RuiFPB/tyra-linux
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skip not used materials

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This commit is contained in:
h4570
2022-08-10 22:42:27 +02:00
parent 0a2d19b2d0
commit 5f5f28b3fb
6 changed files with 83 additions and 65 deletions
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engine/src/loaders/3d/obj_loader/obj_loader.cpp
+42 -48
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@@ -92,12 +92,11 @@ MeshBuilderData* ObjLoader::load(const char* fullpath,
"mtlib in obj file");
if (i == 1) {
auto scanResult = scan(shapes, materials);
addOutputMaterialsAndFrames(result, attrib, shapes, materials,
options.animation.count);
options.animation.count, scanResult);
}
scan(result, attrib, shapes, materials, i - 1);
importFrame(result, attrib, shapes, materials, i - 1, options.scale,
options.flipUVs, options.animation.count);
}
@@ -105,10 +104,38 @@ MeshBuilderData* ObjLoader::load(const char* fullpath,
return result;
}
std::vector<MaterialVertexCount> ObjLoader::scan(
const std::vector<tinyobj::shape_t>& shapes,
const std::vector<tinyobj::material_t>& materials) {
std::vector<MaterialVertexCount> result;
for (size_t i = 0; i < materials.size(); i++) {
MaterialVertexCount counter = {i, 0};
result.push_back(counter);
}
for (size_t s = 0; s < shapes.size(); s++) {
const auto& mesh = shapes[s].mesh;
for (size_t f = 0; f < mesh.num_face_vertices.size(); f++) {
const auto& materialId = mesh.material_ids[f];
const auto& vertCountPerFace = size_t(mesh.num_face_vertices[f]);
TYRA_ASSERT(vertCountPerFace == 3,
"TinyObjLoader should triangulate mesh, internal error!");
result[materialId].count += vertCountPerFace;
}
}
return result;
}
void ObjLoader::addOutputMaterialsAndFrames(
MeshBuilderData* output, const tinyobj::attrib_t& attrib,
const std::vector<tinyobj::shape_t>& shapes,
const std::vector<tinyobj::material_t>& materials, const u16& framesCount) {
const std::vector<tinyobj::material_t>& materials, const u16& framesCount,
std::vector<MaterialVertexCount>& materialVertexCounts) {
if (attrib.texcoords.size()) output->textureCoordsEnabled = true;
if (attrib.normals.size()) output->normalsEnabled = true;
@@ -129,6 +156,17 @@ void ObjLoader::addOutputMaterialsAndFrames(
for (size_t j = 0; j < framesCount; j++) {
auto* frame = new MeshBuilderMaterialFrameData();
const auto& counter = materialVertexCounts[i];
frame->count = counter.count;
frame->vertices = new Vec4[counter.count];
if (output->textureCoordsEnabled)
frame->textureCoords = new Vec4[counter.count];
if (output->normalsEnabled) frame->normals = new Vec4[counter.count];
material->frames.push_back(frame);
}
@@ -136,50 +174,6 @@ void ObjLoader::addOutputMaterialsAndFrames(
}
}
void ObjLoader::scan(MeshBuilderData* output, const tinyobj::attrib_t& attrib,
const std::vector<tinyobj::shape_t>& shapes,
const std::vector<tinyobj::material_t>& materials,
const u16& frameIndex) {
struct MaterialVertexCount {
size_t materialId;
int count;
};
std::vector<MaterialVertexCount> materialVertexCounts;
for (size_t i = 0; i < materials.size(); i++) {
MaterialVertexCount counter = {i, 0};
materialVertexCounts.push_back(counter);
}
for (size_t s = 0; s < shapes.size(); s++) {
const auto& mesh = shapes[s].mesh;
for (size_t f = 0; f < mesh.num_face_vertices.size(); f++) {
const auto& materialId = mesh.material_ids[f];
const auto& vertCountPerFace = size_t(mesh.num_face_vertices[f]);
TYRA_ASSERT(vertCountPerFace == 3,
"TinyObjLoader should triangulate mesh, internal error!");
materialVertexCounts[materialId].count += vertCountPerFace;
}
}
for (size_t i = 0; i < materials.size(); i++) {
const auto& counter = materialVertexCounts[i];
auto* outFrame = output->materials[i]->frames[frameIndex];
outFrame->count = counter.count;
outFrame->vertices = new Vec4[counter.count];
if (output->textureCoordsEnabled)
outFrame->textureCoords = new Vec4[counter.count];
if (output->normalsEnabled) outFrame->normals = new Vec4[counter.count];
}
}
void ObjLoader::importFrame(MeshBuilderData* output,
const tinyobj::attrib_t& attrib,
const std::vector<tinyobj::shape_t>& shapes,