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1 /*
2  * Copyright 2015 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef GrGLSLProgramDataManager_DEFINED
9 #define GrGLSLProgramDataManager_DEFINED
10 
11 #include "include/core/SkTypes.h"
12 #include "include/effects/SkRuntimeEffect.h"
13 #include "include/private/base/SkNoncopyable.h"
14 #include "src/gpu/ganesh/GrResourceHandle.h"
15 
16 class SkMatrix;
17 class SkM44;
18 
19 /** Manages the resources used by a shader program.
20  * The resources are objects the program uses to communicate with the
21  * application code.
22  */
23 class GrGLSLProgramDataManager {
24 public:
25     GR_DEFINE_RESOURCE_HANDLE_CLASS(UniformHandle);
26 
~GrGLSLProgramDataManager()27     virtual ~GrGLSLProgramDataManager() {}
28 
29     /** Functions for uploading uniform values. The varities ending in v can be used to upload to an
30      *  array of uniforms. arrayCount must be <= the array count of the uniform.
31      */
32     virtual void set1i(UniformHandle, int32_t) const = 0;
33     virtual void set1iv(UniformHandle, int arrayCount, const int v[]) const = 0;
34     virtual void set1f(UniformHandle, float v0) const = 0;
35     virtual void set1fv(UniformHandle, int arrayCount, const float v[]) const = 0;
36     virtual void set2i(UniformHandle, int32_t, int32_t) const = 0;
37     virtual void set2iv(UniformHandle, int arrayCount, const int v[]) const = 0;
38     virtual void set2f(UniformHandle, float, float) const = 0;
39     virtual void set2fv(UniformHandle, int arrayCount, const float v[]) const = 0;
40     virtual void set3i(UniformHandle, int32_t, int32_t, int32_t) const = 0;
41     virtual void set3iv(UniformHandle, int arrayCount, const int v[]) const = 0;
42     virtual void set3f(UniformHandle, float, float, float) const = 0;
43     virtual void set3fv(UniformHandle, int arrayCount, const float v[]) const = 0;
44     virtual void set4i(UniformHandle, int32_t, int32_t, int32_t, int32_t) const = 0;
45     virtual void set4iv(UniformHandle, int arrayCount, const int v[]) const = 0;
46     virtual void set4f(UniformHandle, float, float, float, float) const = 0;
47     virtual void set4fv(UniformHandle, int arrayCount, const float v[]) const = 0;
48     // matrices are column-major, the first three upload a single matrix, the latter three upload
49     // arrayCount matrices into a uniform array.
50     virtual void setMatrix2f(UniformHandle, const float matrix[]) const = 0;
51     virtual void setMatrix3f(UniformHandle, const float matrix[]) const = 0;
52     virtual void setMatrix4f(UniformHandle, const float matrix[]) const = 0;
53     virtual void setMatrix2fv(UniformHandle, int arrayCount, const float matrices[]) const = 0;
54     virtual void setMatrix3fv(UniformHandle, int arrayCount, const float matrices[]) const = 0;
55     virtual void setMatrix4fv(UniformHandle, int arrayCount, const float matrices[]) const = 0;
56 
57     // convenience method for uploading a SkMatrix to a 3x3 matrix uniform
58     void setSkMatrix(UniformHandle, const SkMatrix&) const;
59     // convenience method for uploading a SkMatrix to a 4x4 matrix uniform
60     void setSkM44(UniformHandle, const SkM44&) const;
61 
62     enum class Specialized : bool { kNo = false, kYes = true };
63 
64     /**
65      * Sets runtime effect uniform values. The Specialized span is optional. If it is non-empty
66      * then it should be the same size as the Uniform span. Uniforms for which the Specialized value
67      * is kYes will be skipped and the UniformHandle span should have an entry for each
68      * kNo value. If Specialized is empty then the Uniform and UniformHandle spans should have the
69      * same size.
70      */
71     void setRuntimeEffectUniforms(SkSpan<const SkRuntimeEffect::Uniform>,
72                                   SkSpan<const UniformHandle>,
73                                   SkSpan<const Specialized>,
74                                   const void* src) const;
75 
setRuntimeEffectUniforms(SkSpan<const SkRuntimeEffect::Uniform> uniforms,SkSpan<const UniformHandle> handles,const void * src)76     void setRuntimeEffectUniforms(SkSpan<const SkRuntimeEffect::Uniform> uniforms,
77                                   SkSpan<const UniformHandle>            handles,
78                                   const void*                            src) const {
79         this->setRuntimeEffectUniforms(uniforms, handles, {}, src);
80     }
81 
82 protected:
GrGLSLProgramDataManager()83     GrGLSLProgramDataManager() {}
84 
85 private:
86     GrGLSLProgramDataManager(const GrGLSLProgramDataManager&) = delete;
87     GrGLSLProgramDataManager& operator=(const GrGLSLProgramDataManager&) = delete;
88 
89     using INHERITED = SkNoncopyable;
90 };
91 
92 #endif
93