diff --git a/src/main/kotlin/gln/framebuffer/block.kt b/src/main/kotlin/gln/framebuffer/block.kt
index cf3292f..77bdd16 100644
--- a/src/main/kotlin/gln/framebuffer/block.kt
+++ b/src/main/kotlin/gln/framebuffer/block.kt
@@ -36,15 +36,15 @@ inline fun withFramebuffer(framebuffer: Int, block: Framebuffer.() -> Unit) {
     Framebuffer.block()
 }
 
-// TODO check if leave
-inline fun withFramebuffer(block: Framebuffer.() -> Unit) {
-    Framebuffer.name = 0
-    Framebuffer.block()
-}
+// TODO check if leave, backup current fbo?
+//inline fun withDefaultFramebuffer(block: Framebuffer.() -> Unit) {
+//    Framebuffer.name = 0
+//    Framebuffer.block()
+//}
 
 object Framebuffer {
 
-    var name = 0
+    var name = defaultFramebuffer
         set(value) {
             GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, value)
             field = value
@@ -100,5 +100,4 @@ object Framebuffers {
         Framebuffer.name = names[index] // bind
         Framebuffer.block()
     }
-
 }
\ No newline at end of file
diff --git a/src/main/kotlin/gln/framebuffer/framebuffer.kt b/src/main/kotlin/gln/framebuffer/framebuffer.kt
index 6749008..a0a44bb 100644
--- a/src/main/kotlin/gln/framebuffer/framebuffer.kt
+++ b/src/main/kotlin/gln/framebuffer/framebuffer.kt
@@ -15,6 +15,7 @@ import kotlin.properties.Delegates
 
 var framebufferName: IntBuffer by Delegates.notNull()
 
+val defaultFramebuffer = 0
 
 inline fun glFramebufferRenderbuffer(target: Int, attachment: Int, renderbuffertarget: Int, renderbuffer: Enum<*>) = GL30.glFramebufferRenderbuffer(target, attachment, renderbuffertarget, renderbufferName[renderbuffer])
 inline fun glFramebufferRenderbuffer(target: Int, attachment: Int, renderbuffertarget: Int, renderbuffer: IntBuffer) = GL30.glFramebufferRenderbuffer(target, attachment, renderbuffertarget, renderbuffer[0])
@@ -25,7 +26,7 @@ inline fun glBindFramebuffer(target: Int, framebuffer: IntBuffer) = GL30.glBindF
 inline fun glBindFramebuffer(framebuffer: Enum<*>) = GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, framebufferName[framebuffer])
 inline fun glBindFramebuffer(framebuffer: IntBuffer) = GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, framebuffer[0])
 inline fun glBindFramebuffer(framebuffer: Int) = GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, framebuffer)
-inline fun glBindFramebuffer() = GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0)
+inline fun glBindFramebuffer() = GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, defaultFramebuffer)
 
 
 //inline fun glFramebufferTexture2D(target: Int, attachment: Int, textarget: Int, texture: Int) = GL30.glFramebufferTexture2D(target, attachment, textarget, texture, 0) TODO renable without target