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/*
 *  The ManaPlus Client
 *  Copyright (C) 2004-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2013  The ManaPlus Developers
 *
 *  This file is part of The ManaPlus Client.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef RENDER_MOBILEOPENGLGRAPHICS_H
#define RENDER_MOBILEOPENGLGRAPHICS_H

#include "main.h"
#ifdef USE_OPENGL

#include "localconsts.h"
#include "render/graphics.h"

#include "resources/fboinfo.h"

#ifdef ANDROID
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <GLES2/gl2.h>
#else
#ifndef USE_SDL2
#define GL_GLEXT_PROTOTYPES 1
#endif
#include <SDL_opengl.h>
#include <GL/glext.h>
#endif

#include <set>

class NormalOpenGLGraphicsVertexes;

class MobileOpenGLGraphics final : public Graphics
{
    public:
        MobileOpenGLGraphics();

        A_DELETE_COPY(MobileOpenGLGraphics)

        ~MobileOpenGLGraphics();

        #include "render/openglgraphicsdef.hpp"

        inline void drawTriangleArrayfs(const GLshort *const shortVertArray,
                                        const GLfloat *const floatTexArray,
                                        const int size);

        inline void drawTriangleArrayfs(const int size);

        inline void drawTriangleArrayfsCached(const int size);

        inline void drawLineArrays(const int size);

        inline void drawVertexes(const NormalOpenGLGraphicsVertexes &ogl);

        bool drawNet(const int x1, const int y1, const int x2, const int y2,
                     const int width, const int height) override final;

        void initArrays() override final;

        /**
         * Draws a rectangle using images. 4 corner images, 4 side images and 1
         * image for the inside.
         */
        void drawImageRect(int x, int y, int w, int h,
                           const ImageRect &imgRect);

#ifdef DEBUG_DRAW_CALLS
        unsigned int getDrawCalls() const
        { return mLastDrawCalls; }

        static unsigned int mDrawCalls;

        static unsigned int mLastDrawCalls;
#endif

    protected:
        void setTexturingAndBlending(const bool enable);

        void debugBindTexture(const Image *const image);

    private:
        void inline setColorAlpha(const float alpha);

        void inline restoreColor();

        void inline calcImageRect(ImageVertexes *const vert,
                                  int x, int y,
                                  int w, int h,
                                  const ImageRect &imgRect);

        void inline calcPatternInline(ImageVertexes *const vert,
                                      const Image *const image,
                                      const int x, const int y,
                                      const int w, const int h) const;

        void inline calcTileVertexesInline(ImageVertexes *const vert,
                                           const Image *const image,
                                           int x, int y) const;

        GLfloat *mFloatTexArray;
        GLshort *mShortVertArray;
        GLfloat *mFloatTexArrayCached;
        GLshort *mShortVertArrayCached;
        float mAlphaCached;
        int mVpCached;
        bool mTexture;

        bool mIsByteColor;
        gcn::Color mByteColor;
        GLuint mImageCached;
        float mFloatColor;
        int mMaxVertices;
        bool mColorAlpha;
#ifdef DEBUG_BIND_TEXTURE
        std::string mOldTexture;
        unsigned mOldTextureId;
#endif
        FBOInfo mFbo;
};
#endif

#endif  // RENDER_MOBILEOPENGLGRAPHICS_H