Caches.cpp revision ada830f639591b99c3e40de22b07296c7932a33f 
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#if RENDER_LAYERS_AS_REGIONS
58    LOGD("Layers will be composited as regions");
59#endif
60}
61
62Caches::~Caches() {
63    delete[] mRegionMesh;
64}
65
66///////////////////////////////////////////////////////////////////////////////
67// Debug
68///////////////////////////////////////////////////////////////////////////////
69
70void Caches::dumpMemoryUsage() {
71    LOGD("Current memory usage / total memory usage (bytes):");
72    LOGD("  TextureCache         %8d / %8d", textureCache.getSize(), textureCache.getMaxSize());
73    LOGD("  LayerCache           %8d / %8d", layerCache.getSize(), layerCache.getMaxSize());
74    LOGD("  GradientCache        %8d / %8d", gradientCache.getSize(), gradientCache.getMaxSize());
75    LOGD("  PathCache            %8d / %8d", pathCache.getSize(), pathCache.getMaxSize());
76    LOGD("  TextDropShadowCache  %8d / %8d", dropShadowCache.getSize(),
77            dropShadowCache.getMaxSize());
78    for (uint32_t i = 0; i < fontRenderer.getFontRendererCount(); i++) {
79        const uint32_t size = fontRenderer.getFontRendererSize(i);
80        LOGD("  FontRenderer %d       %8d / %8d", i, size, size);
81    }
82    LOGD("Other:");
83    LOGD("  FboCache             %8d / %8d", fboCache.getSize(), fboCache.getMaxSize());
84    LOGD("  PatchCache           %8d / %8d", patchCache.getSize(), patchCache.getMaxSize());
85
86    uint32_t total = 0;
87    total += textureCache.getSize();
88    total += layerCache.getSize();
89    total += gradientCache.getSize();
90    total += pathCache.getSize();
91    total += dropShadowCache.getSize();
92    for (uint32_t i = 0; i < fontRenderer.getFontRendererCount(); i++) {
93        total += fontRenderer.getFontRendererSize(i);
94    }
95
96    LOGD("Total memory usage:");
97    LOGD("  %d bytes, %.2f MB", total, total / 1024.0f / 1024.0f);
98    LOGD("\n");
99}
100
101///////////////////////////////////////////////////////////////////////////////
102// Memory management
103///////////////////////////////////////////////////////////////////////////////
104
105void Caches::clearGarbage() {
106    textureCache.clearGarbage();
107    gradientCache.clearGarbage();
108    pathCache.clearGarbage();
109
110    Mutex::Autolock _l(mGarbageLock);
111
112    size_t count = mLayerGarbage.size();
113    for (size_t i = 0; i < count; i++) {
114        Layer* layer = mLayerGarbage.itemAt(i);
115        if (layer) {
116            if (layer->fbo) glDeleteFramebuffers(1, &layer->fbo);
117            if (layer->texture) glDeleteTextures(1, &layer->texture);
118
119            delete layer;
120        }
121    }
122    mLayerGarbage.clear();
123}
124
125void Caches::deleteLayerDeferred(Layer* layer) {
126    Mutex::Autolock _l(mGarbageLock);
127    mLayerGarbage.push(layer);
128}
129
130///////////////////////////////////////////////////////////////////////////////
131// VBO
132///////////////////////////////////////////////////////////////////////////////
133
134void Caches::bindMeshBuffer() {
135    bindMeshBuffer(meshBuffer);
136}
137
138void Caches::bindMeshBuffer(const GLuint buffer) {
139    if (mCurrentBuffer != buffer) {
140        glBindBuffer(GL_ARRAY_BUFFER, buffer);
141        mCurrentBuffer = buffer;
142    }
143}
144
145void Caches::unbindMeshBuffer() {
146    if (mCurrentBuffer) {
147        glBindBuffer(GL_ARRAY_BUFFER, 0);
148        mCurrentBuffer = 0;
149    }
150}
151
152TextureVertex* Caches::getRegionMesh() {
153    // Create the mesh, 2 triangles and 4 vertices per rectangle in the region
154    if (!mRegionMesh) {
155        mRegionMesh = new TextureVertex[REGION_MESH_QUAD_COUNT * 4];
156
157        uint16_t* regionIndices = new uint16_t[REGION_MESH_QUAD_COUNT * 6];
158        for (int i = 0; i < REGION_MESH_QUAD_COUNT; i++) {
159            uint16_t quad = i * 4;
160            int index = i * 6;
161            regionIndices[index    ] = quad;       // top-left
162            regionIndices[index + 1] = quad + 1;   // top-right
163            regionIndices[index + 2] = quad + 2;   // bottom-left
164            regionIndices[index + 3] = quad + 2;   // bottom-left
165            regionIndices[index + 4] = quad + 1;   // top-right
166            regionIndices[index + 5] = quad + 3;   // bottom-right
167        }
168
169        glGenBuffers(1, &mRegionMeshIndices);
170        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mRegionMeshIndices);
171        glBufferData(GL_ELEMENT_ARRAY_BUFFER, REGION_MESH_QUAD_COUNT * 6 * sizeof(uint16_t),
172                regionIndices, GL_STATIC_DRAW);
173
174        delete[] regionIndices;
175    } else {
176        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mRegionMeshIndices);
177    }
178
179    return mRegionMesh;
180}
181
182}; // namespace uirenderer
183}; // namespace android
184