a535aa586b
This way, we match C/C++ in that casting a bool to an int gives either the value zero or the value one. There is a new stdlib function int sign_extend(bool) that does sign extension for cases where that's desired.
36 lines
923 B
Plaintext
36 lines
923 B
Plaintext
static float float4(uniform float a, uniform float b, uniform float c,
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uniform float d) {
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float ret = 0;
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for (uniform int i = 0; i < programCount; i += 4) {
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ret = insert(ret, i + 0, a);
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ret = insert(ret, i + 1, b);
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ret = insert(ret, i + 2, c);
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ret = insert(ret, i + 3, d);
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}
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return ret;
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}
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export uniform int width() { return programCount; }
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export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
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float a = aFOO[programIndex];
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uniform int ret = 0;
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float v = float4(1,1,0,0);
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bool b = (v == 1.);
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ret = __movmsk((sign_extend(b)));
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RET[programIndex] = ret;
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}
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// fixme for 16-wide...
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export void result(uniform float RET[]) {
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uniform int x = -1234;
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if (programCount == 4) x = 3;
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else if (programCount == 8) x = 0x33;
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else if (programCount == 16) x = 0x3333;
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RET[programIndex] = x;
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}
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