void VulkanExampleBase::loadMesh(
std::string filename,
vkMeshLoader::MeshBuffer * meshBuffer,
std::vector<vkMeshLoader::VertexLayout> vertexLayout,
float scale)
{
VulkanMeshLoader *mesh = new VulkanMeshLoader();
#if defined(__ANDROID__)
mesh->assetManager = androidApp->activity->assetManager;
#endif
mesh->LoadMesh(filename);
assert(mesh->m_Entries.size() > 0);
mesh->createVulkanBuffers(
device,
deviceMemoryProperties,
meshBuffer,
vertexLayout,
scale);
meshBuffer->dim = mesh->dim.size;
delete(mesh);
}
// Load a mesh based on data read via assimp
// The other example will use the VulkanMesh loader which has some additional functionality for loading meshes
void loadMesh()
{
VulkanMeshLoader *meshLoader = new VulkanMeshLoader();
meshLoader->LoadMesh("./../data/models/voyager/voyager.obj");
// Generate vertex buffer
float scale = 1.0f;
std::vector<Vertex> vertexBuffer;
// Iterate through all meshes in the file
// and extract the vertex information used in this demo
for (uint32_t m = 0; m < meshLoader->m_Entries.size(); m++)
{
for (uint32_t i = 0; i < meshLoader->m_Entries[m].Vertices.size(); i++)
{
Vertex vertex;
vertex.pos = meshLoader->m_Entries[m].Vertices[i].m_pos * scale;
vertex.normal = meshLoader->m_Entries[m].Vertices[i].m_normal;
vertex.uv = meshLoader->m_Entries[m].Vertices[i].m_tex;
vertex.color = meshLoader->m_Entries[m].Vertices[i].m_color;
vertexBuffer.push_back(vertex);
}
}
uint32_t vertexBufferSize = vertexBuffer.size() * sizeof(Vertex);
// Generate index buffer from loaded mesh file
std::vector<uint32_t> indexBuffer;
for (uint32_t m = 0; m < meshLoader->m_Entries.size(); m++)
{
uint32_t indexBase = indexBuffer.size();
for (uint32_t i = 0; i < meshLoader->m_Entries[m].Indices.size(); i++)
{
indexBuffer.push_back(meshLoader->m_Entries[m].Indices[i] + indexBase);
}
}
uint32_t indexBufferSize = indexBuffer.size() * sizeof(uint32_t);
mesh.indices.count = indexBuffer.size();
// Generate vertex buffer
createBuffer(
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
vertexBufferSize,
vertexBuffer.data(),
&mesh.vertices.buf,
&mesh.vertices.mem);
// Generate index buffer
createBuffer(
VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
indexBufferSize,
indexBuffer.data(),
&mesh.indices.buf,
&mesh.indices.mem);
delete(meshLoader);
}
