155 lines
3.3 KiB
C++
155 lines
3.3 KiB
C++
// glshader.h
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//
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// Copyright (C) 2001-2006, Chris Laurel <claurel@shatters.net>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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#ifndef _CELENGINE_GLSHADER_H_
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#define _CELENGINE_GLSHADER_H_
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#include <Eigen/Core>
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#include <string>
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#include <vector>
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#include <iostream>
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#include <GL/glew.h>
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class GLShaderLoader;
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enum GLShaderStatus
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{
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ShaderStatus_OK,
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ShaderStatus_CompileError,
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ShaderStatus_LinkError,
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ShaderStatus_OutOfMemory,
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ShaderStatus_EmptyProgram,
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};
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class GLShader
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{
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protected:
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GLShader(GLhandleARB _id);
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virtual ~GLShader();
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public:
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GLhandleARB getID() const;
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private:
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GLhandleARB id;
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GLShaderStatus compile(const std::vector<std::string>& source);
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friend class GLShaderLoader;
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};
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class GLVertexShader : public GLShader
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{
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private:
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GLVertexShader(GLhandleARB _id) : GLShader(_id) {};
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friend class GLShaderLoader;
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};
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class GLFragmentShader : public GLShader
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{
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private:
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GLFragmentShader(GLhandleARB _id) : GLShader(_id) {};
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friend class GLShaderLoader;
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};
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class GLProgram
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{
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private:
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GLProgram(GLhandleARB _id);
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void attach(const GLShader&);
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public:
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virtual ~GLProgram();
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GLShaderStatus link();
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void use() const;
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GLhandleARB getID() const { return id; }
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private:
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GLhandleARB id;
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friend class GLShaderLoader;
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};
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class FloatShaderParameter
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{
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public:
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FloatShaderParameter();
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FloatShaderParameter(GLhandleARB _obj, const char* name);
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FloatShaderParameter& operator=(float);
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private:
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int slot;
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};
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class Vec3ShaderParameter
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{
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public:
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Vec3ShaderParameter();
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Vec3ShaderParameter(GLhandleARB _obj, const char* name);
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Vec3ShaderParameter& operator=(const Eigen::Vector3f&);
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private:
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int slot;
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};
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class Vec4ShaderParameter
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{
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public:
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Vec4ShaderParameter();
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Vec4ShaderParameter(GLhandleARB _obj, const char* name);
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Vec4ShaderParameter& operator=(const Eigen::Vector4f&);
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private:
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int slot;
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};
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class GLShaderLoader
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{
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public:
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static GLShaderStatus CreateVertexShader(const std::vector<std::string>&,
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GLVertexShader**);
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static GLShaderStatus CreateFragmentShader(const std::vector<std::string>&,
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GLFragmentShader**);
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static GLShaderStatus CreateVertexShader(const std::string&,
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GLVertexShader**);
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static GLShaderStatus CreateFragmentShader(const std::string&,
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GLFragmentShader**);
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static GLShaderStatus CreateProgram(const GLVertexShader& vs,
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const GLFragmentShader& fs,
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GLProgram**);
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static GLShaderStatus CreateProgram(const std::vector<std::string>& vs,
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const std::vector<std::string>& fs,
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GLProgram**);
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static GLShaderStatus CreateProgram(const std::string& vs,
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const std::string& fs,
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GLProgram**);
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};
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extern std::ostream* g_shaderLogFile;
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#endif // _CELENGINE_GLSHADER_H_
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