shader_object.h

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/*
**  ClanLib SDK
**  Copyright (c) 1997-2009 The ClanLib Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries ClanLib may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
**    Harry Storbacka
**    Kenneth Gangstoe
*/


#pragma once

#include "../../Core/System/sharedptr.h"
#include "../../Core/IOData/virtual_directory.h"
#include "graphic_context.h"
#include "../api_display.h"
#include <vector>

class CL_GraphicContextProvider;
class CL_ResourceManager;
class CL_ShaderObject_Impl;

enum CL_ShaderType
{
        cl_shadertype_vertex,
        cl_shadertype_fragment
};

class CL_API_DISPLAY CL_ShaderObject
{

public:
        CL_ShaderObject(CL_GraphicContext &gc, CL_ShaderType type, const CL_StringRef &source);

        CL_ShaderObject(CL_GraphicContext &gc, CL_ShaderType type, const std::vector<CL_StringRef> &sources);

        CL_ShaderObject(CL_GraphicContextProvider *gc_provider, CL_ShaderType type, const CL_StringRef &source);

        CL_ShaderObject(CL_GraphicContextProvider *gc_provider, CL_ShaderType type, const std::vector<CL_StringRef> &sources);

        static CL_ShaderObject load(CL_GraphicContext &gc, const CL_StringRef &resource_id, CL_ResourceManager *resources);

        static CL_ShaderObject load(CL_GraphicContext &gc, CL_ShaderType type, const CL_StringRef &filename, const CL_VirtualDirectory &directory);

        static CL_ShaderObject load(CL_GraphicContext &gc, CL_ShaderType type, const CL_StringRef &fullname);

        static CL_ShaderObject load(CL_GraphicContext &gc, CL_ShaderType type, CL_IODevice &file);

        static CL_ShaderObject load_and_compile(CL_GraphicContext &gc, CL_ShaderType type, const CL_StringRef &filename, const CL_VirtualDirectory &directory);

        static CL_ShaderObject load_and_compile(CL_GraphicContext &gc, CL_ShaderType type, const CL_StringRef &filename);

        static CL_ShaderObject load_and_compile(CL_GraphicContext &gc, CL_ShaderType type, CL_IODevice &file);

        virtual ~CL_ShaderObject();


public:
        unsigned int get_handle() const;

        CL_ShaderType get_shader_type() const;

        CL_String get_info_log() const;

        CL_String get_shader_source() const;


public:
        bool operator==(const CL_ShaderObject &other) const;


        bool compile();


private:
        CL_SharedPtr<CL_ShaderObject_Impl> impl;
};

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