declare const _default: "\n#ifdef PIXELSNAP\nuniform vec4 uScreenSize;\n#endif\n\n#ifdef SCREENSPACE\nuniform float projectionFlipY;\n#endif\n\nvec4 evalWorldPosition(vec3 vertexPosition, mat4 modelMatrix) {\n\n    vec3 localPos = getLocalPosition(vertexPosition);\n\n    #ifdef NINESLICED\n        // outer and inner vertices are at the same position, scale both\n        localPos.xz *= outerScale;\n\n        // offset inner vertices inside\n        // (original vertices must be in [-1;1] range)\n        vec2 positiveUnitOffset = clamp(vertexPosition.xz, vec2(0.0), vec2(1.0));\n        vec2 negativeUnitOffset = clamp(-vertexPosition.xz, vec2(0.0), vec2(1.0));\n        localPos.xz += (-positiveUnitOffset * innerOffset.xy + negativeUnitOffset * innerOffset.zw) * vertex_texCoord0.xy;\n\n        vTiledUv = (localPos.xz - outerScale + innerOffset.xy) * -0.5 + 1.0; // uv = local pos - inner corner\n\n        localPos.xz *= -0.5; // move from -1;1 to -0.5;0.5\n        localPos = localPos.xzy;\n    #endif\n\n    vec4 posW = modelMatrix * vec4(localPos, 1.0);\n\n    #ifdef SCREENSPACE\n        posW.zw = vec2(0.0, 1.0);\n    #endif\n\n    return posW;\n}\n\nvec4 getPosition() {\n\n    dModelMatrix = getModelMatrix();\n\n    vec4 posW = evalWorldPosition(vertex_position.xyz, dModelMatrix);\n    dPositionW = posW.xyz;\n\n    vec4 screenPos;\n    #ifdef UV1LAYOUT\n    screenPos = vec4(vertex_texCoord1.xy * 2.0 - 1.0, 0.5, 1);\n        #ifdef WEBGPU\n        screenPos.y *= -1.0;\n        #endif\n    #else\n    #ifdef SCREENSPACE\n    screenPos = posW;\n    screenPos.y *= projectionFlipY;\n    #else\n    screenPos = matrix_viewProjection * posW;\n    #endif\n\n    #ifdef PIXELSNAP\n    // snap vertex to a pixel boundary\n    screenPos.xy = (screenPos.xy * 0.5) + 0.5;\n    screenPos.xy *= uScreenSize.xy;\n    screenPos.xy = floor(screenPos.xy);\n    screenPos.xy *= uScreenSize.zw;\n    screenPos.xy = (screenPos.xy * 2.0) - 1.0;\n    #endif\n    #endif\n\n    return screenPos;\n}\n\nvec3 getWorldPosition() {\n    return dPositionW;\n}\n";
export default _default;