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Fix seg fault when no material assigned to object in viewer example.

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Bump version v1.0.2.
This commit is contained in:
Syoyo Fujita
2016-10-24 23:58:33 +09:00
parent 6c6390f034
commit c2474e27ab
3 changed files with 29 additions and 17 deletions
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30
examples/viewer/viewer.cc
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@@ -209,6 +209,9 @@ bool LoadObjAndConvert(float bmin[3], float bmax[3],
printf("# of materials = %d\n", (int)materials.size());
printf("# of shapes = %d\n", (int)shapes.size());
// Append `default` material
materials.push_back(tinyobj::material_t());
// Load diffuse textures
{
for (size_t m = 0; m < materials.size(); m++) {
@@ -248,11 +251,6 @@ bool LoadObjAndConvert(float bmin[3], float bmax[3],
{
for (size_t s = 0; s < shapes.size(); s++) {
size_t current_material_id = 0;
if (shapes[s].mesh.material_ids.size() > 0 && shapes[s].mesh.material_ids.size() > s) {
// Base case
current_material_id = shapes[s].mesh.material_ids[s];
}
DrawObject o;
std::vector<float> vb; // pos(3float), normal(3float), color(3float)
for (size_t f = 0; f < shapes[s].mesh.indices.size() / 3; f++) {
@@ -260,12 +258,16 @@ bool LoadObjAndConvert(float bmin[3], float bmax[3],
tinyobj::index_t idx1 = shapes[s].mesh.indices[3 * f + 1];
tinyobj::index_t idx2 = shapes[s].mesh.indices[3 * f + 2];
current_material_id = shapes[s].mesh.material_ids[f];
int current_material_id = shapes[s].mesh.material_ids[f];
if (current_material_id >= materials.size()) {
std::cerr << "Invalid material index: " << current_material_id << std::endl;
if ((current_material_id < 0) || (current_material_id >= static_cast<int>(materials.size()))) {
// Invaid material ID. Use default material.
current_material_id = materials.size() - 1; // Default material is added to the last item in `materials`.
}
//if (current_material_id >= materials.size()) {
// std::cerr << "Invalid material index: " << current_material_id << std::endl;
//}
//
float diffuse[3];
for (size_t i = 0; i < 3; i++) {
diffuse[i] = materials[current_material_id].diffuse[i];
@@ -364,7 +366,15 @@ bool LoadObjAndConvert(float bmin[3], float bmax[3],
o.vb = 0;
o.numTriangles = 0;
o.material_id = current_material_id;
// OpenGL viewer does not support texturing with per-face material.
if (shapes[s].mesh.material_ids.size() > 0 && shapes[s].mesh.material_ids.size() > s) {
// Base case
o.material_id = shapes[s].mesh.material_ids[s];
} else {
o.material_id = materials.size() - 1; // = ID for default material.
}
if (vb.size() > 0) {
glGenBuffers(1, &o.vb);
glBindBuffer(GL_ARRAY_BUFFER, o.vb);