From 704c6f353f68745168902c6c66c04bb730bd30e6 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sun, 21 Feb 2021 17:50:14 -0300
Subject: shader: Rename, implement FADD.SAT and P2R (imm)

---
 .../frontend/maxwell/translate/impl/impl.cpp            | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

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

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp
index 079e3497f..be17bb0d9 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp
@@ -48,11 +48,11 @@ IR::U32 TranslatorVisitor::GetReg39(u64 insn) {
     return X(reg.index);
 }
 
-IR::F32 TranslatorVisitor::GetReg20F(u64 insn) {
+IR::F32 TranslatorVisitor::GetRegFloat20(u64 insn) {
     return ir.BitCast<IR::F32>(GetReg20(insn));
 }
 
-IR::F32 TranslatorVisitor::GetReg39F(u64 insn) {
+IR::F32 TranslatorVisitor::GetRegFloat39(u64 insn) {
     return ir.BitCast<IR::F32>(GetReg39(insn));
 }
 
@@ -73,7 +73,7 @@ IR::U32 TranslatorVisitor::GetCbuf(u64 insn) {
     return ir.GetCbuf(binding, byte_offset);
 }
 
-IR::F32 TranslatorVisitor::GetCbufF(u64 insn) {
+IR::F32 TranslatorVisitor::GetFloatCbuf(u64 insn) {
     return ir.BitCast<IR::F32>(GetCbuf(insn));
 }
 
@@ -88,6 +88,17 @@ IR::U32 TranslatorVisitor::GetImm20(u64 insn) {
     return ir.Imm32(value);
 }
 
+IR::F32 TranslatorVisitor::GetFloatImm20(u64 insn) {
+    union {
+        u64 raw;
+        BitField<20, 19, u64> value;
+        BitField<56, 1, u64> is_negative;
+    } const imm{insn};
+    const f32 positive_value{Common::BitCast<f32>(static_cast<u32>(imm.value) << 12)};
+    const f32 value{imm.is_negative != 0 ? -positive_value : positive_value};
+    return ir.Imm32(value);
+}
+
 IR::U32 TranslatorVisitor::GetImm32(u64 insn) {
     union {
         u64 raw;
-- 
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