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
|
//
// Copyright 2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// ProgramPipeline.h: Defines the gl::ProgramPipeline class.
// Implements GL program pipeline objects and related functionality.
// [OpenGL ES 3.1] section 7.4 page 105.
#ifndef LIBANGLE_PROGRAMPIPELINE_H_
#define LIBANGLE_PROGRAMPIPELINE_H_
#include <memory>
#include "common/angleutils.h"
#include "libANGLE/Debug.h"
#include "libANGLE/Program.h"
#include "libANGLE/ProgramExecutable.h"
#include "libANGLE/RefCountObject.h"
namespace rx
{
class GLImplFactory;
class ProgramPipelineImpl;
} // namespace rx
namespace gl
{
class Context;
class ProgramPipeline;
class ProgramPipelineState final : angle::NonCopyable
{
public:
ProgramPipelineState();
~ProgramPipelineState();
const std::string &getLabel() const;
ProgramExecutable &getExecutable() const
{
ASSERT(mExecutable);
return *mExecutable;
}
void activeShaderProgram(Program *shaderProgram);
void useProgramStages(const Context *context,
const gl::ShaderBitSet &shaderTypes,
Program *shaderProgram,
std::vector<angle::ObserverBinding> *programObserverBindings);
Program *getActiveShaderProgram() { return mActiveShaderProgram; }
GLboolean isValid() const { return mValid; }
const Program *getShaderProgram(ShaderType shaderType) const { return mPrograms[shaderType]; }
bool usesShaderProgram(ShaderProgramID program) const;
void updateExecutableTextures();
rx::SpecConstUsageBits getSpecConstUsageBits() const;
private:
void useProgramStage(const Context *context,
ShaderType shaderType,
Program *shaderProgram,
angle::ObserverBinding *programObserverBindings);
friend class ProgramPipeline;
std::string mLabel;
// The active shader program
Program *mActiveShaderProgram;
// The shader programs for each stage.
ShaderMap<Program *> mPrograms;
GLboolean mValid;
ProgramExecutable *mExecutable;
bool mIsLinked;
};
class ProgramPipeline final : public RefCountObject<ProgramPipelineID>,
public LabeledObject,
public angle::ObserverInterface,
public angle::Subject
{
public:
ProgramPipeline(rx::GLImplFactory *factory, ProgramPipelineID handle);
~ProgramPipeline() override;
void onDestroy(const Context *context) override;
angle::Result setLabel(const Context *context, const std::string &label) override;
const std::string &getLabel() const override;
const ProgramPipelineState &getState() const { return mState; }
ProgramPipelineState &getState() { return mState; }
ProgramExecutable &getExecutable() const { return mState.getExecutable(); }
rx::ProgramPipelineImpl *getImplementation() const;
Program *getActiveShaderProgram() { return mState.getActiveShaderProgram(); }
void activeShaderProgram(Program *shaderProgram);
Program *getLinkedActiveShaderProgram(const Context *context)
{
Program *program = mState.getActiveShaderProgram();
if (program)
{
program->resolveLink(context);
}
return program;
}
angle::Result useProgramStages(const Context *context,
GLbitfield stages,
Program *shaderProgram);
Program *getShaderProgram(ShaderType shaderType) const { return mState.mPrograms[shaderType]; }
void resetIsLinked() { mState.mIsLinked = false; }
angle::Result link(const gl::Context *context);
// Ensure program pipeline is linked. Inlined to make sure its overhead is as low as possible.
void resolveLink(const Context *context)
{
if (mState.mIsLinked)
{
// Already linked, nothing to do.
return;
}
angle::Result linkResult = link(context);
if (linkResult != angle::Result::Continue)
{
// If the link failed then log a warning, swallow the error and move on.
WARN() << "ProgramPipeline link failed" << std::endl;
}
return;
}
void validate(const gl::Context *context);
GLboolean isValid() const { return mState.isValid(); }
bool isLinked() const { return mState.mIsLinked; }
// ObserverInterface implementation.
void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override;
private:
bool linkVaryings(InfoLog &infoLog) const;
void updateLinkedShaderStages();
void updateExecutableAttributes();
void updateTransformFeedbackMembers();
void updateShaderStorageBlocks();
void updateImageBindings();
void updateExecutableGeometryProperties();
void updateExecutableTessellationProperties();
void updateFragmentInoutRangeAndEnablesPerSampleShading();
void updateLinkedVaryings();
void updateExecutable();
std::unique_ptr<rx::ProgramPipelineImpl> mProgramPipelineImpl;
ProgramPipelineState mState;
std::vector<angle::ObserverBinding> mProgramObserverBindings;
angle::ObserverBinding mExecutableObserverBinding;
};
} // namespace gl
#endif // LIBANGLE_PROGRAMPIPELINE_H_
|
