static void DrawBackground2D_3D(M_Background2D *bck, Background2DStack *st, GF_TraverseState *tr_state)
{
GF_Matrix mx;
Bool use_texture;
use_texture = back_texture_enabled(bck, &st->txh);
visual_3d_set_background_state(tr_state->visual, 1);
visual_3d_matrix_push(tr_state->visual);
/* visual_3d_set_matrix_mode(tr_state->visual, V3D_MATRIX_TEXTURE);
gf_sc_texture_get_transform(&st->txh, NULL, &mx, 0);
visual_3d_matrix_load(tr_state->visual, mx.m);
*/
visual_3d_set_matrix_mode(tr_state->visual, V3D_MATRIX_MODELVIEW);
/*little opt: if we clear the main visual clear it entirely */
if (! tr_state->is_layer) {
visual_3d_clear(tr_state->visual, bck->backColor, FIX_ONE);
if (!use_texture) {
visual_3d_matrix_pop(tr_state->visual);
visual_3d_set_background_state(tr_state->visual, 0);
return;
}
/*we need a hack here because main vp is always traversed before main background, and in the case of a
2D viewport it modifies the modelview matrix, which we don't want ...*/
visual_3d_matrix_reset(tr_state->visual);
}
if (!use_texture || (!tr_state->is_layer && st->txh.transparent) ) visual_3d_set_material_2d(tr_state->visual, bck->backColor, FIX_ONE);
if (use_texture) {
visual_3d_set_state(tr_state->visual, V3D_STATE_COLOR, ! tr_state->is_layer);
tr_state->mesh_num_textures = gf_sc_texture_enable(&st->txh, NULL);
if (!tr_state->mesh_num_textures) visual_3d_set_material_2d(tr_state->visual, bck->backColor, FIX_ONE);
}
/*create mesh object if needed*/
if (!st->mesh) {
st->mesh = new_mesh();
mesh_set_vertex(st->mesh, -B2D_PLANE_HSIZE, -B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, 0, 0);
mesh_set_vertex(st->mesh, B2D_PLANE_HSIZE, -B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, FIX_ONE, 0);
mesh_set_vertex(st->mesh, B2D_PLANE_HSIZE, B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, FIX_ONE, FIX_ONE);
mesh_set_vertex(st->mesh, -B2D_PLANE_HSIZE, B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, 0, FIX_ONE);
mesh_set_triangle(st->mesh, 0, 1, 2); mesh_set_triangle(st->mesh, 0, 2, 3);
st->mesh->flags |= MESH_IS_2D;
}
gf_mx_init(mx);
if (tr_state->camera->is_3D) {
Fixed sx, sy;
/*reset matrix*/
visual_3d_matrix_reset(tr_state->visual);
sx = sy = 2 * gf_mulfix(gf_tan(tr_state->camera->fieldOfView/2), tr_state->camera->z_far);
if (tr_state->camera->width > tr_state->camera->height) {
sx = gf_muldiv(sx, tr_state->camera->width, tr_state->camera->height);
} else {
sy = gf_muldiv(sy, tr_state->camera->height, tr_state->camera->width);
}
gf_mx_add_scale(&mx, sx, sy, FIX_ONE);
#ifdef GPAC_FIXED_POINT
gf_mx_add_translation(&mx, 0, 0, - (tr_state->camera->z_far/100)*99);
#else
gf_mx_add_translation(&mx, 0, 0, -0.995f*tr_state->camera->z_far);
#endif
} else {
gf_mx_add_scale(&mx, tr_state->bbox.max_edge.x - tr_state->bbox.min_edge.x,
tr_state->bbox.max_edge.y - tr_state->bbox.min_edge.y,
FIX_ONE);
/*when in layer2D, DON'T MOVE BACKGROUND TO ZFAR*/
if (!tr_state->is_layer) {
Fixed tr;
#ifdef GPAC_FIXED_POINT
tr = -(tr_state->camera->z_far/100)*99;
#else
tr = -0.999f*tr_state->camera->z_far;
#endif
if (!tr_state->camera->is_3D) tr = -tr;
gf_mx_add_translation(&mx, 0, 0, tr);
}
}
visual_3d_matrix_add(tr_state->visual, mx.m);
visual_3d_mesh_paint(tr_state, st->mesh);
if (tr_state->mesh_num_textures) {
gf_sc_texture_disable(&st->txh);
tr_state->mesh_num_textures = 0;
}
visual_3d_matrix_pop(tr_state->visual);
visual_3d_set_background_state(tr_state->visual, 0);
}
static void TraverseBackground(GF_Node *node, void *rs, Bool is_destroy)
{
M_Background *bck;
BackgroundStack *st;
SFColor bcol;
SFVec4f res;
Fixed scale;
Bool has_sky, has_ground, front_tx, back_tx, top_tx, bottom_tx, right_tx, left_tx;
GF_Matrix mx;
GF_Compositor *compositor;
GF_TraverseState *tr_state = (GF_TraverseState *)rs;
if (is_destroy) {
DestroyBackground(node);
return;
}
gf_node_dirty_clear(node, 0);
bck = (M_Background *)node;
st = (BackgroundStack *) gf_node_get_private(node);
compositor = (GF_Compositor*)st->compositor;
/*may happen in get_bounds*/
if (!tr_state->backgrounds) return;
/*first traverse, bound if needed*/
if (gf_list_find(tr_state->backgrounds, node) < 0) {
gf_list_add(tr_state->backgrounds, node);
assert(gf_list_find(st->reg_stacks, tr_state->backgrounds)==-1);
gf_list_add(st->reg_stacks, tr_state->backgrounds);
/*only bound if we're on top*/
if (gf_list_get(tr_state->backgrounds, 0) == bck) {
if (!bck->isBound) Bindable_SetIsBound(node, 1);
}
/*check streams*/
if (back_use_texture(&bck->frontUrl) && !st->txh_front.is_open) gf_sc_texture_play(&st->txh_front, &bck->frontUrl);
if (back_use_texture(&bck->bottomUrl) && !st->txh_bottom.is_open) gf_sc_texture_play(&st->txh_bottom, &bck->bottomUrl);
if (back_use_texture(&bck->backUrl) && !st->txh_back.is_open) gf_sc_texture_play(&st->txh_back, &bck->backUrl);
if (back_use_texture(&bck->topUrl) && !st->txh_top.is_open) gf_sc_texture_play(&st->txh_top, &bck->topUrl);
if (back_use_texture(&bck->rightUrl) && !st->txh_right.is_open) gf_sc_texture_play(&st->txh_right, &bck->rightUrl);
if (back_use_texture(&bck->leftUrl) && !st->txh_left.is_open) gf_sc_texture_play(&st->txh_left, &bck->leftUrl);
/*in any case don't draw the first time (since the background could have been declared last)*/
gf_sc_invalidate(st->compositor, NULL);
return;
}
if (!bck->isBound) return;
if (tr_state->traversing_mode != TRAVERSE_BINDABLE) {
if (tr_state->traversing_mode == TRAVERSE_SORT) {
gf_mx_copy(st->current_mx, tr_state->model_matrix);
}
return;
}
front_tx = back_gf_sc_texture_enabled(&bck->frontUrl, &st->txh_front);
back_tx = back_gf_sc_texture_enabled(&bck->backUrl, &st->txh_back);
top_tx = back_gf_sc_texture_enabled(&bck->topUrl, &st->txh_top);
bottom_tx = back_gf_sc_texture_enabled(&bck->bottomUrl, &st->txh_bottom);
right_tx = back_gf_sc_texture_enabled(&bck->rightUrl, &st->txh_right);
left_tx = back_gf_sc_texture_enabled(&bck->leftUrl, &st->txh_left);
has_sky = ((bck->skyColor.count>1) && bck->skyAngle.count) ? 1 : 0;
has_ground = ((bck->groundColor.count>1) && bck->groundAngle.count) ? 1 : 0;
bcol.red = bcol.green = bcol.blue = 0;
if (bck->skyColor.count) bcol = bck->skyColor.vals[0];
/*if we clear the main visual clear it entirely - ONLY IF NOT IN LAYER*/
if ((tr_state->visual == compositor->visual) && (tr_state->visual->back_stack == tr_state->backgrounds)) {
visual_3d_clear(tr_state->visual, bcol, FIX_ONE);
if (!has_sky && !has_ground && !front_tx && !back_tx && !top_tx && !bottom_tx && !left_tx && !right_tx) {
return;
}
}
/*undo translation*/
res.x = res.y = res.z = 0;
res.q = FIX_ONE;
gf_mx_apply_vec_4x4(&tr_state->camera->unprojection, &res);
assert(res.q);
res.x = gf_divfix(res.x, res.q);
res.y = gf_divfix(res.y, res.q);
res.z = gf_divfix(res.z, res.q);
/*NB: we don't support local rotation of the background ...*/
/*enable background state (turn off all quality options)*/
visual_3d_set_background_state(tr_state->visual, 1);
if (has_sky) {
GF_Matrix bck_mx;
gf_mx_copy(bck_mx, tr_state->model_matrix);
gf_mx_copy(tr_state->model_matrix, st->current_mx);
if (!st->sky_mesh) {
st->sky_mesh = new_mesh();
back_build_dome(st->sky_mesh, &bck->skyAngle, &bck->skyColor, 0);
}
gf_mx_init(mx);
gf_mx_add_translation(&mx, res.x, res.y, res.z);
/*CHECKME - not sure why, we need to scale less in fixed point otherwise z-far clipping occur - probably some
rounding issues...*/
#ifdef GPAC_FIXED_POINT
scale = (tr_state->camera->z_far/10)*8;
#else
scale = 9*tr_state->camera->z_far/10;
#endif
gf_mx_add_scale(&mx, scale, scale, scale);
gf_mx_add_matrix(&tr_state->model_matrix, &mx);
visual_3d_mesh_paint(tr_state, st->sky_mesh);
gf_mx_copy(tr_state->model_matrix, bck_mx);
}
if (has_ground) {
GF_Matrix bck_mx;
gf_mx_copy(bck_mx, tr_state->model_matrix);
gf_mx_copy(tr_state->model_matrix, st->current_mx);
if (!st->ground_mesh) {
st->ground_mesh = new_mesh();
back_build_dome(st->ground_mesh, &bck->groundAngle, &bck->groundColor, 1);
}
gf_mx_init(mx);
gf_mx_add_translation(&mx, res.x, res.y, res.z);
/*cf above*/
#ifdef GPAC_FIXED_POINT
scale = (tr_state->camera->z_far/100)*70;
#else
scale = 85*tr_state->camera->z_far/100;
#endif
gf_mx_add_scale(&mx, scale, -scale, scale);
gf_mx_add_matrix(&tr_state->model_matrix, &mx);
visual_3d_mesh_paint(tr_state, st->ground_mesh);
gf_mx_copy(tr_state->model_matrix, bck_mx);
}
if (front_tx || back_tx || left_tx || right_tx || top_tx || bottom_tx) {
GF_Matrix bck_mx;
gf_mx_copy(bck_mx, tr_state->model_matrix);
gf_mx_copy(tr_state->model_matrix, st->current_mx);
gf_mx_init(mx);
gf_mx_add_translation(&mx, res.x, res.y, res.z);
#ifdef GPAC_FIXED_POINT
scale = (tr_state->camera->z_far/100)*99;
gf_mx_add_scale(&mx, scale, scale, scale);
#else
gf_mx_add_scale(&mx, tr_state->camera->z_far, tr_state->camera->z_far, tr_state->camera->z_far);
#endif
visual_3d_enable_antialias(tr_state->visual, 1);
gf_mx_add_matrix(&tr_state->model_matrix, &mx);
if (front_tx) back_draw_texture(tr_state, &st->txh_front, st->front_mesh);
if (back_tx) back_draw_texture(tr_state, &st->txh_back, st->back_mesh);
if (top_tx) back_draw_texture(tr_state, &st->txh_top, st->top_mesh);
if (bottom_tx) back_draw_texture(tr_state, &st->txh_bottom, st->bottom_mesh);
if (left_tx) back_draw_texture(tr_state, &st->txh_left, st->left_mesh);
if (right_tx) back_draw_texture(tr_state, &st->txh_right, st->right_mesh);
gf_mx_copy(tr_state->model_matrix, bck_mx);
}
/*enable background state (turn off all quality options)*/
visual_3d_set_background_state(tr_state->visual, 0);
}