From b11e0b94c7ce0d965a6149c98c48cda967ec3c04 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Mon, 24 Dec 2018 00:51:52 -0300 Subject: shader_decode: Implement HSET2 --- src/video_core/shader/decode/half_set.cpp | 44 ++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) (limited to 'src/video_core/shader/decode') diff --git a/src/video_core/shader/decode/half_set.cpp b/src/video_core/shader/decode/half_set.cpp index af363d5d2..b4ac06144 100644 --- a/src/video_core/shader/decode/half_set.cpp +++ b/src/video_core/shader/decode/half_set.cpp @@ -2,6 +2,8 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include + #include "common/assert.h" #include "common/common_types.h" #include "video_core/engines/shader_bytecode.h" @@ -16,7 +18,47 @@ u32 ShaderIR::DecodeHalfSet(BasicBlock& bb, u32 pc) { const Instruction instr = {program_code[pc]}; const auto opcode = OpCode::Decode(instr); - UNIMPLEMENTED(); + UNIMPLEMENTED_IF(instr.hset2.ftz != 0); + + // instr.hset2.type_a + // instr.hset2.type_b + Node op_a = GetRegister(instr.gpr8); + Node op_b = [&]() { + switch (opcode->get().GetId()) { + case OpCode::Id::HSET2_R: + return GetRegister(instr.gpr20); + default: + UNREACHABLE(); + return Immediate(0); + } + }(); + + op_a = GetOperandAbsNegHalf(op_a, instr.hset2.abs_a, instr.hset2.negate_a); + op_b = GetOperandAbsNegHalf(op_b, instr.hset2.abs_b, instr.hset2.negate_b); + + const Node second_pred = GetPredicate(instr.hset2.pred39, instr.hset2.neg_pred); + + MetaHalfArithmetic meta{false, {instr.hset2.type_a, instr.hset2.type_b}}; + const Node comparison_pair = GetPredicateComparisonHalf(instr.hset2.cond, meta, op_a, op_b); + + const OperationCode combiner = GetPredicateCombiner(instr.hset2.op); + + // HSET2 operates on each half float in the pack. + std::array values; + for (u32 i = 0; i < 2; ++i) { + const u32 raw_value = instr.hset2.bf ? 0x3c00 : 0xffff; + const Node true_value = Immediate(raw_value << (i * 16)); + const Node false_value = Immediate(0); + + const Node comparison = + Operation(OperationCode::LogicalPick2, comparison_pair, Immediate(i)); + const Node predicate = Operation(combiner, comparison, second_pred); + + values[i] = Operation(OperationCode::Select, NO_PRECISE, predicate, true_value, false_value); + } + + const Node value = Operation(OperationCode::UBitwiseOr, NO_PRECISE, values[0], values[1]); + SetRegister(bb, instr.gpr0, value); return pc; } -- cgit v1.2.3