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katsumoto
Joined: 27 Jul 2006
Posts: 5
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 Posted: Sun Aug 06, 2006 11:48 am Post subject: VFPU 4x4 matrix inverse |
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Hello,
| Code: |
GLfloat out[16], in[16]
asm volatile (
"ulv.q c400, 0 + %1\n"
"ulv.q c410, 16 + %1\n"
"ulv.q c420, 32 + %1\n"
"ulv.q c600, 48 + %1\n"
"vzero.t c430\n"
"vtfm3.t c610, m400, c600\n"
"vneg.t c600, c610\n"
"usv.q r400, 0 + %0\n"
"usv.q r401, 16 + %0\n"
"usv.q r402, 32 + %0\n"
"usv.q c600, 48 + %0\n"
: "=m" (*out) : "m" (*in)); |
someone can fix my code? |
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chp
Joined: 23 Jun 2004
Posts: 313
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| Posted: Mon Aug 07, 2006 3:50 pm Post subject: |
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This function that I wrote for pspgum works just fine: | Code: | void gumFastInverse(ScePspFMatrix4* m, const ScePspFMatrix4* a)
{
pspvfpu_use_matrices(gum_vfpucontext, 0, VMAT0 | VMAT1 | VMAT2);
__asm__ volatile (
"ulv.q C200, 0 + %1\n"
"ulv.q C210, 16 + %1\n"
"ulv.q C220, 32 + %1\n"
"ulv.q C230, 48 + %1\n"
"vmidt.q M000\n"
"vmmov.t M000, E200\n"
"vneg.t C100, C230\n"
"vtfm3.t C030, M200, C100\n"
"usv.q C000, 0 + %0\n"
"usv.q C010, 16 + %0\n"
"usv.q C020, 32 + %0\n"
"usv.q C030, 48 + %0\n"
: "=m"(*m) : "m"(*a) : "memory" );
} |
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