VideoCommon: add logic to generate shader using a shader template and some other metadata

Source/Core/VideoCommon/GraphicsModEditor/ShaderGeneration.cpp

@@ -0,0 +1,53 @@
+// Copyright 2024 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "VideoCommon/GraphicsModEditor/ShaderGeneration.h"
+
+#include "Common/FileUtil.h"
+#include "Common/StringUtil.h"
+
+#include "VideoCommon/GraphicsModEditor/EditorState.h"
+
+namespace GraphicsModEditor
+{
+EditorAsset* GenerateShader(const std::filesystem::path& output_path,
+                            const ShaderGenerationContext& context,
+                            GraphicsModEditor::EditorAssetSource* source)
+{
+  picojson::object obj;
+  VideoCommon::RasterShaderData::ToJson(obj, context.shader_template);
+
+  return GenerateShader(output_path, context.pixel_name, context.vertex_name, context.metadata_name,
+                        context.shader_template.m_pixel_source,
+                        context.shader_template.m_vertex_source, picojson::value{obj}.serialize(),
+                        source);
+}
+
+EditorAsset* GenerateShader(const std::filesystem::path& output_path, std::string_view pixel_name,
+                            std::string_view vertex_name, std::string_view metadata_name,
+                            std::string_view pixel_source, std::string_view vertex_source,
+                            std::string_view metadata_source,
+                            GraphicsModEditor::EditorAssetSource* source)
+{
+  const auto metadata_path = output_path / metadata_name;
+  if (!File::WriteStringToFile(PathToString(metadata_path), metadata_source))
+  {
+    return nullptr;
+  }
+
+  const auto vertex_path = output_path / vertex_name;
+  if (!File::WriteStringToFile(PathToString(vertex_path), vertex_source))
+  {
+    return nullptr;
+  }
+
+  const auto pixel_path = output_path / pixel_name;
+  if (!File::WriteStringToFile(PathToString(pixel_path), pixel_source))
+  {
+    return nullptr;
+  }
+
+  source->AddAsset(metadata_path);
+  return source->GetAssetFromPath(metadata_path);
+}
+}  // namespace GraphicsModEditor

Source/Core/VideoCommon/GraphicsModEditor/ShaderGeneration.h

@@ -0,0 +1,32 @@
+// Copyright 2024 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <filesystem>
+#include <string>
+#include <string_view>
+
+#include "VideoCommon/Assets/ShaderAsset.h"
+
+namespace GraphicsModEditor
+{
+struct EditorAsset;
+class EditorAssetSource;
+struct ShaderGenerationContext
+{
+  VideoCommon::RasterShaderData shader_template;
+
+  std::string_view pixel_name;
+  std::string_view vertex_name;
+  std::string_view metadata_name;
+};
+EditorAsset* GenerateShader(const std::filesystem::path& output_path,
+                            const ShaderGenerationContext& context,
+                            GraphicsModEditor::EditorAssetSource* source);
+EditorAsset* GenerateShader(const std::filesystem::path& output_path, std::string_view pixel_name,
+                            std::string_view vertex_name, std::string_view metadata_name,
+                            std::string_view pixel_source, std::string_view vertex_source,
+                            std::string_view metadata_source,
+                            GraphicsModEditor::EditorAssetSource* source);
+}  // namespace GraphicsModEditor