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Differential D15982 Diff 57482 source/blender/render/intern/bake.c

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source/blender/render/intern/bake.c

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* struct wrapping up tangent space data * struct wrapping up tangent space data
*/ */
typedef struct TSpace { typedef struct TSpace {
float tangent[3]; float tangent[3];
float sign; float sign;
} TSpace; } TSpace;
typedef struct TriTessFace { typedef struct TriTessFace {
const MVert *mverts[3]; const float *positions[3];
const float *vert_normals[3]; const float *vert_normals[3];
const TSpace *tspace[3]; const TSpace *tspace[3];
const float *loop_normal[3]; const float *loop_normal[3];
float normal[3]; /* for flat faces */ float normal[3]; /* for flat faces */
bool is_smooth; bool is_smooth;
} TriTessFace; } TriTessFace;
static void store_bake_pixel(void *handle, int x, int y, float u, float v) static void store_bake_pixel(void *handle, int x, int y, float u, float v)
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int i; int i;
TriTessFace *triangle[2]; TriTessFace *triangle[2];
triangle[0] = &triangles_low[primitive_id]; triangle[0] = &triangles_low[primitive_id];
triangle[1] = &triangles_cage[primitive_id]; triangle[1] = &triangles_cage[primitive_id];
for (i = 0; i < 2; i++) { for (i = 0; i < 2; i++) {
copy_v3_v3(data[i][0], triangle[i]->mverts[0]->co); copy_v3_v3(data[i][0], triangle[i]->positions[0]);
copy_v3_v3(data[i][1], triangle[i]->mverts[1]->co); copy_v3_v3(data[i][1], triangle[i]->positions[1]);
copy_v3_v3(data[i][2], triangle[i]->mverts[2]->co); copy_v3_v3(data[i][2], triangle[i]->positions[2]);
interp_barycentric_tri_v3(data[i], u, v, coord[i]); interp_barycentric_tri_v3(data[i], u, v, coord[i]);
} }
/* convert from local to world space */ /* convert from local to world space */
mul_m4_v3(mat_low, coord[0]); mul_m4_v3(mat_low, coord[0]);
mul_m4_v3(mat_cage, coord[1]); mul_m4_v3(mat_cage, coord[1]);
sub_v3_v3v3(dir, coord[0], coord[1]); sub_v3_v3v3(dir, coord[0], coord[1]);
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float coord[3]; float coord[3];
float dir[3]; float dir[3];
float cage[3]; float cage[3];
bool is_smooth; bool is_smooth;
TriTessFace *triangle = &triangles[primitive_id]; TriTessFace *triangle = &triangles[primitive_id];
is_smooth = triangle->is_smooth || is_cage; is_smooth = triangle->is_smooth || is_cage;
copy_v3_v3(data[0], triangle->mverts[0]->co); copy_v3_v3(data[0], triangle->positions[0]);
copy_v3_v3(data[1], triangle->mverts[1]->co); copy_v3_v3(data[1], triangle->positions[1]);
copy_v3_v3(data[2], triangle->mverts[2]->co); copy_v3_v3(data[2], triangle->positions[2]);
interp_barycentric_tri_v3(data, u, v, coord); interp_barycentric_tri_v3(data, u, v, coord);
if (is_smooth) { if (is_smooth) {
copy_v3_v3(data[0], triangle->vert_normals[0]); copy_v3_v3(data[0], triangle->vert_normals[0]);
copy_v3_v3(data[1], triangle->vert_normals[1]); copy_v3_v3(data[1], triangle->vert_normals[1]);
copy_v3_v3(data[2], triangle->vert_normals[2]); copy_v3_v3(data[2], triangle->vert_normals[2]);
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/* ray direction in high poly object space */ /* ray direction in high poly object space */
float dir_high[3]; float dir_high[3];
mul_v3_mat3_m4v3(dir_high, highpoly[hit_mesh].imat, dir); mul_v3_mat3_m4v3(dir_high, highpoly[hit_mesh].imat, dir);
normalize_v3(dir_high); normalize_v3(dir_high);
/* compute position differentials on low poly object */ /* compute position differentials on low poly object */
float duco_low[3], dvco_low[3], dxco[3], dyco[3]; float duco_low[3], dvco_low[3], dxco[3], dyco[3];
sub_v3_v3v3(duco_low, triangle_low->mverts[0]->co, triangle_low->mverts[2]->co); sub_v3_v3v3(duco_low, triangle_low->positions[0], triangle_low->positions[2]);
sub_v3_v3v3(dvco_low, triangle_low->mverts[1]->co, triangle_low->mverts[2]->co); sub_v3_v3v3(dvco_low, triangle_low->positions[1], triangle_low->positions[2]);
mul_v3_v3fl(dxco, duco_low, pixel_low->du_dx); mul_v3_v3fl(dxco, duco_low, pixel_low->du_dx);
madd_v3_v3fl(dxco, dvco_low, pixel_low->dv_dx); madd_v3_v3fl(dxco, dvco_low, pixel_low->dv_dx);
mul_v3_v3fl(dyco, duco_low, pixel_low->du_dy); mul_v3_v3fl(dyco, duco_low, pixel_low->du_dy);
madd_v3_v3fl(dyco, dvco_low, pixel_low->dv_dy); madd_v3_v3fl(dyco, dvco_low, pixel_low->dv_dy);
/* transform from low poly to high poly object space */ /* transform from low poly to high poly object space */
mul_mat3_m4_v3(mat_low, dxco); mul_mat3_m4_v3(mat_low, dxco);
mul_mat3_m4_v3(mat_low, dyco); mul_mat3_m4_v3(mat_low, dyco);
mul_mat3_m4_v3(highpoly[hit_mesh].imat, dxco); mul_mat3_m4_v3(highpoly[hit_mesh].imat, dxco);
mul_mat3_m4_v3(highpoly[hit_mesh].imat, dyco); mul_mat3_m4_v3(highpoly[hit_mesh].imat, dyco);
/* transfer position differentials */ /* transfer position differentials */
float tmp[3]; float tmp[3];
mul_v3_v3fl(tmp, dir_high, 1.0f / dot_v3v3(dir_high, triangle_high->normal)); mul_v3_v3fl(tmp, dir_high, 1.0f / dot_v3v3(dir_high, triangle_high->normal));
madd_v3_v3fl(dxco, tmp, -dot_v3v3(dxco, triangle_high->normal)); madd_v3_v3fl(dxco, tmp, -dot_v3v3(dxco, triangle_high->normal));
madd_v3_v3fl(dyco, tmp, -dot_v3v3(dyco, triangle_high->normal)); madd_v3_v3fl(dyco, tmp, -dot_v3v3(dyco, triangle_high->normal));
/* compute barycentric differentials from position differentials */ /* compute barycentric differentials from position differentials */
barycentric_differentials_from_position(hits[hit_mesh].co, barycentric_differentials_from_position(hits[hit_mesh].co,
triangle_high->mverts[0]->co, triangle_high->positions[0],
triangle_high->mverts[1]->co, triangle_high->positions[1],
triangle_high->mverts[2]->co, triangle_high->positions[2],
dxco, dxco,
dyco, dyco,
triangle_high->normal, triangle_high->normal,
true, true,
&pixel_high->uv[0], &pixel_high->uv[0],
&pixel_high->uv[1], &pixel_high->uv[1],
&pixel_high->du_dx, &pixel_high->du_dx,
&pixel_high->dv_dx, &pixel_high->dv_dx,
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const int tottri = poly_to_tri_count(me->totpoly, me->totloop); const int tottri = poly_to_tri_count(me->totpoly, me->totloop);
MLoopTri *looptri; MLoopTri *looptri;
TriTessFace *triangles; TriTessFace *triangles;
/* calculate normal for each polygon only once */ /* calculate normal for each polygon only once */
uint mpoly_prev = UINT_MAX; uint mpoly_prev = UINT_MAX;
float no[3]; float no[3];
const MVert *verts = BKE_mesh_verts(me); const float(*positions)[3] = BKE_mesh_positions(me);
const MPoly *polys = BKE_mesh_polys(me); const MPoly *polys = BKE_mesh_polys(me);
const MLoop *loops = BKE_mesh_loops(me); const MLoop *loops = BKE_mesh_loops(me);
looptri = MEM_mallocN(sizeof(*looptri) * tottri, __func__); looptri = MEM_mallocN(sizeof(*looptri) * tottri, __func__);
triangles = MEM_callocN(sizeof(TriTessFace) * tottri, __func__); triangles = MEM_callocN(sizeof(TriTessFace) * tottri, __func__);
const float(*precomputed_normals)[3] = BKE_mesh_poly_normals_are_dirty(me) ? const float(*precomputed_normals)[3] = BKE_mesh_poly_normals_are_dirty(me) ?
NULL : NULL :
BKE_mesh_poly_normals_ensure(me); BKE_mesh_poly_normals_ensure(me);
const bool calculate_normal = precomputed_normals ? false : true; const bool calculate_normal = precomputed_normals ? false : true;
if (precomputed_normals != NULL) { if (precomputed_normals != NULL) {
BKE_mesh_recalc_looptri_with_normals( BKE_mesh_recalc_looptri_with_normals(
loops, polys, verts, me->totloop, me->totpoly, looptri, precomputed_normals); loops, polys, positions, me->totloop, me->totpoly, looptri, precomputed_normals);
} }
else { else {
BKE_mesh_recalc_looptri(loops, polys, verts, me->totloop, me->totpoly, looptri); BKE_mesh_recalc_looptri(loops, polys, positions, me->totloop, me->totpoly, looptri);
} }
const TSpace *tspace = NULL; const TSpace *tspace = NULL;
const float(*loop_normals)[3] = NULL; const float(*loop_normals)[3] = NULL;
if (tangent) { if (tangent) {
BKE_mesh_ensure_normals_for_display(me_eval); BKE_mesh_ensure_normals_for_display(me_eval);
BKE_mesh_calc_normals_split(me_eval); BKE_mesh_calc_normals_split(me_eval);
BKE_mesh_calc_loop_tangents(me_eval, true, NULL, 0); BKE_mesh_calc_loop_tangents(me_eval, true, NULL, 0);
tspace = CustomData_get_layer(&me_eval->ldata, CD_TANGENT); tspace = CustomData_get_layer(&me_eval->ldata, CD_TANGENT);
BLI_assert(tspace); BLI_assert(tspace);
loop_normals = CustomData_get_layer(&me_eval->ldata, CD_NORMAL); loop_normals = CustomData_get_layer(&me_eval->ldata, CD_NORMAL);
} }
const float(*vert_normals)[3] = BKE_mesh_vertex_normals_ensure(me); const float(*vert_normals)[3] = BKE_mesh_vertex_normals_ensure(me);
for (i = 0; i < tottri; i++) { for (i = 0; i < tottri; i++) {
const MLoopTri *lt = &looptri[i]; const MLoopTri *lt = &looptri[i];
const MPoly *mp = &polys[lt->poly]; const MPoly *mp = &polys[lt->poly];
triangles[i].mverts[0] = &verts[loops[lt->tri[0]].v]; triangles[i].positions[0] = positions[loops[lt->tri[0]].v];
triangles[i].mverts[1] = &verts[loops[lt->tri[1]].v]; triangles[i].positions[1] = positions[loops[lt->tri[1]].v];
triangles[i].mverts[2] = &verts[loops[lt->tri[2]].v]; triangles[i].positions[2] = positions[loops[lt->tri[2]].v];
triangles[i].vert_normals[0] = vert_normals[loops[lt->tri[0]].v]; triangles[i].vert_normals[0] = vert_normals[loops[lt->tri[0]].v];
triangles[i].vert_normals[1] = vert_normals[loops[lt->tri[1]].v]; triangles[i].vert_normals[1] = vert_normals[loops[lt->tri[1]].v];
triangles[i].vert_normals[2] = vert_normals[loops[lt->tri[2]].v]; triangles[i].vert_normals[2] = vert_normals[loops[lt->tri[2]].v];
triangles[i].is_smooth = (mp->flag & ME_SMOOTH) != 0; triangles[i].is_smooth = (mp->flag & ME_SMOOTH) != 0;
if (tangent) { if (tangent) {
triangles[i].tspace[0] = &tspace[lt->tri[0]]; triangles[i].tspace[0] = &tspace[lt->tri[0]];
triangles[i].tspace[1] = &tspace[lt->tri[1]]; triangles[i].tspace[1] = &tspace[lt->tri[1]];
triangles[i].tspace[2] = &tspace[lt->tri[2]]; triangles[i].tspace[2] = &tspace[lt->tri[2]];
} }
if (loop_normals) { if (loop_normals) {
triangles[i].loop_normal[0] = loop_normals[lt->tri[0]]; triangles[i].loop_normal[0] = loop_normals[lt->tri[0]];
triangles[i].loop_normal[1] = loop_normals[lt->tri[1]]; triangles[i].loop_normal[1] = loop_normals[lt->tri[1]];
triangles[i].loop_normal[2] = loop_normals[lt->tri[2]]; triangles[i].loop_normal[2] = loop_normals[lt->tri[2]];
} }
if (calculate_normal) { if (calculate_normal) {
if (lt->poly != mpoly_prev) { if (lt->poly != mpoly_prev) {
BKE_mesh_calc_poly_normal(mp, &loops[mp->loopstart], verts, no); BKE_mesh_calc_poly_normal(mp, &loops[mp->loopstart], positions, no);
mpoly_prev = lt->poly; mpoly_prev = lt->poly;
} }
copy_v3_v3(triangles[i].normal, no); copy_v3_v3(triangles[i].normal, no);
} }
else { else {
copy_v3_v3(triangles[i].normal, precomputed_normals[lt->poly]); copy_v3_v3(triangles[i].normal, precomputed_normals[lt->poly]);
} }
} }
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for (int i = 0; i < targets->images_num; i++) { for (int i = 0; i < targets->images_num; i++) {
zbuf_alloc_span(&bd.zspan[i], targets->images[i].width, targets->images[i].height); zbuf_alloc_span(&bd.zspan[i], targets->images[i].width, targets->images[i].height);
} }
const int tottri = poly_to_tri_count(me->totpoly, me->totloop); const int tottri = poly_to_tri_count(me->totpoly, me->totloop);
MLoopTri *looptri = MEM_mallocN(sizeof(*looptri) * tottri, __func__); MLoopTri *looptri = MEM_mallocN(sizeof(*looptri) * tottri, __func__);
const MVert *verts = BKE_mesh_verts(me); const float(*positions)[3] = BKE_mesh_positions(me);
const MPoly *polys = BKE_mesh_polys(me); const MPoly *polys = BKE_mesh_polys(me);
const MLoop *loops = BKE_mesh_loops(me); const MLoop *loops = BKE_mesh_loops(me);
BKE_mesh_recalc_looptri(loops, polys, verts, me->totloop, me->totpoly, looptri); BKE_mesh_recalc_looptri(loops, polys, positions, me->totloop, me->totpoly, looptri);
const int *material_indices = BKE_mesh_material_indices(me); const int *material_indices = BKE_mesh_material_indices(me);
const int materials_num = targets->materials_num; const int materials_num = targets->materials_num;
for (int i = 0; i < tottri; i++) { for (int i = 0; i < tottri; i++) {
const MLoopTri *lt = &looptri[i]; const MLoopTri *lt = &looptri[i];
bd.primitive_id = i; bd.primitive_id = i;
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