android_view_GLES20Canvas.cpp revision 8f0095cd33558e9cc8a440047908e53b68906f5f 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OpenGLRenderer"
18
19#include <EGL/egl.h>
20
21#include "jni.h"
22#include "GraphicsJNI.h"
23#include <nativehelper/JNIHelp.h>
24#include <android_runtime/AndroidRuntime.h>
25#include <utils/ResourceTypes.h>
26
27#include <gui/SurfaceTexture.h>
28
29#include <SkBitmap.h>
30#include <SkCanvas.h>
31#include <SkMatrix.h>
32#include <SkPaint.h>
33#include <SkRegion.h>
34#include <SkScalerContext.h>
35#include <SkTemplates.h>
36#include <SkXfermode.h>
37
38#include <DisplayListRenderer.h>
39#include <LayerRenderer.h>
40#include <OpenGLRenderer.h>
41#include <SkiaShader.h>
42#include <SkiaColorFilter.h>
43#include <Rect.h>
44
45#include "TextLayout.h"
46
47namespace android {
48
49using namespace uirenderer;
50
51/**
52 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
53 *       devices. This means all the logic must be compiled only when the
54 *       preprocessor variable USE_OPENGL_RENDERER is defined.
55 */
56#ifdef USE_OPENGL_RENDERER
57
58///////////////////////////////////////////////////////////////////////////////
59// Defines
60///////////////////////////////////////////////////////////////////////////////
61
62// Debug
63#define DEBUG_RENDERER 0
64
65// Debug
66#if DEBUG_RENDERER
67    #define RENDERER_LOGD(...) LOGD(__VA_ARGS__)
68#else
69    #define RENDERER_LOGD(...)
70#endif
71
72#define MODIFIER_SHADOW 1
73#define MODIFIER_SHADER 2
74#define MODIFIER_COLOR_FILTER 4
75
76// ----------------------------------------------------------------------------
77
78static struct {
79    jmethodID set;
80} gRectClassInfo;
81
82// ----------------------------------------------------------------------------
83// Misc
84// ----------------------------------------------------------------------------
85
86static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
87    EGLDisplay display = eglGetCurrentDisplay();
88    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
89
90    eglGetError();
91    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
92
93    EGLint error = eglGetError();
94    RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
95
96    return error == EGL_SUCCESS;
97}
98
99// ----------------------------------------------------------------------------
100// Constructors
101// ----------------------------------------------------------------------------
102
103static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
104    RENDERER_LOGD("Create OpenGLRenderer");
105    return new OpenGLRenderer;
106}
107
108static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
109        OpenGLRenderer* renderer) {
110    RENDERER_LOGD("Destroy OpenGLRenderer");
111    delete renderer;
112}
113
114// ----------------------------------------------------------------------------
115// Setup
116// ----------------------------------------------------------------------------
117
118static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
119        OpenGLRenderer* renderer, jint width, jint height) {
120    renderer->setViewport(width, height);
121}
122
123static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
124        OpenGLRenderer* renderer, jboolean opaque) {
125    renderer->prepare(opaque);
126}
127
128static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
129        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
130        jboolean opaque) {
131    renderer->prepareDirty(left, top, right, bottom, opaque);
132}
133
134static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
135        OpenGLRenderer* renderer) {
136    renderer->finish();
137}
138
139static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
140        OpenGLRenderer* renderer, Functor *functor) {
141    android::uirenderer::Rect dirty;
142    return renderer->callDrawGLFunction(functor, dirty);
143}
144
145// ----------------------------------------------------------------------------
146// State
147// ----------------------------------------------------------------------------
148
149static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
150        jint flags) {
151    return renderer->save(flags);
152}
153
154static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
155        OpenGLRenderer* renderer) {
156    return renderer->getSaveCount();
157}
158
159static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
160        OpenGLRenderer* renderer) {
161    renderer->restore();
162}
163
164static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
165        OpenGLRenderer* renderer, jint saveCount) {
166    renderer->restoreToCount(saveCount);
167}
168
169// ----------------------------------------------------------------------------
170// Layers
171// ----------------------------------------------------------------------------
172
173static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
174        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
175        SkPaint* paint, jint saveFlags) {
176    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
177}
178
179static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
180        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
181        jint alpha, jint saveFlags) {
182    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
183}
184
185// ----------------------------------------------------------------------------
186// Clipping
187// ----------------------------------------------------------------------------
188
189static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
190        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
191        SkCanvas::EdgeType edge) {
192    return renderer->quickReject(left, top, right, bottom);
193}
194
195static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
196        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
197        SkRegion::Op op) {
198    return renderer->clipRect(left, top, right, bottom, op);
199}
200
201static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
202        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
203        SkRegion::Op op) {
204    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
205}
206
207static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
208        OpenGLRenderer* renderer, jobject rect) {
209    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
210
211    env->CallVoidMethod(rect, gRectClassInfo.set,
212            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
213
214    return !bounds.isEmpty();
215}
216
217// ----------------------------------------------------------------------------
218// Transforms
219// ----------------------------------------------------------------------------
220
221static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
222        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
223    renderer->translate(dx, dy);
224}
225
226static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
227        OpenGLRenderer* renderer, jfloat degrees) {
228    renderer->rotate(degrees);
229}
230
231static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
232        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
233    renderer->scale(sx, sy);
234}
235
236static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
237        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
238    renderer->skew(sx, sy);
239}
240
241static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
242        OpenGLRenderer* renderer, SkMatrix* matrix) {
243    renderer->setMatrix(matrix);
244}
245
246static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
247        jobject clazz, OpenGLRenderer* renderer) {
248    return renderer->getMatrix();
249}
250
251static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
252        OpenGLRenderer* renderer, SkMatrix* matrix) {
253    renderer->getMatrix(matrix);
254}
255
256static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
257        OpenGLRenderer* renderer, SkMatrix* matrix) {
258    renderer->concatMatrix(matrix);
259}
260
261// ----------------------------------------------------------------------------
262// Drawing
263// ----------------------------------------------------------------------------
264
265static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
266        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
267        float top, 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, left, top, paint);
272}
273
274static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
275        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
276        float srcLeft, float srcTop, float srcRight, float srcBottom,
277        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
278    // This object allows the renderer to allocate a global JNI ref to the buffer object.
279    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
280
281    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
282            dstLeft, dstTop, dstRight, dstBottom, paint);
283}
284
285static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
286        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
287        SkPaint* paint) {
288    // This object allows the renderer to allocate a global JNI ref to the buffer object.
289    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
290
291    renderer->drawBitmap(bitmap, matrix, paint);
292}
293
294static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
295        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
296        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
297        jintArray colors, jint colorOffset, SkPaint* paint) {
298    // This object allows the renderer to allocate a global JNI ref to the buffer object.
299    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
300
301    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
302    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
303
304    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
305
306    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
307    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
308}
309
310static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
311        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
312        float left, float top, float right, float bottom, SkPaint* paint) {
313    // This object allows the renderer to allocate a global JNI ref to the buffer object.
314    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
315
316    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
317    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
318    Res_png_9patch::deserialize(patch);
319
320    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
321            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
322            left, top, right, bottom, paint);
323
324    env->ReleaseByteArrayElements(chunks, storage, 0);
325}
326
327static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
328        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
329    renderer->drawColor(color, mode);
330}
331
332static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
333        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
334        SkPaint* paint) {
335    renderer->drawRect(left, top, right, bottom, paint);
336}
337
338static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
339        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
340        jfloat rx, jfloat ry, SkPaint* paint) {
341    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
342}
343
344static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
345        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
346    renderer->drawCircle(x, y, radius, paint);
347}
348
349static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
350        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
351        SkPaint* paint) {
352    renderer->drawOval(left, top, right, bottom, paint);
353}
354
355static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
356        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
357        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
358    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
359}
360
361static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
362        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
363    SkRegion::Iterator it(*region);
364    while (!it.done()) {
365        const SkIRect& r = it.rect();
366        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
367        it.next();
368    }
369}
370
371static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
372        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
373    jfloat* storage = env->GetFloatArrayElements(points, NULL);
374    renderer->drawPoints(storage + offset, count, paint);
375    env->ReleaseFloatArrayElements(points, storage, 0);
376}
377
378static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
379        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
380    renderer->drawPath(path, paint);
381}
382
383static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
384        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
385    jfloat* storage = env->GetFloatArrayElements(points, NULL);
386    renderer->drawLines(storage + offset, count, paint);
387    env->ReleaseFloatArrayElements(points, storage, 0);
388}
389
390// ----------------------------------------------------------------------------
391// Shaders and color filters
392// ----------------------------------------------------------------------------
393
394static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
395        OpenGLRenderer* renderer, jint modifiers) {
396    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
397    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
398    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
399}
400
401static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
402        OpenGLRenderer* renderer, SkiaShader* shader) {
403    renderer->setupShader(shader);
404}
405
406static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
407        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
408    renderer->setupColorFilter(filter);
409}
410
411static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
412        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
413    renderer->setupShadow(radius, dx, dy, color);
414}
415
416// ----------------------------------------------------------------------------
417// Text
418// ----------------------------------------------------------------------------
419
420static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
421        jfloat x, jfloat y, int flags, SkPaint* paint) {
422    const jchar *workText;
423    jchar* buffer = NULL;
424    int32_t workBytes;
425    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
426        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
427        free(buffer);
428    }
429}
430
431static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
432        jint start, jint count, jint contextCount, jfloat x, jfloat y,
433        int flags, SkPaint* paint) {
434    uint8_t rtl = flags & 0x1;
435    if (rtl) {
436        SkAutoSTMalloc<80, jchar> buffer(contextCount);
437        jchar* shaped = buffer.get();
438        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
439            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
440        } else {
441            LOGW("drawTextRun error");
442        }
443    } else {
444        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
445    }
446}
447
448static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
449        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
450        jfloat x, jfloat y, jint flags, SkPaint* paint) {
451    jchar* textArray = env->GetCharArrayElements(text, NULL);
452    renderText(renderer, textArray + index, count, x, y, flags, paint);
453    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
454}
455
456static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
457        OpenGLRenderer* renderer, jstring text, jint start, jint end,
458        jfloat x, jfloat y, jint flags, SkPaint* paint) {
459    const jchar* textArray = env->GetStringChars(text, NULL);
460    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
461    env->ReleaseStringChars(text, textArray);
462}
463
464static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
465        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
466        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
467        SkPaint* paint) {
468    jchar* textArray = env->GetCharArrayElements(text, NULL);
469    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
470            count, contextCount, x, y, dirFlags, paint);
471    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
472 }
473
474static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
475        OpenGLRenderer* renderer, jstring text, jint start, jint end,
476        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
477        SkPaint* paint) {
478    const jchar* textArray = env->GetStringChars(text, NULL);
479    jint count = end - start;
480    jint contextCount = contextEnd - contextStart;
481    renderTextRun(renderer, textArray + contextStart, start - contextStart,
482            count, contextCount, x, y, dirFlags, paint);
483    env->ReleaseStringChars(text, textArray);
484}
485
486// ----------------------------------------------------------------------------
487// Display lists
488// ----------------------------------------------------------------------------
489
490static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
491        jobject clazz, DisplayListRenderer* renderer) {
492    return renderer->getDisplayList();
493}
494
495static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
496        jobject clazz, DisplayListRenderer* renderer) {
497    if (renderer == NULL) {
498        renderer = new DisplayListRenderer;
499    } else {
500        renderer->reset();
501    }
502    return renderer;
503}
504
505static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
506        jobject clazz, DisplayList* displayList) {
507    delete displayList;
508}
509
510static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
511        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
512        jint width, jint height, jobject dirty) {
513    android::uirenderer::Rect bounds;
514    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
515    if (redraw && dirty != NULL) {
516        env->CallVoidMethod(dirty, gRectClassInfo.set,
517                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
518    }
519    return redraw;
520}
521
522// ----------------------------------------------------------------------------
523// Layers
524// ----------------------------------------------------------------------------
525
526static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
527        OpenGLRenderer* renderer) {
528    renderer->interrupt();
529}
530
531static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
532        OpenGLRenderer* renderer) {
533    renderer->resume();
534}
535
536static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
537        jobject clazz, Layer* layer) {
538    if (layer) {
539        return new LayerRenderer(layer);
540    }
541    return NULL;
542}
543
544static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
545        jintArray layerInfo) {
546    Layer* layer = LayerRenderer::createTextureLayer();
547
548    if (layer) {
549        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
550        storage[0] = layer->texture;
551        env->ReleaseIntArrayElements(layerInfo, storage, 0);
552    }
553
554    return layer;
555}
556
557static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
558        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
559    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
560
561    if (layer) {
562        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
563        storage[0] = layer->width;
564        storage[1] = layer->height;
565        env->ReleaseIntArrayElements(layerInfo, storage, 0);
566    }
567
568    return layer;
569}
570
571static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
572        Layer* layer, jint width, jint height, jintArray layerInfo) {
573    LayerRenderer::resizeLayer(layer, width, height);
574
575    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
576    storage[0] = layer->width;
577    storage[1] = layer->height;
578    env->ReleaseIntArrayElements(layerInfo, storage, 0);
579}
580
581static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
582        Layer* layer, jint width, jint height, SurfaceTexture* surface) {
583    float transform[16];
584    surface->updateTexImage();
585    surface->getTransformMatrix(transform);
586    GLenum renderTarget = surface->getCurrentTextureTarget();
587
588    LayerRenderer::updateTextureLayer(layer, width, height, renderTarget, transform);
589}
590
591static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
592    LayerRenderer::destroyLayer(layer);
593}
594
595static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
596        jobject clazz, Layer* layer) {
597    LayerRenderer::destroyLayerDeferred(layer);
598}
599
600static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
601        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
602    renderer->drawLayer(layer, x, y, paint);
603}
604
605#endif // USE_OPENGL_RENDERER
606
607// ----------------------------------------------------------------------------
608// Common
609// ----------------------------------------------------------------------------
610
611static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
612#ifdef USE_OPENGL_RENDERER
613    return JNI_TRUE;
614#else
615    return JNI_FALSE;
616#endif
617}
618
619// ----------------------------------------------------------------------------
620// Logging
621// ----------------------------------------------------------------------------
622
623static void
624android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor)
625{
626#ifdef USE_OPENGL_RENDERER
627    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
628    android::uirenderer::DisplayList::outputLogBuffer(fd);
629#endif // USE_OPENGL_RENDERER
630}
631
632// ----------------------------------------------------------------------------
633// JNI Glue
634// ----------------------------------------------------------------------------
635
636const char* const kClassPathName = "android/view/GLES20Canvas";
637
638static JNINativeMethod gMethods[] = {
639    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
640
641#ifdef USE_OPENGL_RENDERER
642    { "nPreserveBackBuffer", "()Z",            (void*) android_view_GLES20Canvas_preserveBackBuffer },
643
644    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
645    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
646    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
647    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
648    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
649    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
650
651    { "nCallDrawGLFunction", "(II)Z",
652            (void*) android_view_GLES20Canvas_callDrawGLFunction },
653
654    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
655    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
656    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
657    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
658
659    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
660    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
661
662    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
663    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
664    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
665
666    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
667    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
668    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
669    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
670
671    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
672    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
673    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
674    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
675
676    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
677    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
678    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
679
680    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
681
682    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
683
684    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
685    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
686    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
687    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
688    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
689    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
690    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
691    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
692
693    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
694    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
695
696    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
697    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
698    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
699    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
700
701    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
702    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
703            (void*) android_view_GLES20Canvas_drawText },
704
705    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
706    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
707            (void*) android_view_GLES20Canvas_drawTextRun },
708
709    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
710            (void*) android_view_GLES20Canvas_getClipBounds },
711
712    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
713    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
714    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
715    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
716                                               (void*) android_view_GLES20Canvas_drawDisplayList },
717
718    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
719    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
720
721    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
722    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
723    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
724    { "nCreateTextureLayer",     "([I)I",      (void*) android_view_GLES20Canvas_createTextureLayer },
725    { "nUpdateTextureLayer",     "(IIII)V",    (void*) android_view_GLES20Canvas_updateTextureLayer },
726    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
727    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
728    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
729
730#endif
731};
732
733static JNINativeMethod gActivityThreadMethods[] = {
734    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
735                                               (void*) android_app_ActivityThread_dumpGraphics }
736};
737
738
739#ifdef USE_OPENGL_RENDERER
740    #define FIND_CLASS(var, className) \
741            var = env->FindClass(className); \
742            LOG_FATAL_IF(! var, "Unable to find class " className);
743
744    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
745            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
746            LOG_FATAL_IF(! var, "Unable to find method " methodName);
747#else
748    #define FIND_CLASS(var, className)
749    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
750#endif
751
752int register_android_view_GLES20Canvas(JNIEnv* env) {
753    jclass clazz;
754    FIND_CLASS(clazz, "android/graphics/Rect");
755    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
756
757    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
758}
759
760const char* const kActivityThreadPathName = "android/app/ActivityThread";
761
762int register_android_app_ActivityThread(JNIEnv* env)
763{
764    return AndroidRuntime::registerNativeMethods(
765            env, kActivityThreadPathName,
766            gActivityThreadMethods, NELEM(gActivityThreadMethods));
767}
768
769};
770