Caches.cpp revision 5baa3a62a97544669fba6d65a11c07f252e654dd 
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#include <utils/String8.h>
21
22#include "Caches.h"
23#include "Properties.h"
24#include "LayerRenderer.h"
25
26namespace android {
27
28#ifdef USE_OPENGL_RENDERER
29using namespace uirenderer;
30ANDROID_SINGLETON_STATIC_INSTANCE(Caches);
31#endif
32
33namespace uirenderer {
34
35///////////////////////////////////////////////////////////////////////////////
36// Macros
37///////////////////////////////////////////////////////////////////////////////
38
39#if DEBUG_CACHE_FLUSH
40    #define FLUSH_LOGD(...) ALOGD(__VA_ARGS__)
41#else
42    #define FLUSH_LOGD(...)
43#endif
44
45///////////////////////////////////////////////////////////////////////////////
46// Constructors/destructor
47///////////////////////////////////////////////////////////////////////////////
48
49Caches::Caches(): Singleton<Caches>(), mInitialized(false) {
50    GLint maxTextureUnits;
51    glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
52    if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) {
53        LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT);
54    }
55
56    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
57
58    init();
59
60    mDebugLevel = readDebugLevel();
61    ALOGD("Enabling debug mode %d", mDebugLevel);
62
63#if RENDER_LAYERS_AS_REGIONS
64    INIT_LOGD("Layers will be composited as regions");
65#endif
66}
67
68void Caches::init() {
69    if (mInitialized) return;
70
71    glGenBuffers(1, &meshBuffer);
72    glBindBuffer(GL_ARRAY_BUFFER, meshBuffer);
73    glBufferData(GL_ARRAY_BUFFER, sizeof(gMeshVertices), gMeshVertices, GL_STATIC_DRAW);
74
75    mCurrentBuffer = meshBuffer;
76    mCurrentIndicesBuffer = 0;
77    mCurrentPositionPointer = this;
78    mCurrentTexCoordsPointer = this;
79
80    mTexCoordsArrayEnabled = false;
81
82    mScissorX = mScissorY = mScissorWidth = mScissorHeight = 0;
83
84    glActiveTexture(gTextureUnits[0]);
85    mTextureUnit = 0;
86
87    mRegionMesh = NULL;
88
89    blend = false;
90    lastSrcMode = GL_ZERO;
91    lastDstMode = GL_ZERO;
92    currentProgram = NULL;
93
94    mInitialized = true;
95}
96
97void Caches::terminate() {
98    if (!mInitialized) return;
99
100    glDeleteBuffers(1, &meshBuffer);
101    mCurrentBuffer = 0;
102
103    glDeleteBuffers(1, &mRegionMeshIndices);
104    delete[] mRegionMesh;
105    mRegionMesh = NULL;
106
107    fboCache.clear();
108
109    programCache.clear();
110    currentProgram = NULL;
111
112    mInitialized = false;
113}
114
115///////////////////////////////////////////////////////////////////////////////
116// Debug
117///////////////////////////////////////////////////////////////////////////////
118
119void Caches::dumpMemoryUsage() {
120    String8 stringLog;
121    dumpMemoryUsage(stringLog);
122    ALOGD("%s", stringLog.string());
123}
124
125void Caches::dumpMemoryUsage(String8 &log) {
126    log.appendFormat("Current memory usage / total memory usage (bytes):\n");
127    log.appendFormat("  TextureCache         %8d / %8d\n",
128            textureCache.getSize(), textureCache.getMaxSize());
129    log.appendFormat("  LayerCache           %8d / %8d\n",
130            layerCache.getSize(), layerCache.getMaxSize());
131    log.appendFormat("  GradientCache        %8d / %8d\n",
132            gradientCache.getSize(), gradientCache.getMaxSize());
133    log.appendFormat("  PathCache            %8d / %8d\n",
134            pathCache.getSize(), pathCache.getMaxSize());
135    log.appendFormat("  CircleShapeCache     %8d / %8d\n",
136            circleShapeCache.getSize(), circleShapeCache.getMaxSize());
137    log.appendFormat("  OvalShapeCache       %8d / %8d\n",
138            ovalShapeCache.getSize(), ovalShapeCache.getMaxSize());
139    log.appendFormat("  RoundRectShapeCache  %8d / %8d\n",
140            roundRectShapeCache.getSize(), roundRectShapeCache.getMaxSize());
141    log.appendFormat("  RectShapeCache       %8d / %8d\n",
142            rectShapeCache.getSize(), rectShapeCache.getMaxSize());
143    log.appendFormat("  ArcShapeCache        %8d / %8d\n",
144            arcShapeCache.getSize(), arcShapeCache.getMaxSize());
145    log.appendFormat("  TextDropShadowCache  %8d / %8d\n", dropShadowCache.getSize(),
146            dropShadowCache.getMaxSize());
147    for (uint32_t i = 0; i < fontRenderer.getFontRendererCount(); i++) {
148        const uint32_t size = fontRenderer.getFontRendererSize(i);
149        log.appendFormat("  FontRenderer %d       %8d / %8d\n", i, size, size);
150    }
151    log.appendFormat("Other:\n");
152    log.appendFormat("  FboCache             %8d / %8d\n",
153            fboCache.getSize(), fboCache.getMaxSize());
154    log.appendFormat("  PatchCache           %8d / %8d\n",
155            patchCache.getSize(), patchCache.getMaxSize());
156
157    uint32_t total = 0;
158    total += textureCache.getSize();
159    total += layerCache.getSize();
160    total += gradientCache.getSize();
161    total += pathCache.getSize();
162    total += dropShadowCache.getSize();
163    total += roundRectShapeCache.getSize();
164    total += circleShapeCache.getSize();
165    total += ovalShapeCache.getSize();
166    total += rectShapeCache.getSize();
167    total += arcShapeCache.getSize();
168    for (uint32_t i = 0; i < fontRenderer.getFontRendererCount(); i++) {
169        total += fontRenderer.getFontRendererSize(i);
170    }
171
172    log.appendFormat("Total memory usage:\n");
173    log.appendFormat("  %d bytes, %.2f MB\n", total, total / 1024.0f / 1024.0f);
174}
175
176///////////////////////////////////////////////////////////////////////////////
177// Memory management
178///////////////////////////////////////////////////////////////////////////////
179
180void Caches::clearGarbage() {
181    textureCache.clearGarbage();
182    pathCache.clearGarbage();
183
184    Mutex::Autolock _l(mGarbageLock);
185
186    size_t count = mLayerGarbage.size();
187    for (size_t i = 0; i < count; i++) {
188        Layer* layer = mLayerGarbage.itemAt(i);
189        LayerRenderer::destroyLayer(layer);
190    }
191    mLayerGarbage.clear();
192}
193
194void Caches::deleteLayerDeferred(Layer* layer) {
195    Mutex::Autolock _l(mGarbageLock);
196    mLayerGarbage.push(layer);
197}
198
199void Caches::flush(FlushMode mode) {
200    FLUSH_LOGD("Flushing caches (mode %d)", mode);
201
202    clearGarbage();
203
204    switch (mode) {
205        case kFlushMode_Full:
206            textureCache.clear();
207            patchCache.clear();
208            dropShadowCache.clear();
209            gradientCache.clear();
210            fontRenderer.clear();
211            // fall through
212        case kFlushMode_Moderate:
213            fontRenderer.flush();
214            textureCache.flush();
215            pathCache.clear();
216            roundRectShapeCache.clear();
217            circleShapeCache.clear();
218            ovalShapeCache.clear();
219            rectShapeCache.clear();
220            arcShapeCache.clear();
221            // fall through
222        case kFlushMode_Layers:
223            layerCache.clear();
224            break;
225    }
226}
227
228///////////////////////////////////////////////////////////////////////////////
229// VBO
230///////////////////////////////////////////////////////////////////////////////
231
232bool Caches::bindMeshBuffer() {
233    return bindMeshBuffer(meshBuffer);
234}
235
236bool Caches::bindMeshBuffer(const GLuint buffer) {
237    if (mCurrentBuffer != buffer) {
238        glBindBuffer(GL_ARRAY_BUFFER, buffer);
239        mCurrentBuffer = buffer;
240        return true;
241    }
242    return false;
243}
244
245bool Caches::unbindMeshBuffer() {
246    if (mCurrentBuffer) {
247        glBindBuffer(GL_ARRAY_BUFFER, 0);
248        mCurrentBuffer = 0;
249        return true;
250    }
251    return false;
252}
253
254bool Caches::bindIndicesBuffer(const GLuint buffer) {
255    if (mCurrentIndicesBuffer != buffer) {
256        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
257        mCurrentIndicesBuffer = buffer;
258        return true;
259    }
260    return false;
261}
262
263bool Caches::unbindIndicesBuffer() {
264    if (mCurrentIndicesBuffer) {
265        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
266        mCurrentIndicesBuffer = 0;
267        return true;
268    }
269    return false;
270}
271
272void Caches::bindPositionVertexPointer(bool force, GLuint slot, GLvoid* vertices, GLsizei stride) {
273    if (force || vertices != mCurrentPositionPointer) {
274        glVertexAttribPointer(slot, 2, GL_FLOAT, GL_FALSE, stride, vertices);
275        mCurrentPositionPointer = vertices;
276    }
277}
278
279void Caches::bindTexCoordsVertexPointer(bool force, GLuint slot, GLvoid* vertices) {
280    if (force || vertices != mCurrentTexCoordsPointer) {
281        glVertexAttribPointer(slot, 2, GL_FLOAT, GL_FALSE, gMeshStride, vertices);
282        mCurrentTexCoordsPointer = vertices;
283    }
284}
285
286void Caches::resetVertexPointers() {
287    mCurrentPositionPointer = this;
288    mCurrentTexCoordsPointer = this;
289}
290
291void Caches::resetTexCoordsVertexPointer() {
292    mCurrentTexCoordsPointer = this;
293}
294
295void Caches::enableTexCoordsVertexArray() {
296    if (!mTexCoordsArrayEnabled) {
297        glEnableVertexAttribArray(Program::kBindingTexCoords);
298        mCurrentTexCoordsPointer = this;
299        mTexCoordsArrayEnabled = true;
300    }
301}
302
303void Caches::disbaleTexCoordsVertexArray() {
304    if (mTexCoordsArrayEnabled) {
305        glDisableVertexAttribArray(Program::kBindingTexCoords);
306        mTexCoordsArrayEnabled = false;
307    }
308}
309
310void Caches::activeTexture(GLuint textureUnit) {
311    if (mTextureUnit != textureUnit) {
312        glActiveTexture(gTextureUnits[textureUnit]);
313        mTextureUnit = textureUnit;
314    }
315}
316
317void Caches::setScissor(GLint x, GLint y, GLint width, GLint height) {
318    if (x != mScissorX || y != mScissorY || width != mScissorWidth || height != mScissorHeight) {
319        glScissor(x, y, width, height);
320
321        mScissorX = x;
322        mScissorY = y;
323        mScissorWidth = width;
324        mScissorHeight = height;
325    }
326}
327
328void Caches::resetScissor() {
329    mScissorX = mScissorY = mScissorWidth = mScissorHeight = 0;
330}
331
332TextureVertex* Caches::getRegionMesh() {
333    // Create the mesh, 2 triangles and 4 vertices per rectangle in the region
334    if (!mRegionMesh) {
335        mRegionMesh = new TextureVertex[REGION_MESH_QUAD_COUNT * 4];
336
337        uint16_t* regionIndices = new uint16_t[REGION_MESH_QUAD_COUNT * 6];
338        for (int i = 0; i < REGION_MESH_QUAD_COUNT; i++) {
339            uint16_t quad = i * 4;
340            int index = i * 6;
341            regionIndices[index    ] = quad;       // top-left
342            regionIndices[index + 1] = quad + 1;   // top-right
343            regionIndices[index + 2] = quad + 2;   // bottom-left
344            regionIndices[index + 3] = quad + 2;   // bottom-left
345            regionIndices[index + 4] = quad + 1;   // top-right
346            regionIndices[index + 5] = quad + 3;   // bottom-right
347        }
348
349        glGenBuffers(1, &mRegionMeshIndices);
350        bindIndicesBuffer(mRegionMeshIndices);
351        glBufferData(GL_ELEMENT_ARRAY_BUFFER, REGION_MESH_QUAD_COUNT * 6 * sizeof(uint16_t),
352                regionIndices, GL_STATIC_DRAW);
353
354        delete[] regionIndices;
355    } else {
356        bindIndicesBuffer(mRegionMeshIndices);
357    }
358
359    return mRegionMesh;
360}
361
362}; // namespace uirenderer
363}; // namespace android
364