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st/nine: Fix ff computation for inverse

Browse source 
Thanks to wine tests.
Apparently 4x4 inverse is to be used, and
if the inverse can't be calculated, the
input matrix is to be used.

Signed-off-by: Axel Davy <axel.davy@ens.fr>
This commit is contained in:
Axel Davy 2016-09-25 12:43:29 +02:00
parent 36399f9a7f
commit 7afcbb49ba
2 changed files with 6 additions and 23 deletions
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26
src/gallium/state_trackers/nine/nine_ff.c
View file

@ -1825,7 +1825,7 @@ nine_ff_load_vs_transforms(struct NineDevice9 *device)
nine_d3d_matrix_matrix_mul(&M[0], &M[1], GET_D3DTS(PROJECTION));
/* normal matrix == transpose(inverse(WV)) */
nine_d3d_matrix_inverse_3x3(&T, &M[1]);
nine_d3d_matrix_inverse(&T, &M[1]);
nine_d3d_matrix_transpose(&M[4], &T);
/* P matrix */
@ -2445,6 +2445,11 @@ nine_d3d_matrix_inverse(D3DMATRIX *D, const D3DMATRIX *M)
M->m[2][0] * D->m[0][2] +
M->m[3][0] * D->m[0][3];
if (det < 1e-30) {/* non inversible */
*D = *M; /* wine tests */
return;
}
det = 1.0 / det;
for (i = 0; i < 4; i++)
@ -2464,22 +2469,3 @@ nine_d3d_matrix_inverse(D3DMATRIX *D, const D3DMATRIX *M)
}
#endif
}
/* TODO: don't use 4x4 inverse, unless this gets all nicely inlined ? */
void
nine_d3d_matrix_inverse_3x3(D3DMATRIX *D, const D3DMATRIX *M)
{
D3DMATRIX T;
unsigned i, j;
for (i = 0; i < 3; ++i)
for (j = 0; j < 3; ++j)
T.m[i][j] = M->m[i][j];
for (i = 0; i < 3; ++i) {
T.m[i][3] = 0.0f;
T.m[3][i] = 0.0f;
}
T.m[3][3] = 1.0f;
nine_d3d_matrix_inverse(D, &T);
}

3
src/gallium/state_trackers/nine/nine_ff.h
View file

@ -24,9 +24,6 @@ nine_d3d_matrix_det(const D3DMATRIX *);
void
nine_d3d_matrix_inverse(D3DMATRIX *, const D3DMATRIX *);
void
nine_d3d_matrix_inverse_3x3(D3DMATRIX *, const D3DMATRIX *);
void
nine_d3d_matrix_transpose(D3DMATRIX *, const D3DMATRIX *);