File: fs-nested-loop-unrolled-with-return.shader_test

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# This tests for a bug in LLVM based drivers where the LLVM validator cannot
# handle a break that is not the last instruction in the block. radeonsi
# in order to speed up compilation only runs GLSL IR optimisation passes a
# limited number of times. So we need to make sure it successfully removed any
# instructions following a break before creating the LLVM IR.
#
[require]
GLSL >= 1.10

[vertex shader]
void main(void)
{
  gl_Position = gl_Vertex;
}

[fragment shader]
uniform int a;

vec4 getColour() {
  /* We use a uniform in the outer loop comparision so it's not immediately
   * unrolled.
   */
  for(int v124 = 0; v124 != a; v124++) {
    for(int v229 = 1; v229 > 0; v229--) {
      return vec4(0.0, 1.0, 0.0, 1.0);
    }
  }

  return vec4(1.0, 0.0, 0.0, 1.0);
}

void main(void) {
  gl_FragColor = getColour();
}

[test]
uniform int a 1

draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0