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author | Nat Goodspeed <nat@lindenlab.com> | 2024-06-11 10:21:19 -0400 |
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committer | Nat Goodspeed <nat@lindenlab.com> | 2024-06-11 10:21:19 -0400 |
commit | 30f4163b7b576d96533b61d9b31243960fb83f2e (patch) | |
tree | bd5dc1450e08c674a4619d7f16a9a4816005f9c4 /indra/newview/gltf/primitive.h | |
parent | 3d1aac4f5c369e9d402c41f1c790d9015f7c7773 (diff) | |
parent | f5e2708a0fc4e08d3d0a5dc393bbd4bac09e1c55 (diff) |
Merge branch 'main' of github.com:secondlife/viewer into lua-bradfix
to pick up Featurettes promotion + Brad's GitHub Windows build workaround.
Diffstat (limited to 'indra/newview/gltf/primitive.h')
-rw-r--r-- | indra/newview/gltf/primitive.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/indra/newview/gltf/primitive.h b/indra/newview/gltf/primitive.h new file mode 100644 index 0000000000..07e8e7deb2 --- /dev/null +++ b/indra/newview/gltf/primitive.h @@ -0,0 +1,93 @@ +#pragma once + +/** + * @file primitive.h + * @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 + * $/LicenseInfo$ + */ + +#include "llvertexbuffer.h" +#include "llvolumeoctree.h" + +// LL GLTF Implementation +namespace LL +{ + namespace GLTF + { + class Asset; + + constexpr U32 ATTRIBUTE_MASK = + LLVertexBuffer::MAP_VERTEX | + LLVertexBuffer::MAP_NORMAL | + LLVertexBuffer::MAP_TEXCOORD0 | + LLVertexBuffer::MAP_TANGENT | + LLVertexBuffer::MAP_COLOR; + + class Primitive + { + public: + ~Primitive(); + + // GPU copy of mesh data + LLPointer<LLVertexBuffer> mVertexBuffer; + + // CPU copy of mesh data + std::vector<LLVector2> mTexCoords; + std::vector<LLVector4a> mNormals; + std::vector<LLVector4a> mTangents; + std::vector<LLVector4a> mPositions; + std::vector<LLVector4a> mJoints; + std::vector<LLVector4a> mWeights; + std::vector<LLColor4U> mColors; + std::vector<U32> mIndexArray; + + // raycast acceleration structure + LLPointer<LLVolumeOctree> mOctree; + std::vector<LLVolumeTriangle> mOctreeTriangles; + + S32 mMaterial = -1; + U32 mMode = TINYGLTF_MODE_TRIANGLES; // default to triangles + U32 mGLMode = LLRender::TRIANGLES; + S32 mIndices = -1; + std::unordered_map<std::string, int> mAttributes; + + // create octree based on vertex buffer + // must be called before buffer is unmapped and after buffer is populated with good data + void createOctree(); + + //get the LLVolumeTriangle that intersects with the given line segment at the point + //closest to start. Moves end to the point of intersection. Returns nullptr if no intersection. + //Line segment must be in the same coordinate frame as this Primitive + const LLVolumeTriangle* lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, + LLVector4a* intersection = NULL, // return the intersection point + LLVector2* tex_coord = NULL, // return the texture coordinates of the intersection point + LLVector4a* normal = NULL, // return the surface normal at the intersection point + LLVector4a* tangent = NULL // return the surface tangent at the intersection point + ); + + const Primitive& operator=(const tinygltf::Primitive& src); + + void allocateGLResources(Asset& asset); + }; + } +} |