shader: Implement fine derivates constant propagation

3 files changed, 14 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
index c3e8d0681..845a57b1e 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
@@ -1925,4 +1925,12 @@ F32 IREmitter::FSwizzleAdd(const F32& a, const F32& b, const U32& swizzle, FpCon
     return Inst<F32>(Opcode::FSwizzleAdd, Flags{control}, a, b, swizzle);
 }
 
+F32 IREmitter::DPdxFine(const F32& a) {
+    return Inst<F32>(Opcode::DPdxFine, a);
+}
+
+F32 IREmitter::DPdyFine(const F32& a) {
+    return Inst<F32>(Opcode::DPdyFine, a);
+}
+
 } // namespace Shader::IR
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h
index 7e67f5e30..c7101d668 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.h
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.h
@@ -353,6 +353,10 @@ public:
     [[nodiscard]] F32 FSwizzleAdd(const F32& a, const F32& b, const U32& swizzle,
                                   FpControl control = {});
 
+    [[nodiscard]] F32 DPdxFine(const F32& a);
+
+    [[nodiscard]] F32 DPdyFine(const F32& a);
+
 private:
     IR::Block::iterator insertion_point;
 
diff --git a/src/shader_recompiler/frontend/ir/opcodes.inc b/src/shader_recompiler/frontend/ir/opcodes.inc
index 269de8ca5..e4cb8964a 100644
--- a/src/shader_recompiler/frontend/ir/opcodes.inc
+++ b/src/shader_recompiler/frontend/ir/opcodes.inc
@@ -511,3 +511,5 @@ OPCODE(ShuffleUp,                                           U32,            U32,
 OPCODE(ShuffleDown,                                         U32,            U32,            U32,            U32,            U32,                            )
 OPCODE(ShuffleButterfly,                                    U32,            U32,            U32,            U32,            U32,                            )
 OPCODE(FSwizzleAdd,                                         F32,            F32,            F32,            U32,                                            )
+OPCODE(DPdxFine,                                            F32,            F32,                                                                            )
+OPCODE(DPdyFine,                                            F32,            F32,                                                                            )