adding clip alpha (binary alpha) to the 3D view and game engine.

2 files changed, 17 insertions, 3 deletions

diff --git a/source/gameengine/GamePlayer/common/GPC_PolygonMaterial.cpp b/source/gameengine/GamePlayer/common/GPC_PolygonMaterial.cpp
index 46fe24d8b87..09dd14172c8 100644
--- a/source/gameengine/GamePlayer/common/GPC_PolygonMaterial.cpp
+++ b/source/gameengine/GamePlayer/common/GPC_PolygonMaterial.cpp
@@ -154,16 +154,23 @@ int set_tpage(MTFace *tface)
 		fAlphamode= tface->transp;
 
 		if(fAlphamode) {
-			glEnable(GL_BLEND);
-			
 			if(fAlphamode==TF_ADD) {
+				glEnable(GL_BLEND);
 				glBlendFunc(GL_ONE, GL_ONE);
+				glDisable ( GL_ALPHA_TEST );
 			/* 	glBlendEquationEXT(GL_FUNC_ADD_EXT); */
 			}
 			else if(fAlphamode==TF_ALPHA) {
+				glEnable(GL_BLEND);
 				glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+				glDisable ( GL_ALPHA_TEST );
 			/* 	glBlendEquationEXT(GL_FUNC_ADD_EXT); */
 			}
+			else if (alphamode==TF_CLIP){		
+				glDisable(GL_BLEND); 
+				glEnable ( GL_ALPHA_TEST );
+				glAlphaFunc(GL_GREATER, 0.5f);
+			}
 			/* else { */
 			/* 	glBlendFunc(GL_ONE, GL_ONE); */
 			/* 	glBlendEquationEXT(GL_FUNC_REVERSE_SUBTRACT_EXT); */
diff --git a/source/gameengine/Ketsji/KX_BlenderMaterial.cpp b/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
index 44727588106..5efe1ad26ca 100644
--- a/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
+++ b/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
@@ -478,16 +478,23 @@ bool KX_BlenderMaterial::setDefaultBlending()
 	if( mMaterial->transp &TF_ADD) {
 		glEnable(GL_BLEND);
 		glBlendFunc(GL_ONE, GL_ONE);
+		glDisable ( GL_ALPHA_TEST );
 		return true;
 	}
 	
 	if( mMaterial->transp & TF_ALPHA ) {
 		glEnable(GL_BLEND);
 		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+		glDisable ( GL_ALPHA_TEST );
 		return true;
 	}
 	
-	glDisable(GL_BLEND);
+	if( mMaterial->transp & TF_CLIP ) {
+		glDisable(GL_BLEND); 
+		glEnable ( GL_ALPHA_TEST );
+		glAlphaFunc(GL_GREATER, 0.5f);
+		return true;
+	}
 	return false;
 }