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142 lines
3.7 KiB
C++
142 lines
3.7 KiB
C++
// ==============================================================
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// This file is part of MegaGlest (www.glest.org)
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//
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// ArbProgram.h -- Copyright (c) 2007 David Henry
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// changed for use with MegaGlest: Copyright (C) 2011- by Mark Vejvoda
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//
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// This code is licenced under the MIT license.
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//
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// This software is provided "as is" without express or implied
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// warranties. You may freely copy and compile this source into
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// applications you distribute provided that the copyright text
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// below is included in the resulting source code.
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//
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// Definitions of ARB program related classes.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef __ARB_PROGRAM_H__
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#define __ARB_PROGRAM_H__
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#endif // _WIN32
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#include <GL/glew.h>
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#include <stdexcept>
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#include <string>
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namespace Shared { namespace Graphics { namespace md5 {
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using std::string;
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/////////////////////////////////////////////////////////////////////////////
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// ARB Program class diagram:
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//
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// +---------- (abs)
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// | ArbProgram |
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// +--------------+
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// ^
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// |
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// +-------------+-------------+
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// | |
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// +------------------+ +--------------------+
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// | ArbVertexProgram | | ArbFragmentProgram |
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// +------------------+ +--------------------+
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//
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/////////////////////////////////////////////////////////////////////////////
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// Global functions for initializing ARB program extensions and query for
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// vertex and fragment program support on the host.
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GLboolean hasArbVertexProgramSupport();
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GLboolean hasArbFragmentProgramSupport();
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void initArbProgramHandling();
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/////////////////////////////////////////////////////////////////////////////
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//
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// class ArbProgram -- ARB Program abstract object. Can be a vertex program
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// or a fragment program.
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//
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/////////////////////////////////////////////////////////////////////////////
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class ArbProgram
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{
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protected:
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// Constructor
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ArbProgram (const string &filename);
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public:
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// Destructor
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virtual ~ArbProgram ();
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public:
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// Accessors
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const string &name () const { return _name; }
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const string &code () const { return _code; }
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GLuint handle () const { return _handle; }
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bool fail () const { return _fail; }
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virtual GLenum programType () const = 0;
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public:
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// Public interface
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void use () const;
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void unuse () const;
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protected:
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// Internal functions
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void printProgramString (int errPos);
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void load ()
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throw (std::runtime_error);
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void loadProgramFile (const string &filename)
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throw (std::runtime_error);
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protected:
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// Member variables
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string _name;
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string _code;
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GLuint _handle;
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GLboolean _fail;
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};
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/////////////////////////////////////////////////////////////////////////////
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//
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// class ArbVertexProgram -- ARB vertex program object.
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//
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/////////////////////////////////////////////////////////////////////////////
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class ArbVertexProgram : public ArbProgram
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{
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public:
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// Constructor
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ArbVertexProgram (const string &filename);
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public:
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// Return the program enum type
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virtual GLenum programType () const {
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return GL_VERTEX_PROGRAM_ARB;
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}
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};
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/////////////////////////////////////////////////////////////////////////////
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//
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// class ArbFragmentProgram -- ARB fragment program object.
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//
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/////////////////////////////////////////////////////////////////////////////
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class ArbFragmentProgram : public ArbProgram
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{
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public:
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// Constructor
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ArbFragmentProgram (const string &filename);
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public:
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// Return the program enum type
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virtual GLenum programType () const {
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return GL_FRAGMENT_PROGRAM_ARB;
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}
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};
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}}} //end namespace
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#endif // __ARB_PROGRAM_H__
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