Fix a render target issue, see #43

--HG--
branch : multipass-stereo

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

@@ -859,6 +859,8 @@ public:
 													uint32 cubeFace = 0
 													) = 0 ;
 
+	virtual ITexture		*getRenderTarget() const = 0;
+
 	/** Trick method : copy the current texture target into another texture without updating the current texture.
 	  *
 	  * This method copies the current texture into another texture.

code/nel/src/3d/driver/direct3d/driver_direct3d.h

@@ -855,6 +855,7 @@ public:
 	// todo hulud d3d buffers
 	virtual void			getZBufferPart (std::vector<float>  &zbuffer, NLMISC::CRect &rect);
 	virtual bool			setRenderTarget (ITexture *tex, uint32 x, uint32 y, uint32 width, uint32 height, uint32 mipmapLevel, uint32 cubeFace);
+	virtual ITexture		*getRenderTarget() const;
 	virtual bool			copyTargetToTexture (ITexture *tex, uint32 offsetx, uint32 offsety, uint32 x, uint32 y, uint32 width,
 													uint32 height, uint32 mipmapLevel);
 	virtual bool			getRenderTargetSize (uint32 &width, uint32 &height);

code/nel/src/3d/driver/direct3d/driver_direct3d_texture.cpp

@@ -1187,6 +1187,11 @@ bool CDriverD3D::setRenderTarget (ITexture *tex, uint32 /* x */, uint32 /* y */,
 	return true;
 }
 
+ITexture *CDriverD3D::getRenderTarget() const
+{
+	return _RenderTarget.Texture;
+}
+
 // ***************************************************************************
 
 bool CDriverD3D::copyTargetToTexture (ITexture * /* tex */, uint32 /* offsetx */, uint32 /* offsety */, uint32 /* x */, uint32 /* y */, uint32 /* width */,

code/nel/src/3d/driver/opengl/driver_opengl.cpp

@@ -263,8 +263,6 @@ CDriverGL::CDriverGL()
 	_CurrentFogColor[2]= 0;
 	_CurrentFogColor[3]= 0;
 
-	_RenderTargetFBO = false;
-
 	_LightSetupDirty= false;
 	_ModelViewMatrixDirty= false;
 	_RenderSetupDirty= false;

code/nel/src/3d/driver/opengl/driver_opengl.h

@@ -564,6 +564,8 @@ public:
 	virtual bool			setRenderTarget (ITexture *tex, uint32 x, uint32 y, uint32 width, uint32 height,
 												uint32 mipmapLevel, uint32 cubeFace);
 
+	virtual ITexture		*getRenderTarget() const;
+
 	virtual bool			copyTargetToTexture (ITexture *tex, uint32 offsetx, uint32 offsety, uint32 x, uint32 y,
 													uint32 width, uint32 height, uint32 mipmapLevel);
 
@@ -889,7 +891,7 @@ private:
 	// viewport before call to setRenderTarget, if BFO extension is supported
 	CViewport				_OldViewport;
 
-	bool					_RenderTargetFBO;
+	CSmartPtr<ITexture>		_RenderTargetFBO;
 
 
 	// Num lights return by GL_MAX_LIGHTS

code/nel/src/3d/driver/opengl/driver_opengl_texture.cpp

@@ -2314,7 +2314,7 @@ bool CDriverGL::setRenderTarget (ITexture *tex, uint32 x, uint32 y, uint32 width
 			newVP.init(0, 0, ((float)width/(float)w), ((float)height/(float)h));
 			setupViewport(newVP);
 
-			_RenderTargetFBO = true;
+			_RenderTargetFBO = tex;
 
 			return activeFrameBufferObject(tex);
 		}
@@ -2334,7 +2334,7 @@ bool CDriverGL::setRenderTarget (ITexture *tex, uint32 x, uint32 y, uint32 width
 		setupViewport(_OldViewport);
 		_OldViewport = _CurrViewport;
 
-		_RenderTargetFBO = false;
+		_RenderTargetFBO = NULL;
 		return false;
 	}
 
@@ -2347,12 +2347,17 @@ bool CDriverGL::setRenderTarget (ITexture *tex, uint32 x, uint32 y, uint32 width
 	// Update the scissor
 	setupScissor (_CurrScissor);
 
-	_RenderTargetFBO = false;
+	_RenderTargetFBO = NULL;
 	_OldViewport = _CurrViewport;
 
 	return true;
 }
 
+ITexture *CDriverGL::getRenderTarget() const
+{
+	return _RenderTargetFBO ? _RenderTargetFBO : _TextureTarget;
+}
+
 // ***************************************************************************
 
 bool CDriverGL::copyTargetToTexture (ITexture *tex,

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

@@ -249,6 +249,7 @@ void			CShadowMapManager::renderGenerate(CScene *scene)
 	garbageShadowTextures(scene);
 
 	IDriver *driverForShadowGeneration= scene->getRenderTrav().getAuxDriver();
+	CSmartPtr<NL3D::ITexture> previousRenderTarget = driverForShadowGeneration->getRenderTarget();
 
 	// Init
 	// ********
@@ -488,7 +489,7 @@ void			CShadowMapManager::renderGenerate(CScene *scene)
 	}
 
 	// Set default render target
-	driverForShadowGeneration->setRenderTarget (NULL);
+	driverForShadowGeneration->setRenderTarget (previousRenderTarget);
 
 	// Allow Writing on all.
 	driverForShadowGeneration->setColorMask(true, true, true, true);