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diff --git a/src/graphics/GLShaderParam.h b/src/graphics/GLShaderParam.h
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+//
+// libavg - Media Playback Engine.
+// Copyright (C) 2003-2014 Ulrich von Zadow
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// Current versions can be found at www.libavg.de
+//
+
+#ifndef _GLShaderParam_H_
+#define _GLShaderParam_H_
+
+#include "../api.h"
+#include "OGLHelper.h"
+#include "Pixel32.h"
+#include "GLContext.h"
+
+#include "../base/GLMHelper.h"
+#include "../base/Exception.h"
+
+#include <boost/shared_ptr.hpp>
+
+#include <string>
+
+namespace avg {
+
+class OGLShader;
+typedef boost::shared_ptr<OGLShader> OGLShaderPtr;
+
+class AVG_API GLShaderParam
+{
+public:
+ GLShaderParam(OGLShader* pShader, const std::string& sName);
+ virtual ~GLShaderParam() {};
+
+ const std::string& getName() const;
+
+protected:
+ int getLocation() const;
+
+private:
+ std::string m_sName;
+ int m_Location;
+};
+
+
+template<class VAL_TYPE>
+class AVG_TEMPLATE_API GLShaderParamTemplate: public GLShaderParam
+{
+public:
+ GLShaderParamTemplate(OGLShader* pShader, const std::string& sName)
+ : GLShaderParam(pShader, sName),
+ m_bValSet(false)
+ {};
+
+ void set(const VAL_TYPE& val)
+ {
+ if (!m_bValSet || m_Val != val) {
+ uniformSet(getLocation(), val);
+ GLContext::checkError("OGLShaderParam::set");
+ m_Val = val;
+ m_bValSet = true;
+ }
+ };
+
+private:
+ void uniformSet(unsigned location, const VAL_TYPE& val)
+ {
+ AVG_ASSERT_MSG(false,
+ getName()+"GLShaderParam::uniformSet() called for unsupported type.");
+ };
+
+ bool m_bValSet;
+ VAL_TYPE m_Val;
+};
+
+template<>
+void GLShaderParamTemplate<int>::uniformSet(unsigned location, const int& val);
+template<>
+void GLShaderParamTemplate<float>::uniformSet(unsigned location, const float& val);
+template<>
+void GLShaderParamTemplate<glm::vec2>::uniformSet(unsigned location,
+ const glm::vec2& val);
+template<>
+void GLShaderParamTemplate<Pixel32>::uniformSet(unsigned location, const Pixel32& val);
+template<>
+void GLShaderParamTemplate<glm::vec4>::uniformSet(unsigned location,
+ const glm::vec4& val);
+template<>
+void GLShaderParamTemplate<glm::mat4>::uniformSet(unsigned location,
+ const glm::mat4& val);
+
+typedef boost::shared_ptr<GLShaderParam> GLShaderParamPtr;
+
+typedef GLShaderParamTemplate<int> IntGLShaderParam;
+typedef boost::shared_ptr<IntGLShaderParam> IntGLShaderParamPtr;
+
+typedef GLShaderParamTemplate<float> FloatGLShaderParam;
+typedef boost::shared_ptr<FloatGLShaderParam> FloatGLShaderParamPtr;
+
+typedef GLShaderParamTemplate<glm::vec2> Vec2fGLShaderParam;
+typedef boost::shared_ptr<Vec2fGLShaderParam> Vec2fGLShaderParamPtr;
+
+typedef GLShaderParamTemplate<Pixel32> ColorGLShaderParam;
+typedef boost::shared_ptr<ColorGLShaderParam> ColorGLShaderParamPtr;
+
+typedef GLShaderParamTemplate<glm::vec4> Vec4fGLShaderParam;
+typedef boost::shared_ptr<Vec4fGLShaderParam> Vec4fGLShaderParamPtr;
+
+typedef GLShaderParamTemplate<glm::mat4> Mat4fGLShaderParam;
+typedef boost::shared_ptr<Mat4fGLShaderParam> Mat4fGLShaderParamPtr;
+
+}
+
+#endif
+