Add a GR for GI in central_settings

src/graphics/central_settings.cpp

@@ -27,6 +27,7 @@ void CentralVideoSettings::init()
     hasTextureCompression = false;
     hasUBO = false;
     hasGS = false;
+    m_GI_has_artifact = false;
 
     m_need_rh_workaround = false;
     m_need_srgb_workaround = false;
@@ -140,6 +141,11 @@ void CentralVideoSettings::init()
             UserConfigParams::m_high_definition_textures = 0x00;
         }
 
+        if (!GraphicsRestrictions::isDisabled(GraphicsRestrictions::GR_GI))
+        {
+            m_GI_has_artifact = true;
+        }
+
         // Specific disablement
         if (strstr((const char *)glGetString(GL_VENDOR), "NVIDIA") != NULL)
         {
@@ -263,7 +269,7 @@ bool CentralVideoSettings::supportsShadows() const
 
 bool CentralVideoSettings::supportsGlobalIllumination() const
 {
-    return isARBGeometryShader4Usable() && isARBUniformBufferObjectUsable();
+    return isARBGeometryShader4Usable() && isARBUniformBufferObjectUsable() && !m_GI_has_artifact;
 }
 
 bool CentralVideoSettings::supportsIndirectInstancingRendering() const

src/graphics/central_settings.hpp

@@ -26,6 +26,7 @@ private:
 
     bool m_need_rh_workaround;
     bool m_need_srgb_workaround;
+    bool m_GI_has_artifact;
 public:
     void init();
     bool isGLSL() const;

src/graphics/graphics_restrictions.cpp

@@ -59,6 +59,7 @@ namespace GraphicsRestrictions
             "HighDefinitionTextures",
             "AdvancedPipeline",
             "FramebufferSRGBWorking",
+            "GI",
         };
     }   // namespace Private
     using namespace Private;

src/graphics/graphics_restrictions.hpp

@@ -53,6 +53,7 @@ namespace GraphicsRestrictions
         GR_HIGHDEFINITION_TEXTURES,
         GR_ADVANCED_PIPELINE,
         GR_FRAMEBUFFER_SRGB_WORKING,
+        GR_GI,
         GR_COUNT  /** MUST be last entry. */
     } ;