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 "GrResourceHandle.h"
12#include "SkTypes.h"
13
14class SkMatrix;
15class SkMatrix44;
16
17/** Manages the resources used by a shader program.
18 * The resources are objects the program uses to communicate with the
19 * application code.
20 */
21class GrGLSLProgramDataManager : SkNoncopyable {
22public:
23    GR_DEFINE_RESOURCE_HANDLE_CLASS(UniformHandle);
24
25    virtual ~GrGLSLProgramDataManager() {}
26
27    /** Functions for uploading uniform values. The varities ending in v can be used to upload to an
28     *  array of uniforms. arrayCount must be <= the array count of the uniform.
29     */
30    virtual void set1i(UniformHandle, int32_t) const = 0;
31    virtual void set1iv(UniformHandle, int arrayCount, const int v[]) const = 0;
32    virtual void set1f(UniformHandle, float v0) const = 0;
33    virtual void set1fv(UniformHandle, int arrayCount, const float v[]) const = 0;
34    virtual void set2f(UniformHandle, float, float) const = 0;
35    virtual void set2fv(UniformHandle, int arrayCount, const float v[]) const = 0;
36    virtual void set3f(UniformHandle, float, float, float) const = 0;
37    virtual void set3fv(UniformHandle, int arrayCount, const float v[]) const = 0;
38    virtual void set4f(UniformHandle, float, float, float, float) const = 0;
39    virtual void set4fv(UniformHandle, int arrayCount, const float v[]) const = 0;
40    // matrices are column-major, the first three upload a single matrix, the latter three upload
41    // arrayCount matrices into a uniform array.
42    virtual void setMatrix2f(UniformHandle, const float matrix[]) const = 0;
43    virtual void setMatrix3f(UniformHandle, const float matrix[]) const = 0;
44    virtual void setMatrix4f(UniformHandle, const float matrix[]) const = 0;
45    virtual void setMatrix2fv(UniformHandle, int arrayCount, const float matrices[]) const = 0;
46    virtual void setMatrix3fv(UniformHandle, int arrayCount, const float matrices[]) const = 0;
47    virtual void setMatrix4fv(UniformHandle, int arrayCount, const float matrices[]) const = 0;
48
49    // convenience method for uploading a SkMatrix to a 3x3 matrix uniform
50    void setSkMatrix(UniformHandle, const SkMatrix&) const;
51
52    // convenience method for uploading a SkMatrix44 to a 4x4 matrix uniform
53    void setSkMatrix44(UniformHandle, const SkMatrix44&) const;
54
55    // for nvpr only
56    GR_DEFINE_RESOURCE_HANDLE_CLASS(VaryingHandle);
57    virtual void setPathFragmentInputTransform(VaryingHandle u, int components,
58                                               const SkMatrix& matrix) const = 0;
59
60protected:
61    GrGLSLProgramDataManager() {}
62
63private:
64    typedef SkNoncopyable INHERITED;
65};
66
67#endif
68