android_view_GLES20Canvas.cpp revision 671d6cf460531825a321edb200523d0faa7792c9 
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// Text
487// ----------------------------------------------------------------------------
488
489static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
490        jfloat x, jfloat y, int flags, SkPaint* paint) {
491    sp<TextLayoutCacheValue> value;
492#if USE_TEXT_LAYOUT_CACHE
493    value = TextLayoutCache::getInstance().getValue(paint, text, 0, count, count, flags);
494    if (value == NULL) {
495        ALOGE("Cannot get TextLayoutCache value for text = '%s'",
496                String8(text, count).string());
497        return;
498    }
499#else
500    value = new TextLayoutCacheValue(count);
501    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
502            text, 0, count, count, flags);
503#endif
504    const jchar* glyphs = value->getGlyphs();
505    size_t glyphsCount = value->getGlyphsCount();
506    int bytesCount = glyphsCount * sizeof(jchar);
507    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
508}
509
510static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
511        jint start, jint count, jint contextCount, jfloat x, jfloat y,
512        int flags, SkPaint* paint) {
513    sp<TextLayoutCacheValue> value;
514#if USE_TEXT_LAYOUT_CACHE
515    value = TextLayoutCache::getInstance().getValue(paint, text, start, count, contextCount, flags);
516    if (value == NULL) {
517        ALOGE("Cannot get TextLayoutCache value for text = '%s'",
518                String8(text + start, count).string());
519        return;
520    }
521#else
522    value = new TextLayoutCacheValue(count);
523    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
524            text, start, count, contextCount, flags);
525#endif
526    const jchar* glyphs = value->getGlyphs();
527    size_t glyphsCount = value->getGlyphsCount();
528    int bytesCount = glyphsCount * sizeof(jchar);
529    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
530}
531
532static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
533        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
534        jfloat x, jfloat y, jint flags, SkPaint* paint) {
535    jchar* textArray = env->GetCharArrayElements(text, NULL);
536    renderText(renderer, textArray + index, count, x, y, flags, paint);
537    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
538}
539
540static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
541        OpenGLRenderer* renderer, jstring text, jint start, jint end,
542        jfloat x, jfloat y, jint flags, SkPaint* paint) {
543    const jchar* textArray = env->GetStringChars(text, NULL);
544    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
545    env->ReleaseStringChars(text, textArray);
546}
547
548static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
549        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
550        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
551        SkPaint* paint) {
552    jchar* textArray = env->GetCharArrayElements(text, NULL);
553    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
554            count, contextCount, x, y, dirFlags, paint);
555    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
556 }
557
558static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
559        OpenGLRenderer* renderer, jstring text, jint start, jint end,
560        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
561        SkPaint* paint) {
562    const jchar* textArray = env->GetStringChars(text, NULL);
563    jint count = end - start;
564    jint contextCount = contextEnd - contextStart;
565    renderTextRun(renderer, textArray + contextStart, start - contextStart,
566            count, contextCount, x, y, dirFlags, paint);
567    env->ReleaseStringChars(text, textArray);
568}
569
570static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
571        const jfloat* positions, jint dirFlags, SkPaint* paint) {
572    sp<TextLayoutCacheValue> value;
573#if USE_TEXT_LAYOUT_CACHE
574    value = TextLayoutCache::getInstance().getValue(paint, text, 0, count, count, dirFlags);
575    if (value == NULL) {
576        ALOGE("Cannot get TextLayoutCache value for text = '%s'",
577                String8(text, count).string());
578        return;
579    }
580#else
581    value = new TextLayoutCacheValue(count);
582    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
583            text, 0, count, count, dirFlags);
584#endif
585
586    const jchar* glyphs = value->getGlyphs();
587    size_t glyphsCount = value->getGlyphsCount();
588    if (count < int(glyphsCount)) glyphsCount = count;
589    int bytesCount = glyphsCount * sizeof(jchar);
590
591    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
592}
593
594static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
595        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
596        jfloatArray pos, SkPaint* paint) {
597    jchar* textArray = env->GetCharArrayElements(text, NULL);
598    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
599
600    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
601
602    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
603    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
604}
605
606static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
607        OpenGLRenderer* renderer, jstring text, jint start, jint end,
608        jfloatArray pos, SkPaint* paint) {
609    const jchar* textArray = env->GetStringChars(text, NULL);
610    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
611
612    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
613
614    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
615    env->ReleaseStringChars(text, textArray);
616}
617
618// ----------------------------------------------------------------------------
619// Display lists
620// ----------------------------------------------------------------------------
621
622static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
623        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
624    return renderer->getDisplayList(displayList);
625}
626
627static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
628        jobject clazz, DisplayList* displayList) {
629    return displayList->getSize();
630}
631
632static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
633        jobject clazz) {
634    return new DisplayListRenderer;
635}
636
637static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
638        jobject clazz, DisplayListRenderer* renderer) {
639    renderer->reset();
640}
641
642static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
643        jobject clazz, DisplayList* displayList) {
644    delete displayList;
645}
646
647static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
648        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
649        jint width, jint height, jobject dirty) {
650    android::uirenderer::Rect bounds;
651    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
652    if (redraw && dirty != NULL) {
653        env->CallVoidMethod(dirty, gRectClassInfo.set,
654                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
655    }
656    return redraw;
657}
658
659static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
660        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
661    renderer->outputDisplayList(displayList);
662}
663
664// ----------------------------------------------------------------------------
665// Layers
666// ----------------------------------------------------------------------------
667
668static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
669        OpenGLRenderer* renderer) {
670    renderer->interrupt();
671}
672
673static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
674        OpenGLRenderer* renderer) {
675    renderer->resume();
676}
677
678static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
679        jobject clazz, Layer* layer) {
680    if (layer) {
681        return new LayerRenderer(layer);
682    }
683    return NULL;
684}
685
686static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
687        jboolean isOpaque, jintArray layerInfo) {
688    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
689
690    if (layer) {
691        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
692        storage[0] = layer->getTexture();
693        env->ReleaseIntArrayElements(layerInfo, storage, 0);
694    }
695
696    return layer;
697}
698
699static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
700        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
701    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
702
703    if (layer) {
704        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
705        storage[0] = layer->getWidth();
706        storage[1] = layer->getHeight();
707        env->ReleaseIntArrayElements(layerInfo, storage, 0);
708    }
709
710    return layer;
711}
712
713static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
714        Layer* layer, jint width, jint height, jintArray layerInfo) {
715    LayerRenderer::resizeLayer(layer, width, height);
716
717    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
718    storage[0] = layer->getWidth();
719    storage[1] = layer->getHeight();
720    env->ReleaseIntArrayElements(layerInfo, storage, 0);
721}
722
723static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
724        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
725    float transform[16];
726    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
727
728    surfaceTexture->updateTexImage();
729    surfaceTexture->getTransformMatrix(transform);
730    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
731
732    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
733}
734
735static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
736        Layer* layer, SkMatrix* matrix) {
737
738    layer->getTransform().load(*matrix);
739}
740
741static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
742    LayerRenderer::destroyLayer(layer);
743}
744
745static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
746        jobject clazz, Layer* layer) {
747    LayerRenderer::destroyLayerDeferred(layer);
748}
749
750static void android_view_GLES20Canvas_flushLayer(JNIEnv* env, jobject clazz, Layer* layer) {
751    LayerRenderer::flushLayer(layer);
752}
753
754static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
755        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
756    renderer->drawLayer(layer, x, y, paint);
757}
758
759static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
760        Layer* layer, SkBitmap* bitmap) {
761    return LayerRenderer::copyLayer(layer, bitmap);
762}
763
764#endif // USE_OPENGL_RENDERER
765
766// ----------------------------------------------------------------------------
767// Common
768// ----------------------------------------------------------------------------
769
770static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
771#ifdef USE_OPENGL_RENDERER
772    char prop[PROPERTY_VALUE_MAX];
773    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
774        // not in the emulator
775        return JNI_TRUE;
776    }
777    // In the emulator this property will be set to 1 when hardware GLES is
778    // enabled, 0 otherwise. On old emulator versions it will be undefined.
779    property_get("ro.kernel.qemu.gles", prop, "0");
780    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
781#else
782    return JNI_FALSE;
783#endif
784}
785
786// ----------------------------------------------------------------------------
787// Logging
788// ----------------------------------------------------------------------------
789
790static void
791android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
792#ifdef USE_OPENGL_RENDERER
793    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
794    android::uirenderer::DisplayList::outputLogBuffer(fd);
795#endif // USE_OPENGL_RENDERER
796}
797
798// ----------------------------------------------------------------------------
799// JNI Glue
800// ----------------------------------------------------------------------------
801
802const char* const kClassPathName = "android/view/GLES20Canvas";
803
804static JNINativeMethod gMethods[] = {
805    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
806
807#ifdef USE_OPENGL_RENDERER
808    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
809    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
810    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
811    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
812    { "nInitCaches",            "()V",         (void*) android_view_GLES20Canvas_initCaches },
813    { "nTerminateCaches",       "()V",         (void*) android_view_GLES20Canvas_terminateCaches },
814
815    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
816    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
817    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
818    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
819    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
820    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
821
822    { "nCallDrawGLFunction", "(II)Z",
823            (void*) android_view_GLES20Canvas_callDrawGLFunction },
824
825    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
826    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
827    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
828    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
829
830    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
831    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
832    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
833    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
834
835    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
836    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
837    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
838
839    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
840    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
841    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
842    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
843
844    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
845    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
846    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
847
848    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
849    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
850    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
851
852    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
853
854    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
855
856    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
857    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
858    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
859    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
860    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
861    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
862    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
863    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
864
865    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
866    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
867
868    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
869    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
870    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
871    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
872
873    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
874    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
875            (void*) android_view_GLES20Canvas_drawText },
876
877    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
878    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
879            (void*) android_view_GLES20Canvas_drawTextRun },
880
881    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
882    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
883            (void*) android_view_GLES20Canvas_drawPosText },
884
885    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
886            (void*) android_view_GLES20Canvas_getClipBounds },
887
888    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
889    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
890    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
891    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
892    { "nResetDisplayListRenderer", "(I)V",     (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
893    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
894                                               (void*) android_view_GLES20Canvas_drawDisplayList },
895    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
896    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
897    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
898
899    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
900    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
901    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
902    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
903    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
904                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
905    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
906    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
907    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
908    { "nFlushLayer",             "(I)V",       (void*) android_view_GLES20Canvas_flushLayer },
909    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
910    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
911
912    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
913    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
914
915#endif
916};
917
918static JNINativeMethod gActivityThreadMethods[] = {
919    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
920                                               (void*) android_app_ActivityThread_dumpGraphics }
921};
922
923
924#ifdef USE_OPENGL_RENDERER
925    #define FIND_CLASS(var, className) \
926            var = env->FindClass(className); \
927            LOG_FATAL_IF(! var, "Unable to find class " className);
928
929    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
930            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
931            LOG_FATAL_IF(! var, "Unable to find method " methodName);
932#else
933    #define FIND_CLASS(var, className)
934    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
935#endif
936
937int register_android_view_GLES20Canvas(JNIEnv* env) {
938    jclass clazz;
939    FIND_CLASS(clazz, "android/graphics/Rect");
940    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
941
942    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
943}
944
945const char* const kActivityThreadPathName = "android/app/ActivityThread";
946
947int register_android_app_ActivityThread(JNIEnv* env) {
948    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
949            gActivityThreadMethods, NELEM(gActivityThreadMethods));
950}
951
952};
953