Mostly complete new GLSL translator (modulo flow control).

src/xenia/gpu/glsl_shader_translator.h

@@ -0,0 +1,79 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_GLSL_SHADER_TRANSLATOR_H_
+#define XENIA_GPU_GLSL_SHADER_TRANSLATOR_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "xenia/base/string_buffer.h"
+#include "xenia/gpu/shader_translator.h"
+
+namespace xe {
+namespace gpu {
+
+class GlslShaderTranslator : public ShaderTranslator {
+ public:
+  enum class Dialect {
+    kGL45,
+  };
+
+  GlslShaderTranslator(Dialect dialect);
+  ~GlslShaderTranslator() override;
+
+ protected:
+  void EmitTranslationError(const char* message) override;
+  void EmitUnimplementedTranslationError() override;
+
+  void StartTranslation() override;
+  std::vector<uint8_t> CompleteTranslation() override;
+
+  void ProcessLabel(uint32_t cf_index) override;
+  void ProcessControlFlowNopInstruction() override;
+  void ProcessExecInstructionBegin(const ParsedExecInstruction& instr) override;
+  void ProcessExecInstructionEnd(const ParsedExecInstruction& instr) override;
+  void ProcessLoopStartInstruction(
+      const ParsedLoopStartInstruction& instr) override;
+  void ProcessLoopEndInstruction(
+      const ParsedLoopEndInstruction& instr) override;
+  void ProcessCallInstruction(const ParsedCallInstruction& instr) override;
+  void ProcessReturnInstruction(const ParsedReturnInstruction& instr) override;
+  void ProcessJumpInstruction(const ParsedJumpInstruction& instr) override;
+  void ProcessAllocInstruction(const ParsedAllocInstruction& instr) override;
+  void ProcessVertexFetchInstruction(
+      const ParsedVertexFetchInstruction& instr) override;
+  void ProcessTextureFetchInstruction(
+      const ParsedTextureFetchInstruction& instr) override;
+  void ProcessAluInstruction(const ParsedAluInstruction& instr) override;
+
+ private:
+  void Indent();
+  void Unindent();
+
+  void EmitLoadOperand(size_t i, const InstructionOperand& op);
+  void EmitStoreVectorResult(const InstructionResult& result);
+  void EmitStoreScalarResult(const InstructionResult& result);
+  void EmitStoreResult(const InstructionResult& result, const char* temp);
+
+  Dialect dialect_;
+
+  StringBuffer source_;
+  int depth_ = 0;
+  char depth_prefix_[16] = {0};
+
+  void ProcessVectorAluInstruction(const ParsedAluInstruction& instr);
+  void ProcessScalarAluInstruction(const ParsedAluInstruction& instr);
+};
+
+}  // namespace gpu
+}  // namespace xe
+
+#endif  // XENIA_GPU_GLSL_SHADER_TRANSLATOR_H_