android_view_GLES20Canvas.cpp revision a4e16c58c9e3c983251e0475125a2a6f5bec2dbf 
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 <EGL/egl.h>
20
21#include "jni.h"
22#include "GraphicsJNI.h"
23#include <nativehelper/JNIHelp.h>
24
25#include <android_runtime/AndroidRuntime.h>
26#include <android_runtime/android_graphics_SurfaceTexture.h>
27#include <gui/GLConsumer.h>
28
29#include <androidfw/ResourceTypes.h>
30
31#include <private/hwui/DrawGlInfo.h>
32
33#include <cutils/properties.h>
34
35#include <SkBitmap.h>
36#include <SkCanvas.h>
37#include <SkMatrix.h>
38#include <SkPaint.h>
39#include <SkRegion.h>
40#include <SkScalerContext.h>
41#include <SkTemplates.h>
42#include <SkXfermode.h>
43
44#include <DisplayList.h>
45#include <DisplayListRenderer.h>
46#include <LayerRenderer.h>
47#include <OpenGLRenderer.h>
48#include <SkiaShader.h>
49#include <SkiaColorFilter.h>
50#include <Stencil.h>
51#include <Rect.h>
52
53#include <TextLayout.h>
54#include <TextLayoutCache.h>
55
56namespace android {
57
58using namespace uirenderer;
59
60/**
61 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
62 *       devices. This means all the logic must be compiled only when the
63 *       preprocessor variable USE_OPENGL_RENDERER is defined.
64 */
65#ifdef USE_OPENGL_RENDERER
66
67// ----------------------------------------------------------------------------
68// Defines
69// ----------------------------------------------------------------------------
70
71// Debug
72#define DEBUG_RENDERER 0
73
74// Debug
75#if DEBUG_RENDERER
76    #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
77#else
78    #define RENDERER_LOGD(...)
79#endif
80
81#define MODIFIER_SHADOW 1
82#define MODIFIER_SHADER 2
83#define MODIFIER_COLOR_FILTER 4
84
85// ----------------------------------------------------------------------------
86
87static struct {
88    jmethodID set;
89} gRectClassInfo;
90
91// ----------------------------------------------------------------------------
92// Caching
93// ----------------------------------------------------------------------------
94
95static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
96        Caches::FlushMode mode) {
97    if (Caches::hasInstance()) {
98        Caches::getInstance().flush(mode);
99    }
100}
101
102static void android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
103    if (Caches::hasInstance()) {
104        Caches::getInstance().init();
105    }
106}
107
108static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
109    if (Caches::hasInstance()) {
110        Caches::getInstance().terminate();
111    }
112}
113
114// ----------------------------------------------------------------------------
115// Constructors
116// ----------------------------------------------------------------------------
117
118static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
119    RENDERER_LOGD("Create OpenGLRenderer");
120    OpenGLRenderer* renderer = new OpenGLRenderer();
121    renderer->initProperties();
122    return renderer;
123}
124
125static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
126        OpenGLRenderer* renderer) {
127    RENDERER_LOGD("Destroy OpenGLRenderer");
128    delete renderer;
129}
130
131// ----------------------------------------------------------------------------
132// Setup
133// ----------------------------------------------------------------------------
134
135static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
136        OpenGLRenderer* renderer, jint width, jint height) {
137    renderer->setViewport(width, height);
138}
139
140static int android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
141        OpenGLRenderer* renderer, jboolean opaque) {
142    return renderer->prepare(opaque);
143}
144
145static int android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
146        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
147        jboolean opaque) {
148    return renderer->prepareDirty(left, top, right, bottom, opaque);
149}
150
151static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
152        OpenGLRenderer* renderer) {
153    renderer->finish();
154}
155
156static jint android_view_GLES20Canvas_getStencilSize(JNIEnv* env, jobject clazz) {
157    return Stencil::getStencilSize();
158}
159
160static void android_view_GLES20Canvas_setName(JNIEnv* env,
161        jobject clazz, OpenGLRenderer* renderer, jstring name) {
162    if (name != NULL) {
163        const char* textArray = env->GetStringUTFChars(name, NULL);
164        renderer->setName(textArray);
165        env->ReleaseStringUTFChars(name, textArray);
166    } else {
167        renderer->setName(NULL);
168    }
169}
170
171// ----------------------------------------------------------------------------
172// Functor
173// ----------------------------------------------------------------------------
174
175static jint android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
176        OpenGLRenderer* renderer, Functor* functor) {
177    android::uirenderer::Rect dirty;
178    return renderer->callDrawGLFunction(functor, dirty);
179}
180
181static void android_view_GLES20Canvas_detachFunctor(JNIEnv* env,
182        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
183    renderer->detachFunctor(functor);
184}
185
186static void android_view_GLES20Canvas_attachFunctor(JNIEnv* env,
187        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
188    renderer->attachFunctor(functor);
189}
190
191static jint android_view_GLES20Canvas_invokeFunctors(JNIEnv* env,
192        jobject clazz, OpenGLRenderer* renderer, jobject dirty) {
193    android::uirenderer::Rect bounds;
194    status_t status = renderer->invokeFunctors(bounds);
195    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
196        env->CallVoidMethod(dirty, gRectClassInfo.set,
197                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
198    }
199    return status;
200}
201
202// ----------------------------------------------------------------------------
203// Misc
204// ----------------------------------------------------------------------------
205
206static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
207    return Caches::getInstance().maxTextureSize;
208}
209
210static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
211    return Caches::getInstance().maxTextureSize;
212}
213
214// ----------------------------------------------------------------------------
215// State
216// ----------------------------------------------------------------------------
217
218static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
219        jint flags) {
220    return renderer->save(flags);
221}
222
223static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
224        OpenGLRenderer* renderer) {
225    return renderer->getSaveCount();
226}
227
228static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
229        OpenGLRenderer* renderer) {
230    renderer->restore();
231}
232
233static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
234        OpenGLRenderer* renderer, jint saveCount) {
235    renderer->restoreToCount(saveCount);
236}
237
238// ----------------------------------------------------------------------------
239// Layers
240// ----------------------------------------------------------------------------
241
242static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
243        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
244        SkPaint* paint, jint saveFlags) {
245    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
246}
247
248static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
249        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
250    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
251    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
252            paint, saveFlags);
253}
254
255static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
256        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
257        jint alpha, jint saveFlags) {
258    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
259}
260
261static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
262        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
263    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
264    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
265            alpha, saveFlags);
266}
267
268// ----------------------------------------------------------------------------
269// Clipping
270// ----------------------------------------------------------------------------
271
272static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
273        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom) {
274    return renderer->quickReject(left, top, right, bottom);
275}
276
277static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
278        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
279        SkRegion::Op op) {
280    return renderer->clipRect(left, top, right, bottom, op);
281}
282
283static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
284        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
285        SkRegion::Op op) {
286    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
287}
288
289static bool android_view_GLES20Canvas_clipPath(JNIEnv* env, jobject clazz,
290        OpenGLRenderer* renderer, SkPath* path, SkRegion::Op op) {
291    return renderer->clipPath(path, op);
292}
293
294static bool android_view_GLES20Canvas_clipRegion(JNIEnv* env, jobject clazz,
295        OpenGLRenderer* renderer, SkRegion* region, SkRegion::Op op) {
296    return renderer->clipRegion(region, op);
297}
298
299static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
300        OpenGLRenderer* renderer, jobject rect) {
301    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
302
303    env->CallVoidMethod(rect, gRectClassInfo.set,
304            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
305
306    return !bounds.isEmpty();
307}
308
309// ----------------------------------------------------------------------------
310// Transforms
311// ----------------------------------------------------------------------------
312
313static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
314        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
315    renderer->translate(dx, dy);
316}
317
318static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
319        OpenGLRenderer* renderer, jfloat degrees) {
320    renderer->rotate(degrees);
321}
322
323static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
324        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
325    renderer->scale(sx, sy);
326}
327
328static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
329        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
330    renderer->skew(sx, sy);
331}
332
333static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
334        OpenGLRenderer* renderer, SkMatrix* matrix) {
335    renderer->setMatrix(matrix);
336}
337
338static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
339        OpenGLRenderer* renderer, SkMatrix* matrix) {
340    renderer->getMatrix(matrix);
341}
342
343static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
344        OpenGLRenderer* renderer, SkMatrix* matrix) {
345    renderer->concatMatrix(matrix);
346}
347
348// ----------------------------------------------------------------------------
349// Drawing
350// ----------------------------------------------------------------------------
351
352static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
353        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
354        jfloat left, jfloat top, SkPaint* paint) {
355    // This object allows the renderer to allocate a global JNI ref to the buffer object.
356    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
357
358    renderer->drawBitmap(bitmap, left, top, paint);
359}
360
361static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
362        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
363        float srcLeft, float srcTop, float srcRight, float srcBottom,
364        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
365    // This object allows the renderer to allocate a global JNI ref to the buffer object.
366    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
367
368    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
369            dstLeft, dstTop, dstRight, dstBottom, paint);
370}
371
372static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
373        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
374        SkPaint* paint) {
375    // This object allows the renderer to allocate a global JNI ref to the buffer object.
376    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
377
378    renderer->drawBitmap(bitmap, matrix, paint);
379}
380
381static void android_view_GLES20Canvas_drawBitmapData(JNIEnv* env, jobject clazz,
382        OpenGLRenderer* renderer, jintArray colors, jint offset, jint stride,
383        jfloat left, jfloat top, jint width, jint height, jboolean hasAlpha, SkPaint* paint) {
384    SkBitmap* bitmap = new SkBitmap;
385    bitmap->setConfig(hasAlpha ? SkBitmap::kARGB_8888_Config : SkBitmap::kRGB_565_Config,
386            width, height);
387
388    if (!bitmap->allocPixels()) {
389        delete bitmap;
390        return;
391    }
392
393    if (!GraphicsJNI::SetPixels(env, colors, offset, stride, 0, 0, width, height, *bitmap)) {
394        delete bitmap;
395        return;
396    }
397
398    renderer->drawBitmapData(bitmap, left, top, paint);
399
400    // If the renderer is a deferred renderer it will own the bitmap
401    if (!renderer->isDeferred()) {
402        delete bitmap;
403    }
404}
405
406static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
407        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
408        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
409        jintArray colors, jint colorOffset, SkPaint* paint) {
410    // This object allows the renderer to allocate a global JNI ref to the buffer object.
411    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
412
413    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
414    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
415
416    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
417
418    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
419    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
420}
421
422static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
423        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
424        float left, float top, float right, float bottom, SkPaint* paint) {
425    // This object allows the renderer to allocate a global JNI ref to the buffer object.
426    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
427
428    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
429    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
430    Res_png_9patch::deserialize(patch);
431
432    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
433            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
434            left, top, right, bottom, paint);
435
436    env->ReleaseByteArrayElements(chunks, storage, 0);
437}
438
439static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
440        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
441    renderer->drawColor(color, mode);
442}
443
444static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
445        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
446        SkPaint* paint) {
447    renderer->drawRect(left, top, right, bottom, paint);
448}
449
450static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
451        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
452        jfloat rx, jfloat ry, SkPaint* paint) {
453    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
454}
455
456static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
457        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
458    renderer->drawCircle(x, y, radius, paint);
459}
460
461static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
462        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
463        SkPaint* paint) {
464    renderer->drawOval(left, top, right, bottom, paint);
465}
466
467static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
468        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
469        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
470    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
471}
472
473static void android_view_GLES20Canvas_drawRegionAsRects(JNIEnv* env, jobject clazz,
474        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
475    if (paint->getStyle() != SkPaint::kFill_Style ||
476            (paint->isAntiAlias() && !renderer->isCurrentTransformSimple())) {
477        SkRegion::Iterator it(*region);
478        while (!it.done()) {
479            const SkIRect& r = it.rect();
480            renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
481            it.next();
482        }
483    } else {
484        int count = 0;
485        Vector<float> rects;
486        SkRegion::Iterator it(*region);
487        while (!it.done()) {
488            const SkIRect& r = it.rect();
489            rects.push(r.fLeft);
490            rects.push(r.fTop);
491            rects.push(r.fRight);
492            rects.push(r.fBottom);
493            count += 4;
494            it.next();
495        }
496        renderer->drawRects(rects.array(), count, paint);
497    }
498}
499
500static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
501        OpenGLRenderer* renderer, jfloatArray rects, jint count, SkPaint* paint) {
502    jfloat* storage = env->GetFloatArrayElements(rects, NULL);
503    renderer->drawRects(storage, count, paint);
504    env->ReleaseFloatArrayElements(rects, storage, 0);
505}
506
507static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
508        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
509    jfloat* storage = env->GetFloatArrayElements(points, NULL);
510    renderer->drawPoints(storage + offset, count, paint);
511    env->ReleaseFloatArrayElements(points, storage, 0);
512}
513
514static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
515        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
516    renderer->drawPath(path, paint);
517}
518
519static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
520        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
521    jfloat* storage = env->GetFloatArrayElements(points, NULL);
522    renderer->drawLines(storage + offset, count, paint);
523    env->ReleaseFloatArrayElements(points, storage, 0);
524}
525
526// ----------------------------------------------------------------------------
527// Shaders and color filters
528// ----------------------------------------------------------------------------
529
530static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
531        OpenGLRenderer* renderer, jint modifiers) {
532    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
533    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
534    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
535}
536
537static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
538        OpenGLRenderer* renderer, SkiaShader* shader) {
539    renderer->setupShader(shader);
540}
541
542static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
543        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
544    renderer->setupColorFilter(filter);
545}
546
547static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
548        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
549    renderer->setupShadow(radius, dx, dy, color);
550}
551
552// ----------------------------------------------------------------------------
553// Draw filters
554// ----------------------------------------------------------------------------
555
556static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
557        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
558    renderer->setupPaintFilter(clearBits, setBits);
559}
560
561static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
562        OpenGLRenderer* renderer) {
563    renderer->resetPaintFilter();
564}
565
566// ----------------------------------------------------------------------------
567// Text
568// ----------------------------------------------------------------------------
569
570static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
571        jfloat x, jfloat y, int flags, SkPaint* paint) {
572    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
573            text, 0, count, count, flags);
574    if (value == NULL) {
575        return;
576    }
577    const jchar* glyphs = value->getGlyphs();
578    size_t glyphsCount = value->getGlyphsCount();
579    jfloat totalAdvance = value->getTotalAdvance();
580    const float* positions = value->getPos();
581    int bytesCount = glyphsCount * sizeof(jchar);
582    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y,
583            positions, paint, totalAdvance);
584}
585
586static void renderTextOnPath(OpenGLRenderer* renderer, const jchar* text, int count,
587        SkPath* path, jfloat hOffset, jfloat vOffset, int flags, SkPaint* paint) {
588    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
589            text, 0, count, count, flags);
590    if (value == NULL) {
591        return;
592    }
593    const jchar* glyphs = value->getGlyphs();
594    size_t glyphsCount = value->getGlyphsCount();
595    int bytesCount = glyphsCount * sizeof(jchar);
596    renderer->drawTextOnPath((const char*) glyphs, bytesCount, glyphsCount, path,
597            hOffset, vOffset, paint);
598}
599
600static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
601        jint start, jint count, jint contextCount, jfloat x, jfloat y,
602        int flags, SkPaint* paint) {
603    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
604            text, start, count, contextCount, flags);
605    if (value == NULL) {
606        return;
607    }
608    const jchar* glyphs = value->getGlyphs();
609    size_t glyphsCount = value->getGlyphsCount();
610    jfloat totalAdvance = value->getTotalAdvance();
611    const float* positions = value->getPos();
612    int bytesCount = glyphsCount * sizeof(jchar);
613    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y,
614            positions, paint, totalAdvance);
615}
616
617static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
618        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
619        jfloat x, jfloat y, jint flags, SkPaint* paint) {
620    jchar* textArray = env->GetCharArrayElements(text, NULL);
621    renderText(renderer, textArray + index, count, x, y, flags, paint);
622    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
623}
624
625static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
626        OpenGLRenderer* renderer, jstring text, jint start, jint end,
627        jfloat x, jfloat y, jint flags, SkPaint* paint) {
628    const jchar* textArray = env->GetStringChars(text, NULL);
629    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
630    env->ReleaseStringChars(text, textArray);
631}
632
633static void android_view_GLES20Canvas_drawTextArrayOnPath(JNIEnv* env, jobject clazz,
634        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
635        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
636    jchar* textArray = env->GetCharArrayElements(text, NULL);
637    renderTextOnPath(renderer, textArray + index, count, path,
638            hOffset, vOffset, flags, paint);
639    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
640}
641
642static void android_view_GLES20Canvas_drawTextOnPath(JNIEnv* env, jobject clazz,
643        OpenGLRenderer* renderer, jstring text, jint start, jint end,
644        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
645    const jchar* textArray = env->GetStringChars(text, NULL);
646    renderTextOnPath(renderer, textArray + start, end - start, path,
647            hOffset, vOffset, flags, paint);
648    env->ReleaseStringChars(text, textArray);
649}
650
651static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
652        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
653        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
654        SkPaint* paint) {
655    jchar* textArray = env->GetCharArrayElements(text, NULL);
656    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
657            count, contextCount, x, y, dirFlags, paint);
658    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
659 }
660
661static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
662        OpenGLRenderer* renderer, jstring text, jint start, jint end,
663        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
664        SkPaint* paint) {
665    const jchar* textArray = env->GetStringChars(text, NULL);
666    jint count = end - start;
667    jint contextCount = contextEnd - contextStart;
668    renderTextRun(renderer, textArray + contextStart, start - contextStart,
669            count, contextCount, x, y, dirFlags, paint);
670    env->ReleaseStringChars(text, textArray);
671}
672
673static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
674        const jfloat* positions, jint dirFlags, SkPaint* paint) {
675    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
676            text, 0, count, count, dirFlags);
677    if (value == NULL) {
678        return;
679    }
680    const jchar* glyphs = value->getGlyphs();
681    size_t glyphsCount = value->getGlyphsCount();
682    if (count < int(glyphsCount)) glyphsCount = count;
683    int bytesCount = glyphsCount * sizeof(jchar);
684
685    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
686}
687
688static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
689        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
690        jfloatArray pos, SkPaint* paint) {
691    jchar* textArray = env->GetCharArrayElements(text, NULL);
692    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
693
694    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
695
696    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
697    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
698}
699
700static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
701        OpenGLRenderer* renderer, jstring text, jint start, jint end,
702        jfloatArray pos, SkPaint* paint) {
703    const jchar* textArray = env->GetStringChars(text, NULL);
704    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
705
706    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
707
708    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
709    env->ReleaseStringChars(text, textArray);
710}
711
712// ----------------------------------------------------------------------------
713// Display lists
714// ----------------------------------------------------------------------------
715
716static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
717        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
718    return renderer->getDisplayList(displayList);
719}
720
721static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
722        jobject clazz) {
723    return new DisplayListRenderer;
724}
725
726static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
727        jobject clazz, DisplayListRenderer* renderer) {
728    renderer->reset();
729}
730
731static jint android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
732        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
733        jobject dirty, jint flags) {
734    android::uirenderer::Rect bounds;
735    status_t status = renderer->drawDisplayList(displayList, bounds, flags);
736    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
737        env->CallVoidMethod(dirty, gRectClassInfo.set,
738                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
739    }
740    return status;
741}
742
743static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
744        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
745    renderer->outputDisplayList(displayList);
746}
747
748// ----------------------------------------------------------------------------
749// Layers
750// ----------------------------------------------------------------------------
751
752static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
753        OpenGLRenderer* renderer) {
754    renderer->interrupt();
755}
756
757static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
758        OpenGLRenderer* renderer) {
759    renderer->resume();
760}
761
762static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
763        jobject clazz, Layer* layer) {
764    if (layer) {
765        OpenGLRenderer* renderer = new LayerRenderer(layer);
766        renderer->initProperties();
767        return renderer;
768    }
769    return NULL;
770}
771
772static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
773        jboolean isOpaque, jintArray layerInfo) {
774    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
775
776    if (layer) {
777        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
778        storage[0] = layer->getTexture();
779        env->ReleaseIntArrayElements(layerInfo, storage, 0);
780    }
781
782    return layer;
783}
784
785static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
786        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
787    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
788
789    if (layer) {
790        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
791        storage[0] = layer->getWidth();
792        storage[1] = layer->getHeight();
793        env->ReleaseIntArrayElements(layerInfo, storage, 0);
794    }
795
796    return layer;
797}
798
799static bool android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
800        Layer* layer, jint width, jint height, jintArray layerInfo) {
801    if (LayerRenderer::resizeLayer(layer, width, height)) {
802        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
803        storage[0] = layer->getWidth();
804        storage[1] = layer->getHeight();
805        env->ReleaseIntArrayElements(layerInfo, storage, 0);
806        return true;
807    }
808    return false;
809}
810
811static void android_view_GLES20Canvas_setLayerPaint(JNIEnv* env, jobject clazz,
812        Layer* layer, SkPaint* paint) {
813    if (layer) {
814        layer->setPaint(paint);
815    }
816}
817
818static void android_view_GLES20Canvas_setLayerColorFilter(JNIEnv* env, jobject clazz,
819        Layer* layer, SkiaColorFilter* colorFilter) {
820    if (layer) {
821        layer->setColorFilter(colorFilter);
822    }
823}
824
825static void android_view_GLES20Canvas_setOpaqueLayer(JNIEnv* env, jobject clazz,
826        Layer* layer, jboolean isOpaque) {
827    if (layer) {
828        layer->setBlend(!isOpaque);
829    }
830}
831
832static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
833        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
834    float transform[16];
835    sp<GLConsumer> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
836
837    if (surfaceTexture->updateTexImage() == NO_ERROR) {
838        surfaceTexture->getTransformMatrix(transform);
839        GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
840
841        LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
842    }
843}
844
845static void android_view_GLES20Canvas_updateRenderLayer(JNIEnv* env, jobject clazz,
846        Layer* layer, OpenGLRenderer* renderer, DisplayList* displayList,
847        jint left, jint top, jint right, jint bottom) {
848    layer->updateDeferred(renderer, displayList, left, top, right, bottom);
849}
850
851static void android_view_GLES20Canvas_clearLayerTexture(JNIEnv* env, jobject clazz,
852        Layer* layer) {
853    layer->clearTexture();
854}
855
856static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
857        Layer* layer, SkMatrix* matrix) {
858    layer->getTransform().load(*matrix);
859}
860
861static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
862    LayerRenderer::destroyLayer(layer);
863}
864
865static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
866        jobject clazz, Layer* layer) {
867    LayerRenderer::destroyLayerDeferred(layer);
868}
869
870static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
871        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y) {
872    renderer->drawLayer(layer, x, y);
873}
874
875static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
876        Layer* layer, SkBitmap* bitmap) {
877    return LayerRenderer::copyLayer(layer, bitmap);
878}
879
880static void android_view_GLES20Canvas_pushLayerUpdate(JNIEnv* env, jobject clazz,
881        OpenGLRenderer* renderer, Layer* layer) {
882    renderer->pushLayerUpdate(layer);
883}
884
885static void android_view_GLES20Canvas_clearLayerUpdates(JNIEnv* env, jobject clazz,
886        OpenGLRenderer* renderer) {
887    renderer->clearLayerUpdates();
888}
889
890#endif // USE_OPENGL_RENDERER
891
892// ----------------------------------------------------------------------------
893// Common
894// ----------------------------------------------------------------------------
895
896static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
897#ifdef USE_OPENGL_RENDERER
898    char prop[PROPERTY_VALUE_MAX];
899    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
900        // not in the emulator
901        return JNI_TRUE;
902    }
903    // In the emulator this property will be set to 1 when hardware GLES is
904    // enabled, 0 otherwise. On old emulator versions it will be undefined.
905    property_get("ro.kernel.qemu.gles", prop, "0");
906    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
907#else
908    return JNI_FALSE;
909#endif
910}
911
912// ----------------------------------------------------------------------------
913// Logging
914// ----------------------------------------------------------------------------
915
916static void
917android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
918#ifdef USE_OPENGL_RENDERER
919    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
920    android::uirenderer::DisplayList::outputLogBuffer(fd);
921#endif // USE_OPENGL_RENDERER
922}
923
924// ----------------------------------------------------------------------------
925// JNI Glue
926// ----------------------------------------------------------------------------
927
928const char* const kClassPathName = "android/view/GLES20Canvas";
929
930static JNINativeMethod gMethods[] = {
931    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
932
933#ifdef USE_OPENGL_RENDERER
934    { "nFlushCaches",       "(I)V",            (void*) android_view_GLES20Canvas_flushCaches },
935    { "nInitCaches",        "()V",             (void*) android_view_GLES20Canvas_initCaches },
936    { "nTerminateCaches",   "()V",             (void*) android_view_GLES20Canvas_terminateCaches },
937
938    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
939    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
940    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
941    { "nPrepare",           "(IZ)I",           (void*) android_view_GLES20Canvas_prepare },
942    { "nPrepareDirty",      "(IIIIIZ)I",       (void*) android_view_GLES20Canvas_prepareDirty },
943    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
944    { "nSetName",           "(ILjava/lang/String;)V",
945            (void*) android_view_GLES20Canvas_setName },
946
947    { "nGetStencilSize",    "()I",             (void*) android_view_GLES20Canvas_getStencilSize },
948
949    { "nCallDrawGLFunction", "(II)I",          (void*) android_view_GLES20Canvas_callDrawGLFunction },
950    { "nDetachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_detachFunctor },
951    { "nAttachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_attachFunctor },
952    { "nInvokeFunctors",     "(ILandroid/graphics/Rect;)I",
953            (void*) android_view_GLES20Canvas_invokeFunctors },
954
955    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
956    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
957    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
958    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
959
960    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
961    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
962    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
963    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
964
965    { "nQuickReject",       "(IFFFF)Z",        (void*) android_view_GLES20Canvas_quickReject },
966    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
967    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
968    { "nClipPath",          "(III)Z",          (void*) android_view_GLES20Canvas_clipPath },
969    { "nClipRegion",        "(III)Z",          (void*) android_view_GLES20Canvas_clipRegion },
970
971    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
972    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
973    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
974    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
975
976    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
977    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
978    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
979
980    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
981    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
982    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
983    { "nDrawBitmap",        "(I[IIIFFIIZI)V",  (void*) android_view_GLES20Canvas_drawBitmapData },
984
985    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
986
987    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
988
989    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
990    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
991    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRegionAsRects },
992    { "nDrawRects",         "(I[FII)V",        (void*) android_view_GLES20Canvas_drawRects },
993    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
994    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
995    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
996    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
997    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
998
999    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
1000    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
1001
1002    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
1003    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
1004    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
1005    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
1006
1007    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
1008    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
1009
1010    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
1011    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
1012            (void*) android_view_GLES20Canvas_drawText },
1013
1014    { "nDrawTextOnPath",    "(I[CIIIFFII)V",   (void*) android_view_GLES20Canvas_drawTextArrayOnPath },
1015    { "nDrawTextOnPath",    "(ILjava/lang/String;IIIFFII)V",
1016            (void*) android_view_GLES20Canvas_drawTextOnPath },
1017
1018    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
1019    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
1020            (void*) android_view_GLES20Canvas_drawTextRun },
1021
1022    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
1023    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
1024            (void*) android_view_GLES20Canvas_drawPosText },
1025
1026    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
1027            (void*) android_view_GLES20Canvas_getClipBounds },
1028
1029    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
1030    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
1031    { "nDrawDisplayList",        "(IILandroid/graphics/Rect;I)I",
1032            (void*) android_view_GLES20Canvas_drawDisplayList },
1033
1034    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
1035    { "nResetDisplayListRenderer",  "(I)V",    (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
1036
1037    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
1038    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
1039
1040    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
1041    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
1042    { "nResizeLayer",            "(III[I)Z" ,  (void*) android_view_GLES20Canvas_resizeLayer },
1043    { "nSetLayerPaint",          "(II)V",      (void*) android_view_GLES20Canvas_setLayerPaint },
1044    { "nSetLayerColorFilter",    "(II)V",      (void*) android_view_GLES20Canvas_setLayerColorFilter },
1045    { "nSetOpaqueLayer",         "(IZ)V",      (void*) android_view_GLES20Canvas_setOpaqueLayer },
1046    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
1047    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
1048            (void*) android_view_GLES20Canvas_updateTextureLayer },
1049    { "nUpdateRenderLayer",      "(IIIIIII)V", (void*) android_view_GLES20Canvas_updateRenderLayer },
1050    { "nClearLayerTexture",      "(I)V",       (void*) android_view_GLES20Canvas_clearLayerTexture },
1051    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
1052    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
1053    { "nDrawLayer",              "(IIFF)V",    (void*) android_view_GLES20Canvas_drawLayer },
1054    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
1055    { "nClearLayerUpdates",      "(I)V",       (void*) android_view_GLES20Canvas_clearLayerUpdates },
1056    { "nPushLayerUpdate",        "(II)V",      (void*) android_view_GLES20Canvas_pushLayerUpdate },
1057
1058    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
1059
1060    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
1061    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
1062
1063#endif
1064};
1065
1066static JNINativeMethod gActivityThreadMethods[] = {
1067    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
1068                                               (void*) android_app_ActivityThread_dumpGraphics }
1069};
1070
1071
1072#ifdef USE_OPENGL_RENDERER
1073    #define FIND_CLASS(var, className) \
1074            var = env->FindClass(className); \
1075            LOG_FATAL_IF(! var, "Unable to find class " className);
1076
1077    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
1078            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
1079            LOG_FATAL_IF(! var, "Unable to find method " methodName);
1080#else
1081    #define FIND_CLASS(var, className)
1082    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
1083#endif
1084
1085int register_android_view_GLES20Canvas(JNIEnv* env) {
1086    jclass clazz;
1087    FIND_CLASS(clazz, "android/graphics/Rect");
1088    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
1089
1090    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
1091}
1092
1093const char* const kActivityThreadPathName = "android/app/ActivityThread";
1094
1095int register_android_app_ActivityThread(JNIEnv* env) {
1096    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
1097            gActivityThreadMethods, NELEM(gActivityThreadMethods));
1098}
1099
1100};
1101