android_view_GLES20Canvas.cpp revision cabfcc1364eb7e4de0b15b3574fba45027b45cfc 
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 <OpenGLRenderer.h>
39#include <SkiaShader.h>
40#include <SkiaColorFilter.h>
41#include <Rect.h>
42
43#include "TextLayout.h"
44
45namespace android {
46
47using namespace uirenderer;
48
49/**
50 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
51 *       devices. This means all the logic must be compiled only when the
52 *       preprocessor variable USE_OPENGL_RENDERER is defined.
53 */
54#ifdef USE_OPENGL_RENDERER
55
56///////////////////////////////////////////////////////////////////////////////
57// Defines
58///////////////////////////////////////////////////////////////////////////////
59
60// Debug
61#define DEBUG_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// Misc
79// ----------------------------------------------------------------------------
80
81static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
82    EGLDisplay display = eglGetCurrentDisplay();
83    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
84
85    eglGetError();
86    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
87
88    EGLint error = eglGetError();
89    RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
90
91    return error == EGL_SUCCESS;
92}
93
94// ----------------------------------------------------------------------------
95// Constructors
96// ----------------------------------------------------------------------------
97
98static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
99    RENDERER_LOGD("Create OpenGLRenderer");
100    return new OpenGLRenderer;
101}
102
103static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
104        OpenGLRenderer* renderer) {
105    RENDERER_LOGD("Destroy OpenGLRenderer");
106    delete renderer;
107}
108
109// ----------------------------------------------------------------------------
110// Setup
111// ----------------------------------------------------------------------------
112
113static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
114        OpenGLRenderer* renderer, jint width, jint height) {
115    renderer->setViewport(width, height);
116}
117
118static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
119        OpenGLRenderer* renderer, jboolean opaque) {
120    renderer->prepare(opaque);
121}
122
123static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
124        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
125        jboolean opaque) {
126    renderer->prepareDirty(left, top, right, bottom, opaque);
127}
128
129static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
130        OpenGLRenderer* renderer) {
131    renderer->finish();
132}
133
134static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
135        OpenGLRenderer* renderer, Functor *functor) {
136    android::uirenderer::Rect dirty;
137    return renderer->callDrawGLFunction(functor, dirty);
138}
139
140// ----------------------------------------------------------------------------
141// State
142// ----------------------------------------------------------------------------
143
144static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
145        jint flags) {
146    return renderer->save(flags);
147}
148
149static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
150        OpenGLRenderer* renderer) {
151    return renderer->getSaveCount();
152}
153
154static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
155        OpenGLRenderer* renderer) {
156    renderer->restore();
157}
158
159static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
160        OpenGLRenderer* renderer, jint saveCount) {
161    renderer->restoreToCount(saveCount);
162}
163
164// ----------------------------------------------------------------------------
165// Layers
166// ----------------------------------------------------------------------------
167
168static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
169        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
170        SkPaint* paint, jint saveFlags) {
171    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
172}
173
174static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
175        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
176        jint alpha, jint saveFlags) {
177    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
178}
179
180// ----------------------------------------------------------------------------
181// Clipping
182// ----------------------------------------------------------------------------
183
184static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
185        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
186        SkCanvas::EdgeType edge) {
187    return renderer->quickReject(left, top, right, bottom);
188}
189
190static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
191        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
192        SkRegion::Op op) {
193    return renderer->clipRect(left, top, right, bottom, op);
194}
195
196static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
197        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
198        SkRegion::Op op) {
199    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
200}
201
202static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
203        OpenGLRenderer* renderer, jobject rect) {
204    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
205
206    env->CallVoidMethod(rect, gRectClassInfo.set,
207            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
208
209    return !bounds.isEmpty();
210}
211
212// ----------------------------------------------------------------------------
213// Transforms
214// ----------------------------------------------------------------------------
215
216static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
217        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
218    renderer->translate(dx, dy);
219}
220
221static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
222        OpenGLRenderer* renderer, jfloat degrees) {
223    renderer->rotate(degrees);
224}
225
226static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
227        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
228    renderer->scale(sx, sy);
229}
230
231static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
232        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
233    renderer->skew(sx, sy);
234}
235
236static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
237        OpenGLRenderer* renderer, SkMatrix* matrix) {
238    renderer->setMatrix(matrix);
239}
240
241static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
242        jobject clazz, OpenGLRenderer* renderer) {
243    return renderer->getMatrix();
244}
245
246static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
247        OpenGLRenderer* renderer, SkMatrix* matrix) {
248    renderer->getMatrix(matrix);
249}
250
251static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
252        OpenGLRenderer* renderer, SkMatrix* matrix) {
253    renderer->concatMatrix(matrix);
254}
255
256// ----------------------------------------------------------------------------
257// Drawing
258// ----------------------------------------------------------------------------
259
260static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
261        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
262        float top, 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, left, top, paint);
267}
268
269static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
270        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
271        float srcLeft, float srcTop, float srcRight, float srcBottom,
272        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
273    // This object allows the renderer to allocate a global JNI ref to the buffer object.
274    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
275
276    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
277            dstLeft, dstTop, dstRight, dstBottom, paint);
278}
279
280static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
281        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
282        SkPaint* paint) {
283    // This object allows the renderer to allocate a global JNI ref to the buffer object.
284    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
285
286    renderer->drawBitmap(bitmap, matrix, paint);
287}
288
289static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
290        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
291        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
292        jintArray colors, jint colorOffset, SkPaint* paint) {
293    // This object allows the renderer to allocate a global JNI ref to the buffer object.
294    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
295
296    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
297    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
298
299    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
300
301    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
302    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
303}
304
305static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
306        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
307        float left, float top, float right, float bottom, 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    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
312    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
313    Res_png_9patch::deserialize(patch);
314
315    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
316            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
317            left, top, right, bottom, paint);
318
319    env->ReleaseByteArrayElements(chunks, storage, 0);
320}
321
322static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
323        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
324    renderer->drawColor(color, mode);
325}
326
327static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
328        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
329        SkPaint* paint) {
330    renderer->drawRect(left, top, right, bottom, paint);
331}
332
333static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
334        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
335        jfloat rx, jfloat ry, SkPaint* paint) {
336    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
337}
338
339static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
340        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
341    renderer->drawCircle(x, y, radius, paint);
342}
343
344static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
345        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
346        SkPaint* paint) {
347    renderer->drawOval(left, top, right, bottom, paint);
348}
349
350static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
351        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
352        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
353    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
354}
355
356static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
357        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
358    SkRegion::Iterator it(*region);
359    while (!it.done()) {
360        const SkIRect& r = it.rect();
361        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
362        it.next();
363    }
364}
365
366static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
367        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
368    renderer->drawPath(path, paint);
369}
370
371static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
372        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
373    jfloat* storage = env->GetFloatArrayElements(points, NULL);
374
375    renderer->drawLines(storage + offset, count, paint);
376
377    env->ReleaseFloatArrayElements(points, storage, 0);
378}
379
380// ----------------------------------------------------------------------------
381// Shaders and color filters
382// ----------------------------------------------------------------------------
383
384static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
385        OpenGLRenderer* renderer) {
386    renderer->resetShader();
387    renderer->resetColorFilter();
388    renderer->resetShadow();
389}
390
391static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
392        OpenGLRenderer* renderer, SkiaShader* shader) {
393    renderer->setupShader(shader);
394}
395
396static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
397        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
398    renderer->setupColorFilter(filter);
399}
400
401static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
402        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
403    renderer->setupShadow(radius, dx, dy, color);
404}
405
406// ----------------------------------------------------------------------------
407// Text
408// ----------------------------------------------------------------------------
409
410static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
411        jfloat x, jfloat y, int flags, SkPaint* paint) {
412    const jchar *workText;
413    jchar* buffer = NULL;
414    int32_t workBytes;
415    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
416        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
417        free(buffer);
418    }
419}
420
421static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
422        jint start, jint count, jint contextCount, jfloat x, jfloat y,
423        int flags, SkPaint* paint) {
424    uint8_t rtl = flags & 0x1;
425    if (rtl) {
426        SkAutoSTMalloc<80, jchar> buffer(contextCount);
427        jchar* shaped = buffer.get();
428        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
429            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
430        } else {
431            LOGW("drawTextRun error");
432        }
433    } else {
434        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
435    }
436}
437
438static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
439        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
440        jfloat x, jfloat y, jint flags, SkPaint* paint) {
441    jchar* textArray = env->GetCharArrayElements(text, NULL);
442    renderText(renderer, textArray + index, count, x, y, flags, paint);
443    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
444}
445
446static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
447        OpenGLRenderer* renderer, jstring text, jint start, jint end,
448        jfloat x, jfloat y, jint flags, SkPaint* paint) {
449    const jchar* textArray = env->GetStringChars(text, NULL);
450    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
451    env->ReleaseStringChars(text, textArray);
452}
453
454static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
455        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
456        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
457        SkPaint* paint) {
458    jchar* textArray = env->GetCharArrayElements(text, NULL);
459    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
460            count, contextCount, x, y, dirFlags, paint);
461    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
462 }
463
464static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
465        OpenGLRenderer* renderer, jstring text, jint start, jint end,
466        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
467        SkPaint* paint) {
468    const jchar* textArray = env->GetStringChars(text, NULL);
469    jint count = end - start;
470    jint contextCount = contextEnd - contextStart;
471    renderTextRun(renderer, textArray + contextStart, start - contextStart,
472            count, contextCount, x, y, dirFlags, paint);
473    env->ReleaseStringChars(text, textArray);
474}
475
476// ----------------------------------------------------------------------------
477// Display lists
478// ----------------------------------------------------------------------------
479
480static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
481        jobject clazz, DisplayListRenderer* renderer) {
482    return renderer->getDisplayList();
483}
484
485static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
486        jobject clazz, DisplayListRenderer* renderer) {
487    if (renderer == NULL) {
488        renderer = new DisplayListRenderer;
489    } else {
490        renderer->reset();
491    }
492    return renderer;
493}
494
495static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
496        jobject clazz, DisplayList* displayList) {
497    delete displayList;
498}
499
500static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
501        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList, jobject dirty) {
502    android::uirenderer::Rect bounds;
503    bool redraw = renderer->drawDisplayList(displayList, bounds);
504    if (redraw && dirty != NULL) {
505        env->CallVoidMethod(dirty, gRectClassInfo.set,
506                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
507    }
508    return redraw;
509}
510
511// ----------------------------------------------------------------------------
512// Layers
513// ----------------------------------------------------------------------------
514
515static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
516        OpenGLRenderer* renderer) {
517    renderer->interrupt();
518}
519
520static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
521        OpenGLRenderer* renderer) {
522    renderer->resume();
523}
524
525static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
526        jobject clazz, Layer* layer) {
527    if (layer) {
528        return new LayerRenderer(layer);
529    }
530    return NULL;
531}
532
533static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
534        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
535    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
536
537    if (layer) {
538        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
539        storage[0] = layer->width;
540        storage[1] = layer->height;
541        env->ReleaseIntArrayElements(layerInfo, storage, 0);
542    }
543
544    return layer;
545}
546
547static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
548        Layer* layer, jint width, jint height, jintArray layerInfo) {
549    LayerRenderer::resizeLayer(layer, width, height);
550
551    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
552    storage[0] = layer->width;
553    storage[1] = layer->height;
554    env->ReleaseIntArrayElements(layerInfo, storage, 0);
555}
556
557static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
558    LayerRenderer::destroyLayer(layer);
559}
560
561static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
562        jobject clazz, Layer* layer) {
563    LayerRenderer::destroyLayerDeferred(layer);
564}
565
566static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
567        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
568    renderer->drawLayer(layer, x, y, paint);
569}
570
571#endif // USE_OPENGL_RENDERER
572
573// ----------------------------------------------------------------------------
574// Common
575// ----------------------------------------------------------------------------
576
577static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
578#ifdef USE_OPENGL_RENDERER
579    return JNI_TRUE;
580#else
581    return JNI_FALSE;
582#endif
583}
584
585// ----------------------------------------------------------------------------
586// JNI Glue
587// ----------------------------------------------------------------------------
588
589const char* const kClassPathName = "android/view/GLES20Canvas";
590
591static JNINativeMethod gMethods[] = {
592    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
593
594#ifdef USE_OPENGL_RENDERER
595    { "nPreserveBackBuffer", "()Z",            (void*) android_view_GLES20Canvas_preserveBackBuffer },
596
597    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
598    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
599    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
600    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
601    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
602    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
603
604    { "nCallDrawGLFunction", "(II)Z",
605            (void*) android_view_GLES20Canvas_callDrawGLFunction },
606
607    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
608    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
609    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
610    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
611
612    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
613    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
614
615    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
616    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
617    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
618
619    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
620    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
621    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
622    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
623
624    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
625    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
626    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
627    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
628
629    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
630    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
631    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
632
633    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
634
635    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
636
637    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
638    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
639    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
640    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
641    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
642    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
643    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
644
645    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
646    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
647
648    { "nResetModifiers",    "(I)V",            (void*) android_view_GLES20Canvas_resetModifiers },
649    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
650    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
651    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
652
653    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
654    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
655            (void*) android_view_GLES20Canvas_drawText },
656
657    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
658    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
659            (void*) android_view_GLES20Canvas_drawTextRun },
660
661    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
662            (void*) android_view_GLES20Canvas_getClipBounds },
663
664    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
665    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
666    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
667    { "nDrawDisplayList",        "(IILandroid/graphics/Rect;)Z",
668                                               (void*) android_view_GLES20Canvas_drawDisplayList },
669
670    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
671    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
672
673    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
674    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
675    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
676    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
677    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
678    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
679
680#endif
681};
682
683#ifdef USE_OPENGL_RENDERER
684    #define FIND_CLASS(var, className) \
685            var = env->FindClass(className); \
686            LOG_FATAL_IF(! var, "Unable to find class " className); \
687            var = jclass(env->NewGlobalRef(var));
688
689    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
690            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
691            LOG_FATAL_IF(! var, "Unable to find method " methodName);
692#else
693    #define FIND_CLASS(var, className)
694    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
695#endif
696
697int register_android_view_GLES20Canvas(JNIEnv* env) {
698    FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect");
699    GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V");
700
701    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
702}
703
704};
705