playcanvas/build/playcanvas/src/scene/shader-lib/wgsl/chunks/render-pass/frag/compose/compose-dof.d.ts

PlayCanvas WebGL game engine

declare const _default: "\n    #ifdef DOF\n        var cocTexture: texture_2d<f32>;\n        var cocTextureSampler: sampler;\n        var blurTexture: texture_2d<f32>;\n        var blurTextureSampler: sampler;\n        \n        // Global variables for debug\n        var<private> dCoc: vec2f;\n        var<private> dBlur: vec3f;\n\n        // Samples the DOF blur and CoC textures\n        fn getDofBlur(uv: vec2f) -> vec3f {\n            dCoc = textureSampleLevel(cocTexture, cocTextureSampler, uv, 0.0).rg;\n\n            #if DOF_UPSCALE\n                let blurTexelSize = 1.0 / vec2f(textureDimensions(blurTexture, 0));\n                var bilinearBlur = vec3f(0.0);\n                var totalWeight = 0.0;\n\n                // 3x3 grid of neighboring texels\n                for (var i = -1; i <= 1; i++) {\n                    for (var j = -1; j <= 1; j++) {\n                        let offset = vec2f(f32(i), f32(j)) * blurTexelSize;\n                        let cocSample = textureSampleLevel(cocTexture, cocTextureSampler, uv + offset, 0.0).rg;\n                        let blurSample = textureSampleLevel(blurTexture, blurTextureSampler, uv + offset, 0.0).rgb;\n\n                        // Accumulate the weighted blur sample\n                        let 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 = textureSampleLevel(blurTexture, blurTextureSampler, uv, 0.0).rgb;\n                return dBlur;\n            #endif\n        }\n\n        fn applyDof(color: vec3f, uv: vec2f) -> vec3f {\n            let blur = getDofBlur(uv);\n            return mix(color, blur, dCoc.r + dCoc.g);\n        }\n    #endif\n";
export default _default;