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surfacesdl-graphics.cpp
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surfacesdl-graphics.cpp
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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.
*
*/
#include "common/scummsys.h"
#if defined(SDL_BACKEND)
#include "backends/graphics/surfacesdl/surfacesdl-graphics.h"
#include "backends/events/sdl/sdl-events.h"
#include "common/config-manager.h"
#include "common/mutex.h"
#include "common/textconsole.h"
#include "common/translation.h"
#include "common/util.h"
#include "common/file.h"
#include "common/frac.h"
#ifdef USE_RGB_COLOR
#include "common/list.h"
#endif
#include "graphics/font.h"
#include "graphics/fontman.h"
#include "graphics/scaler.h"
#include "graphics/scaler/aspect.h"
#include "graphics/surface.h"
#include "gui/debugger.h"
#include "gui/EventRecorder.h"
#ifdef USE_PNG
#include "image/png.h"
#else
#include "image/bmp.h"
#endif
#ifdef USE_TTS
#include "common/text-to-speech.h"
#endif
// SDL surface flags which got removed in SDL2.
#if SDL_VERSION_ATLEAST(2, 0, 0)
#define SDL_SRCCOLORKEY 0
#define SDL_SRCALPHA 0
#define SDL_FULLSCREEN 0x40000000
#endif
static const OSystem::GraphicsMode s_supportedGraphicsModes[] = {
{"1x", _s("Normal (no scaling)"), GFX_NORMAL},
#ifdef USE_SCALERS
{"2x", "2x", GFX_DOUBLESIZE},
{"3x", "3x", GFX_TRIPLESIZE},
{"2xsai", "2xSAI", GFX_2XSAI},
{"super2xsai", "Super2xSAI", GFX_SUPER2XSAI},
{"supereagle", "SuperEagle", GFX_SUPEREAGLE},
{"advmame2x", "AdvMAME2x", GFX_ADVMAME2X},
{"advmame3x", "AdvMAME3x", GFX_ADVMAME3X},
#ifdef USE_HQ_SCALERS
{"hq2x", "HQ2x", GFX_HQ2X},
{"hq3x", "HQ3x", GFX_HQ3X},
#endif
{"tv2x", "TV2x", GFX_TV2X},
{"dotmatrix", "DotMatrix", GFX_DOTMATRIX},
#endif
{0, 0, 0}
};
#if SDL_VERSION_ATLEAST(2, 0, 0)
const OSystem::GraphicsMode s_supportedStretchModes[] = {
{"center", _s("Center"), STRETCH_CENTER},
{"pixel-perfect", _s("Pixel-perfect scaling"), STRETCH_INTEGRAL},
{"fit", _s("Fit to window"), STRETCH_FIT},
{"stretch", _s("Stretch to window"), STRETCH_STRETCH},
{"fit_force_aspect", _s("Fit to window (4:3)"), STRETCH_FIT_FORCE_ASPECT},
{nullptr, nullptr, 0}
};
#endif
DECLARE_TRANSLATION_ADDITIONAL_CONTEXT("Normal (no scaling)", "lowres")
// Table of the cursor scalers [scaleFactor - 1]
static ScalerProc *scalersMagn[3] = {
#ifdef USE_SCALERS
Normal1x, AdvMame2x, AdvMame3x
#else // remove dependencies on other scalers
Normal1x, Normal1x, Normal1x
#endif
};
static const int s_gfxModeSwitchTable[][4] = {
{ GFX_NORMAL, GFX_DOUBLESIZE, GFX_TRIPLESIZE, -1 },
{ GFX_NORMAL, GFX_ADVMAME2X, GFX_ADVMAME3X, -1 },
{ GFX_NORMAL, GFX_HQ2X, GFX_HQ3X, -1 },
{ GFX_NORMAL, GFX_2XSAI, -1, -1 },
{ GFX_NORMAL, GFX_SUPER2XSAI, -1, -1 },
{ GFX_NORMAL, GFX_SUPEREAGLE, -1, -1 },
{ GFX_NORMAL, GFX_TV2X, -1, -1 },
{ GFX_NORMAL, GFX_DOTMATRIX, -1, -1 }
};
AspectRatio::AspectRatio(int w, int h) {
// TODO : Validation and so on...
// Currently, we just ensure the program don't instantiate non-supported aspect ratios
_kw = w;
_kh = h;
}
#if !defined(__SYMBIAN32__) && defined(USE_SCALERS)
static AspectRatio getDesiredAspectRatio() {
const size_t AR_COUNT = 4;
const char *desiredAspectRatioAsStrings[AR_COUNT] = { "auto", "4/3", "16/9", "16/10" };
const AspectRatio desiredAspectRatios[AR_COUNT] = { AspectRatio(0, 0), AspectRatio(4,3), AspectRatio(16,9), AspectRatio(16,10) };
//TODO : We could parse an arbitrary string, if we code enough proper validation
Common::String desiredAspectRatio = ConfMan.get("desired_screen_aspect_ratio");
for (size_t i = 0; i < AR_COUNT; i++) {
assert(desiredAspectRatioAsStrings[i] != NULL);
if (!scumm_stricmp(desiredAspectRatio.c_str(), desiredAspectRatioAsStrings[i])) {
return desiredAspectRatios[i];
}
}
// TODO : Report a warning
return AspectRatio(0, 0);
}
#endif
SurfaceSdlGraphicsManager::SurfaceSdlGraphicsManager(SdlEventSource *sdlEventSource, SdlWindow *window)
:
SdlGraphicsManager(sdlEventSource, window),
#ifdef USE_OSD
_osdMessageSurface(nullptr), _osdMessageAlpha(SDL_ALPHA_TRANSPARENT), _osdMessageFadeStartTime(0),
_osdIconSurface(nullptr),
#endif
#if SDL_VERSION_ATLEAST(2, 0, 0)
_renderer(nullptr), _screenTexture(nullptr),
#endif
#if defined(WIN32) && !SDL_VERSION_ATLEAST(2, 0, 0)
_originalBitsPerPixel(0),
#endif
_screen(0), _tmpscreen(0),
_screenFormat(Graphics::PixelFormat::createFormatCLUT8()),
_cursorFormat(Graphics::PixelFormat::createFormatCLUT8()),
_overlayscreen(0), _tmpscreen2(0),
_scalerProc(0), _screenChangeCount(0),
_mouseData(nullptr), _mouseSurface(nullptr),
_mouseOrigSurface(nullptr), _cursorDontScale(false), _cursorPaletteDisabled(true),
_currentShakeXOffset(0), _currentShakeYOffset(0),
_paletteDirtyStart(0), _paletteDirtyEnd(0),
_screenIsLocked(false),
_displayDisabled(false),
#ifdef USE_SDL_DEBUG_FOCUSRECT
_enableFocusRectDebugCode(false), _enableFocusRect(false), _focusRect(),
#endif
_transactionMode(kTransactionNone) {
// allocate palette storage
_currentPalette = (SDL_Color *)calloc(sizeof(SDL_Color), 256);
_cursorPalette = (SDL_Color *)calloc(sizeof(SDL_Color), 256);
_mouseBackup.x = _mouseBackup.y = _mouseBackup.w = _mouseBackup.h = 0;
#ifdef USE_SDL_DEBUG_FOCUSRECT
if (ConfMan.hasKey("use_sdl_debug_focusrect"))
_enableFocusRectDebugCode = ConfMan.getBool("use_sdl_debug_focusrect");
#endif
#if !defined(__SYMBIAN32__) && defined(USE_SCALERS)
_videoMode.mode = GFX_DOUBLESIZE;
_videoMode.scaleFactor = 2;
_videoMode.aspectRatioCorrection = ConfMan.getBool("aspect_ratio");
_videoMode.desiredAspectRatio = getDesiredAspectRatio();
_scalerProc = Normal2x;
#else // for small screen platforms
_videoMode.mode = GFX_NORMAL;
_videoMode.scaleFactor = 1;
_videoMode.aspectRatioCorrection = false;
_scalerProc = Normal1x;
#endif
_scalerType = 0;
_videoMode.fullscreen = ConfMan.getBool("fullscreen");
_videoMode.filtering = ConfMan.getBool("filtering");
#if SDL_VERSION_ATLEAST(2, 0, 0)
_videoMode.stretchMode = STRETCH_FIT;
#endif
}
SurfaceSdlGraphicsManager::~SurfaceSdlGraphicsManager() {
unloadGFXMode();
if (_mouseOrigSurface) {
SDL_FreeSurface(_mouseOrigSurface);
if (_mouseOrigSurface == _mouseSurface) {
_mouseSurface = nullptr;
}
}
if (_mouseSurface) {
SDL_FreeSurface(_mouseSurface);
}
free(_currentPalette);
free(_cursorPalette);
delete[] _mouseData;
}
bool SurfaceSdlGraphicsManager::hasFeature(OSystem::Feature f) const {
return
(f == OSystem::kFeatureFullscreenMode) ||
(f == OSystem::kFeatureAspectRatioCorrection) ||
(f == OSystem::kFeatureFilteringMode) ||
#if SDL_VERSION_ATLEAST(2, 0, 0)
(f == OSystem::kFeatureStretchMode) ||
#endif
(f == OSystem::kFeatureCursorPalette) ||
(f == OSystem::kFeatureIconifyWindow);
}
void SurfaceSdlGraphicsManager::setFeatureState(OSystem::Feature f, bool enable) {
switch (f) {
case OSystem::kFeatureFullscreenMode:
setFullscreenMode(enable);
break;
case OSystem::kFeatureAspectRatioCorrection:
setAspectRatioCorrection(enable);
break;
case OSystem::kFeatureFilteringMode:
setFilteringMode(enable);
break;
case OSystem::kFeatureCursorPalette:
_cursorPaletteDisabled = !enable;
blitCursor();
break;
case OSystem::kFeatureIconifyWindow:
if (enable)
_window->iconifyWindow();
break;
default:
break;
}
}
bool SurfaceSdlGraphicsManager::getFeatureState(OSystem::Feature f) const {
// We need to allow this to be called from within a transaction, since we
// currently use it to retreive the graphics state, when switching from
// SDL->OpenGL mode for example.
//assert(_transactionMode == kTransactionNone);
switch (f) {
case OSystem::kFeatureFullscreenMode:
return _videoMode.fullscreen;
case OSystem::kFeatureAspectRatioCorrection:
return _videoMode.aspectRatioCorrection;
case OSystem::kFeatureFilteringMode:
return _videoMode.filtering;
case OSystem::kFeatureCursorPalette:
return !_cursorPaletteDisabled;
default:
return false;
}
}
const OSystem::GraphicsMode *SurfaceSdlGraphicsManager::getSupportedGraphicsModes() const {
return s_supportedGraphicsModes;
}
int SurfaceSdlGraphicsManager::getDefaultGraphicsMode() const {
#ifdef USE_SCALERS
return GFX_DOUBLESIZE;
#else
return GFX_NORMAL;
#endif
}
void SurfaceSdlGraphicsManager::resetGraphicsScale() {
setGraphicsMode(s_gfxModeSwitchTable[_scalerType][0]);
}
void SurfaceSdlGraphicsManager::beginGFXTransaction() {
assert(_transactionMode == kTransactionNone);
_transactionMode = kTransactionActive;
_transactionDetails.sizeChanged = false;
_transactionDetails.needHotswap = false;
_transactionDetails.needUpdatescreen = false;
#if SDL_VERSION_ATLEAST(2, 0, 0)
_transactionDetails.needDisplayResize = false;
_transactionDetails.needTextureUpdate = false;
#endif
#ifdef USE_RGB_COLOR
_transactionDetails.formatChanged = false;
#endif
_oldVideoMode = _videoMode;
}
OSystem::TransactionError SurfaceSdlGraphicsManager::endGFXTransaction() {
int errors = OSystem::kTransactionSuccess;
assert(_transactionMode != kTransactionNone);
if (_transactionMode == kTransactionRollback) {
if (_videoMode.fullscreen != _oldVideoMode.fullscreen) {
errors |= OSystem::kTransactionFullscreenFailed;
_videoMode.fullscreen = _oldVideoMode.fullscreen;
} else if (_videoMode.aspectRatioCorrection != _oldVideoMode.aspectRatioCorrection) {
errors |= OSystem::kTransactionAspectRatioFailed;
_videoMode.aspectRatioCorrection = _oldVideoMode.aspectRatioCorrection;
} else if (_videoMode.mode != _oldVideoMode.mode) {
errors |= OSystem::kTransactionModeSwitchFailed;
_videoMode.mode = _oldVideoMode.mode;
_videoMode.scaleFactor = _oldVideoMode.scaleFactor;
#if SDL_VERSION_ATLEAST(2, 0, 0)
} else if (_videoMode.stretchMode != _oldVideoMode.stretchMode) {
errors |= OSystem::kTransactionStretchModeSwitchFailed;
_videoMode.stretchMode = _oldVideoMode.stretchMode;
#endif
} else if (_videoMode.filtering != _oldVideoMode.filtering) {
errors |= OSystem::kTransactionFilteringFailed;
_videoMode.filtering = _oldVideoMode.filtering;
#ifdef USE_RGB_COLOR
} else if (_videoMode.format != _oldVideoMode.format) {
errors |= OSystem::kTransactionFormatNotSupported;
_videoMode.format = _oldVideoMode.format;
_screenFormat = _videoMode.format;
#endif
} else if (_videoMode.screenWidth != _oldVideoMode.screenWidth || _videoMode.screenHeight != _oldVideoMode.screenHeight) {
errors |= OSystem::kTransactionSizeChangeFailed;
_videoMode.screenWidth = _oldVideoMode.screenWidth;
_videoMode.screenHeight = _oldVideoMode.screenHeight;
_videoMode.overlayWidth = _oldVideoMode.overlayWidth;
_videoMode.overlayHeight = _oldVideoMode.overlayHeight;
}
if (_videoMode.fullscreen == _oldVideoMode.fullscreen &&
_videoMode.aspectRatioCorrection == _oldVideoMode.aspectRatioCorrection &&
_videoMode.mode == _oldVideoMode.mode &&
_videoMode.filtering == _oldVideoMode.filtering &&
_videoMode.screenWidth == _oldVideoMode.screenWidth &&
_videoMode.screenHeight == _oldVideoMode.screenHeight) {
// Our new video mode would now be exactly the same as the
// old one. Since we still can not assume SDL_SetVideoMode
// to be working fine, we need to invalidate the old video
// mode, so loadGFXMode would error out properly.
_oldVideoMode.setup = false;
}
}
#ifdef USE_RGB_COLOR
if (_transactionDetails.sizeChanged || _transactionDetails.formatChanged) {
#else
if (_transactionDetails.sizeChanged) {
#endif
unloadGFXMode();
if (!loadGFXMode()) {
if (_oldVideoMode.setup) {
_transactionMode = kTransactionRollback;
errors |= endGFXTransaction();
}
} else {
setGraphicsModeIntern();
clearOverlay();
_videoMode.setup = true;
// OSystem_SDL::pollEvent used to update the screen change count,
// but actually it gives problems when a video mode was changed
// but OSystem_SDL::pollEvent was not called. This for example
// caused a crash under certain circumstances when returning to launcher.
// To fix this issue we update the screen change count right here.
_screenChangeCount++;
}
} else if (_transactionDetails.needHotswap) {
setGraphicsModeIntern();
if (!hotswapGFXMode()) {
if (_oldVideoMode.setup) {
_transactionMode = kTransactionRollback;
errors |= endGFXTransaction();
}
} else {
_videoMode.setup = true;
// OSystem_SDL::pollEvent used to update the screen change count,
// but actually it gives problems when a video mode was changed
// but OSystem_SDL::pollEvent was not called. This for example
// caused a crash under certain circumstances when returning to launcher.
// To fix this issue we update the screen change count right here.
_screenChangeCount++;
#if SDL_VERSION_ATLEAST(2, 0, 0)
if (_transactionDetails.needDisplayResize)
recalculateDisplayAreas();
#endif
if (_transactionDetails.needUpdatescreen)
internUpdateScreen();
}
#if SDL_VERSION_ATLEAST(2, 0, 0)
} else if (_transactionDetails.needTextureUpdate) {
setGraphicsModeIntern();
recreateScreenTexture();
if (_transactionDetails.needDisplayResize)
recalculateDisplayAreas();
internUpdateScreen();
#endif
} else if (_transactionDetails.needUpdatescreen) {
setGraphicsModeIntern();
#if SDL_VERSION_ATLEAST(2, 0, 0)
if (_transactionDetails.needDisplayResize)
recalculateDisplayAreas();
#endif
internUpdateScreen();
}
_transactionMode = kTransactionNone;
return (OSystem::TransactionError)errors;
}
Graphics::PixelFormat SurfaceSdlGraphicsManager::convertSDLPixelFormat(SDL_PixelFormat *in) const {
Graphics::PixelFormat out(in->BytesPerPixel,
8 - in->Rloss, 8 - in->Gloss,
8 - in->Bloss, 8 - in->Aloss,
in->Rshift, in->Gshift,
in->Bshift, in->Ashift);
// Workaround to SDL not providing an accurate Aloss value on some platforms.
if (in->Amask == 0)
out.aLoss = 8;
return out;
}
#ifdef USE_RGB_COLOR
Common::List<Graphics::PixelFormat> SurfaceSdlGraphicsManager::getSupportedFormats() const {
assert(!_supportedFormats.empty());
return _supportedFormats;
}
#if SDL_VERSION_ATLEAST(2, 0, 0)
static void maskToBitCount(Uint32 mask, uint8 &numBits, uint8 &shift) {
numBits = 0;
shift = 32;
for (int i = 0; i < 32; ++i) {
if (mask & 1) {
if (i < shift) {
shift = i;
}
++numBits;
}
mask >>= 1;
}
}
#endif
void SurfaceSdlGraphicsManager::detectSupportedFormats() {
_supportedFormats.clear();
Graphics::PixelFormat format = Graphics::PixelFormat::createFormatCLUT8();
#if SDL_VERSION_ATLEAST(2, 0, 0)
{
SDL_Window *window = _window->getSDLWindow();
if (window == nullptr) {
error("Could not find ScummVM window for retrieving default display mode");
}
const int displayIndex = SDL_GetWindowDisplayIndex(window);
if (displayIndex < 0) {
error("Could not find ScummVM window display index");
}
SDL_DisplayMode defaultMode;
if (SDL_GetDesktopDisplayMode(displayIndex, &defaultMode) != 0) {
error("Could not get default system display mode");
}
int bpp;
Uint32 rMask, gMask, bMask, aMask;
if (SDL_PixelFormatEnumToMasks(defaultMode.format, &bpp, &rMask, &gMask, &bMask, &aMask) != SDL_TRUE) {
error("Could not convert system pixel format %s to masks", SDL_GetPixelFormatName(defaultMode.format));
}
const uint8 bytesPerPixel = SDL_BYTESPERPIXEL(defaultMode.format);
uint8 rBits, rShift, gBits, gShift, bBits, bShift, aBits, aShift;
maskToBitCount(rMask, rBits, rShift);
maskToBitCount(gMask, gBits, gShift);
maskToBitCount(bMask, bBits, bShift);
maskToBitCount(aMask, aBits, aShift);
format = Graphics::PixelFormat(bytesPerPixel, rBits, gBits, bBits, aBits, rShift, gShift, bShift, aShift);
_supportedFormats.push_back(format);
}
#endif
// Some tables with standard formats that we always list
// as "supported". If frontend code tries to use one of
// these, we will perform the necessary format
// conversion in the background. Of course this incurs a
// performance hit, but on desktop ports this should not
// matter. We still push the currently active format to
// the front, so if frontend code just uses the first
// available format, it will get one that is "cheap" to
// use.
const Graphics::PixelFormat RGBList[] = {
// RGBA8888, ARGB8888, RGB888
Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0),
Graphics::PixelFormat(4, 8, 8, 8, 8, 16, 8, 0, 24),
Graphics::PixelFormat(3, 8, 8, 8, 0, 16, 8, 0, 0),
// RGB565, XRGB1555, RGB555, RGBA4444, ARGB4444
Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0),
Graphics::PixelFormat(2, 5, 5, 5, 1, 10, 5, 0, 15),
Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0),
Graphics::PixelFormat(2, 4, 4, 4, 4, 12, 8, 4, 0),
Graphics::PixelFormat(2, 4, 4, 4, 4, 8, 4, 0, 12)
};
const Graphics::PixelFormat BGRList[] = {
// ABGR8888, BGRA8888, BGR888
Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24),
Graphics::PixelFormat(4, 8, 8, 8, 8, 8, 16, 24, 0),
Graphics::PixelFormat(3, 8, 8, 8, 0, 0, 8, 16, 0),
// BGR565, XBGR1555, BGR555, ABGR4444, BGRA4444
Graphics::PixelFormat(2, 5, 6, 5, 0, 0, 5, 11, 0),
Graphics::PixelFormat(2, 5, 5, 5, 1, 0, 5, 10, 15),
Graphics::PixelFormat(2, 5, 5, 5, 0, 0, 5, 10, 0),
Graphics::PixelFormat(2, 4, 4, 4, 4, 0, 4, 8, 12),
Graphics::PixelFormat(2, 4, 4, 4, 4, 4, 8, 12, 0)
};
if (_hwScreen) {
// Get our currently set hardware format
Graphics::PixelFormat hwFormat = convertSDLPixelFormat(_hwScreen->format);
_supportedFormats.push_back(hwFormat);
#if !SDL_VERSION_ATLEAST(2, 0, 0)
format = hwFormat;
#endif
}
// TODO: prioritize matching alpha masks
int i;
// Push some RGB formats
for (i = 0; i < ARRAYSIZE(RGBList); i++) {
if (_hwScreen && (RGBList[i].bytesPerPixel > format.bytesPerPixel))
continue;
if (RGBList[i] != format)
_supportedFormats.push_back(RGBList[i]);
}
// Push some BGR formats
for (i = 0; i < ARRAYSIZE(BGRList); i++) {
if (_hwScreen && (BGRList[i].bytesPerPixel > format.bytesPerPixel))
continue;
if (BGRList[i] != format)
_supportedFormats.push_back(BGRList[i]);
}
// Finally, we always supposed 8 bit palette graphics
_supportedFormats.push_back(Graphics::PixelFormat::createFormatCLUT8());
}
#endif
int SurfaceSdlGraphicsManager::getGraphicsModeScale(int mode) const {
int scale;
switch (mode) {
case GFX_NORMAL:
scale = 1;
break;
#ifdef USE_SCALERS
case GFX_DOUBLESIZE:
case GFX_2XSAI:
case GFX_SUPER2XSAI:
case GFX_SUPEREAGLE:
case GFX_ADVMAME2X:
case GFX_TV2X:
case GFX_DOTMATRIX:
#ifdef USE_HQ_SCALERS
case GFX_HQ2X:
#endif
scale = 2;
break;
case GFX_TRIPLESIZE:
case GFX_ADVMAME3X:
#ifdef USE_HQ_SCALERS
case GFX_HQ3X:
#endif
scale = 3;
break;
#endif
default:
scale = -1;
}
return scale;
}
bool SurfaceSdlGraphicsManager::setGraphicsMode(int mode, uint flags) { // ResidualVM
Common::StackLock lock(_graphicsMutex);
assert(_transactionMode == kTransactionActive);
if (_oldVideoMode.setup && _oldVideoMode.mode == mode)
return true;
int newScaleFactor = getGraphicsModeScale(mode);
if (newScaleFactor == -1) {
warning("unknown gfx mode %d", mode);
return false;
}
if (_oldVideoMode.setup && _oldVideoMode.scaleFactor != newScaleFactor)
_transactionDetails.needHotswap = true;
_transactionDetails.needUpdatescreen = true;
_videoMode.mode = mode;
_videoMode.scaleFactor = newScaleFactor;
return true;
}
ScalerProc *SurfaceSdlGraphicsManager::getGraphicsScalerProc(int mode) const {
ScalerProc *newScalerProc = 0;
switch (_videoMode.mode) {
case GFX_NORMAL:
newScalerProc = Normal1x;
break;
#ifdef USE_SCALERS
case GFX_DOUBLESIZE:
newScalerProc = Normal2x;
break;
case GFX_TRIPLESIZE:
newScalerProc = Normal3x;
break;
case GFX_2XSAI:
newScalerProc = _2xSaI;
break;
case GFX_SUPER2XSAI:
newScalerProc = Super2xSaI;
break;
case GFX_SUPEREAGLE:
newScalerProc = SuperEagle;
break;
case GFX_ADVMAME2X:
newScalerProc = AdvMame2x;
break;
case GFX_ADVMAME3X:
newScalerProc = AdvMame3x;
break;
#ifdef USE_HQ_SCALERS
case GFX_HQ2X:
newScalerProc = HQ2x;
break;
case GFX_HQ3X:
newScalerProc = HQ3x;
break;
#endif
case GFX_TV2X:
newScalerProc = TV2x;
break;
case GFX_DOTMATRIX:
newScalerProc = DotMatrix;
break;
#endif // USE_SCALERS
default:
break;
}
return newScalerProc;
}
void SurfaceSdlGraphicsManager::setGraphicsModeIntern() {
Common::StackLock lock(_graphicsMutex);
ScalerProc *newScalerProc = getGraphicsScalerProc(_videoMode.mode);
if (!newScalerProc) {
error("Unknown gfx mode %d", _videoMode.mode);
}
_scalerProc = newScalerProc;
if (_videoMode.mode != GFX_NORMAL) {
for (int i = 0; i < ARRAYSIZE(s_gfxModeSwitchTable); i++) {
if (s_gfxModeSwitchTable[i][1] == _videoMode.mode || s_gfxModeSwitchTable[i][2] == _videoMode.mode) {
_scalerType = i;
break;
}
}
}
if (!_screen || !_hwScreen)
return;
// Blit everything to the screen
_forceRedraw = true;
// Even if the old and new scale factors are the same, we may have a
// different scaler for the cursor now.
blitCursor();
}
int SurfaceSdlGraphicsManager::getGraphicsMode() const {
assert(_transactionMode == kTransactionNone);
return _videoMode.mode;
}
#if SDL_VERSION_ATLEAST(2, 0, 0)
const OSystem::GraphicsMode *SurfaceSdlGraphicsManager::getSupportedStretchModes() const {
return s_supportedStretchModes;
}
int SurfaceSdlGraphicsManager::getDefaultStretchMode() const {
return STRETCH_FIT;
}
bool SurfaceSdlGraphicsManager::setStretchMode(int mode) {
Common::StackLock lock(_graphicsMutex);
assert(_transactionMode == kTransactionActive);
if (_oldVideoMode.setup && _oldVideoMode.stretchMode == mode)
return true;
// Check this is a valid mode
const OSystem::GraphicsMode *sm = s_supportedStretchModes;
bool found = false;
while (sm->name) {
if (sm->id == mode) {
found = true;
break;
}
sm++;
}
if (!found) {
warning("unknown stretch mode %d", mode);
return false;
}
_transactionDetails.needUpdatescreen = true;
_transactionDetails.needDisplayResize = true;
_videoMode.stretchMode = mode;
return true;
}
int SurfaceSdlGraphicsManager::getStretchMode() const {
return _videoMode.stretchMode;
}
#endif
void SurfaceSdlGraphicsManager::initSize(uint w, uint h, const Graphics::PixelFormat *format) {
assert(_transactionMode == kTransactionActive);
_gameScreenShakeXOffset = 0;
_gameScreenShakeYOffset = 0;
#ifdef USE_RGB_COLOR
//avoid redundant format changes
Graphics::PixelFormat newFormat;
if (!format)
newFormat = Graphics::PixelFormat::createFormatCLUT8();
else
newFormat = *format;
assert(newFormat.bytesPerPixel > 0);
if (newFormat != _videoMode.format) {
_videoMode.format = newFormat;
_transactionDetails.formatChanged = true;
_screenFormat = newFormat;
}
#endif
#if !SDL_VERSION_ATLEAST(2, 0, 0)
// Avoid redundant res changes, only in SDL1. In SDL2, redundancies may not
// actually be redundant if ScummVM is switching between game engines and
// the screen dimensions are being reinitialized, since window resizing is
// supposed to reset when this happens
if ((int)w == _videoMode.screenWidth && (int)h == _videoMode.screenHeight)
return;
#endif
if ((int)w != _videoMode.screenWidth || (int)h != _videoMode.screenHeight) {
const bool useDefault = defaultGraphicsModeConfig();
if (useDefault && w > 320) {
resetGraphicsScale();
} else {
setGraphicsMode(getGraphicsModeIdByName(ConfMan.get("gfx_mode")));
}
}
_videoMode.screenWidth = w;
_videoMode.screenHeight = h;
_transactionDetails.sizeChanged = true;
}
static void fixupResolutionForAspectRatio(AspectRatio desiredAspectRatio, int &width, int &height) {
assert(&width != &height);
if (desiredAspectRatio.isAuto())
return;
int kw = desiredAspectRatio.kw();
int kh = desiredAspectRatio.kh();
const int w = width;
const int h = height;
int bestW = 0, bestH = 0;
uint bestMetric = (uint)-1; // Metric is wasted space
#if SDL_VERSION_ATLEAST(2, 0, 0)
const int numModes = SDL_GetNumDisplayModes(0);
SDL_DisplayMode modeData, *mode = &modeData;
for (int i = 0; i < numModes; ++i) {
if (SDL_GetDisplayMode(0, i, &modeData)) {
continue;
}
#else
SDL_Rect const* const*availableModes = SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_SWSURFACE); //TODO : Maybe specify a pixel format
assert(availableModes);
while (const SDL_Rect *mode = *availableModes++) {
#endif
if (mode->w < w)
continue;
if (mode->h < h)
continue;
if (mode->h * kw != mode->w * kh)
continue;
uint metric = mode->w * mode->h - w * h;
if (metric > bestMetric)
continue;
bestMetric = metric;
bestW = mode->w;
bestH = mode->h;
// Make editors a bit more happy by having the same amount of closing as
// opening curley braces.
#if SDL_VERSION_ATLEAST(2, 0, 0)
}
#else
}
#endif
if (!bestW || !bestH) {
warning("Unable to enforce the desired aspect ratio");
return;
}
width = bestW;
height = bestH;
}
void SurfaceSdlGraphicsManager::setupHardwareSize() {
_videoMode.overlayWidth = _videoMode.screenWidth * _videoMode.scaleFactor;
_videoMode.overlayHeight = _videoMode.screenHeight * _videoMode.scaleFactor;
if (_videoMode.screenHeight != 200 && _videoMode.screenHeight != 400)
_videoMode.aspectRatioCorrection = false;
_videoMode.hardwareWidth = _videoMode.screenWidth * _videoMode.scaleFactor;
_videoMode.hardwareHeight = _videoMode.screenHeight * _videoMode.scaleFactor;
if (_videoMode.aspectRatioCorrection) {
_videoMode.overlayHeight = real2Aspect(_videoMode.overlayHeight);
_videoMode.hardwareHeight = real2Aspect(_videoMode.hardwareHeight);
}
}
bool SurfaceSdlGraphicsManager::loadGFXMode() {
_forceRedraw = true;
setupHardwareSize();
//
// Create the surface that contains the 8 bit game data
//
const Graphics::PixelFormat &format = _screenFormat;
const Uint32 rMask = ((0xFF >> format.rLoss) << format.rShift);
const Uint32 gMask = ((0xFF >> format.gLoss) << format.gShift);
const Uint32 bMask = ((0xFF >> format.bLoss) << format.bShift);
const Uint32 aMask = ((0xFF >> format.aLoss) << format.aShift);
_screen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.screenWidth, _videoMode.screenHeight,
_screenFormat.bytesPerPixel * 8, rMask, gMask, bMask, aMask);
if (_screen == NULL)
error("allocating _screen failed");
#ifdef USE_RGB_COLOR
// Avoid having SDL_SRCALPHA set even if we supplied an alpha-channel in the format.
SDL_SetAlpha(_screen, 0, 255);
#endif
// SDL 1.2 palettes default to all black,
// SDL 1.3 palettes default to all white,
// Thus set our own default palette to all black.
// SDL_SetColors does nothing for non indexed surfaces.
SDL_SetColors(_screen, _currentPalette, 0, 256);
//
// Create the surface that contains the scaled graphics in 16 bit mode
//
if (_videoMode.fullscreen) {
fixupResolutionForAspectRatio(_videoMode.desiredAspectRatio, _videoMode.hardwareWidth, _videoMode.hardwareHeight);
}
#ifdef ENABLE_EVENTRECORDER
_displayDisabled = ConfMan.getBool("disable_display");
if (_displayDisabled) {
_hwScreen = g_eventRec.getSurface(_videoMode.hardwareWidth, _videoMode.hardwareHeight);
} else
#endif
{
#if defined(WIN32) && !SDL_VERSION_ATLEAST(2, 0, 0)
// Save the original bpp to be able to restore the video mode on
// unload. See _originalBitsPerPixel documentation.
if (_originalBitsPerPixel == 0) {
const SDL_VideoInfo *videoInfo = SDL_GetVideoInfo();
_originalBitsPerPixel = videoInfo->vfmt->BitsPerPixel;
}
#endif
_hwScreen = SDL_SetVideoMode(_videoMode.hardwareWidth, _videoMode.hardwareHeight, 16,
_videoMode.fullscreen ? (SDL_FULLSCREEN|SDL_SWSURFACE) : SDL_SWSURFACE
);
}
#ifdef USE_RGB_COLOR
detectSupportedFormats();
#endif
if (_hwScreen == NULL) {
// DON'T use error(), as this tries to bring up the debug
// console, which WON'T WORK now that _hwScreen is hosed.
if (!_oldVideoMode.setup) {
warning("SDL_SetVideoMode says we can't switch to that mode (%s)", SDL_GetError());
g_system->quit();
} else {
return false;
}
}
#if !SDL_VERSION_ATLEAST(2, 0, 0)
handleResize(_videoMode.hardwareWidth, _videoMode.hardwareHeight, 90, 90);
#endif
//
// Create the surface used for the graphics in 16 bit before scaling, and also the overlay
//
// Need some extra bytes around when using 2xSaI
_tmpscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.screenWidth + 3, _videoMode.screenHeight + 3,
16,
_hwScreen->format->Rmask,
_hwScreen->format->Gmask,
_hwScreen->format->Bmask,
_hwScreen->format->Amask);
if (_tmpscreen == NULL)
error("allocating _tmpscreen failed");
_overlayscreen = SDL_CreateRGBSurface(SDL_SWSURFACE, _videoMode.overlayWidth, _videoMode.overlayHeight,
16,
_hwScreen->format->Rmask,
_hwScreen->format->Gmask,
_hwScreen->format->Bmask,