OgreGLStateCacheManager.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2013 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/

#ifndef __GLStateCacheManager_H__
#define __GLStateCacheManager_H__

#include "OgreGLPrerequisites.h"
#include "OgreStdHeaders.h"
#include "OgreIteratorWrappers.h"

typedef Ogre::GeneralAllocatedObject StateCacheAlloc;

namespace Ogre
{
    class GLStateCacheManagerImp;

    class _OgreGLExport GLStateCacheManager : public StateCacheAlloc
    {
    private:
        GLStateCacheManagerImp* mImp;
        typedef map<intptr_t, GLStateCacheManagerImp*>::type CachesMap;
        typedef MapIterator<CachesMap> CachesMapIterator;

        CachesMap mCaches;

    public:
        GLStateCacheManager(void);
        ~GLStateCacheManager(void);

        void unregisterContext (intptr_t id);

        void switchContext (intptr_t id);
        
        void clearCache();
        
        void bindGLBuffer(GLenum target, GLuint buffer, bool force = false);

        void deleteGLBuffer(GLenum target, GLuint buffer, bool force = false);

        void bindGLTexture(GLenum target, GLuint texture);

        void invalidateStateForTexture(GLuint texture);

        void setTexParameteri(GLenum target, GLenum pname, GLint param);

        bool activateGLTextureUnit(size_t unit);

        GLenum getBlendEquation(void) const;

        void setBlendEquation(GLenum eq);

        void setBlendEquation(GLenum eqRGB, GLenum eqA);

        void setBlendFunc(GLenum source, GLenum dest);

        void setShadeModel(GLenum model);

        void setLightAmbient(GLfloat r, GLfloat g, GLfloat b);

        GLboolean getDepthMask(void) const;

        void setDepthMask(GLboolean mask);

        GLenum getDepthFunc(void) const;

        void setDepthFunc(GLenum func);

        GLclampf getClearDepth(void) const;

        void setClearDepth(GLclampf depth);

        void setClearColour(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);

        vector<GLboolean>::type & getColourMask(void) const;

        void setColourMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);

        GLuint getStencilMask(void) const;

        void setStencilMask(GLuint mask);

        void setEnabled(GLenum flag);

        void setDisabled(GLenum flag);

        unsigned int getDiscardBuffers(void) const;

        void setDiscardBuffers(unsigned int flags);

        GLenum getPolygonMode(void) const;

        void setPolygonMode(GLenum mode);

        GLenum getCullFace(void) const;

        void setCullFace(GLenum face);

        void enableTextureCoordGen(GLenum type);
        void disableTextureCoordGen(GLenum type);

        // Set material lighting parameters
        void setMaterialAmbient(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
        void setMaterialDiffuse(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
        void setMaterialEmissive(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
        void setMaterialSpecular(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
        void setMaterialShininess(GLfloat shininess);
        void setPointSize(GLfloat size);
        void setPointParameters(GLfloat* attenuation, float minSize, float maxSize);

        void setViewport(GLint x, GLint y, GLsizei width, GLsizei height);
        void getViewport(int* array);
    };
}

#endif