Added a check method to query the device reset event for D3D drivers. Since in...

Added a check method to query the device reset event for D3D drivers. Since in the case of a reset the content of all RTTs are lost, it's required to become aware of this fact.
The current solution is just a simply check which works with lots about the drivers. A cleaner solution would return all structures which have to be regenerated. A new enum is already created for this reason, but not yet implemented. However, the interface of the new checkDriverReset method might change in the near future...

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@1630 dfc29bdd-3216-0410-991c-e03cc46cb475

include/IVideoDriver.h

@@ -65,6 +65,17 @@ namespace video
 		ETS_COUNT
 	};
 
+	enum E_LOST_RESSOURCE
+	{
+		//! The whole device/driver is lost
+		ELR_DEVICE = 1,
+		//! All texture are lost, rare problem
+		ELR_TEXTURES = 2,
+		//! The Render Target Textures are lost, typical problem for D3D
+		ELR_RTTS = 4,
+		//! The HW buffers are lost, will be recreated automatically, but might require some more time this frame
+		ELR_HW_BUFFERS = 8
+	};
 
 	//! Interface to driver which is able to perform 2d and 3d graphics functions.
 	/** This interface is one of the most important interfaces of
@@ -122,6 +133,12 @@ namespace video
 		\param flag When true the feature is disabled, otherwise it is enabled. */
 		virtual void disableFeature(E_VIDEO_DRIVER_FEATURE feature, bool flag=true) =0;
 
+		//! Check if the driver was recently reset.
+		/** For d3d devices you will need to recreate the RTTs if the
+		driver was reset. Should be queried right after beginScene().
+		*/
+		virtual bool checkDriverReset() =0;
+
 		//! Sets transformation matrices.
 		/** \param state Transformation type to be set, e.g. view,
 		world, or projection.

source/Irrlicht/CD3D8Driver.cpp

@@ -33,7 +33,8 @@ CD3D8Driver::CD3D8Driver(const core::dimension2d<s32>& screenSize, HWND window,
 	D3DLibrary(0), pID3D(0), pID3DDevice(0), PrevRenderTarget(0),
 	WindowId(0), SceneSourceRect(0),
 	LastVertexType((video::E_VERTEX_TYPE)-1), MaxTextureUnits(0), MaxUserClipPlanes(0),
-	MaxLightDistance(sqrtf(FLT_MAX)), LastSetLight(-1), DeviceLost(false)
+	MaxLightDistance(sqrtf(FLT_MAX)), LastSetLight(-1), DeviceLost(false),
+	DriverWasReset(true)
 {
 	#ifdef _DEBUG
 	setDebugName("CD3D8Driver");
@@ -441,6 +442,7 @@ bool CD3D8Driver::beginScene(bool backBuffer, bool zBuffer, SColor color,
 bool CD3D8Driver::endScene()
 {
 	CNullDriver::endScene();
+	DriverWasReset=false;
 
 	HRESULT hr = pID3DDevice->EndScene();
 	if (FAILED(hr))
@@ -491,6 +493,7 @@ bool CD3D8Driver::reset()
 				tex->Release();
 		}
 	}
+	DriverWasReset=true;
 
 	HRESULT hr = pID3DDevice->Reset(&present);
 

source/Irrlicht/CD3D8Driver.h

@@ -202,6 +202,7 @@ namespace video
 		//! \param enable: If true, enable the clipping plane else disable it.
 		virtual void enableClipPlane(u32 index, bool enable);
 
+		virtual bool checkDriverReset() {return DriverWasReset;}
 	private:
 
 		// enumeration for rendering modes such as 2d and 3d for minizing the switching of renderStates.
@@ -293,6 +294,7 @@ namespace video
 		f32 MaxLightDistance;
 		s32 LastSetLight;
 		bool DeviceLost;
+		bool DriverWasReset;
 
 		SColorf AmbientLight;
 	};

source/Irrlicht/CD3D9Driver.cpp

@@ -33,7 +33,7 @@ CD3D9Driver::CD3D9Driver(const core::dimension2d<s32>& screenSize, HWND window,
 	WindowId(0), SceneSourceRect(0),
 	LastVertexType((video::E_VERTEX_TYPE)-1), MaxTextureUnits(0), MaxUserClipPlanes(0),
 	MaxLightDistance(sqrtf(FLT_MAX)), LastSetLight(-1), DeviceLost(false),
-	Fullscreen(fullscreen)
+	Fullscreen(fullscreen), DriverWasReset(true)
 {
 	#ifdef _DEBUG
 	setDebugName("CD3D9Driver");
@@ -510,6 +510,7 @@ bool CD3D9Driver::beginScene(bool backBuffer, bool zBuffer, SColor color,
 bool CD3D9Driver::endScene()
 {
 	CNullDriver::endScene();
+	DriverWasReset=false;
 
 	HRESULT hr = pID3DDevice->EndScene();
 	if (FAILED(hr))
@@ -2267,6 +2268,7 @@ bool CD3D9Driver::reset()
 				tex->Release();
 		}
 	}
+	DriverWasReset=true;
 
 	HRESULT hr = pID3DDevice->Reset(&present);
 

source/Irrlicht/CD3D9Driver.h

@@ -223,8 +223,10 @@ namespace video
 		virtual void enableClipPlane(u32 index, bool enable);
 
 		//! Returns the graphics card vendor name.
-		virtual core::stringc getVendorInfo() {return vendorName;};
+		virtual core::stringc getVendorInfo() {return vendorName;}
 
+		//! Check if the driver was recently reset.
+		virtual bool checkDriverReset() {return DriverWasReset;}
 	private:
 
 		// enumeration for rendering modes such as 2d and 3d for minizing the switching of renderStates.
@@ -330,6 +332,7 @@ namespace video
 		s32 LastSetLight;
 		bool DeviceLost;
 		bool Fullscreen;
+		bool DriverWasReset;
 
 		SColorf AmbientLight;
 

source/Irrlicht/CNullDriver.h

@@ -502,7 +502,7 @@ namespace video
 		virtual void enableClipPlane(u32 index, bool enable);
 
 		//! Returns the graphics card vendor name.
-		virtual core::stringc getVendorInfo() {return "Not available on this driver.";};
+		virtual core::stringc getVendorInfo() {return "Not available on this driver.";}
 
 		//! Only used by the engine internally.
 		virtual void setAllowZWriteOnTransparent(bool flag)
@@ -512,6 +512,7 @@ namespace video
 		virtual ITexture* createRenderTargetTexture(const core::dimension2d<s32>& size,
 				const c8* name=0);
 
+		virtual bool checkDriverReset() {return false;}
 	protected:
 
 		//! deletes all textures