Add initial version of mobile OpenGL backend.

1 files changed, 204 insertions, 0 deletions

diff --git a/src/mobileopenglgraphics.h b/src/mobileopenglgraphics.h
new file mode 100644
index 000000000..350c21a59
--- /dev/null
+++ b/src/mobileopenglgraphics.h
@@ -0,0 +1,204 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2012  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 MOBILEOPENGLGRAPHICS_H
+#define MOBILEOPENGLGRAPHICS_H
+
+#include "main.h"
+#ifdef USE_OPENGL
+
+#include "localconsts.h"
+#include "graphics.h"
+
+#include "resources/fboinfo.h"
+
+#ifdef ANDROID
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <GLES2/gl2.h>
+#else
+#define GL_GLEXT_PROTOTYPES 1
+#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();
+
+        bool setVideoMode(const int w, const int h, const int bpp,
+                          const bool fs, const bool hwaccel,
+                          const bool resize, const bool noFrame) override;
+
+
+        /**
+         * Draws a resclaled version of the image
+         */
+        bool drawRescaledImage(Image *const image, int srcX, int srcY,
+                               int dstX, int dstY,
+                               const int width, const int height,
+                               const int desiredWidth, const int desiredHeight,
+                               const bool useColor) override;
+
+        /**
+         * Used to get the smooth rescale option over the standard function.
+         */
+        bool drawRescaledImage(Image *const image, int srcX, int srcY,
+                               int dstX, int dstY,
+                               const int width, const int height,
+                               const int desiredWidth, const int desiredHeight,
+                               const bool useColor, bool smooth);
+
+        void drawImagePattern(const Image *const image,
+                              const int x, const int y,
+                              const int w, const int h) override;
+
+        /**
+         * Draw a pattern based on a rescaled version of the given image...
+         */
+        void drawRescaledImagePattern(const Image *const image,
+                                      const int x, const int y,
+                                      const int w, const int h,
+                                      const int scaledWidth,
+                                      const int scaledHeight) override;
+
+        void calcImagePattern(GraphicsVertexes *const vert,
+                              const Image *const image,
+                              const int x, const int y,
+                              const int w, const int h) override;
+
+        void calcTile(ImageVertexes *const vert, const Image *const image,
+                      int x, int y) override;
+
+        void drawTile(ImageVertexes *const vert) override;
+
+        void drawImagePattern2(GraphicsVertexes *const vert,
+                               const Image *const image) override;
+
+        void updateScreen() override;
+
+        void _beginDraw();
+
+        void _endDraw();
+
+        bool pushClipArea(gcn::Rectangle area);
+
+        void popClipArea();
+
+        void setColor(const gcn::Color &color);
+
+        void drawPoint(int x, int y);
+
+        void drawLine(int x1, int y1, int x2, int y2);
+
+        void drawRectangle(const gcn::Rectangle &rect, bool filled);
+
+        void drawRectangle(const gcn::Rectangle &rect);
+
+        void fillRectangle(const gcn::Rectangle &rect);
+
+        void setTargetPlane(int width, int height);
+
+        inline void drawTriangleArrayfs(GLshort *shortVertArray,
+                                        GLfloat *floatTexArray,
+                                        const int size);
+
+        inline void drawTriangleArrayfs(int size);
+
+        inline void drawLineArrays(int size);
+
+        inline void drawVertexes(NormalOpenGLGraphicsVertexes &ogl);
+
+        void initArrays() override;
+
+        static void dumpSettings();
+
+        /**
+         * Takes a screenshot and returns it as SDL surface.
+         */
+        SDL_Surface *getScreenshot() override;
+
+        void prepareScreenshot() override;
+
+        bool drawNet(const int x1, const int y1, const int x2, const int y2,
+                     const int width, const int height) override;
+
+        int getMemoryUsage();
+
+        void updateTextureFormat();
+
+        static void bindTexture(GLenum target, GLuint texture);
+
+        static GLuint mLastImage;
+
+    protected:
+        bool drawImage2(const Image *const image,
+                        int srcX, int srcY,
+                        int dstX, int dstY,
+                        const int width, const int height,
+                        const bool useColor) override;
+
+        void setTexturingAndBlending(bool enable);
+
+        void logString(const char *format, GLenum num);
+
+        void updateMemoryInfo();
+
+        void debugBindTexture(const Image *image);
+
+    private:
+        void inline setColorAlpha(float alpha);
+
+        void inline restoreColor();
+
+        GLfloat *mFloatTexArray;
+        GLint *mIntTexArray;
+        GLint *mIntVertArray;
+        GLshort *mShortVertArray;
+        bool mAlpha;
+        bool mTexture;
+
+        bool mIsByteColor;
+        gcn::Color mByteColor;
+        float mFloatColor;
+        int mMaxVertices;
+        bool mColorAlpha;
+        FBOInfo mFbo;
+#ifdef DEBUG_BIND_TEXTURE
+        std::string mOldTexture;
+        unsigned mOldTextureId;
+#endif
+};
+#endif
+
+//extern unsigned int vertexBufSize;
+
+#endif