Caches.cpp revision fe48f65922d4a3cc4aefe058cee5acec51504a20 
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#define LOG_TAG "OpenGLRenderer"
18
19#include <utils/Log.h>
20
21#include "Caches.h"
22#include "Properties.h"
23
24namespace android {
25
26#ifdef USE_OPENGL_RENDERER
27using namespace uirenderer;
28ANDROID_SINGLETON_STATIC_INSTANCE(Caches);
29#endif
30
31namespace uirenderer {
32
33///////////////////////////////////////////////////////////////////////////////
34// Constructors/destructor
35///////////////////////////////////////////////////////////////////////////////
36
37Caches::Caches(): Singleton<Caches>(), blend(false), lastSrcMode(GL_ZERO),
38        lastDstMode(GL_ZERO), currentProgram(NULL) {
39    GLint maxTextureUnits;
40    glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
41    if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) {
42        LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT);
43    }
44
45    glGenBuffers(1, &meshBuffer);
46    glBindBuffer(GL_ARRAY_BUFFER, meshBuffer);
47    glBufferData(GL_ARRAY_BUFFER, sizeof(gMeshVertices), gMeshVertices, GL_STATIC_DRAW);
48
49    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
50
51    mCurrentBuffer = meshBuffer;
52    mRegionMesh = NULL;
53
54    mDebugLevel = readDebugLevel();
55    LOGD("Enabling debug mode %d", mDebugLevel);
56}
57
58Caches::~Caches() {
59    delete[] mRegionMesh;
60}
61
62///////////////////////////////////////////////////////////////////////////////
63// Debug
64///////////////////////////////////////////////////////////////////////////////
65
66void Caches::dumpMemoryUsage() {
67    LOGD("Current memory usage / total memory usage (bytes):");
68    LOGD("  TextureCache         %8d / %8d", textureCache.getSize(), textureCache.getMaxSize());
69    LOGD("  LayerCache           %8d / %8d", layerCache.getSize(), layerCache.getMaxSize());
70    LOGD("  GradientCache        %8d / %8d", gradientCache.getSize(), gradientCache.getMaxSize());
71    LOGD("  PathCache            %8d / %8d", pathCache.getSize(), pathCache.getMaxSize());
72    LOGD("  TextDropShadowCache  %8d / %8d", dropShadowCache.getSize(),
73            dropShadowCache.getMaxSize());
74    for (uint32_t i = 0; i < fontRenderer.getFontRendererCount(); i++) {
75        const uint32_t size = fontRenderer.getFontRendererSize(i);
76        LOGD("  FontRenderer %d       %8d / %8d", i, size, size);
77    }
78    LOGD("Other:");
79    LOGD("  FboCache             %8d / %8d", fboCache.getSize(), fboCache.getMaxSize());
80    LOGD("  PatchCache           %8d / %8d", patchCache.getSize(), patchCache.getMaxSize());
81
82    uint32_t total = 0;
83    total += textureCache.getSize();
84    total += layerCache.getSize();
85    total += gradientCache.getSize();
86    total += pathCache.getSize();
87    total += dropShadowCache.getSize();
88    for (uint32_t i = 0; i < fontRenderer.getFontRendererCount(); i++) {
89        total += fontRenderer.getFontRendererSize(i);
90    }
91
92    LOGD("Total memory usage:");
93    LOGD("  %d bytes, %.2f MB", total, total / 1024.0f / 1024.0f);
94    LOGD("\n");
95}
96
97///////////////////////////////////////////////////////////////////////////////
98// Memory management
99///////////////////////////////////////////////////////////////////////////////
100
101void Caches::clearGarbage() {
102    textureCache.clearGarbage();
103    gradientCache.clearGarbage();
104    pathCache.clearGarbage();
105}
106
107///////////////////////////////////////////////////////////////////////////////
108// VBO
109///////////////////////////////////////////////////////////////////////////////
110
111void Caches::bindMeshBuffer() {
112    bindMeshBuffer(meshBuffer);
113}
114
115void Caches::bindMeshBuffer(const GLuint buffer) {
116    if (mCurrentBuffer != buffer) {
117        glBindBuffer(GL_ARRAY_BUFFER, buffer);
118        mCurrentBuffer = buffer;
119    }
120}
121
122void Caches::unbindMeshBuffer() {
123    if (mCurrentBuffer) {
124        glBindBuffer(GL_ARRAY_BUFFER, 0);
125        mCurrentBuffer = 0;
126    }
127}
128
129TextureVertex* Caches::getRegionMesh() {
130    // Create the mesh, 2 triangles and 4 vertices per rectangle in the region
131    if (!mRegionMesh) {
132        mRegionMesh = new TextureVertex[REGION_MESH_QUAD_COUNT * 4];
133
134        uint16_t* regionIndices = new uint16_t[REGION_MESH_QUAD_COUNT * 6];
135        for (int i = 0; i < REGION_MESH_QUAD_COUNT; i++) {
136            uint16_t quad = i * 4;
137            int index = i * 6;
138            regionIndices[index    ] = quad;       // top-left
139            regionIndices[index + 1] = quad + 1;   // top-right
140            regionIndices[index + 2] = quad + 2;   // bottom-left
141            regionIndices[index + 3] = quad + 2;   // bottom-left
142            regionIndices[index + 4] = quad + 1;   // top-right
143            regionIndices[index + 5] = quad + 3;   // bottom-right
144        }
145
146        glGenBuffers(1, &mRegionMeshIndices);
147        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mRegionMeshIndices);
148        glBufferData(GL_ELEMENT_ARRAY_BUFFER, REGION_MESH_QUAD_COUNT * 6 * sizeof(uint16_t),
149                regionIndices, GL_STATIC_DRAW);
150
151        delete[] regionIndices;
152    } else {
153        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mRegionMeshIndices);
154    }
155
156    return mRegionMesh;
157}
158
159}; // namespace uirenderer
160}; // namespace android
161