03d93abc1a
There is a risk that we try to preserve a loop variable through multiple iterations, even though the dominating block is inside a loop. Fix this by analyzing if a block starts off by writing to a variable. In that case, there cannot be any preservation going on. If we don't, pretend the loop header is reading the variable, which moves the variable to an appropriate scope.
22 lines
290 B
GLSL
22 lines
290 B
GLSL
#version 310 es
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precision mediump float;
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layout(location = 0) out vec4 FragColor;
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void main()
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{
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float v;
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bool written = false;
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for (int i = 0; i < 4; i++)
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{
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float w = 0.0;
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if (written)
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w += v;
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else
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v = 20.0;
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v += float(i);
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written = true;
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}
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FragColor = vec4(1.0);
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}
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