blob: 5a57b9f6aaecbd450a74cf3effabbccd0e8768eb (
plain)
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
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef RENDERSTATE_TEXTURESTATE_H
#define RENDERSTATE_TEXTURESTATE_H
#include "Vertex.h"
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <SkXfermode.h>
#include <memory>
namespace android {
namespace uirenderer {
class TextureState {
friend class Caches; // TODO: move to RenderState
public:
/**
* Activate the specified texture unit. The texture unit must
* be specified using an integer number (0 for GL_TEXTURE0 etc.)
*/
void activateTexture(GLuint textureUnit);
/**
* Invalidate the cached value of the active texture unit.
*/
void resetActiveTexture();
/**
* Binds the specified texture as a GL_TEXTURE_2D texture.
* All texture bindings must be performed with this method or
* bindTexture(GLenum, GLuint).
*/
void bindTexture(GLuint texture);
/**
* Binds the specified texture with the specified render target.
* All texture bindings must be performed with this method or
* bindTexture(GLuint).
*/
void bindTexture(GLenum target, GLuint texture);
/**
* Deletes the specified texture and clears it from the cache
* of bound textures.
* All textures must be deleted using this method.
*/
void deleteTexture(GLuint texture);
/**
* Signals that the cache of bound textures should be cleared.
* Other users of the context may have altered which textures are bound.
*/
void resetBoundTextures();
/**
* Clear the cache of bound textures.
*/
void unbindTexture(GLuint texture);
private:
// total number of texture units available for use
static const int kTextureUnitsCount = 3;
TextureState();
GLuint mTextureUnit;
// Caches texture bindings for the GL_TEXTURE_2D target
GLuint mBoundTextures[kTextureUnitsCount];
};
} /* namespace uirenderer */
} /* namespace android */
#endif // RENDERSTATE_BLEND_H
|
