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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef GrGLUniformManager_DEFINED | 8 #ifndef GrGLUniformManager_DEFINED |
9 #define GrGLUniformManager_DEFINED | 9 #define GrGLUniformManager_DEFINED |
10 | 10 |
11 #include "gl/GrGLShaderVar.h" | 11 #include "gl/GrGLShaderVar.h" |
12 #include "gl/GrGLSL.h" | 12 #include "gl/GrGLSL.h" |
13 #include "GrAllocator.h" | 13 #include "GrAllocator.h" |
14 | 14 |
15 #include "SkTArray.h" | 15 #include "SkTArray.h" |
16 | 16 |
17 class GrGLContext; | 17 class GrGLContext; |
18 class SkMatrix; | 18 class SkMatrix; |
19 | 19 |
20 /** Manages a program's uniforms. | 20 /** Manages a program's uniforms. |
21 */ | 21 */ |
22 class GrGLUniformManager { | 22 class GrGLUniformManager { |
23 public: | 23 public: |
24 // Opaque handle to a uniform | 24 // Opaque handle to a uniform |
25 typedef int UniformHandle; | 25 class UniformHandle { |
26 static const UniformHandle kInvalidUniformHandle = 0; | 26 public: |
27 static UniformHandle CreateFromUniformIndex(int i); | |
28 | |
29 int toUniformIndex() const { GrAssert(isValid()); return ~fHandle; } | |
bsalomon
2013/08/09 13:19:40
Can we make this private to GrGLUniformManager?
I
Kimmo Kinnunen
2013/08/13 09:00:33
Done.
| |
30 bool isValid() const { return 0 != fHandle; } | |
31 | |
32 bool operator==(const UniformHandle& other) const { return other.fHandle == fHandle; } | |
33 | |
34 UniformHandle() | |
35 : fHandle(0) { | |
36 } | |
37 | |
38 private: | |
39 UniformHandle(int handle) | |
40 : fHandle(~handle) { | |
41 GrAssert(isValid()); | |
42 } | |
43 | |
44 int fHandle; | |
45 }; | |
27 | 46 |
28 GrGLUniformManager(const GrGLContext& context) : fContext(context) {} | 47 GrGLUniformManager(const GrGLContext& context) : fContext(context) {} |
29 | 48 |
30 UniformHandle appendUniform(GrSLType type, int arrayCount = GrGLShaderVar::k NonArray); | 49 UniformHandle appendUniform(GrSLType type, int arrayCount = GrGLShaderVar::k NonArray); |
31 | 50 |
32 /** Functions for uploading uniform values. The varities ending in v can be used to upload to an | 51 /** Functions for uploading uniform values. The varities ending in v can be used to upload to an |
33 * array of uniforms. offset + arrayCount must be <= the array count of the uniform. | 52 * array of uniforms. offset + arrayCount must be <= the array count of the uniform. |
34 */ | 53 */ |
35 void setSampler(UniformHandle, GrGLint texUnit) const; | 54 void setSampler(UniformHandle, GrGLint texUnit) const; |
36 void set1f(UniformHandle, GrGLfloat v0) const; | 55 void set1f(UniformHandle, GrGLfloat v0) const; |
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75 GrGLint fFSLocation; | 94 GrGLint fFSLocation; |
76 GrSLType fType; | 95 GrSLType fType; |
77 int fArrayCount; | 96 int fArrayCount; |
78 }; | 97 }; |
79 | 98 |
80 SkTArray<Uniform, true> fUniforms; | 99 SkTArray<Uniform, true> fUniforms; |
81 const GrGLContext& fContext; | 100 const GrGLContext& fContext; |
82 }; | 101 }; |
83 | 102 |
84 #endif | 103 #endif |
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