Redefine shading classes: glsl program is now separate from shader

class, which are derived to manage uniform variables.

ImageShader.h

@@ -0,0 +1,25 @@
+#ifndef IMAGESHADER_H
+#define IMAGESHADER_H
+
+#include "Shader.h"
+
+class ImageShader : public Shader
+{
+public:
+
+    ImageShader();
+    virtual ~ImageShader() {}
+
+    virtual void use();
+    virtual void reset();
+
+    void setBrightness(float v);
+    void setContrast(float v);
+
+private:
+    float brightness;
+    float contrast;
+    bool imageshader_changed;
+};
+
+#endif // IMAGESHADER_H