post processing, FXAA and MSAA 2x-8x

resources/EngineResources/shaders/swap_vtx.glsl

@@ -0,0 +1,8 @@
+#version 450
+
+layout(location = 0) out vec2 outTextCoord;
+
+void main() {
+    outTextCoord = vec2((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2);
+    gl_Position = vec4(outTextCoord.x * 2.0f - 1.0f, outTextCoord.y * -2.0f + 1.0f,0.0f,1.0f);
+}