-
Notifications
You must be signed in to change notification settings - Fork 933
/
types.hpp
312 lines (260 loc) · 11.1 KB
/
types.hpp
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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
#ifndef OPENMW_COMPONENTS_FX_TYPES_H
#define OPENMW_COMPONENTS_FX_TYPES_H
#include <optional>
#include <variant>
#include <osg/Texture2D>
#include <osg/Uniform>
#include <components/debug/debuglog.hpp>
#include <components/misc/strings/format.hpp>
#include <components/sceneutil/depth.hpp>
#include <components/settings/shadermanager.hpp>
namespace fx
{
namespace Types
{
struct SizeProxy
{
std::optional<float> mWidthRatio;
std::optional<float> mHeightRatio;
std::optional<int> mWidth;
std::optional<int> mHeight;
std::tuple<int, int> get(int width, int height) const
{
int scaledWidth = width;
int scaledHeight = height;
if (mWidthRatio)
scaledWidth = width * mWidthRatio.value();
else if (mWidth)
scaledWidth = mWidth.value();
if (mHeightRatio > 0.f)
scaledHeight = height * mHeightRatio.value();
else if (mHeight)
scaledHeight = mHeight.value();
return std::make_tuple(scaledWidth, scaledHeight);
}
};
struct RenderTarget
{
osg::ref_ptr<osg::Texture2D> mTarget = new osg::Texture2D;
SizeProxy mSize;
bool mMipMap = false;
osg::Vec4f mClearColor = osg::Vec4f(0.0, 0.0, 0.0, 1.0);
};
template <class T>
struct Choice
{
std::string mLabel;
T mValue;
};
template <class T>
struct Uniform
{
std::optional<T> mValue;
std::optional<std::vector<T>> mArray;
T mDefault = {};
T mMin = std::numeric_limits<T>::lowest();
T mMax = std::numeric_limits<T>::max();
std::vector<Choice<T>> mChoices;
using value_type = T;
bool isArray() const { return mArray.has_value(); }
const std::vector<T>& getArray() const { return *mArray; }
T getValue() const { return mValue.value_or(mDefault); }
};
using Uniform_t = std::variant<Uniform<osg::Vec2f>, Uniform<osg::Vec3f>, Uniform<osg::Vec4f>, Uniform<bool>,
Uniform<float>, Uniform<int>>;
enum SamplerType
{
Texture_1D,
Texture_2D,
Texture_3D
};
struct UniformBase
{
std::string mName;
std::string mDisplayName;
std::string mHeader;
std::string mTechniqueName;
std::string mDescription;
bool mStatic = true;
std::optional<SamplerType> mSamplerType = std::nullopt;
double mStep = 1.0;
Uniform_t mData;
template <class T>
T getValue() const
{
auto value = Settings::ShaderManager::get().getValue<T>(mTechniqueName, mName);
return value.value_or(std::get<Uniform<T>>(mData).getValue());
}
size_t getNumElements() const
{
return std::visit(
[&](auto&& arg) {
;
return arg.isArray() ? arg.getArray().size() : 1;
},
mData);
}
template <class T>
T getMin() const
{
return std::get<Uniform<T>>(mData).mMin;
}
template <class T>
T getMax() const
{
return std::get<Uniform<T>>(mData).mMax;
}
template <class T>
T getDefault() const
{
return std::get<Uniform<T>>(mData).mDefault;
}
template <class T>
void setValue(const T& value)
{
std::visit(
[&, value](auto&& arg) {
using U = typename std::decay_t<decltype(arg)>::value_type;
if constexpr (std::is_same_v<T, U>)
{
arg.mValue = value;
Settings::ShaderManager::get().setValue(mTechniqueName, mName, value);
}
else
{
Log(Debug::Warning) << "Attempting to set uniform '" << mName << "' with wrong type";
}
},
mData);
}
template <class T, class A>
void setValue(const std::vector<T, A>& value)
{
std::visit(
[&, value](auto&& arg) {
using U = typename std::decay_t<decltype(arg)>::value_type;
if (!arg.isArray() || arg.getArray().size() != value.size())
{
Log(Debug::Error)
<< "Attempting to set uniform array '" << mName << "' with mismatching array sizes";
return;
}
if constexpr (std::is_same_v<T, U>)
{
arg.mArray = value;
Settings::ShaderManager::get().setValue(mTechniqueName, mName, value);
}
else
Log(Debug::Warning) << "Attempting to set uniform array '" << mName << "' with wrong type";
},
mData);
}
void setUniform(osg::Uniform* uniform)
{
auto type = getType();
if (!type || type.value() != uniform->getType())
return;
std::visit(
[&](auto&& arg) {
if (arg.isArray())
{
for (size_t i = 0; i < arg.getArray().size(); ++i)
uniform->setElement(i, arg.getArray()[i]);
uniform->dirty();
}
else
uniform->set(arg.getValue());
},
mData);
}
std::optional<osg::Uniform::Type> getType() const
{
return std::visit(
[](auto&& arg) -> std::optional<osg::Uniform::Type> {
using T = typename std::decay_t<decltype(arg)>::value_type;
if constexpr (std::is_same_v<T, osg::Vec2f>)
return osg::Uniform::FLOAT_VEC2;
else if constexpr (std::is_same_v<T, osg::Vec3f>)
return osg::Uniform::FLOAT_VEC3;
else if constexpr (std::is_same_v<T, osg::Vec4f>)
return osg::Uniform::FLOAT_VEC4;
else if constexpr (std::is_same_v<T, float>)
return osg::Uniform::FLOAT;
else if constexpr (std::is_same_v<T, int>)
return osg::Uniform::INT;
else if constexpr (std::is_same_v<T, bool>)
return osg::Uniform::BOOL;
return std::nullopt;
},
mData);
}
std::optional<std::string> getGLSL()
{
if (mSamplerType)
{
switch (mSamplerType.value())
{
case Texture_1D:
return Misc::StringUtils::format("uniform sampler1D %s;", mName);
case Texture_2D:
return Misc::StringUtils::format("uniform sampler2D %s;", mName);
case Texture_3D:
return Misc::StringUtils::format("uniform sampler3D %s;", mName);
}
}
return std::visit(
[&](auto&& arg) -> std::optional<std::string> {
using T = typename std::decay_t<decltype(arg)>::value_type;
auto value = arg.getValue();
const bool useUniform = arg.isArray()
|| (Settings::ShaderManager::get().getMode() == Settings::ShaderManager::Mode::Debug
|| mStatic == false);
const std::string uname = arg.isArray()
? Misc::StringUtils::format("%s[%zu]", mName, arg.getArray().size())
: mName;
if constexpr (std::is_same_v<T, osg::Vec2f>)
{
if (useUniform)
return Misc::StringUtils::format("uniform vec2 %s;", uname);
return Misc::StringUtils::format("const vec2 %s=vec2(%f,%f);", mName, value[0], value[1]);
}
else if constexpr (std::is_same_v<T, osg::Vec3f>)
{
if (useUniform)
return Misc::StringUtils::format("uniform vec3 %s;", uname);
return Misc::StringUtils::format(
"const vec3 %s=vec3(%f,%f,%f);", mName, value[0], value[1], value[2]);
}
else if constexpr (std::is_same_v<T, osg::Vec4f>)
{
if (useUniform)
return Misc::StringUtils::format("uniform vec4 %s;", uname);
return Misc::StringUtils::format(
"const vec4 %s=vec4(%f,%f,%f,%f);", mName, value[0], value[1], value[2], value[3]);
}
else if constexpr (std::is_same_v<T, float>)
{
if (useUniform)
return Misc::StringUtils::format("uniform float %s;", uname);
return Misc::StringUtils::format("const float %s=%f;", mName, value);
}
else if constexpr (std::is_same_v<T, int>)
{
if (useUniform)
return Misc::StringUtils::format("uniform int %s;", uname);
return Misc::StringUtils::format("const int %s=%i;", mName, value);
}
else if constexpr (std::is_same_v<T, bool>)
{
if (useUniform)
return Misc::StringUtils::format("uniform bool %s;", uname);
return Misc::StringUtils::format("const bool %s=%s;", mName, value ? "true" : "false");
}
return std::nullopt;
},
mData);
}
};
}
}
#endif