android_view_GLES20Canvas.cpp revision 6f7d9394ec69e9fb38ca5fc2caf6d2aef6f7442d 
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    if (error != EGL_SUCCESS) {
95        RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
96    }
97
98    return error == EGL_SUCCESS;
99}
100
101static jboolean android_view_GLES20Canvas_isBackBufferPreserved(JNIEnv* env, jobject clazz) {
102    EGLDisplay display = eglGetCurrentDisplay();
103    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
104    EGLint value;
105
106    eglGetError();
107    eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value);
108
109    EGLint error = eglGetError();
110    if (error != EGL_SUCCESS) {
111        RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error);
112    }
113
114    return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED;
115}
116
117// ----------------------------------------------------------------------------
118// Constructors
119// ----------------------------------------------------------------------------
120
121static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
122    RENDERER_LOGD("Create OpenGLRenderer");
123    return new OpenGLRenderer;
124}
125
126static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
127        OpenGLRenderer* renderer) {
128    RENDERER_LOGD("Destroy OpenGLRenderer");
129    delete renderer;
130}
131
132// ----------------------------------------------------------------------------
133// Setup
134// ----------------------------------------------------------------------------
135
136static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
137        OpenGLRenderer* renderer, jint width, jint height) {
138    renderer->setViewport(width, height);
139}
140
141static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
142        OpenGLRenderer* renderer, jboolean opaque) {
143    renderer->prepare(opaque);
144}
145
146static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
147        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
148        jboolean opaque) {
149    renderer->prepareDirty(left, top, right, bottom, opaque);
150}
151
152static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
153        OpenGLRenderer* renderer) {
154    renderer->finish();
155}
156
157static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
158        OpenGLRenderer* renderer, Functor *functor) {
159    android::uirenderer::Rect dirty;
160    return renderer->callDrawGLFunction(functor, dirty);
161}
162
163// ----------------------------------------------------------------------------
164// State
165// ----------------------------------------------------------------------------
166
167static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
168        jint flags) {
169    return renderer->save(flags);
170}
171
172static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
173        OpenGLRenderer* renderer) {
174    return renderer->getSaveCount();
175}
176
177static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
178        OpenGLRenderer* renderer) {
179    renderer->restore();
180}
181
182static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
183        OpenGLRenderer* renderer, jint saveCount) {
184    renderer->restoreToCount(saveCount);
185}
186
187// ----------------------------------------------------------------------------
188// Layers
189// ----------------------------------------------------------------------------
190
191static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
192        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
193        SkPaint* paint, jint saveFlags) {
194    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
195}
196
197static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
198        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
199        jint alpha, jint saveFlags) {
200    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
201}
202
203// ----------------------------------------------------------------------------
204// Clipping
205// ----------------------------------------------------------------------------
206
207static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
208        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
209        SkCanvas::EdgeType edge) {
210    return renderer->quickReject(left, top, right, bottom);
211}
212
213static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
214        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
215        SkRegion::Op op) {
216    return renderer->clipRect(left, top, right, bottom, op);
217}
218
219static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
220        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
221        SkRegion::Op op) {
222    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
223}
224
225static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
226        OpenGLRenderer* renderer, jobject rect) {
227    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
228
229    env->CallVoidMethod(rect, gRectClassInfo.set,
230            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
231
232    return !bounds.isEmpty();
233}
234
235// ----------------------------------------------------------------------------
236// Transforms
237// ----------------------------------------------------------------------------
238
239static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
240        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
241    renderer->translate(dx, dy);
242}
243
244static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
245        OpenGLRenderer* renderer, jfloat degrees) {
246    renderer->rotate(degrees);
247}
248
249static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
250        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
251    renderer->scale(sx, sy);
252}
253
254static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
255        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
256    renderer->skew(sx, sy);
257}
258
259static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
260        OpenGLRenderer* renderer, SkMatrix* matrix) {
261    renderer->setMatrix(matrix);
262}
263
264static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
265        jobject clazz, OpenGLRenderer* renderer) {
266    return renderer->getMatrix();
267}
268
269static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
270        OpenGLRenderer* renderer, SkMatrix* matrix) {
271    renderer->getMatrix(matrix);
272}
273
274static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
275        OpenGLRenderer* renderer, SkMatrix* matrix) {
276    renderer->concatMatrix(matrix);
277}
278
279// ----------------------------------------------------------------------------
280// Drawing
281// ----------------------------------------------------------------------------
282
283static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
284        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
285        float top, SkPaint* paint) {
286    // This object allows the renderer to allocate a global JNI ref to the buffer object.
287    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
288
289    renderer->drawBitmap(bitmap, left, top, paint);
290}
291
292static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
293        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
294        float srcLeft, float srcTop, float srcRight, float srcBottom,
295        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
296    // This object allows the renderer to allocate a global JNI ref to the buffer object.
297    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
298
299    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
300            dstLeft, dstTop, dstRight, dstBottom, paint);
301}
302
303static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
304        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
305        SkPaint* paint) {
306    // This object allows the renderer to allocate a global JNI ref to the buffer object.
307    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
308
309    renderer->drawBitmap(bitmap, matrix, paint);
310}
311
312static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
313        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
314        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
315        jintArray colors, jint colorOffset, SkPaint* paint) {
316    // This object allows the renderer to allocate a global JNI ref to the buffer object.
317    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
318
319    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
320    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
321
322    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
323
324    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
325    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
326}
327
328static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
329        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
330        float left, float top, float right, float bottom, SkPaint* paint) {
331    // This object allows the renderer to allocate a global JNI ref to the buffer object.
332    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
333
334    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
335    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
336    Res_png_9patch::deserialize(patch);
337
338    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
339            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
340            left, top, right, bottom, paint);
341
342    env->ReleaseByteArrayElements(chunks, storage, 0);
343}
344
345static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
346        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
347    renderer->drawColor(color, mode);
348}
349
350static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
351        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
352        SkPaint* paint) {
353    renderer->drawRect(left, top, right, bottom, paint);
354}
355
356static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
357        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
358        jfloat rx, jfloat ry, SkPaint* paint) {
359    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
360}
361
362static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
363        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
364    renderer->drawCircle(x, y, radius, paint);
365}
366
367static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
368        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
369        SkPaint* paint) {
370    renderer->drawOval(left, top, right, bottom, paint);
371}
372
373static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
374        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
375        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
376    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
377}
378
379static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
380        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
381    SkRegion::Iterator it(*region);
382    while (!it.done()) {
383        const SkIRect& r = it.rect();
384        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
385        it.next();
386    }
387}
388
389static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
390        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
391    jfloat* storage = env->GetFloatArrayElements(points, NULL);
392    renderer->drawPoints(storage + offset, count, paint);
393    env->ReleaseFloatArrayElements(points, storage, 0);
394}
395
396static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
397        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
398    renderer->drawPath(path, paint);
399}
400
401static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
402        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
403    jfloat* storage = env->GetFloatArrayElements(points, NULL);
404    renderer->drawLines(storage + offset, count, paint);
405    env->ReleaseFloatArrayElements(points, storage, 0);
406}
407
408// ----------------------------------------------------------------------------
409// Shaders and color filters
410// ----------------------------------------------------------------------------
411
412static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
413        OpenGLRenderer* renderer, jint modifiers) {
414    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
415    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
416    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
417}
418
419static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
420        OpenGLRenderer* renderer, SkiaShader* shader) {
421    renderer->setupShader(shader);
422}
423
424static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
425        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
426    renderer->setupColorFilter(filter);
427}
428
429static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
430        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
431    renderer->setupShadow(radius, dx, dy, color);
432}
433
434// ----------------------------------------------------------------------------
435// Text
436// ----------------------------------------------------------------------------
437
438static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
439        jfloat x, jfloat y, int flags, SkPaint* paint) {
440#if RTL_USE_HARFBUZZ
441    sp<TextLayoutCacheValue> value = gTextLayoutCache.getValue(
442            paint, text, 0, count, count, flags);
443    if (value == NULL) {
444        LOGE("Cannot get TextLayoutCache value");
445        return ;
446    }
447#if DEBUG_GLYPHS
448    logGlyphs(value);
449#endif
450    const jchar* glyphArray = value->getGlyphs();
451    int glyphCount = value->getGlyphsCount();
452    int bytesCount = glyphCount * sizeof(jchar);
453    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
454#else
455    const jchar *workText;
456    jchar* buffer = NULL;
457    int32_t workBytes;
458    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
459        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
460        free(buffer);
461    }
462#endif
463}
464
465static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
466        jint start, jint count, jint contextCount, jfloat x, jfloat y,
467        int flags, SkPaint* paint) {
468#if RTL_USE_HARFBUZZ
469    sp<TextLayoutCacheValue> value = gTextLayoutCache.getValue(
470            paint, text, start, count, contextCount, flags);
471    if (value == NULL) {
472        LOGE("Cannot get TextLayoutCache value");
473        return ;
474    }
475#if DEBUG_GLYPHS
476    logGlyphs(value);
477#endif
478    const jchar* glyphArray = value->getGlyphs();
479    int glyphCount = value->getGlyphsCount();
480    int bytesCount = glyphCount * sizeof(jchar);
481    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
482#else
483    uint8_t rtl = flags & 0x1;
484    if (rtl) {
485        SkAutoSTMalloc<80, jchar> buffer(contextCount);
486        jchar* shaped = buffer.get();
487        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
488            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
489        } else {
490            LOGW("drawTextRun error");
491        }
492    } else {
493        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
494    }
495#endif
496}
497
498static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
499        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
500        jfloat x, jfloat y, jint flags, SkPaint* paint) {
501    jchar* textArray = env->GetCharArrayElements(text, NULL);
502    renderText(renderer, textArray + index, count, x, y, flags, paint);
503    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
504}
505
506static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
507        OpenGLRenderer* renderer, jstring text, jint start, jint end,
508        jfloat x, jfloat y, jint flags, SkPaint* paint) {
509    const jchar* textArray = env->GetStringChars(text, NULL);
510    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
511    env->ReleaseStringChars(text, textArray);
512}
513
514static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
515        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
516        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
517        SkPaint* paint) {
518    jchar* textArray = env->GetCharArrayElements(text, NULL);
519    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
520            count, contextCount, x, y, dirFlags, paint);
521    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
522 }
523
524static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
525        OpenGLRenderer* renderer, jstring text, jint start, jint end,
526        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
527        SkPaint* paint) {
528    const jchar* textArray = env->GetStringChars(text, NULL);
529    jint count = end - start;
530    jint contextCount = contextEnd - contextStart;
531    renderTextRun(renderer, textArray + contextStart, start - contextStart,
532            count, contextCount, x, y, dirFlags, paint);
533    env->ReleaseStringChars(text, textArray);
534}
535
536// ----------------------------------------------------------------------------
537// Display lists
538// ----------------------------------------------------------------------------
539
540static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
541        jobject clazz, DisplayListRenderer* renderer) {
542    return renderer->getDisplayList();
543}
544
545static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
546        jobject clazz, DisplayListRenderer* renderer) {
547    if (renderer == NULL) {
548        renderer = new DisplayListRenderer;
549    } else {
550        renderer->reset();
551    }
552    return renderer;
553}
554
555static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
556        jobject clazz, DisplayList* displayList) {
557    delete displayList;
558}
559
560static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
561        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
562        jint width, jint height, jobject dirty) {
563    android::uirenderer::Rect bounds;
564    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
565    if (redraw && dirty != NULL) {
566        env->CallVoidMethod(dirty, gRectClassInfo.set,
567                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
568    }
569    return redraw;
570}
571
572static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
573        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
574    renderer->outputDisplayList(displayList);
575}
576
577// ----------------------------------------------------------------------------
578// Layers
579// ----------------------------------------------------------------------------
580
581static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
582        OpenGLRenderer* renderer) {
583    renderer->interrupt();
584}
585
586static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
587        OpenGLRenderer* renderer) {
588    renderer->resume();
589}
590
591static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
592        jobject clazz, Layer* layer) {
593    if (layer) {
594        return new LayerRenderer(layer);
595    }
596    return NULL;
597}
598
599static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
600        jintArray layerInfo) {
601    Layer* layer = LayerRenderer::createTextureLayer();
602
603    if (layer) {
604        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
605        storage[0] = layer->texture;
606        env->ReleaseIntArrayElements(layerInfo, storage, 0);
607    }
608
609    return layer;
610}
611
612static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
613        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
614    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
615
616    if (layer) {
617        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
618        storage[0] = layer->width;
619        storage[1] = layer->height;
620        env->ReleaseIntArrayElements(layerInfo, storage, 0);
621    }
622
623    return layer;
624}
625
626static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
627        Layer* layer, jint width, jint height, jintArray layerInfo) {
628    LayerRenderer::resizeLayer(layer, width, height);
629
630    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
631    storage[0] = layer->width;
632    storage[1] = layer->height;
633    env->ReleaseIntArrayElements(layerInfo, storage, 0);
634}
635
636static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
637        Layer* layer, jint width, jint height, SurfaceTexture* surface) {
638    float transform[16];
639    surface->updateTexImage();
640    surface->getTransformMatrix(transform);
641    GLenum renderTarget = surface->getCurrentTextureTarget();
642
643    LayerRenderer::updateTextureLayer(layer, width, height, renderTarget, transform);
644}
645
646static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
647    LayerRenderer::destroyLayer(layer);
648}
649
650static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
651        jobject clazz, Layer* layer) {
652    LayerRenderer::destroyLayerDeferred(layer);
653}
654
655static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
656        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
657    renderer->drawLayer(layer, x, y, paint);
658}
659
660#endif // USE_OPENGL_RENDERER
661
662// ----------------------------------------------------------------------------
663// Common
664// ----------------------------------------------------------------------------
665
666static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
667#ifdef USE_OPENGL_RENDERER
668    return JNI_TRUE;
669#else
670    return JNI_FALSE;
671#endif
672}
673
674// ----------------------------------------------------------------------------
675// Logging
676// ----------------------------------------------------------------------------
677
678static void
679android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor)
680{
681#ifdef USE_OPENGL_RENDERER
682    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
683    android::uirenderer::DisplayList::outputLogBuffer(fd);
684#endif // USE_OPENGL_RENDERER
685}
686
687// ----------------------------------------------------------------------------
688// JNI Glue
689// ----------------------------------------------------------------------------
690
691const char* const kClassPathName = "android/view/GLES20Canvas";
692
693static JNINativeMethod gMethods[] = {
694    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
695
696#ifdef USE_OPENGL_RENDERER
697    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
698    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
699
700    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
701    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
702    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
703    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
704    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
705    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
706
707    { "nCallDrawGLFunction", "(II)Z",
708            (void*) android_view_GLES20Canvas_callDrawGLFunction },
709
710    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
711    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
712    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
713    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
714
715    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
716    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
717
718    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
719    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
720    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
721
722    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
723    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
724    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
725    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
726
727    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
728    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
729    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
730    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
731
732    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
733    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
734    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
735
736    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
737
738    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
739
740    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
741    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
742    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
743    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
744    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
745    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
746    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
747    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
748
749    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
750    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
751
752    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
753    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
754    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
755    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
756
757    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
758    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
759            (void*) android_view_GLES20Canvas_drawText },
760
761    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
762    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
763            (void*) android_view_GLES20Canvas_drawTextRun },
764
765    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
766            (void*) android_view_GLES20Canvas_getClipBounds },
767
768    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
769    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
770    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
771    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
772                                               (void*) android_view_GLES20Canvas_drawDisplayList },
773    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
774    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
775    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
776
777    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
778    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
779    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
780    { "nCreateTextureLayer",     "([I)I",      (void*) android_view_GLES20Canvas_createTextureLayer },
781    { "nUpdateTextureLayer",     "(IIII)V",    (void*) android_view_GLES20Canvas_updateTextureLayer },
782    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
783    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
784    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
785
786#endif
787};
788
789static JNINativeMethod gActivityThreadMethods[] = {
790    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
791                                               (void*) android_app_ActivityThread_dumpGraphics }
792};
793
794
795#ifdef USE_OPENGL_RENDERER
796    #define FIND_CLASS(var, className) \
797            var = env->FindClass(className); \
798            LOG_FATAL_IF(! var, "Unable to find class " className);
799
800    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
801            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
802            LOG_FATAL_IF(! var, "Unable to find method " methodName);
803#else
804    #define FIND_CLASS(var, className)
805    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
806#endif
807
808int register_android_view_GLES20Canvas(JNIEnv* env) {
809    jclass clazz;
810    FIND_CLASS(clazz, "android/graphics/Rect");
811    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
812
813    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
814}
815
816const char* const kActivityThreadPathName = "android/app/ActivityThread";
817
818int register_android_app_ActivityThread(JNIEnv* env)
819{
820    return AndroidRuntime::registerNativeMethods(
821            env, kActivityThreadPathName,
822            gActivityThreadMethods, NELEM(gActivityThreadMethods));
823}
824
825};
826