Code cleanup to use array.data() rather than &array[0].

These latter can cause MSVC debug asserts if the array is empty. With C++11
we'll be able to do this for std::vector later. This hopefully fixes an assert
in the Cycles subdivision code.

intern/cycles/render/mesh.cpp

@@ -298,17 +298,17 @@ int Mesh::split_vertex(int vertex)
 
 	foreach(Attribute& attr, attributes.attributes) {
 		if(attr.element == ATTR_ELEMENT_VERTEX) {
-			vector<char> tmp(attr.data_sizeof());
-			memcpy(&tmp[0], attr.data() + tmp.size()*vertex, tmp.size());
-			attr.add(&tmp[0]);
+			array<char> tmp(attr.data_sizeof());
+			memcpy(tmp.data(), attr.data() + tmp.size()*vertex, tmp.size());
+			attr.add(tmp.data());
 		}
 	}
 
 	foreach(Attribute& attr, subd_attributes.attributes) {
 		if(attr.element == ATTR_ELEMENT_VERTEX) {
-			vector<char> tmp(attr.data_sizeof());
-			memcpy(&tmp[0], attr.data() + tmp.size()*vertex, tmp.size());
-			attr.add(&tmp[0]);
+			array<char> tmp(attr.data_sizeof());
+			memcpy(tmp.data(), attr.data() + tmp.size()*vertex, tmp.size());
+			attr.add(tmp.data());
 		}
 	}
 
@@ -474,7 +474,7 @@ void Mesh::add_face_normals()
 	bool flip = transform_negative_scaled;
 
 	if(triangles_size) {
-		float3 *verts_ptr = &verts[0];
+		float3 *verts_ptr = verts.data();
 
 		for(size_t i = 0; i < triangles_size; i++) {
 			fN[i] = compute_face_normal(get_triangle(i), verts_ptr);
@@ -568,7 +568,7 @@ void Mesh::pack_normals(Scene *scene, uint *tri_shader, float4 *vnormal)
 	bool last_smooth = false;
 
 	size_t triangles_size = num_triangles();
-	int *shader_ptr = (shader.size())? &shader[0]: NULL;
+	int *shader_ptr = shader.data();
 
 	bool do_transform = transform_applied;
 	Transform ntfm = transform_normal;
@@ -608,7 +608,7 @@ void Mesh::pack_verts(const vector<uint>& tri_prim_index,
 	size_t verts_size = verts.size();
 
 	if(verts_size && subd_faces.size()) {
-		float2 *vert_patch_uv_ptr = &vert_patch_uv[0];
+		float2 *vert_patch_uv_ptr = vert_patch_uv.data();
 
 		for(size_t i = 0; i < verts_size; i++) {
 			tri_patch_uv[i] = vert_patch_uv_ptr[i];
@@ -636,8 +636,8 @@ void Mesh::pack_curves(Scene *scene, float4 *curve_key_co, float4 *curve_data, s
 
 	/* pack curve keys */
 	if(curve_keys_size) {
-		float3 *keys_ptr = &curve_keys[0];
-		float *radius_ptr = &curve_radius[0];
+		float3 *keys_ptr = curve_keys.data();
+		float *radius_ptr = curve_radius.data();
 
 		for(size_t i = 0; i < curve_keys_size; i++)
 			curve_key_co[i] = make_float4(keys_ptr[i].x, keys_ptr[i].y, keys_ptr[i].z, radius_ptr[i]);

intern/cycles/render/mesh_subdivision.cpp

@@ -45,7 +45,7 @@ namespace Far {
 		setNumBaseVertices(refiner, mesh.verts.size());
 		setNumBaseFaces(refiner, mesh.subd_faces.size());
 
-		ccl::Mesh::SubdFace* face = &mesh.subd_faces[0];
+		ccl::Mesh::SubdFace* face = mesh.subd_faces.data();
 
 		for(int i = 0; i < mesh.subd_faces.size(); i++, face++) {
 			setNumBaseFaceVertices(refiner, i, face->num_corners);
@@ -57,7 +57,7 @@ namespace Far {
 	template<>
 	bool TopologyRefinerFactory<ccl::Mesh>::assignComponentTopology(TopologyRefiner& refiner, ccl::Mesh const& mesh)
 	{
-		ccl::Mesh::SubdFace* face = &mesh.subd_faces[0];
+		ccl::Mesh::SubdFace* face = mesh.subd_faces.data()
 
 		for(int i = 0; i < mesh.subd_faces.size(); i++, face++) {
 			IndexArray face_verts = getBaseFaceVertices(refiner, i);
@@ -195,14 +195,14 @@ public:
 			verts[i].value = mesh->verts[i];
 		}
 
-		OsdValue<float3>* src = &verts[0];
+		OsdValue<float3>* src = verts.data()
 		for(int i = 0; i < refiner->GetMaxLevel(); i++) {
 			OsdValue<float3>* dest = src + refiner->GetLevel(i).GetNumVertices();
 			Far::PrimvarRefiner(*refiner).Interpolate(i+1, src, dest);
 			src = dest;
 		}
 
-		patch_table->ComputeLocalPointValues(&verts[0], &verts[num_refiner_verts]);
+		patch_table->ComputeLocalPointValues(verts.data(), &verts[num_refiner_verts]);
 
 		/* create patch map */
 		patch_map = new Far::PatchMap(*patch_table);
@@ -219,7 +219,7 @@ public:
 			attr.resize(num_refiner_verts + num_local_points);
 			attr.flags |= ATTR_FINAL_SIZE;
 
-			char* src = &attr.buffer[0];
+			char* src = attr.buffer.data();
 
 			for(int i = 0; i < refiner->GetMaxLevel(); i++) {
 				char* dest = src + refiner->GetLevel(i).GetNumVertices() * attr.data_sizeof();
@@ -235,12 +235,12 @@ public:
 			}
 
 			if(attr.same_storage(attr.type, TypeDesc::TypeFloat)) {
-				patch_table->ComputeLocalPointValues((OsdValue<float>*)&attr.buffer[0],
-					                                 (OsdValue<float>*)&attr.buffer[num_refiner_verts * attr.data_sizeof()]);
+				patch_table->ComputeLocalPointValues((OsdValue<float>*)attr.buffer.data(),
+					                                 (OsdValue<float>*)(attr.buffer.data() + num_refiner_verts * attr.data_sizeof()));
 			}
 			else {
-				patch_table->ComputeLocalPointValues((OsdValue<float4>*)&attr.buffer[0],
-					                                 (OsdValue<float4>*)&attr.buffer[num_refiner_verts * attr.data_sizeof()]);
+				patch_table->ComputeLocalPointValues((OsdValue<float4>*)attr.buffer.data(),
+					                                 (OsdValue<float4>*)(attr.buffer.data() + num_refiner_verts * attr.data_sizeof()));
 			}
 		}
 		else if(attr.element == ATTR_ELEMENT_CORNER || attr.element == ATTR_ELEMENT_CORNER_BYTE) {

intern/cycles/subd/subd_dice.cpp

@@ -57,7 +57,7 @@ void EdgeDice::reserve(int num_verts)
 
 	Attribute *attr_vN = mesh->attributes.add(ATTR_STD_VERTEX_NORMAL);
 
-	mesh_P = &mesh->verts[0];
+	mesh_P = mesh->verts.data();
 	mesh_N = attr_vN->data_float3();
 }
 

intern/cycles/subd/subd_patch_table.cpp

@@ -214,7 +214,7 @@ void PackedPatchTable::pack(Far::PatchTable* patch_table, int offset)
 	}
 
 	table.resize(total_size());
-	uint* data = &table[0];
+	uint* data = table.data();
 
 	uint* array = data;
 	uint* index = array + num_arrays * PATCH_ARRAY_SIZE;
@@ -259,7 +259,7 @@ void PackedPatchTable::pack(Far::PatchTable* patch_table, int offset)
 
 void PackedPatchTable::copy_adjusting_offsets(uint* dest, int doffset)
 {
-	uint* src = &table[0];
+	uint* src = table.data();
 
 	/* arrays */
 	for(int i = 0; i < num_arrays; i++) {

intern/cycles/subd/subd_patch_table.h

@@ -43,7 +43,7 @@ namespace Far { struct PatchTable; }
 #define PATCH_NODE_SIZE 1
 
 struct PackedPatchTable {
-	vector<uint> table;
+	array<uint> table;
 
 	size_t num_arrays;
 	size_t num_indices;