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fixing OBJ loading crash when there are no normals present

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This commit is contained in:
Eike Decker
2025-08-01 08:40:28 +02:00
parent e7bd177826
commit 121c996c6e
1 changed files with 10 additions and 2 deletions
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12
src/rmodels.c
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@@ -4473,9 +4473,17 @@ static Model LoadOBJ(const char *fileName)
for (int i = 0; i < 3; i++) model.meshes[meshIndex].vertices[localMeshVertexCount*3 + i] = objAttributes.vertices[vertIndex*3 + i];
for (int i = 0; i < 3; i++) model.meshes[meshIndex].normals[localMeshVertexCount*3 + i] = objAttributes.normals[normalIndex*3 + i];
for (int i = 0; i < 2; i++) model.meshes[meshIndex].texcoords[localMeshVertexCount*2 + i] = objAttributes.texcoords[texcordIndex*2 + i];
if (objAttributes.normals != NULL && normalIndex != TINYOBJ_INVALID_INDEX && normalIndex >= 0)
{
for (int i = 0; i < 3; i++) model.meshes[meshIndex].normals[localMeshVertexCount*3 + i] = objAttributes.normals[normalIndex*3 + i];
}
else
{
model.meshes[meshIndex].normals[localMeshVertexCount*3 + 0] = 0.0f;
model.meshes[meshIndex].normals[localMeshVertexCount*3 + 1] = 1.0f;
model.meshes[meshIndex].normals[localMeshVertexCount*3 + 2] = 0.0f;
}
model.meshes[meshIndex].texcoords[localMeshVertexCount*2 + 1] = 1.0f - model.meshes[meshIndex].texcoords[localMeshVertexCount*2 + 1];