VideoCommon: add logic to generate render targets using a render target template and some other metadata

Source/Core/VideoCommon/GraphicsModEditor/RenderTargetGeneration.cpp

@@ -0,0 +1,29 @@
+// Copyright 2025 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "VideoCommon/GraphicsModEditor/RenderTargetGeneration.h"
+
+#include "Common/JsonUtil.h"
+#include "Common/StringUtil.h"
+
+#include "VideoCommon/GraphicsModEditor/EditorState.h"
+
+namespace GraphicsModEditor
+{
+EditorAsset* GenerateRenderTarget(const std::filesystem::path& output_path,
+                                  const VideoCommon::RenderTargetData& data,
+                                  GraphicsModEditor::EditorAssetSource* source)
+{
+  picojson::object obj;
+  VideoCommon::RenderTargetData::ToJson(&obj, data);
+
+  const auto metadata_path = output_path / "metadata.rendertarget";
+  if (!JsonToFile(PathToString(metadata_path), picojson::value{obj}, true))
+  {
+    return nullptr;
+  }
+
+  source->AddAsset(metadata_path);
+  return source->GetAssetFromPath(metadata_path);
+}
+}  // namespace GraphicsModEditor

Source/Core/VideoCommon/GraphicsModEditor/RenderTargetGeneration.h

@@ -0,0 +1,17 @@
+// Copyright 2025 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <filesystem>
+
+#include "VideoCommon/Assets/RenderTargetAsset.h"
+
+namespace GraphicsModEditor
+{
+struct EditorAsset;
+class EditorAssetSource;
+EditorAsset* GenerateRenderTarget(const std::filesystem::path& output_path,
+                                  const VideoCommon::RenderTargetData& data,
+                                  GraphicsModEditor::EditorAssetSource* source);
+}  // namespace GraphicsModEditor