More accurate menus

Minecraft.Client/RmlManager.cpp

@@ -72,11 +72,16 @@ bool RmlManager::Init(int viewport_width, int viewport_height)
 		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);
+
+	UpdateDpRatio();
+
 	return true;
 }
 
@@ -106,6 +111,7 @@ void RmlManager::Update()
 {
 	if (!m_initialised || !m_context)
 		return;
+
 	m_context->Update();
 }
 
@@ -154,3 +160,34 @@ void RmlManager::OnResize(int width, int height)
 	m_context->SetDimensions(Rml::Vector2i(width, height));
 	m_renderer->SetViewport(width, height);
 }
+
+// GabsPuN: Taken from the Quake port as something temporary
+void RmlManager::UpdateDpRatio()
+{
+	if (!m_context)
+		return;
+
+	int width = GetSystemMetrics(SM_CXSCREEN);
+	int height = GetSystemMetrics(SM_CYSCREEN);
+
+	float scale_x = static_cast<float>(width) / 1920;
+	float scale_y = static_cast<float>(height) / 1080;
+	float base_ratio = (scale_x < scale_y) ? scale_x : scale_y;
+
+	float blend = (base_ratio > 1.0f) ? std::min(base_ratio - 1.0f, 1.0f) : 0.0f;
+	float effective_dpi = (1.0f - blend) + blend;
+
+	float auto_dp = base_ratio * effective_dpi;
+	float viewport_cap = 0.88f * static_cast<float>(height) / 850.0f;
+	if (auto_dp > viewport_cap)
+		auto_dp = viewport_cap;
+
+	float dp_ratio = auto_dp;
+
+	if (dp_ratio < 0.5f)
+		dp_ratio = 0.5f;
+	if (dp_ratio > 3.0f)
+		dp_ratio = 3.0f;
+
+	m_context->SetDensityIndependentPixelRatio(dp_ratio);
+}