate(0); + const Node value = + Operation(OperationCode::Select, PRECISE, predicate, true_value, false_value); + + if (instr.pset.bf) { + SetInternalFlagsFromFloat(bb, value, instr.generates_cc); + } else { + SetInternalFlagsFromInteger(bb, value, instr.generates_cc); + } + SetRegister(bb, instr.gpr0, value); + + return pc; +} + +} // namespace VideoCommon::Shader
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