1#version 300 2 3uniform half4 colorGreen, colorRed; 4 5bool test_same_arrays(bool eq, float f1, float f2, float f3) { 6 float one = colorGreen.r + 1; 7 float a[3]; a[0] = f1; a[1] = f2; a[2] = f3; 8 float b[3]; b[0] = f1 * one; b[1] = f2 * one; b[2] = f3 * one; 9 return eq ? a == b : a != b; 10} 11 12bool test_diff_arrays(bool eq, float f1, float f2, float f3) { 13 float two = colorGreen.r + 2; 14 float a[3]; a[0] = f1; a[1] = f2; a[2] = f3; 15 float b[3]; b[0] = f1 * two; b[1] = f2 * two; b[2] = f3; 16 return eq ? a == b : a != b; 17} 18 19vec4 main(vec2 coords) { 20 21 float NAN1 = colorGreen.r/colorGreen.b; 22 float NAN2 = colorGreen.b/colorGreen.r; 23 float ZP = +colorGreen.r*colorGreen.b; 24 float ZM = -colorGreen.r*colorGreen.b; 25 float F42 = colorGreen.g * 42.0; 26 float F43 = colorGreen.g * 43.0; 27 float F44 = colorGreen.g * 44.0; 28 29 bool EQ = true; // Tests for == 30 bool NE = false; // Tests for != 31 32 return true 33 && test_same_arrays(EQ, F42, ZM, ZP) // equal, including -0 and +0 values 34 && !test_same_arrays(NE, F42, ZM, ZP) // not (not equal) 35 && test_same_arrays(NE, F42, NAN1, NAN2) // NA values always not equal 36 && !test_same_arrays(EQ, F42, NAN1, NAN2) 37 && test_diff_arrays(NE, F42, F43, F44) // one of the normal values not equal 38 && !test_diff_arrays(EQ, F42, F43, F44) 39 && test_diff_arrays(NE, NAN1, ZM, ZP) // one of the normal values not equal 40 && !test_diff_arrays(EQ, NAN1, ZM, ZP) 41 ? colorGreen : colorRed; 42} 43