shader: Implement DMUL and DFMA

Also add a missing const on DADD

1 files changed, 45 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/double_multiply.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/double_multiply.cpp
new file mode 100644
index 000000000..3e83d1c95
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/double_multiply.cpp
@@ -0,0 +1,45 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+#include "shader_recompiler/exception.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/common_encoding.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
+
+namespace Shader::Maxwell {
+namespace {
+
+void DMUL(TranslatorVisitor& v, u64 insn, const IR::F64& src_b) {
+    union {
+        u64 raw;
+        BitField<0, 8, IR::Reg> dest_reg;
+        BitField<8, 8, IR::Reg> src_a_reg;
+        BitField<39, 2, FpRounding> fp_rounding;
+        BitField<48, 1, u64> neg;
+    } const dmul{insn};
+
+    const IR::F64 src_a{v.ir.FPAbsNeg(v.D(dmul.src_a_reg), false, dmul.neg != 0)};
+    const IR::FpControl control{
+        .no_contraction{true},
+        .rounding{CastFpRounding(dmul.fp_rounding)},
+        .fmz_mode{IR::FmzMode::None},
+    };
+
+    v.D(dmul.dest_reg, v.ir.FPMul(src_a, src_b, control));
+}
+} // Anonymous namespace
+
+void TranslatorVisitor::DMUL_reg(u64 insn) {
+    DMUL(*this, insn, GetDoubleReg20(insn));
+}
+
+void TranslatorVisitor::DMUL_cbuf(u64 insn) {
+    DMUL(*this, insn, GetDoubleCbuf(insn));
+}
+
+void TranslatorVisitor::DMUL_imm(u64 insn) {
+    DMUL(*this, insn, GetDoubleImm20(insn));
+}
+
+} // namespace Shader::Maxwell