1 #version 400 2 3 uniform float u; 4 5 int foo(int a, const int b, in int c, const in int d, out int e, inout int f) 6 { 7 int sum = a + b + c + d + f; // no e, it is out only 8 // sum should be 47 now 9 10 a *= 64; 11 // no b, it is read only 12 c *= 64; 13 // no d, it is read only 14 e = 64 * 16; // e starts undefined 15 f *= 64; 16 17 sum += a + 64 * b + c + 64 * d + e + f; // everything has a value now, totaling of 64(1+2+4+8+16+32) = 64*63 = 4032 18 // sum should be 4032 + 47 = 4079 19 20 return sum; 21 } 22 23 int foo2(float a, vec3 b, out int r) 24 { 25 r = int(3.0 * a); 26 return int(5.0 * b.y); 27 } 28 29 int foo3() 30 { 31 if (u > 3.2) { 32 discard; 33 return 1000000; 34 } 35 36 return 2000000; 37 } 38 39 void main() 40 { 41 int e; 42 int t = 2; 43 struct s { 44 ivec4 t; 45 } f; 46 f.t.y = 32; 47 48 // test the different qualifers 49 int color = foo(1, 2, t+t, 8, e, f.t.y); 50 51 color += 128 * (e + f.t.y); // right side should be 128(64(16 + 32)) = 393216 52 // sum should be 4079 + 393216 = 397295 53 54 // test conversions 55 float arg; 56 float ret; 57 ret = foo2(4, ivec3(1,2,3), arg); // ret = 10, param = 12.0 58 color += int(ret + arg); // adds 22, for total of 397317 59 60 color += foo3(); // theoretically, add 2000000, for total of 2397317 61 62 gl_FragColor = vec4(color); 63 } 64 65 vec3 m(vec2); 66 void aggCall() 67 { 68 float F; 69 m(ivec2(F)); // test input conversion of single argument that's an aggregate; other function tests in 120.vert 70 } 71 72 vec4 badConv() 73 { 74 return u; // ERROR, can change scalar to vector 75 }
