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Diffstat (limited to 'src/graphics/GLShaderParam.h')
-rw-r--r-- | src/graphics/GLShaderParam.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/graphics/GLShaderParam.h b/src/graphics/GLShaderParam.h new file mode 100644 index 0000000..40cec61 --- /dev/null +++ b/src/graphics/GLShaderParam.h @@ -0,0 +1,128 @@ +// +// 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 + |