Caches.h revision e190aa69756aecfaffabdd4c6d32cb6b3220d842 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ANDROID_HWUI_CACHES_H
18#define ANDROID_HWUI_CACHES_H
19
20#ifndef LOG_TAG
21    #define LOG_TAG "OpenGLRenderer"
22#endif
23
24#include <utils/Singleton.h>
25
26#include "Extensions.h"
27#include "FontRenderer.h"
28#include "GammaFontRenderer.h"
29#include "TextureCache.h"
30#include "LayerCache.h"
31#include "GradientCache.h"
32#include "PatchCache.h"
33#include "ProgramCache.h"
34#include "PathCache.h"
35#include "TextDropShadowCache.h"
36#include "FboCache.h"
37#include "Line.h"
38#include "ResourceCache.h"
39
40namespace android {
41namespace uirenderer {
42
43///////////////////////////////////////////////////////////////////////////////
44// Globals
45///////////////////////////////////////////////////////////////////////////////
46
47#define REQUIRED_TEXTURE_UNITS_COUNT 3
48
49#define REGION_MESH_QUAD_COUNT 512
50
51// Generates simple and textured vertices
52#define FV(x, y, u, v) { { x, y }, { u, v } }
53
54// This array is never used directly but used as a memcpy source in the
55// OpenGLRenderer constructor
56static const TextureVertex gMeshVertices[] = {
57        FV(0.0f, 0.0f, 0.0f, 0.0f),
58        FV(1.0f, 0.0f, 1.0f, 0.0f),
59        FV(0.0f, 1.0f, 0.0f, 1.0f),
60        FV(1.0f, 1.0f, 1.0f, 1.0f)
61};
62static const GLsizei gMeshStride = sizeof(TextureVertex);
63static const GLsizei gMeshTextureOffset = 2 * sizeof(float);
64static const GLsizei gMeshCount = 4;
65
66///////////////////////////////////////////////////////////////////////////////
67// Debug
68///////////////////////////////////////////////////////////////////////////////
69
70struct CacheLogger {
71    CacheLogger() {
72        LOGD("Creating caches");
73    }
74}; // struct CacheLogger
75
76///////////////////////////////////////////////////////////////////////////////
77// Caches
78///////////////////////////////////////////////////////////////////////////////
79
80class Caches: public Singleton<Caches> {
81    Caches();
82    ~Caches();
83
84    friend class Singleton<Caches>;
85
86    CacheLogger mLogger;
87
88    GLuint mCurrentBuffer;
89
90    // Used to render layers
91    TextureVertex* mRegionMesh;
92    GLuint mRegionMeshIndices;
93
94public:
95    /**
96     * Indicates whether the renderer is in debug mode.
97     * This debug mode provides limited information to app developers.
98     */
99    DebugLevel getDebugLevel() const {
100        return mDebugLevel;
101    }
102
103    /**
104     * Binds the VBO used to render simple textured quads.
105     */
106    void bindMeshBuffer();
107
108    /**
109     * Binds the specified VBO if needed.
110     */
111    void bindMeshBuffer(const GLuint buffer);
112
113    /**
114     * Unbinds the VBO used to render simple textured quads.
115     */
116    void unbindMeshBuffer();
117
118    /**
119     * Returns the mesh used to draw regions. Calling this method will
120     * bind a VBO of type GL_ELEMENT_ARRAY_BUFFER that contains the
121     * indices for the region mesh.
122     */
123    TextureVertex* getRegionMesh();
124
125    /**
126     * Displays the memory usage of each cache and the total sum.
127     */
128    void dumpMemoryUsage();
129
130    bool blend;
131    GLenum lastSrcMode;
132    GLenum lastDstMode;
133    Program* currentProgram;
134
135    // VBO to draw with
136    GLuint meshBuffer;
137
138    // GL extensions
139    Extensions extensions;
140
141    // Misc
142    GLint maxTextureSize;
143
144    TextureCache textureCache;
145    LayerCache layerCache;
146    GradientCache gradientCache;
147    ProgramCache programCache;
148    PathCache pathCache;
149    PatchCache patchCache;
150    TextDropShadowCache dropShadowCache;
151    FboCache fboCache;
152    GammaFontRenderer fontRenderer;
153    ResourceCache resourceCache;
154
155    Line line;
156
157private:
158    DebugLevel mDebugLevel;
159}; // class Caches
160
161}; // namespace uirenderer
162}; // namespace android
163
164#endif // ANDROID_HWUI_CACHES_H
165