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
|
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrGLUniformManager_DEFINED
#define GrGLUniformManager_DEFINED
#include "gl/GrGLShaderVar.h"
#include "gl/GrGLSL.h"
#include "SkTArray.h"
class GrGLContextInfo;
/** Manages a program's uniforms.
*/
class GrGLUniformManager {
public:
// Opaque handle to a uniform
typedef int UniformHandle;
static const UniformHandle kInvalidUniformHandle = 0;
GrGLUniformManager(const GrGLContextInfo& context) : fContext(context) {}
UniformHandle appendUniform(GrSLType type, int arrayCount = GrGLShaderVar::kNonArray);
/** Functions for uploading uniform values. The varities ending in v can be used to upload to an
* array of uniforms. offset + arrayCount must be <= the array count of the uniform.
*/
void setSampler(UniformHandle, GrGLint texUnit) const;
void set1f(UniformHandle, GrGLfloat v0) const;
void set1fv(UniformHandle, int offset, int arrayCount, const GrGLfloat v[]) const;
void set2f(UniformHandle, GrGLfloat, GrGLfloat) const;
void set2fv(UniformHandle, int offset, int arrayCount, const GrGLfloat v[]) const;
void set3f(UniformHandle, GrGLfloat, GrGLfloat, GrGLfloat) const;
void set3fv(UniformHandle, int offset, int arrayCount, const GrGLfloat v[]) const;
void set4f(UniformHandle, GrGLfloat, GrGLfloat, GrGLfloat, GrGLfloat) const;
void set4fv(UniformHandle, int offset, int arrayCount, const GrGLfloat v[]) const;
// matrices are column-major, the first three upload a single matrix, the latter three upload
// arrayCount matrices into a uniform array.
void setMatrix3f(UniformHandle, const GrGLfloat matrix[]) const;
void setMatrix4f(UniformHandle, const GrGLfloat matrix[]) const;
void setMatrix3fv(UniformHandle, int offset, int arrayCount, const GrGLfloat matrices[]) const;
void setMatrix4fv(UniformHandle, int offset, int arrayCount, const GrGLfloat matrices[]) const;
struct BuilderUniform {
GrGLShaderVar fVariable;
uint32_t fVisibility;
};
typedef SkTArray<BuilderUniform, true> BuilderUniformArray;
/**
* Called by the GrGLShaderBuilder to get GL locations for all uniforms.
*/
void getUniformLocations(GrGLuint programID, const BuilderUniformArray& uniforms);
private:
enum {
kUnusedUniform = -1,
};
struct Uniform {
GrGLint fVSLocation;
GrGLint fFSLocation;
GrSLType fType;
int fArrayCount;
};
SkTArray<Uniform, true> fUniforms;
const GrGLContextInfo& fContext;
};
#endif
|
