GPU: Stub the shader SYNC and DEPBAR instructions.

It is unknown at this moment if we actually need to do something with these instructions or if the GLSL compiler takes care of that for us.

src/video_core/engines/shader_bytecode.h

@@ -438,6 +438,8 @@ public:
     enum class Id {
         KIL,
         SSY,
+        SYNC,
+        DEPBAR,
         BFE_C,
         BFE_R,
         BFE_IMM,
@@ -534,6 +536,7 @@ public:
         Shift,
         Ffma,
         Flow,
+        Synch,
         Memory,
         FloatSet,
         FloatSetPredicate,
@@ -638,6 +641,8 @@ private:
             INST("111000110011----", Id::KIL, Type::Flow, "KIL"),
             INST("111000101001----", Id::SSY, Type::Flow, "SSY"),
             INST("111000100100----", Id::BRA, Type::Flow, "BRA"),
+            INST("1111000011110---", Id::DEPBAR, Type::Synch, "DEPBAR"),
+            INST("1111000011111---", Id::SYNC, Type::Synch, "SYNC"),
             INST("1110111111011---", Id::LD_A, Type::Memory, "LD_A"),
             INST("1110111110010---", Id::LD_C, Type::Memory, "LD_C"),
             INST("1110111111110---", Id::ST_A, Type::Memory, "ST_A"),

src/video_core/renderer_opengl/gl_shader_decompiler.cpp

@@ -1599,6 +1599,13 @@ private:
                 // can ignore this when generating GLSL code.
                 break;
             }
+            case OpCode::Id::DEPBAR:
+            case OpCode::Id::SYNC: {
+                // TODO(Subv): Find out if we actually have to care about these instructions or if
+                // the GLSL compiler takes care of that for us.
+                LOG_WARNING(HW_GPU, "DEPBAR/SYNC instruction is stubbed");
+                break;
+            }
             default: {
                 LOG_CRITICAL(HW_GPU, "Unhandled instruction: {}", opcode->GetName());
                 UNREACHABLE();