Caches.cpp revision 05f3d6e5111fd08df5cd9aae2c3d28399dc0e7f5 
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 "DisplayListRenderer.h"
24#include "Properties.h"
25#include "LayerRenderer.h"
26#include "ShadowTessellator.h"
27
28namespace android {
29
30#ifdef USE_OPENGL_RENDERER
31using namespace uirenderer;
32ANDROID_SINGLETON_STATIC_INSTANCE(Caches);
33#endif
34
35namespace uirenderer {
36
37///////////////////////////////////////////////////////////////////////////////
38// Macros
39///////////////////////////////////////////////////////////////////////////////
40
41#if DEBUG_CACHE_FLUSH
42    #define FLUSH_LOGD(...) ALOGD(__VA_ARGS__)
43#else
44    #define FLUSH_LOGD(...)
45#endif
46
47///////////////////////////////////////////////////////////////////////////////
48// Constructors/destructor
49///////////////////////////////////////////////////////////////////////////////
50
51Caches::Caches(): Singleton<Caches>(),
52        mExtensions(Extensions::getInstance()), mInitialized(false) {
53    init();
54    initFont();
55    initConstraints();
56    initProperties();
57    initStaticProperties();
58    initExtensions();
59    initTempProperties();
60
61    mDebugLevel = readDebugLevel();
62    ALOGD("Enabling debug mode %d", mDebugLevel);
63}
64
65bool Caches::init() {
66    if (mInitialized) return false;
67
68    glGenBuffers(1, &meshBuffer);
69    glBindBuffer(GL_ARRAY_BUFFER, meshBuffer);
70    glBufferData(GL_ARRAY_BUFFER, sizeof(gMeshVertices), gMeshVertices, GL_STATIC_DRAW);
71
72    mCurrentBuffer = meshBuffer;
73    mCurrentIndicesBuffer = 0;
74    mCurrentPositionPointer = this;
75    mCurrentPositionStride = 0;
76    mCurrentTexCoordsPointer = this;
77    mCurrentPixelBuffer = 0;
78
79    mTexCoordsArrayEnabled = false;
80
81    glDisable(GL_SCISSOR_TEST);
82    scissorEnabled = false;
83    mScissorX = mScissorY = mScissorWidth = mScissorHeight = 0;
84
85    glActiveTexture(gTextureUnits[0]);
86    mTextureUnit = 0;
87
88    mRegionMesh = NULL;
89    mMeshIndices = 0;
90    mShadowStripsIndices = 0;
91    blend = false;
92    lastSrcMode = GL_ZERO;
93    lastDstMode = GL_ZERO;
94    currentProgram = NULL;
95
96    mFunctorsCount = 0;
97
98    debugLayersUpdates = false;
99    debugOverdraw = false;
100    debugStencilClip = kStencilHide;
101
102    patchCache.init(*this);
103
104    mInitialized = true;
105
106    resetBoundTextures();
107
108    return true;
109}
110
111void Caches::initFont() {
112    fontRenderer = GammaFontRenderer::createRenderer();
113}
114
115void Caches::initExtensions() {
116    if (mExtensions.hasDebugMarker()) {
117        eventMark = glInsertEventMarkerEXT;
118
119        startMark = glPushGroupMarkerEXT;
120        endMark = glPopGroupMarkerEXT;
121    } else {
122        eventMark = eventMarkNull;
123        startMark = startMarkNull;
124        endMark = endMarkNull;
125    }
126
127    if (mExtensions.hasDebugLabel() && (drawDeferDisabled || drawReorderDisabled)) {
128        setLabel = glLabelObjectEXT;
129        getLabel = glGetObjectLabelEXT;
130    } else {
131        setLabel = setLabelNull;
132        getLabel = getLabelNull;
133    }
134}
135
136void Caches::initConstraints() {
137    GLint maxTextureUnits;
138    glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
139    if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) {
140        ALOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT);
141    }
142
143    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
144}
145
146void Caches::initStaticProperties() {
147    gpuPixelBuffersEnabled = false;
148
149    // OpenGL ES 3.0+ specific features
150    if (mExtensions.hasPixelBufferObjects()) {
151        char property[PROPERTY_VALUE_MAX];
152        if (property_get(PROPERTY_ENABLE_GPU_PIXEL_BUFFERS, property, "true") > 0) {
153            gpuPixelBuffersEnabled = !strcmp(property, "true");
154        }
155    }
156}
157
158bool Caches::initProperties() {
159    bool prevDebugLayersUpdates = debugLayersUpdates;
160    bool prevDebugOverdraw = debugOverdraw;
161    StencilClipDebug prevDebugStencilClip = debugStencilClip;
162
163    char property[PROPERTY_VALUE_MAX];
164    if (property_get(PROPERTY_DEBUG_LAYERS_UPDATES, property, NULL) > 0) {
165        INIT_LOGD("  Layers updates debug enabled: %s", property);
166        debugLayersUpdates = !strcmp(property, "true");
167    } else {
168        debugLayersUpdates = false;
169    }
170
171    debugOverdraw = false;
172    if (property_get(PROPERTY_DEBUG_OVERDRAW, property, NULL) > 0) {
173        INIT_LOGD("  Overdraw debug enabled: %s", property);
174        if (!strcmp(property, "show")) {
175            debugOverdraw = true;
176            mOverdrawDebugColorSet = kColorSet_Default;
177        } else if (!strcmp(property, "show_deuteranomaly")) {
178            debugOverdraw = true;
179            mOverdrawDebugColorSet = kColorSet_Deuteranomaly;
180        }
181    }
182
183    // See Properties.h for valid values
184    if (property_get(PROPERTY_DEBUG_STENCIL_CLIP, property, NULL) > 0) {
185        INIT_LOGD("  Stencil clip debug enabled: %s", property);
186        if (!strcmp(property, "hide")) {
187            debugStencilClip = kStencilHide;
188        } else if (!strcmp(property, "highlight")) {
189            debugStencilClip = kStencilShowHighlight;
190        } else if (!strcmp(property, "region")) {
191            debugStencilClip = kStencilShowRegion;
192        }
193    } else {
194        debugStencilClip = kStencilHide;
195    }
196
197    if (property_get(PROPERTY_DISABLE_DRAW_DEFER, property, "false")) {
198        drawDeferDisabled = !strcasecmp(property, "true");
199        INIT_LOGD("  Draw defer %s", drawDeferDisabled ? "disabled" : "enabled");
200    } else {
201        INIT_LOGD("  Draw defer enabled");
202    }
203
204    if (property_get(PROPERTY_DISABLE_DRAW_REORDER, property, "false")) {
205        drawReorderDisabled = !strcasecmp(property, "true");
206        INIT_LOGD("  Draw reorder %s", drawReorderDisabled ? "disabled" : "enabled");
207    } else {
208        INIT_LOGD("  Draw reorder enabled");
209    }
210
211    return (prevDebugLayersUpdates != debugLayersUpdates) ||
212            (prevDebugOverdraw != debugOverdraw) ||
213            (prevDebugStencilClip != debugStencilClip);
214}
215
216void Caches::terminate() {
217    if (!mInitialized) return;
218
219    glDeleteBuffers(1, &meshBuffer);
220    mCurrentBuffer = 0;
221
222    glDeleteBuffers(1, &mMeshIndices);
223    delete[] mRegionMesh;
224    mMeshIndices = 0;
225    mRegionMesh = NULL;
226
227    glDeleteBuffers(1, &mShadowStripsIndices);
228    mShadowStripsIndices = 0;
229
230    fboCache.clear();
231
232    programCache.clear();
233    currentProgram = NULL;
234
235    assetAtlas.terminate();
236
237    patchCache.clear();
238
239    clearGarbage();
240
241    mInitialized = false;
242}
243
244///////////////////////////////////////////////////////////////////////////////
245// Debug
246///////////////////////////////////////////////////////////////////////////////
247
248uint32_t Caches::getOverdrawColor(uint32_t amount) const {
249    static uint32_t sOverdrawColors[2][4] = {
250            { 0x2f0000ff, 0x2f00ff00, 0x3fff0000, 0x7fff0000 },
251            { 0x2f0000ff, 0x4fffff00, 0x5fff8ad8, 0x7fff0000 }
252    };
253    if (amount < 1) amount = 1;
254    if (amount > 4) amount = 4;
255    return sOverdrawColors[mOverdrawDebugColorSet][amount - 1];
256}
257
258void Caches::dumpMemoryUsage() {
259    String8 stringLog;
260    dumpMemoryUsage(stringLog);
261    ALOGD("%s", stringLog.string());
262}
263
264void Caches::dumpMemoryUsage(String8 &log) {
265    log.appendFormat("Current memory usage / total memory usage (bytes):\n");
266    log.appendFormat("  TextureCache         %8d / %8d\n",
267            textureCache.getSize(), textureCache.getMaxSize());
268    log.appendFormat("  LayerCache           %8d / %8d\n",
269            layerCache.getSize(), layerCache.getMaxSize());
270    log.appendFormat("  RenderBufferCache    %8d / %8d\n",
271            renderBufferCache.getSize(), renderBufferCache.getMaxSize());
272    log.appendFormat("  GradientCache        %8d / %8d\n",
273            gradientCache.getSize(), gradientCache.getMaxSize());
274    log.appendFormat("  PathCache            %8d / %8d\n",
275            pathCache.getSize(), pathCache.getMaxSize());
276    log.appendFormat("  TessellationCache    %8d / %8d\n",
277            tessellationCache.getSize(), tessellationCache.getMaxSize());
278    log.appendFormat("  TextDropShadowCache  %8d / %8d\n", dropShadowCache.getSize(),
279            dropShadowCache.getMaxSize());
280    log.appendFormat("  PatchCache           %8d / %8d\n",
281            patchCache.getSize(), patchCache.getMaxSize());
282    for (uint32_t i = 0; i < fontRenderer->getFontRendererCount(); i++) {
283        const uint32_t sizeA8 = fontRenderer->getFontRendererSize(i, GL_ALPHA);
284        const uint32_t sizeRGBA = fontRenderer->getFontRendererSize(i, GL_RGBA);
285        log.appendFormat("  FontRenderer %d A8    %8d / %8d\n", i, sizeA8, sizeA8);
286        log.appendFormat("  FontRenderer %d RGBA  %8d / %8d\n", i, sizeRGBA, sizeRGBA);
287        log.appendFormat("  FontRenderer %d total %8d / %8d\n", i, sizeA8 + sizeRGBA,
288                sizeA8 + sizeRGBA);
289    }
290    log.appendFormat("Other:\n");
291    log.appendFormat("  FboCache             %8d / %8d\n",
292            fboCache.getSize(), fboCache.getMaxSize());
293
294    uint32_t total = 0;
295    total += textureCache.getSize();
296    total += layerCache.getSize();
297    total += renderBufferCache.getSize();
298    total += gradientCache.getSize();
299    total += pathCache.getSize();
300    total += tessellationCache.getSize();
301    total += dropShadowCache.getSize();
302    total += patchCache.getSize();
303    for (uint32_t i = 0; i < fontRenderer->getFontRendererCount(); i++) {
304        total += fontRenderer->getFontRendererSize(i, GL_ALPHA);
305        total += fontRenderer->getFontRendererSize(i, GL_RGBA);
306    }
307
308    log.appendFormat("Total memory usage:\n");
309    log.appendFormat("  %d bytes, %.2f MB\n", total, total / 1024.0f / 1024.0f);
310}
311
312///////////////////////////////////////////////////////////////////////////////
313// Memory management
314///////////////////////////////////////////////////////////////////////////////
315
316void Caches::clearGarbage() {
317    textureCache.clearGarbage();
318    pathCache.clearGarbage();
319    patchCache.clearGarbage();
320
321    Vector<Layer*> layers;
322
323    { // scope for the lock
324        Mutex::Autolock _l(mGarbageLock);
325        layers = mLayerGarbage;
326        mLayerGarbage.clear();
327    }
328
329    size_t count = layers.size();
330    for (size_t i = 0; i < count; i++) {
331        Layer* layer = layers.itemAt(i);
332        delete layer;
333    }
334    layers.clear();
335}
336
337void Caches::deleteLayerDeferred(Layer* layer) {
338    Mutex::Autolock _l(mGarbageLock);
339    mLayerGarbage.push(layer);
340}
341
342void Caches::flush(FlushMode mode) {
343    FLUSH_LOGD("Flushing caches (mode %d)", mode);
344
345    // We must stop tasks before clearing caches
346    if (mode > kFlushMode_Layers) {
347        tasks.stop();
348    }
349
350    switch (mode) {
351        case kFlushMode_Full:
352            textureCache.clear();
353            patchCache.clear();
354            dropShadowCache.clear();
355            gradientCache.clear();
356            fontRenderer->clear();
357            fboCache.clear();
358            dither.clear();
359            // fall through
360        case kFlushMode_Moderate:
361            fontRenderer->flush();
362            textureCache.flush();
363            pathCache.clear();
364            tessellationCache.clear();
365            // fall through
366        case kFlushMode_Layers:
367            layerCache.clear();
368            renderBufferCache.clear();
369            break;
370    }
371
372    clearGarbage();
373}
374
375///////////////////////////////////////////////////////////////////////////////
376// VBO
377///////////////////////////////////////////////////////////////////////////////
378
379bool Caches::bindMeshBuffer() {
380    return bindMeshBuffer(meshBuffer);
381}
382
383bool Caches::bindMeshBuffer(const GLuint buffer) {
384    if (mCurrentBuffer != buffer) {
385        glBindBuffer(GL_ARRAY_BUFFER, buffer);
386        mCurrentBuffer = buffer;
387        return true;
388    }
389    return false;
390}
391
392bool Caches::unbindMeshBuffer() {
393    if (mCurrentBuffer) {
394        glBindBuffer(GL_ARRAY_BUFFER, 0);
395        mCurrentBuffer = 0;
396        return true;
397    }
398    return false;
399}
400
401bool Caches::bindIndicesBufferInternal(const GLuint buffer) {
402    if (mCurrentIndicesBuffer != buffer) {
403        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
404        mCurrentIndicesBuffer = buffer;
405        return true;
406    }
407    return false;
408}
409
410bool Caches::bindQuadIndicesBuffer() {
411    if (!mMeshIndices) {
412        uint16_t* regionIndices = new uint16_t[gMaxNumberOfQuads * 6];
413        for (uint32_t i = 0; i < gMaxNumberOfQuads; i++) {
414            uint16_t quad = i * 4;
415            int index = i * 6;
416            regionIndices[index    ] = quad;       // top-left
417            regionIndices[index + 1] = quad + 1;   // top-right
418            regionIndices[index + 2] = quad + 2;   // bottom-left
419            regionIndices[index + 3] = quad + 2;   // bottom-left
420            regionIndices[index + 4] = quad + 1;   // top-right
421            regionIndices[index + 5] = quad + 3;   // bottom-right
422        }
423
424        glGenBuffers(1, &mMeshIndices);
425        bool force = bindIndicesBufferInternal(mMeshIndices);
426        glBufferData(GL_ELEMENT_ARRAY_BUFFER, gMaxNumberOfQuads * 6 * sizeof(uint16_t),
427                regionIndices, GL_STATIC_DRAW);
428
429        delete[] regionIndices;
430        return force;
431    }
432
433    return bindIndicesBufferInternal(mMeshIndices);
434}
435
436bool Caches::bindShadowIndicesBuffer() {
437    if (!mShadowStripsIndices) {
438        uint16_t* shadowIndices = new uint16_t[MAX_SHADOW_INDEX_COUNT];
439        ShadowTessellator::generateShadowIndices(shadowIndices);
440        glGenBuffers(1, &mShadowStripsIndices);
441        bool force = bindIndicesBufferInternal(mShadowStripsIndices);
442        glBufferData(GL_ELEMENT_ARRAY_BUFFER, MAX_SHADOW_INDEX_COUNT * sizeof(uint16_t),
443            shadowIndices, GL_STATIC_DRAW);
444
445        delete[] shadowIndices;
446        return force;
447    }
448
449    return bindIndicesBufferInternal(mShadowStripsIndices);
450}
451
452bool Caches::unbindIndicesBuffer() {
453    if (mCurrentIndicesBuffer) {
454        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
455        mCurrentIndicesBuffer = 0;
456        return true;
457    }
458    return false;
459}
460
461///////////////////////////////////////////////////////////////////////////////
462// PBO
463///////////////////////////////////////////////////////////////////////////////
464
465bool Caches::bindPixelBuffer(const GLuint buffer) {
466    if (mCurrentPixelBuffer != buffer) {
467        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer);
468        mCurrentPixelBuffer = buffer;
469        return true;
470    }
471    return false;
472}
473
474bool Caches::unbindPixelBuffer() {
475    if (mCurrentPixelBuffer) {
476        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
477        mCurrentPixelBuffer = 0;
478        return true;
479    }
480    return false;
481}
482
483///////////////////////////////////////////////////////////////////////////////
484// Meshes and textures
485///////////////////////////////////////////////////////////////////////////////
486
487void Caches::bindPositionVertexPointer(bool force, const GLvoid* vertices, GLsizei stride) {
488    if (force || vertices != mCurrentPositionPointer || stride != mCurrentPositionStride) {
489        GLuint slot = currentProgram->position;
490        glVertexAttribPointer(slot, 2, GL_FLOAT, GL_FALSE, stride, vertices);
491        mCurrentPositionPointer = vertices;
492        mCurrentPositionStride = stride;
493    }
494}
495
496void Caches::bindTexCoordsVertexPointer(bool force, const GLvoid* vertices, GLsizei stride) {
497    if (force || vertices != mCurrentTexCoordsPointer || stride != mCurrentTexCoordsStride) {
498        GLuint slot = currentProgram->texCoords;
499        glVertexAttribPointer(slot, 2, GL_FLOAT, GL_FALSE, stride, vertices);
500        mCurrentTexCoordsPointer = vertices;
501        mCurrentTexCoordsStride = stride;
502    }
503}
504
505void Caches::resetVertexPointers() {
506    mCurrentPositionPointer = this;
507    mCurrentTexCoordsPointer = this;
508}
509
510void Caches::resetTexCoordsVertexPointer() {
511    mCurrentTexCoordsPointer = this;
512}
513
514void Caches::enableTexCoordsVertexArray() {
515    if (!mTexCoordsArrayEnabled) {
516        glEnableVertexAttribArray(Program::kBindingTexCoords);
517        mCurrentTexCoordsPointer = this;
518        mTexCoordsArrayEnabled = true;
519    }
520}
521
522void Caches::disableTexCoordsVertexArray() {
523    if (mTexCoordsArrayEnabled) {
524        glDisableVertexAttribArray(Program::kBindingTexCoords);
525        mTexCoordsArrayEnabled = false;
526    }
527}
528
529void Caches::activeTexture(GLuint textureUnit) {
530    if (mTextureUnit != textureUnit) {
531        glActiveTexture(gTextureUnits[textureUnit]);
532        mTextureUnit = textureUnit;
533    }
534}
535
536void Caches::resetActiveTexture() {
537    mTextureUnit = -1;
538}
539
540void Caches::bindTexture(GLuint texture) {
541    if (mBoundTextures[mTextureUnit] != texture) {
542        glBindTexture(GL_TEXTURE_2D, texture);
543        mBoundTextures[mTextureUnit] = texture;
544    }
545}
546
547void Caches::bindTexture(GLenum target, GLuint texture) {
548    if (mBoundTextures[mTextureUnit] != texture) {
549        glBindTexture(target, texture);
550        mBoundTextures[mTextureUnit] = texture;
551    }
552}
553
554void Caches::deleteTexture(GLuint texture) {
555    // When glDeleteTextures() is called on a currently bound texture,
556    // OpenGL ES specifies that the texture is then considered unbound
557    // Consider the following series of calls:
558    //
559    // glGenTextures -> creates texture name 2
560    // glBindTexture(2)
561    // glDeleteTextures(2) -> 2 is now unbound
562    // glGenTextures -> can return 2 again
563    //
564    // If we don't call glBindTexture(2) after the second glGenTextures
565    // call, any texture operation will be performed on the default
566    // texture (name=0)
567
568    for (int i = 0; i < REQUIRED_TEXTURE_UNITS_COUNT; i++) {
569        if (mBoundTextures[i] == texture) {
570            mBoundTextures[i] = 0;
571        }
572    }
573    glDeleteTextures(1, &texture);
574}
575
576void Caches::resetBoundTextures() {
577    memset(mBoundTextures, 0, REQUIRED_TEXTURE_UNITS_COUNT * sizeof(GLuint));
578}
579
580///////////////////////////////////////////////////////////////////////////////
581// Scissor
582///////////////////////////////////////////////////////////////////////////////
583
584bool Caches::setScissor(GLint x, GLint y, GLint width, GLint height) {
585    if (scissorEnabled && (x != mScissorX || y != mScissorY ||
586            width != mScissorWidth || height != mScissorHeight)) {
587
588        if (x < 0) {
589            width += x;
590            x = 0;
591        }
592        if (y < 0) {
593            height += y;
594            y = 0;
595        }
596        if (width < 0) {
597            width = 0;
598        }
599        if (height < 0) {
600            height = 0;
601        }
602        glScissor(x, y, width, height);
603
604        mScissorX = x;
605        mScissorY = y;
606        mScissorWidth = width;
607        mScissorHeight = height;
608
609        return true;
610    }
611    return false;
612}
613
614bool Caches::enableScissor() {
615    if (!scissorEnabled) {
616        glEnable(GL_SCISSOR_TEST);
617        scissorEnabled = true;
618        resetScissor();
619        return true;
620    }
621    return false;
622}
623
624bool Caches::disableScissor() {
625    if (scissorEnabled) {
626        glDisable(GL_SCISSOR_TEST);
627        scissorEnabled = false;
628        return true;
629    }
630    return false;
631}
632
633void Caches::setScissorEnabled(bool enabled) {
634    if (scissorEnabled != enabled) {
635        if (enabled) glEnable(GL_SCISSOR_TEST);
636        else glDisable(GL_SCISSOR_TEST);
637        scissorEnabled = enabled;
638    }
639}
640
641void Caches::resetScissor() {
642    mScissorX = mScissorY = mScissorWidth = mScissorHeight = 0;
643}
644
645///////////////////////////////////////////////////////////////////////////////
646// Tiling
647///////////////////////////////////////////////////////////////////////////////
648
649void Caches::startTiling(GLuint x, GLuint y, GLuint width, GLuint height, bool discard) {
650    if (mExtensions.hasTiledRendering() && !debugOverdraw) {
651        glStartTilingQCOM(x, y, width, height, (discard ? GL_NONE : GL_COLOR_BUFFER_BIT0_QCOM));
652    }
653}
654
655void Caches::endTiling() {
656    if (mExtensions.hasTiledRendering() && !debugOverdraw) {
657        glEndTilingQCOM(GL_COLOR_BUFFER_BIT0_QCOM);
658    }
659}
660
661bool Caches::hasRegisteredFunctors() {
662    return mFunctorsCount > 0;
663}
664
665void Caches::registerFunctors(uint32_t functorCount) {
666    mFunctorsCount += functorCount;
667}
668
669void Caches::unregisterFunctors(uint32_t functorCount) {
670    if (functorCount > mFunctorsCount) {
671        mFunctorsCount = 0;
672    } else {
673        mFunctorsCount -= functorCount;
674    }
675}
676
677///////////////////////////////////////////////////////////////////////////////
678// Regions
679///////////////////////////////////////////////////////////////////////////////
680
681TextureVertex* Caches::getRegionMesh() {
682    // Create the mesh, 2 triangles and 4 vertices per rectangle in the region
683    if (!mRegionMesh) {
684        mRegionMesh = new TextureVertex[gMaxNumberOfQuads * 4];
685    }
686
687    return mRegionMesh;
688}
689
690///////////////////////////////////////////////////////////////////////////////
691// Temporary Properties
692///////////////////////////////////////////////////////////////////////////////
693
694void Caches::initTempProperties() {
695    propertyAmbientShadowStrength = 12;
696    propertySpotShadowStrength = 48;
697
698    propertyLightDiameter = -1.0f;
699    propertyLightPosY = -1.0f;
700    propertyLightPosZ = -1.0f;
701    propertyAmbientRatio = -1.0f;
702}
703
704void Caches::setTempProperty(const char* name, const char* value) {
705    ALOGD("setting property %s to %s", name, value);
706    if (!strcmp(name, "ambientShadowStrength")) {
707        propertyAmbientShadowStrength = atoi(value);
708        ALOGD("ambient shadow strength = 0x%x out of 0xff", propertyAmbientShadowStrength);
709        return;
710    } else if (!strcmp(name, "spotShadowStrength")) {
711        propertySpotShadowStrength = atoi(value);
712        ALOGD("spot shadow strength = 0x%x out of 0xff", propertySpotShadowStrength);
713        return;
714    } else if (!strcmp(name, "ambientRatio")) {
715        propertyAmbientRatio = fmin(fmax(atof(value), 0.0), 10.0);
716        ALOGD("ambientRatio = %.2f", propertyAmbientRatio);
717        return;
718    } else if (!strcmp(name, "lightDiameter")) {
719        propertyLightDiameter = fmin(fmax(atof(value), 0.0), 3000.0);
720        ALOGD("lightDiameter = %.2f", propertyLightDiameter);
721        return;
722    }  else if (!strcmp(name, "lightPosY")) {
723        propertyLightPosY = fmin(fmax(atof(value), 0.0), 3000.0);
724        ALOGD("lightPos Y = %.2f", propertyLightPosY);
725        return;
726    }  else if (!strcmp(name, "lightPosZ")) {
727        propertyLightPosZ = fmin(fmax(atof(value), 0.0), 3000.0);
728        ALOGD("lightPos Z = %.2f", propertyLightPosZ);
729        return;
730    }
731    ALOGD("    failed");
732}
733
734}; // namespace uirenderer
735}; // namespace android
736