diff --git a/src/matfx.cpp b/src/matfx.cpp
index 0add6c7..457106f 100644
--- a/src/matfx.cpp
+++ b/src/matfx.cpp
@@ -225,6 +225,14 @@ MatFX::setEnvCoefficient(float32 coef)
 		this->fx[i].env.coefficient = coef;
 }
 
+void
+MatFX::setEnvFBAlpha(bool32 useFBAlpha)
+{
+	int32 i = this->getEffectIndex(ENVMAP);
+	if(i >= 0)
+		this->fx[i].env.fbAlpha = useFBAlpha;
+}
+
 Texture*
 MatFX::getEnvTexture(void)
 {
@@ -252,6 +260,15 @@ MatFX::getEnvCoefficient(void)
 	return 0.0f;
 }
 
+bool32
+MatFX::getEnvFBAlpha(void)
+{
+	int32 i = this->getEffectIndex(ENVMAP);
+	if(i >= 0)
+		return this->fx[i].env.fbAlpha;
+	return 0;
+}
+
 
 void
 MatFX::setDualTexture(Texture *t)
diff --git a/src/rwplugins.h b/src/rwplugins.h
index 26091d1..defc3be 100644
--- a/src/rwplugins.h
+++ b/src/rwplugins.h
@@ -140,9 +140,11 @@ struct MatFX
 	void setEnvTexture(Texture *t);
 	void setEnvFrame(Frame *f);
 	void setEnvCoefficient(float32 coef);
+	void setEnvFBAlpha(bool32 useFBAlpha);
 	Texture *getEnvTexture(void);
 	Frame *getEnvFrame(void);
 	float32 getEnvCoefficient(void);
+	bool32 getEnvFBAlpha(void);
 	// Dual
 	void setDualTexture(Texture *t);
 	void setDualSrcBlend(int32 blend);