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Diffstat (limited to 'indra/newview/gltf/buffer_util.h')
| -rw-r--r-- | indra/newview/gltf/buffer_util.h | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/indra/newview/gltf/buffer_util.h b/indra/newview/gltf/buffer_util.h new file mode 100644 index 0000000000..4e6f5901e7 --- /dev/null +++ b/indra/newview/gltf/buffer_util.h @@ -0,0 +1,402 @@ +#pragma once + +/** + * @file buffer_util.inl + * @brief LL GLTF Implementation + * + * $LicenseInfo:firstyear=2024&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2024, 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 + * $/LicenseInfo$ + */ + +// inline template implementations for copying data out of GLTF buffers +// DO NOT include from header files to avoid the need to rebuild the whole project +// whenever we add support for more types + +#ifdef _MSC_VER +#define LL_FUNCSIG __FUNCSIG__ +#else +#define LL_FUNCSIG __PRETTY_FUNCTION__ +#endif + +namespace LL +{ + namespace GLTF + { + // copy one Scalar from src to dst + template<class S, class T> + static void copyScalar(S* src, T& dst) + { + LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL; + } + + // copy one vec2 from src to dst + template<class S, class T> + static void copyVec2(S* src, T& dst) + { + LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL; + } + + // copy one vec3 from src to dst + template<class S, class T> + static void copyVec3(S* src, T& dst) + { + LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL; + } + + // copy one vec4 from src to dst + template<class S, class T> + static void copyVec4(S* src, T& dst) + { + LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL; + } + + // copy one vec2 from src to dst + template<class S, class T> + static void copyMat2(S* src, T& dst) + { + LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL; + } + + // copy one vec3 from src to dst + template<class S, class T> + static void copyMat3(S* src, T& dst) + { + LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL; + } + + // copy one vec4 from src to dst + template<class S, class T> + static void copyMat4(S* src, T& dst) + { + LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL; + } + + //========================================================================================================= + // concrete implementations for different types of source and destination + //========================================================================================================= + +// suppress unused function warning -- clang complains here but these specializations are definitely used +#if defined(__clang__) +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wunused-function" +#endif + + template<> + void copyScalar<F32, F32>(F32* src, F32& dst) + { + dst = *src; + } + + template<> + void copyScalar<U32, U32>(U32* src, U32& dst) + { + dst = *src; + } + + template<> + void copyScalar<U32, U16>(U32* src, U16& dst) + { + dst = *src; + } + + template<> + void copyScalar<U16, U16>(U16* src, U16& dst) + { + dst = *src; + } + + template<> + void copyScalar<U16, U32>(U16* src, U32& dst) + { + dst = *src; + } + + template<> + void copyScalar<U8, U16>(U8* src, U16& dst) + { + dst = *src; + } + + template<> + void copyScalar<U8, U32>(U8* src, U32& dst) + { + dst = *src; + } + + template<> + void copyVec2<F32, LLVector2>(F32* src, LLVector2& dst) + { + dst.set(src[0], src[1]); + } + + template<> + void copyVec3<F32, glh::vec3f>(F32* src, glh::vec3f& dst) + { + dst.set_value(src[0], src[1], src[2]); + } + + template<> + void copyVec3<F32, LLVector4a>(F32* src, LLVector4a& dst) + { + dst.load3(src); + } + + template<> + void copyVec3<U16, LLColor4U>(U16* src, LLColor4U& dst) + { + dst.set(src[0], src[1], src[2], 255); + } + + template<> + void copyVec4<U8, LLColor4U>(U8* src, LLColor4U& dst) + { + dst.set(src[0], src[1], src[2], src[3]); + } + + template<> + void copyVec4<U16, LLColor4U>(U16* src, LLColor4U& dst) + { + dst.set(src[0], src[1], src[2], src[3]); + } + + template<> + void copyVec4<F32, LLColor4U>(F32* src, LLColor4U& dst) + { + dst.set(src[0]*255, src[1]*255, src[2]*255, src[3]*255); + } + + template<> + void copyVec4<F32, LLVector4a>(F32* src, LLVector4a& dst) + { + dst.loadua(src); + } + + template<> + void copyVec4<U16, LLVector4a>(U16* src, LLVector4a& dst) + { + dst.set(src[0], src[1], src[2], src[3]); + } + + template<> + void copyVec4<U8, LLVector4a>(U8* src, LLVector4a& dst) + { + dst.set(src[0], src[1], src[2], src[3]); + } + + template<> + void copyVec4<F32, glh::quaternionf>(F32* src, glh::quaternionf& dst) + { + dst.set_value(src); + } + + template<> + void copyMat4<F32, glh::matrix4f>(F32* src, glh::matrix4f& dst) + { + dst.set_value(src); + } + +#if defined(__clang__) +#pragma clang diagnostic pop +#endif + + //========================================================================================================= + + // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy + template<class S, class T> + static void copyScalar(S* src, LLStrider<T> dst, S32 stride, S32 count) + { + for (S32 i = 0; i < count; ++i) + { + copyScalar(src, *dst); + dst++; + src = (S*)((U8*)src + stride); + } + } + + // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy + template<class S, class T> + static void copyVec2(S* src, LLStrider<T> dst, S32 stride, S32 count) + { + for (S32 i = 0; i < count; ++i) + { + copyVec2(src, *dst); + dst++; + src = (S*)((U8*)src + stride); + } + } + + // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy + template<class S, class T> + static void copyVec3(S* src, LLStrider<T> dst, S32 stride, S32 count) + { + for (S32 i = 0; i < count; ++i) + { + copyVec3(src, *dst); + dst++; + src = (S*)((U8*)src + stride); + } + } + + // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy + template<class S, class T> + static void copyVec4(S* src, LLStrider<T> dst, S32 stride, S32 count) + { + for (S32 i = 0; i < count; ++i) + { + copyVec4(src, *dst); + dst++; + src = (S*)((U8*)src + stride); + } + } + + // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy + template<class S, class T> + static void copyMat2(S* src, LLStrider<T> dst, S32 stride, S32 count) + { + for (S32 i = 0; i < count; ++i) + { + copyMat2(src, *dst); + dst++; + src = (S*)((U8*)src + stride); + } + } + + // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy + template<class S, class T> + static void copyMat3(S* src, LLStrider<T> dst, S32 stride, S32 count) + { + for (S32 i = 0; i < count; ++i) + { + copyMat3(src, *dst); + dst++; + src = (S*)((U8*)src + stride); + } + } + + // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy + template<class S, class T> + static void copyMat4(S* src, LLStrider<T> dst, S32 stride, S32 count) + { + for (S32 i = 0; i < count; ++i) + { + copyMat4(src, *dst); + dst++; + src = (S*)((U8*)src + stride); + } + } + + template<class S, class T> + static void copy(Asset& asset, Accessor& accessor, const S* src, LLStrider<T>& dst, S32 byteStride) + { + if (accessor.mType == (S32)Accessor::Type::SCALAR) + { + S32 stride = byteStride == 0 ? sizeof(S) * 1 : byteStride; + copyScalar((S*)src, dst, stride, accessor.mCount); + } + else if (accessor.mType == (S32)Accessor::Type::VEC2) + { + S32 stride = byteStride == 0 ? sizeof(S) * 2 : byteStride; + copyVec2((S*)src, dst, stride, accessor.mCount); + } + else if (accessor.mType == (S32)Accessor::Type::VEC3) + { + S32 stride = byteStride == 0 ? sizeof(S) * 3 : byteStride; + copyVec3((S*)src, dst, stride, accessor.mCount); + } + else if (accessor.mType == (S32)Accessor::Type::VEC4) + { + S32 stride = byteStride == 0 ? sizeof(S) * 4 : byteStride; + copyVec4((S*)src, dst, stride, accessor.mCount); + } + else if (accessor.mType == (S32)Accessor::Type::MAT2) + { + S32 stride = byteStride == 0 ? sizeof(S) * 4 : byteStride; + copyMat2((S*)src, dst, stride, accessor.mCount); + } + else if (accessor.mType == (S32)Accessor::Type::MAT3) + { + S32 stride = byteStride == 0 ? sizeof(S) * 9 : byteStride; + copyMat3((S*)src, dst, stride, accessor.mCount); + } + else if (accessor.mType == (S32)Accessor::Type::MAT4) + { + S32 stride = byteStride == 0 ? sizeof(S) * 16 : byteStride; + copyMat4((S*)src, dst, stride, accessor.mCount); + } + else + { + LL_ERRS("GLTF") << "Unsupported accessor type" << LL_ENDL; + } + } + + // copy data from accessor to strider + template<class T> + static void copy(Asset& asset, Accessor& accessor, LLStrider<T>& dst) + { + const BufferView& bufferView = asset.mBufferViews[accessor.mBufferView]; + const Buffer& buffer = asset.mBuffers[bufferView.mBuffer]; + const U8* src = buffer.mData.data() + bufferView.mByteOffset + accessor.mByteOffset; + + if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_FLOAT) + { + LL::GLTF::copy(asset, accessor, (const F32*)src, dst, bufferView.mByteStride); + } + else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_UNSIGNED_SHORT) + { + LL::GLTF::copy(asset, accessor, (const U16*)src, dst, bufferView.mByteStride); + } + else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_UNSIGNED_INT) + { + LL::GLTF::copy(asset, accessor, (const U32*)src, dst, bufferView.mByteStride); + } + else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE) + { + LL::GLTF::copy(asset, accessor, (const U8*)src, dst, bufferView.mByteStride); + } + else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_SHORT) + { + LL::GLTF::copy(asset, accessor, (const S16*)src, dst, bufferView.mByteStride); + } + else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_BYTE) + { + LL::GLTF::copy(asset, accessor, (const S8*)src, dst, bufferView.mByteStride); + } + else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_DOUBLE) + { + LL::GLTF::copy(asset, accessor, (const F64*)src, dst, bufferView.mByteStride); + } + else + { + LL_ERRS("GLTF") << "Unsupported component type" << LL_ENDL; + } + } + + // copy data from accessor to vector + template<class T> + static void copy(Asset& asset, Accessor& accessor, std::vector<T>& dst) + { + dst.resize(accessor.mCount); + LLStrider<T> strider = dst.data(); + copy(asset, accessor, strider); + } + } +} + |