dea345d28e
- Fix missing attributes in TangentSpaceMesh - Fix missing reference in MikktspaceImpl.cpp
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TNT_GEOMETRY_MIKKTSPACEIMPL_H
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#define TNT_GEOMETRY_MIKKTSPACEIMPL_H
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#include "TangentSpaceMeshInternal.h"
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#include <math/quat.h>
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#include <math/vec2.h>
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#include <math/vec3.h>
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#include <vector>
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struct SMikkTSpaceContext;
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namespace filament::geometry {
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using namespace filament::math;
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class MikktspaceImpl {
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public:
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struct IOVertex {
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float3 position;
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float2 uv;
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quatf tangentSpace;
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};
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MikktspaceImpl(TangentSpaceMeshInput const* input) noexcept;
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MikktspaceImpl(MikktspaceImpl const&) = delete;
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MikktspaceImpl& operator=(MikktspaceImpl const&) = delete;
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void run(TangentSpaceMeshOutput* output) noexcept;
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private:
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// sizeof(float3 + float2 + quatf) (pos, uv, tangent)
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static constexpr size_t const FLOAT3_SIZE = sizeof(float3);
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static constexpr size_t const FLOAT2_SIZE = sizeof(float2);
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static constexpr size_t const QUATF_SIZE = sizeof(quatf);
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static constexpr size_t const POS_OFFSET = 0;
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static constexpr size_t const UV_OFFSET = FLOAT3_SIZE;
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static constexpr size_t const TBN_OFFSET = FLOAT3_SIZE + FLOAT2_SIZE;
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static constexpr size_t const BASE_OUTPUT_SIZE = FLOAT3_SIZE + FLOAT2_SIZE + QUATF_SIZE;
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static int getNumFaces(SMikkTSpaceContext const* context) noexcept;
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static int getNumVerticesOfFace(SMikkTSpaceContext const* context, int const iFace) noexcept;
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static void getPosition(SMikkTSpaceContext const* context, float fvPosOut[], int const iFace,
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int const iVert) noexcept;
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static void getNormal(SMikkTSpaceContext const* context, float fvNormOut[], int const iFace,
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int const iVert) noexcept;
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static void getTexCoord(SMikkTSpaceContext const* context, float fvTexcOut[], int const iFace,
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int const iVert) noexcept;
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static void setTSpaceBasic(SMikkTSpaceContext const* context, float const fvTangent[],
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float const fSign, int const iFace, int const iVert) noexcept;
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static MikktspaceImpl* getThis(SMikkTSpaceContext const* context) noexcept;
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inline const uint3 getTriangle(int const triangleIndex) const noexcept;
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int const mFaceCount;
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float3 const* mPositions;
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size_t const mPositionStride;
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float3 const* mNormals;
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size_t const mNormalStride;
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float2 const* mUVs;
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size_t const mUVStride;
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uint8_t const* mTriangles;
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bool mIsTriangle16;
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struct InputAttribute {
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AttributeImpl attrib;
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uint8_t const* data;
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size_t stride;
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size_t size;
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};
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std::vector<InputAttribute> mInputAttribArrays;
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size_t mOutputElementSize;
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std::vector<uint8_t> mOutputData;
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std::vector<uint8_t> EMPTY_ELEMENT;
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};
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}// namespace filament::geometry
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#endif//TNT_GEOMETRY_MIKKTSPACEIMPL_H
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