android_view_GLES20Canvas.cpp revision 807daf7df615b60ce6fc41355aabe3aa353cebab 
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#include <android_runtime/AndroidRuntime.h>
23#include <utils/ResourceTypes.h>
24
25#include <SkBitmap.h>
26#include <SkCanvas.h>
27#include <SkMatrix.h>
28#include <SkPaint.h>
29#include <SkRegion.h>
30#include <SkScalerContext.h>
31#include <SkTemplates.h>
32#include <SkXfermode.h>
33
34#include <DisplayListRenderer.h>
35#include <LayerRenderer.h>
36#include <OpenGLDebugRenderer.h>
37#include <OpenGLRenderer.h>
38#include <SkiaShader.h>
39#include <SkiaColorFilter.h>
40#include <Rect.h>
41
42#include "TextLayout.h"
43
44namespace android {
45
46using namespace uirenderer;
47
48/**
49 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
50 *       devices. This means all the logic must be compiled only when the
51 *       preprocessor variable USE_OPENGL_RENDERER is defined.
52 */
53#ifdef USE_OPENGL_RENDERER
54
55///////////////////////////////////////////////////////////////////////////////
56// Defines
57///////////////////////////////////////////////////////////////////////////////
58
59// Debug
60#define DEBUG_RENDERER 0
61#define PROFILE_RENDERER 0
62
63// Debug
64#if DEBUG_RENDERER
65    #define RENDERER_LOGD(...) LOGD(__VA_ARGS__)
66#else
67    #define RENDERER_LOGD(...)
68#endif
69
70// ----------------------------------------------------------------------------
71
72static struct {
73    jclass clazz;
74    jmethodID set;
75} gRectClassInfo;
76
77// ----------------------------------------------------------------------------
78// Constructors
79// ----------------------------------------------------------------------------
80
81static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
82    RENDERER_LOGD("Create OpenGLRenderer");
83#if PROFILE_RENDERER
84    return new OpenGLDebugRenderer;
85#else
86    return new OpenGLRenderer;
87#endif
88}
89
90static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
91        OpenGLRenderer* renderer) {
92    RENDERER_LOGD("Destroy OpenGLRenderer");
93    delete renderer;
94}
95
96// ----------------------------------------------------------------------------
97// Setup
98// ----------------------------------------------------------------------------
99
100static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject canvas,
101        OpenGLRenderer* renderer, jint width, jint height) {
102    renderer->setViewport(width, height);
103}
104
105static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject canvas,
106        OpenGLRenderer* renderer, jboolean opaque) {
107    renderer->prepare(opaque);
108}
109
110static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject canvas,
111        OpenGLRenderer* renderer) {
112    renderer->finish();
113}
114
115static void android_view_GLES20Canvas_acquireContext(JNIEnv* env, jobject canvas,
116        OpenGLRenderer* renderer) {
117    renderer->acquireContext();
118}
119
120static void android_view_GLES20Canvas_releaseContext(JNIEnv* env, jobject canvas,
121        OpenGLRenderer* renderer) {
122    renderer->releaseContext();
123}
124
125// ----------------------------------------------------------------------------
126// State
127// ----------------------------------------------------------------------------
128
129static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject canvas, OpenGLRenderer* renderer,
130        jint flags) {
131    return renderer->save(flags);
132}
133
134static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject canvas,
135        OpenGLRenderer* renderer) {
136    return renderer->getSaveCount();
137}
138
139static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject canvas,
140        OpenGLRenderer* renderer) {
141    renderer->restore();
142}
143
144static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject canvas,
145        OpenGLRenderer* renderer, jint saveCount) {
146    renderer->restoreToCount(saveCount);
147}
148
149// ----------------------------------------------------------------------------
150// Layers
151// ----------------------------------------------------------------------------
152
153static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject canvas,
154        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
155        SkPaint* paint, jint saveFlags) {
156    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
157}
158
159static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject canvas,
160        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
161        jint alpha, jint saveFlags) {
162    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
163}
164
165// ----------------------------------------------------------------------------
166// Clipping
167// ----------------------------------------------------------------------------
168
169static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject canvas,
170        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
171        SkCanvas::EdgeType edge) {
172    return renderer->quickReject(left, top, right, bottom);
173}
174
175static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject canvas,
176        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
177        SkRegion::Op op) {
178    return renderer->clipRect(left, top, right, bottom, op);
179}
180
181static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject canvas,
182        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
183        SkRegion::Op op) {
184    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
185}
186
187static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject canvas,
188        OpenGLRenderer* renderer, jobject rect) {
189    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
190
191    env->CallVoidMethod(rect, gRectClassInfo.set,
192            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
193
194    return !bounds.isEmpty();
195}
196
197// ----------------------------------------------------------------------------
198// Transforms
199// ----------------------------------------------------------------------------
200
201static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject canvas,
202        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
203    renderer->translate(dx, dy);
204}
205
206static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject canvas,
207        OpenGLRenderer* renderer, jfloat degrees) {
208    renderer->rotate(degrees);
209}
210
211static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject canvas,
212        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
213    renderer->scale(sx, sy);
214}
215
216static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject canvas,
217        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
218    renderer->skew(sx, sy);
219}
220
221static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject canvas,
222        OpenGLRenderer* renderer, SkMatrix* matrix) {
223    renderer->setMatrix(matrix);
224}
225
226static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
227        jobject canvas, OpenGLRenderer* renderer) {
228    return renderer->getMatrix();
229}
230
231static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject canvas,
232        OpenGLRenderer* renderer, SkMatrix* matrix) {
233    renderer->getMatrix(matrix);
234}
235
236static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject canvas,
237        OpenGLRenderer* renderer, SkMatrix* matrix) {
238    renderer->concatMatrix(matrix);
239}
240
241// ----------------------------------------------------------------------------
242// Drawing
243// ----------------------------------------------------------------------------
244
245static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject canvas,
246        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
247        float top, SkPaint* paint) {
248    // This object allows the renderer to allocate a global JNI ref to the buffer object.
249    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
250
251    renderer->drawBitmap(bitmap, left, top, paint);
252}
253
254static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject canvas,
255        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
256        float srcLeft, float srcTop, float srcRight, float srcBottom,
257        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
258    // This object allows the renderer to allocate a global JNI ref to the buffer object.
259    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
260
261    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
262            dstLeft, dstTop, dstRight, dstBottom, paint);
263}
264
265static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject canvas,
266        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
267        SkPaint* paint) {
268    // This object allows the renderer to allocate a global JNI ref to the buffer object.
269    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
270
271    renderer->drawBitmap(bitmap, matrix, paint);
272}
273
274static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject canvas,
275        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
276        float left, float top, float right, float bottom, SkPaint* paint) {
277    // This object allows the renderer to allocate a global JNI ref to the buffer object.
278    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
279
280    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
281    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
282    Res_png_9patch::deserialize(patch);
283
284    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
285            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
286            left, top, right, bottom, paint);
287
288    env->ReleaseByteArrayElements(chunks, storage, 0);
289}
290
291static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject canvas,
292        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
293    renderer->drawColor(color, mode);
294}
295
296static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas,
297        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
298        SkPaint* paint) {
299    renderer->drawRect(left, top, right, bottom, paint);
300}
301
302static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject canvas,
303        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
304    SkRegion::Iterator it(*region);
305    while (!it.done()) {
306        const SkIRect& r = it.rect();
307        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
308        it.next();
309    }
310}
311
312static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject canvas,
313        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
314    renderer->drawPath(path, paint);
315}
316
317static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject canvas,
318        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
319    jfloat* storage = env->GetFloatArrayElements(points, NULL);
320
321    renderer->drawLines(storage + offset, count, paint);
322
323    env->ReleaseFloatArrayElements(points, storage, 0);
324}
325
326// ----------------------------------------------------------------------------
327// Shaders and color filters
328// ----------------------------------------------------------------------------
329
330static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject canvas,
331        OpenGLRenderer* renderer) {
332    renderer->resetShader();
333    renderer->resetColorFilter();
334    renderer->resetShadow();
335}
336
337static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject canvas,
338        OpenGLRenderer* renderer, SkiaShader* shader) {
339    renderer->setupShader(shader);
340}
341
342static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject canvas,
343        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
344    renderer->setupColorFilter(filter);
345}
346
347static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject canvas,
348        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
349    renderer->setupShadow(radius, dx, dy, color);
350}
351
352// ----------------------------------------------------------------------------
353// Text
354// ----------------------------------------------------------------------------
355
356static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
357        jfloat x, jfloat y, int flags, SkPaint* paint) {
358    const jchar *workText;
359    jchar* buffer = NULL;
360    int32_t workBytes;
361    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
362        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
363        free(buffer);
364    }
365}
366
367static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
368        jint start, jint count, jint contextCount, jfloat x, jfloat y,
369        int flags, SkPaint* paint) {
370    uint8_t rtl = flags & 0x1;
371    if (rtl) {
372        SkAutoSTMalloc<80, jchar> buffer(contextCount);
373        jchar* shaped = buffer.get();
374        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
375            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
376        } else {
377            LOGW("drawTextRun error");
378        }
379    } else {
380        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
381    }
382}
383
384static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject canvas,
385        OpenGLRenderer* renderer, jcharArray text, int index, int count,
386        jfloat x, jfloat y, int flags, SkPaint* paint) {
387    jchar* textArray = env->GetCharArrayElements(text, NULL);
388    renderText(renderer, textArray + index, count, x, y, flags, paint);
389    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
390}
391
392static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject canvas,
393        OpenGLRenderer* renderer, jstring text, int start, int end,
394        jfloat x, jfloat y, int flags, SkPaint* paint) {
395    const jchar* textArray = env->GetStringChars(text, NULL);
396    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
397    env->ReleaseStringChars(text, textArray);
398}
399
400static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject canvas,
401        OpenGLRenderer* renderer, jcharArray text, int index, int count,
402        int contextIndex, int contextCount, jfloat x, jfloat y, int dirFlags,
403        SkPaint* paint) {
404    jchar* textArray = env->GetCharArrayElements(text, NULL);
405    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
406            count, contextCount, x, y, dirFlags, paint);
407    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
408 }
409
410static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject canvas,
411        OpenGLRenderer* renderer, jstring text, int start, int end,
412        int contextStart, int contextEnd, jfloat x, jfloat y, int dirFlags,
413        SkPaint* paint) {
414    const jchar* textArray = env->GetStringChars(text, NULL);
415    jint count = end - start;
416    jint contextCount = contextEnd - contextStart;
417    renderTextRun(renderer, textArray + contextStart, start - contextStart,
418            count, contextCount, x, y, dirFlags, paint);
419    env->ReleaseStringChars(text, textArray);
420}
421
422// ----------------------------------------------------------------------------
423// Display lists
424// ----------------------------------------------------------------------------
425
426static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
427        jobject canvas, DisplayListRenderer* renderer) {
428    return renderer->getDisplayList();
429}
430
431static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
432        jobject clazz, DisplayListRenderer* renderer) {
433    if (renderer == NULL) {
434        renderer = new DisplayListRenderer;
435    } else {
436        renderer->reset();
437    }
438    return renderer;
439}
440
441static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
442        jobject clazz, DisplayList* displayList) {
443    delete displayList;
444}
445
446static void android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
447        jobject canvas, OpenGLRenderer* renderer, DisplayList* displayList) {
448    renderer->drawDisplayList(displayList);
449}
450
451// ----------------------------------------------------------------------------
452// Layers
453// ----------------------------------------------------------------------------
454
455static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject canvas,
456        OpenGLRenderer* renderer) {
457    renderer->interrupt();
458}
459
460static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject canvas,
461        OpenGLRenderer* renderer) {
462    renderer->resume();
463}
464
465static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
466        jobject clazz, Layer* layer) {
467    if (layer) {
468        return new LayerRenderer(layer);
469    }
470    return NULL;
471}
472
473static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
474        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
475    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
476
477    if (layer) {
478        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
479        storage[0] = layer->width;
480        storage[1] = layer->height;
481        env->ReleaseIntArrayElements(layerInfo, storage, 0);
482    }
483
484    return layer;
485}
486
487static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
488        Layer* layer, jint width, jint height, jintArray layerInfo) {
489    LayerRenderer::resizeLayer(layer, width, height);
490
491    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
492    storage[0] = layer->width;
493    storage[1] = layer->height;
494    env->ReleaseIntArrayElements(layerInfo, storage, 0);
495}
496
497static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
498    LayerRenderer::destroyLayer(layer);
499}
500
501static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
502        jobject clazz, Layer* layer) {
503    LayerRenderer::destroyLayerDeferred(layer);
504}
505
506static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject canvas,
507        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
508    renderer->drawLayer(layer, x, y, paint);
509}
510
511#endif // USE_OPENGL_RENDERER
512
513// ----------------------------------------------------------------------------
514// Common
515// ----------------------------------------------------------------------------
516
517static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
518#ifdef USE_OPENGL_RENDERER
519    return JNI_TRUE;
520#else
521    return JNI_FALSE;
522#endif
523}
524
525// ----------------------------------------------------------------------------
526// JNI Glue
527// ----------------------------------------------------------------------------
528
529const char* const kClassPathName = "android/view/GLES20Canvas";
530
531static JNINativeMethod gMethods[] = {
532    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
533
534#ifdef USE_OPENGL_RENDERER
535    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
536    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
537    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
538    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
539    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
540    { "nAcquireContext",    "(I)V",            (void*) android_view_GLES20Canvas_acquireContext },
541    { "nReleaseContext",    "(I)V",            (void*) android_view_GLES20Canvas_releaseContext },
542
543    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
544    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
545    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
546    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
547
548    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
549    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
550
551    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
552    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
553    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
554
555    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
556    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
557    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
558    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
559
560    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
561    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
562    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
563    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
564
565    { "nDrawBitmap",        "(II[BFFI)V", (void*) android_view_GLES20Canvas_drawBitmap },
566    { "nDrawBitmap",        "(II[BFFFFFFFFI)V", (void*) android_view_GLES20Canvas_drawBitmapRect },
567    { "nDrawBitmap",        "(II[BII)V", (void*) android_view_GLES20Canvas_drawBitmapMatrix },
568    { "nDrawPatch",         "(II[B[BFFFFI)V", (void*) android_view_GLES20Canvas_drawPatch },
569
570    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
571    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
572    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
573    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
574    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
575
576    { "nResetModifiers",    "(I)V",            (void*) android_view_GLES20Canvas_resetModifiers },
577    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
578    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
579    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
580
581    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
582    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
583            (void*) android_view_GLES20Canvas_drawText },
584
585    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
586    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
587            (void*) android_view_GLES20Canvas_drawTextRun },
588
589    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
590            (void*) android_view_GLES20Canvas_getClipBounds },
591
592    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
593    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
594    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
595    { "nDrawDisplayList",        "(II)V",      (void*) android_view_GLES20Canvas_drawDisplayList },
596
597    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
598    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
599
600    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
601    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
602    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
603    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
604    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
605    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
606
607#endif
608};
609
610#ifdef USE_OPENGL_RENDERER
611    #define FIND_CLASS(var, className) \
612            var = env->FindClass(className); \
613            LOG_FATAL_IF(! var, "Unable to find class " className); \
614            var = jclass(env->NewGlobalRef(var));
615
616    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
617            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
618            LOG_FATAL_IF(! var, "Unable to find method " methodName);
619#else
620    #define FIND_CLASS(var, className)
621    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
622#endif
623
624int register_android_view_GLES20Canvas(JNIEnv* env) {
625    FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect");
626    GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V");
627
628    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
629}
630
631};
632