MercuryOGL.h

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#ifndef MERCURYOGL_H
#define MERCURYOGL_H

#include "MercuryWindow.h"

#if defined (WIN32)
#include "Win32Window.h"
#include <GL/glaux.h>
#endif

#include "MercuryDisplay.h"
#include "MercuryMesh.h"

#include <GL/gl.h>

class MercuryOGLGLSLangObject
{
public:
    int id;
    int primaryTexture;
};

class MercuryTexture;

class MercuryOGLFBOObject
{
public:
    unsigned int colorID;
    unsigned int depthID;
};

class MercuryOGLFBOCubeObject
{
public:
    unsigned int colorID[6];
    unsigned int depthID[6];
};



class MercuryOGL : public MercuryDisplay
{
    public:
        MercuryOGL();
        virtual ~MercuryOGL();
        virtual bool MakeWindow(const char* title, int width, int height, int bits, bool fullscreenflag);
        virtual bool Init(const MString& name, unsigned int width, unsigned int height, unsigned short bpp, bool fullscreen);
        virtual bool BeginFrame();
        virtual bool EndFrame();
        virtual void DrawParticleField(const MercuryParticleField* field);
        virtual void DrawMesh(const MercuryMesh& mesh);
        virtual void DrawSprite(const MercuryMesh& sprite);
        virtual void GenerateVBO(MercuryMesh& mesh);
        virtual void DestroyVBO(MercuryMesh& mesh);

        virtual void SetMaterial(const MercuryMaterial* material);
        virtual void RendererInfo();

        virtual void ClearZBuffer() { glClear(GL_DEPTH_BUFFER_BIT); }
        virtual void ClearFrameBuffer() { glClear(GL_COLOR_BUFFER_BIT); }

        //The following functions are used in managers      
        virtual void DeleteTextures(int n, unsigned int* textureNames);

        virtual void UpdateTextureData(MercuryTexture* texture, unsigned int& ID) {};
        virtual void CreateCache(RawImageData* data, unsigned int& ID);
        virtual void CreateCache(RawImageData* data, unsigned int& ID, bool isMipmap);

        virtual void Viewport(int x, int y, int width, int height) { MercuryDisplay::Viewport(x, y, width, height); glViewport(x, y, width, height); }

        virtual void EnableTextures(MercuryMaterial* material);
        virtual void EnableShaders(MercuryMaterial* material);


        virtual void ErrorCheck();

        virtual void ReadFrameBuffer(RawImageData& image);

        virtual void SendMatrixData(const MercuryMatrix& m);
        virtual void SendProjectionMatrixData();

        virtual void StencilOp(STENCILOPS fail, STENCILOPS zfail, STENCILOPS zpass);
        virtual void CullBackface(bool toggle);
        virtual void StencilFunc(TFUNCT func, int ref, unsigned int zref);

        virtual int CompileShader(MString vertStr, MString fragStr);
        virtual void DestroyShaderProgram(int shaderID);

        virtual void DefineClippingPlanes(const MVector<MQuaternion>& planes);

        virtual void RenderTranslucentObject();
        virtual void RenderText(const MercuryText& text);
        virtual MercuryGLState SetStates(MercuryGLState states);

    private:
        void BindShader(int shaderID);
        void ProcessTexture(MercuryTexture* texture);
        int ConvertDrawType(DRAWTYPES drawtype);
        virtual void ProcessLightsInternal( const MercuryLight* light[3], unsigned int count );
        void CompileShader(unsigned int shaderDesc);
        int ConvertStencilOp(STENCILOPS op) const;
        int ConvertTestFunction(TFUNCT funct) const;
        void SetUniformVariables(MercuryMaterial* material);
        void TestCapabilities();
        void LoadImageData(RawImageData* data, bool isMipmap);

        //pixelshader description to glslang object mapping
        map <int, MercuryOGLGLSLangObject> m_shaderObjMap;

        unsigned int m_arrayDrawType;
        int m_shaderProgramID;
        int m_NumEnabledLights;
        GLuint m_pixelFormat;
        bool active;

        bool isLockRendering;

        bool isRenderingToDynamicTexture;
        map <int, MercuryOGLFBOObject> m_fboMap;

        bool isRenderingToDynamicCubeMap;
        map <int, MercuryOGLFBOCubeObject> m_fboCubeMap;

        MercuryTexture* m_pCurRenderTex;
};

#endif

/* 
 * Copyright (c) 2005-2006, Joshua Allen
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *  -   Redistributions of source code must retain the above
 *      copyright notice, this list of conditions and the following disclaimer.
 *  -   Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the distribution.
 *  -   Neither the name of the Mercury Engine nor the names of its
 *      contributors may be used to endorse or promote products derived from
 *      this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

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