android_view_GLES20Canvas.cpp revision 49cc5d71192cbd776e237488218aea18a3ed14b1 
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 "jni.h"
20#include "GraphicsJNI.h"
21#include <nativehelper/JNIHelp.h>
22
23#include "android_view_GraphicBuffer.h"
24
25#include <android_runtime/AndroidRuntime.h>
26#include <android_runtime/android_graphics_SurfaceTexture.h>
27
28#include <androidfw/ResourceTypes.h>
29
30#include <gui/GLConsumer.h>
31
32#include <private/hwui/DrawGlInfo.h>
33
34#include <cutils/properties.h>
35
36#include <SkBitmap.h>
37#include <SkCanvas.h>
38#include <SkMatrix.h>
39#include <SkPaint.h>
40#include <SkRegion.h>
41#include <SkScalerContext.h>
42#include <SkTemplates.h>
43#include <SkXfermode.h>
44
45#include <DisplayList.h>
46#include <DisplayListRenderer.h>
47#include <LayerRenderer.h>
48#include <OpenGLRenderer.h>
49#include <SkiaShader.h>
50#include <SkiaColorFilter.h>
51#include <Stencil.h>
52#include <Rect.h>
53
54#include <TextLayout.h>
55#include <TextLayoutCache.h>
56
57namespace android {
58
59using namespace uirenderer;
60
61/**
62 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
63 *       devices. This means all the logic must be compiled only when the
64 *       preprocessor variable USE_OPENGL_RENDERER is defined.
65 */
66#ifdef USE_OPENGL_RENDERER
67
68// ----------------------------------------------------------------------------
69// Defines
70// ----------------------------------------------------------------------------
71
72// Debug
73#define DEBUG_RENDERER 0
74
75// Debug
76#if DEBUG_RENDERER
77    #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
78#else
79    #define RENDERER_LOGD(...)
80#endif
81
82#define MODIFIER_SHADOW 1
83#define MODIFIER_SHADER 2
84#define MODIFIER_COLOR_FILTER 4
85
86// ----------------------------------------------------------------------------
87
88static struct {
89    jmethodID set;
90} gRectClassInfo;
91
92// ----------------------------------------------------------------------------
93// Caching
94// ----------------------------------------------------------------------------
95
96static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
97        Caches::FlushMode mode) {
98    if (Caches::hasInstance()) {
99        Caches::getInstance().flush(mode);
100    }
101}
102
103static bool android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
104    if (Caches::hasInstance()) {
105        return Caches::getInstance().init();
106    }
107    return false;
108}
109
110static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
111    if (Caches::hasInstance()) {
112        Caches::getInstance().terminate();
113    }
114}
115
116// ----------------------------------------------------------------------------
117// Caching
118// ----------------------------------------------------------------------------
119
120static void android_view_GLES20Canvas_initAtlas(JNIEnv* env, jobject clazz,
121        jobject graphicBuffer, jintArray atlasMapArray, jint count) {
122
123    sp<GraphicBuffer> buffer = graphicBufferForJavaObject(env, graphicBuffer);
124    jint* atlasMap = env->GetIntArrayElements(atlasMapArray, NULL);
125
126    Caches::getInstance().assetAtlas.init(buffer, atlasMap, count);
127
128    env->ReleaseIntArrayElements(atlasMapArray, atlasMap, 0);
129}
130
131// ----------------------------------------------------------------------------
132// Constructors
133// ----------------------------------------------------------------------------
134
135static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
136    RENDERER_LOGD("Create OpenGLRenderer");
137    OpenGLRenderer* renderer = new OpenGLRenderer();
138    renderer->initProperties();
139    return renderer;
140}
141
142static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
143        OpenGLRenderer* renderer) {
144    RENDERER_LOGD("Destroy OpenGLRenderer");
145    delete renderer;
146}
147
148// ----------------------------------------------------------------------------
149// Setup
150// ----------------------------------------------------------------------------
151
152static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
153        OpenGLRenderer* renderer, jint width, jint height) {
154    renderer->setViewport(width, height);
155}
156
157static int android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
158        OpenGLRenderer* renderer, jboolean opaque) {
159    return renderer->prepare(opaque);
160}
161
162static int android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
163        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
164        jboolean opaque) {
165    return renderer->prepareDirty(left, top, right, bottom, opaque);
166}
167
168static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
169        OpenGLRenderer* renderer) {
170    renderer->finish();
171}
172
173static jint android_view_GLES20Canvas_getStencilSize(JNIEnv* env, jobject clazz) {
174    return Stencil::getStencilSize();
175}
176
177static void android_view_GLES20Canvas_setName(JNIEnv* env,
178        jobject clazz, OpenGLRenderer* renderer, jstring name) {
179    if (name != NULL) {
180        const char* textArray = env->GetStringUTFChars(name, NULL);
181        renderer->setName(textArray);
182        env->ReleaseStringUTFChars(name, textArray);
183    } else {
184        renderer->setName(NULL);
185    }
186}
187
188static void android_view_GLES20Canvas_setCountOverdrawEnabled(JNIEnv* env, jobject clazz,
189        OpenGLRenderer* renderer, jboolean enabled) {
190    renderer->setCountOverdrawEnabled(enabled);
191}
192
193static jfloat android_view_GLES20Canvas_getOverdraw(JNIEnv* env, jobject clazz,
194        OpenGLRenderer* renderer) {
195    return renderer->getOverdraw();
196}
197
198// ----------------------------------------------------------------------------
199// Functor
200// ----------------------------------------------------------------------------
201
202static jint android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
203        OpenGLRenderer* renderer, Functor* functor) {
204    android::uirenderer::Rect dirty;
205    return renderer->callDrawGLFunction(functor, dirty);
206}
207
208static void android_view_GLES20Canvas_detachFunctor(JNIEnv* env,
209        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
210    renderer->detachFunctor(functor);
211}
212
213static void android_view_GLES20Canvas_attachFunctor(JNIEnv* env,
214        jobject clazz, OpenGLRenderer* renderer, Functor* functor) {
215    renderer->attachFunctor(functor);
216}
217
218static jint android_view_GLES20Canvas_invokeFunctors(JNIEnv* env,
219        jobject clazz, OpenGLRenderer* renderer, jobject dirty) {
220    android::uirenderer::Rect bounds;
221    status_t status = renderer->invokeFunctors(bounds);
222    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
223        env->CallVoidMethod(dirty, gRectClassInfo.set,
224                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
225    }
226    return status;
227}
228
229// ----------------------------------------------------------------------------
230// Misc
231// ----------------------------------------------------------------------------
232
233static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
234    return Caches::getInstance().maxTextureSize;
235}
236
237static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
238    return Caches::getInstance().maxTextureSize;
239}
240
241// ----------------------------------------------------------------------------
242// State
243// ----------------------------------------------------------------------------
244
245static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
246        jint flags) {
247    return renderer->save(flags);
248}
249
250static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
251        OpenGLRenderer* renderer) {
252    return renderer->getSaveCount();
253}
254
255static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
256        OpenGLRenderer* renderer) {
257    renderer->restore();
258}
259
260static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
261        OpenGLRenderer* renderer, jint saveCount) {
262    renderer->restoreToCount(saveCount);
263}
264
265// ----------------------------------------------------------------------------
266// Layers
267// ----------------------------------------------------------------------------
268
269static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
270        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
271        SkPaint* paint, jint saveFlags) {
272    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
273}
274
275static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
276        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
277    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
278    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
279            paint, saveFlags);
280}
281
282static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
283        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
284        jint alpha, jint saveFlags) {
285    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
286}
287
288static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
289        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
290    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
291    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
292            alpha, saveFlags);
293}
294
295// ----------------------------------------------------------------------------
296// Clipping
297// ----------------------------------------------------------------------------
298
299static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
300        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom) {
301    return renderer->quickRejectNoScissor(left, top, right, bottom);
302}
303
304static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
305        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
306        SkRegion::Op op) {
307    return renderer->clipRect(left, top, right, bottom, op);
308}
309
310static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
311        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
312        SkRegion::Op op) {
313    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
314}
315
316static bool android_view_GLES20Canvas_clipPath(JNIEnv* env, jobject clazz,
317        OpenGLRenderer* renderer, SkPath* path, SkRegion::Op op) {
318    return renderer->clipPath(path, op);
319}
320
321static bool android_view_GLES20Canvas_clipRegion(JNIEnv* env, jobject clazz,
322        OpenGLRenderer* renderer, SkRegion* region, SkRegion::Op op) {
323    return renderer->clipRegion(region, op);
324}
325
326static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
327        OpenGLRenderer* renderer, jobject rect) {
328    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
329
330    env->CallVoidMethod(rect, gRectClassInfo.set,
331            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
332
333    return !bounds.isEmpty();
334}
335
336// ----------------------------------------------------------------------------
337// Transforms
338// ----------------------------------------------------------------------------
339
340static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
341        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
342    renderer->translate(dx, dy);
343}
344
345static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
346        OpenGLRenderer* renderer, jfloat degrees) {
347    renderer->rotate(degrees);
348}
349
350static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
351        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
352    renderer->scale(sx, sy);
353}
354
355static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
356        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
357    renderer->skew(sx, sy);
358}
359
360static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
361        OpenGLRenderer* renderer, SkMatrix* matrix) {
362    renderer->setMatrix(matrix);
363}
364
365static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
366        OpenGLRenderer* renderer, SkMatrix* matrix) {
367    renderer->getMatrix(matrix);
368}
369
370static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
371        OpenGLRenderer* renderer, SkMatrix* matrix) {
372    renderer->concatMatrix(matrix);
373}
374
375// ----------------------------------------------------------------------------
376// Drawing
377// ----------------------------------------------------------------------------
378
379static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
380        OpenGLRenderer* renderer, SkBitmap* bitmap, jfloat left, jfloat top, SkPaint* paint) {
381    renderer->drawBitmap(bitmap, left, top, paint);
382}
383
384static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
385        OpenGLRenderer* renderer, SkBitmap* bitmap,
386        float srcLeft, float srcTop, float srcRight, float srcBottom,
387        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
388    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
389            dstLeft, dstTop, dstRight, dstBottom, paint);
390}
391
392static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
393        OpenGLRenderer* renderer, SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint) {
394    renderer->drawBitmap(bitmap, matrix, paint);
395}
396
397static void android_view_GLES20Canvas_drawBitmapData(JNIEnv* env, jobject clazz,
398        OpenGLRenderer* renderer, jintArray colors, jint offset, jint stride,
399        jfloat left, jfloat top, jint width, jint height, jboolean hasAlpha, SkPaint* paint) {
400    SkBitmap* bitmap = new SkBitmap;
401    bitmap->setConfig(hasAlpha ? SkBitmap::kARGB_8888_Config : SkBitmap::kRGB_565_Config,
402            width, height);
403
404    if (!bitmap->allocPixels()) {
405        delete bitmap;
406        return;
407    }
408
409    if (!GraphicsJNI::SetPixels(env, colors, offset, stride, 0, 0, width, height, *bitmap)) {
410        delete bitmap;
411        return;
412    }
413
414    renderer->drawBitmapData(bitmap, left, top, paint);
415
416    // If the renderer is a deferred renderer it will own the bitmap
417    if (!renderer->isDeferred()) {
418        delete bitmap;
419    }
420}
421
422static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
423        OpenGLRenderer* renderer, SkBitmap* bitmap, jint meshWidth, jint meshHeight,
424         jfloatArray vertices, jint offset, jintArray colors, jint colorOffset, SkPaint* paint) {
425    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
426    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
427
428    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
429
430    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
431    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
432}
433
434static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
435        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray chunks,
436        float left, float top, float right, float bottom, SkPaint* paint) {
437    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
438    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
439    Res_png_9patch::deserialize(patch);
440
441    renderer->drawPatch(bitmap, patch, left, top, right, bottom, paint);
442
443    env->ReleaseByteArrayElements(chunks, storage, 0);
444}
445
446static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
447        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
448    renderer->drawColor(color, mode);
449}
450
451static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
452        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
453        SkPaint* paint) {
454    renderer->drawRect(left, top, right, bottom, paint);
455}
456
457static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
458        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
459        jfloat rx, jfloat ry, SkPaint* paint) {
460    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
461}
462
463static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
464        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
465    renderer->drawCircle(x, y, radius, paint);
466}
467
468static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
469        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
470        SkPaint* paint) {
471    renderer->drawOval(left, top, right, bottom, paint);
472}
473
474static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
475        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
476        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
477    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
478}
479
480static void android_view_GLES20Canvas_drawRegionAsRects(JNIEnv* env, jobject clazz,
481        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
482    if (paint->getStyle() != SkPaint::kFill_Style ||
483            (paint->isAntiAlias() && !renderer->isCurrentTransformSimple())) {
484        SkRegion::Iterator it(*region);
485        while (!it.done()) {
486            const SkIRect& r = it.rect();
487            renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
488            it.next();
489        }
490    } else {
491        int count = 0;
492        Vector<float> rects;
493        SkRegion::Iterator it(*region);
494        while (!it.done()) {
495            const SkIRect& r = it.rect();
496            rects.push(r.fLeft);
497            rects.push(r.fTop);
498            rects.push(r.fRight);
499            rects.push(r.fBottom);
500            count += 4;
501            it.next();
502        }
503        renderer->drawRects(rects.array(), count, paint);
504    }
505}
506
507static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
508        OpenGLRenderer* renderer, jfloatArray rects, jint count, SkPaint* paint) {
509    jfloat* storage = env->GetFloatArrayElements(rects, NULL);
510    renderer->drawRects(storage, count, paint);
511    env->ReleaseFloatArrayElements(rects, storage, 0);
512}
513
514static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
515        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
516    jfloat* storage = env->GetFloatArrayElements(points, NULL);
517    renderer->drawPoints(storage + offset, count, paint);
518    env->ReleaseFloatArrayElements(points, storage, 0);
519}
520
521static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
522        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
523    renderer->drawPath(path, paint);
524}
525
526static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
527        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
528    jfloat* storage = env->GetFloatArrayElements(points, NULL);
529    renderer->drawLines(storage + offset, count, paint);
530    env->ReleaseFloatArrayElements(points, storage, 0);
531}
532
533// ----------------------------------------------------------------------------
534// Shaders and color filters
535// ----------------------------------------------------------------------------
536
537static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
538        OpenGLRenderer* renderer, jint modifiers) {
539    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
540    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
541    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
542}
543
544static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
545        OpenGLRenderer* renderer, SkiaShader* shader) {
546    renderer->setupShader(shader);
547}
548
549static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
550        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
551    renderer->setupColorFilter(filter);
552}
553
554static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
555        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
556    renderer->setupShadow(radius, dx, dy, color);
557}
558
559// ----------------------------------------------------------------------------
560// Draw filters
561// ----------------------------------------------------------------------------
562
563static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
564        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
565    renderer->setupPaintFilter(clearBits, setBits);
566}
567
568static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
569        OpenGLRenderer* renderer) {
570    renderer->resetPaintFilter();
571}
572
573// ----------------------------------------------------------------------------
574// Text
575// ----------------------------------------------------------------------------
576
577static float xOffsetForTextAlign(SkPaint* paint, float totalAdvance) {
578    switch (paint->getTextAlign()) {
579        case SkPaint::kCenter_Align:
580            return -totalAdvance / 2.0f;
581            break;
582        case SkPaint::kRight_Align:
583            return -totalAdvance;
584            break;
585        default:
586            break;
587    }
588    return 0;
589}
590
591static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
592        jfloat x, jfloat y, int flags, SkPaint* paint) {
593    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
594            text, 0, count, count, flags);
595    if (value == NULL) {
596        return;
597    }
598    const jchar* glyphs = value->getGlyphs();
599    size_t glyphsCount = value->getGlyphsCount();
600    jfloat totalAdvance = value->getTotalAdvance();
601    const float* positions = value->getPos();
602    int bytesCount = glyphsCount * sizeof(jchar);
603    const SkRect& r = value->getBounds();
604    android::uirenderer::Rect bounds(r.fLeft, r.fTop, r.fRight, r.fBottom);
605    bounds.translate(x, y);
606
607    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount,
608            x + xOffsetForTextAlign(paint, totalAdvance), y, positions,
609            paint, totalAdvance, bounds);
610}
611
612static void renderTextOnPath(OpenGLRenderer* renderer, const jchar* text, int count,
613        SkPath* path, jfloat hOffset, jfloat vOffset, int flags, SkPaint* paint) {
614    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
615            text, 0, count, count, flags);
616    if (value == NULL) {
617        return;
618    }
619    const jchar* glyphs = value->getGlyphs();
620    size_t glyphsCount = value->getGlyphsCount();
621    int bytesCount = glyphsCount * sizeof(jchar);
622    renderer->drawTextOnPath((const char*) glyphs, bytesCount, glyphsCount, path,
623            hOffset, vOffset, paint);
624}
625
626static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
627        jint start, jint count, jint contextCount, jfloat x, jfloat y,
628        int flags, SkPaint* paint) {
629    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
630            text, start, count, contextCount, flags);
631    if (value == NULL) {
632        return;
633    }
634    const jchar* glyphs = value->getGlyphs();
635    size_t glyphsCount = value->getGlyphsCount();
636    jfloat totalAdvance = value->getTotalAdvance();
637    const float* positions = value->getPos();
638    int bytesCount = glyphsCount * sizeof(jchar);
639    const SkRect& r = value->getBounds();
640    android::uirenderer::Rect bounds(r.fLeft, r.fTop, r.fRight, r.fBottom);
641    bounds.translate(x, y);
642
643    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount,
644            x + xOffsetForTextAlign(paint, totalAdvance), y, positions,
645            paint, totalAdvance, bounds);
646}
647
648static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
649        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
650        jfloat x, jfloat y, jint flags, SkPaint* paint) {
651    jchar* textArray = env->GetCharArrayElements(text, NULL);
652    renderText(renderer, textArray + index, count, x, y, flags, paint);
653    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
654}
655
656static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
657        OpenGLRenderer* renderer, jstring text, jint start, jint end,
658        jfloat x, jfloat y, jint flags, SkPaint* paint) {
659    const jchar* textArray = env->GetStringChars(text, NULL);
660    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
661    env->ReleaseStringChars(text, textArray);
662}
663
664static void android_view_GLES20Canvas_drawTextArrayOnPath(JNIEnv* env, jobject clazz,
665        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
666        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
667    jchar* textArray = env->GetCharArrayElements(text, NULL);
668    renderTextOnPath(renderer, textArray + index, count, path,
669            hOffset, vOffset, flags, paint);
670    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
671}
672
673static void android_view_GLES20Canvas_drawTextOnPath(JNIEnv* env, jobject clazz,
674        OpenGLRenderer* renderer, jstring text, jint start, jint end,
675        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
676    const jchar* textArray = env->GetStringChars(text, NULL);
677    renderTextOnPath(renderer, textArray + start, end - start, path,
678            hOffset, vOffset, flags, paint);
679    env->ReleaseStringChars(text, textArray);
680}
681
682static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
683        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
684        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
685        SkPaint* paint) {
686    jchar* textArray = env->GetCharArrayElements(text, NULL);
687    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
688            count, contextCount, x, y, dirFlags, paint);
689    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
690 }
691
692static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
693        OpenGLRenderer* renderer, jstring text, jint start, jint end,
694        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
695        SkPaint* paint) {
696    const jchar* textArray = env->GetStringChars(text, NULL);
697    jint count = end - start;
698    jint contextCount = contextEnd - contextStart;
699    renderTextRun(renderer, textArray + contextStart, start - contextStart,
700            count, contextCount, x, y, dirFlags, paint);
701    env->ReleaseStringChars(text, textArray);
702}
703
704static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
705        const jfloat* positions, jint dirFlags, SkPaint* paint) {
706    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
707            text, 0, count, count, dirFlags);
708    if (value == NULL) {
709        return;
710    }
711    const jchar* glyphs = value->getGlyphs();
712    size_t glyphsCount = value->getGlyphsCount();
713    if (count < int(glyphsCount)) glyphsCount = count;
714    int bytesCount = glyphsCount * sizeof(jchar);
715
716    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
717}
718
719static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
720        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
721        jfloatArray pos, SkPaint* paint) {
722    jchar* textArray = env->GetCharArrayElements(text, NULL);
723    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
724
725    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
726
727    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
728    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
729}
730
731static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
732        OpenGLRenderer* renderer, jstring text, jint start, jint end,
733        jfloatArray pos, SkPaint* paint) {
734    const jchar* textArray = env->GetStringChars(text, NULL);
735    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
736
737    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
738
739    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
740    env->ReleaseStringChars(text, textArray);
741}
742
743// ----------------------------------------------------------------------------
744// Display lists
745// ----------------------------------------------------------------------------
746
747static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
748        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
749    return renderer->getDisplayList(displayList);
750}
751
752static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
753        jobject clazz) {
754    return new DisplayListRenderer;
755}
756
757static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
758        jobject clazz, DisplayListRenderer* renderer) {
759    renderer->reset();
760}
761
762static jint android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
763        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
764        jobject dirty, jint flags) {
765    android::uirenderer::Rect bounds;
766    status_t status = renderer->drawDisplayList(displayList, bounds, flags);
767    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
768        env->CallVoidMethod(dirty, gRectClassInfo.set,
769                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
770    }
771    return status;
772}
773
774static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
775        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
776    renderer->outputDisplayList(displayList);
777}
778
779// ----------------------------------------------------------------------------
780// Layers
781// ----------------------------------------------------------------------------
782
783static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
784        OpenGLRenderer* renderer) {
785    renderer->interrupt();
786}
787
788static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
789        OpenGLRenderer* renderer) {
790    renderer->resume();
791}
792
793static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
794        jobject clazz, Layer* layer) {
795    if (layer) {
796        OpenGLRenderer* renderer = new LayerRenderer(layer);
797        renderer->initProperties();
798        return renderer;
799    }
800    return NULL;
801}
802
803static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
804        jboolean isOpaque, jintArray layerInfo) {
805    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
806
807    if (layer) {
808        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
809        storage[0] = layer->getTexture();
810        env->ReleaseIntArrayElements(layerInfo, storage, 0);
811    }
812
813    return layer;
814}
815
816static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
817        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
818    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
819
820    if (layer) {
821        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
822        storage[0] = layer->getWidth();
823        storage[1] = layer->getHeight();
824        env->ReleaseIntArrayElements(layerInfo, storage, 0);
825    }
826
827    return layer;
828}
829
830static bool android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
831        Layer* layer, jint width, jint height, jintArray layerInfo) {
832    if (LayerRenderer::resizeLayer(layer, width, height)) {
833        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
834        storage[0] = layer->getWidth();
835        storage[1] = layer->getHeight();
836        env->ReleaseIntArrayElements(layerInfo, storage, 0);
837        return true;
838    }
839    return false;
840}
841
842static void android_view_GLES20Canvas_setLayerPaint(JNIEnv* env, jobject clazz,
843        Layer* layer, SkPaint* paint) {
844    if (layer) {
845        layer->setPaint(paint);
846    }
847}
848
849static void android_view_GLES20Canvas_setLayerColorFilter(JNIEnv* env, jobject clazz,
850        Layer* layer, SkiaColorFilter* colorFilter) {
851    if (layer) {
852        layer->setColorFilter(colorFilter);
853    }
854}
855
856static void android_view_GLES20Canvas_setOpaqueLayer(JNIEnv* env, jobject clazz,
857        Layer* layer, jboolean isOpaque) {
858    if (layer) {
859        layer->setBlend(!isOpaque);
860    }
861}
862
863static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
864        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
865    float transform[16];
866    sp<GLConsumer> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
867
868    if (surfaceTexture->updateTexImage() == NO_ERROR) {
869        surfaceTexture->getTransformMatrix(transform);
870        GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
871
872        LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
873    }
874}
875
876static void android_view_GLES20Canvas_updateRenderLayer(JNIEnv* env, jobject clazz,
877        Layer* layer, OpenGLRenderer* renderer, DisplayList* displayList,
878        jint left, jint top, jint right, jint bottom) {
879    layer->updateDeferred(renderer, displayList, left, top, right, bottom);
880}
881
882static void android_view_GLES20Canvas_clearLayerTexture(JNIEnv* env, jobject clazz,
883        Layer* layer) {
884    layer->clearTexture();
885}
886
887static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
888        Layer* layer, SkMatrix* matrix) {
889    layer->getTransform().load(*matrix);
890}
891
892static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
893    LayerRenderer::destroyLayer(layer);
894}
895
896static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
897        jobject clazz, Layer* layer) {
898    LayerRenderer::destroyLayerDeferred(layer);
899}
900
901static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
902        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y) {
903    renderer->drawLayer(layer, x, y);
904}
905
906static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
907        Layer* layer, SkBitmap* bitmap) {
908    return LayerRenderer::copyLayer(layer, bitmap);
909}
910
911static void android_view_GLES20Canvas_pushLayerUpdate(JNIEnv* env, jobject clazz,
912        OpenGLRenderer* renderer, Layer* layer) {
913    renderer->pushLayerUpdate(layer);
914}
915
916static void android_view_GLES20Canvas_cancelLayerUpdate(JNIEnv* env, jobject clazz,
917        OpenGLRenderer* renderer, Layer* layer) {
918    renderer->cancelLayerUpdate(layer);
919}
920
921static void android_view_GLES20Canvas_clearLayerUpdates(JNIEnv* env, jobject clazz,
922        OpenGLRenderer* renderer) {
923    renderer->clearLayerUpdates();
924}
925
926static void android_view_GLES20Canvas_flushLayerUpdates(JNIEnv* env, jobject clazz,
927        OpenGLRenderer* renderer) {
928    renderer->flushLayerUpdates();
929}
930
931#endif // USE_OPENGL_RENDERER
932
933// ----------------------------------------------------------------------------
934// Common
935// ----------------------------------------------------------------------------
936
937static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
938#ifdef USE_OPENGL_RENDERER
939    char prop[PROPERTY_VALUE_MAX];
940    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
941        // not in the emulator
942        return JNI_TRUE;
943    }
944    // In the emulator this property will be set to 1 when hardware GLES is
945    // enabled, 0 otherwise. On old emulator versions it will be undefined.
946    property_get("ro.kernel.qemu.gles", prop, "0");
947    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
948#else
949    return JNI_FALSE;
950#endif
951}
952
953// ----------------------------------------------------------------------------
954// Logging
955// ----------------------------------------------------------------------------
956
957static void
958android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
959#ifdef USE_OPENGL_RENDERER
960    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
961    android::uirenderer::DisplayList::outputLogBuffer(fd);
962#endif // USE_OPENGL_RENDERER
963}
964
965// ----------------------------------------------------------------------------
966// JNI Glue
967// ----------------------------------------------------------------------------
968
969const char* const kClassPathName = "android/view/GLES20Canvas";
970
971static JNINativeMethod gMethods[] = {
972    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
973
974#ifdef USE_OPENGL_RENDERER
975    { "nFlushCaches",       "(I)V",            (void*) android_view_GLES20Canvas_flushCaches },
976    { "nInitCaches",        "()Z",             (void*) android_view_GLES20Canvas_initCaches },
977    { "nTerminateCaches",   "()V",             (void*) android_view_GLES20Canvas_terminateCaches },
978
979    { "nInitAtlas",         "(Landroid/view/GraphicBuffer;[II)V",
980            (void*) android_view_GLES20Canvas_initAtlas },
981
982    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
983    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
984    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
985    { "nPrepare",           "(IZ)I",           (void*) android_view_GLES20Canvas_prepare },
986    { "nPrepareDirty",      "(IIIIIZ)I",       (void*) android_view_GLES20Canvas_prepareDirty },
987    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
988    { "nSetName",           "(ILjava/lang/String;)V",
989            (void*) android_view_GLES20Canvas_setName },
990
991    { "nSetCountOverdrawEnabled", "(IZ)V",     (void*) android_view_GLES20Canvas_setCountOverdrawEnabled },
992    { "nGetOverdraw",             "(I)F",      (void*) android_view_GLES20Canvas_getOverdraw },
993
994    { "nGetStencilSize",    "()I",             (void*) android_view_GLES20Canvas_getStencilSize },
995
996    { "nCallDrawGLFunction", "(II)I",          (void*) android_view_GLES20Canvas_callDrawGLFunction },
997    { "nDetachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_detachFunctor },
998    { "nAttachFunctor",      "(II)V",          (void*) android_view_GLES20Canvas_attachFunctor },
999    { "nInvokeFunctors",     "(ILandroid/graphics/Rect;)I",
1000            (void*) android_view_GLES20Canvas_invokeFunctors },
1001
1002    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
1003    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
1004    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
1005    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
1006
1007    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
1008    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
1009    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
1010    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
1011
1012    { "nQuickReject",       "(IFFFF)Z",        (void*) android_view_GLES20Canvas_quickReject },
1013    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
1014    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
1015    { "nClipPath",          "(III)Z",          (void*) android_view_GLES20Canvas_clipPath },
1016    { "nClipRegion",        "(III)Z",          (void*) android_view_GLES20Canvas_clipRegion },
1017
1018    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
1019    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
1020    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
1021    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
1022
1023    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
1024    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
1025    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
1026
1027    { "nDrawBitmap",        "(IIFFI)V",        (void*) android_view_GLES20Canvas_drawBitmap },
1028    { "nDrawBitmap",        "(IIFFFFFFFFI)V",  (void*) android_view_GLES20Canvas_drawBitmapRect },
1029    { "nDrawBitmap",        "(IIII)V",         (void*) android_view_GLES20Canvas_drawBitmapMatrix },
1030    { "nDrawBitmap",        "(I[IIIFFIIZI)V",  (void*) android_view_GLES20Canvas_drawBitmapData },
1031
1032    { "nDrawBitmapMesh",    "(IIII[FI[III)V",  (void*) android_view_GLES20Canvas_drawBitmapMesh },
1033
1034    { "nDrawPatch",         "(II[BFFFFI)V",    (void*) android_view_GLES20Canvas_drawPatch },
1035
1036    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
1037    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
1038    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRegionAsRects },
1039    { "nDrawRects",         "(I[FII)V",        (void*) android_view_GLES20Canvas_drawRects },
1040    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
1041    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
1042    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
1043    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
1044    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
1045
1046    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
1047    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
1048
1049    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
1050    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
1051    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
1052    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
1053
1054    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
1055    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
1056
1057    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
1058    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
1059            (void*) android_view_GLES20Canvas_drawText },
1060
1061    { "nDrawTextOnPath",    "(I[CIIIFFII)V",   (void*) android_view_GLES20Canvas_drawTextArrayOnPath },
1062    { "nDrawTextOnPath",    "(ILjava/lang/String;IIIFFII)V",
1063            (void*) android_view_GLES20Canvas_drawTextOnPath },
1064
1065    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
1066    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
1067            (void*) android_view_GLES20Canvas_drawTextRun },
1068
1069    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
1070    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
1071            (void*) android_view_GLES20Canvas_drawPosText },
1072
1073    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
1074            (void*) android_view_GLES20Canvas_getClipBounds },
1075
1076    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
1077    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
1078    { "nDrawDisplayList",        "(IILandroid/graphics/Rect;I)I",
1079            (void*) android_view_GLES20Canvas_drawDisplayList },
1080
1081    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
1082    { "nResetDisplayListRenderer",  "(I)V",    (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
1083
1084    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
1085    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
1086
1087    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
1088    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
1089    { "nResizeLayer",            "(III[I)Z" ,  (void*) android_view_GLES20Canvas_resizeLayer },
1090    { "nSetLayerPaint",          "(II)V",      (void*) android_view_GLES20Canvas_setLayerPaint },
1091    { "nSetLayerColorFilter",    "(II)V",      (void*) android_view_GLES20Canvas_setLayerColorFilter },
1092    { "nSetOpaqueLayer",         "(IZ)V",      (void*) android_view_GLES20Canvas_setOpaqueLayer },
1093    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
1094    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
1095            (void*) android_view_GLES20Canvas_updateTextureLayer },
1096    { "nUpdateRenderLayer",      "(IIIIIII)V", (void*) android_view_GLES20Canvas_updateRenderLayer },
1097    { "nClearLayerTexture",      "(I)V",       (void*) android_view_GLES20Canvas_clearLayerTexture },
1098    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
1099    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
1100    { "nDrawLayer",              "(IIFF)V",    (void*) android_view_GLES20Canvas_drawLayer },
1101    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
1102    { "nClearLayerUpdates",      "(I)V",       (void*) android_view_GLES20Canvas_clearLayerUpdates },
1103    { "nFlushLayerUpdates",      "(I)V",       (void*) android_view_GLES20Canvas_flushLayerUpdates },
1104    { "nPushLayerUpdate",        "(II)V",      (void*) android_view_GLES20Canvas_pushLayerUpdate },
1105    { "nCancelLayerUpdate",      "(II)V",      (void*) android_view_GLES20Canvas_cancelLayerUpdate },
1106
1107    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
1108
1109    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
1110    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
1111
1112#endif
1113};
1114
1115static JNINativeMethod gActivityThreadMethods[] = {
1116    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
1117                                               (void*) android_app_ActivityThread_dumpGraphics }
1118};
1119
1120
1121#ifdef USE_OPENGL_RENDERER
1122    #define FIND_CLASS(var, className) \
1123            var = env->FindClass(className); \
1124            LOG_FATAL_IF(! var, "Unable to find class " className);
1125
1126    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
1127            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
1128            LOG_FATAL_IF(! var, "Unable to find method " methodName);
1129#else
1130    #define FIND_CLASS(var, className)
1131    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
1132#endif
1133
1134int register_android_view_GLES20Canvas(JNIEnv* env) {
1135    jclass clazz;
1136    FIND_CLASS(clazz, "android/graphics/Rect");
1137    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
1138
1139    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
1140}
1141
1142const char* const kActivityThreadPathName = "android/app/ActivityThread";
1143
1144int register_android_app_ActivityThread(JNIEnv* env) {
1145    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
1146            gActivityThreadMethods, NELEM(gActivityThreadMethods));
1147}
1148
1149};
1150