Merge #3745

3745: Print GPU info into console r=def- a=Jupeyy


![screenshot_2021-03-26_11-38-30](https://user-images.githubusercontent.com/6654924/112619605-d1d1fa00-8e27-11eb-93e5-94f7bddb6e49.png)


## Checklist

- [x] Tested the change ingame
- [x] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test if it works standalone, system.c especially
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Jupeyy <jupjopjap@gmail.com>

src/engine/client/backend_sdl.cpp

@@ -3785,6 +3785,13 @@ void CCommandProcessorFragment_SDL::Cmd_Init(const SCommand_Init *pCommand)
 	// check what this context can do
 	const char *pVersionString = (const char *)glGetString(GL_VERSION);
 	dbg_msg("opengl", "Version string: %s", pVersionString);
+
+	const char *pRendererString = (const char *)glGetString(GL_RENDERER);
+
+	str_copy(pCommand->m_pVendorString, pVendorString, gs_GPUInfoStringSize);
+	str_copy(pCommand->m_pVersionString, pVersionString, gs_GPUInfoStringSize);
+	str_copy(pCommand->m_pRendererString, pRendererString, gs_GPUInfoStringSize);
+
 	// parse version string
 	ParseVersionString(pVersionString, pCommand->m_pCapabilities->m_ContextMajor, pCommand->m_pCapabilities->m_ContextMinor, pCommand->m_pCapabilities->m_ContextPatch);
 
@@ -4614,6 +4621,9 @@ int CGraphicsBackend_SDL_OpenGL::Init(const char *pName, int *Screen, int *pWidt
 	CmdSDL.m_GlewPatch = GlewPatch;
 	CmdSDL.m_pInitError = &InitError;
 	CmdSDL.m_pErrStringPtr = &pErrorStr;
+	CmdSDL.m_pVendorString = m_aVendorString;
+	CmdSDL.m_pVersionString = m_aVersionString;
+	CmdSDL.m_pRendererString = m_aRendererString;
 	CmdBuffer.AddCommand(CmdSDL);
 	RunBuffer(&CmdBuffer);
 	WaitForIdle();

src/engine/client/backend_sdl.h

@@ -433,6 +433,10 @@ public:
 
 		int *m_pInitError;
 
+		char *m_pVendorString;
+		char *m_pVersionString;
+		char *m_pRendererString;
+
 		int m_RequestedMajor;
 		int m_RequestedMinor;
 		int m_RequestedPatch;
@@ -486,6 +490,8 @@ public:
 	virtual void RunBuffer(CCommandBuffer *pBuffer);
 };
 
+static constexpr size_t gs_GPUInfoStringSize = 256;
+
 // graphics backend implemented with SDL and OpenGL
 class CGraphicsBackend_SDL_OpenGL : public CGraphicsBackend_Threaded
 {
@@ -497,6 +503,10 @@ class CGraphicsBackend_SDL_OpenGL : public CGraphicsBackend_Threaded
 
 	SBackendCapabilites m_Capabilites;
 
+	char m_aVendorString[gs_GPUInfoStringSize] = {};
+	char m_aVersionString[gs_GPUInfoStringSize] = {};
+	char m_aRendererString[gs_GPUInfoStringSize] = {};
+
 	bool m_UseNewOpenGL;
 
 	char m_aErrorString[256];
@@ -536,6 +546,21 @@ public:
 
 		return NULL;
 	}
+
+	virtual const char *GetVendorString()
+	{
+		return m_aVendorString;
+	}
+
+	virtual const char *GetVersionString()
+	{
+		return m_aVersionString;
+	}
+
+	virtual const char *GetRendererString()
+	{
+		return m_aRendererString;
+	}
 };
 
 #endif // ENGINE_CLIENT_BACKEND_SDL_H

src/engine/client/graphics_threaded.cpp

@@ -2388,6 +2388,19 @@ int CGraphics_Threaded::Init()
 		0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0xff};
 
 	m_InvalidTexture = LoadTextureRaw(4, 4, CImageInfo::FORMAT_RGBA, s_aNullTextureData, CImageInfo::FORMAT_RGBA, TEXLOAD_NORESAMPLE);
+
+	ColorRGBA GPUInfoPrintColor{0.6f, 0.5f, 1.0f, 1.0f};
+
+	char aBuf[256];
+	str_format(aBuf, sizeof(aBuf), "GPU vendor: %s", GetVendorString());
+	m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "gfx", aBuf, GPUInfoPrintColor);
+
+	str_format(aBuf, sizeof(aBuf), "GPU renderer: %s", GetRendererString());
+	m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "gfx", aBuf, GPUInfoPrintColor);
+
+	str_format(aBuf, sizeof(aBuf), "GPU version: %s", GetVersionString());
+	m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "gfx", aBuf, GPUInfoPrintColor);
+
 	return 0;
 }
 
@@ -2591,6 +2604,21 @@ SWarning *CGraphics_Threaded::GetCurWarning()
 	}
 }
 
+const char *CGraphics_Threaded::GetVendorString()
+{
+	return m_pBackend->GetVendorString();
+}
+
+const char *CGraphics_Threaded::GetVersionString()
+{
+	return m_pBackend->GetVersionString();
+}
+
+const char *CGraphics_Threaded::GetRendererString()
+{
+	return m_pBackend->GetRendererString();
+}
+
 int CGraphics_Threaded::GetVideoModes(CVideoMode *pModes, int MaxModes, int Screen)
 {
 	if(g_Config.m_GfxDisplayAllModes)

src/engine/client/graphics_threaded.h

@@ -675,6 +675,10 @@ public:
 	virtual bool HasQuadContainerBuffering() { return false; }
 	virtual bool Has2DTextureArrays() { return false; }
 	virtual const char *GetErrorString() { return NULL; }
+
+	virtual const char *GetVendorString() = 0;
+	virtual const char *GetVersionString() = 0;
+	virtual const char *GetRendererString() = 0;
 };
 
 class CGraphics_Threaded : public IEngineGraphics
@@ -1150,6 +1154,10 @@ public:
 	bool IsTextBufferingEnabled() override { return m_OpenGLTextBufferingEnabled; }
 	bool IsQuadContainerBufferingEnabled() override { return m_OpenGLQuadContainerBufferingEnabled; }
 	bool HasTextureArrays() override { return m_OpenGLHasTextureArrays; }
+
+	const char *GetVendorString() override;
+	const char *GetVersionString() override;
+	const char *GetRendererString() override;
 };
 
 extern IGraphicsBackend *CreateGraphicsBackend();

src/engine/graphics.h

@@ -276,6 +276,10 @@ public:
 	virtual bool IsQuadContainerBufferingEnabled() = 0;
 	virtual bool HasTextureArrays() = 0;
 
+	virtual const char *GetVendorString() = 0;
+	virtual const char *GetVersionString() = 0;
+	virtual const char *GetRendererString() = 0;
+
 	struct CLineItem
 	{
 		float m_X0, m_Y0, m_X1, m_Y1;