22 lines
807 B
GLSL
22 lines
807 B
GLSL
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out vec4 sk_FragColor;
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uniform vec4 colorGreen;
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uniform vec4 colorRed;
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vec4 main() {
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vec4 value = vec4(2.5, -2.5, 8.0, -0.125);
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const vec4 expectedWhole = vec4(2.0, -2.0, 8.0, 0.0);
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const vec4 expectedFraction = vec4(0.5, -0.5, 0.0, -0.125);
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bvec4 ok = bvec4(false);
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vec4 whole;
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vec4 fraction;
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fraction.x = modf(value.x, whole.x);
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ok.x = whole.x == 2.0 && fraction.x == 0.5;
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fraction.xy = modf(value.xy, whole.xy);
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ok.y = whole.xy == vec2(2.0, -2.0) && fraction.xy == vec2(0.5, -0.5);
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fraction.xyz = modf(value.xyz, whole.xyz);
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ok.z = whole.xyz == vec3(2.0, -2.0, 8.0) && fraction.xyz == vec3(0.5, -0.5, 0.0);
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fraction = modf(value, whole);
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ok.w = whole == expectedWhole && fraction == expectedFraction;
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return all(ok) ? colorGreen : colorRed;
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}
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