android_view_GLES20Canvas.cpp revision 0baaac5e9adf3ee280ae1239e2e58754a9d2b099 
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 <Stencil.h>
50#include <Rect.h>
51
52#include <TextLayout.h>
53#include <TextLayoutCache.h>
54
55namespace android {
56
57using namespace uirenderer;
58
59/**
60 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
61 *       devices. This means all the logic must be compiled only when the
62 *       preprocessor variable USE_OPENGL_RENDERER is defined.
63 */
64#ifdef USE_OPENGL_RENDERER
65
66// ----------------------------------------------------------------------------
67// Defines
68// ----------------------------------------------------------------------------
69
70// Debug
71#define DEBUG_RENDERER 0
72
73// Debug
74#if DEBUG_RENDERER
75    #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
76#else
77    #define RENDERER_LOGD(...)
78#endif
79
80#define MODIFIER_SHADOW 1
81#define MODIFIER_SHADER 2
82#define MODIFIER_COLOR_FILTER 4
83
84// ----------------------------------------------------------------------------
85
86static struct {
87    jmethodID set;
88} gRectClassInfo;
89
90// ----------------------------------------------------------------------------
91// Caching
92// ----------------------------------------------------------------------------
93
94static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
95        Caches::FlushMode mode) {
96    if (Caches::hasInstance()) {
97        Caches::getInstance().flush(mode);
98    }
99}
100
101static void android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
102    if (Caches::hasInstance()) {
103        Caches::getInstance().init();
104    }
105}
106
107static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
108    if (Caches::hasInstance()) {
109        Caches::getInstance().terminate();
110    }
111}
112
113// ----------------------------------------------------------------------------
114// Constructors
115// ----------------------------------------------------------------------------
116
117static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
118    RENDERER_LOGD("Create OpenGLRenderer");
119    return new OpenGLRenderer;
120}
121
122static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
123        OpenGLRenderer* renderer) {
124    RENDERER_LOGD("Destroy OpenGLRenderer");
125    delete renderer;
126}
127
128// ----------------------------------------------------------------------------
129// Setup
130// ----------------------------------------------------------------------------
131
132static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
133        OpenGLRenderer* renderer, jint width, jint height) {
134    renderer->setViewport(width, height);
135}
136
137static int android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
138        OpenGLRenderer* renderer, jboolean opaque) {
139    return renderer->prepare(opaque);
140}
141
142static int android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
143        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
144        jboolean opaque) {
145    return renderer->prepareDirty(left, top, right, bottom, opaque);
146}
147
148static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
149        OpenGLRenderer* renderer) {
150    renderer->finish();
151}
152
153static jint android_view_GLES20Canvas_getStencilSize(JNIEnv* env, jobject clazz) {
154    return Stencil::getStencilSize();
155}
156
157// ----------------------------------------------------------------------------
158// Functor
159// ----------------------------------------------------------------------------
160
161static jint android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
162        OpenGLRenderer* renderer, Functor* functor) {
163    android::uirenderer::Rect dirty;
164    return renderer->callDrawGLFunction(functor, dirty);
165}
166
167static void android_view_GLES20Canvas_detachFunctor(JNIEnv* env,
168        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
169    renderer->detachFunctor(functor);
170}
171
172static void android_view_GLES20Canvas_attachFunctor(JNIEnv* env,
173        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
174    renderer->attachFunctor(functor);
175}
176
177static jint android_view_GLES20Canvas_invokeFunctors(JNIEnv* env,
178        jobject clazz, OpenGLRenderer* renderer, jobject dirty) {
179    android::uirenderer::Rect bounds;
180    status_t status = renderer->invokeFunctors(bounds);
181    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
182        env->CallVoidMethod(dirty, gRectClassInfo.set,
183                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
184    }
185    return status;
186}
187
188// ----------------------------------------------------------------------------
189// Misc
190// ----------------------------------------------------------------------------
191
192static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
193    return Caches::getInstance().maxTextureSize;
194}
195
196static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
197    return Caches::getInstance().maxTextureSize;
198}
199
200// ----------------------------------------------------------------------------
201// State
202// ----------------------------------------------------------------------------
203
204static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
205        jint flags) {
206    return renderer->save(flags);
207}
208
209static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
210        OpenGLRenderer* renderer) {
211    return renderer->getSaveCount();
212}
213
214static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
215        OpenGLRenderer* renderer) {
216    renderer->restore();
217}
218
219static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
220        OpenGLRenderer* renderer, jint saveCount) {
221    renderer->restoreToCount(saveCount);
222}
223
224// ----------------------------------------------------------------------------
225// Layers
226// ----------------------------------------------------------------------------
227
228static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
229        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
230        SkPaint* paint, jint saveFlags) {
231    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
232}
233
234static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
235        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
236    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
237    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
238            paint, saveFlags);
239}
240
241static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
242        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
243        jint alpha, jint saveFlags) {
244    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
245}
246
247static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
248        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
249    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
250    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
251            alpha, saveFlags);
252}
253
254// ----------------------------------------------------------------------------
255// Clipping
256// ----------------------------------------------------------------------------
257
258static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
259        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
260        SkCanvas::EdgeType edge) {
261    return renderer->quickReject(left, top, right, bottom);
262}
263
264static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
265        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
266        SkRegion::Op op) {
267    return renderer->clipRect(left, top, right, bottom, op);
268}
269
270static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
271        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
272        SkRegion::Op op) {
273    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
274}
275
276static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
277        OpenGLRenderer* renderer, jobject rect) {
278    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
279
280    env->CallVoidMethod(rect, gRectClassInfo.set,
281            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
282
283    return !bounds.isEmpty();
284}
285
286// ----------------------------------------------------------------------------
287// Transforms
288// ----------------------------------------------------------------------------
289
290static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
291        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
292    renderer->translate(dx, dy);
293}
294
295static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
296        OpenGLRenderer* renderer, jfloat degrees) {
297    renderer->rotate(degrees);
298}
299
300static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
301        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
302    renderer->scale(sx, sy);
303}
304
305static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
306        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
307    renderer->skew(sx, sy);
308}
309
310static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
311        OpenGLRenderer* renderer, SkMatrix* matrix) {
312    renderer->setMatrix(matrix);
313}
314
315static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
316        OpenGLRenderer* renderer, SkMatrix* matrix) {
317    renderer->getMatrix(matrix);
318}
319
320static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
321        OpenGLRenderer* renderer, SkMatrix* matrix) {
322    renderer->concatMatrix(matrix);
323}
324
325// ----------------------------------------------------------------------------
326// Drawing
327// ----------------------------------------------------------------------------
328
329static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
330        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
331        jfloat left, jfloat top, SkPaint* paint) {
332    // This object allows the renderer to allocate a global JNI ref to the buffer object.
333    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
334
335    renderer->drawBitmap(bitmap, left, top, paint);
336}
337
338static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
339        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
340        float srcLeft, float srcTop, float srcRight, float srcBottom,
341        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
342    // This object allows the renderer to allocate a global JNI ref to the buffer object.
343    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
344
345    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
346            dstLeft, dstTop, dstRight, dstBottom, paint);
347}
348
349static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
350        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
351        SkPaint* paint) {
352    // This object allows the renderer to allocate a global JNI ref to the buffer object.
353    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
354
355    renderer->drawBitmap(bitmap, matrix, paint);
356}
357
358static void android_view_GLES20Canvas_drawBitmapData(JNIEnv* env, jobject clazz,
359        OpenGLRenderer* renderer, jintArray colors, jint offset, jint stride,
360        jfloat left, jfloat top, jint width, jint height, jboolean hasAlpha, SkPaint* paint) {
361    SkBitmap* bitmap = new SkBitmap;
362    bitmap->setConfig(hasAlpha ? SkBitmap::kARGB_8888_Config : SkBitmap::kRGB_565_Config,
363            width, height);
364
365    if (!bitmap->allocPixels()) {
366        delete bitmap;
367        return;
368    }
369
370    if (!GraphicsJNI::SetPixels(env, colors, offset, stride, 0, 0, width, height, *bitmap)) {
371        delete bitmap;
372        return;
373    }
374
375    renderer->drawBitmapData(bitmap, left, top, paint);
376
377    // If the renderer is a deferred renderer it will own the bitmap
378    if (!renderer->isDeferred()) {
379        delete bitmap;
380    }
381}
382
383static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
384        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
385        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
386        jintArray colors, jint colorOffset, SkPaint* paint) {
387    // This object allows the renderer to allocate a global JNI ref to the buffer object.
388    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
389
390    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
391    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
392
393    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
394
395    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
396    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
397}
398
399static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
400        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
401        float left, float top, float right, float bottom, SkPaint* paint) {
402    // This object allows the renderer to allocate a global JNI ref to the buffer object.
403    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
404
405    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
406    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
407    Res_png_9patch::deserialize(patch);
408
409    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
410            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
411            left, top, right, bottom, paint);
412
413    env->ReleaseByteArrayElements(chunks, storage, 0);
414}
415
416static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
417        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
418    renderer->drawColor(color, mode);
419}
420
421static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
422        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
423        SkPaint* paint) {
424    renderer->drawRect(left, top, right, bottom, paint);
425}
426
427static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
428        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
429        jfloat rx, jfloat ry, SkPaint* paint) {
430    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
431}
432
433static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
434        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
435    renderer->drawCircle(x, y, radius, paint);
436}
437
438static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
439        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
440        SkPaint* paint) {
441    renderer->drawOval(left, top, right, bottom, paint);
442}
443
444static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
445        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
446        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
447    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
448}
449
450static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
451        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
452    SkRegion::Iterator it(*region);
453    while (!it.done()) {
454        const SkIRect& r = it.rect();
455        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
456        it.next();
457    }
458}
459
460static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
461        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
462    jfloat* storage = env->GetFloatArrayElements(points, NULL);
463    renderer->drawPoints(storage + offset, count, paint);
464    env->ReleaseFloatArrayElements(points, storage, 0);
465}
466
467static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
468        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
469    renderer->drawPath(path, paint);
470}
471
472static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
473        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
474    jfloat* storage = env->GetFloatArrayElements(points, NULL);
475    renderer->drawLines(storage + offset, count, paint);
476    env->ReleaseFloatArrayElements(points, storage, 0);
477}
478
479// ----------------------------------------------------------------------------
480// Shaders and color filters
481// ----------------------------------------------------------------------------
482
483static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
484        OpenGLRenderer* renderer, jint modifiers) {
485    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
486    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
487    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
488}
489
490static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
491        OpenGLRenderer* renderer, SkiaShader* shader) {
492    renderer->setupShader(shader);
493}
494
495static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
496        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
497    renderer->setupColorFilter(filter);
498}
499
500static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
501        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
502    renderer->setupShadow(radius, dx, dy, color);
503}
504
505// ----------------------------------------------------------------------------
506// Draw filters
507// ----------------------------------------------------------------------------
508
509static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
510        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
511    renderer->setupPaintFilter(clearBits, setBits);
512}
513
514static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
515        OpenGLRenderer* renderer) {
516    renderer->resetPaintFilter();
517}
518
519// ----------------------------------------------------------------------------
520// Text
521// ----------------------------------------------------------------------------
522
523static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
524        jfloat x, jfloat y, int flags, SkPaint* paint) {
525    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
526            text, 0, count, count, flags);
527    if (value == NULL) {
528        return;
529    }
530    const jchar* glyphs = value->getGlyphs();
531    size_t glyphsCount = value->getGlyphsCount();
532    jfloat totalAdvance = value->getTotalAdvance();
533    const float* positions = value->getPos();
534    int bytesCount = glyphsCount * sizeof(jchar);
535    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y,
536            positions, paint, totalAdvance);
537}
538
539static void renderTextOnPath(OpenGLRenderer* renderer, const jchar* text, int count,
540        SkPath* path, jfloat hOffset, jfloat vOffset, int flags, SkPaint* paint) {
541    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
542            text, 0, count, count, flags);
543    if (value == NULL) {
544        return;
545    }
546    const jchar* glyphs = value->getGlyphs();
547    size_t glyphsCount = value->getGlyphsCount();
548    int bytesCount = glyphsCount * sizeof(jchar);
549    renderer->drawTextOnPath((const char*) glyphs, bytesCount, glyphsCount, path,
550            hOffset, vOffset, paint);
551}
552
553static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
554        jint start, jint count, jint contextCount, jfloat x, jfloat y,
555        int flags, SkPaint* paint) {
556    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
557            text, start, count, contextCount, flags);
558    if (value == NULL) {
559        return;
560    }
561    const jchar* glyphs = value->getGlyphs();
562    size_t glyphsCount = value->getGlyphsCount();
563    jfloat totalAdvance = value->getTotalAdvance();
564    const float* positions = value->getPos();
565    int bytesCount = glyphsCount * sizeof(jchar);
566    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y,
567            positions, paint, totalAdvance);
568}
569
570static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
571        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
572        jfloat x, jfloat y, jint flags, SkPaint* paint) {
573    jchar* textArray = env->GetCharArrayElements(text, NULL);
574    renderText(renderer, textArray + index, count, x, y, flags, paint);
575    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
576}
577
578static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
579        OpenGLRenderer* renderer, jstring text, jint start, jint end,
580        jfloat x, jfloat y, jint flags, SkPaint* paint) {
581    const jchar* textArray = env->GetStringChars(text, NULL);
582    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
583    env->ReleaseStringChars(text, textArray);
584}
585
586static void android_view_GLES20Canvas_drawTextArrayOnPath(JNIEnv* env, jobject clazz,
587        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
588        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
589    jchar* textArray = env->GetCharArrayElements(text, NULL);
590    renderTextOnPath(renderer, textArray + index, count, path,
591            hOffset, vOffset, flags, paint);
592    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
593}
594
595static void android_view_GLES20Canvas_drawTextOnPath(JNIEnv* env, jobject clazz,
596        OpenGLRenderer* renderer, jstring text, jint start, jint end,
597        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
598    const jchar* textArray = env->GetStringChars(text, NULL);
599    renderTextOnPath(renderer, textArray + start, end - start, path,
600            hOffset, vOffset, flags, paint);
601    env->ReleaseStringChars(text, textArray);
602}
603
604static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
605        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
606        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
607        SkPaint* paint) {
608    jchar* textArray = env->GetCharArrayElements(text, NULL);
609    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
610            count, contextCount, x, y, dirFlags, paint);
611    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
612 }
613
614static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
615        OpenGLRenderer* renderer, jstring text, jint start, jint end,
616        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
617        SkPaint* paint) {
618    const jchar* textArray = env->GetStringChars(text, NULL);
619    jint count = end - start;
620    jint contextCount = contextEnd - contextStart;
621    renderTextRun(renderer, textArray + contextStart, start - contextStart,
622            count, contextCount, x, y, dirFlags, paint);
623    env->ReleaseStringChars(text, textArray);
624}
625
626static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
627        const jfloat* positions, jint dirFlags, SkPaint* paint) {
628    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
629            text, 0, count, count, dirFlags);
630    if (value == NULL) {
631        return;
632    }
633    const jchar* glyphs = value->getGlyphs();
634    size_t glyphsCount = value->getGlyphsCount();
635    if (count < int(glyphsCount)) glyphsCount = count;
636    int bytesCount = glyphsCount * sizeof(jchar);
637
638    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
639}
640
641static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
642        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
643        jfloatArray pos, SkPaint* paint) {
644    jchar* textArray = env->GetCharArrayElements(text, NULL);
645    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
646
647    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
648
649    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
650    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
651}
652
653static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
654        OpenGLRenderer* renderer, jstring text, jint start, jint end,
655        jfloatArray pos, SkPaint* paint) {
656    const jchar* textArray = env->GetStringChars(text, NULL);
657    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
658
659    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
660
661    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
662    env->ReleaseStringChars(text, textArray);
663}
664
665// ----------------------------------------------------------------------------
666// Display lists
667// ----------------------------------------------------------------------------
668
669static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
670        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
671    return renderer->getDisplayList(displayList);
672}
673
674static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
675        jobject clazz, DisplayList* displayList) {
676    return displayList->getSize();
677}
678
679static void android_view_GLES20Canvas_setDisplayListName(JNIEnv* env,
680        jobject clazz, DisplayList* displayList, jstring name) {
681    if (name != NULL) {
682        const char* textArray = env->GetStringUTFChars(name, NULL);
683        displayList->setName(textArray);
684        env->ReleaseStringUTFChars(name, textArray);
685    }
686}
687
688static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
689        jobject clazz) {
690    return new DisplayListRenderer;
691}
692
693static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
694        jobject clazz, DisplayListRenderer* renderer) {
695    renderer->reset();
696}
697
698static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
699        jobject clazz, DisplayList* displayList) {
700    DisplayList::destroyDisplayListDeferred(displayList);
701}
702
703static jint android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
704        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
705        jobject dirty, jint flags) {
706    android::uirenderer::Rect bounds;
707    status_t status = renderer->drawDisplayList(displayList, bounds, flags);
708    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
709        env->CallVoidMethod(dirty, gRectClassInfo.set,
710                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
711    }
712    return status;
713}
714
715static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
716        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
717    renderer->outputDisplayList(displayList);
718}
719
720// ----------------------------------------------------------------------------
721// Layers
722// ----------------------------------------------------------------------------
723
724static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
725        OpenGLRenderer* renderer) {
726    renderer->interrupt();
727}
728
729static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
730        OpenGLRenderer* renderer) {
731    renderer->resume();
732}
733
734static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
735        jobject clazz, Layer* layer) {
736    if (layer) {
737        return new LayerRenderer(layer);
738    }
739    return NULL;
740}
741
742static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
743        jboolean isOpaque, jintArray layerInfo) {
744    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
745
746    if (layer) {
747        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
748        storage[0] = layer->getTexture();
749        env->ReleaseIntArrayElements(layerInfo, storage, 0);
750    }
751
752    return layer;
753}
754
755static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
756        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
757    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
758
759    if (layer) {
760        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
761        storage[0] = layer->getWidth();
762        storage[1] = layer->getHeight();
763        env->ReleaseIntArrayElements(layerInfo, storage, 0);
764    }
765
766    return layer;
767}
768
769static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
770        Layer* layer, jint width, jint height, jintArray layerInfo) {
771    LayerRenderer::resizeLayer(layer, width, height);
772
773    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
774    storage[0] = layer->getWidth();
775    storage[1] = layer->getHeight();
776    env->ReleaseIntArrayElements(layerInfo, storage, 0);
777}
778
779static void android_view_GLES20Canvas_setOpaqueLayer(JNIEnv* env, jobject clazz,
780        Layer* layer, jboolean isOpaque) {
781    if (layer) {
782        layer->setBlend(!isOpaque);
783    }
784}
785
786static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
787        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
788    float transform[16];
789    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
790
791    if (surfaceTexture->updateTexImage() == NO_ERROR) {
792        surfaceTexture->getTransformMatrix(transform);
793        GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
794
795        LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
796    }
797}
798
799static void android_view_GLES20Canvas_updateRenderLayer(JNIEnv* env, jobject clazz,
800        Layer* layer, OpenGLRenderer* renderer, DisplayList* displayList,
801        jint left, jint top, jint right, jint bottom) {
802    layer->updateDeferred(renderer, displayList, left, top, right, bottom);
803}
804
805static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
806        Layer* layer, SkMatrix* matrix) {
807
808    layer->getTransform().load(*matrix);
809}
810
811static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
812    LayerRenderer::destroyLayer(layer);
813}
814
815static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
816        jobject clazz, Layer* layer) {
817    LayerRenderer::destroyLayerDeferred(layer);
818}
819
820static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
821        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
822    renderer->drawLayer(layer, x, y, paint);
823}
824
825static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
826        Layer* layer, SkBitmap* bitmap) {
827    return LayerRenderer::copyLayer(layer, bitmap);
828}
829
830#endif // USE_OPENGL_RENDERER
831
832// ----------------------------------------------------------------------------
833// Common
834// ----------------------------------------------------------------------------
835
836static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
837#ifdef USE_OPENGL_RENDERER
838    char prop[PROPERTY_VALUE_MAX];
839    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
840        // not in the emulator
841        return JNI_TRUE;
842    }
843    // In the emulator this property will be set to 1 when hardware GLES is
844    // enabled, 0 otherwise. On old emulator versions it will be undefined.
845    property_get("ro.kernel.qemu.gles", prop, "0");
846    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
847#else
848    return JNI_FALSE;
849#endif
850}
851
852// ----------------------------------------------------------------------------
853// Logging
854// ----------------------------------------------------------------------------
855
856static void
857android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
858#ifdef USE_OPENGL_RENDERER
859    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
860    android::uirenderer::DisplayList::outputLogBuffer(fd);
861#endif // USE_OPENGL_RENDERER
862}
863
864// ----------------------------------------------------------------------------
865// JNI Glue
866// ----------------------------------------------------------------------------
867
868const char* const kClassPathName = "android/view/GLES20Canvas";
869
870static JNINativeMethod gMethods[] = {
871    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
872
873#ifdef USE_OPENGL_RENDERER
874    { "nFlushCaches",       "(I)V",            (void*) android_view_GLES20Canvas_flushCaches },
875    { "nInitCaches",        "()V",             (void*) android_view_GLES20Canvas_initCaches },
876    { "nTerminateCaches",   "()V",             (void*) android_view_GLES20Canvas_terminateCaches },
877
878    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
879    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
880    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
881    { "nPrepare",           "(IZ)I",           (void*) android_view_GLES20Canvas_prepare },
882    { "nPrepareDirty",      "(IIIIIZ)I",       (void*) android_view_GLES20Canvas_prepareDirty },
883    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
884
885    { "nGetStencilSize",    "()I",             (void*) android_view_GLES20Canvas_getStencilSize },
886
887    { "nCallDrawGLFunction", "(II)I",          (void*) android_view_GLES20Canvas_callDrawGLFunction },
888    { "nDetachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_detachFunctor },
889    { "nAttachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_attachFunctor },
890    { "nInvokeFunctors",     "(ILandroid/graphics/Rect;)I",
891            (void*) android_view_GLES20Canvas_invokeFunctors },
892
893    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
894    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
895    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
896    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
897
898    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
899    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
900    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
901    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
902
903    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
904    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
905    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
906
907    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
908    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
909    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
910    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
911
912    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
913    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
914    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
915
916    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
917    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
918    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
919    { "nDrawBitmap",        "(I[IIIFFIIZI)V",  (void*) android_view_GLES20Canvas_drawBitmapData },
920
921    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
922
923    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
924
925    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
926    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
927    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
928    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
929    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
930    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
931    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
932    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
933
934    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
935    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
936
937    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
938    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
939    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
940    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
941
942    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
943    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
944
945    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
946    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
947            (void*) android_view_GLES20Canvas_drawText },
948
949    { "nDrawTextOnPath",    "(I[CIIIFFII)V",   (void*) android_view_GLES20Canvas_drawTextArrayOnPath },
950    { "nDrawTextOnPath",    "(ILjava/lang/String;IIIFFII)V",
951            (void*) android_view_GLES20Canvas_drawTextOnPath },
952
953    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
954    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
955            (void*) android_view_GLES20Canvas_drawTextRun },
956
957    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
958    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
959            (void*) android_view_GLES20Canvas_drawPosText },
960
961    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
962            (void*) android_view_GLES20Canvas_getClipBounds },
963
964    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
965    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
966    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
967    { "nSetDisplayListName",     "(ILjava/lang/String;)V",
968            (void*) android_view_GLES20Canvas_setDisplayListName },
969    { "nDrawDisplayList",        "(IILandroid/graphics/Rect;I)I",
970            (void*) android_view_GLES20Canvas_drawDisplayList },
971
972    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
973    { "nResetDisplayListRenderer",  "(I)V",    (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
974
975    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
976    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
977    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
978
979    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
980    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
981    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
982    { "nSetOpaqueLayer",         "(IZ)V",      (void*) android_view_GLES20Canvas_setOpaqueLayer },
983    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
984    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
985            (void*) android_view_GLES20Canvas_updateTextureLayer },
986    { "nUpdateRenderLayer",      "(IIIIIII)V", (void*) android_view_GLES20Canvas_updateRenderLayer },
987    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
988    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
989    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
990    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
991
992    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
993
994    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
995    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
996
997#endif
998};
999
1000static JNINativeMethod gActivityThreadMethods[] = {
1001    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
1002                                               (void*) android_app_ActivityThread_dumpGraphics }
1003};
1004
1005
1006#ifdef USE_OPENGL_RENDERER
1007    #define FIND_CLASS(var, className) \
1008            var = env->FindClass(className); \
1009            LOG_FATAL_IF(! var, "Unable to find class " className);
1010
1011    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
1012            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
1013            LOG_FATAL_IF(! var, "Unable to find method " methodName);
1014#else
1015    #define FIND_CLASS(var, className)
1016    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
1017#endif
1018
1019int register_android_view_GLES20Canvas(JNIEnv* env) {
1020    jclass clazz;
1021    FIND_CLASS(clazz, "android/graphics/Rect");
1022    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
1023
1024    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
1025}
1026
1027const char* const kActivityThreadPathName = "android/app/ActivityThread";
1028
1029int register_android_app_ActivityThread(JNIEnv* env) {
1030    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
1031            gActivityThreadMethods, NELEM(gActivityThreadMethods));
1032}
1033
1034};
1035