Removes GetDeviceCommandContext call from CFont

We need remove all occurences of GetDeviceCommandContext to be able to
add multithreading support in the future.

source/graphics/Font.cpp

@@ -1,4 +1,4 @@
-/* Copyright (C) 2025 Wildfire Games.
+/* Copyright (C) 2026 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -159,7 +159,9 @@ void CFont::CalculateStringSize(const wchar_t* string, float& width, float& heig
 		height += GetHeight();
 }
 
-bool CFont::SetFontParams(const std::string& fontName, float size, float strokeWidth, float scale)
+bool CFont::SetFontParams(
+	Renderer::Backend::IDevice* device, const std::string& fontName,
+	float size, float strokeWidth, float scale)
 {
 	ENSURE(m_FontSize == 0 && size > 0);
 
@@ -181,7 +183,7 @@ bool CFont::SetFontParams(const std::string& fontName, float size, float strokeW
 		FT_Stroker_Set(m_Stroker.get(), FloatToF26Dot6(m_StrokeWidth), FT_STROKER_LINECAP_ROUND, FT_STROKER_LINEJOIN_ROUND, 0);
 	}
 
-	if (!ConstructAtlasTexture())
+	if (!ConstructAtlasTexture(device))
 	{
 		LOGERROR("Failed to create font texture atlas %s", fontName);
 		return false;
@@ -263,10 +265,8 @@ Renderer::Backend::Sampler::Desc CFont::ChooseTextureFormatAndSampler()
 	return defaultSamplerDesc;
 }
 
-bool CFont::ConstructAtlasTexture()
+bool CFont::ConstructAtlasTexture(Renderer::Backend::IDevice* device)
 {
-	Renderer::Backend::IDevice* backendDevice = g_Renderer.GetDeviceCommandContext()->GetDevice();
-
 	// Make backend texture ahead of time.
 	// TODO: calculate based on device support.
 	const int textureSize{1024};
@@ -289,7 +289,7 @@ bool CFont::ConstructAtlasTexture()
 	PS::StringBuilder fontTextureNameBuilder{{std::begin(buffer), std::end(buffer)}};
 	fontTextureNameBuilder.Append("Font Texture ");
 	fontTextureNameBuilder.Append(m_FontName);
-	m_Texture = g_Renderer.GetTextureManager().WrapBackendTexture(backendDevice->CreateTexture2D(
+	m_Texture = g_Renderer.GetTextureManager().WrapBackendTexture(device->CreateTexture2D(
 		fontTextureNameBuilder.Str().data(),
 		Renderer::Backend::ITexture::Usage::TRANSFER_DST |
 			Renderer::Backend::ITexture::Usage::SAMPLED,

source/graphics/Font.h

@@ -39,6 +39,7 @@
 #include <vector>
 
 class CVector2D;
+namespace Renderer::Backend { class IDevice; }
 namespace Renderer::Backend { class IDeviceCommandContext; }
 namespace Renderer::Backend::Sampler { struct Desc; }
 
@@ -137,7 +138,9 @@ private:
 	friend class CFontManager;
 
 	bool AddFontFromPath(const OsPath& fontPath);
-	bool SetFontParams(const std::string& fontName, float size, float strokeWidth, float scale);
+	bool SetFontParams(
+		Renderer::Backend::IDevice* device, const std::string& fontName,
+		float size, float strokeWidth, float scale);
 
 	void BlendGlyphBitmapToTexture(const FT_Bitmap& bitmap, int targetX, int targetY, u8 r, u8 g, u8 b);
 	void BlendGlyphBitmapToTextureRGBA(const FT_Bitmap& bitmap, int targetX, int targetY, u8 r, u8 g, u8 b);
@@ -147,7 +150,7 @@ private:
 	std::optional<CVector2D> GenerateGlyphBitmap(FT_Glyph& glyph, u16 codepoint, FT_Render_Mode renderMode, CVector2D offset, const float baselineInAtlas);
 
 	const GlyphData* ExtractAndGenerateGlyph(u16 codepoint);
-	bool ConstructAtlasTexture();
+	bool ConstructAtlasTexture(Renderer::Backend::IDevice* device);
 	Renderer::Backend::Sampler::Desc ChooseTextureFormatAndSampler();
 
 	CTexturePtr m_Texture;

source/graphics/FontManager.cpp

@@ -1,4 +1,4 @@
-/* Copyright (C) 2025 Wildfire Games.
+/* Copyright (C) 2026 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -101,12 +101,13 @@ FontSpec ParseFontSpec(const std::string& spec)
 }
 } // namespace
 
-CFontManager::CFontManager()
+CFontManager::CFontManager(Renderer::Backend::IDevice* device)
 	: m_GUIScaleHook{std::make_unique<CConfigDBHook>(g_ConfigDB.RegisterHookAndCall(
 		"gui.scale", [this]()
 		{
 			m_GUIScale = g_ConfigDB.Get("gui.scale", 1.0f);
-		}))}
+		}))},
+	m_Device(device)
 {
 	FT_Library lib;
 	FT_Error error{FT_Init_FreeType(&lib)};
@@ -211,7 +212,7 @@ CFont* CFontManager::LoadFont(CStrIntern fontName, CStrIntern locale)
 
 	CFont font{this->m_FreeType.get(), *m_GammaCorrectionLUT};
 
-	if (!font.SetFontParams(localeFontName.string(), fontSpec.size, fontSpec.stroke ? 1.0f : 0.0f, m_GUIScale))
+	if (!font.SetFontParams(m_Device, localeFontName.string(), fontSpec.size, fontSpec.stroke ? 1.0f : 0.0f, m_GUIScale))
 	{
 		LOGERROR("Failed to set font params for %s", localeFontName.string().c_str());
 		return nullptr;

source/graphics/FontManager.h

@@ -1,4 +1,4 @@
-/* Copyright (C) 2025 Wildfire Games.
+/* Copyright (C) 2026 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -31,6 +31,7 @@ class CConfigDBHook;
 class CFont;
 struct FT_LibraryRec_;
 
+namespace Renderer::Backend { class IDevice; }
 namespace Renderer::Backend { class IDeviceCommandContext; }
 
 /**
@@ -39,7 +40,7 @@ namespace Renderer::Backend { class IDeviceCommandContext; }
 class CFontManager
 {
 public:
-	CFontManager();
+	CFontManager(Renderer::Backend::IDevice* device);
 	~CFontManager();
 	NONCOPYABLE(CFontManager);
 
@@ -63,6 +64,8 @@ private:
 	float m_GUIScale{1.0f};
 	std::unique_ptr<CConfigDBHook> m_GUIScaleHook;
 
+	Renderer::Backend::IDevice* m_Device;
+
 	/*
 	* Most monitors today use 2.2 as the standard gamma.
 	* MacOS may use 2.2 or 1.8 in some cases.

source/renderer/Renderer.cpp

@@ -322,7 +322,7 @@ public:
 		deviceCommandContext(device->CreateCommandContext()),
 		IsOpen(false), ShadersDirty(true), profileTable(g_Renderer.m_Stats, linearAllocator),
 		shaderManager(device), textureManager(g_VFS, false, device), vertexBufferManager(device),
-		postprocManager(device), sceneRenderer(device)
+		postprocManager(device), sceneRenderer(device), fontManager(device)
 	{
 	}
 };