From 285de2a52165d63847ea41cded8cf421c2be0bea Mon Sep 17 00:00:00 2001
From: Triang3l <triang3l@yandex.ru>
Date: Mon, 27 Aug 2018 16:53:59 +0300
Subject: [PATCH] [D3D12] DXBC string append

---
 src/xenia/gpu/dxbc_shader_translator.cc | 14 ++++++++++++++
 src/xenia/gpu/dxbc_shader_translator.h  |  3 +++
 2 files changed, 17 insertions(+)

diff --git a/src/xenia/gpu/dxbc_shader_translator.cc b/src/xenia/gpu/dxbc_shader_translator.cc
index bcbdb233e..bfbf95f41 100644
--- a/src/xenia/gpu/dxbc_shader_translator.cc
+++ b/src/xenia/gpu/dxbc_shader_translator.cc
@@ -14,6 +14,8 @@
 #include "third_party/dxbc/DXBCChecksum.h"
 #include "third_party/dxbc/d3d12TokenizedProgramFormat.hpp"
 
+#include "xenia/base/math.h"
+
 namespace xe {
 namespace gpu {
 using namespace ucode;
@@ -58,5 +60,17 @@ std::vector<uint8_t> DxbcShaderTranslator::CompleteTranslation() {
   return shader_object_bytes;
 }
 
+uint32_t DxbcShaderTranslator::AppendString(std::vector<uint32_t>& dest,
+                                            const char* source) {
+  size_t size = std::strlen(source) + 1;
+  size_t size_aligned = xe::align(size_aligned, sizeof(uint32_t));
+  size_t dest_pos = dest.size();
+  dest.resize(dest_pos + size_aligned / sizeof(uint32_t));
+  std::memcpy(&dest[dest_pos], source, size);
+  std::memset(reinterpret_cast<uint8_t*>(&dest[dest_pos]) + size, 0xAB,
+              size_aligned - size);
+  return uint32_t(size_aligned);
+}
+
 }  // namespace gpu
 }  // namespace xe
diff --git a/src/xenia/gpu/dxbc_shader_translator.h b/src/xenia/gpu/dxbc_shader_translator.h
index 5f8f144c8..b8d3ad381 100644
--- a/src/xenia/gpu/dxbc_shader_translator.h
+++ b/src/xenia/gpu/dxbc_shader_translator.h
@@ -29,6 +29,9 @@ class DxbcShaderTranslator : public ShaderTranslator {
   std::vector<uint8_t> CompleteTranslation() override;
 
  private:
+  // Appends a string to a DWORD stream, returns the DWORD-aligned length.
+  static uint32_t AppendString(std::vector<uint32_t>& dest, const char* source);
+
   // Executable instructions - generated during translation.
   std::vector<uint32_t> shader_code_;
   // Complete shader object, with all the needed chunks and dcl_ instructions -