File: sampler-02.frag

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// [config]
// expect_result: fail
// glsl_version: 1.10
//
// [end config]

/* FAIL
 *
 * From page 17 (page 23 of the PDF) of the GLSL 1.20 spec:
 *
 *    "Samplers cannot be treated as l-values; hence cannot be used as
 *     out or inout function parameters, nor can they be assigned into."
 */

uniform sampler2D tex;
varying vec2 coord;

void main()
{
  sampler2D t2 = tex;
  gl_FragColor = texture2D(t2, coord);
}