android_view_GLES20Canvas.cpp revision d47f7d8b5fe3a3861d7cbdc5f912235407823c8e 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OpenGLRenderer"
18
19#include <EGL/egl.h>
20
21#include "jni.h"
22#include "GraphicsJNI.h"
23#include <nativehelper/JNIHelp.h>
24
25#include <android_runtime/AndroidRuntime.h>
26#include <android_runtime/android_graphics_SurfaceTexture.h>
27#include <gui/GLConsumer.h>
28
29#include <androidfw/ResourceTypes.h>
30
31#include <private/hwui/DrawGlInfo.h>
32
33#include <cutils/properties.h>
34
35#include <SkBitmap.h>
36#include <SkCanvas.h>
37#include <SkMatrix.h>
38#include <SkPaint.h>
39#include <SkRegion.h>
40#include <SkScalerContext.h>
41#include <SkTemplates.h>
42#include <SkXfermode.h>
43
44#include <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    OpenGLRenderer* renderer = new OpenGLRenderer();
120    renderer->initProperties();
121    return renderer;
122}
123
124static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
125        OpenGLRenderer* renderer) {
126    RENDERER_LOGD("Destroy OpenGLRenderer");
127    delete renderer;
128}
129
130// ----------------------------------------------------------------------------
131// Setup
132// ----------------------------------------------------------------------------
133
134static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
135        OpenGLRenderer* renderer, jint width, jint height) {
136    renderer->setViewport(width, height);
137}
138
139static int android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
140        OpenGLRenderer* renderer, jboolean opaque) {
141    return renderer->prepare(opaque);
142}
143
144static int android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
145        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
146        jboolean opaque) {
147    return renderer->prepareDirty(left, top, right, bottom, opaque);
148}
149
150static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
151        OpenGLRenderer* renderer) {
152    renderer->finish();
153}
154
155static jint android_view_GLES20Canvas_getStencilSize(JNIEnv* env, jobject clazz) {
156    return Stencil::getStencilSize();
157}
158
159// ----------------------------------------------------------------------------
160// Functor
161// ----------------------------------------------------------------------------
162
163static jint android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
164        OpenGLRenderer* renderer, Functor* functor) {
165    android::uirenderer::Rect dirty;
166    return renderer->callDrawGLFunction(functor, dirty);
167}
168
169static void android_view_GLES20Canvas_detachFunctor(JNIEnv* env,
170        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
171    renderer->detachFunctor(functor);
172}
173
174static void android_view_GLES20Canvas_attachFunctor(JNIEnv* env,
175        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
176    renderer->attachFunctor(functor);
177}
178
179static jint android_view_GLES20Canvas_invokeFunctors(JNIEnv* env,
180        jobject clazz, OpenGLRenderer* renderer, jobject dirty) {
181    android::uirenderer::Rect bounds;
182    status_t status = renderer->invokeFunctors(bounds);
183    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
184        env->CallVoidMethod(dirty, gRectClassInfo.set,
185                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
186    }
187    return status;
188}
189
190// ----------------------------------------------------------------------------
191// Misc
192// ----------------------------------------------------------------------------
193
194static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
195    return Caches::getInstance().maxTextureSize;
196}
197
198static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
199    return Caches::getInstance().maxTextureSize;
200}
201
202// ----------------------------------------------------------------------------
203// State
204// ----------------------------------------------------------------------------
205
206static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
207        jint flags) {
208    return renderer->save(flags);
209}
210
211static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
212        OpenGLRenderer* renderer) {
213    return renderer->getSaveCount();
214}
215
216static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
217        OpenGLRenderer* renderer) {
218    renderer->restore();
219}
220
221static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
222        OpenGLRenderer* renderer, jint saveCount) {
223    renderer->restoreToCount(saveCount);
224}
225
226// ----------------------------------------------------------------------------
227// Layers
228// ----------------------------------------------------------------------------
229
230static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
231        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
232        SkPaint* paint, jint saveFlags) {
233    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
234}
235
236static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
237        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
238    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
239    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
240            paint, saveFlags);
241}
242
243static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
244        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
245        jint alpha, jint saveFlags) {
246    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
247}
248
249static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
250        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
251    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
252    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
253            alpha, saveFlags);
254}
255
256// ----------------------------------------------------------------------------
257// Clipping
258// ----------------------------------------------------------------------------
259
260static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
261        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
262        SkCanvas::EdgeType edge) {
263    return renderer->quickReject(left, top, right, bottom);
264}
265
266static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
267        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
268        SkRegion::Op op) {
269    return renderer->clipRect(left, top, right, bottom, op);
270}
271
272static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
273        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
274        SkRegion::Op op) {
275    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
276}
277
278static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
279        OpenGLRenderer* renderer, jobject rect) {
280    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
281
282    env->CallVoidMethod(rect, gRectClassInfo.set,
283            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
284
285    return !bounds.isEmpty();
286}
287
288// ----------------------------------------------------------------------------
289// Transforms
290// ----------------------------------------------------------------------------
291
292static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
293        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
294    renderer->translate(dx, dy);
295}
296
297static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
298        OpenGLRenderer* renderer, jfloat degrees) {
299    renderer->rotate(degrees);
300}
301
302static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
303        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
304    renderer->scale(sx, sy);
305}
306
307static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
308        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
309    renderer->skew(sx, sy);
310}
311
312static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
313        OpenGLRenderer* renderer, SkMatrix* matrix) {
314    renderer->setMatrix(matrix);
315}
316
317static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
318        OpenGLRenderer* renderer, SkMatrix* matrix) {
319    renderer->getMatrix(matrix);
320}
321
322static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
323        OpenGLRenderer* renderer, SkMatrix* matrix) {
324    renderer->concatMatrix(matrix);
325}
326
327// ----------------------------------------------------------------------------
328// Drawing
329// ----------------------------------------------------------------------------
330
331static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
332        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
333        jfloat left, jfloat top, SkPaint* paint) {
334    // This object allows the renderer to allocate a global JNI ref to the buffer object.
335    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
336
337    renderer->drawBitmap(bitmap, left, top, paint);
338}
339
340static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
341        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
342        float srcLeft, float srcTop, float srcRight, float srcBottom,
343        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
344    // This object allows the renderer to allocate a global JNI ref to the buffer object.
345    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
346
347    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
348            dstLeft, dstTop, dstRight, dstBottom, paint);
349}
350
351static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
352        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
353        SkPaint* paint) {
354    // This object allows the renderer to allocate a global JNI ref to the buffer object.
355    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
356
357    renderer->drawBitmap(bitmap, matrix, paint);
358}
359
360static void android_view_GLES20Canvas_drawBitmapData(JNIEnv* env, jobject clazz,
361        OpenGLRenderer* renderer, jintArray colors, jint offset, jint stride,
362        jfloat left, jfloat top, jint width, jint height, jboolean hasAlpha, SkPaint* paint) {
363    SkBitmap* bitmap = new SkBitmap;
364    bitmap->setConfig(hasAlpha ? SkBitmap::kARGB_8888_Config : SkBitmap::kRGB_565_Config,
365            width, height);
366
367    if (!bitmap->allocPixels()) {
368        delete bitmap;
369        return;
370    }
371
372    if (!GraphicsJNI::SetPixels(env, colors, offset, stride, 0, 0, width, height, *bitmap)) {
373        delete bitmap;
374        return;
375    }
376
377    renderer->drawBitmapData(bitmap, left, top, paint);
378
379    // If the renderer is a deferred renderer it will own the bitmap
380    if (!renderer->isDeferred()) {
381        delete bitmap;
382    }
383}
384
385static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
386        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
387        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
388        jintArray colors, jint colorOffset, SkPaint* paint) {
389    // This object allows the renderer to allocate a global JNI ref to the buffer object.
390    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
391
392    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
393    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
394
395    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
396
397    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
398    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
399}
400
401static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
402        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
403        float left, float top, float right, float bottom, SkPaint* paint) {
404    // This object allows the renderer to allocate a global JNI ref to the buffer object.
405    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
406
407    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
408    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
409    Res_png_9patch::deserialize(patch);
410
411    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
412            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
413            left, top, right, bottom, paint);
414
415    env->ReleaseByteArrayElements(chunks, storage, 0);
416}
417
418static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
419        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
420    renderer->drawColor(color, mode);
421}
422
423static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
424        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
425        SkPaint* paint) {
426    renderer->drawRect(left, top, right, bottom, paint);
427}
428
429static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
430        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
431        jfloat rx, jfloat ry, SkPaint* paint) {
432    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
433}
434
435static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
436        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
437    renderer->drawCircle(x, y, radius, paint);
438}
439
440static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
441        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
442        SkPaint* paint) {
443    renderer->drawOval(left, top, right, bottom, paint);
444}
445
446static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
447        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
448        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
449    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
450}
451
452static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
453        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
454    SkRegion::Iterator it(*region);
455    while (!it.done()) {
456        const SkIRect& r = it.rect();
457        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
458        it.next();
459    }
460}
461
462static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
463        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
464    jfloat* storage = env->GetFloatArrayElements(points, NULL);
465    renderer->drawPoints(storage + offset, count, paint);
466    env->ReleaseFloatArrayElements(points, storage, 0);
467}
468
469static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
470        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
471    renderer->drawPath(path, paint);
472}
473
474static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
475        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
476    jfloat* storage = env->GetFloatArrayElements(points, NULL);
477    renderer->drawLines(storage + offset, count, paint);
478    env->ReleaseFloatArrayElements(points, storage, 0);
479}
480
481// ----------------------------------------------------------------------------
482// Shaders and color filters
483// ----------------------------------------------------------------------------
484
485static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
486        OpenGLRenderer* renderer, jint modifiers) {
487    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
488    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
489    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
490}
491
492static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
493        OpenGLRenderer* renderer, SkiaShader* shader) {
494    renderer->setupShader(shader);
495}
496
497static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
498        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
499    renderer->setupColorFilter(filter);
500}
501
502static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
503        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
504    renderer->setupShadow(radius, dx, dy, color);
505}
506
507// ----------------------------------------------------------------------------
508// Draw filters
509// ----------------------------------------------------------------------------
510
511static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
512        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
513    renderer->setupPaintFilter(clearBits, setBits);
514}
515
516static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
517        OpenGLRenderer* renderer) {
518    renderer->resetPaintFilter();
519}
520
521// ----------------------------------------------------------------------------
522// Text
523// ----------------------------------------------------------------------------
524
525static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
526        jfloat x, jfloat y, int flags, SkPaint* paint) {
527    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
528            text, 0, count, count, flags);
529    if (value == NULL) {
530        return;
531    }
532    const jchar* glyphs = value->getGlyphs();
533    size_t glyphsCount = value->getGlyphsCount();
534    jfloat totalAdvance = value->getTotalAdvance();
535    const float* positions = value->getPos();
536    int bytesCount = glyphsCount * sizeof(jchar);
537    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y,
538            positions, paint, totalAdvance);
539}
540
541static void renderTextOnPath(OpenGLRenderer* renderer, const jchar* text, int count,
542        SkPath* path, jfloat hOffset, jfloat vOffset, int flags, SkPaint* paint) {
543    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
544            text, 0, count, count, flags);
545    if (value == NULL) {
546        return;
547    }
548    const jchar* glyphs = value->getGlyphs();
549    size_t glyphsCount = value->getGlyphsCount();
550    int bytesCount = glyphsCount * sizeof(jchar);
551    renderer->drawTextOnPath((const char*) glyphs, bytesCount, glyphsCount, path,
552            hOffset, vOffset, paint);
553}
554
555static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
556        jint start, jint count, jint contextCount, jfloat x, jfloat y,
557        int flags, SkPaint* paint) {
558    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
559            text, start, count, contextCount, flags);
560    if (value == NULL) {
561        return;
562    }
563    const jchar* glyphs = value->getGlyphs();
564    size_t glyphsCount = value->getGlyphsCount();
565    jfloat totalAdvance = value->getTotalAdvance();
566    const float* positions = value->getPos();
567    int bytesCount = glyphsCount * sizeof(jchar);
568    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y,
569            positions, paint, totalAdvance);
570}
571
572static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
573        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
574        jfloat x, jfloat y, jint flags, SkPaint* paint) {
575    jchar* textArray = env->GetCharArrayElements(text, NULL);
576    renderText(renderer, textArray + index, count, x, y, flags, paint);
577    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
578}
579
580static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
581        OpenGLRenderer* renderer, jstring text, jint start, jint end,
582        jfloat x, jfloat y, jint flags, SkPaint* paint) {
583    const jchar* textArray = env->GetStringChars(text, NULL);
584    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
585    env->ReleaseStringChars(text, textArray);
586}
587
588static void android_view_GLES20Canvas_drawTextArrayOnPath(JNIEnv* env, jobject clazz,
589        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
590        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
591    jchar* textArray = env->GetCharArrayElements(text, NULL);
592    renderTextOnPath(renderer, textArray + index, count, path,
593            hOffset, vOffset, flags, paint);
594    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
595}
596
597static void android_view_GLES20Canvas_drawTextOnPath(JNIEnv* env, jobject clazz,
598        OpenGLRenderer* renderer, jstring text, jint start, jint end,
599        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
600    const jchar* textArray = env->GetStringChars(text, NULL);
601    renderTextOnPath(renderer, textArray + start, end - start, path,
602            hOffset, vOffset, flags, paint);
603    env->ReleaseStringChars(text, textArray);
604}
605
606static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
607        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
608        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
609        SkPaint* paint) {
610    jchar* textArray = env->GetCharArrayElements(text, NULL);
611    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
612            count, contextCount, x, y, dirFlags, paint);
613    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
614 }
615
616static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
617        OpenGLRenderer* renderer, jstring text, jint start, jint end,
618        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
619        SkPaint* paint) {
620    const jchar* textArray = env->GetStringChars(text, NULL);
621    jint count = end - start;
622    jint contextCount = contextEnd - contextStart;
623    renderTextRun(renderer, textArray + contextStart, start - contextStart,
624            count, contextCount, x, y, dirFlags, paint);
625    env->ReleaseStringChars(text, textArray);
626}
627
628static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
629        const jfloat* positions, jint dirFlags, SkPaint* paint) {
630    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
631            text, 0, count, count, dirFlags);
632    if (value == NULL) {
633        return;
634    }
635    const jchar* glyphs = value->getGlyphs();
636    size_t glyphsCount = value->getGlyphsCount();
637    if (count < int(glyphsCount)) glyphsCount = count;
638    int bytesCount = glyphsCount * sizeof(jchar);
639
640    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
641}
642
643static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
644        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
645        jfloatArray pos, SkPaint* paint) {
646    jchar* textArray = env->GetCharArrayElements(text, NULL);
647    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
648
649    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
650
651    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
652    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
653}
654
655static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
656        OpenGLRenderer* renderer, jstring text, jint start, jint end,
657        jfloatArray pos, SkPaint* paint) {
658    const jchar* textArray = env->GetStringChars(text, NULL);
659    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
660
661    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
662
663    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
664    env->ReleaseStringChars(text, textArray);
665}
666
667// ----------------------------------------------------------------------------
668// Display lists
669// ----------------------------------------------------------------------------
670
671static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
672        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
673    return renderer->getDisplayList(displayList);
674}
675
676static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
677        jobject clazz, DisplayList* displayList) {
678    return displayList->getSize();
679}
680
681static void android_view_GLES20Canvas_setDisplayListName(JNIEnv* env,
682        jobject clazz, DisplayList* displayList, jstring name) {
683    if (name != NULL) {
684        const char* textArray = env->GetStringUTFChars(name, NULL);
685        displayList->setName(textArray);
686        env->ReleaseStringUTFChars(name, textArray);
687    }
688}
689
690static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
691        jobject clazz) {
692    return new DisplayListRenderer;
693}
694
695static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
696        jobject clazz, DisplayListRenderer* renderer) {
697    renderer->reset();
698}
699
700static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
701        jobject clazz, DisplayList* displayList) {
702    DisplayList::destroyDisplayListDeferred(displayList);
703}
704
705static jint android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
706        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
707        jobject dirty, jint flags) {
708    android::uirenderer::Rect bounds;
709    status_t status = renderer->drawDisplayList(displayList, bounds, flags);
710    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
711        env->CallVoidMethod(dirty, gRectClassInfo.set,
712                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
713    }
714    return status;
715}
716
717static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
718        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
719    renderer->outputDisplayList(displayList);
720}
721
722// ----------------------------------------------------------------------------
723// Layers
724// ----------------------------------------------------------------------------
725
726static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
727        OpenGLRenderer* renderer) {
728    renderer->interrupt();
729}
730
731static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
732        OpenGLRenderer* renderer) {
733    renderer->resume();
734}
735
736static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
737        jobject clazz, Layer* layer) {
738    if (layer) {
739        OpenGLRenderer* renderer = new LayerRenderer(layer);
740        renderer->initProperties();
741        return renderer;
742    }
743    return NULL;
744}
745
746static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
747        jboolean isOpaque, jintArray layerInfo) {
748    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
749
750    if (layer) {
751        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
752        storage[0] = layer->getTexture();
753        env->ReleaseIntArrayElements(layerInfo, storage, 0);
754    }
755
756    return layer;
757}
758
759static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
760        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
761    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
762
763    if (layer) {
764        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
765        storage[0] = layer->getWidth();
766        storage[1] = layer->getHeight();
767        env->ReleaseIntArrayElements(layerInfo, storage, 0);
768    }
769
770    return layer;
771}
772
773static bool android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
774        Layer* layer, jint width, jint height, jintArray layerInfo) {
775    if (LayerRenderer::resizeLayer(layer, width, height)) {
776        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
777        storage[0] = layer->getWidth();
778        storage[1] = layer->getHeight();
779        env->ReleaseIntArrayElements(layerInfo, storage, 0);
780        return true;
781    }
782    return false;
783}
784
785static void android_view_GLES20Canvas_setLayerPaint(JNIEnv* env, jobject clazz,
786        Layer* layer, SkPaint* paint) {
787    if (layer) {
788        layer->setPaint(paint);
789    }
790}
791
792static void android_view_GLES20Canvas_setLayerColorFilter(JNIEnv* env, jobject clazz,
793        Layer* layer, SkiaColorFilter* colorFilter) {
794    if (layer) {
795        layer->setColorFilter(colorFilter);
796    }
797}
798
799static void android_view_GLES20Canvas_setOpaqueLayer(JNIEnv* env, jobject clazz,
800        Layer* layer, jboolean isOpaque) {
801    if (layer) {
802        layer->setBlend(!isOpaque);
803    }
804}
805
806static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
807        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
808    float transform[16];
809    sp<GLConsumer> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
810
811    if (surfaceTexture->updateTexImage() == NO_ERROR) {
812        surfaceTexture->getTransformMatrix(transform);
813        GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
814
815        LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
816    }
817}
818
819static void android_view_GLES20Canvas_updateRenderLayer(JNIEnv* env, jobject clazz,
820        Layer* layer, OpenGLRenderer* renderer, DisplayList* displayList,
821        jint left, jint top, jint right, jint bottom) {
822    layer->updateDeferred(renderer, displayList, left, top, right, bottom);
823}
824
825static void android_view_GLES20Canvas_clearLayerTexture(JNIEnv* env, jobject clazz,
826        Layer* layer) {
827    layer->clearTexture();
828}
829
830static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
831        Layer* layer, SkMatrix* matrix) {
832    layer->getTransform().load(*matrix);
833}
834
835static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
836    LayerRenderer::destroyLayer(layer);
837}
838
839static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
840        jobject clazz, Layer* layer) {
841    LayerRenderer::destroyLayerDeferred(layer);
842}
843
844static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
845        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
846    renderer->drawLayer(layer, x, y, paint);
847}
848
849static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
850        Layer* layer, SkBitmap* bitmap) {
851    return LayerRenderer::copyLayer(layer, bitmap);
852}
853
854static void android_view_GLES20Canvas_pushLayerUpdate(JNIEnv* env, jobject clazz,
855        OpenGLRenderer* renderer, Layer* layer) {
856    renderer->pushLayerUpdate(layer);
857}
858
859static void android_view_GLES20Canvas_clearLayerUpdates(JNIEnv* env, jobject clazz,
860        OpenGLRenderer* renderer) {
861    renderer->clearLayerUpdates();
862}
863
864#endif // USE_OPENGL_RENDERER
865
866// ----------------------------------------------------------------------------
867// Common
868// ----------------------------------------------------------------------------
869
870static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
871#ifdef USE_OPENGL_RENDERER
872    char prop[PROPERTY_VALUE_MAX];
873    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
874        // not in the emulator
875        return JNI_TRUE;
876    }
877    // In the emulator this property will be set to 1 when hardware GLES is
878    // enabled, 0 otherwise. On old emulator versions it will be undefined.
879    property_get("ro.kernel.qemu.gles", prop, "0");
880    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
881#else
882    return JNI_FALSE;
883#endif
884}
885
886// ----------------------------------------------------------------------------
887// Logging
888// ----------------------------------------------------------------------------
889
890static void
891android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
892#ifdef USE_OPENGL_RENDERER
893    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
894    android::uirenderer::DisplayList::outputLogBuffer(fd);
895#endif // USE_OPENGL_RENDERER
896}
897
898// ----------------------------------------------------------------------------
899// JNI Glue
900// ----------------------------------------------------------------------------
901
902const char* const kClassPathName = "android/view/GLES20Canvas";
903
904static JNINativeMethod gMethods[] = {
905    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
906
907#ifdef USE_OPENGL_RENDERER
908    { "nFlushCaches",       "(I)V",            (void*) android_view_GLES20Canvas_flushCaches },
909    { "nInitCaches",        "()V",             (void*) android_view_GLES20Canvas_initCaches },
910    { "nTerminateCaches",   "()V",             (void*) android_view_GLES20Canvas_terminateCaches },
911
912    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
913    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
914    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
915    { "nPrepare",           "(IZ)I",           (void*) android_view_GLES20Canvas_prepare },
916    { "nPrepareDirty",      "(IIIIIZ)I",       (void*) android_view_GLES20Canvas_prepareDirty },
917    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
918
919    { "nGetStencilSize",    "()I",             (void*) android_view_GLES20Canvas_getStencilSize },
920
921    { "nCallDrawGLFunction", "(II)I",          (void*) android_view_GLES20Canvas_callDrawGLFunction },
922    { "nDetachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_detachFunctor },
923    { "nAttachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_attachFunctor },
924    { "nInvokeFunctors",     "(ILandroid/graphics/Rect;)I",
925            (void*) android_view_GLES20Canvas_invokeFunctors },
926
927    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
928    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
929    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
930    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
931
932    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
933    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
934    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
935    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
936
937    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
938    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
939    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
940
941    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
942    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
943    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
944    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
945
946    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
947    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
948    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
949
950    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
951    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
952    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
953    { "nDrawBitmap",        "(I[IIIFFIIZI)V",  (void*) android_view_GLES20Canvas_drawBitmapData },
954
955    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
956
957    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
958
959    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
960    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
961    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
962    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
963    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
964    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
965    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
966    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
967
968    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
969    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
970
971    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
972    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
973    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
974    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
975
976    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
977    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
978
979    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
980    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
981            (void*) android_view_GLES20Canvas_drawText },
982
983    { "nDrawTextOnPath",    "(I[CIIIFFII)V",   (void*) android_view_GLES20Canvas_drawTextArrayOnPath },
984    { "nDrawTextOnPath",    "(ILjava/lang/String;IIIFFII)V",
985            (void*) android_view_GLES20Canvas_drawTextOnPath },
986
987    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
988    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
989            (void*) android_view_GLES20Canvas_drawTextRun },
990
991    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
992    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
993            (void*) android_view_GLES20Canvas_drawPosText },
994
995    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
996            (void*) android_view_GLES20Canvas_getClipBounds },
997
998    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
999    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
1000    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
1001    { "nSetDisplayListName",     "(ILjava/lang/String;)V",
1002            (void*) android_view_GLES20Canvas_setDisplayListName },
1003    { "nDrawDisplayList",        "(IILandroid/graphics/Rect;I)I",
1004            (void*) android_view_GLES20Canvas_drawDisplayList },
1005
1006    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
1007    { "nResetDisplayListRenderer",  "(I)V",    (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
1008
1009    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
1010    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
1011    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
1012
1013    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
1014    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
1015    { "nResizeLayer",            "(III[I)Z" ,  (void*) android_view_GLES20Canvas_resizeLayer },
1016    { "nSetLayerPaint",          "(II)V",      (void*) android_view_GLES20Canvas_setLayerPaint },
1017    { "nSetLayerColorFilter",    "(II)V",      (void*) android_view_GLES20Canvas_setLayerColorFilter },
1018    { "nSetOpaqueLayer",         "(IZ)V",      (void*) android_view_GLES20Canvas_setOpaqueLayer },
1019    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
1020    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
1021            (void*) android_view_GLES20Canvas_updateTextureLayer },
1022    { "nUpdateRenderLayer",      "(IIIIIII)V", (void*) android_view_GLES20Canvas_updateRenderLayer },
1023    { "nClearLayerTexture",      "(I)V",       (void*) android_view_GLES20Canvas_clearLayerTexture },
1024    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
1025    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
1026    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
1027    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
1028    { "nClearLayerUpdates",      "(I)V",       (void*) android_view_GLES20Canvas_clearLayerUpdates },
1029    { "nPushLayerUpdate",        "(II)V",      (void*) android_view_GLES20Canvas_pushLayerUpdate },
1030
1031    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
1032
1033    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
1034    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
1035
1036#endif
1037};
1038
1039static JNINativeMethod gActivityThreadMethods[] = {
1040    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
1041                                               (void*) android_app_ActivityThread_dumpGraphics }
1042};
1043
1044
1045#ifdef USE_OPENGL_RENDERER
1046    #define FIND_CLASS(var, className) \
1047            var = env->FindClass(className); \
1048            LOG_FATAL_IF(! var, "Unable to find class " className);
1049
1050    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
1051            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
1052            LOG_FATAL_IF(! var, "Unable to find method " methodName);
1053#else
1054    #define FIND_CLASS(var, className)
1055    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
1056#endif
1057
1058int register_android_view_GLES20Canvas(JNIEnv* env) {
1059    jclass clazz;
1060    FIND_CLASS(clazz, "android/graphics/Rect");
1061    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
1062
1063    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
1064}
1065
1066const char* const kActivityThreadPathName = "android/app/ActivityThread";
1067
1068int register_android_app_ActivityThread(JNIEnv* env) {
1069    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
1070            gActivityThreadMethods, NELEM(gActivityThreadMethods));
1071}
1072
1073};
1074