export declare const frag = "\n\nuniform sampler2D u_Texture;\nin vec2 v_Uv;\n\nlayout(std140) uniform PostProcessingUniforms {\n  float u_Contrast;\n};\n\nout vec4 outputColor;\n\nvoid main() {\n  outputColor = texture(SAMPLER_2D(u_Texture), v_Uv);\n  if (u_Contrast > 0.0) {\n    outputColor.rgb = (outputColor.rgb - 0.5) / (1.0 - u_Contrast) + 0.5;\n  } else {\n    outputColor.rgb = (outputColor.rgb - 0.5) * (1.0 + u_Contrast) + 0.5;\n  }\n}\n";