Added information about graphics card to error message

src/graphics/opengl/gl21device.cpp

@@ -191,7 +191,8 @@ bool CGL21Device::Create()
             GetLogger()->Error("OpenGL 2.0 or newer is required to use this engine.\n");
             m_errorMessage = "It seems your graphics card does not support OpenGL 2.0.\n";
             m_errorMessage += "Please make sure you have appropriate hardware and newest drivers installed.\n";
-            m_errorMessage += "(OpenGL 2.0 is roughly equivalent to Direct3D 9)";
+            m_errorMessage += "(OpenGL 2.0 is roughly equivalent to Direct3D 9)\n\n";
+            m_errorMessage += GetHardwareInfo(false);
             return false;
         }
 

src/graphics/opengl/gl33device.cpp

@@ -192,7 +192,8 @@ bool CGL33Device::Create()
             GetLogger()->Error("OpenGL 3.0 or newer is required to use this engine.\n");
             m_errorMessage = "It seems your graphics card does not support OpenGL 3.0.\n";
             m_errorMessage += "Please make sure you have appropriate hardware and newest drivers installed.\n";
-            m_errorMessage += "(OpenGL 3.0 is roughly equivalent to Direct3D 10)";
+            m_errorMessage += "(OpenGL 3.0 is roughly equivalent to Direct3D 10)\n\n";
+            m_errorMessage += GetHardwareInfo(false);
             return false;
         }
         else if (glVersion < 33)

src/graphics/opengl/gldevice.cpp

@@ -187,7 +187,8 @@ bool CGLDevice::Create()
             GetLogger()->Error("Unsupported OpenGL version: %d.%d\n", m_glMajor, m_glMinor);
             GetLogger()->Error("OpenGL 1.3 or newer is required to use this engine.\n");
             m_errorMessage = "It seems your graphics card does not support OpenGL 1.3.\n";
-            m_errorMessage += "Please make sure you have appropriate hardware and newest drivers installed.\n";
+            m_errorMessage += "Please make sure you have appropriate hardware and newest drivers installed.\n\n";
+            m_errorMessage += GetHardwareInfo(false);
             return false;
         }
 

src/graphics/opengl/glutil.cpp

@@ -73,6 +73,30 @@ int GetOpenGLVersion()
     return 10 * major + minor;
 }
 
+std::string GetHardwareInfo(bool full)
+{
+    int glversion = GetOpenGLVersion();
+
+    const char* version = reinterpret_cast<const char*>(glGetString(GL_VERSION));
+    const char* vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
+    const char* renderer = reinterpret_cast<const char*>(glGetString(GL_RENDERER));
+
+    std::string result;
+
+    result += std::string("Hardware information:\n\n");
+    result += "Version:\t" + std::string(version) + '\n';
+    result += "Vendor:\t" + std::string(vendor) + '\n';
+    result += "Renderer:\t" + std::string(renderer) + '\n';
+
+    if (glversion >= 20)
+    {
+        const char* glslVersion = reinterpret_cast<const char*>(glGetString(GL_SHADING_LANGUAGE_VERSION));
+        result += "Shading Language:\t" + std::string(glslVersion) + '\n';
+    }
+
+    return result;
+}
+
 GLenum TranslateGfxPrimitive(PrimitiveType type)
 {
     GLenum flag = 0;

src/graphics/opengl/glutil.h

@@ -30,6 +30,7 @@
 
 #include <GL/glew.h>
 
+#include <string>
 #include <memory>
 
 
@@ -53,6 +54,9 @@ std::unique_ptr<CDevice> CreateDevice(const DeviceConfig &config, const std::str
 // First digit is major part, second digit is minor part.
 int GetOpenGLVersion();
 
+//! Returns information about graphics card
+std::string GetHardwareInfo(bool full);
+
 //! Translate Gfx primitive type to OpenGL primitive type
 GLenum TranslateGfxPrimitive(PrimitiveType type);