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don't use copy when iterating over primitives

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This commit is contained in:
Nick Fisher
2021-09-21 16:30:22 +08:00
parent aca72e1576
commit 02a5fc5661
2 changed files with 49 additions and 19 deletions
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64
ios/src/morph/GPUMorphHelper.cpp
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@@ -49,7 +49,7 @@ namespace gltfio {
free(mem);
};
GPUMorphHelper::GPUMorphHelper(FFilamentAsset *asset, const char* meshName, const char* entityName, const char* materialInstanceName) : mAsset(asset) {
GPUMorphHelper::GPUMorphHelper(FFilamentAsset *asset, const char* meshName, const char* entityName, int primitiveIndex) : mAsset(asset) {
cgltf_size num_primitives = 0;
NodeMap &sourceNodes = asset->isInstanced() ? asset->mInstances[0]->nodeMap
@@ -70,6 +70,14 @@ namespace gltfio {
}
}
}
auto materialInstances = mAsset->getMaterialInstances();
std::cout << "Listing all material instances in asset" << std::endl;
for(int i = 0; i < mAsset->getMaterialInstanceCount(); i++) {
const char* name = materialInstances[i]->getName();
std::cout << "Material : " << name << std::endl;
}
createTextures();
}
@@ -85,8 +93,13 @@ namespace gltfio {
auto materialInstances = mAsset->getMaterialInstances();
auto &engine = *(mAsset->mEngine);
for (auto &entry : mMorphTable) {
for (auto prim : entry.second.primitives) {
for (auto&& entry : mMorphTable) {
std::vector<GltfPrimitive>& prims = (std::vector<GltfPrimitive>&)entry.second.primitives;
for(int i = 0; i < prims.size(); i++) {
// prims.at(i).texture = nullptr;
auto& prim = prims.at(i);
// }
// for (auto&& prim : entry.second.primitives) {
// for a single morph target, each vertex will be assigned 2 pixels, corresponding to a position vec3 and a normal vec3
// these two vectors will be laid out adjacent in memory
// the total texture "width" is the total number of these pixels
@@ -119,15 +132,17 @@ namespace gltfio {
offset += int(target.bufferSize / sizeof(float));
}
}
prim.texture = Texture::Builder()
.width(textureWidth) //
.height(1)
.depth(prim.numTargets)
.sampler(Texture::Sampler::SAMPLER_2D_ARRAY)
.format(Texture::InternalFormat::RGB32F)
.levels(0x01)
.build(engine);
Texture* texture = Texture::Builder()
.width(textureWidth) //
.height(1)
.depth(prim.numTargets)
.sampler(Texture::Sampler::SAMPLER_2D_ARRAY)
.format(Texture::InternalFormat::RGB32F)
.levels(0x01)
.build(engine);
prim.texture = texture; //std::unique_ptr<Texture>(texture);
Texture::PixelBufferDescriptor descriptor(
textureBuffer,
@@ -140,9 +155,10 @@ namespace gltfio {
for(int i = 0; i < mAsset->getMaterialInstanceCount(); i++) {
const char* name = materialInstances[i]->getName();
std::cout << name << std::endl;
if(strcmp(name, prim.materialName) == 0) {
prim.materialInstance = materialInstances[i];
std::cout << "Found material instance for primitive under name : " << name << std::endl;
prim.materialInstance = materialInstances[i]; //std::unique_ptr<MaterialInstance>(materialInstances[i]);
break;
}
}
@@ -162,9 +178,21 @@ namespace gltfio {
}
void GPUMorphHelper::applyWeights(float const *weights, size_t count, int primitiveIndex) noexcept {
auto materialInstance = mAsset->getMaterialInstances()[primitiveIndex];
materialInstance->setParameter("morphTargetWeights", weights, count);
// assert(count <= numTargets);
std::cout << "Applying " << count << " weights to primitive index " << primitiveIndex << std::endl;
for (auto &entry : mMorphTable) {
int i = 0 ;
for (auto &prim : entry.second.primitives) {
if(i == primitiveIndex) {
if(!prim.materialInstance) {
std::cout << "Error, couldn't find material instance for primitive under name " << prim.materialName << std::endl;
} else {
prim.materialInstance->setParameter("morphTargetWeights", weights, count);
break;
}
}
i++;
}
}
}
void
@@ -181,7 +209,7 @@ namespace gltfio {
morphHelperPrim.materialName = prim.material->name;
morphHelperPrim.numTargets = prim.targets_count;
morphHelperPrim.numVertices = vertexBuffer->getVertexCount();
cgltf_size maxIndex = 0;
cgltf_size maxIndex = 0;
for(int i = 0; i < prim.indices->count; i++) {
maxIndex = std::max(cgltf_accessor_read_index(prim.indices, i), maxIndex);
}

4
ios/src/morph/GPUMorphHelper.h
View File

@@ -58,12 +58,14 @@ namespace gltfio {
struct GltfPrimitive {
filament::VertexBuffer *vertexBuffer;
// const std::unique_ptr<Texture> texture;
Texture* texture;
std::vector <GltfTarget> targets; // TODO: flatten this?
const char* materialName;
cgltf_size numTargets = 0;
cgltf_size numVertices = 0;
MaterialInstance* materialInstance = nullptr;
//const std::unique_ptr<MaterialInstance> materialInstance;
MaterialInstance* materialInstance;
};
struct TableEntry {