Bind some fixed texture arrays only once

shader/texture/bloomBlur.frag

@@ -5,7 +5,7 @@ const vec2 winSize = vec2 (300.0,300.0);
 // note that the above opening bracket should be the first in this file
 // this is so that the window size can be extracted and the shader recompiled on
 // the fly
-uniform sampler2D screenTexture;
+layout (binding = 0) uniform sampler2D screenTexture;
 const float hOff = 3 / winSize.x;
 const float vOff = 3 / winSize.y;
 //const vec2 off[9] = vec2[]