зеркало из https://github.com/stride3d/xkslang.git
64 строки
1.3 KiB
GLSL
64 строки
1.3 KiB
GLSL
#version 400
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uniform float u;
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int foo(int a, const int b, in int c, const in int d, out int e, inout int f)
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{
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int sum = a + b + c + d + f; // no e, it is out only
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// sum should be 47 now
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a *= 64;
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// no b, it is read only
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c *= 64;
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// no d, it is read only
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e = 64 * 16; // e starts undefined
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f *= 64;
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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
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// sum should be 4032 + 47 = 4079
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return sum;
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}
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int foo2(float a, vec3 b, out int r)
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{
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r = int(3.0 * a);
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return int(5.0 * b.y);
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}
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int foo3()
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{
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if (u > 3.2) {
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discard;
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return 1000000;
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}
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return 2000000;
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}
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void main()
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{
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int e;
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int t = 2;
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struct s {
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ivec4 t;
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} f;
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f.t.y = 32;
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// test the different qualifers
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int color = foo(1, 2, t+t, 8, e, f.t.y);
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color += 128 * (e + f.t.y); // right side should be 128(64(16 + 32)) = 393216
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// sum should be 4079 + 393216 = 397295
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// test conversions
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float arg;
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float ret;
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ret = foo2(4, ivec3(1,2,3), arg); // ret = 10, param = 12.0
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color += int(ret + arg); // adds 22, for total of 397317
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color += foo3(); // theoretically, add 2000000, for total of 2397317
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gl_FragColor = vec4(color);
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}
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