2 files changed, 32 insertions, 0 deletions

diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h
index bdf97e77f..ab978c2e2 100644
--- a/src/video_core/engines/shader_bytecode.h
+++ b/src/video_core/engines/shader_bytecode.h
@@ -298,6 +298,13 @@ union Instruction {
     } iadd32i;
 
     union {
+        BitField<53, 1, u64> negate_b;
+        BitField<54, 1, u64> abs_a;
+        BitField<56, 1, u64> negate_a;
+        BitField<57, 1, u64> abs_b;
+    } fadd32i;
+
+    union {
         BitField<20, 8, u64> shift_position;
         BitField<28, 8, u64> shift_length;
         BitField<48, 1, u64> negate_b;
@@ -487,6 +494,7 @@ public:
         FADD_C,
         FADD_R,
         FADD_IMM,
+        FADD32I,
         FMUL_C,
         FMUL_R,
         FMUL_IMM,
@@ -686,6 +694,7 @@ private:
             INST("0100110001011---", Id::FADD_C, Type::Arithmetic, "FADD_C"),
             INST("0101110001011---", Id::FADD_R, Type::Arithmetic, "FADD_R"),
             INST("0011100-01011---", Id::FADD_IMM, Type::Arithmetic, "FADD_IMM"),
+            INST("000010----------", Id::FADD32I, Type::ArithmeticImmediate, "FADD32I"),
             INST("0100110001101---", Id::FMUL_C, Type::Arithmetic, "FMUL_C"),
             INST("0101110001101---", Id::FMUL_R, Type::Arithmetic, "FMUL_R"),
             INST("0011100-01101---", Id::FMUL_IMM, Type::Arithmetic, "FMUL_IMM"),
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 5914077e8..c29cabb84 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -968,6 +968,29 @@ private:
                     regs.GetRegisterAsFloat(instr.gpr8) + " * " + GetImmediate32(instr), 1, 1);
                 break;
             }
+            case OpCode::Id::FADD32I: {
+                std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
+                std::string op_b = GetImmediate32(instr);
+
+                if (instr.fadd32i.abs_a) {
+                    op_a = "abs(" + op_a + ')';
+                }
+
+                if (instr.fadd32i.negate_a) {
+                    op_a = "-(" + op_a + ')';
+                }
+
+                if (instr.fadd32i.abs_b) {
+                    op_b = "abs(" + op_b + ')';
+                }
+
+                if (instr.fadd32i.negate_b) {
+                    op_b = "-(" + op_b + ')';
+                }
+
+                regs.SetRegisterToFloat(instr.gpr0, 0, op_a + " + " + op_b, 1, 1);
+                break;
+            }
             }
             break;
         }