android_view_GLES20Canvas.cpp revision f0af1d5cb255f136d2fff773be7518ffd7ae3b93 
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/SurfaceTexture.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 <DisplayListRenderer.h>
45#include <LayerRenderer.h>
46#include <OpenGLRenderer.h>
47#include <SkiaShader.h>
48#include <SkiaColorFilter.h>
49#include <Rect.h>
50
51#include <TextLayout.h>
52#include <TextLayoutCache.h>
53
54namespace android {
55
56using namespace uirenderer;
57
58/**
59 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
60 *       devices. This means all the logic must be compiled only when the
61 *       preprocessor variable USE_OPENGL_RENDERER is defined.
62 */
63#ifdef USE_OPENGL_RENDERER
64
65// ----------------------------------------------------------------------------
66// Defines
67// ----------------------------------------------------------------------------
68
69// Debug
70#define DEBUG_RENDERER 0
71
72// Debug
73#if DEBUG_RENDERER
74    #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
75#else
76    #define RENDERER_LOGD(...)
77#endif
78
79#define MODIFIER_SHADOW 1
80#define MODIFIER_SHADER 2
81#define MODIFIER_COLOR_FILTER 4
82
83// ----------------------------------------------------------------------------
84
85static struct {
86    jmethodID set;
87} gRectClassInfo;
88
89// ----------------------------------------------------------------------------
90// Caching
91// ----------------------------------------------------------------------------
92
93static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
94        Caches::FlushMode mode) {
95    if (Caches::hasInstance()) {
96        Caches::getInstance().flush(mode);
97    }
98}
99
100static void android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
101    if (Caches::hasInstance()) {
102        Caches::getInstance().init();
103    }
104}
105
106static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
107    if (Caches::hasInstance()) {
108        Caches::getInstance().terminate();
109    }
110}
111
112// ----------------------------------------------------------------------------
113// Constructors
114// ----------------------------------------------------------------------------
115
116static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
117    RENDERER_LOGD("Create OpenGLRenderer");
118    return new OpenGLRenderer;
119}
120
121static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
122        OpenGLRenderer* renderer) {
123    RENDERER_LOGD("Destroy OpenGLRenderer");
124    delete renderer;
125}
126
127// ----------------------------------------------------------------------------
128// Setup
129// ----------------------------------------------------------------------------
130
131static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
132        OpenGLRenderer* renderer, jint width, jint height) {
133    renderer->setViewport(width, height);
134}
135
136static int android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
137        OpenGLRenderer* renderer, jboolean opaque) {
138    return renderer->prepare(opaque);
139}
140
141static int android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
142        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
143        jboolean opaque) {
144    return renderer->prepareDirty(left, top, right, bottom, opaque);
145}
146
147static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
148        OpenGLRenderer* renderer) {
149    renderer->finish();
150}
151
152static jint android_view_GLES20Canvas_getStencilSize(JNIEnv* env, jobject clazz) {
153    return OpenGLRenderer::getStencilSize();
154}
155
156// ----------------------------------------------------------------------------
157// Functor
158// ----------------------------------------------------------------------------
159
160static jint android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
161        OpenGLRenderer* renderer, Functor* functor) {
162    android::uirenderer::Rect dirty;
163    return renderer->callDrawGLFunction(functor, dirty);
164}
165
166static void android_view_GLES20Canvas_detachFunctor(JNIEnv* env,
167        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
168    renderer->detachFunctor(functor);
169}
170
171static void android_view_GLES20Canvas_attachFunctor(JNIEnv* env,
172        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
173    renderer->attachFunctor(functor);
174}
175
176static jint android_view_GLES20Canvas_invokeFunctors(JNIEnv* env,
177        jobject clazz, OpenGLRenderer* renderer, jobject dirty) {
178    android::uirenderer::Rect bounds;
179    status_t status = renderer->invokeFunctors(bounds);
180    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
181        env->CallVoidMethod(dirty, gRectClassInfo.set,
182                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
183    }
184    return status;
185}
186
187// ----------------------------------------------------------------------------
188// Misc
189// ----------------------------------------------------------------------------
190
191static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
192    return Caches::getInstance().maxTextureSize;
193}
194
195static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
196    return Caches::getInstance().maxTextureSize;
197}
198
199// ----------------------------------------------------------------------------
200// State
201// ----------------------------------------------------------------------------
202
203static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
204        jint flags) {
205    return renderer->save(flags);
206}
207
208static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
209        OpenGLRenderer* renderer) {
210    return renderer->getSaveCount();
211}
212
213static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
214        OpenGLRenderer* renderer) {
215    renderer->restore();
216}
217
218static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
219        OpenGLRenderer* renderer, jint saveCount) {
220    renderer->restoreToCount(saveCount);
221}
222
223// ----------------------------------------------------------------------------
224// Layers
225// ----------------------------------------------------------------------------
226
227static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
228        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
229        SkPaint* paint, jint saveFlags) {
230    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
231}
232
233static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
234        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
235    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
236    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
237            paint, saveFlags);
238}
239
240static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
241        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
242        jint alpha, jint saveFlags) {
243    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
244}
245
246static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
247        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
248    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
249    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
250            alpha, saveFlags);
251}
252
253// ----------------------------------------------------------------------------
254// Clipping
255// ----------------------------------------------------------------------------
256
257static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
258        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
259        SkCanvas::EdgeType edge) {
260    return renderer->quickReject(left, top, right, bottom);
261}
262
263static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
264        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
265        SkRegion::Op op) {
266    return renderer->clipRect(left, top, right, bottom, op);
267}
268
269static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
270        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
271        SkRegion::Op op) {
272    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
273}
274
275static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
276        OpenGLRenderer* renderer, jobject rect) {
277    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
278
279    env->CallVoidMethod(rect, gRectClassInfo.set,
280            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
281
282    return !bounds.isEmpty();
283}
284
285// ----------------------------------------------------------------------------
286// Transforms
287// ----------------------------------------------------------------------------
288
289static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
290        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
291    renderer->translate(dx, dy);
292}
293
294static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
295        OpenGLRenderer* renderer, jfloat degrees) {
296    renderer->rotate(degrees);
297}
298
299static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
300        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
301    renderer->scale(sx, sy);
302}
303
304static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
305        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
306    renderer->skew(sx, sy);
307}
308
309static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
310        OpenGLRenderer* renderer, SkMatrix* matrix) {
311    renderer->setMatrix(matrix);
312}
313
314static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
315        OpenGLRenderer* renderer, SkMatrix* matrix) {
316    renderer->getMatrix(matrix);
317}
318
319static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
320        OpenGLRenderer* renderer, SkMatrix* matrix) {
321    renderer->concatMatrix(matrix);
322}
323
324// ----------------------------------------------------------------------------
325// Drawing
326// ----------------------------------------------------------------------------
327
328static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
329        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
330        jfloat left, jfloat top, SkPaint* paint) {
331    // This object allows the renderer to allocate a global JNI ref to the buffer object.
332    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
333
334    renderer->drawBitmap(bitmap, left, top, paint);
335}
336
337static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
338        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
339        float srcLeft, float srcTop, float srcRight, float srcBottom,
340        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
341    // This object allows the renderer to allocate a global JNI ref to the buffer object.
342    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
343
344    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
345            dstLeft, dstTop, dstRight, dstBottom, paint);
346}
347
348static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
349        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
350        SkPaint* paint) {
351    // This object allows the renderer to allocate a global JNI ref to the buffer object.
352    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
353
354    renderer->drawBitmap(bitmap, matrix, paint);
355}
356
357static void android_view_GLES20Canvas_drawBitmapData(JNIEnv* env, jobject clazz,
358        OpenGLRenderer* renderer, jintArray colors, jint offset, jint stride,
359        jfloat left, jfloat top, jint width, jint height, jboolean hasAlpha, SkPaint* paint) {
360    SkBitmap* bitmap = new SkBitmap;
361    bitmap->setConfig(hasAlpha ? SkBitmap::kARGB_8888_Config : SkBitmap::kRGB_565_Config,
362            width, height);
363
364    if (!bitmap->allocPixels()) {
365        delete bitmap;
366        return;
367    }
368
369    if (!GraphicsJNI::SetPixels(env, colors, offset, stride, 0, 0, width, height, *bitmap)) {
370        delete bitmap;
371        return;
372    }
373
374    renderer->drawBitmapData(bitmap, left, top, paint);
375
376    // If the renderer is a deferred renderer it will own the bitmap
377    if (!renderer->isDeferred()) {
378        delete bitmap;
379    }
380}
381
382static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
383        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
384        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
385        jintArray colors, jint colorOffset, SkPaint* paint) {
386    // This object allows the renderer to allocate a global JNI ref to the buffer object.
387    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
388
389    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
390    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
391
392    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
393
394    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
395    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
396}
397
398static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
399        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
400        float left, float top, float right, float bottom, SkPaint* paint) {
401    // This object allows the renderer to allocate a global JNI ref to the buffer object.
402    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
403
404    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
405    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
406    Res_png_9patch::deserialize(patch);
407
408    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
409            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
410            left, top, right, bottom, paint);
411
412    env->ReleaseByteArrayElements(chunks, storage, 0);
413}
414
415static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
416        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
417    renderer->drawColor(color, mode);
418}
419
420static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
421        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
422        SkPaint* paint) {
423    renderer->drawRect(left, top, right, bottom, paint);
424}
425
426static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
427        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
428        jfloat rx, jfloat ry, SkPaint* paint) {
429    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
430}
431
432static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
433        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
434    renderer->drawCircle(x, y, radius, paint);
435}
436
437static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
438        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
439        SkPaint* paint) {
440    renderer->drawOval(left, top, right, bottom, paint);
441}
442
443static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
444        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
445        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
446    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
447}
448
449static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
450        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
451    SkRegion::Iterator it(*region);
452    while (!it.done()) {
453        const SkIRect& r = it.rect();
454        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
455        it.next();
456    }
457}
458
459static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
460        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
461    jfloat* storage = env->GetFloatArrayElements(points, NULL);
462    renderer->drawPoints(storage + offset, count, paint);
463    env->ReleaseFloatArrayElements(points, storage, 0);
464}
465
466static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
467        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
468    renderer->drawPath(path, paint);
469}
470
471static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
472        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
473    jfloat* storage = env->GetFloatArrayElements(points, NULL);
474    renderer->drawLines(storage + offset, count, paint);
475    env->ReleaseFloatArrayElements(points, storage, 0);
476}
477
478// ----------------------------------------------------------------------------
479// Shaders and color filters
480// ----------------------------------------------------------------------------
481
482static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
483        OpenGLRenderer* renderer, jint modifiers) {
484    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
485    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
486    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
487}
488
489static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
490        OpenGLRenderer* renderer, SkiaShader* shader) {
491    renderer->setupShader(shader);
492}
493
494static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
495        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
496    renderer->setupColorFilter(filter);
497}
498
499static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
500        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
501    renderer->setupShadow(radius, dx, dy, color);
502}
503
504// ----------------------------------------------------------------------------
505// Draw filters
506// ----------------------------------------------------------------------------
507
508static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
509        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
510    renderer->setupPaintFilter(clearBits, setBits);
511}
512
513static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
514        OpenGLRenderer* renderer) {
515    renderer->resetPaintFilter();
516}
517
518// ----------------------------------------------------------------------------
519// Text
520// ----------------------------------------------------------------------------
521
522static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
523        jfloat x, jfloat y, int flags, SkPaint* paint) {
524    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
525            text, 0, count, count, flags);
526    if (value == NULL) {
527        return;
528    }
529    const jchar* glyphs = value->getGlyphs();
530    size_t glyphsCount = value->getGlyphsCount();
531    int bytesCount = glyphsCount * sizeof(jchar);
532    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
533}
534
535static void renderTextOnPath(OpenGLRenderer* renderer, const jchar* text, int count,
536        SkPath* path, jfloat hOffset, jfloat vOffset, int flags, SkPaint* paint) {
537    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
538            text, 0, count, count, flags);
539    if (value == NULL) {
540        return;
541    }
542    const jchar* glyphs = value->getGlyphs();
543    size_t glyphsCount = value->getGlyphsCount();
544    int bytesCount = glyphsCount * sizeof(jchar);
545    renderer->drawTextOnPath((const char*) glyphs, bytesCount, glyphsCount, path,
546            hOffset, vOffset, paint);
547}
548
549static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
550        jint start, jint count, jint contextCount, jfloat x, jfloat y,
551        int flags, SkPaint* paint) {
552    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
553            text, start, count, contextCount, flags);
554    if (value == NULL) {
555        return;
556    }
557    const jchar* glyphs = value->getGlyphs();
558    size_t glyphsCount = value->getGlyphsCount();
559    int bytesCount = glyphsCount * sizeof(jchar);
560    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
561}
562
563static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
564        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
565        jfloat x, jfloat y, jint flags, SkPaint* paint) {
566    jchar* textArray = env->GetCharArrayElements(text, NULL);
567    renderText(renderer, textArray + index, count, x, y, flags, paint);
568    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
569}
570
571static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
572        OpenGLRenderer* renderer, jstring text, jint start, jint end,
573        jfloat x, jfloat y, jint flags, SkPaint* paint) {
574    const jchar* textArray = env->GetStringChars(text, NULL);
575    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
576    env->ReleaseStringChars(text, textArray);
577}
578
579static void android_view_GLES20Canvas_drawTextArrayOnPath(JNIEnv* env, jobject clazz,
580        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
581        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
582    jchar* textArray = env->GetCharArrayElements(text, NULL);
583    renderTextOnPath(renderer, textArray + index, count, path,
584            hOffset, vOffset, flags, paint);
585    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
586}
587
588static void android_view_GLES20Canvas_drawTextOnPath(JNIEnv* env, jobject clazz,
589        OpenGLRenderer* renderer, jstring text, jint start, jint end,
590        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
591    const jchar* textArray = env->GetStringChars(text, NULL);
592    renderTextOnPath(renderer, textArray + start, end - start, path,
593            hOffset, vOffset, flags, paint);
594    env->ReleaseStringChars(text, textArray);
595}
596
597static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
598        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
599        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
600        SkPaint* paint) {
601    jchar* textArray = env->GetCharArrayElements(text, NULL);
602    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
603            count, contextCount, x, y, dirFlags, paint);
604    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
605 }
606
607static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
608        OpenGLRenderer* renderer, jstring text, jint start, jint end,
609        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
610        SkPaint* paint) {
611    const jchar* textArray = env->GetStringChars(text, NULL);
612    jint count = end - start;
613    jint contextCount = contextEnd - contextStart;
614    renderTextRun(renderer, textArray + contextStart, start - contextStart,
615            count, contextCount, x, y, dirFlags, paint);
616    env->ReleaseStringChars(text, textArray);
617}
618
619static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
620        const jfloat* positions, jint dirFlags, SkPaint* paint) {
621    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
622            text, 0, count, count, dirFlags);
623    if (value == NULL) {
624        return;
625    }
626    const jchar* glyphs = value->getGlyphs();
627    size_t glyphsCount = value->getGlyphsCount();
628    if (count < int(glyphsCount)) glyphsCount = count;
629    int bytesCount = glyphsCount * sizeof(jchar);
630
631    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
632}
633
634static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
635        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
636        jfloatArray pos, SkPaint* paint) {
637    jchar* textArray = env->GetCharArrayElements(text, NULL);
638    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
639
640    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
641
642    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
643    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
644}
645
646static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
647        OpenGLRenderer* renderer, jstring text, jint start, jint end,
648        jfloatArray pos, SkPaint* paint) {
649    const jchar* textArray = env->GetStringChars(text, NULL);
650    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
651
652    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
653
654    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
655    env->ReleaseStringChars(text, textArray);
656}
657
658// ----------------------------------------------------------------------------
659// Display lists
660// ----------------------------------------------------------------------------
661
662static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
663        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
664    return renderer->getDisplayList(displayList);
665}
666
667static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
668        jobject clazz, DisplayList* displayList) {
669    return displayList->getSize();
670}
671
672static void android_view_GLES20Canvas_setDisplayListName(JNIEnv* env,
673        jobject clazz, DisplayList* displayList, jstring name) {
674    if (name != NULL) {
675        const char* textArray = env->GetStringUTFChars(name, NULL);
676        displayList->setName(textArray);
677        env->ReleaseStringUTFChars(name, textArray);
678    }
679}
680
681static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
682        jobject clazz) {
683    return new DisplayListRenderer;
684}
685
686static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
687        jobject clazz, DisplayListRenderer* renderer) {
688    renderer->reset();
689}
690
691static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
692        jobject clazz, DisplayList* displayList) {
693    DisplayList::destroyDisplayListDeferred(displayList);
694}
695
696static jint android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
697        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
698        jobject dirty, jint flags) {
699    android::uirenderer::Rect bounds;
700    status_t status = renderer->drawDisplayList(displayList, bounds, flags);
701    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
702        env->CallVoidMethod(dirty, gRectClassInfo.set,
703                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
704    }
705    return status;
706}
707
708static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
709        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
710    renderer->outputDisplayList(displayList);
711}
712
713// ----------------------------------------------------------------------------
714// Layers
715// ----------------------------------------------------------------------------
716
717static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
718        OpenGLRenderer* renderer) {
719    renderer->interrupt();
720}
721
722static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
723        OpenGLRenderer* renderer) {
724    renderer->resume();
725}
726
727static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
728        jobject clazz, Layer* layer) {
729    if (layer) {
730        return new LayerRenderer(layer);
731    }
732    return NULL;
733}
734
735static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
736        jboolean isOpaque, jintArray layerInfo) {
737    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
738
739    if (layer) {
740        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
741        storage[0] = layer->getTexture();
742        env->ReleaseIntArrayElements(layerInfo, storage, 0);
743    }
744
745    return layer;
746}
747
748static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
749        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
750    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
751
752    if (layer) {
753        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
754        storage[0] = layer->getWidth();
755        storage[1] = layer->getHeight();
756        env->ReleaseIntArrayElements(layerInfo, storage, 0);
757    }
758
759    return layer;
760}
761
762static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
763        Layer* layer, jint width, jint height, jintArray layerInfo) {
764    LayerRenderer::resizeLayer(layer, width, height);
765
766    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
767    storage[0] = layer->getWidth();
768    storage[1] = layer->getHeight();
769    env->ReleaseIntArrayElements(layerInfo, storage, 0);
770}
771
772static void android_view_GLES20Canvas_setOpaqueLayer(JNIEnv* env, jobject clazz,
773        Layer* layer, jboolean isOpaque) {
774    if (layer) {
775        layer->setBlend(!isOpaque);
776    }
777}
778
779static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
780        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
781    float transform[16];
782    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
783
784    if (surfaceTexture->updateTexImage() == NO_ERROR) {
785        surfaceTexture->getTransformMatrix(transform);
786        GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
787
788        LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
789    }
790}
791
792static void android_view_GLES20Canvas_updateRenderLayer(JNIEnv* env, jobject clazz,
793        Layer* layer, OpenGLRenderer* renderer, DisplayList* displayList,
794        jint left, jint top, jint right, jint bottom) {
795    layer->updateDeferred(renderer, displayList, left, top, right, bottom);
796}
797
798static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
799        Layer* layer, SkMatrix* matrix) {
800
801    layer->getTransform().load(*matrix);
802}
803
804static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
805    LayerRenderer::destroyLayer(layer);
806}
807
808static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
809        jobject clazz, Layer* layer) {
810    LayerRenderer::destroyLayerDeferred(layer);
811}
812
813static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
814        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
815    renderer->drawLayer(layer, x, y, paint);
816}
817
818static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
819        Layer* layer, SkBitmap* bitmap) {
820    return LayerRenderer::copyLayer(layer, bitmap);
821}
822
823#endif // USE_OPENGL_RENDERER
824
825// ----------------------------------------------------------------------------
826// Common
827// ----------------------------------------------------------------------------
828
829static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
830#ifdef USE_OPENGL_RENDERER
831    char prop[PROPERTY_VALUE_MAX];
832    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
833        // not in the emulator
834        return JNI_TRUE;
835    }
836    // In the emulator this property will be set to 1 when hardware GLES is
837    // enabled, 0 otherwise. On old emulator versions it will be undefined.
838    property_get("ro.kernel.qemu.gles", prop, "0");
839    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
840#else
841    return JNI_FALSE;
842#endif
843}
844
845// ----------------------------------------------------------------------------
846// Logging
847// ----------------------------------------------------------------------------
848
849static void
850android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
851#ifdef USE_OPENGL_RENDERER
852    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
853    android::uirenderer::DisplayList::outputLogBuffer(fd);
854#endif // USE_OPENGL_RENDERER
855}
856
857// ----------------------------------------------------------------------------
858// JNI Glue
859// ----------------------------------------------------------------------------
860
861const char* const kClassPathName = "android/view/GLES20Canvas";
862
863static JNINativeMethod gMethods[] = {
864    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
865
866#ifdef USE_OPENGL_RENDERER
867    { "nFlushCaches",       "(I)V",            (void*) android_view_GLES20Canvas_flushCaches },
868    { "nInitCaches",        "()V",             (void*) android_view_GLES20Canvas_initCaches },
869    { "nTerminateCaches",   "()V",             (void*) android_view_GLES20Canvas_terminateCaches },
870
871    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
872    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
873    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
874    { "nPrepare",           "(IZ)I",           (void*) android_view_GLES20Canvas_prepare },
875    { "nPrepareDirty",      "(IIIIIZ)I",       (void*) android_view_GLES20Canvas_prepareDirty },
876    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
877
878    { "nGetStencilSize",    "()I",             (void*) android_view_GLES20Canvas_getStencilSize },
879
880    { "nCallDrawGLFunction", "(II)I",          (void*) android_view_GLES20Canvas_callDrawGLFunction },
881    { "nDetachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_detachFunctor },
882    { "nAttachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_attachFunctor },
883    { "nInvokeFunctors",     "(ILandroid/graphics/Rect;)I",
884            (void*) android_view_GLES20Canvas_invokeFunctors },
885
886    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
887    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
888    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
889    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
890
891    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
892    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
893    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
894    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
895
896    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
897    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
898    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
899
900    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
901    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
902    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
903    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
904
905    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
906    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
907    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
908
909    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
910    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
911    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
912    { "nDrawBitmap",        "(I[IIIFFIIZI)V",  (void*) android_view_GLES20Canvas_drawBitmapData },
913
914    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
915
916    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
917
918    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
919    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
920    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
921    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
922    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
923    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
924    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
925    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
926
927    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
928    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
929
930    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
931    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
932    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
933    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
934
935    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
936    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
937
938    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
939    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
940            (void*) android_view_GLES20Canvas_drawText },
941
942    { "nDrawTextOnPath",    "(I[CIIIFFII)V",   (void*) android_view_GLES20Canvas_drawTextArrayOnPath },
943    { "nDrawTextOnPath",    "(ILjava/lang/String;IIIFFII)V",
944            (void*) android_view_GLES20Canvas_drawTextOnPath },
945
946    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
947    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
948            (void*) android_view_GLES20Canvas_drawTextRun },
949
950    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
951    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
952            (void*) android_view_GLES20Canvas_drawPosText },
953
954    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
955            (void*) android_view_GLES20Canvas_getClipBounds },
956
957    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
958    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
959    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
960    { "nSetDisplayListName",     "(ILjava/lang/String;)V",
961            (void*) android_view_GLES20Canvas_setDisplayListName },
962    { "nDrawDisplayList",        "(IILandroid/graphics/Rect;I)I",
963            (void*) android_view_GLES20Canvas_drawDisplayList },
964
965    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
966    { "nResetDisplayListRenderer",  "(I)V",    (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
967
968    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
969    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
970    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
971
972    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
973    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
974    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
975    { "nSetOpaqueLayer",         "(IZ)V",      (void*) android_view_GLES20Canvas_setOpaqueLayer },
976    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
977    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
978            (void*) android_view_GLES20Canvas_updateTextureLayer },
979    { "nUpdateRenderLayer",      "(IIIIIII)V", (void*) android_view_GLES20Canvas_updateRenderLayer },
980    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
981    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
982    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
983    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
984
985    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
986
987    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
988    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
989
990#endif
991};
992
993static JNINativeMethod gActivityThreadMethods[] = {
994    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
995                                               (void*) android_app_ActivityThread_dumpGraphics }
996};
997
998
999#ifdef USE_OPENGL_RENDERER
1000    #define FIND_CLASS(var, className) \
1001            var = env->FindClass(className); \
1002            LOG_FATAL_IF(! var, "Unable to find class " className);
1003
1004    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
1005            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
1006            LOG_FATAL_IF(! var, "Unable to find method " methodName);
1007#else
1008    #define FIND_CLASS(var, className)
1009    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
1010#endif
1011
1012int register_android_view_GLES20Canvas(JNIEnv* env) {
1013    jclass clazz;
1014    FIND_CLASS(clazz, "android/graphics/Rect");
1015    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
1016
1017    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
1018}
1019
1020const char* const kActivityThreadPathName = "android/app/ActivityThread";
1021
1022int register_android_app_ActivityThread(JNIEnv* env) {
1023    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
1024            gActivityThreadMethods, NELEM(gActivityThreadMethods));
1025}
1026
1027};
1028