android_view_GLES20Canvas.cpp revision 5ff9df658230d49e42c43586997a02d8e4dd417e 
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 <cutils/properties.h>
27#include <utils/ResourceTypes.h>
28
29#include <gui/SurfaceTexture.h>
30
31#include <SkBitmap.h>
32#include <SkCanvas.h>
33#include <SkMatrix.h>
34#include <SkPaint.h>
35#include <SkRegion.h>
36#include <SkScalerContext.h>
37#include <SkTemplates.h>
38#include <SkXfermode.h>
39
40#include <DisplayListRenderer.h>
41#include <LayerRenderer.h>
42#include <OpenGLRenderer.h>
43#include <SkiaShader.h>
44#include <SkiaColorFilter.h>
45#include <Rect.h>
46
47#include <TextLayout.h>
48#include <TextLayoutCache.h>
49
50namespace android {
51
52using namespace uirenderer;
53
54/**
55 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
56 *       devices. This means all the logic must be compiled only when the
57 *       preprocessor variable USE_OPENGL_RENDERER is defined.
58 */
59#ifdef USE_OPENGL_RENDERER
60
61///////////////////////////////////////////////////////////////////////////////
62// Defines
63///////////////////////////////////////////////////////////////////////////////
64
65// Debug
66#define DEBUG_RENDERER 0
67
68// Debug
69#if DEBUG_RENDERER
70    #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
71#else
72    #define RENDERER_LOGD(...)
73#endif
74
75#define MODIFIER_SHADOW 1
76#define MODIFIER_SHADER 2
77#define MODIFIER_COLOR_FILTER 4
78
79// ----------------------------------------------------------------------------
80
81static struct {
82    jmethodID set;
83} gRectClassInfo;
84
85// ----------------------------------------------------------------------------
86// Misc
87// ----------------------------------------------------------------------------
88
89static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
90    EGLDisplay display = eglGetCurrentDisplay();
91    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
92
93    eglGetError();
94    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
95
96    EGLint error = eglGetError();
97    if (error != EGL_SUCCESS) {
98        RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
99    }
100
101    return error == EGL_SUCCESS;
102}
103
104static jboolean android_view_GLES20Canvas_isBackBufferPreserved(JNIEnv* env, jobject clazz) {
105    EGLDisplay display = eglGetCurrentDisplay();
106    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
107    EGLint value;
108
109    eglGetError();
110    eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value);
111
112    EGLint error = eglGetError();
113    if (error != EGL_SUCCESS) {
114        RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error);
115    }
116
117    return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED;
118}
119
120static void android_view_GLES20Canvas_disableVsync(JNIEnv* env, jobject clazz) {
121    EGLDisplay display = eglGetCurrentDisplay();
122
123    eglGetError();
124    eglSwapInterval(display, 0);
125
126    EGLint error = eglGetError();
127    if (error != EGL_SUCCESS) {
128        RENDERER_LOGD("Could not disable v-sync (%x)", error);
129    }
130}
131
132static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
133        Caches::FlushMode mode) {
134    if (Caches::hasInstance()) {
135        Caches::getInstance().flush(mode);
136    }
137}
138
139static void android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
140    if (Caches::hasInstance()) {
141        Caches::getInstance().init();
142    }
143}
144
145static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
146    if (Caches::hasInstance()) {
147        Caches::getInstance().terminate();
148    }
149}
150
151// ----------------------------------------------------------------------------
152// Constructors
153// ----------------------------------------------------------------------------
154
155static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
156    RENDERER_LOGD("Create OpenGLRenderer");
157    return new OpenGLRenderer;
158}
159
160static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
161        OpenGLRenderer* renderer) {
162    RENDERER_LOGD("Destroy OpenGLRenderer");
163    delete renderer;
164}
165
166// ----------------------------------------------------------------------------
167// Setup
168// ----------------------------------------------------------------------------
169
170static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
171        OpenGLRenderer* renderer, jint width, jint height) {
172    renderer->setViewport(width, height);
173}
174
175static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
176        OpenGLRenderer* renderer, jboolean opaque) {
177    renderer->prepare(opaque);
178}
179
180static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
181        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
182        jboolean opaque) {
183    renderer->prepareDirty(left, top, right, bottom, opaque);
184}
185
186static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
187        OpenGLRenderer* renderer) {
188    renderer->finish();
189}
190
191static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
192        OpenGLRenderer* renderer, Functor *functor) {
193    android::uirenderer::Rect dirty;
194    return renderer->callDrawGLFunction(functor, dirty);
195}
196
197static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
198    return Caches::getInstance().maxTextureSize;
199}
200
201static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
202    return Caches::getInstance().maxTextureSize;
203}
204
205// ----------------------------------------------------------------------------
206// State
207// ----------------------------------------------------------------------------
208
209static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
210        jint flags) {
211    return renderer->save(flags);
212}
213
214static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
215        OpenGLRenderer* renderer) {
216    return renderer->getSaveCount();
217}
218
219static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
220        OpenGLRenderer* renderer) {
221    renderer->restore();
222}
223
224static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
225        OpenGLRenderer* renderer, jint saveCount) {
226    renderer->restoreToCount(saveCount);
227}
228
229// ----------------------------------------------------------------------------
230// Layers
231// ----------------------------------------------------------------------------
232
233static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
234        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
235        SkPaint* paint, jint saveFlags) {
236    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
237}
238
239static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
240        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
241    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
242    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
243            paint, saveFlags);
244}
245
246static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
247        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
248        jint alpha, jint saveFlags) {
249    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
250}
251
252static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
253        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
254    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
255    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
256            alpha, saveFlags);
257}
258
259// ----------------------------------------------------------------------------
260// Clipping
261// ----------------------------------------------------------------------------
262
263static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
264        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
265        SkCanvas::EdgeType edge) {
266    return renderer->quickReject(left, top, right, bottom);
267}
268
269static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
270        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
271        SkRegion::Op op) {
272    return renderer->clipRect(left, top, right, bottom, op);
273}
274
275static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
276        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
277        SkRegion::Op op) {
278    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
279}
280
281static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
282        OpenGLRenderer* renderer, jobject rect) {
283    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
284
285    env->CallVoidMethod(rect, gRectClassInfo.set,
286            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
287
288    return !bounds.isEmpty();
289}
290
291// ----------------------------------------------------------------------------
292// Transforms
293// ----------------------------------------------------------------------------
294
295static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
296        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
297    renderer->translate(dx, dy);
298}
299
300static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
301        OpenGLRenderer* renderer, jfloat degrees) {
302    renderer->rotate(degrees);
303}
304
305static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
306        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
307    renderer->scale(sx, sy);
308}
309
310static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
311        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
312    renderer->skew(sx, sy);
313}
314
315static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
316        OpenGLRenderer* renderer, SkMatrix* matrix) {
317    renderer->setMatrix(matrix);
318}
319
320static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
321        OpenGLRenderer* renderer, SkMatrix* matrix) {
322    renderer->getMatrix(matrix);
323}
324
325static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
326        OpenGLRenderer* renderer, SkMatrix* matrix) {
327    renderer->concatMatrix(matrix);
328}
329
330// ----------------------------------------------------------------------------
331// Drawing
332// ----------------------------------------------------------------------------
333
334static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
335        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
336        float top, SkPaint* paint) {
337    // This object allows the renderer to allocate a global JNI ref to the buffer object.
338    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
339
340    renderer->drawBitmap(bitmap, left, top, paint);
341}
342
343static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
344        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
345        float srcLeft, float srcTop, float srcRight, float srcBottom,
346        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
347    // This object allows the renderer to allocate a global JNI ref to the buffer object.
348    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
349
350    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
351            dstLeft, dstTop, dstRight, dstBottom, paint);
352}
353
354static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
355        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
356        SkPaint* paint) {
357    // This object allows the renderer to allocate a global JNI ref to the buffer object.
358    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
359
360    renderer->drawBitmap(bitmap, matrix, paint);
361}
362
363static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
364        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
365        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
366        jintArray colors, jint colorOffset, SkPaint* paint) {
367    // This object allows the renderer to allocate a global JNI ref to the buffer object.
368    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
369
370    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
371    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
372
373    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
374
375    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
376    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
377}
378
379static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
380        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
381        float left, float top, float right, float bottom, SkPaint* paint) {
382    // This object allows the renderer to allocate a global JNI ref to the buffer object.
383    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
384
385    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
386    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
387    Res_png_9patch::deserialize(patch);
388
389    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
390            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
391            left, top, right, bottom, paint);
392
393    env->ReleaseByteArrayElements(chunks, storage, 0);
394}
395
396static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
397        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
398    renderer->drawColor(color, mode);
399}
400
401static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
402        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
403        SkPaint* paint) {
404    renderer->drawRect(left, top, right, bottom, paint);
405}
406
407static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
408        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
409        jfloat rx, jfloat ry, SkPaint* paint) {
410    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
411}
412
413static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
414        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
415    renderer->drawCircle(x, y, radius, paint);
416}
417
418static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
419        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
420        SkPaint* paint) {
421    renderer->drawOval(left, top, right, bottom, paint);
422}
423
424static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
425        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
426        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
427    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
428}
429
430static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
431        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
432    SkRegion::Iterator it(*region);
433    while (!it.done()) {
434        const SkIRect& r = it.rect();
435        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
436        it.next();
437    }
438}
439
440static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
441        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
442    jfloat* storage = env->GetFloatArrayElements(points, NULL);
443    renderer->drawPoints(storage + offset, count, paint);
444    env->ReleaseFloatArrayElements(points, storage, 0);
445}
446
447static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
448        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
449    renderer->drawPath(path, paint);
450}
451
452static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
453        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
454    jfloat* storage = env->GetFloatArrayElements(points, NULL);
455    renderer->drawLines(storage + offset, count, paint);
456    env->ReleaseFloatArrayElements(points, storage, 0);
457}
458
459// ----------------------------------------------------------------------------
460// Shaders and color filters
461// ----------------------------------------------------------------------------
462
463static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
464        OpenGLRenderer* renderer, jint modifiers) {
465    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
466    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
467    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
468}
469
470static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
471        OpenGLRenderer* renderer, SkiaShader* shader) {
472    renderer->setupShader(shader);
473}
474
475static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
476        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
477    renderer->setupColorFilter(filter);
478}
479
480static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
481        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
482    renderer->setupShadow(radius, dx, dy, color);
483}
484
485// ----------------------------------------------------------------------------
486// Draw filters
487// ----------------------------------------------------------------------------
488
489static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
490        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
491    renderer->setupPaintFilter(clearBits, setBits);
492}
493
494static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
495        OpenGLRenderer* renderer) {
496    renderer->resetPaintFilter();
497}
498
499// ----------------------------------------------------------------------------
500// Text
501// ----------------------------------------------------------------------------
502
503static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
504        jfloat x, jfloat y, int flags, SkPaint* paint) {
505    sp<TextLayoutCacheValue> value;
506#if USE_TEXT_LAYOUT_CACHE
507    value = TextLayoutCache::getInstance().getValue(paint, text, 0, count, count, flags);
508    if (value == NULL) {
509        ALOGE("Cannot get TextLayoutCache value for text = '%s'",
510                String8(text, count).string());
511        return;
512    }
513#else
514    value = new TextLayoutCacheValue(count);
515    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
516            text, 0, count, count, flags);
517#endif
518    const jchar* glyphs = value->getGlyphs();
519    size_t glyphsCount = value->getGlyphsCount();
520    int bytesCount = glyphsCount * sizeof(jchar);
521    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
522}
523
524static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
525        jint start, jint count, jint contextCount, jfloat x, jfloat y,
526        int flags, SkPaint* paint) {
527    sp<TextLayoutCacheValue> value;
528#if USE_TEXT_LAYOUT_CACHE
529    value = TextLayoutCache::getInstance().getValue(paint, text, start, count, contextCount, flags);
530    if (value == NULL) {
531        ALOGE("Cannot get TextLayoutCache value for text = '%s'",
532                String8(text + start, count).string());
533        return;
534    }
535#else
536    value = new TextLayoutCacheValue(count);
537    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
538            text, start, count, contextCount, flags);
539#endif
540    const jchar* glyphs = value->getGlyphs();
541    size_t glyphsCount = value->getGlyphsCount();
542    int bytesCount = glyphsCount * sizeof(jchar);
543    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
544}
545
546static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
547        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
548        jfloat x, jfloat y, jint flags, SkPaint* paint) {
549    jchar* textArray = env->GetCharArrayElements(text, NULL);
550    renderText(renderer, textArray + index, count, x, y, flags, paint);
551    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
552}
553
554static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
555        OpenGLRenderer* renderer, jstring text, jint start, jint end,
556        jfloat x, jfloat y, jint flags, SkPaint* paint) {
557    const jchar* textArray = env->GetStringChars(text, NULL);
558    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
559    env->ReleaseStringChars(text, textArray);
560}
561
562static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
563        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
564        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
565        SkPaint* paint) {
566    jchar* textArray = env->GetCharArrayElements(text, NULL);
567    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
568            count, contextCount, x, y, dirFlags, paint);
569    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
570 }
571
572static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
573        OpenGLRenderer* renderer, jstring text, jint start, jint end,
574        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
575        SkPaint* paint) {
576    const jchar* textArray = env->GetStringChars(text, NULL);
577    jint count = end - start;
578    jint contextCount = contextEnd - contextStart;
579    renderTextRun(renderer, textArray + contextStart, start - contextStart,
580            count, contextCount, x, y, dirFlags, paint);
581    env->ReleaseStringChars(text, textArray);
582}
583
584static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
585        const jfloat* positions, jint dirFlags, SkPaint* paint) {
586    sp<TextLayoutCacheValue> value;
587#if USE_TEXT_LAYOUT_CACHE
588    value = TextLayoutCache::getInstance().getValue(paint, text, 0, count, count, dirFlags);
589    if (value == NULL) {
590        ALOGE("Cannot get TextLayoutCache value for text = '%s'",
591                String8(text, count).string());
592        return;
593    }
594#else
595    value = new TextLayoutCacheValue(count);
596    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
597            text, 0, count, count, dirFlags);
598#endif
599
600    const jchar* glyphs = value->getGlyphs();
601    size_t glyphsCount = value->getGlyphsCount();
602    if (count < int(glyphsCount)) glyphsCount = count;
603    int bytesCount = glyphsCount * sizeof(jchar);
604
605    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
606}
607
608static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
609        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
610        jfloatArray pos, SkPaint* paint) {
611    jchar* textArray = env->GetCharArrayElements(text, NULL);
612    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
613
614    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
615
616    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
617    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
618}
619
620static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
621        OpenGLRenderer* renderer, jstring text, jint start, jint end,
622        jfloatArray pos, SkPaint* paint) {
623    const jchar* textArray = env->GetStringChars(text, NULL);
624    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
625
626    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
627
628    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
629    env->ReleaseStringChars(text, textArray);
630}
631
632// ----------------------------------------------------------------------------
633// Display lists
634// ----------------------------------------------------------------------------
635
636static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
637        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
638    return renderer->getDisplayList(displayList);
639}
640
641static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
642        jobject clazz, DisplayList* displayList) {
643    return displayList->getSize();
644}
645
646static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
647        jobject clazz) {
648    return new DisplayListRenderer;
649}
650
651static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
652        jobject clazz, DisplayListRenderer* renderer) {
653    renderer->reset();
654}
655
656static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
657        jobject clazz, DisplayList* displayList) {
658    delete displayList;
659}
660
661static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
662        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
663        jint width, jint height, jobject dirty) {
664    android::uirenderer::Rect bounds;
665    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
666    if (redraw && dirty != NULL) {
667        env->CallVoidMethod(dirty, gRectClassInfo.set,
668                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
669    }
670    return redraw;
671}
672
673static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
674        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
675    renderer->outputDisplayList(displayList);
676}
677
678// ----------------------------------------------------------------------------
679// Layers
680// ----------------------------------------------------------------------------
681
682static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
683        OpenGLRenderer* renderer) {
684    renderer->interrupt();
685}
686
687static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
688        OpenGLRenderer* renderer) {
689    renderer->resume();
690}
691
692static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
693        jobject clazz, Layer* layer) {
694    if (layer) {
695        return new LayerRenderer(layer);
696    }
697    return NULL;
698}
699
700static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
701        jboolean isOpaque, jintArray layerInfo) {
702    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
703
704    if (layer) {
705        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
706        storage[0] = layer->getTexture();
707        env->ReleaseIntArrayElements(layerInfo, storage, 0);
708    }
709
710    return layer;
711}
712
713static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
714        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
715    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
716
717    if (layer) {
718        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
719        storage[0] = layer->getWidth();
720        storage[1] = layer->getHeight();
721        env->ReleaseIntArrayElements(layerInfo, storage, 0);
722    }
723
724    return layer;
725}
726
727static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
728        Layer* layer, jint width, jint height, jintArray layerInfo) {
729    LayerRenderer::resizeLayer(layer, width, height);
730
731    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
732    storage[0] = layer->getWidth();
733    storage[1] = layer->getHeight();
734    env->ReleaseIntArrayElements(layerInfo, storage, 0);
735}
736
737static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
738        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
739    float transform[16];
740    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
741
742    surfaceTexture->updateTexImage();
743    surfaceTexture->getTransformMatrix(transform);
744    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
745
746    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
747}
748
749static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
750        Layer* layer, SkMatrix* matrix) {
751
752    layer->getTransform().load(*matrix);
753}
754
755static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
756    LayerRenderer::destroyLayer(layer);
757}
758
759static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
760        jobject clazz, Layer* layer) {
761    LayerRenderer::destroyLayerDeferred(layer);
762}
763
764static void android_view_GLES20Canvas_flushLayer(JNIEnv* env, jobject clazz, Layer* layer) {
765    LayerRenderer::flushLayer(layer);
766}
767
768static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
769        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
770    renderer->drawLayer(layer, x, y, paint);
771}
772
773static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
774        Layer* layer, SkBitmap* bitmap) {
775    return LayerRenderer::copyLayer(layer, bitmap);
776}
777
778#endif // USE_OPENGL_RENDERER
779
780// ----------------------------------------------------------------------------
781// Common
782// ----------------------------------------------------------------------------
783
784static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
785#ifdef USE_OPENGL_RENDERER
786    char prop[PROPERTY_VALUE_MAX];
787    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
788        // not in the emulator
789        return JNI_TRUE;
790    }
791    // In the emulator this property will be set to 1 when hardware GLES is
792    // enabled, 0 otherwise. On old emulator versions it will be undefined.
793    property_get("ro.kernel.qemu.gles", prop, "0");
794    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
795#else
796    return JNI_FALSE;
797#endif
798}
799
800// ----------------------------------------------------------------------------
801// Logging
802// ----------------------------------------------------------------------------
803
804static void
805android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
806#ifdef USE_OPENGL_RENDERER
807    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
808    android::uirenderer::DisplayList::outputLogBuffer(fd);
809#endif // USE_OPENGL_RENDERER
810}
811
812// ----------------------------------------------------------------------------
813// JNI Glue
814// ----------------------------------------------------------------------------
815
816const char* const kClassPathName = "android/view/GLES20Canvas";
817
818static JNINativeMethod gMethods[] = {
819    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
820
821#ifdef USE_OPENGL_RENDERER
822    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
823    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
824    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
825    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
826    { "nInitCaches",            "()V",         (void*) android_view_GLES20Canvas_initCaches },
827    { "nTerminateCaches",       "()V",         (void*) android_view_GLES20Canvas_terminateCaches },
828
829    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
830    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
831    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
832    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
833    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
834    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
835
836    { "nCallDrawGLFunction", "(II)Z",
837            (void*) android_view_GLES20Canvas_callDrawGLFunction },
838
839    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
840    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
841    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
842    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
843
844    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
845    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
846    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
847    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
848
849    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
850    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
851    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
852
853    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
854    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
855    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
856    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
857
858    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
859    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
860    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
861
862    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
863    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
864    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
865
866    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
867
868    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
869
870    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
871    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
872    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
873    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
874    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
875    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
876    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
877    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
878
879    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
880    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
881
882    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
883    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
884    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
885    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
886
887    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
888    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
889
890    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
891    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
892            (void*) android_view_GLES20Canvas_drawText },
893
894    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
895    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
896            (void*) android_view_GLES20Canvas_drawTextRun },
897
898    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
899    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
900            (void*) android_view_GLES20Canvas_drawPosText },
901
902    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
903            (void*) android_view_GLES20Canvas_getClipBounds },
904
905    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
906    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
907    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
908    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
909    { "nResetDisplayListRenderer", "(I)V",     (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
910    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
911                                               (void*) android_view_GLES20Canvas_drawDisplayList },
912    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
913    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
914    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
915
916    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
917    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
918    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
919    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
920    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
921                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
922    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
923    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
924    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
925    { "nFlushLayer",             "(I)V",       (void*) android_view_GLES20Canvas_flushLayer },
926    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
927    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
928
929    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
930    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
931
932#endif
933};
934
935static JNINativeMethod gActivityThreadMethods[] = {
936    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
937                                               (void*) android_app_ActivityThread_dumpGraphics }
938};
939
940
941#ifdef USE_OPENGL_RENDERER
942    #define FIND_CLASS(var, className) \
943            var = env->FindClass(className); \
944            LOG_FATAL_IF(! var, "Unable to find class " className);
945
946    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
947            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
948            LOG_FATAL_IF(! var, "Unable to find method " methodName);
949#else
950    #define FIND_CLASS(var, className)
951    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
952#endif
953
954int register_android_view_GLES20Canvas(JNIEnv* env) {
955    jclass clazz;
956    FIND_CLASS(clazz, "android/graphics/Rect");
957    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
958
959    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
960}
961
962const char* const kActivityThreadPathName = "android/app/ActivityThread";
963
964int register_android_app_ActivityThread(JNIEnv* env) {
965    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
966            gActivityThreadMethods, NELEM(gActivityThreadMethods));
967}
968
969};
970