Copy modernopengl into mobileopengl2 backend.

In future it will be reworked into OpenGL ES 2.

4 files changed, 1536 insertions, 12 deletions

diff --git a/src/render/mobileopengl2graphics.cpp b/src/render/mobileopengl2graphics.cpp
new file mode 100644
index 000000000..b049d2ede
--- /dev/null
+++ b/src/render/mobileopengl2graphics.cpp
@@ -0,0 +1,1372 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2015  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/>.
+ */
+
+#if defined USE_OPENGL && !defined ANDROID
+
+#include "render/mobileopengl2graphics.h"
+
+#include "configuration.h"
+#include "graphicsmanager.h"
+#include "graphicsvertexes.h"
+#include "logger.h"
+
+#include "render/mgl.h"
+
+#include "render/shaders/shaderprogram.h"
+#include "render/shaders/shadersmanager.h"
+
+#include "resources/image.h"
+#include "resources/imagerect.h"
+#include "resources/openglimagehelper.h"
+
+#include "utils/delete2.h"
+#include "utils/sdlcheckutils.h"
+#include "utils/sdlhelper.h"
+
+#include "debug.h"
+
+#define vertFill2D(var, x1, y1, x2, y2, dstX, dstY, w, h) \
+    var[vp + 0] = dstX; \
+    var[vp + 1] = dstY; \
+    var[vp + 2] = x1; \
+    var[vp + 3] = y1; \
+    \
+    var[vp + 4] = dstX + w; \
+    var[vp + 5] = dstY; \
+    var[vp + 6] = x2; \
+    var[vp + 7] = y1; \
+    \
+    var[vp + 8] = dstX + w; \
+    var[vp + 9] = dstY + h; \
+    var[vp + 10] = x2; \
+    var[vp + 11] = y2; \
+    \
+    var[vp + 12] = dstX; \
+    var[vp + 13] = dstY; \
+    var[vp + 14] = x1; \
+    var[vp + 15] = y1; \
+    \
+    var[vp + 16] = dstX; \
+    var[vp + 17] = dstY + h; \
+    var[vp + 18] = x1; \
+    var[vp + 19] = y2; \
+    \
+    var[vp + 20] = dstX + w; \
+    var[vp + 21] = dstY + h; \
+    var[vp + 22] = x2; \
+    var[vp + 23] = y2;
+
+GLuint MobileOpenGL2Graphics::mTextureBinded = 0;
+#ifdef DEBUG_DRAW_CALLS
+unsigned int MobileOpenGL2Graphics::mDrawCalls = 0;
+unsigned int MobileOpenGL2Graphics::mLastDrawCalls = 0;
+#endif
+
+MobileOpenGL2Graphics::MobileOpenGL2Graphics() :
+    mIntArray(nullptr),
+    mIntArrayCached(nullptr),
+    mProgram(nullptr),
+    mAlphaCached(1.0F),
+    mVpCached(0),
+    mFloatColor(1.0F),
+    mMaxVertices(500),
+    mProgramId(0U),
+    mSimpleColorUniform(0U),
+    mPosAttrib(0),
+    mTextureColorUniform(0U),
+    mScreenUniform(0U),
+    mDrawTypeUniform(0U),
+    mVao(0U),
+    mVbo(0U),
+    mEbo(0U),
+    mVboBinded(0U),
+    mEboBinded(0U),
+    mAttributesBinded(0U),
+    mColorAlpha(false),
+    mTextureDraw(false),
+#ifdef DEBUG_BIND_TEXTURE
+    mOldTexture(),
+    mOldTextureId(0),
+#endif
+    mFbo()
+{
+    mOpenGL = RENDER_GLES2_OPENGL;
+    mName = "mobile OpenGL ES 2";
+}
+
+MobileOpenGL2Graphics::~MobileOpenGL2Graphics()
+{
+    deleteArraysInternal();
+    deleteGLObjects();
+}
+
+void MobileOpenGL2Graphics::deleteGLObjects()
+{
+    delete2(mProgram);
+    if (mVbo)
+    {
+//        logger->log("delete buffer vbo: %u", mVbo);
+        mglDeleteBuffers(1, &mVbo);
+    }
+    if (mEbo)
+    {
+//        logger->log("delete buffer ebo: %u", mEbo);
+        mglDeleteBuffers(1, &mEbo);
+    }
+    if (mVao)
+        mglDeleteVertexArrays(1, &mVao);
+}
+
+void MobileOpenGL2Graphics::initArrays(const int vertCount)
+{
+    mMaxVertices = vertCount;
+    if (mMaxVertices < 500)
+        mMaxVertices = 500;
+    else if (mMaxVertices > 1024)
+        mMaxVertices = 1024;
+
+    // need alocate small size, after if limit reached reallocate to double size
+    const size_t sz = mMaxVertices * 4 + 30;
+    vertexBufSize = mMaxVertices;
+    if (!mIntArray)
+        mIntArray = new GLint[sz];
+    if (!mIntArrayCached)
+        mIntArrayCached = new GLint[sz];
+}
+
+void MobileOpenGL2Graphics::postInit()
+{
+    mglGenVertexArrays(1, &mVao);
+    mglBindVertexArray(mVao);
+    mglGenBuffers(1, &mVbo);
+//    logger->log("gen vbo buffer: %u", mVbo);
+    bindArrayBuffer(mVbo);
+    mglGenBuffers(1, &mEbo);
+//    logger->log("gen ebo buffer: %u", mEbo);
+    bindElementBuffer(mEbo);
+
+    logger->log("Compiling shaders");
+    mProgram = shaders.getSimpleProgram();
+    if (!mProgram)
+    {
+        graphicsManager.logError();
+        logger->safeError("Shader creation error. See manaplus.log.");
+    }
+    mProgramId = mProgram->getProgramId();
+    if (!mProgram)
+        logger->error("Shaders compilation error.");
+
+    logger->log("Shaders compilation done.");
+    mglUseProgram(mProgramId);
+
+    mPosAttrib = mglGetAttribLocation(mProgramId, "position");
+    mglEnableVertexAttribArray(mPosAttrib);
+    mglVertexAttribIFormat(mPosAttrib, 4, GL_INT, 0);
+
+    mSimpleColorUniform = mglGetUniformLocation(mProgramId, "color");
+    mScreenUniform = mglGetUniformLocation(mProgramId, "screen");
+    mDrawTypeUniform = mglGetUniformLocation(mProgramId, "drawType");
+    mTextureColorUniform = mglGetUniformLocation(mProgramId, "alpha");
+
+    mglUniform1f(mTextureColorUniform, 1.0f);
+
+    mglBindVertexBuffer(0, mVbo, 0, 4 * sizeof(GLint));
+    mglVertexAttribBinding(mPosAttrib, 0);
+//    mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
+    mAttributesBinded = mVbo;
+
+    mglUniform2f(mScreenUniform,
+        static_cast<float>(mWidth) / 2.0f,
+        static_cast<float>(mHeight) / 2.0f);
+}
+
+void MobileOpenGL2Graphics::screenResized()
+{
+    deleteGLObjects();
+    mVboBinded = 0U;
+    mEboBinded = 0U;
+    mAttributesBinded = 0U;
+    postInit();
+}
+
+void MobileOpenGL2Graphics::deleteArrays()
+{
+    deleteArraysInternal();
+}
+
+void MobileOpenGL2Graphics::deleteArraysInternal()
+{
+    delete [] mIntArray;
+    mIntArray = nullptr;
+    delete [] mIntArrayCached;
+    mIntArrayCached = nullptr;
+}
+
+bool MobileOpenGL2Graphics::setVideoMode(const int w, const int h,
+                                        const int scale,
+                                        const int bpp,
+                                        const bool fs,
+                                        const bool hwaccel,
+                                        const bool resize,
+                                        const bool noFrame)
+{
+    setMainFlags(w, h, scale, bpp, fs, hwaccel, resize, noFrame);
+
+    return setOpenGLMode();
+}
+
+void MobileOpenGL2Graphics::setColor(const Color &color)
+{
+    mColorAlpha = (color.a != 255);
+    if (mColor != color)
+    {
+        mColor = color;
+        mglUniform4f(mSimpleColorUniform,
+            static_cast<float>(color.r) / 255.0F,
+            static_cast<float>(color.g) / 255.0F,
+            static_cast<float>(color.b) / 255.0F,
+            static_cast<float>(color.a) / 255.0F);
+    }
+}
+
+void MobileOpenGL2Graphics::setColorAlpha(const float alpha)
+{
+    if (mAlphaCached != alpha)
+    {
+        mAlphaCached = alpha;
+        mglUniform1f(mTextureColorUniform, alpha);
+    }
+}
+
+void MobileOpenGL2Graphics::drawQuad(const int srcX, const int srcY,
+                                     const int dstX, const int dstY,
+                                     const int width, const int height)
+{
+    const int texX2 = srcX + width;
+    const int texY2 = srcY + height;
+    const int x2 = dstX + width;
+    const int y2 = dstY + height;
+
+    GLint vertices[] =
+    {
+        dstX, dstY, srcX, srcY,
+        x2, dstY, texX2, srcY,
+        dstX, y2, srcX, texY2,
+        x2, y2, texX2, texY2
+    };
+
+//    logger->log("allocate: %d, %ld", mVboBinded, sizeof(vertices));
+    mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+        vertices, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+}
+
+void MobileOpenGL2Graphics::drawRescaledQuad(const int srcX, const int srcY,
+                                             const int dstX, const int dstY,
+                                             const int width, const int height,
+                                             const int desiredWidth,
+                                             const int desiredHeight)
+{
+    const int texX2 = srcX + width;
+    const int texY2 = srcY + height;
+    const int x2 = dstX + desiredWidth;
+    const int y2 = dstY + desiredHeight;
+
+    GLint vertices[] =
+    {
+        dstX, dstY, srcX, srcY,
+        x2, dstY, texX2, srcY,
+        dstX, y2, srcX, texY2,
+        x2, y2, texX2, texY2
+    };
+
+//    logger->log("allocate: %d, %ld", mVboBinded, sizeof(vertices));
+    mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+        vertices, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+}
+
+void MobileOpenGL2Graphics::drawImage(const Image *const image,
+                                      int dstX, int dstY)
+{
+    drawImageInline(image, dstX, dstY);
+}
+
+void MobileOpenGL2Graphics::drawImageInline(const Image *const image,
+                                            int dstX, int dstY)
+{
+    FUNC_BLOCK("Graphics::drawImage", 1)
+    if (!image)
+        return;
+
+#ifdef DEBUG_BIND_TEXTURE
+    debugBindTexture(image);
+#endif
+    bindTexture(GL_TEXTURE_2D, image->mGLImage);
+    setTexturingAndBlending(true);
+    bindArrayBufferAndAttributes(mVbo);
+    setColorAlpha(image->mAlpha);
+
+    const ClipRect &clipArea = mClipStack.top();
+    const SDL_Rect &imageRect = image->mBounds;
+    drawQuad(imageRect.x, imageRect.y,
+        dstX + clipArea.xOffset, dstY + clipArea.yOffset,
+        imageRect.w, imageRect.h);
+}
+
+void MobileOpenGL2Graphics::copyImage(const Image *const image,
+                                      int dstX, int dstY)
+{
+    drawImageInline(image, dstX, dstY);
+}
+
+void MobileOpenGL2Graphics::testDraw()
+{
+/*
+    GLint vertices[] =
+    {
+        0, 0, 0, 0,
+        800, 0, 800, 0,
+        0, 600, 0, 600,
+        800, 600, 800, 600
+    };
+*/
+//    logger->log("allocate: %d, %ld", mVboBinded, sizeof(vertices));
+//    logger->log("allocate ebo: %d, %ld", mEboBinded, sizeof(elements));
+//    mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+//        vertices, GL_STREAM_DRAW);
+//    mglBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(elements),
+//        elements, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+//    glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_INT, 0);
+}
+
+void MobileOpenGL2Graphics::drawImageCached(const Image *const image A_UNUSED,
+                                            int A_UNUSED x, int y A_UNUSED)
+{
+}
+
+void MobileOpenGL2Graphics::drawPatternCached(const Image *const image A_UNUSED,
+                                              const int x A_UNUSED,
+                                              const int y A_UNUSED,
+                                              const int w A_UNUSED,
+                                              const int h A_UNUSED)
+{
+}
+
+void MobileOpenGL2Graphics::completeCache()
+{
+}
+
+void MobileOpenGL2Graphics::drawRescaledImage(const Image *const image,
+                                              int dstX, int dstY,
+                                              const int desiredWidth,
+                                              const int desiredHeight)
+{
+    if (!image)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+
+    // Just draw the image normally when no resizing is necessary,
+    if (imageRect.w == desiredWidth && imageRect.h == desiredHeight)
+    {
+        drawImageInline(image, dstX, dstY);
+        return;
+    }
+
+    setColorAlpha(image->mAlpha);
+#ifdef DEBUG_BIND_TEXTURE
+    debugBindTexture(image);
+#endif
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+    setTexturingAndBlending(true);
+    bindArrayBufferAndAttributes(mVbo);
+
+    const ClipRect &clipArea = mClipStack.top();
+    // Draw a textured quad.
+    drawRescaledQuad(imageRect.x, imageRect.y,
+        dstX + clipArea.xOffset, dstY + clipArea.yOffset,
+        imageRect.w, imageRect.h,
+        desiredWidth, desiredHeight);
+}
+
+void MobileOpenGL2Graphics::drawPattern(const Image *const image,
+                                        const int x, const int y,
+                                        const int w, const int h)
+{ 
+    drawPatternInline(image, x, y, w, h);
+}
+
+void MobileOpenGL2Graphics::drawPatternInline(const Image *const image,
+                                              const int x, const int y,
+                                              const int w, const int h)
+{
+    if (!image)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+    const int srcX = imageRect.x;
+    const int srcY = imageRect.y;
+    const int iw = imageRect.w;
+    const int ih = imageRect.h;
+
+    if (iw == 0 || ih == 0)
+        return;
+
+    const ClipRect &clipArea = mClipStack.top();
+    const int x2 = x + clipArea.xOffset;
+    const int y2 = y + clipArea.yOffset;
+
+#ifdef DEBUG_BIND_TEXTURE
+    debugBindTexture(image);
+#endif
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+
+    setTexturingAndBlending(true);
+    bindArrayBufferAndAttributes(mVbo);
+    setColorAlpha(image->mAlpha);
+
+    unsigned int vp = 0;
+    const unsigned int vLimit = mMaxVertices * 4;
+
+    for (int py = 0; py < h; py += ih)
+    {
+        const int height = (py + ih >= h) ? h - py : ih;
+        const int texY2 = srcY + height;
+        const int dstY = y2 + py;
+        for (int px = 0; px < w; px += iw)
+        {
+            const int width = (px + iw >= w) ? w - px : iw;
+            const int dstX = x2 + px;
+
+            const int texX2 = srcX + width;
+
+            vertFill2D(mIntArray,
+                srcX, srcY, texX2, texY2,
+                dstX, dstY, width, height);
+
+            vp += 24;
+            if (vp >= vLimit)
+            {
+                drawTriangleArray(vp);
+                vp = 0;
+            }
+        }
+    }
+    if (vp > 0)
+        drawTriangleArray(vp);
+}
+
+void MobileOpenGL2Graphics::drawRescaledPattern(const Image *const image,
+                                                const int x, const int y,
+                                                const int w, const int h,
+                                                const int scaledWidth,
+                                                const int scaledHeight)
+{
+    if (!image)
+        return;
+
+    if (scaledWidth == 0 || scaledHeight == 0)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+    const int srcX = imageRect.x;
+    const int srcY = imageRect.y;
+    const int iw = imageRect.w;
+    const int ih = imageRect.h;
+    if (iw == 0 || ih == 0)
+        return;
+
+#ifdef DEBUG_BIND_TEXTURE
+    debugBindTexture(image);
+#endif
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+
+    setTexturingAndBlending(true);
+    bindArrayBufferAndAttributes(mVbo);
+    setColorAlpha(image->mAlpha);
+
+    unsigned int vp = 0;
+    const unsigned int vLimit = mMaxVertices * 4;
+
+    const ClipRect &clipArea = mClipStack.top();
+    const int x2 = x + clipArea.xOffset;
+    const int y2 = y + clipArea.yOffset;
+
+    const float scaleFactorW = static_cast<float>(scaledWidth) / iw;
+    const float scaleFactorH = static_cast<float>(scaledHeight) / ih;
+
+    for (int py = 0; py < h; py += scaledHeight)
+    {
+        const int height = (py + scaledHeight >= h)
+            ? h - py : scaledHeight;
+        const int dstY = y2 + py;
+        const int scaledY = srcY + height / scaleFactorH;
+        for (int px = 0; px < w; px += scaledWidth)
+        {
+            const int width = (px + scaledWidth >= w)
+                ? w - px : scaledWidth;
+            const int dstX = x2 + px;
+            const int scaledX = srcX + width / scaleFactorW;
+
+            vertFill2D(mIntArray,
+                srcX, srcY, scaledX, scaledY,
+                dstX, dstY, width, height);
+
+            vp += 24;
+            if (vp >= vLimit)
+            {
+                drawTriangleArray(vp);
+                vp = 0;
+            }
+        }
+    }
+    if (vp > 0)
+        drawTriangleArray(vp);
+}
+
+inline void MobileOpenGL2Graphics::drawVertexes(const
+                                                OpenGLGraphicsVertexes &ogl)
+{
+    const std::vector<int> &vp = ogl.mVp;
+    const std::vector<GLuint> &vbos = ogl.mVbo;
+    std::vector<int>::const_iterator ivp;
+    std::vector<GLuint>::const_iterator ivbo;
+    const std::vector<int>::const_iterator ivp_end = vp.end();
+
+/*
+    if (vp.size() != vbos.size())
+        logger->log("different size in vp and vbos");
+*/
+
+    for (ivp = vp.begin(), ivbo = vbos.begin();
+         ivp != ivp_end;
+         ++ ivp, ++ ivbo)
+    {
+        bindArrayBufferAndAttributes(*ivbo);
+#ifdef DEBUG_DRAW_CALLS
+        mDrawCalls ++;
+#endif
+//        logger->log("draw from array: %u", *ivbo);
+        glDrawArrays(GL_TRIANGLES, 0, *ivp / 4);
+    }
+}
+
+void MobileOpenGL2Graphics::calcPattern(ImageVertexes *const vert,
+                                        const Image *const image,
+                                        const int x, const int y,
+                                        const int w, const int h) const
+{
+    calcPatternInline(vert, image, x, y, w, h);
+}
+
+void MobileOpenGL2Graphics::calcPatternInline(ImageVertexes *const vert,
+                                              const Image *const image,
+                                              const int x, const int y,
+                                              const int w, const int h) const
+{
+    if (!image || !vert)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+    const int srcX = imageRect.x;
+    const int srcY = imageRect.y;
+    const int iw = imageRect.w;
+    const int ih = imageRect.h;
+
+    if (iw == 0 || ih == 0)
+        return;
+
+    const ClipRect &clipArea = mClipStack.top();
+    const int x2 = x + clipArea.xOffset;
+    const int y2 = y + clipArea.yOffset;
+
+    const unsigned int vLimit = mMaxVertices * 4;
+
+    OpenGLGraphicsVertexes &ogl = vert->ogl;
+    unsigned int vp = ogl.continueVp();
+
+    GLint *intArray = ogl.continueIntTexArray();
+
+    for (int py = 0; py < h; py += ih)
+    {
+        const int height = (py + ih >= h) ? h - py : ih;
+        const int dstY = y2 + py;
+        const int texY2 = srcY + height;
+        for (int px = 0; px < w; px += iw)
+        {
+            const int width = (px + iw >= w) ? w - px : iw;
+            const int dstX = x2 + px;
+            const int texX2 = srcX + width;
+
+            vertFill2D(intArray,
+                srcX, srcY, texX2, texY2,
+                dstX, dstY, width, height);
+
+            vp += 24;
+            if (vp >= vLimit)
+            {
+                intArray = ogl.switchIntTexArray();
+                ogl.switchVp(vp);
+                vp = 0;
+            }
+        }
+    }
+    ogl.switchVp(vp);
+}
+
+void MobileOpenGL2Graphics::calcTileCollection(ImageCollection *const vertCol,
+                                               const Image *const image,
+                                               int x, int y)
+{
+    if (!vertCol || !image)
+        return;
+    if (vertCol->currentGLImage != image->mGLImage)
+    {
+        ImageVertexes *const vert = new ImageVertexes();
+        vertCol->currentGLImage = image->mGLImage;
+        vertCol->currentVert = vert;
+        vert->image = image;
+        vertCol->draws.push_back(vert);
+        calcTileVertexesInline(vert, image, x, y);
+    }
+    else
+    {
+        calcTileVertexesInline(vertCol->currentVert, image, x, y);
+    }
+}
+
+void MobileOpenGL2Graphics::drawTileCollection(const ImageCollection
+                                               *const vertCol)
+{
+    if (!vertCol)
+        return;
+    setTexturingAndBlending(true);
+/*
+    if (!vertCol)
+    {
+        logger->log("MobileOpenGL2Graphics::drawTileCollection"
+            " vertCol is nullptr");
+    }
+*/
+    const ImageVertexesVector &draws = vertCol->draws;
+    const ImageCollectionCIter it_end = draws.end();
+    for (ImageCollectionCIter it = draws.begin(); it != it_end; ++ it)
+    {
+        const ImageVertexes *const vert = *it;
+        const Image *const image = vert->image;
+
+        setColorAlpha(image->mAlpha);
+#ifdef DEBUG_BIND_TEXTURE
+        debugBindTexture(image);
+#endif
+        bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+        drawVertexes(vert->ogl);
+    }
+}
+
+void MobileOpenGL2Graphics::calcPattern(ImageCollection* const vertCol,
+                                        const Image *const image,
+                                        const int x, const int y,
+                                        const int w, const int h) const
+{
+    if (!vertCol || !image)
+        return;
+    ImageVertexes *vert = nullptr;
+    if (vertCol->currentGLImage != image->mGLImage)
+    {
+        vert = new ImageVertexes();
+        vertCol->currentGLImage = image->mGLImage;
+        vertCol->currentVert = vert;
+        vert->image = image;
+        vertCol->draws.push_back(vert);
+    }
+    else
+    {
+        vert = vertCol->currentVert;
+    }
+
+    calcPatternInline(vert, image, x, y, w, h);
+}
+
+void MobileOpenGL2Graphics::calcTileVertexes(ImageVertexes *const vert,
+                                             const Image *const image,
+                                             int dstX, int dstY) const
+{
+    calcTileVertexesInline(vert, image, dstX, dstY);
+}
+
+void MobileOpenGL2Graphics::calcTileVertexesInline(ImageVertexes *const vert,
+                                                   const Image *const image,
+                                                   int dstX, int dstY) const
+{
+    if (!vert || !image)
+        return;
+
+    const SDL_Rect &imageRect = image->mBounds;
+    const int srcX = imageRect.x;
+    const int srcY = imageRect.y;
+    const int w = imageRect.w;
+    const int h = imageRect.h;
+
+    if (w == 0 || h == 0)
+        return;
+
+    const ClipRect &clipArea = mClipStack.top();
+    const int x2 = dstX + clipArea.xOffset;
+    const int y2 = dstY + clipArea.yOffset;
+
+    const unsigned int vLimit = mMaxVertices * 4;
+
+    OpenGLGraphicsVertexes &ogl = vert->ogl;
+
+    unsigned int vp = ogl.continueVp();
+
+    int texX2 = srcX + w;
+    int texY2 = srcY + h;
+
+    GLint *const intArray = ogl.continueIntTexArray();
+
+    vertFill2D(intArray,
+        srcX, srcY, texX2, texY2,
+        x2, y2, w, h);
+
+    vp += 24;
+    if (vp >= vLimit)
+    {
+        ogl.switchIntTexArray();
+        ogl.switchVp(vp);
+        vp = 0;
+    }
+
+    ogl.switchVp(vp);
+}
+
+void MobileOpenGL2Graphics::drawTileVertexes(const ImageVertexes *const vert)
+{
+    if (!vert)
+        return;
+    const Image *const image = vert->image;
+
+    setColorAlpha(image->mAlpha);
+#ifdef DEBUG_BIND_TEXTURE
+    debugBindTexture(image);
+#endif
+    bindTexture(OpenGLImageHelper::mTextureType, image->mGLImage);
+    setTexturingAndBlending(true);
+    bindArrayBufferAndAttributes(mVbo);
+
+    drawVertexes(vert->ogl);
+}
+
+void MobileOpenGL2Graphics::calcWindow(ImageCollection *const vertCol,
+                                       const int x, const int y,
+                                       const int w, const int h,
+                                       const ImageRect &imgRect)
+{
+    if (!vertCol)
+        return;
+    ImageVertexes *vert = nullptr;
+    const Image *const image = imgRect.grid[4];
+    if (!image)
+        return;
+    if (vertCol->currentGLImage != image->mGLImage)
+    {
+        vert = new ImageVertexes();
+        vertCol->currentGLImage = image->mGLImage;
+        vertCol->currentVert = vert;
+        vert->image = image;
+        vertCol->draws.push_back(vert);
+    }
+    else
+    {
+        vert = vertCol->currentVert;
+    }
+    calcImageRect(vert, x, y, w, h, imgRect);
+}
+
+void MobileOpenGL2Graphics::updateScreen()
+{
+    BLOCK_START("Graphics::updateScreen")
+#ifdef DEBUG_DRAW_CALLS
+    mLastDrawCalls = mDrawCalls;
+    mDrawCalls = 0;
+#endif
+#ifdef USE_SDL2
+    SDL_GL_SwapWindow(mWindow);
+#else
+    SDL_GL_SwapBuffers();
+#endif
+#ifdef DEBUG_OPENGL
+    if (isGLNotNull(mglFrameTerminator))
+        mglFrameTerminator();
+#endif
+// may be need clear?
+//  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+    BLOCK_END("Graphics::updateScreen")
+}
+
+void MobileOpenGL2Graphics::beginDraw()
+{
+    setOpenGLFlags();
+    glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
+    glHint(GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB, GL_FASTEST);
+    pushClipArea(Rect(0, 0, mRect.w, mRect.h));
+}
+
+void MobileOpenGL2Graphics::endDraw()
+{
+    popClipArea();
+}
+
+void MobileOpenGL2Graphics::prepareScreenshot()
+{
+    if (config.getBoolValue("usefbo"))
+        graphicsManager.createFBO(mRect.w, mRect.h, &mFbo);
+}
+
+SDL_Surface* MobileOpenGL2Graphics::getScreenshot()
+{
+    const int h = mRect.h;
+    const int w = mRect.w - (mRect.w % 4);
+    GLint pack = 1;
+
+    SDL_Surface *const screenshot = MSDL_CreateRGBSurface(
+        SDL_SWSURFACE, w, h, 24,
+        0xff0000, 0x00ff00, 0x0000ff, 0x000000);
+
+    if (!screenshot)
+        return nullptr;
+
+    if (SDL_MUSTLOCK(screenshot))
+        SDL_LockSurface(screenshot);
+
+    const size_t lineSize = 3 * w;
+    GLubyte *const buf = new GLubyte[lineSize];
+
+    // Grap the pixel buffer and write it to the SDL surface
+    glGetIntegerv(GL_PACK_ALIGNMENT, &pack);
+    glPixelStorei(GL_PACK_ALIGNMENT, 1);
+    glReadPixels(0, 0, w, h, GL_RGB, GL_UNSIGNED_BYTE, screenshot->pixels);
+
+    // Flip the screenshot, as OpenGL has 0,0 in bottom left
+    const int h2 = h / 2;
+    for (int i = 0; i < h2; i++)
+    {
+        GLubyte *const top = static_cast<GLubyte*>(
+            screenshot->pixels) + lineSize * i;
+        GLubyte *const bot = static_cast<GLubyte*>(
+            screenshot->pixels) + lineSize * (h - 1 - i);
+
+        memcpy(buf, top, lineSize);
+        memcpy(top, bot, lineSize);
+        memcpy(bot, buf, lineSize);
+    }
+
+    delete [] buf;
+
+    if (config.getBoolValue("usefbo"))
+        graphicsManager.deleteFBO(&mFbo);
+
+    glPixelStorei(GL_PACK_ALIGNMENT, pack);
+
+    if (SDL_MUSTLOCK(screenshot))
+        SDL_UnlockSurface(screenshot);
+
+    return screenshot;
+}
+
+void MobileOpenGL2Graphics::pushClipArea(const Rect &area)
+{
+    Graphics::pushClipArea(area);
+    const ClipRect &clipArea = mClipStack.top();
+
+    glScissor(clipArea.x * mScale,
+        (mRect.h - clipArea.y - clipArea.height) * mScale,
+        clipArea.width * mScale,
+        clipArea.height * mScale);
+}
+
+void MobileOpenGL2Graphics::popClipArea()
+{
+    if (mClipStack.empty())
+        return;
+    Graphics::popClipArea();
+    if (mClipStack.empty())
+        return;
+
+    const ClipRect &clipArea = mClipStack.top();
+    glScissor(clipArea.x * mScale,
+        (mRect.h - clipArea.y - clipArea.height) * mScale,
+        clipArea.width * mScale,
+        clipArea.height * mScale);
+}
+
+void MobileOpenGL2Graphics::drawPoint(int x, int y)
+{
+    setTexturingAndBlending(false);
+    bindArrayBufferAndAttributes(mVbo);
+    const ClipRect &clipArea = mClipStack.top();
+    GLint vertices[] =
+    {
+        x + clipArea.xOffset, y + clipArea.yOffset, 0, 0
+    };
+//    logger->log("allocate: %d, %ld", mVboBinded, sizeof(vertices));
+    mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+        vertices, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_POINTS, 0, 1);
+}
+
+void MobileOpenGL2Graphics::drawLine(int x1, int y1, int x2, int y2)
+{
+    setTexturingAndBlending(false);
+    bindArrayBufferAndAttributes(mVbo);
+    const ClipRect &clipArea = mClipStack.top();
+    GLint vertices[] =
+    {
+        x1 + clipArea.xOffset, y1 + clipArea.yOffset, 0, 0,
+        x2 + clipArea.xOffset, y2 + clipArea.yOffset, 0, 0
+    };
+//    logger->log("allocate: %d, %ld", mVboBinded, sizeof(vertices));
+    mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+        vertices, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_LINES, 0, 2);
+}
+
+void MobileOpenGL2Graphics::drawRectangle(const Rect& rect)
+{
+    setTexturingAndBlending(false);
+    bindArrayBufferAndAttributes(mVbo);
+    const ClipRect &clipArea = mClipStack.top();
+    const int x1 = rect.x + clipArea.xOffset;
+    const int y1 = rect.y + clipArea.yOffset;
+    const int x2 = x1 + rect.width;
+    const int y2 = y1 + rect.height;
+    GLint vertices[] =
+    {
+        x1, y1, 0, 0,
+        x1, y2, 0, 0,
+        x2, y2, 0, 0,
+        x2, y1, 0, 0
+    };
+
+//    logger->log("allocate: %d, %ld", mVboBinded, sizeof(vertices));
+    mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+        vertices, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_LINE_LOOP, 0, 4);
+}
+
+void MobileOpenGL2Graphics::fillRectangle(const Rect& rect)
+{
+    setTexturingAndBlending(false);
+    bindArrayBufferAndAttributes(mVbo);
+    const ClipRect &clipArea = mClipStack.top();
+    const int x1 = rect.x + clipArea.xOffset;
+    const int y1 = rect.y + clipArea.yOffset;
+    const int x2 = x1 + rect.width;
+    const int y2 = y1 + rect.height;
+    GLint vertices[] =
+    {
+        x1, y1, 0, 0,
+        x2, y1, 0, 0,
+        x1, y2, 0, 0,
+        x2, y2, 0, 0
+    };
+
+//    logger->log("allocate: %d, %ld", mVboBinded, sizeof(vertices));
+    mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+        vertices, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+}
+
+void MobileOpenGL2Graphics::setTexturingAndBlending(const bool enable)
+{
+    if (enable)
+    {
+        if (!mTextureDraw)
+        {
+            mTextureDraw = true;
+            mglUniform1f(mDrawTypeUniform, 1.0f);
+        }
+        if (!mAlpha)
+        {
+            glEnable(GL_BLEND);
+            mAlpha = true;
+        }
+    }
+    else
+    {
+        if (mTextureDraw)
+        {
+            mTextureDraw = false;
+            mglUniform1f(mDrawTypeUniform, 0.0f);
+        }
+        if (mAlpha && !mColorAlpha)
+        {
+            glDisable(GL_BLEND);
+            mAlpha = false;
+        }
+        else if (!mAlpha && mColorAlpha)
+        {
+            glEnable(GL_BLEND);
+            mAlpha = true;
+        }
+    }
+}
+
+void MobileOpenGL2Graphics::drawRectangle(const Rect& rect A_UNUSED,
+                                          const bool filled A_UNUSED)
+{
+}
+
+void MobileOpenGL2Graphics::drawNet(const int x1, const int y1,
+                                    const int x2, const int y2,
+                                    const int width, const int height)
+{
+    unsigned int vp = 0;
+    const unsigned int vLimit = mMaxVertices * 4;
+
+    setTexturingAndBlending(false);
+    bindArrayBufferAndAttributes(mVbo);
+    const ClipRect &clipArea = mClipStack.top();
+    const GLint dx = clipArea.xOffset;
+    const GLint dy = clipArea.yOffset;
+
+    const GLint xs1 = x1 + dx;
+    const GLint xs2 = x2 + dx;
+    const GLint ys1 = y1 + dy;
+    const GLint ys2 = y2 + dy;
+
+    for (int y = y1; y < y2; y += height)
+    {
+        mIntArray[vp + 0] = xs1;
+        mIntArray[vp + 1] = y;
+        mIntArray[vp + 2] = 0;
+        mIntArray[vp + 3] = 0;
+
+        mIntArray[vp + 4] = xs2;
+        mIntArray[vp + 5] = y;
+        mIntArray[vp + 6] = 0;
+        mIntArray[vp + 7] = 0;
+
+        vp += 8;
+        if (vp >= vLimit)
+        {
+            drawLineArrays(vp);
+            vp = 0;
+        }
+    }
+
+    for (int x = x1; x < x2; x += width)
+    {
+        mIntArray[vp + 0] = x;
+        mIntArray[vp + 1] = ys1;
+        mIntArray[vp + 2] = 0.0f;
+        mIntArray[vp + 3] = 0.0f;
+
+        mIntArray[vp + 4] = x;
+        mIntArray[vp + 5] = ys2;
+        mIntArray[vp + 6] = 0.0f;
+        mIntArray[vp + 7] = 0.0f;
+
+        vp += 8;
+        if (vp >= vLimit)
+        {
+            drawLineArrays(vp);
+            vp = 0;
+        }
+    }
+
+    if (vp > 0)
+        drawLineArrays(vp);
+}
+
+void MobileOpenGL2Graphics::bindTexture(const GLenum target,
+                                        const GLuint texture)
+{
+    if (mTextureBinded != texture)
+    {
+        mTextureBinded = texture;
+        glBindTexture(target, texture);
+    }
+}
+
+void MobileOpenGL2Graphics::removeArray(const uint32_t sz,
+                                        uint32_t *const arr)
+{
+    mglDeleteBuffers(sz, arr);
+    for (size_t f = 0; f < sz; f ++)
+    {
+        if (arr[f] == mVboBinded)
+            mVboBinded = 0;
+//        logger->log("delete buffers: %u", arr[f]);
+    }
+}
+
+void MobileOpenGL2Graphics::bindArrayBuffer(const GLuint vbo)
+{
+    if (mVboBinded != vbo)
+    {
+        mVboBinded = vbo;
+//        logger->log("bind array: %u", vbo);
+        mglBindBuffer(GL_ARRAY_BUFFER, vbo);
+/*
+        if (mglIsBuffer(vbo) != GL_TRUE)
+            logger->log("bind wrong buffer: %u", vbo);
+*/
+        mAttributesBinded = 0U;
+    }
+}
+
+void MobileOpenGL2Graphics::bindElementBuffer(const GLuint ebo)
+{
+    if (mEboBinded != ebo)
+    {
+        mEboBinded = ebo;
+        logger->log("bind element: %u", ebo);
+        mglBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
+/*
+        if (mglIsBuffer(ebo) != GL_TRUE)
+            logger->log("bind wrong buffer: %u", vbo);
+*/
+    }
+}
+
+void MobileOpenGL2Graphics::bindArrayBufferAndAttributes(const GLuint vbo)
+{
+    if (mVboBinded != vbo)
+    {
+        mVboBinded = vbo;
+//        logger->log("bind array: %u", vbo);
+        mglBindBuffer(GL_ARRAY_BUFFER, vbo);
+/*
+        if (mglIsBuffer(vbo) != GL_TRUE)
+            logger->log("bind wrong buffer: %u", vbo);
+*/
+
+        mAttributesBinded = mVboBinded;
+//        logger->log("bind vertex buffer: %u", mVboBinded);
+        mglBindVertexBuffer(0, mVboBinded, 0, 4 * sizeof(GLint));
+//        mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
+//        mglVertexAttribBinding(mPosAttrib, 0);
+    }
+    else if (mAttributesBinded != mVboBinded)
+    {
+        mAttributesBinded = mVboBinded;
+//        logger->log("bind vertex buffer: %u", mVboBinded);
+        mglBindVertexBuffer(0, mVboBinded, 0, 4 * sizeof(GLint));
+//        mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
+//        mglVertexAttribBinding(mPosAttrib, 0);
+    }
+}
+
+void MobileOpenGL2Graphics::bindAttributes()
+{
+    if (mAttributesBinded != mVboBinded)
+    {
+        mAttributesBinded = mVboBinded;
+        mglBindVertexBuffer(0, mVboBinded, 0, 4 * sizeof(GLint));
+//        mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
+//        mglVertexAttribBinding(mPosAttrib, 0);
+    }
+}
+
+void MobileOpenGL2Graphics::dumpSettings()
+{
+    GLint test[1000];
+    logger->log("\n\n");
+    logger->log("start opengl dump");
+    for (int f = 0; f < 65535; f ++)
+    {
+        test[0] = 0;
+        test[1] = 0;
+        test[2] = 0;
+        test[3] = 0;
+        glGetIntegerv(f, &test[0]);
+        if (test[0] || test[1] || test[2] || test[3])
+        {
+            logger->log("\n%d = %d, %d, %d, %d", f,
+                test[0], test[1], test[2], test[3]);
+        }
+    }
+}
+
+void MobileOpenGL2Graphics::drawImageRect(const int x, const int y,
+                                          const int w, const int h,
+                                          const ImageRect &imgRect)
+{
+    #include "render/graphics_drawImageRect.hpp"
+}
+
+void MobileOpenGL2Graphics::calcImageRect(ImageVertexes *const vert,
+                                          const int x, const int y,
+                                          const int w, const int h,
+                                          const ImageRect &imgRect)
+{
+    #include "render/graphics_calcImageRect.hpp"
+}
+
+void MobileOpenGL2Graphics::clearScreen() const
+{
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+}
+
+void MobileOpenGL2Graphics::createGLContext()
+{
+    if (mGLContext)
+        SDL::makeCurrentContext(mGLContext);
+    else
+        mGLContext = SDL::createGLContext(mWindow, 3, 3, 0x01);
+}
+
+void MobileOpenGL2Graphics::finalize(ImageCollection *const col)
+{
+    if (!col)
+        return;
+    FOR_EACH (ImageCollectionIter, it, col->draws)
+        finalize(*it);
+}
+
+void MobileOpenGL2Graphics::finalize(ImageVertexes *const vert)
+{
+    // in future need convert in each switchVp/continueVp
+
+    if (!vert)
+        return;
+    OpenGLGraphicsVertexes &ogl = vert->ogl;
+    const std::vector<int> &vp = ogl.mVp;
+    std::vector<int>::const_iterator ivp;
+    const std::vector<int>::const_iterator ivp_end = vp.end();
+    std::vector<GLint*> &intTexPool = ogl.mIntTexPool;
+    std::vector<GLint*>::const_iterator ft;
+    const std::vector<GLint*>::const_iterator ft_end = intTexPool.end();
+    std::vector<GLuint> &vbos = ogl.mVbo;
+    std::vector<GLuint>::const_iterator ivbo;
+
+    const int sz = static_cast<int>(intTexPool.size());
+    vbos.resize(sz);
+    mglGenBuffers(sz, &vbos[0]);
+/*
+    for (int f = 0; f < sz; f ++)
+        logger->log("gen buffers: %u", vbos[f]);
+*/
+
+    for (ft = intTexPool.begin(), ivp = vp.begin(), ivbo = vbos.begin();
+         ft != ft_end && ivp != ivp_end;
+         ++ ft, ++ ivp, ++ ivbo)
+    {
+        bindArrayBuffer(*ivbo);
+/*
+        logger->log("allocate: %d, %ld", mVboBinded,
+            (*ivp) * sizeof(GLint));
+*/
+        mglBufferData(GL_ARRAY_BUFFER, (*ivp) * sizeof(GLint),
+            *ft, GL_STATIC_DRAW);
+    }
+
+    for (std::vector<GLint*>::iterator it = intTexPool.begin();
+        it != intTexPool.end(); ++ it)
+    {
+        delete [] (*it);
+    }
+    intTexPool.clear();
+}
+
+void MobileOpenGL2Graphics::drawTriangleArray(const int size)
+{
+//    logger->log("allocate: %d, %ld", mVboBinded, size * sizeof(GLint));
+    mglBufferData(GL_ARRAY_BUFFER, size * sizeof(GLint),
+        mIntArray, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_TRIANGLES, 0, size / 4);
+}
+
+void MobileOpenGL2Graphics::drawTriangleArray(const GLint *const array,
+                                             const int size)
+{
+//    logger->log("allocate: %d, %ld", mVboBinded, size * sizeof(GLint));
+    mglBufferData(GL_ARRAY_BUFFER, size * sizeof(GLint),
+        array, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_TRIANGLES, 0, size / 4);
+}
+
+void MobileOpenGL2Graphics::drawLineArrays(const int size)
+{
+//    logger->log("allocate: %d, %ld", mVboBinded, size * sizeof(GLint));
+    mglBufferData(GL_ARRAY_BUFFER, size * sizeof(GLint),
+        mIntArray, GL_STREAM_DRAW);
+#ifdef DEBUG_DRAW_CALLS
+    mDrawCalls ++;
+#endif
+    glDrawArrays(GL_LINES, 0, size / 4);
+}
+
+#ifdef DEBUG_BIND_TEXTURE
+void MobileOpenGL2Graphics::debugBindTexture(const Image *const image)
+{
+    const std::string texture = image->getIdPath();
+    if (mOldTexture != texture)
+    {
+        if ((!mOldTexture.empty() || !texture.empty())
+            && mOldTextureId != image->mGLImage)
+        {
+            logger->log("bind: %s (%d) to %s (%d)", mOldTexture.c_str(),
+                mOldTextureId, texture.c_str(), image->mGLImage);
+        }
+        mOldTextureId = image->mGLImage;
+        mOldTexture = texture;
+    }
+}
+#else
+void MobileOpenGL2Graphics::debugBindTexture(const Image *const image A_UNUSED)
+{
+}
+#endif
+
+#endif  // USE_OPENGL
diff --git a/src/render/mobileopengl2graphics.h b/src/render/mobileopengl2graphics.h
new file mode 100644
index 000000000..ea31daf6b
--- /dev/null
+++ b/src/render/mobileopengl2graphics.h
@@ -0,0 +1,140 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2015  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_MOBILEOPENGL2GRAPHICS_H
+#define RENDER_MOBILEOPENGL2GRAPHICS_H
+
+#if defined USE_OPENGL && !defined ANDROID
+
+#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>
+#ifndef __native_client__
+#include <GL/glext.h>
+#endif
+#endif
+
+class OpenGLGraphicsVertexes;
+class ShaderProgram;
+
+class MobileOpenGL2Graphics final : public Graphics
+{
+    public:
+        MobileOpenGL2Graphics();
+
+        A_DELETE_COPY(MobileOpenGL2Graphics)
+
+        ~MobileOpenGL2Graphics();
+
+        void postInit() override final;
+
+        void setColor(const Color &color) override final;
+
+        void screenResized() override final;
+
+        void finalize(ImageCollection *const col) override final;
+
+        void finalize(ImageVertexes *const vert) override final;
+
+        void testDraw() override final;
+
+        void removeArray(const uint32_t id,
+                         uint32_t *const arr) override final A_NONNULL(3);
+
+        void createGLContext() override final;
+
+        #include "render/graphicsdef.hpp"
+
+        #include "render/openglgraphicsdef.hpp"
+
+        #include "render/openglgraphicsdefadvanced.hpp"
+
+    private:
+        void deleteGLObjects();
+
+        inline void drawQuad(const int srcX, const int srcY,
+                             const int dstX, const int dstY,
+                             const int width, const int height);
+
+        inline void drawRescaledQuad(const int srcX, const int srcY,
+                                     const int dstX, const int dstY,
+                                     const int width, const int height,
+                                     const int desiredWidth,
+                                     const int desiredHeight);
+
+        inline void drawTriangleArray(const int size);
+
+        inline void drawTriangleArray(const GLint *const array,
+                                      const int size);
+
+        inline void drawLineArrays(const int size);
+
+        inline void bindArrayBuffer(const GLuint vbo);
+
+        inline void bindArrayBufferAndAttributes(const GLuint vbo);
+
+        inline void bindAttributes();
+
+        inline void bindElementBuffer(const GLuint ebo);
+
+        GLint *mIntArray A_NONNULLPOINTER;
+        GLint *mIntArrayCached A_NONNULLPOINTER;
+        ShaderProgram *mProgram;
+        float mAlphaCached;
+        int mVpCached;
+
+        float mFloatColor;
+        int mMaxVertices;
+        GLuint mProgramId;
+        GLuint mSimpleColorUniform;
+        GLint mPosAttrib;
+        GLint mTextureColorUniform;
+        GLuint mScreenUniform;
+        GLuint mDrawTypeUniform;
+        GLuint mVao;
+        GLuint mVbo;
+        GLuint mEbo;
+        GLuint mVboBinded;
+        GLuint mEboBinded;
+        GLuint mAttributesBinded;
+        bool mColorAlpha;
+        bool mTextureDraw;
+#ifdef DEBUG_BIND_TEXTURE
+        std::string mOldTexture;
+        unsigned mOldTextureId;
+#endif
+        FBOInfo mFbo;
+};
+#endif
+
+#endif  // RENDER_MOBILEOPENGL2GRAPHICS_H
diff --git a/src/render/rendererslistsdl.h b/src/render/rendererslistsdl.h
index 9bb0e1353..3c09b5dc8 100644
--- a/src/render/rendererslistsdl.h
+++ b/src/render/rendererslistsdl.h
@@ -58,7 +58,8 @@ const int renderToIndex[] =
     1,  // RENDER_SAFE_OPENGL
     1,  // RENDER_GLES_OPENGL
     1,  // RENDER_SDL2_DEFAULT
-    1   // RENDER_MODERN_OPENGL
+    1,  // RENDER_MODERN_OPENGL
+    1   // RENDER_GLES2_OPENGL
 };
 
 #else  // ANDROID
@@ -71,7 +72,8 @@ const RenderType indexToRender[] =
     RENDER_NORMAL_OPENGL,
     RENDER_SAFE_OPENGL,
     RENDER_GLES_OPENGL,
-    RENDER_MODERN_OPENGL
+    RENDER_MODERN_OPENGL,
+    RENDER_GLES2_OPENGL
 };
 
 const char *OPENGL_NAME[] =
@@ -85,10 +87,12 @@ const char *OPENGL_NAME[] =
     // TRANSLATORS: draw backend
     N_("Mobile OpenGL ES"),
     // TRANSLATORS: draw backend
-    N_("Modern OpenGL")
+    N_("Modern OpenGL"),
+    // TRANSLATORS: draw backend
+    N_("Mobile OpenGL ES 2"),
 };
 
-const int renderModesListSize = 5;
+const int renderModesListSize = 6;
 
 const int renderToIndex[] =
 {
@@ -97,7 +101,8 @@ const int renderToIndex[] =
     2,  // RENDER_SAFE_OPENGL
     3,  // RENDER_GLES_OPENGL
     0,  // RENDER_SDL2_DEFAULT
-    4   // RENDER_MODERN_OPENGL
+    4,  // RENDER_MODERN_OPENGL
+    5   // RENDER_GLES2_OPENGL
 };
 
 #endif  // ANDROID
@@ -126,7 +131,8 @@ const int renderToIndex[] =
     0,  // RENDER_SAFE_OPENGL
     0,  // RENDER_GLES_OPENGL
     0,  // RENDER_SDL2_DEFAULT
-    0   // RENDER_MODERN_OPENGL
+    0,  // RENDER_MODERN_OPENGL
+    0   // RENDER_GLES2_OPENGL
 };
 
 #endif  // USE_OPENGL
diff --git a/src/render/rendererslistsdl2.h b/src/render/rendererslistsdl2.h
index 3629438b8..d40b8617a 100644
--- a/src/render/rendererslistsdl2.h
+++ b/src/render/rendererslistsdl2.h
@@ -56,7 +56,8 @@ const int renderToIndex[] =
     2,  // RENDER_SAFE_OPENGL
     2,  // RENDER_GLES_OPENGL
     1,  // RENDER_SDL2_DEFAULT
-    2   // RENDER_MODERN_OPENGL
+    2,  // RENDER_MODERN_OPENGL
+    2   // RENDER_GLES_OPENGL
 };
 
 #else  // ANDROID
@@ -70,7 +71,8 @@ const RenderType indexToRender[] =
     RENDER_NORMAL_OPENGL,
     RENDER_SAFE_OPENGL,
     RENDER_GLES_OPENGL,
-    RENDER_MODERN_OPENGL
+    RENDER_MODERN_OPENGL,
+    RENDER_GLES2_OPENGL
 };
 
 const char *OPENGL_NAME[] =
@@ -86,10 +88,12 @@ const char *OPENGL_NAME[] =
     // TRANSLATORS: draw backend
     N_("Mobile OpenGL ES"),
     // TRANSLATORS: draw backend
-    N_("Modern OpenGL")
+    N_("Modern OpenGL"),
+    // TRANSLATORS: draw backend
+    N_("Mobile OpenGL ES 2")
 };
 
-const int renderModesListSize = 6;
+const int renderModesListSize = 7;
 
 const int renderToIndex[] =
 {
@@ -98,7 +102,8 @@ const int renderToIndex[] =
     3,  // RENDER_SAFE_OPENGL
     4,  // RENDER_GLES_OPENGL
     1,  // RENDER_SDL2_DEFAULT
-    5   // RENDER_MODERN_OPENGL
+    5,  // RENDER_MODERN_OPENGL
+    6   // RENDER_GLES2_OPENGL
 };
 
 #endif  // ANDROID
@@ -130,7 +135,8 @@ const int renderToIndex[] =
     0,  // RENDER_SAFE_OPENGL
     0,  // RENDER_GLES_OPENGL
     1,  // RENDER_SDL2_DEFAULT
-    0   // RENDER_MODERN_OPENGL
+    0,  // RENDER_MODERN_OPENGL
+    0   // RENDER_GLES2_OPENGL
 };
 
 #endif  // USE_OPENGL