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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 (at your option) 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef BACKENDS_GRAPHICS_SURFACESDL_GRAPHICS_H
#define BACKENDS_GRAPHICS_SURFACESDL_GRAPHICS_H
#include "backends/graphics/graphics.h"
#include "backends/graphics/sdl/sdl-graphics.h"
#include "graphics/pixelformat.h"
#include "graphics/scaler.h"
#include "common/events.h"
#include "common/system.h"
#include "backends/events/sdl/sdl-events.h"
#include "backends/platform/sdl/sdl-sys.h"
#ifndef RELEASE_BUILD
// Define this to allow for focus rectangle debugging
#define USE_SDL_DEBUG_FOCUSRECT
#endif
// We have (some) support for resizable windows when SDL2 is used. However
// the overlay still uses the resolution setup with SDL_SetVideoMode. This
// makes the GUI look subpar when the user resizes the window. In addition
// we do not adapt the scale factor right now. Thus, we disable this code
// path for now.
#if SDL_VERSION_ATLEAST(2, 0, 0) && 0
#define USE_SDL_RESIZABLE_WINDOW
#endif
#if !defined(_WIN32_WCE) && !defined(__SYMBIAN32__)
// Uncomment this to enable the 'on screen display' code.
#define USE_OSD 1
#endif
enum {
GFX_NORMAL = 0,
GFX_DOUBLESIZE = 1,
GFX_TRIPLESIZE = 2,
GFX_2XSAI = 3,
GFX_SUPER2XSAI = 4,
GFX_SUPEREAGLE = 5,
GFX_ADVMAME2X = 6,
GFX_ADVMAME3X = 7,
GFX_HQ2X = 8,
GFX_HQ3X = 9,
GFX_TV2X = 10,
GFX_DOTMATRIX = 11
};
class AspectRatio {
int _kw, _kh;
public:
AspectRatio() { _kw = _kh = 0; }
AspectRatio(int w, int h);
bool isAuto() const { return (_kw | _kh) == 0; }
int kw() const { return _kw; }
int kh() const { return _kh; }
};
/**
* SDL graphics manager
*/
class SurfaceSdlGraphicsManager : public SdlGraphicsManager, public Common::EventObserver {
public:
SurfaceSdlGraphicsManager(SdlEventSource *sdlEventSource, SdlWindow *window);
virtual ~SurfaceSdlGraphicsManager();
virtual void activateManager();
virtual void deactivateManager();
virtual bool hasFeature(OSystem::Feature f);
virtual void setFeatureState(OSystem::Feature f, bool enable);
virtual bool getFeatureState(OSystem::Feature f);
virtual const OSystem::GraphicsMode *getSupportedGraphicsModes() const;
virtual int getDefaultGraphicsMode() const;
virtual bool setGraphicsMode(int mode);
virtual int getGraphicsMode() const;
virtual void resetGraphicsScale();
#ifdef USE_RGB_COLOR
virtual Graphics::PixelFormat getScreenFormat() const { return _screenFormat; }
virtual Common::List<Graphics::PixelFormat> getSupportedFormats() const;
#endif
virtual const OSystem::GraphicsMode *getSupportedShaders() const;
virtual int getShader() const;
virtual bool setShader(int id);
virtual void initSize(uint w, uint h, const Graphics::PixelFormat *format = NULL);
virtual int getScreenChangeID() const { return _screenChangeCount; }
virtual void beginGFXTransaction();
virtual OSystem::TransactionError endGFXTransaction();
virtual int16 getHeight();
virtual int16 getWidth();
protected:
// PaletteManager API
virtual void setPalette(const byte *colors, uint start, uint num);
virtual void grabPalette(byte *colors, uint start, uint num);
public:
virtual void copyRectToScreen(const void *buf, int pitch, int x, int y, int w, int h);
virtual Graphics::Surface *lockScreen();
virtual void unlockScreen();
virtual void fillScreen(uint32 col);
virtual void updateScreen();
virtual void setShakePos(int shakeOffset);
virtual void setFocusRectangle(const Common::Rect& rect);
virtual void clearFocusRectangle();
virtual void showOverlay();
virtual void hideOverlay();
virtual Graphics::PixelFormat getOverlayFormat() const { return _overlayFormat; }
virtual void clearOverlay();
virtual void grabOverlay(void *buf, int pitch);
virtual void copyRectToOverlay(const void *buf, int pitch, int x, int y, int w, int h);
virtual int16 getOverlayHeight() { return _videoMode.overlayHeight; }
virtual int16 getOverlayWidth() { return _videoMode.overlayWidth; }
virtual bool showMouse(bool visible);
virtual void warpMouse(int x, int y);
virtual void setMouseCursor(const void *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale = false, const Graphics::PixelFormat *format = NULL);
virtual void setCursorPalette(const byte *colors, uint start, uint num);
#ifdef USE_OSD
virtual void displayMessageOnOSD(const char *msg);
virtual void displayActivityIconOnOSD(const Graphics::Surface *icon);
#endif
// Override from Common::EventObserver
bool notifyEvent(const Common::Event &event);
// SdlGraphicsManager interface
virtual void notifyVideoExpose();
virtual void notifyResize(const uint width, const uint height);
virtual void transformMouseCoordinates(Common::Point &point);
virtual void notifyMousePos(Common::Point mouse);
protected:
#ifdef USE_OSD
/** Surface containing the OSD message */
SDL_Surface *_osdMessageSurface;
/** Transparency level of the OSD message */
uint8 _osdMessageAlpha;
/** When to start the fade out */
uint32 _osdMessageFadeStartTime;
/** Enum with OSD options */
enum {
kOSDFadeOutDelay = 2 * 1000, /** < Delay before the OSD is faded out (in milliseconds) */
kOSDFadeOutDuration = 500, /** < Duration of the OSD fade out (in milliseconds) */
kOSDInitialAlpha = 80 /** < Initial alpha level, in percent */
};
/** Screen rectangle where the OSD message is drawn */
SDL_Rect getOSDMessageRect() const;
/** Clear the currently displayed OSD message if any */
void removeOSDMessage();
/** Surface containing the OSD background activity icon */
SDL_Surface *_osdIconSurface;
/** Screen rectangle where the OSD background activity icon is drawn */
SDL_Rect getOSDIconRect() const;
void updateOSD();
void drawOSD();
#endif
/** Hardware screen */
SDL_Surface *_hwscreen;
#if SDL_VERSION_ATLEAST(2, 0, 0)
/* SDL2 features a different API for 2D graphics. We create a wrapper
* around this API to keep the code paths as close as possible. */
SDL_Renderer *_renderer;
SDL_Texture *_screenTexture;
SDL_Rect _viewport;
int _windowWidth, _windowHeight;
void deinitializeRenderer();
void setWindowResolution(int width, int height);
void recreateScreenTexture();
virtual SDL_Surface *SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags);
void SDL_UpdateRects(SDL_Surface *screen, int numrects, SDL_Rect *rects);
#endif
/** Unseen game screen */
SDL_Surface *_screen;
#ifdef USE_RGB_COLOR
Graphics::PixelFormat _screenFormat;
Graphics::PixelFormat _cursorFormat;
Common::List<Graphics::PixelFormat> _supportedFormats;
/**
* Update the list of supported pixel formats.
* This method is invoked by loadGFXMode().
*/
void detectSupportedFormats();
#endif
/** Temporary screen (for scalers) */
SDL_Surface *_tmpscreen;
/** Temporary screen (for scalers) */
SDL_Surface *_tmpscreen2;
SDL_Surface *_overlayscreen;
bool _overlayVisible;
Graphics::PixelFormat _overlayFormat;
enum {
kTransactionNone = 0,
kTransactionActive = 1,
kTransactionRollback = 2
};
struct TransactionDetails {
bool sizeChanged;
bool needHotswap;
bool needUpdatescreen;
#if SDL_VERSION_ATLEAST(2, 0, 0)
bool needTextureUpdate;
#endif
#ifdef USE_RGB_COLOR
bool formatChanged;
#endif
};
TransactionDetails _transactionDetails;
struct VideoState {
bool setup;
bool fullscreen;
bool aspectRatioCorrection;
AspectRatio desiredAspectRatio;
#if SDL_VERSION_ATLEAST(2, 0, 0)
bool filtering;
#endif
int mode;
int scaleFactor;
int screenWidth, screenHeight;
int overlayWidth, overlayHeight;
int hardwareWidth, hardwareHeight;
#ifdef USE_RGB_COLOR
Graphics::PixelFormat format;
#endif
};
VideoState _videoMode, _oldVideoMode;
#if defined(WIN32) && !SDL_VERSION_ATLEAST(2, 0, 0)
/**
* Original BPP to restore the video mode on unload.
*
* This is required to make listing video modes for the OpenGL output work
* on Windows 8+. On these systems OpenGL modes are only available for
* 32bit formats. However, we setup a 16bit format and thus mode listings
* for OpenGL will return an empty list afterwards.
*
* In theory we might require this behavior on non-Win32 platforms too.
* However, SDL sometimes gives us invalid pixel formats for X11 outputs
* causing crashes when trying to setup the original pixel format.
* See bug #7038 "IRIX: X BadMatch when trying to start any 640x480 game".
*/
uint8 _originalBitsPerPixel;
#endif
/** Force full redraw on next updateScreen */
bool _forceFull;
ScalerProc *_scalerProc;
int _scalerType;
int _transactionMode;
// Indicates whether it is needed to free _hwsurface in destructor
bool _displayDisabled;
bool _screenIsLocked;
Graphics::Surface _framebuffer;
int _screenChangeCount;
int _currentShader;
int _numShaders;
enum {
NUM_DIRTY_RECT = 100,
MAX_SCALING = 3
};
// Dirty rect management
SDL_Rect _dirtyRectList[NUM_DIRTY_RECT];
int _numDirtyRects;
struct MousePos {
// The mouse position, using either virtual (game) or real
// (overlay) coordinates.
int16 x, y;
// The size and hotspot of the original cursor image.
int16 w, h;
int16 hotX, hotY;
// The size and hotspot of the pre-scaled cursor image, in real
// coordinates.
int16 rW, rH;
int16 rHotX, rHotY;
// The size and hotspot of the pre-scaled cursor image, in game
// coordinates.
int16 vW, vH;
int16 vHotX, vHotY;
MousePos() : x(0), y(0), w(0), h(0), hotX(0), hotY(0),
rW(0), rH(0), rHotX(0), rHotY(0), vW(0), vH(0),
vHotX(0), vHotY(0)
{ }
};
bool _mouseVisible;
bool _mouseNeedsRedraw;
byte *_mouseData;
SDL_Rect _mouseBackup;
MousePos _mouseCurState;
#ifdef USE_RGB_COLOR
uint32 _mouseKeyColor;
#else
byte _mouseKeyColor;
#endif
bool _cursorDontScale;
bool _cursorPaletteDisabled;
SDL_Surface *_mouseOrigSurface;
SDL_Surface *_mouseSurface;
enum {
kMouseColorKey = 1
};
// Shake mode
int _currentShakePos;
int _newShakePos;
// Palette data
SDL_Color *_currentPalette;
uint _paletteDirtyStart, _paletteDirtyEnd;
// Cursor palette data
SDL_Color *_cursorPalette;
/**
* Mutex which prevents multiple threads from interfering with each other
* when accessing the screen.
*/
OSystem::MutexRef _graphicsMutex;
#ifdef USE_SDL_DEBUG_FOCUSRECT
bool _enableFocusRectDebugCode;
bool _enableFocusRect;
Common::Rect _focusRect;
#endif
virtual void addDirtyRect(int x, int y, int w, int h, bool realCoordinates = false);
virtual void drawMouse();
virtual void undrawMouse();
virtual void blitCursor();
virtual void internUpdateScreen();
virtual void updateShader();
virtual bool loadGFXMode();
virtual void unloadGFXMode();
virtual bool hotswapGFXMode();
virtual void setFullscreenMode(bool enable);
virtual void setAspectRatioCorrection(bool enable);
#if SDL_VERSION_ATLEAST(2, 0, 0)
virtual void setFilteringMode(bool enable);
#endif
virtual int effectiveScreenHeight() const;
virtual void setGraphicsModeIntern();
virtual bool handleScalerHotkeys(Common::KeyCode key);
virtual bool isScalerHotkey(const Common::Event &event);
virtual void setMousePos(int x, int y);
virtual void toggleFullScreen();
virtual bool saveScreenshot(const char *filename);
};
#endif
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