fix small dx9 slowdown

Source/Core/VideoCommon/Src/PixelShaderManager.cpp

@@ -85,7 +85,7 @@ void PixelShaderManager::Shutdown()
 
 void PixelShaderManager::SetConstants()
 {
-	if (!g_ActiveConfig.backend_info.bSupportsGLSLUBO)
+	if (g_ActiveConfig.backend_info.APIType == API_OPENGL && !g_ActiveConfig.backend_info.bSupportsGLSLUBO)
 		Dirty();
     for (int i = 0; i < 2; ++i)
 	{

Source/Core/VideoCommon/Src/VertexShaderManager.cpp

@@ -184,7 +184,7 @@ void VertexShaderManager::Dirty()
 // TODO: A cleaner way to control the matricies without making a mess in the parameters field
 void VertexShaderManager::SetConstants()
 {
-	if (!g_ActiveConfig.backend_info.bSupportsGLSLUBO)
+	if (g_ActiveConfig.backend_info.APIType == API_OPENGL && !g_ActiveConfig.backend_info.bSupportsGLSLUBO)
 		Dirty();
 	if (nTransformMatricesChanged[0] >= 0)
 	{