diff --git a/yg/framebuffer.cpp b/yg/framebuffer.cpp
index d6dc8f1368..65fced31af 100644
--- a/yg/framebuffer.cpp
+++ b/yg/framebuffer.cpp
@@ -129,29 +129,32 @@ namespace yg
 
     void FrameBuffer::checkStatus()
     {
+      if (!yg::gl::g_doFakeOpenGLCalls)
+      {
 #ifdef OMIM_GL_ES
-      GLenum res = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES);
-      if (res == GL_FRAMEBUFFER_UNSUPPORTED_OES)
-        LOG(LINFO, ("unsupported combination of attached target formats. could be possibly skipped"));
-      else if (res == GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES)
-        LOG(LINFO, ("incomplete attachement"));
-      else if (res == GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_OES)
-        LOG(LINFO, ("incomplete missing attachement"));
-      else if (res == GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES)
-      {
-        LOG(LINFO, ("incomplete dimensions"));
-      }
+        GLenum res = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES);
+        if (res == GL_FRAMEBUFFER_UNSUPPORTED_OES)
+          LOG(LINFO, ("unsupported combination of attached target formats. could be possibly skipped"));
+        else if (res == GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES)
+          LOG(LINFO, ("incomplete attachement"));
+        else if (res == GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_OES)
+          LOG(LINFO, ("incomplete missing attachement"));
+        else if (res == GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES)
+        {
+          LOG(LINFO, ("incomplete dimensions"));
+        }
 #else
-      GLenum res = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-      if (res == GL_FRAMEBUFFER_UNSUPPORTED)
-      {
-        LOG(LINFO, ("unsupported combination of attached target formats. could be possibly skipped"));
-      }
-      else if (res != GL_FRAMEBUFFER_COMPLETE_EXT)
-      {
-        LOG(LERROR, ("incomplete framebuffer"));
-      }
+        GLenum res = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
+        if (res == GL_FRAMEBUFFER_UNSUPPORTED)
+        {
+          LOG(LINFO, ("unsupported combination of attached target formats. could be possibly skipped"));
+        }
+        else if (res != GL_FRAMEBUFFER_COMPLETE_EXT)
+        {
+          LOG(LERROR, ("incomplete framebuffer"));
+        }
 #endif
+      }
     }
   }
 }
diff --git a/yg/internal/opengl.cpp b/yg/internal/opengl.cpp
index 72435072db..290e90de7c 100644
--- a/yg/internal/opengl.cpp
+++ b/yg/internal/opengl.cpp
@@ -12,6 +12,7 @@ namespace yg
 {
   namespace gl
   {
+    bool g_doFakeOpenGLCalls = false;
     bool g_isBufferObjectsSupported = true;
     bool g_isFramebufferSupported = true;
     bool g_isRenderbufferSupported = true;
diff --git a/yg/internal/opengl.hpp b/yg/internal/opengl.hpp
index 9938cc747f..41cfef6fec 100644
--- a/yg/internal/opengl.hpp
+++ b/yg/internal/opengl.hpp
@@ -39,6 +39,7 @@ namespace yg
 {
   namespace gl
   {
+    extern bool g_doFakeOpenGLCalls; //< for testing support
     extern bool g_isBufferObjectsSupported;
     extern bool g_isFramebufferSupported;
     extern bool g_isRenderbufferSupported;
@@ -53,11 +54,11 @@ namespace yg
 }
 
 #ifdef DEBUG
-#define OGLCHECK(f) do {f; yg::gl::CheckError(SRC());} while(false)
-#define OGLCHECKAFTER yg::gl::CheckError(SRC())
+#define OGLCHECK(f) do {if (!g_doFakeOpenGLCalls) { f; yg::gl::CheckError(SRC()); } } while(false)
+#define OGLCHECKAFTER if (!g_doFakeOpenGLCalls) yg::gl::CheckError(SRC())
 #define EGLCHECK do {yg::gl::CheckEGLError(SRC());} while(false)
 #else
-#define OGLCHECK(f) f
+#define OGLCHECK(f) if (!g_doFakeOpenGLCalls) f
 #define OGLCHECKAFTER
 #define EGLCHECK
 #endif