android_view_GLES20Canvas.cpp revision 067bb3b44357e09628ae63a8e7cf27f93b811b84 
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 <android_runtime/android_graphics_SurfaceTexture.h>
26#include <utils/ResourceTypes.h>
27
28#include <gui/SurfaceTexture.h>
29
30#include <SkBitmap.h>
31#include <SkCanvas.h>
32#include <SkMatrix.h>
33#include <SkPaint.h>
34#include <SkRegion.h>
35#include <SkScalerContext.h>
36#include <SkTemplates.h>
37#include <SkXfermode.h>
38
39#include <DisplayListRenderer.h>
40#include <LayerRenderer.h>
41#include <OpenGLRenderer.h>
42#include <SkiaShader.h>
43#include <SkiaColorFilter.h>
44#include <Rect.h>
45
46#include <TextLayout.h>
47
48namespace android {
49
50using namespace uirenderer;
51
52/**
53 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
54 *       devices. This means all the logic must be compiled only when the
55 *       preprocessor variable USE_OPENGL_RENDERER is defined.
56 */
57#ifdef USE_OPENGL_RENDERER
58
59///////////////////////////////////////////////////////////////////////////////
60// Defines
61///////////////////////////////////////////////////////////////////////////////
62
63// Debug
64#define DEBUG_RENDERER 0
65
66// Debug
67#if DEBUG_RENDERER
68    #define RENDERER_LOGD(...) LOGD(__VA_ARGS__)
69#else
70    #define RENDERER_LOGD(...)
71#endif
72
73#define MODIFIER_SHADOW 1
74#define MODIFIER_SHADER 2
75#define MODIFIER_COLOR_FILTER 4
76
77// ----------------------------------------------------------------------------
78
79static struct {
80    jmethodID set;
81} gRectClassInfo;
82
83// ----------------------------------------------------------------------------
84// Misc
85// ----------------------------------------------------------------------------
86
87static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
88    EGLDisplay display = eglGetCurrentDisplay();
89    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
90
91    eglGetError();
92    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
93
94    EGLint error = eglGetError();
95    if (error != EGL_SUCCESS) {
96        RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
97    }
98
99    return error == EGL_SUCCESS;
100}
101
102static jboolean android_view_GLES20Canvas_isBackBufferPreserved(JNIEnv* env, jobject clazz) {
103    EGLDisplay display = eglGetCurrentDisplay();
104    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
105    EGLint value;
106
107    eglGetError();
108    eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value);
109
110    EGLint error = eglGetError();
111    if (error != EGL_SUCCESS) {
112        RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error);
113    }
114
115    return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED;
116}
117
118static void android_view_GLES20Canvas_disableVsync(JNIEnv* env, jobject clazz) {
119    EGLDisplay display = eglGetCurrentDisplay();
120
121    eglGetError();
122    eglSwapInterval(display, 0);
123
124    EGLint error = eglGetError();
125    if (error != EGL_SUCCESS) {
126        RENDERER_LOGD("Could not disable v-sync (%x)", error);
127    }
128}
129
130static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
131        Caches::FlushMode mode) {
132    if (Caches::hasInstance()) {
133        Caches::getInstance().flush(mode);
134    }
135}
136
137// ----------------------------------------------------------------------------
138// Constructors
139// ----------------------------------------------------------------------------
140
141static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
142    RENDERER_LOGD("Create OpenGLRenderer");
143    return new OpenGLRenderer;
144}
145
146static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
147        OpenGLRenderer* renderer) {
148    RENDERER_LOGD("Destroy OpenGLRenderer");
149    delete renderer;
150}
151
152// ----------------------------------------------------------------------------
153// Setup
154// ----------------------------------------------------------------------------
155
156static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
157        OpenGLRenderer* renderer, jint width, jint height) {
158    renderer->setViewport(width, height);
159}
160
161static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
162        OpenGLRenderer* renderer, jboolean opaque) {
163    renderer->prepare(opaque);
164}
165
166static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
167        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
168        jboolean opaque) {
169    renderer->prepareDirty(left, top, right, bottom, opaque);
170}
171
172static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
173        OpenGLRenderer* renderer) {
174    renderer->finish();
175}
176
177static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
178        OpenGLRenderer* renderer, Functor *functor) {
179    android::uirenderer::Rect dirty;
180    return renderer->callDrawGLFunction(functor, dirty);
181}
182
183static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
184    return Caches::getInstance().maxTextureSize;
185}
186
187static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
188    return Caches::getInstance().maxTextureSize;
189}
190
191// ----------------------------------------------------------------------------
192// State
193// ----------------------------------------------------------------------------
194
195static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
196        jint flags) {
197    return renderer->save(flags);
198}
199
200static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
201        OpenGLRenderer* renderer) {
202    return renderer->getSaveCount();
203}
204
205static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
206        OpenGLRenderer* renderer) {
207    renderer->restore();
208}
209
210static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
211        OpenGLRenderer* renderer, jint saveCount) {
212    renderer->restoreToCount(saveCount);
213}
214
215// ----------------------------------------------------------------------------
216// Layers
217// ----------------------------------------------------------------------------
218
219static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
220        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
221        SkPaint* paint, jint saveFlags) {
222    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
223}
224
225static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
226        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
227        jint alpha, jint saveFlags) {
228    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
229}
230
231// ----------------------------------------------------------------------------
232// Clipping
233// ----------------------------------------------------------------------------
234
235static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
236        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
237        SkCanvas::EdgeType edge) {
238    return renderer->quickReject(left, top, right, bottom);
239}
240
241static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
242        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
243        SkRegion::Op op) {
244    return renderer->clipRect(left, top, right, bottom, op);
245}
246
247static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
248        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
249        SkRegion::Op op) {
250    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
251}
252
253static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
254        OpenGLRenderer* renderer, jobject rect) {
255    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
256
257    env->CallVoidMethod(rect, gRectClassInfo.set,
258            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
259
260    return !bounds.isEmpty();
261}
262
263// ----------------------------------------------------------------------------
264// Transforms
265// ----------------------------------------------------------------------------
266
267static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
268        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
269    renderer->translate(dx, dy);
270}
271
272static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
273        OpenGLRenderer* renderer, jfloat degrees) {
274    renderer->rotate(degrees);
275}
276
277static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
278        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
279    renderer->scale(sx, sy);
280}
281
282static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
283        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
284    renderer->skew(sx, sy);
285}
286
287static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
288        OpenGLRenderer* renderer, SkMatrix* matrix) {
289    renderer->setMatrix(matrix);
290}
291
292static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
293        OpenGLRenderer* renderer, SkMatrix* matrix) {
294    renderer->getMatrix(matrix);
295}
296
297static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
298        OpenGLRenderer* renderer, SkMatrix* matrix) {
299    renderer->concatMatrix(matrix);
300}
301
302// ----------------------------------------------------------------------------
303// Drawing
304// ----------------------------------------------------------------------------
305
306static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
307        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
308        float top, SkPaint* paint) {
309    // This object allows the renderer to allocate a global JNI ref to the buffer object.
310    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
311
312    renderer->drawBitmap(bitmap, left, top, paint);
313}
314
315static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
316        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
317        float srcLeft, float srcTop, float srcRight, float srcBottom,
318        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
319    // This object allows the renderer to allocate a global JNI ref to the buffer object.
320    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
321
322    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
323            dstLeft, dstTop, dstRight, dstBottom, paint);
324}
325
326static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
327        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
328        SkPaint* paint) {
329    // This object allows the renderer to allocate a global JNI ref to the buffer object.
330    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
331
332    renderer->drawBitmap(bitmap, matrix, paint);
333}
334
335static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
336        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
337        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
338        jintArray colors, jint colorOffset, SkPaint* paint) {
339    // This object allows the renderer to allocate a global JNI ref to the buffer object.
340    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
341
342    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
343    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
344
345    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
346
347    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
348    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
349}
350
351static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
352        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
353        float left, float top, float right, float bottom, SkPaint* paint) {
354    // This object allows the renderer to allocate a global JNI ref to the buffer object.
355    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
356
357    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
358    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
359    Res_png_9patch::deserialize(patch);
360
361    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
362            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
363            left, top, right, bottom, paint);
364
365    env->ReleaseByteArrayElements(chunks, storage, 0);
366}
367
368static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
369        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
370    renderer->drawColor(color, mode);
371}
372
373static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
374        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
375        SkPaint* paint) {
376    renderer->drawRect(left, top, right, bottom, paint);
377}
378
379static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
380        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
381        jfloat rx, jfloat ry, SkPaint* paint) {
382    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
383}
384
385static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
386        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
387    renderer->drawCircle(x, y, radius, paint);
388}
389
390static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
391        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
392        SkPaint* paint) {
393    renderer->drawOval(left, top, right, bottom, paint);
394}
395
396static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
397        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
398        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
399    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
400}
401
402static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
403        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
404    SkRegion::Iterator it(*region);
405    while (!it.done()) {
406        const SkIRect& r = it.rect();
407        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
408        it.next();
409    }
410}
411
412static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
413        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
414    jfloat* storage = env->GetFloatArrayElements(points, NULL);
415    renderer->drawPoints(storage + offset, count, paint);
416    env->ReleaseFloatArrayElements(points, storage, 0);
417}
418
419static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
420        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
421    renderer->drawPath(path, paint);
422}
423
424static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
425        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
426    jfloat* storage = env->GetFloatArrayElements(points, NULL);
427    renderer->drawLines(storage + offset, count, paint);
428    env->ReleaseFloatArrayElements(points, storage, 0);
429}
430
431// ----------------------------------------------------------------------------
432// Shaders and color filters
433// ----------------------------------------------------------------------------
434
435static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
436        OpenGLRenderer* renderer, jint modifiers) {
437    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
438    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
439    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
440}
441
442static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
443        OpenGLRenderer* renderer, SkiaShader* shader) {
444    renderer->setupShader(shader);
445}
446
447static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
448        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
449    renderer->setupColorFilter(filter);
450}
451
452static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
453        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
454    renderer->setupShadow(radius, dx, dy, color);
455}
456
457// ----------------------------------------------------------------------------
458// Text
459// ----------------------------------------------------------------------------
460
461static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
462        jfloat x, jfloat y, int flags, SkPaint* paint) {
463#if RTL_USE_HARFBUZZ
464    sp<TextLayoutCacheValue> value;
465#if USE_TEXT_LAYOUT_CACHE
466    value = gTextLayoutCache.getValue(paint, text, 0, count, count, flags);
467    if (value == NULL) {
468        LOGE("Cannot get TextLayoutCache value");
469        return ;
470    }
471#else
472    value = new TextLayoutCacheValue();
473    value->computeValues(paint, text, 0, count, count, flags);
474#endif
475    const jchar* glyphArray = value->getGlyphs();
476    int glyphCount = value->getGlyphsCount();
477    int bytesCount = glyphCount * sizeof(jchar);
478    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
479#else
480    const jchar *workText;
481    jchar* buffer = NULL;
482    int32_t workBytes;
483    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
484        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
485        free(buffer);
486    }
487#endif
488}
489
490static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
491        jint start, jint count, jint contextCount, jfloat x, jfloat y,
492        int flags, SkPaint* paint) {
493#if RTL_USE_HARFBUZZ
494    sp<TextLayoutCacheValue> value;
495#if USE_TEXT_LAYOUT_CACHE
496    value = gTextLayoutCache.getValue(paint, text, start, count, contextCount, flags);
497    if (value == NULL) {
498        LOGE("Cannot get TextLayoutCache value");
499        return ;
500    }
501#else
502    value = new TextLayoutCacheValue();
503    value->computeValues(paint, text, start, count, contextCount, flags);
504#endif
505    const jchar* glyphArray = value->getGlyphs();
506    int glyphCount = value->getGlyphsCount();
507    int bytesCount = glyphCount * sizeof(jchar);
508    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
509#else
510    uint8_t rtl = flags & 0x1;
511    if (rtl) {
512        SkAutoSTMalloc<80, jchar> buffer(contextCount);
513        jchar* shaped = buffer.get();
514        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
515            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
516        } else {
517            LOGW("drawTextRun error");
518        }
519    } else {
520        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
521    }
522#endif
523}
524
525static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
526        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
527        jfloat x, jfloat y, jint flags, SkPaint* paint) {
528    jchar* textArray = env->GetCharArrayElements(text, NULL);
529    renderText(renderer, textArray + index, count, x, y, flags, paint);
530    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
531}
532
533static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
534        OpenGLRenderer* renderer, jstring text, jint start, jint end,
535        jfloat x, jfloat y, jint flags, SkPaint* paint) {
536    const jchar* textArray = env->GetStringChars(text, NULL);
537    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
538    env->ReleaseStringChars(text, textArray);
539}
540
541static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
542        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
543        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
544        SkPaint* paint) {
545    jchar* textArray = env->GetCharArrayElements(text, NULL);
546    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
547            count, contextCount, x, y, dirFlags, paint);
548    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
549 }
550
551static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
552        OpenGLRenderer* renderer, jstring text, jint start, jint end,
553        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
554        SkPaint* paint) {
555    const jchar* textArray = env->GetStringChars(text, NULL);
556    jint count = end - start;
557    jint contextCount = contextEnd - contextStart;
558    renderTextRun(renderer, textArray + contextStart, start - contextStart,
559            count, contextCount, x, y, dirFlags, paint);
560    env->ReleaseStringChars(text, textArray);
561}
562
563// ----------------------------------------------------------------------------
564// Display lists
565// ----------------------------------------------------------------------------
566
567static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
568        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
569    return renderer->getDisplayList(displayList);
570}
571
572static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
573        jobject clazz, DisplayList* displayList) {
574    return displayList->getSize();
575}
576
577static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
578        jobject clazz) {
579    return new DisplayListRenderer;
580}
581
582static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
583        jobject clazz, DisplayListRenderer* renderer) {
584    renderer->reset();
585}
586
587static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
588        jobject clazz, DisplayList* displayList) {
589    delete displayList;
590}
591
592static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
593        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
594        jint width, jint height, jobject dirty) {
595    android::uirenderer::Rect bounds;
596    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
597    if (redraw && dirty != NULL) {
598        env->CallVoidMethod(dirty, gRectClassInfo.set,
599                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
600    }
601    return redraw;
602}
603
604static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
605        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
606    renderer->outputDisplayList(displayList);
607}
608
609// ----------------------------------------------------------------------------
610// Layers
611// ----------------------------------------------------------------------------
612
613static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
614        OpenGLRenderer* renderer) {
615    renderer->interrupt();
616}
617
618static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
619        OpenGLRenderer* renderer) {
620    renderer->resume();
621}
622
623static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
624        jobject clazz, Layer* layer) {
625    if (layer) {
626        return new LayerRenderer(layer);
627    }
628    return NULL;
629}
630
631static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
632        jboolean isOpaque, jintArray layerInfo) {
633    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
634
635    if (layer) {
636        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
637        storage[0] = layer->getTexture();
638        env->ReleaseIntArrayElements(layerInfo, storage, 0);
639    }
640
641    return layer;
642}
643
644static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
645        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
646    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
647
648    if (layer) {
649        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
650        storage[0] = layer->getWidth();
651        storage[1] = layer->getHeight();
652        env->ReleaseIntArrayElements(layerInfo, storage, 0);
653    }
654
655    return layer;
656}
657
658static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
659        Layer* layer, jint width, jint height, jintArray layerInfo) {
660    LayerRenderer::resizeLayer(layer, width, height);
661
662    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
663    storage[0] = layer->getWidth();
664    storage[1] = layer->getHeight();
665    env->ReleaseIntArrayElements(layerInfo, storage, 0);
666}
667
668static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
669        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
670    float transform[16];
671    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
672
673    surfaceTexture->updateTexImage();
674    surfaceTexture->getTransformMatrix(transform);
675    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
676
677    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
678}
679
680static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
681        Layer* layer, SkMatrix* matrix) {
682
683    layer->getTransform().load(*matrix);
684}
685
686static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
687    LayerRenderer::destroyLayer(layer);
688}
689
690static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
691        jobject clazz, Layer* layer) {
692    LayerRenderer::destroyLayerDeferred(layer);
693}
694
695static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
696        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
697    renderer->drawLayer(layer, x, y, paint);
698}
699
700static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
701        Layer* layer, SkBitmap* bitmap) {
702    return LayerRenderer::copyLayer(layer, bitmap);
703}
704
705#endif // USE_OPENGL_RENDERER
706
707// ----------------------------------------------------------------------------
708// Common
709// ----------------------------------------------------------------------------
710
711static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
712#ifdef USE_OPENGL_RENDERER
713    return JNI_TRUE;
714#else
715    return JNI_FALSE;
716#endif
717}
718
719// ----------------------------------------------------------------------------
720// Logging
721// ----------------------------------------------------------------------------
722
723static void
724android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
725#ifdef USE_OPENGL_RENDERER
726    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
727    android::uirenderer::DisplayList::outputLogBuffer(fd);
728#endif // USE_OPENGL_RENDERER
729}
730
731// ----------------------------------------------------------------------------
732// JNI Glue
733// ----------------------------------------------------------------------------
734
735const char* const kClassPathName = "android/view/GLES20Canvas";
736
737static JNINativeMethod gMethods[] = {
738    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
739
740#ifdef USE_OPENGL_RENDERER
741    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
742    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
743    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
744    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
745
746    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
747    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
748    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
749    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
750    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
751    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
752
753    { "nCallDrawGLFunction", "(II)Z",
754            (void*) android_view_GLES20Canvas_callDrawGLFunction },
755
756    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
757    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
758    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
759    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
760
761    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
762    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
763
764    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
765    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
766    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
767
768    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
769    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
770    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
771    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
772
773    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
774    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
775    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
776
777    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
778    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
779    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
780
781    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
782
783    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
784
785    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
786    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
787    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
788    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
789    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
790    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
791    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
792    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
793
794    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
795    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
796
797    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
798    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
799    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
800    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
801
802    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
803    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
804            (void*) android_view_GLES20Canvas_drawText },
805
806    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
807    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
808            (void*) android_view_GLES20Canvas_drawTextRun },
809
810    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
811            (void*) android_view_GLES20Canvas_getClipBounds },
812
813    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
814    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
815    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
816    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
817    { "nResetDisplayListRenderer", "(I)V",     (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
818    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
819                                               (void*) android_view_GLES20Canvas_drawDisplayList },
820    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
821    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
822    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
823
824    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
825    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
826    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
827    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
828    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
829                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
830    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
831    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
832    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
833    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
834    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
835
836    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
837    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
838
839#endif
840};
841
842static JNINativeMethod gActivityThreadMethods[] = {
843    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
844                                               (void*) android_app_ActivityThread_dumpGraphics }
845};
846
847
848#ifdef USE_OPENGL_RENDERER
849    #define FIND_CLASS(var, className) \
850            var = env->FindClass(className); \
851            LOG_FATAL_IF(! var, "Unable to find class " className);
852
853    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
854            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
855            LOG_FATAL_IF(! var, "Unable to find method " methodName);
856#else
857    #define FIND_CLASS(var, className)
858    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
859#endif
860
861int register_android_view_GLES20Canvas(JNIEnv* env) {
862    jclass clazz;
863    FIND_CLASS(clazz, "android/graphics/Rect");
864    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
865
866    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
867}
868
869const char* const kActivityThreadPathName = "android/app/ActivityThread";
870
871int register_android_app_ActivityThread(JNIEnv* env) {
872    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
873            gActivityThreadMethods, NELEM(gActivityThreadMethods));
874}
875
876};
877