declare const _default: "\n    #ifdef DOF\n        uniform sampler2D cocTexture;\n        uniform sampler2D blurTexture;\n        \n        // Global variables for debug\n        vec2 dCoc;\n        vec3 dBlur;\n\n        // Samples the DOF blur and CoC textures\n        vec3 getDofBlur(vec2 uv) {\n            dCoc = texture2DLod(cocTexture, uv, 0.0).rg;\n\n            #if DOF_UPSCALE\n                vec2 blurTexelSize = 1.0 / vec2(textureSize(blurTexture, 0));\n                vec3 bilinearBlur = vec3(0.0);\n                float totalWeight = 0.0;\n\n                // 3x3 grid of neighboring texels\n                for (int i = -1; i <= 1; i++) {\n                    for (int j = -1; j <= 1; j++) {\n                        vec2 offset = vec2(i, j) * blurTexelSize;\n                        vec2 cocSample = texture2DLod(cocTexture, uv + offset, 0.0).rg;\n                        vec3 blurSample = texture2DLod(blurTexture, uv + offset, 0.0).rgb;\n\n                        // Accumulate the weighted blur sample\n                        float cocWeight = clamp(cocSample.r + cocSample.g, 0.0, 1.0);\n                        bilinearBlur += blurSample * cocWeight;\n                        totalWeight += cocWeight;\n                    }\n                }\n\n                // normalize the accumulated color\n                if (totalWeight > 0.0) {\n                    bilinearBlur /= totalWeight;\n                }\n\n                dBlur = bilinearBlur;\n                return bilinearBlur;\n            #else\n                // when blurTexture is full resolution, just sample it, no upsampling\n                dBlur = texture2DLod(blurTexture, uv, 0.0).rgb;\n                return dBlur;\n            #endif\n        }\n\n        vec3 applyDof(vec3 color, vec2 uv) {\n            vec3 blur = getDofBlur(uv);\n            return mix(color, blur, dCoc.r + dCoc.g);\n        }\n    #endif\n";
export default _default;