Add a function that kills shaders and use it when reloading shader.

Thus there is no mesh corruption.

src/graphics/irr_driver.cpp

@@ -736,7 +736,7 @@ void IrrDriver::applyResolutionSettings()
     // FIXME: this load sequence is (mostly) duplicated from main.cpp!!
     // That's just error prone
     // (we're sure to update main.cpp at some point and forget this one...)
-
+    m_shaders->killShaders();
     // initDevice will drop the current device.
     initDevice();
 

src/graphics/irr_driver.hpp

@@ -570,7 +570,7 @@ public:
     // -----------------------------------------------------------------------
     inline video::E_MATERIAL_TYPE getShader(const ShaderType num)  {return m_shaders->getShader(num);}
     // -----------------------------------------------------------------------
-    inline void updateShaders()  {m_shaders->loadShaders();}
+    inline void updateShaders()  {m_shaders->killShaders();}
     // ------------------------------------------------------------------------
     inline video::IShaderConstantSetCallBack* getCallback(const ShaderType num)
     {

src/graphics/shaders.cpp

@@ -399,9 +399,6 @@ void Shaders::loadShaders()
     }
 
     initGL();
-    // Clean alive shaders
-    for (unsigned i = 0; i < CleanTable.size(); i++)
-        CleanTable[i]();
     CleanTable.clear();
     initQuadVBO();
     initQuadBuffer();
@@ -418,6 +415,12 @@ void Shaders::loadShaders()
     UtilShader::ColoredLine::init();
 }
 
+void Shaders::killShaders()
+{
+    for (unsigned i = 0; i < CleanTable.size(); i++)
+        CleanTable[i]();
+}
+
 Shaders::~Shaders()
 {
     u32 i;

src/graphics/shaders.hpp

@@ -1039,6 +1039,7 @@ public:
     video::IShaderConstantSetCallBack * m_callbacks[ES_COUNT];
 
     void loadShaders();
+    void killShaders();
 private:
     void check(const int num) const;