Merge pull request #1479 from JayFoxRox/mad-encoding

Fix MAD/MADI encoding

1 files changed, 5 insertions, 2 deletions

diff --git a/src/video_core/shader/shader_interpreter.cpp b/src/video_core/shader/shader_interpreter.cpp
index 79fcc56b9..295a2466b 100644
--- a/src/video_core/shader/shader_interpreter.cpp
+++ b/src/video_core/shader/shader_interpreter.cpp
@@ -413,9 +413,12 @@ void RunInterpreter(UnitState<Debug>& state) {
 
                 bool is_inverted = (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MADI);
 
+                const int address_offset = (instr.mad.address_register_index == 0)
+                                           ? 0 : state.address_registers[instr.mad.address_register_index - 1];
+
                 const float24* src1_ = LookupSourceRegister(instr.mad.GetSrc1(is_inverted));
-                const float24* src2_ = LookupSourceRegister(instr.mad.GetSrc2(is_inverted));
-                const float24* src3_ = LookupSourceRegister(instr.mad.GetSrc3(is_inverted));
+                const float24* src2_ = LookupSourceRegister(instr.mad.GetSrc2(is_inverted) + (!is_inverted * address_offset));
+                const float24* src3_ = LookupSourceRegister(instr.mad.GetSrc3(is_inverted) + ( is_inverted * address_offset));
 
                 const bool negate_src1 = ((bool)swizzle.negate_src1 != false);
                 const bool negate_src2 = ((bool)swizzle.negate_src2 != false);