diff --git a/CMakeLists.txt b/CMakeLists.txt
index f4e0f14..c6eb633 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.25)
 
-set(BLT_GRAPHICS_VERSION 0.13.9)
+set(BLT_GRAPHICS_VERSION 0.13.10)
 set(BLT_GRAPHICS_TEST_VERSION 0.0.1)
 
 project(BLT_WITH_GRAPHICS VERSION ${BLT_GRAPHICS_VERSION})
diff --git a/include/blt/gfx/renderer/shaders/pp_screen.frag b/include/blt/gfx/renderer/shaders/pp_screen.frag
index b87b9a0..c38f344 100644
--- a/include/blt/gfx/renderer/shaders/pp_screen.frag
+++ b/include/blt/gfx/renderer/shaders/pp_screen.frag
@@ -4,16 +4,12 @@ const std::string shader_pp_screen_frag = R"("
 #version 300 es
 precision mediump float;
 
-${LAYOUT_STRING} out vec4 FragColor;
+${LAYOUT_STRING}out vec4 FragColor;
 in vec2 uv;
 in vec2 pos;
 
 uniform sampler2D tex;
 
-vec4 linear_iter(vec4 i, vec4 p, float factor){
-    return (i + p) * factor;
-}
-
 void main() {
     FragColor = texture(tex, uv);
 }
diff --git a/libraries/BLT b/libraries/BLT
index 943fb84..fa5083b 160000
--- a/libraries/BLT
+++ b/libraries/BLT
@@ -1 +1 @@
-Subproject commit 943fb842117cd698f75ffd7d13815622e4a6e128
+Subproject commit fa5083b637a96af5b430c9f0015ee11d5638d201