Make bloom work together with render target used for the rift shader, ref #43

--HG--
branch : multipass-stereo

code/nel/include/nel/3d/bloom_effect.h

@@ -138,6 +138,8 @@ private:
 	NLMISC::CSmartPtr<NL3D::ITexture>  _BlurFinalTex;
 	// used as render target in first blur pass, and as displayed texture on second blur pass.
 	NLMISC::CSmartPtr<NL3D::ITexture>  _BlurHorizontalTex;
+	// original render target
+	NLMISC::CSmartPtr<NL3D::ITexture>  _OriginalRenderTarget;
 
 
 	// materials

code/nel/include/nel/3d/stereo_display.h

@@ -121,9 +121,9 @@ public:
 	/// 2D Interface
 	virtual bool wantInterface2D() = 0;
 
-	/// Returns non-NULL if a new render target was set
-	virtual UTexture *beginRenderTarget(bool set) = 0;
-	/// Returns true if a render target was fully drawn
+	/// Returns true if a new render target was set, always fase if not using render targets
+	virtual bool beginRenderTarget() = 0;
+	/// Returns true if a render target was fully drawn, always false if not using render targets
 	virtual bool endRenderTarget() = 0;
 	
 	static const char *getLibraryName(CStereoDeviceInfo::TStereoDeviceLibrary library);

code/nel/include/nel/3d/stereo_ovr.h

@@ -109,8 +109,8 @@ public:
 	/// 2D Interface
 	virtual bool wantInterface2D();
 
-	/// Returns non-NULL if a new render target was set, always NULL if not using render targets
-	virtual UTexture *beginRenderTarget(bool set);
+	/// Returns true if a new render target was set, always fase if not using render targets
+	virtual bool beginRenderTarget();
 	/// Returns true if a render target was fully drawn, always false if not using render targets
 	virtual bool endRenderTarget();
 

code/nel/src/3d/bloom_effect.cpp

@@ -285,6 +285,8 @@ void CBloomEffect::initBloom() // clientcfg
 	if(!_Init)
 		init();
 
+	_OriginalRenderTarget = static_cast<CDriverUser *>(_Driver)->getDriver()->getRenderTarget();
+
 	// if window resize, reinitialize textures
 	if(_WndWidth!=_Driver->getWindowWidth() || _WndHeight!=_Driver->getWindowHeight())
 	{
@@ -349,11 +351,14 @@ void CBloomEffect::initBloom() // clientcfg
 		}
 	}
 
-	NL3D::CTextureUser txt = (_InitBloomEffect) ? (CTextureUser(_InitText)) : (CTextureUser());
-	if(!((CDriverUser *) _Driver)->setRenderTarget(txt, 0, 0, _WndWidth, _WndHeight))
+	if (!_OriginalRenderTarget)
 	{
-		nlwarning("setRenderTarget return false with initial texture for bloom effect\n");
-		return;
+		NL3D::CTextureUser txt = (_InitBloomEffect) ? (CTextureUser(_InitText)) : (CTextureUser());
+		if(!(static_cast<CDriverUser *>(_Driver)->setRenderTarget(txt, 0, 0, _WndWidth, _WndHeight)))
+		{
+			nlwarning("setRenderTarget return false with initial texture for bloom effect\n");
+			return;
+		}
 	}
 }
 
@@ -370,7 +375,7 @@ void CBloomEffect::endBloom() // clientcfg
 	if(_Driver->getWindowWidth()==0 || _Driver->getWindowHeight()==0)
 		return;
 
-	CTextureUser txt1 = (_InitBloomEffect) ? (CTextureUser(_InitText)) : (CTextureUser());
+	CTextureUser txt1 = _OriginalRenderTarget ? CTextureUser(_OriginalRenderTarget) : ((_InitBloomEffect) ? (CTextureUser(_InitText)) : (CTextureUser()));
 	CTextureUser txt2(_BlurFinalTex);
 	CRect rect1(0, 0, _WndWidth, _WndHeight);
 	CRect rect2(0, 0, _BlurWidth, _BlurHeight);
@@ -394,15 +399,30 @@ void CBloomEffect::applyBlur()
 {
 	NL3D::IDriver *drvInternal = ((CDriverUser *) _Driver)->getDriver();
 
+	/*if (_OriginalRenderTarget)
+	{
+		CTextureUser txt(_OriginalRenderTarget);
+		if(!(static_cast<CDriverUser *>(_Driver)->setRenderTarget(txt, 0, 0, _WndWidth, _WndHeight)))
+		{
+			nlwarning("setRenderTarget return false with original render target for bloom effect\n");
+			return;
+		}
+	}
 	// in opengl, display in init texture
-	if(_InitBloomEffect)
+	else if(_InitBloomEffect)
 	{
 		CTextureUser txt(_InitText);
-		if(!((CDriverUser *) _Driver)->setRenderTarget(txt, 0, 0, _WndWidth, _WndHeight))
+		if(!(static_cast<CDriverUser *>(_Driver)->setRenderTarget(txt, 0, 0, _WndWidth, _WndHeight)))
 		{
 			nlwarning("setRenderTarget return false with initial texture for bloom effect\n");
 			return;
 		}
+	}*/
+	CTextureUser txtApply = _OriginalRenderTarget ? CTextureUser(_OriginalRenderTarget) : ((_InitBloomEffect) ? (CTextureUser(_InitText)) : (CTextureUser()));
+	if(!(static_cast<CDriverUser *>(_Driver)->setRenderTarget(txtApply, 0, 0, _WndWidth, _WndHeight)))
+	{
+		nlwarning("setRenderTarget return false with initial texture for bloom effect\n");
+		return;
 	}
 
 	// display blur texture
@@ -459,7 +479,7 @@ void CBloomEffect::endInterfacesDisplayBloom() // clientcfg
 {
 	// Render from render target to screen if necessary.
 	// Don't do this when the blend was done to the screen or when rendering to a user provided rendertarget.
-	if (_InitBloomEffect)
+	if ((_OriginalRenderTarget.getPtr() == NULL) && _InitBloomEffect)
 	{
 		if(!_Driver->supportBloomEffect() || !_Init)
 			return;
@@ -492,6 +512,8 @@ void CBloomEffect::endInterfacesDisplayBloom() // clientcfg
 		_Driver->drawQuad(_DisplayQuad, _DisplayInitMat);
 		_Driver->setMatrixMode3D(pCam);
 	}
+
+	_OriginalRenderTarget = NULL;
 }
 
 

code/nel/src/3d/stereo_ovr.cpp

@@ -488,19 +488,16 @@ bool CStereoOVR::wantInterface2D()
 
 
 /// Returns non-NULL if a new render target was set
-UTexture *CStereoOVR::beginRenderTarget(bool set)
+bool CStereoOVR::beginRenderTarget()
 {
 	// render target always set before driver clear
 	// nlassert(m_SubStage <= 1);
 	if (m_Driver && m_Stage == 1)
 	{
-		if (set)
-		{
-			(static_cast<CDriverUser *>(m_Driver))->setRenderTarget(*m_BarrelTexU, 0, 0, 0, 0);
-		}
-		return m_BarrelTexU;
+		static_cast<CDriverUser *>(m_Driver)->setRenderTarget(*m_BarrelTexU, 0, 0, 0, 0);
+		return true;
 	}
-	return NULL;
+	return false;
 }
 
 /// Returns true if a render target was fully drawn

code/snowballs2/client/src/snowballs_client.cpp

@@ -754,15 +754,19 @@ void loopIngame()
 					StereoDisplay->getCurrentFrustum(0, &SkyCamera);
 					StereoDisplay->getCurrentMatrix(0, &Camera);
 				}
+
+				if (StereoDisplay)
+				{
+					StereoDisplay->beginRenderTarget();
+				}
 				
 				if (!StereoDisplay || StereoDisplay->wantClear())
 				{
-					NL3D::UTexture *rt = StereoDisplay ? StereoDisplay->beginRenderTarget(!s_EnableBloom) : NULL;
 
 					if (s_EnableBloom)
 					{
 						nlassert(bloomStage == 0);
-						CBloomEffect::instance().initBloom(/*rt*/); // start bloom effect (just before the first scene element render)
+						CBloomEffect::instance().initBloom(); // start bloom effect (just before the first scene element render)
 						bloomStage = 1;
 					}