3 uniform half4 colorGreen, colorRed;
5 struct S {float f1; vec2 v2; };
7 bool test_same_types(bool eq, float f1, float v2, float f3, float f4, float f5, float f6) {
8 float one = colorGreen.r + 1;
9 S a[2]; a[0].f1 = f1; a[0].v2 = vec2(v2, f3);
10 a[1].f1 = f4; a[1].v2 = vec2(f5, f6);
11 S b[2]; b[0].f1 = f1 * one; b[0].v2 = vec2(v2 * one, f3 * one);
12 b[1].f1 = f4 * one; b[1].v2 = vec2(f5 * one, f6 * one);
13 return eq ? a == b : a != b;
16 bool test_diff_types(bool eq, float f1, float v2, float f3, float f4, float f5, float f6) {
17 float two = colorGreen.r + 2;
18 S a[2]; a[0].f1 = f1; a[0].v2 = vec2(v2, f3);
19 a[1].f1 = f4; a[1].v2 = vec2(f5, f6);
20 S b[2]; b[0].f1 = f1 * two; b[0].v2 = vec2(v2 * two, f3 * two);
21 b[1].f1 = f4 * two; b[1].v2 = vec2(f5 * two, f6);
22 return eq ? a == b : a != b;
25 vec4 main(vec2 coords) {
27 float NAN1 = colorGreen.r/colorGreen.b;
28 float NAN2 = colorGreen.b/colorGreen.r;
29 float ZP = +colorGreen.r*colorGreen.b;
30 float ZM = -colorGreen.r*colorGreen.b;
31 float F42 = colorGreen.g * 42.0;
32 float F43 = colorGreen.g * 43.0;
33 float F44 = colorGreen.g * 44.0;
34 float F45 = colorGreen.g * 45.0;
35 float F46 = colorGreen.g * 46.0;
36 float F47 = colorGreen.g * 47.0;
38 bool EQ = true; // Tests for ==
39 bool NE = false; // Tests for !=
42 && test_same_types(EQ, F42, ZM, ZP, F43, F44, F45) // equal, including -0 and +0 values
43 && !test_same_types(NE, F42, ZM, ZP, F43, F44, F45) // not (not equal)
44 && test_same_types(NE, F42, NAN1, NAN2, F43, F44, F45) // NA values always not equal
45 && !test_same_types(EQ, F42, NAN1, NAN2, F43, F44, F45)
46 && test_diff_types(NE, F42, F43, F44, F45, F46, F47) // one of the normal values not equal
47 && !test_diff_types(EQ, F42, F43, F44, F45, F46, F47)
48 && test_diff_types(NE, NAN1, ZM, ZP, F42, F43, F44) // one of the normal values not equal
49 && !test_diff_types(EQ, NAN1, ZM, ZP, F42, F43, F44)
50 ? colorGreen : colorRed;