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++ float getDepthValue( vec4 depth_texture_sample, vec2 cameraProperties )
++ {
++ float zNear = cameraProperties.x;
++ float zFar = cameraProperties.y;
++ float zRange = zFar - zNear;
++ float z_b = depth_texture_sample.x;
++ float z_n = 2.0 * z_b - 1.0;
++ float z_e = 2.0 * zNear * zFar / (zFar + zNear - z_n * (zRange));
++ return 1.0 - ((z_e - cameraProperties.x) / (zRange));
++ }
++
++ float depthValueToLinearDistance( float depth_value, vec2 cameraProperties )
++ {
++ float FarClipDistance = cameraProperties.y;
++ float NearClipDistance = cameraProperties.x;
++ float DepthRange = FarClipDistance - NearClipDistance;
++ float linearDepth = NearClipDistance + (DepthRange * (1.0 - depth_value));
++ return linearDepth;
++ }
++
++ void MAIN()
++ {
++ vec4 depthSample = texture(DEPTH_TEXTURE, INPUT_UV);
++ float depthVal = getDepthValue(depthSample, CAMERA_PROPERTIES);
++ float rawDepth = depthValueToLinearDistance(depthVal, CAMERA_PROPERTIES);
++
++ float depthScale = abs(CAMERA_PROPERTIES.y - CAMERA_PROPERTIES.x);
++ float depthDisp = abs(rawDepth - focusDepth) / depthScale;
++ float finalDisperse = aberrationAmount * depthDisp;
++ float effectAmt = texture(maskTexture, TEXTURE_UV).x;
++
++ FRAGCOLOR = texture(INPUT, INPUT_UV);
++
++ vec2 dispDir = normalize(INPUT_UV.xy - vec2(0.5)) / (2.0 * INPUT_SIZE);
++ vec3 mixColor;
++ mixColor = FRAGCOLOR.rgb;
++ mixColor.r = texture(INPUT, INPUT_UV + dispDir * finalDisperse).r;
++ mixColor.b = texture(INPUT, INPUT_UV - dispDir * finalDisperse).b;
++
++ FRAGCOLOR.rgb = mix(FRAGCOLOR.rgb, mixColor, effectAmt);
++ }