зеркало из https://github.com/stride3d/xkslang.git
31 строка
669 B
GLSL
31 строка
669 B
GLSL
#define f1(i) ((i)*(i))
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#define I2(f, n) f(n) + f(n+1)
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#define I3(f, n) I2(f, n) + f(n+2)
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#define FL_f1(i) ((i)*(i))
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#define FL_I2(f, n) f(n) + f(n+0.2)
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#define FL_I3(f, n) FL_I2(f, n) + f(n+0.5)
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void main()
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{
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int f1 = 4;
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int f2 = f1;
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int f3 = f1(3);
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int f4 = I2(f1, 0);
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int f5 = I3(f1, 0);
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highp float fl_f5 = FL_I3(FL_f1, 0.1);
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}
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// f5 = I3(f1, 0)
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// = I2(f1, 0) + f1(0 + 2)
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// = f1(0) + f1(0+1) + f1(0+2)
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// = 0*0 + 1*1 + 2*2
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// = 5
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// fl_f5 = FL_I3(FL_f1, 0.1)
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// = FL_I2(FL_f1, 0.1) + FL_f1(0.1 + 0.5)
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// = FL_f1(0.1) + FL_f1(0.1 + 0.2) + FL_f1(0.1 + 0.5)
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// = 0.1*0.1 + 0.3*0.3 + 0.6*0.6
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// = 0.46
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