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new math func

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This commit is contained in:
Nishi 2026-01-30 08:44:11 +09:00
commit 68e1228193
Signed by: nishi
GPG key ID: 27EF69B208EB9343
4 changed files with 38 additions and 0 deletions
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21
engine/src/math.c
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@ -99,6 +99,27 @@ void GSMathRowToColumn4x4(GSMatrix4x4 out, GSMatrix4x4 in) {
}
}
void GSMathRowToColumn3x3(GSMatrix3x3 out, GSMatrix3x3 in) {
int y, x;
for(y = 0; y < 3; y++) {
for(x = 0; x < 3; x++) {
out[3 * x + y] = in[3 * y + x];
}
}
}
void GSMath3x3To4x4(GSMatrix4x4 out, GSMatrix3x3 in) {
int y, x, i;
for(i = 0; i < 16; i++) out[i] = 0;
for(y = 0; y < 3; y++) {
for(x = 0; x < 3; x++) {
out[4 * y + x] = in[3 * y + x];
}
}
out[15] = 1;
}
void GSMathInvert4x4(GSMatrix4x4 out, GSMatrix4x4 in) {
GSNumber inv[16], det;
int i;