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Saturation arithmetic (sub and add) was added for int32/int64.

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Vsevolod Livinskij
2014-02-17 18:55:40 +04:00
parent 04fda2fcbe
commit f5508db24f
17 changed files with 512 additions and 0 deletions
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27
tests/padds_vi32.ispc Normal file
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export uniform int width() { return programCount; }
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
varying int32 a_max = 2147483647, a_min = -2147483648; // max and min signed int32
if (programIndex % 3 == 0) {
RET[programIndex] = saturating_add(a_max, b);
}
else if (programIndex % 3 == 1) {
RET[programIndex] = saturating_add(a_min, -b);
}
else {
RET[programIndex] = saturating_add(a_min, b);
}
}
export void result(uniform float RET[]) {
if (programIndex % 3 == 0) {
RET[programIndex] = (varying int32) 2147483647;
}
else if (programIndex % 3 == 1) {
RET[programIndex] = (varying int32) -2147483648;
}
else {
RET[programIndex] = (varying int32) -2147483643;
}
}