1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MESH_H_
#define MESH_H_
#include <GrDirectContext.h>
#include <SkMesh.h>
#include <include/gpu/ganesh/SkMeshGanesh.h>
#include <jni.h>
#include <log/log.h>
#include <utility>
class MeshUniformBuilder {
public:
struct MeshUniform {
template <typename T>
std::enable_if_t<std::is_trivially_copyable<T>::value, MeshUniform> operator=(
const T& val) {
if (!fVar) {
LOG_FATAL("Assigning to missing variable");
} else if (sizeof(val) != fVar->sizeInBytes()) {
LOG_FATAL("Incorrect value size");
} else {
void* dst = reinterpret_cast<void*>(
reinterpret_cast<uint8_t*>(fOwner->writableUniformData()) + fVar->offset);
memcpy(dst, &val, sizeof(val));
}
}
MeshUniform& operator=(const SkMatrix& val) {
if (!fVar) {
LOG_FATAL("Assigning to missing variable");
} else if (fVar->sizeInBytes() != 9 * sizeof(float)) {
LOG_FATAL("Incorrect value size");
} else {
float* data = reinterpret_cast<float*>(
reinterpret_cast<uint8_t*>(fOwner->writableUniformData()) + fVar->offset);
data[0] = val.get(0);
data[1] = val.get(3);
data[2] = val.get(6);
data[3] = val.get(1);
data[4] = val.get(4);
data[5] = val.get(7);
data[6] = val.get(2);
data[7] = val.get(5);
data[8] = val.get(8);
}
return *this;
}
template <typename T>
bool set(const T val[], const int count) {
static_assert(std::is_trivially_copyable<T>::value, "Value must be trivial copyable");
if (!fVar) {
LOG_FATAL("Assigning to missing variable");
return false;
} else if (sizeof(T) * count != fVar->sizeInBytes()) {
LOG_FATAL("Incorrect value size");
return false;
} else {
void* dst = reinterpret_cast<void*>(
reinterpret_cast<uint8_t*>(fOwner->writableUniformData()) + fVar->offset);
memcpy(dst, val, sizeof(T) * count);
}
return true;
}
MeshUniformBuilder* fOwner;
const SkRuntimeEffect::Uniform* fVar;
};
MeshUniform uniform(std::string_view name) { return {this, fMeshSpec->findUniform(name)}; }
explicit MeshUniformBuilder(sk_sp<SkMeshSpecification> meshSpec) {
fMeshSpec = sk_sp(meshSpec);
fUniforms = (SkData::MakeZeroInitialized(meshSpec->uniformSize()));
}
sk_sp<SkData> fUniforms;
private:
void* writableUniformData() {
if (!fUniforms->unique()) {
fUniforms = SkData::MakeWithCopy(fUniforms->data(), fUniforms->size());
}
return fUniforms->writable_data();
}
sk_sp<SkMeshSpecification> fMeshSpec;
};
class Mesh {
public:
Mesh(const sk_sp<SkMeshSpecification>& meshSpec, int mode,
std::vector<uint8_t>&& vertexBufferData, jint vertexCount, jint vertexOffset,
std::unique_ptr<MeshUniformBuilder> builder, const SkRect& bounds)
: mMeshSpec(meshSpec)
, mMode(mode)
, mVertexBufferData(std::move(vertexBufferData))
, mVertexCount(vertexCount)
, mVertexOffset(vertexOffset)
, mBuilder(std::move(builder))
, mBounds(bounds) {}
Mesh(const sk_sp<SkMeshSpecification>& meshSpec, int mode,
std::vector<uint8_t>&& vertexBufferData, jint vertexCount, jint vertexOffset,
std::vector<uint8_t>&& indexBuffer, jint indexCount, jint indexOffset,
std::unique_ptr<MeshUniformBuilder> builder, const SkRect& bounds)
: mMeshSpec(meshSpec)
, mMode(mode)
, mVertexBufferData(std::move(vertexBufferData))
, mVertexCount(vertexCount)
, mVertexOffset(vertexOffset)
, mIndexBufferData(std::move(indexBuffer))
, mIndexCount(indexCount)
, mIndexOffset(indexOffset)
, mBuilder(std::move(builder))
, mBounds(bounds) {}
Mesh(Mesh&&) = default;
Mesh& operator=(Mesh&&) = default;
[[nodiscard]] std::tuple<bool, SkString> validate();
void updateSkMesh(GrDirectContext* context) const {
GrDirectContext::DirectContextID genId = GrDirectContext::DirectContextID();
if (context) {
genId = context->directContextID();
}
if (mIsDirty || genId != mGenerationId) {
auto vertexData = reinterpret_cast<const void*>(mVertexBufferData.data());
#ifdef __ANDROID__
auto vb = SkMeshes::MakeVertexBuffer(context,
vertexData,
mVertexBufferData.size());
#else
auto vb = SkMeshes::MakeVertexBuffer(vertexData,
mVertexBufferData.size());
#endif
auto meshMode = SkMesh::Mode(mMode);
if (!mIndexBufferData.empty()) {
auto indexData = reinterpret_cast<const void*>(mIndexBufferData.data());
#ifdef __ANDROID__
auto ib = SkMeshes::MakeIndexBuffer(context,
indexData,
mIndexBufferData.size());
#else
auto ib = SkMeshes::MakeIndexBuffer(indexData,
mIndexBufferData.size());
#endif
mMesh = SkMesh::MakeIndexed(mMeshSpec, meshMode, vb, mVertexCount, mVertexOffset,
ib, mIndexCount, mIndexOffset, mBuilder->fUniforms,
SkSpan<SkRuntimeEffect::ChildPtr>(), mBounds)
.mesh;
} else {
mMesh = SkMesh::Make(mMeshSpec, meshMode, vb, mVertexCount, mVertexOffset,
mBuilder->fUniforms, SkSpan<SkRuntimeEffect::ChildPtr>(),
mBounds)
.mesh;
}
mIsDirty = false;
mGenerationId = genId;
}
}
SkMesh& getSkMesh() const {
LOG_FATAL_IF(mIsDirty,
"Attempt to obtain SkMesh when Mesh is dirty, did you "
"forget to call updateSkMesh with a GrDirectContext? "
"Defensively creating a CPU mesh");
return mMesh;
}
void markDirty() { mIsDirty = true; }
MeshUniformBuilder* uniformBuilder() { return mBuilder.get(); }
private:
sk_sp<SkMeshSpecification> mMeshSpec;
int mMode = 0;
std::vector<uint8_t> mVertexBufferData;
size_t mVertexCount = 0;
size_t mVertexOffset = 0;
std::vector<uint8_t> mIndexBufferData;
size_t mIndexCount = 0;
size_t mIndexOffset = 0;
std::unique_ptr<MeshUniformBuilder> mBuilder;
SkRect mBounds{};
mutable SkMesh mMesh{};
mutable bool mIsDirty = true;
mutable GrDirectContext::DirectContextID mGenerationId = GrDirectContext::DirectContextID();
};
#endif // MESH_H_
|