android_view_GLES20Canvas.cpp revision 7d7b5490a0b0763e831b31bc11f17d8159b5914a 
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 <SkBitmap.h>
28#include <SkCanvas.h>
29#include <SkMatrix.h>
30#include <SkPaint.h>
31#include <SkRegion.h>
32#include <SkScalerContext.h>
33#include <SkTemplates.h>
34#include <SkXfermode.h>
35
36#include <DisplayListRenderer.h>
37#include <LayerRenderer.h>
38#include <OpenGLDebugRenderer.h>
39#include <OpenGLRenderer.h>
40#include <SkiaShader.h>
41#include <SkiaColorFilter.h>
42#include <Rect.h>
43
44#include "TextLayout.h"
45
46namespace android {
47
48using namespace uirenderer;
49
50/**
51 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
52 *       devices. This means all the logic must be compiled only when the
53 *       preprocessor variable USE_OPENGL_RENDERER is defined.
54 */
55#ifdef USE_OPENGL_RENDERER
56
57///////////////////////////////////////////////////////////////////////////////
58// Defines
59///////////////////////////////////////////////////////////////////////////////
60
61// Debug
62#define DEBUG_RENDERER 0
63#define PROFILE_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// ----------------------------------------------------------------------------
73
74static struct {
75    jclass clazz;
76    jmethodID set;
77} gRectClassInfo;
78
79// ----------------------------------------------------------------------------
80// Misc
81// ----------------------------------------------------------------------------
82
83static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
84    EGLDisplay display = eglGetCurrentDisplay();
85    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
86
87    eglGetError();
88    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
89
90    EGLint error = eglGetError();
91    RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
92
93    return error == EGL_SUCCESS;
94}
95
96// ----------------------------------------------------------------------------
97// Constructors
98// ----------------------------------------------------------------------------
99
100static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
101    RENDERER_LOGD("Create OpenGLRenderer");
102#if PROFILE_RENDERER
103    return new OpenGLDebugRenderer;
104#else
105    return new OpenGLRenderer;
106#endif
107}
108
109static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
110        OpenGLRenderer* renderer) {
111    RENDERER_LOGD("Destroy OpenGLRenderer");
112    delete renderer;
113}
114
115// ----------------------------------------------------------------------------
116// Setup
117// ----------------------------------------------------------------------------
118
119static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
120        OpenGLRenderer* renderer, jint width, jint height) {
121    renderer->setViewport(width, height);
122}
123
124static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
125        OpenGLRenderer* renderer, jboolean opaque) {
126    renderer->prepare(opaque);
127}
128
129static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
130        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
131        jboolean opaque) {
132    renderer->prepareDirty(left, top, right, bottom, opaque);
133}
134
135static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
136        OpenGLRenderer* renderer) {
137    renderer->finish();
138}
139
140static void android_view_GLES20Canvas_acquireContext(JNIEnv* env, jobject clazz,
141        OpenGLRenderer* renderer) {
142    renderer->acquireContext();
143}
144
145static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
146        OpenGLRenderer* renderer, Functor *functor) {
147    return renderer->callDrawGLFunction(functor);
148}
149
150static void android_view_GLES20Canvas_releaseContext(JNIEnv* env, jobject clazz,
151        OpenGLRenderer* renderer) {
152    renderer->releaseContext();
153}
154
155// ----------------------------------------------------------------------------
156// State
157// ----------------------------------------------------------------------------
158
159static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
160        jint flags) {
161    return renderer->save(flags);
162}
163
164static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
165        OpenGLRenderer* renderer) {
166    return renderer->getSaveCount();
167}
168
169static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
170        OpenGLRenderer* renderer) {
171    renderer->restore();
172}
173
174static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
175        OpenGLRenderer* renderer, jint saveCount) {
176    renderer->restoreToCount(saveCount);
177}
178
179// ----------------------------------------------------------------------------
180// Layers
181// ----------------------------------------------------------------------------
182
183static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
184        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
185        SkPaint* paint, jint saveFlags) {
186    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
187}
188
189static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
190        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
191        jint alpha, jint saveFlags) {
192    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
193}
194
195// ----------------------------------------------------------------------------
196// Clipping
197// ----------------------------------------------------------------------------
198
199static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
200        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
201        SkCanvas::EdgeType edge) {
202    return renderer->quickReject(left, top, right, bottom);
203}
204
205static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
206        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
207        SkRegion::Op op) {
208    return renderer->clipRect(left, top, right, bottom, op);
209}
210
211static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
212        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
213        SkRegion::Op op) {
214    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
215}
216
217static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
218        OpenGLRenderer* renderer, jobject rect) {
219    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
220
221    env->CallVoidMethod(rect, gRectClassInfo.set,
222            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
223
224    return !bounds.isEmpty();
225}
226
227// ----------------------------------------------------------------------------
228// Transforms
229// ----------------------------------------------------------------------------
230
231static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
232        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
233    renderer->translate(dx, dy);
234}
235
236static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
237        OpenGLRenderer* renderer, jfloat degrees) {
238    renderer->rotate(degrees);
239}
240
241static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
242        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
243    renderer->scale(sx, sy);
244}
245
246static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
247        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
248    renderer->skew(sx, sy);
249}
250
251static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
252        OpenGLRenderer* renderer, SkMatrix* matrix) {
253    renderer->setMatrix(matrix);
254}
255
256static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
257        jobject clazz, OpenGLRenderer* renderer) {
258    return renderer->getMatrix();
259}
260
261static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
262        OpenGLRenderer* renderer, SkMatrix* matrix) {
263    renderer->getMatrix(matrix);
264}
265
266static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
267        OpenGLRenderer* renderer, SkMatrix* matrix) {
268    renderer->concatMatrix(matrix);
269}
270
271// ----------------------------------------------------------------------------
272// Drawing
273// ----------------------------------------------------------------------------
274
275static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
276        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
277        float top, 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, left, top, paint);
282}
283
284static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
285        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
286        float srcLeft, float srcTop, float srcRight, float srcBottom,
287        float dstLeft, float dstTop, float dstRight, float dstBottom, 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, srcLeft, srcTop, srcRight, srcBottom,
292            dstLeft, dstTop, dstRight, dstBottom, paint);
293}
294
295static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
296        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
297        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    renderer->drawBitmap(bitmap, matrix, paint);
302}
303
304static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
305        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
306        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
307        jintArray colors, jint colorOffset, SkPaint* paint) {
308    // This object allows the renderer to allocate a global JNI ref to the buffer object.
309    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
310
311    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
312    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
313
314    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
315
316    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
317    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
318}
319
320static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
321        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
322        float left, float top, float right, float bottom, SkPaint* paint) {
323    // This object allows the renderer to allocate a global JNI ref to the buffer object.
324    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
325
326    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
327    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
328    Res_png_9patch::deserialize(patch);
329
330    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
331            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
332            left, top, right, bottom, paint);
333
334    env->ReleaseByteArrayElements(chunks, storage, 0);
335}
336
337static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
338        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
339    renderer->drawColor(color, mode);
340}
341
342static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
343        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
344        SkPaint* paint) {
345    renderer->drawRect(left, top, right, bottom, paint);
346}
347
348static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
349        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
350        jfloat rx, jfloat ry, SkPaint* paint) {
351    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
352}
353
354static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
355        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
356    renderer->drawCircle(x, y, radius, paint);
357}
358
359static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
360        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
361        SkPaint* paint) {
362    renderer->drawOval(left, top, right, bottom, paint);
363}
364
365static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
366        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
367        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
368    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
369}
370
371static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
372        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
373    SkRegion::Iterator it(*region);
374    while (!it.done()) {
375        const SkIRect& r = it.rect();
376        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
377        it.next();
378    }
379}
380
381static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
382        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
383    renderer->drawPath(path, paint);
384}
385
386static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
387        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
388    jfloat* storage = env->GetFloatArrayElements(points, NULL);
389
390    renderer->drawLines(storage + offset, count, paint);
391
392    env->ReleaseFloatArrayElements(points, storage, 0);
393}
394
395// ----------------------------------------------------------------------------
396// Shaders and color filters
397// ----------------------------------------------------------------------------
398
399static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
400        OpenGLRenderer* renderer) {
401    renderer->resetShader();
402    renderer->resetColorFilter();
403    renderer->resetShadow();
404}
405
406static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
407        OpenGLRenderer* renderer, SkiaShader* shader) {
408    renderer->setupShader(shader);
409}
410
411static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
412        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
413    renderer->setupColorFilter(filter);
414}
415
416static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
417        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
418    renderer->setupShadow(radius, dx, dy, color);
419}
420
421// ----------------------------------------------------------------------------
422// Text
423// ----------------------------------------------------------------------------
424
425static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
426        jfloat x, jfloat y, int flags, SkPaint* paint) {
427    const jchar *workText;
428    jchar* buffer = NULL;
429    int32_t workBytes;
430    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
431        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
432        free(buffer);
433    }
434}
435
436static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
437        jint start, jint count, jint contextCount, jfloat x, jfloat y,
438        int flags, SkPaint* paint) {
439    uint8_t rtl = flags & 0x1;
440    if (rtl) {
441        SkAutoSTMalloc<80, jchar> buffer(contextCount);
442        jchar* shaped = buffer.get();
443        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
444            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
445        } else {
446            LOGW("drawTextRun error");
447        }
448    } else {
449        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
450    }
451}
452
453static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
454        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
455        jfloat x, jfloat y, jint flags, SkPaint* paint) {
456    jchar* textArray = env->GetCharArrayElements(text, NULL);
457    renderText(renderer, textArray + index, count, x, y, flags, paint);
458    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
459}
460
461static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
462        OpenGLRenderer* renderer, jstring text, jint start, jint end,
463        jfloat x, jfloat y, jint flags, SkPaint* paint) {
464    const jchar* textArray = env->GetStringChars(text, NULL);
465    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
466    env->ReleaseStringChars(text, textArray);
467}
468
469static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
470        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
471        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
472        SkPaint* paint) {
473    jchar* textArray = env->GetCharArrayElements(text, NULL);
474    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
475            count, contextCount, x, y, dirFlags, paint);
476    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
477 }
478
479static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
480        OpenGLRenderer* renderer, jstring text, jint start, jint end,
481        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
482        SkPaint* paint) {
483    const jchar* textArray = env->GetStringChars(text, NULL);
484    jint count = end - start;
485    jint contextCount = contextEnd - contextStart;
486    renderTextRun(renderer, textArray + contextStart, start - contextStart,
487            count, contextCount, x, y, dirFlags, paint);
488    env->ReleaseStringChars(text, textArray);
489}
490
491// ----------------------------------------------------------------------------
492// Display lists
493// ----------------------------------------------------------------------------
494
495static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
496        jobject clazz, DisplayListRenderer* renderer) {
497    return renderer->getDisplayList();
498}
499
500static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
501        jobject clazz, DisplayListRenderer* renderer) {
502    if (renderer == NULL) {
503        renderer = new DisplayListRenderer;
504    } else {
505        renderer->reset();
506    }
507    return renderer;
508}
509
510static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
511        jobject clazz, DisplayList* displayList) {
512    delete displayList;
513}
514
515static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
516        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
517    return renderer->drawDisplayList(displayList);
518}
519
520// ----------------------------------------------------------------------------
521// Layers
522// ----------------------------------------------------------------------------
523
524static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
525        OpenGLRenderer* renderer) {
526    renderer->interrupt();
527}
528
529static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
530        OpenGLRenderer* renderer) {
531    renderer->resume();
532}
533
534static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
535        jobject clazz, Layer* layer) {
536    if (layer) {
537        return new LayerRenderer(layer);
538    }
539    return NULL;
540}
541
542static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
543        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
544    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
545
546    if (layer) {
547        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
548        storage[0] = layer->width;
549        storage[1] = layer->height;
550        env->ReleaseIntArrayElements(layerInfo, storage, 0);
551    }
552
553    return layer;
554}
555
556static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
557        Layer* layer, jint width, jint height, jintArray layerInfo) {
558    LayerRenderer::resizeLayer(layer, width, height);
559
560    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
561    storage[0] = layer->width;
562    storage[1] = layer->height;
563    env->ReleaseIntArrayElements(layerInfo, storage, 0);
564}
565
566static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
567    LayerRenderer::destroyLayer(layer);
568}
569
570static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
571        jobject clazz, Layer* layer) {
572    LayerRenderer::destroyLayerDeferred(layer);
573}
574
575static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
576        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
577    renderer->drawLayer(layer, x, y, paint);
578}
579
580#endif // USE_OPENGL_RENDERER
581
582// ----------------------------------------------------------------------------
583// Common
584// ----------------------------------------------------------------------------
585
586static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
587#ifdef USE_OPENGL_RENDERER
588    return JNI_TRUE;
589#else
590    return JNI_FALSE;
591#endif
592}
593
594// ----------------------------------------------------------------------------
595// JNI Glue
596// ----------------------------------------------------------------------------
597
598const char* const kClassPathName = "android/view/GLES20Canvas";
599
600static JNINativeMethod gMethods[] = {
601    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
602
603#ifdef USE_OPENGL_RENDERER
604    { "nPreserveBackBuffer", "()Z",            (void*) android_view_GLES20Canvas_preserveBackBuffer },
605
606    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
607    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
608    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
609    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
610    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
611    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
612    { "nAcquireContext",    "(I)V",            (void*) android_view_GLES20Canvas_acquireContext },
613    { "nReleaseContext",    "(I)V",            (void*) android_view_GLES20Canvas_releaseContext },
614
615    { "nCallDrawGLFunction", "(II)Z",
616            (void*) android_view_GLES20Canvas_callDrawGLFunction },
617
618    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
619    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
620    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
621    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
622
623    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
624    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
625
626    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
627    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
628    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
629
630    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
631    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
632    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
633    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
634
635    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
636    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
637    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
638    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
639
640    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
641    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
642    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
643
644    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
645
646    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
647
648    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
649    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
650    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
651    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
652    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
653    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
654    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
655
656    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
657    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
658
659    { "nResetModifiers",    "(I)V",            (void*) android_view_GLES20Canvas_resetModifiers },
660    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
661    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
662    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
663
664    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
665    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
666            (void*) android_view_GLES20Canvas_drawText },
667
668    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
669    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
670            (void*) android_view_GLES20Canvas_drawTextRun },
671
672    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
673            (void*) android_view_GLES20Canvas_getClipBounds },
674
675    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
676    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
677    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
678    { "nDrawDisplayList",        "(II)Z",      (void*) android_view_GLES20Canvas_drawDisplayList },
679
680    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
681    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
682
683    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
684    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
685    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
686    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
687    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
688    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
689
690#endif
691};
692
693#ifdef USE_OPENGL_RENDERER
694    #define FIND_CLASS(var, className) \
695            var = env->FindClass(className); \
696            LOG_FATAL_IF(! var, "Unable to find class " className); \
697            var = jclass(env->NewGlobalRef(var));
698
699    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
700            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
701            LOG_FATAL_IF(! var, "Unable to find method " methodName);
702#else
703    #define FIND_CLASS(var, className)
704    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
705#endif
706
707int register_android_view_GLES20Canvas(JNIEnv* env) {
708    FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect");
709    GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V");
710
711    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
712}
713
714};
715