GE Patch by Hamed Zaghaghi - Adding Motion Blur to the Game Engine.

I reviewed the code, suggested an update ( initialising accumulation buffer ), and tested the resulting update successfully.

It's great to see more GE developers!GE Patch by Hamed Zaghaghi to add motion blur to the GE ( using the accumulation buffer ).

I reviewed code and tested, gave some feedback ( initialising accumulation buffer ) which was implemented straight away, and re-reviewed.

It's great to have another GE coder on the team!

4 files changed, 47 insertions, 3 deletions

diff --git a/source/gameengine/Rasterizer/RAS_IRasterizer.h b/source/gameengine/Rasterizer/RAS_IRasterizer.h
index 8ecc9e7ad05..560c6741260 100644
--- a/source/gameengine/Rasterizer/RAS_IRasterizer.h
+++ b/source/gameengine/Rasterizer/RAS_IRasterizer.h
@@ -48,7 +48,6 @@ class RAS_IPolyMaterial;
  */
 class RAS_IRasterizer
 {
-
 public:
 
 	RAS_IRasterizer(RAS_ICanvas* canv){};
@@ -398,7 +397,15 @@ public:
 
 	virtual bool	QueryLists(){return false;}
 	virtual bool	QueryArrays(){return false;}
+	
+	virtual void	EnableMotionBlur(float motionblurvalue)=0;
+	virtual void	DisableMotionBlur()=0;
+	
+	virtual float	GetMotionBlurValue()=0;
+	virtual int	GetMotionBlurState()=0;
+	virtual void SetMotionBlurState(int newstate)=0;
 };
 
 #endif //__RAS_IRASTERIZER
 
+
diff --git a/source/gameengine/Rasterizer/RAS_IRenderTools.h b/source/gameengine/Rasterizer/RAS_IRenderTools.h
index fa3c777553d..114783b9a47 100644
--- a/source/gameengine/Rasterizer/RAS_IRenderTools.h
+++ b/source/gameengine/Rasterizer/RAS_IRenderTools.h
@@ -174,6 +174,10 @@ public:
 		struct RAS_LightObject* lightobject
 	);
 
+	virtual
+		void
+	MotionBlur(RAS_IRasterizer* rasterizer)=0;
+
 	virtual 
 		class RAS_IPolyMaterial*	
 	CreateBlenderPolyMaterial(
@@ -195,3 +199,4 @@ public:
 
 #endif //__RAS_IRENDERTOOLS
 
+
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.cpp b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.cpp
index 53ec7a02e6f..85250fcd552 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.cpp
+++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.cpp
@@ -82,7 +82,9 @@ RAS_OpenGLRasterizer::RAS_OpenGLRasterizer(RAS_ICanvas* canvas)
 	m_setfocallength(false),
 	m_noOfScanlines(32),
 	m_useTang(false),
-	m_materialCachingInfo(0)
+	m_materialCachingInfo(0),
+	m_motionblur(0),
+	m_motionblurvalue(-1.0)
 {
 	m_viewmatrix.Identity();
 	
@@ -1979,3 +1981,15 @@ void RAS_OpenGLRasterizer::SetPolygonOffset(float mult, float add)
 	else
 		glDisable(mode);
 }
+
+void RAS_OpenGLRasterizer::EnableMotionBlur(float motionblurvalue)
+{
+	m_motionblur = 1;
+	m_motionblurvalue = motionblurvalue;
+}
+
+void RAS_OpenGLRasterizer::DisableMotionBlur()
+{
+	m_motionblur = 0;
+	m_motionblurvalue = -1.0;
+}
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.h b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.h
index d95ced658ce..6728905aa57 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.h
@@ -91,6 +91,10 @@ class RAS_OpenGLRasterizer : public RAS_IRasterizer
 	int				m_noOfScanlines;
 	bool			InterlacedStereo() const;
 
+	//motion blur
+	int	m_motionblur;
+	float	m_motionblurvalue;
+
 protected:
 	int				m_drawingmode;
 	TexCoGen		m_texco[RAS_MAX];
@@ -293,8 +297,22 @@ public:
 					const RAS_TexVert& v2,
 					const RAS_TexVert& v3,
 					const MT_Vector3 &no);
-
+	
+	virtual void	EnableMotionBlur(float motionblurvalue);
+	virtual void	DisableMotionBlur();
+	virtual float	GetMotionBlurValue(){return m_motionblurvalue;};
+	virtual int	GetMotionBlurState(){return m_motionblur;};
+	virtual void SetMotionBlurState(int newstate)
+	{
+		if(newstate<0) 
+			m_motionblur = 0;
+		else if(newstate>2)
+			m_motionblur = 2;
+		else 
+			m_motionblur = newstate;
+	};
 };
 
 #endif //__RAS_OPENGLRASTERIZER
 
+