quick backup

[demo] / src / shader_manager.cc

diff --git a/src/shader_manager.cc b/src/shader_manager.cc
index 7ebbce6..5444f95 100644 (file)
--- a/src/shader_manager.cc
+++ b/src/shader_manager.cc
@@ -48,6 +48,9 @@ ShaderProgram *ShaderManager::create_shader_program(const char *vname, const cha
 {
        path = std::string(gfx_get_shader_path());
 
+       if(!vname || !fname)
+               return 0;
+
        Shader *vsdr = load_shader(vname, SDR_VERTEX);
        if(!vsdr)
                return 0;