android_view_GLES20Canvas.cpp revision 6c319ca1275c8db892c39b48fc54864c949f9171 
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_setMatrix(JNIEnv* env, jobject canvas,
217        OpenGLRenderer* renderer, SkMatrix* matrix) {
218    renderer->setMatrix(matrix);
219}
220
221static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
222        jobject canvas, OpenGLRenderer* renderer) {
223    return renderer->getMatrix();
224}
225
226static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject canvas,
227        OpenGLRenderer* renderer, SkMatrix* matrix) {
228    renderer->getMatrix(matrix);
229}
230
231static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject canvas,
232        OpenGLRenderer* renderer, SkMatrix* matrix) {
233    renderer->concatMatrix(matrix);
234}
235
236// ----------------------------------------------------------------------------
237// Drawing
238// ----------------------------------------------------------------------------
239
240static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject canvas,
241        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
242        float top, SkPaint* paint) {
243    // This object allows the renderer to allocate a global JNI ref to the buffer object.
244    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
245
246    renderer->drawBitmap(bitmap, left, top, paint);
247}
248
249static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject canvas,
250        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
251        float srcLeft, float srcTop, float srcRight, float srcBottom,
252        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
253    // This object allows the renderer to allocate a global JNI ref to the buffer object.
254    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
255
256    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
257            dstLeft, dstTop, dstRight, dstBottom, paint);
258}
259
260static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject canvas,
261        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
262        SkPaint* paint) {
263    // This object allows the renderer to allocate a global JNI ref to the buffer object.
264    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
265
266    renderer->drawBitmap(bitmap, matrix, paint);
267}
268
269static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject canvas,
270        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
271        float left, float top, float right, float bottom, SkPaint* paint) {
272    // This object allows the renderer to allocate a global JNI ref to the buffer object.
273    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
274
275    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
276    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
277    Res_png_9patch::deserialize(patch);
278
279    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
280            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
281            left, top, right, bottom, paint);
282
283    env->ReleaseByteArrayElements(chunks, storage, 0);
284}
285
286static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject canvas,
287        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
288    renderer->drawColor(color, mode);
289}
290
291static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas,
292        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
293        SkPaint* paint) {
294    renderer->drawRect(left, top, right, bottom, paint);
295}
296
297static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject canvas,
298        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
299    SkRegion::Iterator it(*region);
300    while (!it.done()) {
301        const SkIRect& r = it.rect();
302        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
303        it.next();
304    }
305}
306
307static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject canvas,
308        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
309    renderer->drawPath(path, paint);
310}
311
312static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject canvas,
313        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
314    jfloat* storage = env->GetFloatArrayElements(points, NULL);
315
316    renderer->drawLines(storage + offset, count, paint);
317
318    env->ReleaseFloatArrayElements(points, storage, 0);
319}
320
321// ----------------------------------------------------------------------------
322// Shaders and color filters
323// ----------------------------------------------------------------------------
324
325static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject canvas,
326        OpenGLRenderer* renderer) {
327    renderer->resetShader();
328    renderer->resetColorFilter();
329    renderer->resetShadow();
330}
331
332static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject canvas,
333        OpenGLRenderer* renderer, SkiaShader* shader) {
334    renderer->setupShader(shader);
335}
336
337static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject canvas,
338        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
339    renderer->setupColorFilter(filter);
340}
341
342static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject canvas,
343        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
344    renderer->setupShadow(radius, dx, dy, color);
345}
346
347// ----------------------------------------------------------------------------
348// Text
349// ----------------------------------------------------------------------------
350
351static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
352        jfloat x, jfloat y, int flags, SkPaint* paint) {
353    const jchar *workText;
354    jchar* buffer = NULL;
355    int32_t workBytes;
356    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
357        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
358        free(buffer);
359    }
360}
361
362static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
363        jint start, jint count, jint contextCount, jfloat x, jfloat y,
364        int flags, SkPaint* paint) {
365    uint8_t rtl = flags & 0x1;
366    if (rtl) {
367        SkAutoSTMalloc<80, jchar> buffer(contextCount);
368        jchar* shaped = buffer.get();
369        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
370            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
371        } else {
372            LOGW("drawTextRun error");
373        }
374    } else {
375        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
376    }
377}
378
379static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject canvas,
380        OpenGLRenderer* renderer, jcharArray text, int index, int count,
381        jfloat x, jfloat y, int flags, SkPaint* paint) {
382    jchar* textArray = env->GetCharArrayElements(text, NULL);
383    renderText(renderer, textArray + index, count, x, y, flags, paint);
384    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
385}
386
387static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject canvas,
388        OpenGLRenderer* renderer, jstring text, int start, int end,
389        jfloat x, jfloat y, int flags, SkPaint* paint) {
390    const jchar* textArray = env->GetStringChars(text, NULL);
391    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
392    env->ReleaseStringChars(text, textArray);
393}
394
395static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject canvas,
396        OpenGLRenderer* renderer, jcharArray text, int index, int count,
397        int contextIndex, int contextCount, jfloat x, jfloat y, int dirFlags,
398        SkPaint* paint) {
399    jchar* textArray = env->GetCharArrayElements(text, NULL);
400    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
401            count, contextCount, x, y, dirFlags, paint);
402    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
403 }
404
405static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject canvas,
406        OpenGLRenderer* renderer, jstring text, int start, int end,
407        int contextStart, int contextEnd, jfloat x, jfloat y, int dirFlags,
408        SkPaint* paint) {
409    const jchar* textArray = env->GetStringChars(text, NULL);
410    jint count = end - start;
411    jint contextCount = contextEnd - contextStart;
412    renderTextRun(renderer, textArray + contextStart, start - contextStart,
413            count, contextCount, x, y, dirFlags, paint);
414    env->ReleaseStringChars(text, textArray);
415}
416
417// ----------------------------------------------------------------------------
418// Display lists
419// ----------------------------------------------------------------------------
420
421static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
422        jobject canvas, DisplayListRenderer* renderer) {
423    return renderer->getDisplayList();
424}
425
426static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
427        jobject clazz, DisplayListRenderer* renderer) {
428    if (renderer == NULL) {
429        renderer = new DisplayListRenderer;
430    } else {
431        renderer->reset();
432    }
433    return renderer;
434}
435
436static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
437        jobject clazz, DisplayList* displayList) {
438    delete displayList;
439}
440
441static void android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
442        jobject canvas, OpenGLRenderer* renderer, DisplayList* displayList) {
443    renderer->drawDisplayList(displayList);
444}
445
446// ----------------------------------------------------------------------------
447// Layers
448// ----------------------------------------------------------------------------
449
450static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject canvas,
451        OpenGLRenderer* renderer) {
452    renderer->interrupt();
453}
454
455static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject canvas,
456        OpenGLRenderer* renderer) {
457    renderer->resume();
458}
459
460static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
461        jobject clazz, jint fbo) {
462    return new LayerRenderer(fbo);
463}
464
465static jint android_view_GLES20Canvas_createLayer(JNIEnv* env,
466        jobject clazz, jint width, jint height, jintArray layerInfo) {
467    uint32_t layerWidth = 0;
468    uint32_t layerHeight = 0;
469    GLuint textureId = 0;
470
471    jint layerId = LayerRenderer::createLayer(width, height,
472            &layerWidth, &layerHeight, &textureId);
473
474    if (layerId) {
475        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
476        storage[0] = layerWidth;
477        storage[1] = layerHeight;
478        storage[2] = textureId;
479        env->ReleaseIntArrayElements(layerInfo, storage, 0);
480    }
481
482    return layerId;
483}
484
485static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env,
486        jobject clazz, jint layerId, jint layerTextureId, jint width, jint height,
487        jintArray layerInfo) {
488    uint32_t layerWidth = 0;
489    uint32_t layerHeight = 0;
490
491    LayerRenderer::resizeLayer(layerId, layerTextureId, width, height, &layerWidth, &layerHeight);
492
493    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
494    storage[0] = layerWidth;
495    storage[1] = layerHeight;
496    env->ReleaseIntArrayElements(layerInfo, storage, 0);
497}
498
499static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env,
500        jobject clazz, jint layerId, jint layerTextureId) {
501    LayerRenderer::destroyLayer(layerId, layerTextureId);
502}
503
504static void android_view_GLES20Canvas_drawLayer(JNIEnv* env,
505        jobject canvas, OpenGLRenderer* renderer,
506        jfloat left, jfloat top, jfloat right, jfloat bottom,
507        jint layerTexture, jfloat u, jfloat v, SkPaint* paint) {
508    renderer->drawLayer(layerTexture, left, top, right, bottom, u, v, 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
559    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
560    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
561    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
562    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
563
564    { "nDrawBitmap",        "(II[BFFI)V", (void*) android_view_GLES20Canvas_drawBitmap },
565    { "nDrawBitmap",        "(II[BFFFFFFFFI)V", (void*) android_view_GLES20Canvas_drawBitmapRect },
566    { "nDrawBitmap",        "(II[BII)V", (void*) android_view_GLES20Canvas_drawBitmapMatrix },
567    { "nDrawPatch",         "(II[B[BFFFFI)V", (void*) android_view_GLES20Canvas_drawPatch },
568
569    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
570    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
571    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
572    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
573    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
574
575    { "nResetModifiers",    "(I)V",            (void*) android_view_GLES20Canvas_resetModifiers },
576    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
577    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
578    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
579
580    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
581    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
582            (void*) android_view_GLES20Canvas_drawText },
583
584    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
585    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
586            (void*) android_view_GLES20Canvas_drawTextRun },
587
588    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
589            (void*) android_view_GLES20Canvas_getClipBounds },
590
591    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
592    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
593    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
594    { "nDrawDisplayList",        "(II)V",      (void*) android_view_GLES20Canvas_drawDisplayList },
595
596    { "nInterrupt",              "(I)V",        (void*) android_view_GLES20Canvas_interrupt },
597    { "nResume",                 "(I)V",        (void*) android_view_GLES20Canvas_resume },
598
599    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
600    { "nCreateLayer",            "(II[I)I",    (void*) android_view_GLES20Canvas_createLayer },
601    { "nResizeLayer",            "(IIII[I)V",  (void*) android_view_GLES20Canvas_resizeLayer },
602    { "nDestroyLayer",           "(II)V",      (void*) android_view_GLES20Canvas_destroyLayer },
603    { "nDrawLayer",              "(IFFFFIFFI)V",
604            (void*) android_view_GLES20Canvas_drawLayer },
605
606#endif
607};
608
609#ifdef USE_OPENGL_RENDERER
610    #define FIND_CLASS(var, className) \
611            var = env->FindClass(className); \
612            LOG_FATAL_IF(! var, "Unable to find class " className); \
613            var = jclass(env->NewGlobalRef(var));
614
615    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
616            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
617            LOG_FATAL_IF(! var, "Unable to find method " methodName);
618#else
619    #define FIND_CLASS(var, className)
620    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
621#endif
622
623int register_android_view_GLES20Canvas(JNIEnv* env) {
624    FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect");
625    GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V");
626
627    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
628}
629
630};
631