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Diffstat (limited to 'indra/llprimitive/llgltfloader.cpp')
| -rw-r--r-- | indra/llprimitive/llgltfloader.cpp | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/indra/llprimitive/llgltfloader.cpp b/indra/llprimitive/llgltfloader.cpp deleted file mode 100644 index 480012699a..0000000000 --- a/indra/llprimitive/llgltfloader.cpp +++ /dev/null @@ -1,404 +0,0 @@ -/** - * @file LLGLTFLoader.cpp - * @brief LLGLTFLoader class implementation - * - * $LicenseInfo:firstyear=2022&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2022, Linden Research, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License only. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA - * $/LicenseInfo$ - */ - -#include "llgltfloader.h" - -// Import & define single-header gltf import/export lib -#define TINYGLTF_IMPLEMENTATION -#define TINYGLTF_USE_CPP14 // default is C++ 11 - -// tinygltf by default loads image files using STB -#define STB_IMAGE_IMPLEMENTATION -// to use our own image loading: -// 1. replace this definition with TINYGLTF_NO_STB_IMAGE -// 2. provide image loader callback with TinyGLTF::SetImageLoader(LoadimageDataFunction LoadImageData, void *user_data) - -// tinygltf saves image files using STB -#define STB_IMAGE_WRITE_IMPLEMENTATION -// similarly, can override with TINYGLTF_NO_STB_IMAGE_WRITE and TinyGLTF::SetImageWriter(fxn, data) - -// Additionally, disable inclusion of STB header files entirely with -// TINYGLTF_NO_INCLUDE_STB_IMAGE -// TINYGLTF_NO_INCLUDE_STB_IMAGE_WRITE -#include "tinygltf/tiny_gltf.h" - - -// TODO: includes inherited from dae loader. Validate / prune - -#include "llsdserialize.h" -#include "lljoint.h" - -#include "llmatrix4a.h" - -#include <boost/regex.hpp> -#include <boost/algorithm/string/replace.hpp> - -static const std::string lod_suffix[LLModel::NUM_LODS] = -{ - "_LOD0", - "_LOD1", - "_LOD2", - "", - "_PHYS", -}; - - -LLGLTFLoader::LLGLTFLoader(std::string filename, - S32 lod, - LLModelLoader::load_callback_t load_cb, - LLModelLoader::joint_lookup_func_t joint_lookup_func, - LLModelLoader::texture_load_func_t texture_load_func, - LLModelLoader::state_callback_t state_cb, - void * opaque_userdata, - JointTransformMap & jointTransformMap, - JointNameSet & jointsFromNodes, - std::map<std::string, std::string> &jointAliasMap, - U32 maxJointsPerMesh, - U32 modelLimit) //, - //bool preprocess) - : LLModelLoader( filename, - lod, - load_cb, - joint_lookup_func, - texture_load_func, - state_cb, - opaque_userdata, - jointTransformMap, - jointsFromNodes, - jointAliasMap, - maxJointsPerMesh ), - //mPreprocessGLTF(preprocess), - mMeshesLoaded(false), - mMaterialsLoaded(false) -{ -} - -LLGLTFLoader::~LLGLTFLoader() {} - -bool LLGLTFLoader::OpenFile(const std::string &filename) -{ - tinygltf::TinyGLTF loader; - std::string error_msg; - std::string warn_msg; - std::string filename_lc(filename); - LLStringUtil::toLower(filename_lc); - - // Load a tinygltf model fom a file. Assumes that the input filename has already been - // been sanitized to one of (.gltf , .glb) extensions, so does a simple find to distinguish. - if (std::string::npos == filename_lc.rfind(".gltf")) - { // file is binary - mGltfLoaded = loader.LoadBinaryFromFile(&mGltfModel, &error_msg, &warn_msg, filename); - } - else - { // file is ascii - mGltfLoaded = loader.LoadASCIIFromFile(&mGltfModel, &error_msg, &warn_msg, filename); - } - - if (!mGltfLoaded) - { - if (!warn_msg.empty()) - LL_WARNS("GLTF_IMPORT") << "gltf load warning: " << warn_msg.c_str() << LL_ENDL; - if (!error_msg.empty()) - LL_WARNS("GLTF_IMPORT") << "gltf load error: " << error_msg.c_str() << LL_ENDL; - return false; - } - - mMeshesLoaded = parseMeshes(); - if (mMeshesLoaded) uploadMeshes(); - - mMaterialsLoaded = parseMaterials(); - if (mMaterialsLoaded) uploadMaterials(); - - return (mMeshesLoaded || mMaterialsLoaded); -} - -bool LLGLTFLoader::parseMeshes() -{ - if (!mGltfLoaded) return false; - - // 2022-04 DJH Volume params from dae example. TODO understand PCODE - LLVolumeParams volume_params; - volume_params.setType(LL_PCODE_PROFILE_SQUARE, LL_PCODE_PATH_LINE); - - for (tinygltf::Mesh mesh : mGltfModel.meshes) - { - LLModel *pModel = new LLModel(volume_params, 0.f); - - if (populateModelFromMesh(pModel, mesh) && - (LLModel::NO_ERRORS == pModel->getStatus()) && - validate_model(pModel)) - { - mModelList.push_back(pModel); - } - else - { - setLoadState(ERROR_MODEL + pModel->getStatus()); - delete(pModel); - return false; - } - } - return true; -} - -bool LLGLTFLoader::populateModelFromMesh(LLModel* pModel, const tinygltf::Mesh &mesh) -{ - pModel->mLabel = mesh.name; - int pos_idx; - tinygltf::Accessor indices_a, positions_a, normals_a, uv0_a, color0_a; - - auto prims = mesh.primitives; - for (auto prim : prims) - { - if (prim.indices >= 0) indices_a = mGltfModel.accessors[prim.indices]; - - pos_idx = (prim.attributes.count("POSITION") > 0) ? prim.attributes.at("POSITION") : -1; - if (pos_idx >= 0) - { - positions_a = mGltfModel.accessors[pos_idx]; - if (TINYGLTF_COMPONENT_TYPE_FLOAT != positions_a.componentType) - continue; - auto positions_bv = mGltfModel.bufferViews[positions_a.bufferView]; - auto positions_buf = mGltfModel.buffers[positions_bv.buffer]; - //auto type = positions_vb. - //if (positions_buf.name - } - -#if 0 - int norm_idx, tan_idx, uv0_idx, uv1_idx, color0_idx, color1_idx; - norm_idx = (prim.attributes.count("NORMAL") > 0) ? prim.attributes.at("NORMAL") : -1; - tan_idx = (prim.attributes.count("TANGENT") > 0) ? prim.attributes.at("TANGENT") : -1; - uv0_idx = (prim.attributes.count("TEXCOORDS_0") > 0) ? prim.attributes.at("TEXCOORDS_0") : -1; - uv1_idx = (prim.attributes.count("TEXCOORDS_1") > 0) ? prim.attributes.at("TEXCOORDS_1") : -1; - color0_idx = (prim.attributes.count("COLOR_0") > 0) ? prim.attributes.at("COLOR_0") : -1; - color1_idx = (prim.attributes.count("COLOR_1") > 0) ? prim.attributes.at("COLOR_1") : -1; -#endif - - if (prim.mode == TINYGLTF_MODE_TRIANGLES) - { - //auto pos = mesh. TODO resume here DJH 2022-04 - } - } - - //pModel->addFace() - return false; -} - -bool LLGLTFLoader::parseMaterials() -{ - if (!mGltfLoaded) return false; - - // fill local texture data structures - mSamplers.clear(); - for (auto in_sampler : mGltfModel.samplers) - { - gltf_sampler sampler; - sampler.magFilter = in_sampler.magFilter > 0 ? in_sampler.magFilter : GL_LINEAR; - sampler.minFilter = in_sampler.minFilter > 0 ? in_sampler.minFilter : GL_LINEAR;; - sampler.wrapS = in_sampler.wrapS; - sampler.wrapT = in_sampler.wrapT; - sampler.name = in_sampler.name; // unused - mSamplers.push_back(sampler); - } - - mImages.clear(); - for (auto in_image : mGltfModel.images) - { - gltf_image image; - image.numChannels = in_image.component; - image.bytesPerChannel = in_image.bits >> 3; // Convert bits to bytes - image.pixelType = in_image.pixel_type; // Maps exactly, i.e. TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE == GL_UNSIGNED_BYTE, etc - image.size = static_cast<U32>(in_image.image.size()); - image.height = in_image.height; - image.width = in_image.width; - image.data = in_image.image.data(); - - if (in_image.as_is) - { - LL_WARNS("GLTF_IMPORT") << "Unsupported image encoding" << LL_ENDL; - return false; - } - - if (image.size != image.height * image.width * image.numChannels * image.bytesPerChannel) - { - LL_WARNS("GLTF_IMPORT") << "Image size error" << LL_ENDL; - return false; - } - - mImages.push_back(image); - } - - mTextures.clear(); - for (auto in_tex : mGltfModel.textures) - { - gltf_texture tex; - tex.imageIdx = in_tex.source; - tex.samplerIdx = in_tex.sampler; - tex.imageUuid.setNull(); - - if (tex.imageIdx >= mImages.size() || tex.samplerIdx >= mSamplers.size()) - { - LL_WARNS("GLTF_IMPORT") << "Texture sampler/image index error" << LL_ENDL; - return false; - } - - mTextures.push_back(tex); - } - - // parse each material - for (tinygltf::Material gltf_material : mGltfModel.materials) - { - gltf_render_material mat; - mat.name = gltf_material.name; - - tinygltf::PbrMetallicRoughness& pbr = gltf_material.pbrMetallicRoughness; - mat.hasPBR = true; // Always true, for now - - mat.baseColor.set(pbr.baseColorFactor.data()); - mat.hasBaseTex = pbr.baseColorTexture.index >= 0; - mat.baseColorTexIdx = pbr.baseColorTexture.index; - mat.baseColorTexCoords = pbr.baseColorTexture.texCoord; - - mat.metalness = pbr.metallicFactor; - mat.roughness = pbr.roughnessFactor; - mat.hasMRTex = pbr.metallicRoughnessTexture.index >= 0; - mat.metalRoughTexIdx = pbr.metallicRoughnessTexture.index; - mat.metalRoughTexCoords = pbr.metallicRoughnessTexture.texCoord; - - mat.normalScale = gltf_material.normalTexture.scale; - mat.hasNormalTex = gltf_material.normalTexture.index >= 0; - mat.normalTexIdx = gltf_material.normalTexture.index; - mat.normalTexCoords = gltf_material.normalTexture.texCoord; - - mat.occlusionScale = gltf_material.occlusionTexture.strength; - mat.hasOcclusionTex = gltf_material.occlusionTexture.index >= 0; - mat.occlusionTexIdx = gltf_material.occlusionTexture.index; - mat.occlusionTexCoords = gltf_material.occlusionTexture.texCoord; - - mat.emissiveColor.set(gltf_material.emissiveFactor.data()); - mat.hasEmissiveTex = gltf_material.emissiveTexture.index >= 0; - mat.emissiveTexIdx = gltf_material.emissiveTexture.index; - mat.emissiveTexCoords = gltf_material.emissiveTexture.texCoord; - - mat.alphaMode = gltf_material.alphaMode; - mat.alphaMask = gltf_material.alphaCutoff; - - if ((mat.hasNormalTex && (mat.normalTexIdx >= mTextures.size())) || - (mat.hasOcclusionTex && (mat.occlusionTexIdx >= mTextures.size())) || - (mat.hasEmissiveTex && (mat.emissiveTexIdx >= mTextures.size())) || - (mat.hasBaseTex && (mat.baseColorTexIdx >= mTextures.size())) || - (mat.hasMRTex && (mat.metalRoughTexIdx >= mTextures.size()))) - { - LL_WARNS("GLTF_IMPORT") << "Texture resource index error" << LL_ENDL; - return false; - } - - if ((mat.hasNormalTex && (mat.normalTexCoords > 2)) || // mesh can have up to 3 sets of UV - (mat.hasOcclusionTex && (mat.occlusionTexCoords > 2)) || - (mat.hasEmissiveTex && (mat.emissiveTexCoords > 2)) || - (mat.hasBaseTex && (mat.baseColorTexCoords > 2)) || - (mat.hasMRTex && (mat.metalRoughTexCoords > 2))) - { - LL_WARNS("GLTF_IMPORT") << "Image texcoord index error" << LL_ENDL; - return false; - } - - mMaterials.push_back(mat); - } - - return true; -} - -// TODO: convert raw vertex buffers to UUIDs -void LLGLTFLoader::uploadMeshes() -{ - llassert(0); -} - -// convert raw image buffers to texture UUIDs & assemble into a render material -void LLGLTFLoader::uploadMaterials() -{ - for (gltf_render_material mat : mMaterials) // Initially 1 material per gltf file, but design for multiple - { - if (mat.hasBaseTex) - { - gltf_texture& gtex = mTextures[mat.baseColorTexIdx]; - if (gtex.imageUuid.isNull()) - { - gtex.imageUuid = imageBufferToTextureUUID(gtex); - } - } - - if (mat.hasMRTex) - { - gltf_texture& gtex = mTextures[mat.metalRoughTexIdx]; - if (gtex.imageUuid.isNull()) - { - gtex.imageUuid = imageBufferToTextureUUID(gtex); - } - } - - if (mat.hasNormalTex) - { - gltf_texture& gtex = mTextures[mat.normalTexIdx]; - if (gtex.imageUuid.isNull()) - { - gtex.imageUuid = imageBufferToTextureUUID(gtex); - } - } - - if (mat.hasOcclusionTex) - { - gltf_texture& gtex = mTextures[mat.occlusionTexIdx]; - if (gtex.imageUuid.isNull()) - { - gtex.imageUuid = imageBufferToTextureUUID(gtex); - } - } - - if (mat.hasEmissiveTex) - { - gltf_texture& gtex = mTextures[mat.emissiveTexIdx]; - if (gtex.imageUuid.isNull()) - { - gtex.imageUuid = imageBufferToTextureUUID(gtex); - } - } - } -} - -LLUUID LLGLTFLoader::imageBufferToTextureUUID(const gltf_texture& tex) -{ - //gltf_image& image = mImages[tex.imageIdx]; - //gltf_sampler& sampler = mSamplers[tex.samplerIdx]; - - // fill an LLSD container with image+sampler data - - // upload texture - - // retrieve UUID - - return LLUUID::null; -} |