From 15a0e1481d9a1efb3e3aa61cbaf2fa1ba0392d71 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Thu, 20 Dec 2018 19:09:21 -0300
Subject: shader_ir: Initial implementation

---
 src/video_core/shader/shader_ir.cpp | 105 ++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 src/video_core/shader/shader_ir.cpp

(limited to 'src/video_core/shader/shader_ir.cpp')

diff --git a/src/video_core/shader/shader_ir.cpp b/src/video_core/shader/shader_ir.cpp
new file mode 100644
index 000000000..db00c8902
--- /dev/null
+++ b/src/video_core/shader/shader_ir.cpp
@@ -0,0 +1,105 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cmath>
+#include <unordered_map>
+
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "video_core/engines/shader_bytecode.h"
+#include "video_core/shader/shader_ir.h"
+
+namespace VideoCommon::Shader {
+
+using Tegra::Shader::Attribute;
+using Tegra::Shader::Instruction;
+using Tegra::Shader::IpaMode;
+using Tegra::Shader::Pred;
+using Tegra::Shader::PredCondition;
+using Tegra::Shader::PredOperation;
+using Tegra::Shader::Register;
+
+Node ShaderIR::StoreNode(NodeData&& node_data) {
+    auto store = std::make_unique<NodeData>(node_data);
+    const Node node = store.get();
+    stored_nodes.push_back(std::move(store));
+    return node;
+}
+
+Node ShaderIR::Conditional(Node condition, std::vector<Node>&& code) {
+    return StoreNode(ConditionalNode(condition, std::move(code)));
+}
+
+Node ShaderIR::Comment(const std::string& text) {
+    return StoreNode(CommentNode(text));
+}
+
+Node ShaderIR::GetPredicate(u64 pred_, bool negated) {
+    const auto pred = static_cast<Pred>(pred_);
+    if (pred != Pred::UnusedIndex && pred != Pred::NeverExecute) {
+        used_predicates.insert(pred);
+    }
+
+    return StoreNode(PredicateNode(pred, negated));
+}
+
+/*static*/ OperationCode ShaderIR::SignedToUnsignedCode(OperationCode operation_code,
+                                                        bool is_signed) {
+    if (is_signed) {
+        return operation_code;
+    }
+    switch (operation_code) {
+    case OperationCode::FCastInteger:
+        return OperationCode::FCastUInteger;
+    case OperationCode::IAdd:
+        return OperationCode::UAdd;
+    case OperationCode::IMul:
+        return OperationCode::UMul;
+    case OperationCode::IDiv:
+        return OperationCode::UDiv;
+    case OperationCode::IMin:
+        return OperationCode::UMin;
+    case OperationCode::IMax:
+        return OperationCode::UMax;
+    case OperationCode::ICastFloat:
+        return OperationCode::UCastFloat;
+    case OperationCode::ICastUnsigned:
+        return OperationCode::UCastSigned;
+    case OperationCode::ILogicalShiftLeft:
+        return OperationCode::ULogicalShiftLeft;
+    case OperationCode::ILogicalShiftRight:
+        return OperationCode::ULogicalShiftRight;
+    case OperationCode::IArithmeticShiftRight:
+        return OperationCode::UArithmeticShiftRight;
+    case OperationCode::IBitwiseAnd:
+        return OperationCode::UBitwiseAnd;
+    case OperationCode::IBitwiseOr:
+        return OperationCode::UBitwiseOr;
+    case OperationCode::IBitwiseXor:
+        return OperationCode::UBitwiseXor;
+    case OperationCode::IBitwiseNot:
+        return OperationCode::UBitwiseNot;
+    case OperationCode::IBitfieldInsert:
+        return OperationCode::UBitfieldInsert;
+    case OperationCode::LogicalILessThan:
+        return OperationCode::LogicalULessThan;
+    case OperationCode::LogicalIEqual:
+        return OperationCode::LogicalUEqual;
+    case OperationCode::LogicalILessEqual:
+        return OperationCode::LogicalULessEqual;
+    case OperationCode::LogicalIGreaterThan:
+        return OperationCode::LogicalUGreaterThan;
+    case OperationCode::LogicalINotEqual:
+        return OperationCode::LogicalUNotEqual;
+    case OperationCode::LogicalIGreaterEqual:
+        return OperationCode::LogicalUGreaterEqual;
+    case OperationCode::INegate:
+        UNREACHABLE_MSG("Can't negate an unsigned integer");
+    case OperationCode::IAbsolute:
+        UNREACHABLE_MSG("Can't apply absolute to an unsigned integer");
+    }
+    UNREACHABLE_MSG("Unknown signed operation with code={}", static_cast<u32>(operation_code));
+}
+
+} // namespace VideoCommon::Shader
\ No newline at end of file
-- 
cgit v1.2.3