bjectToCanvasLinearComponent;
      uniform float4 uBrushColor;
      uniform int uTextureMapping;
      uniform float uTextureAnimationProgress;
      uniform int uNumTextureAnimationFrames;
      uniform int uNumTextureAnimationRows;
      uniform int uNumTextureAnimationColumns;

      Varyings main(const Attributes attributes) {
        Varyings varyings;
        varyings.position = attributes.positionAndOpacityShift.xy;

        varyings.position += calculateAntialiasingAndPositionOutset(
            attributes.sideDerivativeAndLabel,
            attributes.forwardDerivativeAndLabel,
            mat2FromFloat4ColumnMajor(uObjectToCanvasLinearComponent),
            varyings.pixelsPerDimension,
            varyings.normalizedToEdgeLRFB,
            varyings.outsetPixelsLRFB);

        varyings.color = applyHSLAndOpacityShift(
            attributes.hslShift, attributes.positionAndOpacityShift.z,
            uBrushColor);
        varyings.color.rgb *= varyings.color.a;

        if (uTextureMapping == 1) {
          varyings.textureCoords = calculateWindingTextureUv(
              unpackSurfaceUv(attributes.surfaceUvAndAnimationOffset.xy),
              unpackAnimationOffset(attributes.surfaceUvAndAnimationOffset.z),
              uTextureAnimationProgress,
              uNumTextureAnimationFrames,
              uNumTextureAnimationRows,
              uNumTextureAnimationColumns);
        } else {
          varyings.textureCoords = varyings.position;
        }

        return varyings;
      }