From 51475e21ba5e9a17730a2b5a868dc73d53db9bc1 Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Sat, 27 Mar 2021 19:47:00 -0400
Subject: shader: Implement VMAD, VMNMX, VSETP

---
 .../maxwell/translate/impl/video_multiply_add.cpp  | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 src/shader_recompiler/frontend/maxwell/translate/impl/video_multiply_add.cpp

(limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/video_multiply_add.cpp')

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/video_multiply_add.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/video_multiply_add.cpp
new file mode 100644
index 000000000..cc2e6d6e6
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/video_multiply_add.cpp
@@ -0,0 +1,64 @@
+// 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/impl.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/video_helper.h"
+
+namespace Shader::Maxwell {
+void TranslatorVisitor::VMAD(u64 insn) {
+    union {
+        u64 raw;
+        BitField<0, 8, IR::Reg> dest_reg;
+        BitField<20, 16, u64> src_b_imm;
+        BitField<28, 2, u64> src_b_selector;
+        BitField<29, 2, VideoWidth> src_b_width;
+        BitField<36, 2, u64> src_a_selector;
+        BitField<37, 2, VideoWidth> src_a_width;
+        BitField<47, 1, u64> cc;
+        BitField<48, 1, u64> src_a_sign;
+        BitField<49, 1, u64> src_b_sign;
+        BitField<50, 1, u64> is_src_b_reg;
+        BitField<51, 2, u64> scale;
+        BitField<53, 1, u64> src_c_neg;
+        BitField<54, 1, u64> src_a_neg;
+        BitField<55, 1, u64> sat;
+    } const vmad{insn};
+
+    if (vmad.cc != 0) {
+        throw NotImplementedException("VMAD CC");
+    }
+    if (vmad.sat != 0) {
+        throw NotImplementedException("VMAD SAT");
+    }
+    if (vmad.scale != 0) {
+        throw NotImplementedException("VMAD SCALE");
+    }
+    if (vmad.src_a_neg != 0 && vmad.src_c_neg != 0) {
+        throw NotImplementedException("VMAD PO");
+    }
+    if (vmad.src_a_neg != 0 || vmad.src_c_neg != 0) {
+        throw NotImplementedException("VMAD NEG");
+    }
+    const bool is_b_imm{vmad.is_src_b_reg == 0};
+    const IR::U32 src_a{GetReg8(insn)};
+    const IR::U32 src_b{is_b_imm ? ir.Imm32(static_cast<u32>(vmad.src_b_imm)) : GetReg20(insn)};
+    const IR::U32 src_c{GetReg39(insn)};
+
+    const u32 a_selector{static_cast<u32>(vmad.src_a_selector)};
+    // Immediate values can't have a selector
+    const u32 b_selector{is_b_imm ? 0U : static_cast<u32>(vmad.src_b_selector)};
+    const VideoWidth a_width{vmad.src_a_width};
+    const VideoWidth b_width{GetVideoSourceWidth(vmad.src_b_width, is_b_imm)};
+
+    const bool src_a_signed{vmad.src_a_sign != 0};
+    const bool src_b_signed{vmad.src_b_sign != 0};
+    const IR::U32 op_a{ExtractVideoOperandValue(ir, src_a, a_width, a_selector, src_a_signed)};
+    const IR::U32 op_b{ExtractVideoOperandValue(ir, src_b, b_width, b_selector, src_b_signed)};
+
+    X(vmad.dest_reg, ir.IAdd(ir.IMul(op_a, op_b), src_c));
+}
+
+} // namespace Shader::Maxwell
-- 
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