libretro/scummvm
1
0
Fork 0
mirror of https://github.com/libretro/scummvm.git synced 2025-01-09 03:10:22 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

IOS7: Implement switching of 2D/3D graphics managers

Browse Source 
Implement the same "hacky" way to switch between the 2D and 3D
iOSGraphicsManagers as the Android and SDL backends.

This commit enables 3D capable games to utilise the horse powers
in the GPU to render graohic. Older iPhones and iPads (iPhone 6,
iPad Mini v1) are able to run quite advanced games without any
stuttering if run in Release mode.
This commit is contained in:
Lars Sundström 2023-06-10 15:42:20 +02:00
parent 6a74f7b32b
commit b324c70748
2 changed files with 68 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
backends/platform/ios7/ios7_osys_main.cpp
View File

@ -42,9 +42,11 @@
#include "engines/engine.h"
#include "engines/metaengine.h"
#include "graphics/cursorman.h"
#include "gui/gui-manager.h"
#include "backends/graphics/ios/ios-graphics.h"
#include "backends/graphics3d/ios/ios-graphics3d.h"
#include "backends/saves/default/default-saves.h"
#include "backends/timer/default/default-timer.h"
#include "backends/mutex/pthread/pthread-mutex.h"
@ -153,6 +155,8 @@ bool OSystem_iOS7::hasFeature(Feature f) {
case kFeatureOpenUrl:
case kFeatureNoQuit:
case kFeatureKbdMouseSpeed:
case kFeatureOpenGLForGame:
case kFeatureShadersForGame:
return true;
default:
@ -182,6 +186,65 @@ bool OSystem_iOS7::getFeatureState(Feature f) {
}
}
bool OSystem_iOS7::setGraphicsMode(int mode, uint flags) {
bool render3d = flags & OSystem::kGfxModeRender3d;
// Utilize the same way to switch between 2D and 3D graphics manager as
// in SDL based backends and Android.
iOSCommonGraphics *commonGraphics = dynamic_cast<iOSCommonGraphics *>(_graphicsManager);
iOSCommonGraphics::State gfxManagerState = commonGraphics->getState();
bool supports3D = _graphicsManager->hasFeature(kFeatureOpenGLForGame);
bool switchedManager = false;
// If the new mode and the current mode are not from the same graphics
// manager, delete and create the new mode graphics manager
if (render3d && !supports3D) {
delete _graphicsManager;
iOSGraphics3dManager *manager = new iOSGraphics3dManager();
_graphicsManager = manager;
commonGraphics = manager;
switchedManager = true;
} else if (!render3d && supports3D) {
delete _graphicsManager;
iOSGraphicsManager *manager = new iOSGraphicsManager();
_graphicsManager = manager;
commonGraphics = manager;
switchedManager = true;
}
if (switchedManager) {
// Setup the graphics mode and size first
// This is needed so that we can check the supported pixel formats when
// restoring the state.
_graphicsManager->beginGFXTransaction();
if (!_graphicsManager->setGraphicsMode(mode, flags))
return false;
_graphicsManager->initSize(gfxManagerState.screenWidth, gfxManagerState.screenHeight);
_graphicsManager->endGFXTransaction();
// This failing will probably have bad consequences...
//if (!androidGraphicsManager->setState(gfxManagerState)) {
// return false;
//}
// Next setup the cursor again
CursorMan.pushCursor(0, 0, 0, 0, 0, 0);
CursorMan.popCursor();
// Next setup cursor palette if needed
if (_graphicsManager->getFeatureState(kFeatureCursorPalette)) {
CursorMan.pushCursorPalette(0, 0, 0);
CursorMan.popCursorPalette();
}
_graphicsManager->beginGFXTransaction();
return true;
} else {
return _graphicsManager->setGraphicsMode(mode, flags);
}
}
void OSystem_iOS7::suspendLoop() {
bool done = false;
uint32 startTime = getMillis();

5
backends/platform/ios7/ios7_osys_main.h
View File

@ -97,6 +97,8 @@ public:
void setFeatureState(Feature f, bool enable) override;
bool getFeatureState(Feature f) override;
bool setGraphicsMode(int mode, uint flags) override;
bool touchpadModeEnabled() const;
uint createOpenGLContext();
@ -109,6 +111,9 @@ public:
#if defined(USE_OPENGL) && defined(USE_GLAD)
void *getOpenGLProcAddress(const char *name) const override;
#endif
#if defined(USE_OPENGL_GAME) || defined(USE_OPENGL_SHADERS)
OpenGL::ContextType getOpenGLType() const override { return OpenGL::kContextGLES2; }
#endif
public:
bool pollEvent(Common::Event &event) override;