Пример #1
0
/* Create uv map attributes. */
static void attr_create_uv_map(Scene *scene,
                               Mesh *mesh,
                               BL::Mesh b_mesh,
                               const vector<int>& nverts)
{
	if(b_mesh.tessface_uv_textures.length() != 0) {
		BL::Mesh::tessface_uv_textures_iterator l;

		for(b_mesh.tessface_uv_textures.begin(l); l != b_mesh.tessface_uv_textures.end(); ++l) {
			bool active_render = l->active_render();
			AttributeStandard std = (active_render)? ATTR_STD_UV: ATTR_STD_NONE;
			ustring name = ustring(l->name().c_str());

			/* UV map */
			if(mesh->need_attribute(scene, name) || mesh->need_attribute(scene, std)) {
				Attribute *attr;

				if(active_render)
					attr = mesh->attributes.add(std, name);
				else
					attr = mesh->attributes.add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CORNER);

				BL::MeshTextureFaceLayer::data_iterator t;
				float3 *fdata = attr->data_float3();
				size_t i = 0;

				for(l->data.begin(t); t != l->data.end(); ++t, ++i) {
					fdata[0] = get_float3(t->uv1());
					fdata[1] = get_float3(t->uv2());
					fdata[2] = get_float3(t->uv3());
					fdata += 3;

					if(nverts[i] == 4) {
						fdata[0] = get_float3(t->uv1());
						fdata[1] = get_float3(t->uv3());
						fdata[2] = get_float3(t->uv4());
						fdata += 3;
					}
				}
			}

			/* UV tangent */
			std = (active_render)? ATTR_STD_UV_TANGENT: ATTR_STD_NONE;
			name = ustring((string(l->name().c_str()) + ".tangent").c_str());

			if(mesh->need_attribute(scene, name) || (active_render && mesh->need_attribute(scene, std))) {
				std = (active_render)? ATTR_STD_UV_TANGENT_SIGN: ATTR_STD_NONE;
				name = ustring((string(l->name().c_str()) + ".tangent_sign").c_str());
				bool need_sign = (mesh->need_attribute(scene, name) || mesh->need_attribute(scene, std));

				mikk_compute_tangents(b_mesh, &(*l), mesh, nverts, need_sign, active_render);
			}
		}
	}
	else if(mesh->need_attribute(scene, ATTR_STD_UV_TANGENT)) {
		bool need_sign = mesh->need_attribute(scene, ATTR_STD_UV_TANGENT_SIGN);
		mikk_compute_tangents(b_mesh, NULL, mesh, nverts, need_sign, true);
	}
}
Пример #2
0
static void create_mesh(Scene *scene, Mesh *mesh, BL::Mesh b_mesh, const vector<uint>& used_shaders)
{
	/* create vertices */
	BL::Mesh::vertices_iterator v;

	for(b_mesh.vertices.begin(v); v != b_mesh.vertices.end(); ++v)
		mesh->verts.push_back(get_float3(v->co()));

	/* create vertex normals */
	Attribute *attr_N = mesh->attributes.add(Attribute::STD_VERTEX_NORMAL);
	float3 *N = attr_N->data_float3();

	for(b_mesh.vertices.begin(v); v != b_mesh.vertices.end(); ++v, ++N)
		*N= get_float3(v->normal());

	/* create faces */
	BL::Mesh::faces_iterator f;
	vector<int> nverts;

	for(b_mesh.faces.begin(f); f != b_mesh.faces.end(); ++f) {
		int4 vi = get_int4(f->vertices_raw());
		int n = (vi[3] == 0)? 3: 4;
		int mi = clamp(f->material_index(), 0, used_shaders.size()-1);
		int shader = used_shaders[mi];
		bool smooth = f->use_smooth();

		mesh->add_triangle(vi[0], vi[1], vi[2], shader, smooth);

		if(n == 4)
			mesh->add_triangle(vi[0], vi[2], vi[3], shader, smooth);

		nverts.push_back(n);
	}

	/* create generated coordinates. todo: we should actually get the orco
	   coordinates from modifiers, for now we use texspace loc/size which
	   is available in the api. */
	if(mesh_need_attribute(scene, mesh, Attribute::STD_GENERATED)) {
		Attribute *attr = mesh->attributes.add(Attribute::STD_GENERATED);
		float3 loc = get_float3(b_mesh.texspace_location());
		float3 size = get_float3(b_mesh.texspace_size());

		if(size.x != 0.0f) size.x = 0.5f/size.x;
		if(size.y != 0.0f) size.y = 0.5f/size.y;
		if(size.z != 0.0f) size.z = 0.5f/size.z;

		loc = loc*size - make_float3(0.5f, 0.5f, 0.5f);

		float3 *fdata = attr->data_float3();
		BL::Mesh::vertices_iterator v;
		size_t i = 0;

		for(b_mesh.vertices.begin(v); v != b_mesh.vertices.end(); ++v)
			fdata[i++] = get_float3(v->co())*size - loc;
	}

	/* create vertex color attributes */
	{
		BL::Mesh::vertex_colors_iterator l;

		for(b_mesh.vertex_colors.begin(l); l != b_mesh.vertex_colors.end(); ++l) {
			if(!mesh_need_attribute(scene, mesh, ustring(l->name().c_str())))
				continue;

			Attribute *attr = mesh->attributes.add(
				ustring(l->name().c_str()), TypeDesc::TypeColor, Attribute::CORNER);

			BL::MeshColorLayer::data_iterator c;
			float3 *fdata = attr->data_float3();
			size_t i = 0;

			for(l->data.begin(c); c != l->data.end(); ++c, ++i) {
				fdata[0] = color_srgb_to_scene_linear(get_float3(c->color1()));
				fdata[1] = color_srgb_to_scene_linear(get_float3(c->color2()));
				fdata[2] = color_srgb_to_scene_linear(get_float3(c->color3()));

				if(nverts[i] == 4) {
					fdata[3] = fdata[0];
					fdata[4] = fdata[2];
					fdata[5] = color_srgb_to_scene_linear(get_float3(c->color4()));
					fdata += 6;
				}
				else
					fdata += 3;
			}
		}
	}

	/* create uv map attributes */
	{
		BL::Mesh::uv_textures_iterator l;

		for(b_mesh.uv_textures.begin(l); l != b_mesh.uv_textures.end(); ++l) {
			Attribute::Standard std = (l->active_render())? Attribute::STD_UV: Attribute::STD_NONE;
			ustring name = ustring(l->name().c_str());

			if(!(mesh_need_attribute(scene, mesh, name) || mesh_need_attribute(scene, mesh, std)))
				continue;

			Attribute *attr;

			if(l->active_render())
				attr = mesh->attributes.add(std, name);
			else
				attr = mesh->attributes.add(name, TypeDesc::TypePoint, Attribute::CORNER);

			BL::MeshTextureFaceLayer::data_iterator t;
			float3 *fdata = attr->data_float3();
			size_t i = 0;

			for(l->data.begin(t); t != l->data.end(); ++t, ++i) {
				fdata[0] =  get_float3(t->uv1());
				fdata[1] =  get_float3(t->uv2());
				fdata[2] =  get_float3(t->uv3());
				fdata += 3;

				if(nverts[i] == 4) {
					fdata[0] =  get_float3(t->uv1());
					fdata[1] =  get_float3(t->uv3());
					fdata[2] =  get_float3(t->uv4());
					fdata += 3;
				}
			}
		}
	}
}
Пример #3
0
static void create_mesh(Scene *scene, Mesh *mesh, BL::Mesh b_mesh, const vector<uint>& used_shaders)
{
	/* count vertices and faces */
	int numverts = b_mesh.vertices.length();
	int numfaces = b_mesh.tessfaces.length();
	int numtris = 0;
	bool use_loop_normals = b_mesh.use_auto_smooth();

	BL::Mesh::vertices_iterator v;
	BL::Mesh::tessfaces_iterator f;

	for(b_mesh.tessfaces.begin(f); f != b_mesh.tessfaces.end(); ++f) {
		int4 vi = get_int4(f->vertices_raw());
		numtris += (vi[3] == 0)? 1: 2;
	}

	/* reserve memory */
	mesh->reserve(numverts, numtris, 0, 0);

	/* create vertex coordinates and normals */
	int i = 0;
	for(b_mesh.vertices.begin(v); v != b_mesh.vertices.end(); ++v, ++i)
		mesh->verts[i] = get_float3(v->co());

	Attribute *attr_N = mesh->attributes.add(ATTR_STD_VERTEX_NORMAL);
	float3 *N = attr_N->data_float3();

	for(b_mesh.vertices.begin(v); v != b_mesh.vertices.end(); ++v, ++N)
		*N = get_float3(v->normal());
	N = attr_N->data_float3();

	/* create generated coordinates from undeformed coordinates */
	if(mesh->need_attribute(scene, ATTR_STD_GENERATED)) {
		Attribute *attr = mesh->attributes.add(ATTR_STD_GENERATED);

		float3 loc, size;
		mesh_texture_space(b_mesh, loc, size);

		float3 *generated = attr->data_float3();
		size_t i = 0;

		for(b_mesh.vertices.begin(v); v != b_mesh.vertices.end(); ++v)
			generated[i++] = get_float3(v->undeformed_co())*size - loc;
	}

	/* create faces */
	vector<int> nverts(numfaces);
	int fi = 0, ti = 0;

	for(b_mesh.tessfaces.begin(f); f != b_mesh.tessfaces.end(); ++f, ++fi) {
		int4 vi = get_int4(f->vertices_raw());
		int n = (vi[3] == 0)? 3: 4;
		int mi = clamp(f->material_index(), 0, used_shaders.size()-1);
		int shader = used_shaders[mi];
		bool smooth = f->use_smooth();

		/* split vertices if normal is different
		 *
		 * note all vertex attributes must have been set here so we can split
		 * and copy attributes in split_vertex without remapping later */
		if(use_loop_normals) {
			BL::Array<float, 12> loop_normals = f->split_normals();

			for(int i = 0; i < n; i++) {
				float3 loop_N = make_float3(loop_normals[i * 3], loop_normals[i * 3 + 1], loop_normals[i * 3 + 2]);

				if(N[vi[i]] != loop_N) {
					int new_vi = mesh->split_vertex(vi[i]);

					/* set new normal and vertex index */
					N = attr_N->data_float3();
					N[new_vi] = loop_N;
					vi[i] = new_vi;
				}
			}
		}

		/* create triangles */
		if(n == 4) {
			if(is_zero(cross(mesh->verts[vi[1]] - mesh->verts[vi[0]], mesh->verts[vi[2]] - mesh->verts[vi[0]])) ||
				is_zero(cross(mesh->verts[vi[2]] - mesh->verts[vi[0]], mesh->verts[vi[3]] - mesh->verts[vi[0]]))) {
				mesh->set_triangle(ti++, vi[0], vi[1], vi[3], shader, smooth);
				mesh->set_triangle(ti++, vi[2], vi[3], vi[1], shader, smooth);
			}
			else {
				mesh->set_triangle(ti++, vi[0], vi[1], vi[2], shader, smooth);
				mesh->set_triangle(ti++, vi[0], vi[2], vi[3], shader, smooth);
			}
		}
		else
			mesh->set_triangle(ti++, vi[0], vi[1], vi[2], shader, smooth);

		nverts[fi] = n;
	}

	/* create vertex color attributes */
	{
		BL::Mesh::tessface_vertex_colors_iterator l;

		for(b_mesh.tessface_vertex_colors.begin(l); l != b_mesh.tessface_vertex_colors.end(); ++l) {
			if(!mesh->need_attribute(scene, ustring(l->name().c_str())))
				continue;

			Attribute *attr = mesh->attributes.add(
				ustring(l->name().c_str()), TypeDesc::TypeColor, ATTR_ELEMENT_CORNER);

			BL::MeshColorLayer::data_iterator c;
			float3 *fdata = attr->data_float3();
			size_t i = 0;

			for(l->data.begin(c); c != l->data.end(); ++c, ++i) {
				fdata[0] = color_srgb_to_scene_linear(get_float3(c->color1()));
				fdata[1] = color_srgb_to_scene_linear(get_float3(c->color2()));
				fdata[2] = color_srgb_to_scene_linear(get_float3(c->color3()));

				if(nverts[i] == 4) {
					fdata[3] = fdata[0];
					fdata[4] = fdata[2];
					fdata[5] = color_srgb_to_scene_linear(get_float3(c->color4()));
					fdata += 6;
				}
				else
					fdata += 3;
			}
		}
	}

	/* create uv map attributes */
	{
		BL::Mesh::tessface_uv_textures_iterator l;

		for(b_mesh.tessface_uv_textures.begin(l); l != b_mesh.tessface_uv_textures.end(); ++l) {
			bool active_render = l->active_render();
			AttributeStandard std = (active_render)? ATTR_STD_UV: ATTR_STD_NONE;
			ustring name = ustring(l->name().c_str());

			/* UV map */
			if(mesh->need_attribute(scene, name) || mesh->need_attribute(scene, std)) {
				Attribute *attr;

				if(active_render)
					attr = mesh->attributes.add(std, name);
				else
					attr = mesh->attributes.add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CORNER);

				BL::MeshTextureFaceLayer::data_iterator t;
				float3 *fdata = attr->data_float3();
				size_t i = 0;

				for(l->data.begin(t); t != l->data.end(); ++t, ++i) {
					fdata[0] =  get_float3(t->uv1());
					fdata[1] =  get_float3(t->uv2());
					fdata[2] =  get_float3(t->uv3());
					fdata += 3;

					if(nverts[i] == 4) {
						fdata[0] =  get_float3(t->uv1());
						fdata[1] =  get_float3(t->uv3());
						fdata[2] =  get_float3(t->uv4());
						fdata += 3;
					}
				}
			}

			/* UV tangent */
			std = (active_render)? ATTR_STD_UV_TANGENT: ATTR_STD_NONE;
			name = ustring((string(l->name().c_str()) + ".tangent").c_str());

			if(mesh->need_attribute(scene, name) || (active_render && mesh->need_attribute(scene, std))) {
				std = (active_render)? ATTR_STD_UV_TANGENT_SIGN: ATTR_STD_NONE;
				name = ustring((string(l->name().c_str()) + ".tangent_sign").c_str());
				bool need_sign = (mesh->need_attribute(scene, name) || mesh->need_attribute(scene, std));

				mikk_compute_tangents(b_mesh, *l, mesh, nverts, need_sign, active_render);
			}
		}
	}

	/* for volume objects, create a matrix to transform from object space to
	 * mesh texture space. this does not work with deformations but that can
	 * probably only be done well with a volume grid mapping of coordinates */
	if(mesh->need_attribute(scene, ATTR_STD_GENERATED_TRANSFORM)) {
		Attribute *attr = mesh->attributes.add(ATTR_STD_GENERATED_TRANSFORM);
		Transform *tfm = attr->data_transform();

		float3 loc, size;
		mesh_texture_space(b_mesh, loc, size);

		*tfm = transform_translate(-loc)*transform_scale(size);
	}
}
Пример #4
0
/* Create uv map attributes. */
static void attr_create_uv_map(Scene *scene,
                               Mesh *mesh,
                               BL::Mesh& b_mesh,
                               const vector<int>& nverts,
                               const vector<int>& face_flags,
                               bool subdivision,
                               bool subdivide_uvs)
{
	if(subdivision) {
		BL::Mesh::uv_layers_iterator l;
		int i = 0;

		for(b_mesh.uv_layers.begin(l); l != b_mesh.uv_layers.end(); ++l, ++i) {
			bool active_render = b_mesh.uv_textures[i].active_render();
			AttributeStandard std = (active_render)? ATTR_STD_UV: ATTR_STD_NONE;
			ustring name = ustring(l->name().c_str());

			/* UV map */
			if(mesh->need_attribute(scene, name) || mesh->need_attribute(scene, std)) {
				Attribute *attr;

				if(active_render)
					attr = mesh->subd_attributes.add(std, name);
				else
					attr = mesh->subd_attributes.add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CORNER);

				if(subdivide_uvs) {
					attr->flags |= ATTR_SUBDIVIDED;
				}

				BL::Mesh::polygons_iterator p;
				float3 *fdata = attr->data_float3();

				for(b_mesh.polygons.begin(p); p != b_mesh.polygons.end(); ++p) {
					int n = p->loop_total();
					for(int j = 0; j < n; j++) {
						*(fdata++) = get_float3(l->data[p->loop_start() + j].uv());
					}
				}
			}
		}
	}
	else if(b_mesh.tessface_uv_textures.length() != 0) {
		BL::Mesh::tessface_uv_textures_iterator l;

		for(b_mesh.tessface_uv_textures.begin(l); l != b_mesh.tessface_uv_textures.end(); ++l) {
			bool active_render = l->active_render();
			AttributeStandard std = (active_render)? ATTR_STD_UV: ATTR_STD_NONE;
			ustring name = ustring(l->name().c_str());

			/* UV map */
			if(mesh->need_attribute(scene, name) || mesh->need_attribute(scene, std)) {
				Attribute *attr;

				if(active_render)
					attr = mesh->attributes.add(std, name);
				else
					attr = mesh->attributes.add(name, TypeDesc::TypePoint, ATTR_ELEMENT_CORNER);

				BL::MeshTextureFaceLayer::data_iterator t;
				float3 *fdata = attr->data_float3();
				size_t i = 0;

				for(l->data.begin(t); t != l->data.end(); ++t, ++i) {
					int tri_a[3], tri_b[3];
					face_split_tri_indices(nverts[i], face_flags[i], tri_a, tri_b);

					float3 uvs[4];
					uvs[0] = get_float3(t->uv1());
					uvs[1] = get_float3(t->uv2());
					uvs[2] = get_float3(t->uv3());
					if(nverts[i] == 4) {
						uvs[3] = get_float3(t->uv4());
					}

					fdata[0] = uvs[tri_a[0]];
					fdata[1] = uvs[tri_a[1]];
					fdata[2] = uvs[tri_a[2]];
					fdata += 3;

					if(nverts[i] == 4) {
						fdata[0] = uvs[tri_b[0]];
						fdata[1] = uvs[tri_b[1]];
						fdata[2] = uvs[tri_b[2]];
						fdata += 3;
					}
				}
			}

			/* UV tangent */
			std = (active_render)? ATTR_STD_UV_TANGENT: ATTR_STD_NONE;
			name = ustring((string(l->name().c_str()) + ".tangent").c_str());

			if(mesh->need_attribute(scene, name) || (active_render && mesh->need_attribute(scene, std))) {
				std = (active_render)? ATTR_STD_UV_TANGENT_SIGN: ATTR_STD_NONE;
				name = ustring((string(l->name().c_str()) + ".tangent_sign").c_str());
				bool need_sign = (mesh->need_attribute(scene, name) || mesh->need_attribute(scene, std));

				mikk_compute_tangents(b_mesh,
				                      &(*l),
				                      mesh,
				                      nverts,
				                      face_flags,
				                      need_sign,
				                      active_render);
			}
		}
	}
	else if(mesh->need_attribute(scene, ATTR_STD_UV_TANGENT)) {
		bool need_sign = mesh->need_attribute(scene, ATTR_STD_UV_TANGENT_SIGN);
		mikk_compute_tangents(b_mesh,
		                      NULL,
		                      mesh,
		                      nverts,
		                      face_flags,
		                      need_sign,
		                      true);
	}
}