Add RmlUi

Minecraft.Client/RmlManager.cpp

@@ -0,0 +1,156 @@
+#include "stdafx.h"
+#include "RmlManager.h"
+
+extern ID3D11Device* g_pd3dDevice;
+extern ID3D11DeviceContext* g_pImmediateContext;
+extern ID3D11RenderTargetView* g_pRenderTargetView;
+
+RmlManager& RmlManager::Get()
+{
+	static RmlManager instance;
+	return instance;
+}
+
+RmlManager::RmlManager()
+	: m_initialised(false)
+	, m_context(nullptr)
+{
+}
+
+RmlManager::~RmlManager()
+{
+	Shutdown();
+}
+
+bool RmlManager::Init(int viewport_width, int viewport_height)
+{
+	if (m_initialised)
+		return true;
+
+	m_file_interface = std::make_unique<FileInterface_Game>();
+	m_system_interface = std::make_unique<SystemInterface_Win64>();
+	m_renderer = std::make_unique<RenderInterface_D3D11>(g_pd3dDevice, g_pImmediateContext);
+
+	if (!m_renderer->IsInitialised())
+	{
+		app.DebugPrintf("[RmlManager] Renderer failed to initialise\n");
+		return false;
+	}
+
+	// Set asset path for RmlUi files (relative to exe directory)
+	char exePath[MAX_PATH];
+	GetModuleFileNameA(nullptr, exePath, MAX_PATH);
+	char* lastSlash = strrchr(exePath, '\\');
+	if (lastSlash)
+		*(lastSlash + 1) = '\0';
+	Rml::String assetPath = Rml::String(exePath) + "Assets/RmlUiAssets";
+	m_file_interface->SetAssetPath(assetPath);
+
+	Rml::SetRenderInterface(m_renderer.get());
+	Rml::SetSystemInterface(m_system_interface.get());
+	Rml::SetFileInterface(m_file_interface.get());
+
+	if (!Rml::Initialise())
+	{
+		app.DebugPrintf("[RmlManager] RmlUi Core failed to initialise\n");
+		return false;
+	}
+
+	// Load default fonts
+	Rml::LoadFontFace("C:/Windows/Fonts/segoeui.ttf", false);
+	Rml::LoadFontFace("C:/Windows/Fonts/segoeuib.ttf", false);
+	Rml::LoadFontFace("C:/Windows/Fonts/segoeuii.ttf", false);
+	Rml::LoadFontFace("C:/Windows/Fonts/segoeuiz.ttf", false);
+
+	// Minecraft's UI fonts (from tryashtar/minecraft-ttf)
+	if (!Rml::LoadFontFace(assetPath + "/fonts/Mojangles.ttf", "Minecraft Default", Rml::Style::FontStyle::Normal, Rml::Style::FontWeight::Normal, false))
+		app.DebugPrintf("[RmlManager] FAILED loading Mojangles.ttf\n");
+	if (!Rml::LoadFontFace(assetPath + "/fonts/MinecraftTen.ttf", "Minecraft Default", Rml::Style::FontStyle::Normal, Rml::Style::FontWeight::Bold, true))
+		app.DebugPrintf("[RmlManager] FAILED loading MinecraftTen.ttf\n");
+
+	m_context = Rml::CreateContext("main", Rml::Vector2i(viewport_width, viewport_height));
+	if (!m_context)
+	{
+		app.DebugPrintf("[RmlManager] Failed to create RmlUi context\n");
+		Rml::Shutdown();
+		return false;
+	}
+	app.DebugPrintf("[RmlManager] Context created (%dx%d)\n", viewport_width, viewport_height);
+
+	m_renderer->SetViewport(viewport_width, viewport_height);
+	m_initialised = true;
+	app.DebugPrintf("[RmlManager] Initialised (%dx%d)\n", viewport_width, viewport_height);
+	return true;
+}
+
+void RmlManager::Shutdown()
+{
+	if (!m_initialised)
+		return;
+
+	if (m_context)
+	{
+		m_context->UnloadAllDocuments();
+		Rml::RemoveContext(m_context->GetName());
+		m_context = nullptr;
+	}
+
+	Rml::Shutdown();
+
+	m_renderer.reset();
+	m_system_interface.reset();
+	m_file_interface.reset();
+
+	m_initialised = false;
+	app.DebugPrintf("[RmlManager] Shutdown\n");
+}
+
+void RmlManager::Update()
+{
+	if (!m_initialised || !m_context)
+		return;
+	m_context->Update();
+}
+
+void RmlManager::Render()
+{
+	if (!m_initialised || !m_context)
+		return;
+
+	// Ensure we render to the backbuffer (gamma post-process may have restored a
+	// different RTV). Use the singleton backbuffer RTV that the rest of the engine
+	// binds at frame start.
+	if (g_pRenderTargetView)
+	{
+		ID3D11DepthStencilView* nullDSV = nullptr;
+		g_pImmediateContext->OMSetRenderTargets(1, &g_pRenderTargetView, nullDSV);
+	}
+
+	// Clear any SRV still bound from gamma post-process so it doesn't
+	// interfere with RmlUi's own texture binding.
+	ID3D11ShaderResourceView* nullSRV[1] = { nullptr };
+	g_pImmediateContext->PSSetShaderResources(0, 1, nullSRV);
+
+	m_renderer->BeginFrame();
+
+	int docCount = 0;
+	for (int i = 0; i < m_context->GetNumDocuments(); i++)
+	{
+		auto* doc = m_context->GetDocument(i);
+		if (doc && doc->IsVisible())
+			docCount++;
+	}
+	if (docCount == 0)
+		app.DebugPrintf("[RmlManager] WARNING: No visible documents in context\n");
+
+	m_context->Render();
+	m_renderer->EndFrame();
+}
+
+void RmlManager::OnResize(int width, int height)
+{
+	if (!m_initialised || !m_context)
+		return;
+	m_context->SetDimensions(Rml::Vector2i(width, height));
+	m_renderer->SetViewport(width, height);
+}