diff options
Diffstat (limited to 'src/video_core/shader')
| -rw-r--r-- | src/video_core/shader/decode/arithmetic_integer.cpp | 60 | ||||
| -rw-r--r-- | src/video_core/shader/shader_ir.h | 2 |
2 files changed, 62 insertions, 0 deletions
diff --git a/src/video_core/shader/decode/arithmetic_integer.cpp b/src/video_core/shader/decode/arithmetic_integer.cpp index dbdcebbb4..145bbcfc8 100644 --- a/src/video_core/shader/decode/arithmetic_integer.cpp +++ b/src/video_core/shader/decode/arithmetic_integer.cpp @@ -11,6 +11,7 @@ namespace VideoCommon::Shader { using Tegra::Shader::Instruction; using Tegra::Shader::OpCode; +using Tegra::Shader::Register; u32 ShaderIR::DecodeArithmeticInteger(BasicBlock& bb, u32 pc) { const Instruction instr = {program_code[pc]}; @@ -79,6 +80,24 @@ u32 ShaderIR::DecodeArithmeticInteger(BasicBlock& bb, u32 pc) { instr.alu.lop.pred_result_mode, instr.alu.lop.pred48); break; } + case OpCode::Id::LOP3_C: + case OpCode::Id::LOP3_R: + case OpCode::Id::LOP3_IMM: { + UNIMPLEMENTED_IF_MSG(instr.generates_cc, + "Condition codes generation in LOP3 is not implemented"); + + const Node op_c = GetRegister(instr.gpr39); + const Node lut = [&]() { + if (opcode->get().GetId() == OpCode::Id::LOP3_R) { + return Immediate(instr.alu.lop3.GetImmLut28()); + } else { + return Immediate(instr.alu.lop3.GetImmLut48()); + } + }(); + + WriteLop3Instruction(bb, instr.gpr0, op_a, op_b, op_c, lut); + break; + } case OpCode::Id::IMNMX_C: case OpCode::Id::IMNMX_R: case OpCode::Id::IMNMX_IMM: { @@ -102,4 +121,45 @@ u32 ShaderIR::DecodeArithmeticInteger(BasicBlock& bb, u32 pc) { return pc; } +void ShaderIR::WriteLop3Instruction(BasicBlock& bb, Register dest, Node op_a, Node op_b, Node op_c, + Node imm_lut) { + constexpr u32 lop_iterations = 32; + const Node one = Immediate(1); + const Node two = Immediate(2); + + Node value{}; + for (u32 i = 0; i < lop_iterations; ++i) { + const Node shift_amount = Immediate(i); + + const Node a = Operation(OperationCode::ILogicalShiftRight, NO_PRECISE, op_c, shift_amount); + const Node pack_0 = Operation(OperationCode::IBitwiseAnd, NO_PRECISE, a, one); + + const Node b = Operation(OperationCode::ILogicalShiftRight, NO_PRECISE, op_b, shift_amount); + const Node c = Operation(OperationCode::IBitwiseAnd, NO_PRECISE, b, one); + const Node pack_1 = Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, c, one); + + const Node d = Operation(OperationCode::ILogicalShiftRight, NO_PRECISE, op_a, shift_amount); + const Node e = Operation(OperationCode::IBitwiseAnd, NO_PRECISE, d, one); + const Node pack_2 = Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, e, two); + + const Node pack_01 = Operation(OperationCode::IBitwiseAnd, NO_PRECISE, pack_0, pack_1); + const Node pack_012 = Operation(OperationCode::IBitwiseAnd, NO_PRECISE, pack_01, pack_2); + + const Node shifted_bit = + Operation(OperationCode::ILogicalShiftRight, NO_PRECISE, imm_lut, pack_012); + const Node bit = Operation(OperationCode::IBitwiseAnd, NO_PRECISE, shifted_bit, one); + + const Node right = + Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, bit, shift_amount); + + if (i > 0) { + value = Operation(OperationCode::IBitwiseOr, NO_PRECISE, value, right); + } else { + value = right; + } + } + + SetRegister(bb, dest, value); +} + } // namespace VideoCommon::Shader
\ No newline at end of file diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h index b67fd6531..b91ef246f 100644 --- a/src/video_core/shader/shader_ir.h +++ b/src/video_core/shader/shader_ir.h @@ -701,6 +701,8 @@ private: Tegra::Shader::LogicOperation logic_op, Node op_a, Node op_b, Tegra::Shader::PredicateResultMode predicate_mode, Tegra::Shader::Pred predicate); + void WriteLop3Instruction(BasicBlock& bb, Tegra::Shader::Register dest, Node op_a, Node op_b, + Node op_c, Node imm_lut); template <typename... T> inline Node Operation(OperationCode code, const T*... operands) { |