Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2022 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef MESH_H_ |
| 18 | #define MESH_H_ |
| 19 | |
| 20 | #include <GrDirectContext.h> |
| 21 | #include <SkMesh.h> |
| 22 | #include <jni.h> |
| 23 | #include <log/log.h> |
| 24 | |
| 25 | #include <utility> |
| 26 | |
| 27 | class MeshUniformBuilder { |
| 28 | public: |
| 29 | struct MeshUniform { |
| 30 | template <typename T> |
| 31 | std::enable_if_t<std::is_trivially_copyable<T>::value, MeshUniform> operator=( |
| 32 | const T& val) { |
| 33 | if (!fVar) { |
| 34 | LOG_FATAL("Assigning to missing variable"); |
| 35 | } else if (sizeof(val) != fVar->sizeInBytes()) { |
| 36 | LOG_FATAL("Incorrect value size"); |
| 37 | } else { |
| 38 | void* dst = reinterpret_cast<void*>( |
| 39 | reinterpret_cast<uint8_t*>(fOwner->writableUniformData()) + fVar->offset); |
| 40 | memcpy(dst, &val, sizeof(val)); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | MeshUniform& operator=(const SkMatrix& val) { |
| 45 | if (!fVar) { |
| 46 | LOG_FATAL("Assigning to missing variable"); |
| 47 | } else if (fVar->sizeInBytes() != 9 * sizeof(float)) { |
| 48 | LOG_FATAL("Incorrect value size"); |
| 49 | } else { |
| 50 | float* data = reinterpret_cast<float*>( |
| 51 | reinterpret_cast<uint8_t*>(fOwner->writableUniformData()) + fVar->offset); |
| 52 | data[0] = val.get(0); |
| 53 | data[1] = val.get(3); |
| 54 | data[2] = val.get(6); |
| 55 | data[3] = val.get(1); |
| 56 | data[4] = val.get(4); |
| 57 | data[5] = val.get(7); |
| 58 | data[6] = val.get(2); |
| 59 | data[7] = val.get(5); |
| 60 | data[8] = val.get(8); |
| 61 | } |
| 62 | return *this; |
| 63 | } |
| 64 | |
| 65 | template <typename T> |
| 66 | bool set(const T val[], const int count) { |
| 67 | static_assert(std::is_trivially_copyable<T>::value, "Value must be trivial copyable"); |
| 68 | if (!fVar) { |
| 69 | LOG_FATAL("Assigning to missing variable"); |
| 70 | return false; |
| 71 | } else if (sizeof(T) * count != fVar->sizeInBytes()) { |
| 72 | LOG_FATAL("Incorrect value size"); |
| 73 | return false; |
| 74 | } else { |
| 75 | void* dst = reinterpret_cast<void*>( |
| 76 | reinterpret_cast<uint8_t*>(fOwner->writableUniformData()) + fVar->offset); |
| 77 | memcpy(dst, val, sizeof(T) * count); |
| 78 | } |
| 79 | return true; |
| 80 | } |
| 81 | |
| 82 | MeshUniformBuilder* fOwner; |
| 83 | const SkRuntimeEffect::Uniform* fVar; |
| 84 | }; |
| 85 | MeshUniform uniform(std::string_view name) { return {this, fMeshSpec->findUniform(name)}; } |
| 86 | |
| 87 | explicit MeshUniformBuilder(sk_sp<SkMeshSpecification> meshSpec) { |
| 88 | fMeshSpec = sk_sp(meshSpec); |
| 89 | fUniforms = (SkData::MakeZeroInitialized(meshSpec->uniformSize())); |
| 90 | } |
| 91 | |
| 92 | sk_sp<SkData> fUniforms; |
| 93 | |
| 94 | private: |
| 95 | void* writableUniformData() { |
| 96 | if (!fUniforms->unique()) { |
| 97 | fUniforms = SkData::MakeWithCopy(fUniforms->data(), fUniforms->size()); |
| 98 | } |
| 99 | return fUniforms->writable_data(); |
| 100 | } |
| 101 | |
| 102 | sk_sp<SkMeshSpecification> fMeshSpec; |
| 103 | }; |
| 104 | |
| 105 | class Mesh { |
| 106 | public: |
Nader Jawad | 8c1d7aa | 2023-03-02 15:59:11 -0800 | [diff] [blame^] | 107 | Mesh(const sk_sp<SkMeshSpecification>& meshSpec, int mode, |
| 108 | std::vector<uint8_t>&& vertexBufferData, jint vertexCount, jint vertexOffset, |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 109 | std::unique_ptr<MeshUniformBuilder> builder, const SkRect& bounds) |
| 110 | : mMeshSpec(meshSpec) |
| 111 | , mMode(mode) |
Nader Jawad | 8c1d7aa | 2023-03-02 15:59:11 -0800 | [diff] [blame^] | 112 | , mVertexBufferData(std::move(vertexBufferData)) |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 113 | , mVertexCount(vertexCount) |
| 114 | , mVertexOffset(vertexOffset) |
| 115 | , mBuilder(std::move(builder)) |
Nader Jawad | 8c1d7aa | 2023-03-02 15:59:11 -0800 | [diff] [blame^] | 116 | , mBounds(bounds) {} |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 117 | |
Nader Jawad | 8c1d7aa | 2023-03-02 15:59:11 -0800 | [diff] [blame^] | 118 | Mesh(const sk_sp<SkMeshSpecification>& meshSpec, int mode, |
| 119 | std::vector<uint8_t>&& vertexBufferData, jint vertexCount, jint vertexOffset, |
| 120 | std::vector<uint8_t>&& indexBuffer, jint indexCount, jint indexOffset, |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 121 | std::unique_ptr<MeshUniformBuilder> builder, const SkRect& bounds) |
| 122 | : mMeshSpec(meshSpec) |
| 123 | , mMode(mode) |
Nader Jawad | 8c1d7aa | 2023-03-02 15:59:11 -0800 | [diff] [blame^] | 124 | , mVertexBufferData(std::move(vertexBufferData)) |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 125 | , mVertexCount(vertexCount) |
| 126 | , mVertexOffset(vertexOffset) |
Nader Jawad | 8c1d7aa | 2023-03-02 15:59:11 -0800 | [diff] [blame^] | 127 | , mIndexBufferData(std::move(indexBuffer)) |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 128 | , mIndexCount(indexCount) |
| 129 | , mIndexOffset(indexOffset) |
| 130 | , mBuilder(std::move(builder)) |
Nader Jawad | 8c1d7aa | 2023-03-02 15:59:11 -0800 | [diff] [blame^] | 131 | , mBounds(bounds) {} |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 132 | |
| 133 | Mesh(Mesh&&) = default; |
| 134 | |
| 135 | Mesh& operator=(Mesh&&) = default; |
| 136 | |
| 137 | [[nodiscard]] std::tuple<bool, SkString> validate(); |
| 138 | |
| 139 | void updateSkMesh(GrDirectContext* context) const { |
| 140 | GrDirectContext::DirectContextID genId = GrDirectContext::DirectContextID(); |
| 141 | if (context) { |
| 142 | genId = context->directContextID(); |
| 143 | } |
| 144 | |
| 145 | if (mIsDirty || genId != mGenerationId) { |
| 146 | auto vb = SkMesh::MakeVertexBuffer( |
| 147 | context, reinterpret_cast<const void*>(mVertexBufferData.data()), |
| 148 | mVertexBufferData.size()); |
| 149 | auto meshMode = SkMesh::Mode(mMode); |
| 150 | if (!mIndexBufferData.empty()) { |
| 151 | auto ib = SkMesh::MakeIndexBuffer( |
| 152 | context, reinterpret_cast<const void*>(mIndexBufferData.data()), |
| 153 | mIndexBufferData.size()); |
| 154 | mMesh = SkMesh::MakeIndexed(mMeshSpec, meshMode, vb, mVertexCount, mVertexOffset, |
| 155 | ib, mIndexCount, mIndexOffset, mBuilder->fUniforms, |
| 156 | mBounds) |
| 157 | .mesh; |
| 158 | } else { |
| 159 | mMesh = SkMesh::Make(mMeshSpec, meshMode, vb, mVertexCount, mVertexOffset, |
| 160 | mBuilder->fUniforms, mBounds) |
| 161 | .mesh; |
| 162 | } |
| 163 | mIsDirty = false; |
| 164 | mGenerationId = genId; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | SkMesh& getSkMesh() const { |
| 169 | LOG_FATAL_IF(mIsDirty, |
| 170 | "Attempt to obtain SkMesh when Mesh is dirty, did you " |
| 171 | "forget to call updateSkMesh with a GrDirectContext? " |
| 172 | "Defensively creating a CPU mesh"); |
| 173 | return mMesh; |
| 174 | } |
| 175 | |
| 176 | void markDirty() { mIsDirty = true; } |
| 177 | |
| 178 | MeshUniformBuilder* uniformBuilder() { return mBuilder.get(); } |
| 179 | |
| 180 | private: |
Nader Jawad | 5f0a800 | 2023-02-21 17:00:51 -0800 | [diff] [blame] | 181 | sk_sp<SkMeshSpecification> mMeshSpec; |
| 182 | int mMode = 0; |
| 183 | |
| 184 | std::vector<uint8_t> mVertexBufferData; |
| 185 | size_t mVertexCount = 0; |
| 186 | size_t mVertexOffset = 0; |
| 187 | |
| 188 | std::vector<uint8_t> mIndexBufferData; |
| 189 | size_t mIndexCount = 0; |
| 190 | size_t mIndexOffset = 0; |
| 191 | |
| 192 | std::unique_ptr<MeshUniformBuilder> mBuilder; |
| 193 | SkRect mBounds{}; |
| 194 | |
| 195 | mutable SkMesh mMesh{}; |
| 196 | mutable bool mIsDirty = true; |
| 197 | mutable GrDirectContext::DirectContextID mGenerationId = GrDirectContext::DirectContextID(); |
| 198 | }; |
| 199 | #endif // MESH_H_ |