diff --git a/Demos/OpenGL/RenderTexture.h b/Demos/OpenGL/RenderTexture.h
index f252b453b..88fdc8250 100644
--- a/Demos/OpenGL/RenderTexture.h
+++ b/Demos/OpenGL/RenderTexture.h
@@ -46,10 +46,10 @@ public:
 	inline void	addPixel(int x,int y,const btVector4& rgba)
 	{
 		unsigned char* pixel = &m_buffer[ (x+y*m_width) * 4];
-		pixel[0] = (unsigned char)btMin(255.f,((float)pixel[0] + 255.f*rgba.getX()));
-		pixel[1] = (unsigned char)btMin(255.f,((float)pixel[1] + 255.f*rgba.getY()));
-		pixel[2] = (unsigned char)btMin(255.f,((float)pixel[2] + 255.f*rgba.getZ()));
-//		pixel[3] = (unsigned char)btMin(255.f,((float)pixel[3] + 255.f*rgba.getW()));
+		pixel[0] = (unsigned char)btMin(btScalar(255.f),((btScalar)pixel[0] + btScalar(255.f)*rgba.getX()));
+		pixel[1] = (unsigned char)btMin(btScalar(255.f),((btScalar)pixel[1] + btScalar(255.f)*rgba.getY()));
+		pixel[2] = (unsigned char)btMin(btScalar(255.f),((btScalar)pixel[2] + btScalar(255.f)*rgba.getZ()));
+//		pixel[3] = (unsigned char)btMin(btScalar(255.f),((btScalar)pixel[3] + btScalar(255.f)*rgba.getW()));
 	}
 
 	inline btVector4 getPixel(int x,int y)