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/*
* The Mana Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2012 The Mana Developers
*
* This file is part of The Mana 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 OPENGLGRAPHICS_H
#define OPENGLGRAPHICS_H
#ifdef USE_OPENGL
#include "graphics.h"
#define NO_SDL_GLEXT
#include <SDL_opengl.h>
#include <memory>
class VideoSettings;
class OpenGLGraphics final : public Graphics
{
public:
static std::unique_ptr<OpenGLGraphics> create(SDL_Window *window,
const VideoSettings &settings);
OpenGLGraphics(SDL_Window *window, SDL_GLContext glContext);
~OpenGLGraphics() override;
void setVSync(bool sync) override;
/**
* Sets whether input lag should be reduced.
*
* This means waiting until the graphics card has finished drawing and
* displaying the current frame until continuing towards the next,
* possibly at the cost of performance and CPU usage.
*/
void setReduceInputLag(bool reduceInputLag);
bool getReduceInputLag() const { return mReduceInputLag; }
void updateSize(int windowWidth, int windowHeight, float scale) override;
/**
* Draws a rescaled version of the image
*/
bool drawRescaledImage(const Image *image, int srcX, int srcY,
int dstX, int dstY,
int width, int height,
int desiredWidth, int desiredHeight,
bool useColor) override;
bool drawRescaledImageF(const Image *image,
int srcX, int srcY,
float dstX, float dstY,
int width, int height,
float desiredWidth, float desiredHeight,
bool useColor) override;
void drawImagePattern(const Image *image,
int x, int y,
int w, int h) override;
/**
* Draw a pattern based on a rescaled version of the given image...
*/
void drawRescaledImagePattern(const Image *image,
int x, int y, int w, int h,
int scaledWidth, int scaledHeight) override;
void updateScreen() override;
void windowToLogical(int windowX, int windowY,
float &logicalX, float &logicalY) const override;
bool pushClipArea(gcn::Rectangle area) override;
void popClipArea() override;
void setColor(const gcn::Color &color) override;
void drawPoint(int x, int y) override;
void drawLine(int x1, int y1, int x2, int y2) override;
void drawRectangle(const gcn::Rectangle &rect, bool filled);
void drawRectangle(const gcn::Rectangle &rect) override;
void fillRectangle(const gcn::Rectangle &rect) override;
/**
* Takes a screenshot and returns it as SDL surface.
*/
SDL_Surface *getScreenshot() override;
static void bindTexture(GLenum target, GLuint texture);
static GLuint mLastImage;
protected:
void setTexturingAndBlending(bool enable);
private:
void drawQuadArrayfi(int size);
void drawQuadArrayii(int size);
SDL_Window *mWindow = nullptr;
SDL_GLContext mContext = nullptr;
GLfloat *mFloatTexArray;
GLint *mIntTexArray;
GLint *mIntVertArray;
float mUserScale = 1.0f;
float mScaleX = 1.0f;
float mScaleY = 1.0f;
bool mAlpha = false;
bool mTexture = false;
bool mColorAlpha = false;
bool mReduceInputLag = true;
};
#endif //USE_OPENGL
#endif
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