Partially implement a framebuffer object for bluring shadows

shader/background.vert

@@ -1,6 +1,6 @@
 #version 430 core
 layout (location = 0) in vec4 params;
-layout (location = 1) in vec2 winSizea;
+layout (location = 1) in vec2 texCoor;
 out vec4 vParams;
 out vec2 vWinSize;
 

shader/fullscreen.frag

@@ -0,0 +1,11 @@
+#version 430 core
+in vec2 vTexPos;
+out vec4 fColor;
+
+uniform sampler2D screenTexture;
+
+void main()
+{
+    fColor = texture(screenTexture, vTexPos);
+//    fColor = vec4(1,1,1,0);
+}

shader/fullscreen.vert

@@ -0,0 +1,10 @@
+#version 430 core
+layout (location = 0) in vec2 pos;
+layout (location = 1) in vec2 texPos;
+out vec2 vTexPos;
+
+void main()
+{
+  gl_Position = vec4(pos,0,1);
+  vTexPos = texPos;
+}