Committing patch #25675 "Make "Cast Buffer Shadows" option work in viewport and BGE" by me.

Description from the tracker:
"It's really handy to be able to prevent an object/material from casting a shadow. So, I made use of the Cast Buffer Shadows option in the material settings, and made it work in the viewport and the BGE."

6 files changed, 16 insertions, 2 deletions

diff --git a/source/gameengine/Converter/BL_BlenderDataConversion.cpp b/source/gameengine/Converter/BL_BlenderDataConversion.cpp
index 7b9c5d4b4d6..35c319e263b 100644
--- a/source/gameengine/Converter/BL_BlenderDataConversion.cpp
+++ b/source/gameengine/Converter/BL_BlenderDataConversion.cpp
@@ -350,6 +350,8 @@ bool ConvertMaterial(
 
 		// use lighting?
 		material->ras_mode |= ( mat->mode & MA_SHLESS )?0:USE_LIGHT;
+		// cast shadows?
+		material->ras_mode |= ( mat->mode & MA_SHADBUF )?CAST_SHADOW:0;
 		MTex *mttmp = 0;
 		numchan = getNumTexChannels(mat);
 		int valid_index = 0;
diff --git a/source/gameengine/Ketsji/BL_Material.h b/source/gameengine/Ketsji/BL_Material.h
index ef25c9218a3..c0440e66501 100644
--- a/source/gameengine/Ketsji/BL_Material.h
+++ b/source/gameengine/Ketsji/BL_Material.h
@@ -157,7 +157,8 @@ enum BL_ras_mode
 	ALPHA=8,
 	// TRIANGLE=16,
 	USE_LIGHT=32,
-	WIRE=64
+	WIRE=64,
+	CAST_SHADOW=128
 };
 
 // -------------------------------------
diff --git a/source/gameengine/Ketsji/KX_BlenderMaterial.cpp b/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
index 9ff32ba57c5..4226896aec0 100644
--- a/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
+++ b/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
@@ -85,6 +85,7 @@ void KX_BlenderMaterial::Initialize(
 	m_flag |= (mMaterial->IdMode>=ONETEX)? RAS_MULTITEX: 0;
 	m_flag |= ((mMaterial->ras_mode & USE_LIGHT)!=0)? RAS_MULTILIGHT: 0;
 	m_flag |= (mMaterial->glslmat)? RAS_BLENDERGLSL: 0;
+	m_flag |= ((mMaterial->ras_mode & CAST_SHADOW)!=0)? RAS_CASTSHADOW: 0;
 
 	// figure max
 	int enabled = mMaterial->num_enabled;
diff --git a/source/gameengine/Rasterizer/RAS_IPolygonMaterial.cpp b/source/gameengine/Rasterizer/RAS_IPolygonMaterial.cpp
index 47f1dcb412a..5a1b52489b4 100644
--- a/source/gameengine/Rasterizer/RAS_IPolygonMaterial.cpp
+++ b/source/gameengine/Rasterizer/RAS_IPolygonMaterial.cpp
@@ -246,6 +246,11 @@ bool RAS_IPolyMaterial::UsesLighting(RAS_IRasterizer *rasty) const
 	return dolights;
 }
 
+bool RAS_IPolyMaterial::CastsShadows() const
+{
+	return (m_flag & RAS_CASTSHADOW) != 0;
+}
+
 bool RAS_IPolyMaterial::UsesObjectColor() const
 {
 	return !(m_flag & RAS_BLENDERGLSL);
diff --git a/source/gameengine/Rasterizer/RAS_IPolygonMaterial.h b/source/gameengine/Rasterizer/RAS_IPolygonMaterial.h
index b0e7daf81d7..2a5c6a179b6 100644
--- a/source/gameengine/Rasterizer/RAS_IPolygonMaterial.h
+++ b/source/gameengine/Rasterizer/RAS_IPolygonMaterial.h
@@ -62,7 +62,8 @@ enum MaterialProps
 	RAS_AUTOGEN		=128,
 	RAS_NORMAL		=256,
 	RAS_DEFMULTI	=512,
-	RAS_BLENDERGLSL =1024
+	RAS_BLENDERGLSL =1024,
+	RAS_CASTSHADOW	=2048
 };
 
 /**
@@ -169,6 +170,7 @@ public:
 	virtual void		GetMaterialRGBAColor(unsigned char *rgba) const;
 	virtual bool		UsesLighting(RAS_IRasterizer *rasty) const;
 	virtual bool		UsesObjectColor() const;
+	virtual bool		CastsShadows() const;
 
 	virtual void		Replace_IScene(SCA_IScene *val) {}; /* overridden by KX_BlenderMaterial */
 
diff --git a/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp b/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp
index 7647f7d3f27..85284096bb9 100644
--- a/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp
+++ b/source/gameengine/Rasterizer/RAS_MaterialBucket.cpp
@@ -586,6 +586,9 @@ bool RAS_MaterialBucket::ActivateMaterial(const MT_Transform& cameratrans, RAS_I
 	RAS_IRenderTools *rendertools)
 {
 	bool uselights;
+	
+	if(rasty->GetDrawingMode() == RAS_IRasterizer::KX_SHADOW && !m_material->CastsShadows())
+		return false;
 
 	if(!rasty->SetMaterial(*m_material))
 		return false;