android_view_GLES20Canvas.cpp revision 6be3d5561cbeccf0a8257a4acb155657f868e548 
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
130// ----------------------------------------------------------------------------
131// Constructors
132// ----------------------------------------------------------------------------
133
134static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
135    RENDERER_LOGD("Create OpenGLRenderer");
136    return new OpenGLRenderer;
137}
138
139static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
140        OpenGLRenderer* renderer) {
141    RENDERER_LOGD("Destroy OpenGLRenderer");
142    delete renderer;
143}
144
145// ----------------------------------------------------------------------------
146// Setup
147// ----------------------------------------------------------------------------
148
149static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
150        OpenGLRenderer* renderer, jint width, jint height) {
151    renderer->setViewport(width, height);
152}
153
154static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
155        OpenGLRenderer* renderer, jboolean opaque) {
156    renderer->prepare(opaque);
157}
158
159static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
160        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
161        jboolean opaque) {
162    renderer->prepareDirty(left, top, right, bottom, opaque);
163}
164
165static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
166        OpenGLRenderer* renderer) {
167    renderer->finish();
168}
169
170static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
171        OpenGLRenderer* renderer, Functor *functor) {
172    android::uirenderer::Rect dirty;
173    return renderer->callDrawGLFunction(functor, dirty);
174}
175
176static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
177    return Caches::getInstance().maxTextureSize;
178}
179
180static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
181    return Caches::getInstance().maxTextureSize;
182}
183
184// ----------------------------------------------------------------------------
185// State
186// ----------------------------------------------------------------------------
187
188static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
189        jint flags) {
190    return renderer->save(flags);
191}
192
193static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
194        OpenGLRenderer* renderer) {
195    return renderer->getSaveCount();
196}
197
198static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
199        OpenGLRenderer* renderer) {
200    renderer->restore();
201}
202
203static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
204        OpenGLRenderer* renderer, jint saveCount) {
205    renderer->restoreToCount(saveCount);
206}
207
208// ----------------------------------------------------------------------------
209// Layers
210// ----------------------------------------------------------------------------
211
212static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
213        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
214        SkPaint* paint, jint saveFlags) {
215    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
216}
217
218static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
219        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
220        jint alpha, jint saveFlags) {
221    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
222}
223
224// ----------------------------------------------------------------------------
225// Clipping
226// ----------------------------------------------------------------------------
227
228static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
229        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
230        SkCanvas::EdgeType edge) {
231    return renderer->quickReject(left, top, right, bottom);
232}
233
234static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
235        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
236        SkRegion::Op op) {
237    return renderer->clipRect(left, top, right, bottom, op);
238}
239
240static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
241        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
242        SkRegion::Op op) {
243    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
244}
245
246static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
247        OpenGLRenderer* renderer, jobject rect) {
248    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
249
250    env->CallVoidMethod(rect, gRectClassInfo.set,
251            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
252
253    return !bounds.isEmpty();
254}
255
256// ----------------------------------------------------------------------------
257// Transforms
258// ----------------------------------------------------------------------------
259
260static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
261        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
262    renderer->translate(dx, dy);
263}
264
265static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
266        OpenGLRenderer* renderer, jfloat degrees) {
267    renderer->rotate(degrees);
268}
269
270static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
271        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
272    renderer->scale(sx, sy);
273}
274
275static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
276        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
277    renderer->skew(sx, sy);
278}
279
280static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
281        OpenGLRenderer* renderer, SkMatrix* matrix) {
282    renderer->setMatrix(matrix);
283}
284
285static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
286        jobject clazz, OpenGLRenderer* renderer) {
287    return renderer->getMatrix();
288}
289
290static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
291        OpenGLRenderer* renderer, SkMatrix* matrix) {
292    renderer->getMatrix(matrix);
293}
294
295static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
296        OpenGLRenderer* renderer, SkMatrix* matrix) {
297    renderer->concatMatrix(matrix);
298}
299
300// ----------------------------------------------------------------------------
301// Drawing
302// ----------------------------------------------------------------------------
303
304static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
305        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
306        float top, SkPaint* paint) {
307    // This object allows the renderer to allocate a global JNI ref to the buffer object.
308    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
309
310    renderer->drawBitmap(bitmap, left, top, paint);
311}
312
313static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
314        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
315        float srcLeft, float srcTop, float srcRight, float srcBottom,
316        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
317    // This object allows the renderer to allocate a global JNI ref to the buffer object.
318    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
319
320    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
321            dstLeft, dstTop, dstRight, dstBottom, paint);
322}
323
324static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
325        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
326        SkPaint* paint) {
327    // This object allows the renderer to allocate a global JNI ref to the buffer object.
328    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
329
330    renderer->drawBitmap(bitmap, matrix, paint);
331}
332
333static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
334        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
335        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
336        jintArray colors, jint colorOffset, 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    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
341    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
342
343    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
344
345    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
346    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
347}
348
349static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
350        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
351        float left, float top, float right, float bottom, SkPaint* paint) {
352    // This object allows the renderer to allocate a global JNI ref to the buffer object.
353    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
354
355    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
356    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
357    Res_png_9patch::deserialize(patch);
358
359    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
360            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
361            left, top, right, bottom, paint);
362
363    env->ReleaseByteArrayElements(chunks, storage, 0);
364}
365
366static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
367        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
368    renderer->drawColor(color, mode);
369}
370
371static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
372        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
373        SkPaint* paint) {
374    renderer->drawRect(left, top, right, bottom, paint);
375}
376
377static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
378        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
379        jfloat rx, jfloat ry, SkPaint* paint) {
380    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
381}
382
383static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
384        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
385    renderer->drawCircle(x, y, radius, paint);
386}
387
388static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
389        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
390        SkPaint* paint) {
391    renderer->drawOval(left, top, right, bottom, paint);
392}
393
394static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
395        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
396        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
397    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
398}
399
400static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
401        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
402    SkRegion::Iterator it(*region);
403    while (!it.done()) {
404        const SkIRect& r = it.rect();
405        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
406        it.next();
407    }
408}
409
410static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
411        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
412    jfloat* storage = env->GetFloatArrayElements(points, NULL);
413    renderer->drawPoints(storage + offset, count, paint);
414    env->ReleaseFloatArrayElements(points, storage, 0);
415}
416
417static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
418        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
419    renderer->drawPath(path, paint);
420}
421
422static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
423        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
424    jfloat* storage = env->GetFloatArrayElements(points, NULL);
425    renderer->drawLines(storage + offset, count, paint);
426    env->ReleaseFloatArrayElements(points, storage, 0);
427}
428
429// ----------------------------------------------------------------------------
430// Shaders and color filters
431// ----------------------------------------------------------------------------
432
433static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
434        OpenGLRenderer* renderer, jint modifiers) {
435    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
436    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
437    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
438}
439
440static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
441        OpenGLRenderer* renderer, SkiaShader* shader) {
442    renderer->setupShader(shader);
443}
444
445static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
446        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
447    renderer->setupColorFilter(filter);
448}
449
450static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
451        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
452    renderer->setupShadow(radius, dx, dy, color);
453}
454
455// ----------------------------------------------------------------------------
456// Text
457// ----------------------------------------------------------------------------
458
459static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
460        jfloat x, jfloat y, int flags, SkPaint* paint) {
461#if RTL_USE_HARFBUZZ
462    sp<TextLayoutCacheValue> value;
463#if USE_TEXT_LAYOUT_CACHE
464    value = gTextLayoutCache.getValue(paint, text, 0, count, count, flags);
465    if (value == NULL) {
466        LOGE("Cannot get TextLayoutCache value");
467        return ;
468    }
469#else
470    value = new TextLayoutCacheValue();
471    value->computeValues(paint, text, 0, count, count, flags);
472#endif
473#if DEBUG_GLYPHS
474    logGlyphs(value);
475#endif
476    const jchar* glyphArray = value->getGlyphs();
477    int glyphCount = value->getGlyphsCount();
478    int bytesCount = glyphCount * sizeof(jchar);
479    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
480#else
481    const jchar *workText;
482    jchar* buffer = NULL;
483    int32_t workBytes;
484    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
485        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
486        free(buffer);
487    }
488#endif
489}
490
491static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
492        jint start, jint count, jint contextCount, jfloat x, jfloat y,
493        int flags, SkPaint* paint) {
494#if RTL_USE_HARFBUZZ
495    sp<TextLayoutCacheValue> value;
496#if USE_TEXT_LAYOUT_CACHE
497    value = gTextLayoutCache.getValue(paint, text, start, count, contextCount, flags);
498    if (value == NULL) {
499        LOGE("Cannot get TextLayoutCache value");
500        return ;
501    }
502#else
503    value = new TextLayoutCacheValue();
504    value->computeValues(paint, text, start, count, contextCount, flags);
505#endif
506#if DEBUG_GLYPHS
507    logGlyphs(value);
508#endif
509    const jchar* glyphArray = value->getGlyphs();
510    int glyphCount = value->getGlyphsCount();
511    int bytesCount = glyphCount * sizeof(jchar);
512    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
513#else
514    uint8_t rtl = flags & 0x1;
515    if (rtl) {
516        SkAutoSTMalloc<80, jchar> buffer(contextCount);
517        jchar* shaped = buffer.get();
518        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
519            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
520        } else {
521            LOGW("drawTextRun error");
522        }
523    } else {
524        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
525    }
526#endif
527}
528
529static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
530        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
531        jfloat x, jfloat y, jint flags, SkPaint* paint) {
532    jchar* textArray = env->GetCharArrayElements(text, NULL);
533    renderText(renderer, textArray + index, count, x, y, flags, paint);
534    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
535}
536
537static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
538        OpenGLRenderer* renderer, jstring text, jint start, jint end,
539        jfloat x, jfloat y, jint flags, SkPaint* paint) {
540    const jchar* textArray = env->GetStringChars(text, NULL);
541    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
542    env->ReleaseStringChars(text, textArray);
543}
544
545static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
546        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
547        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
548        SkPaint* paint) {
549    jchar* textArray = env->GetCharArrayElements(text, NULL);
550    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
551            count, contextCount, x, y, dirFlags, paint);
552    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
553 }
554
555static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
556        OpenGLRenderer* renderer, jstring text, jint start, jint end,
557        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
558        SkPaint* paint) {
559    const jchar* textArray = env->GetStringChars(text, NULL);
560    jint count = end - start;
561    jint contextCount = contextEnd - contextStart;
562    renderTextRun(renderer, textArray + contextStart, start - contextStart,
563            count, contextCount, x, y, dirFlags, paint);
564    env->ReleaseStringChars(text, textArray);
565}
566
567// ----------------------------------------------------------------------------
568// Display lists
569// ----------------------------------------------------------------------------
570
571static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
572        jobject clazz, DisplayListRenderer* renderer) {
573    return renderer->getDisplayList();
574}
575
576static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
577        jobject clazz, DisplayListRenderer* renderer) {
578    if (renderer == NULL) {
579        renderer = new DisplayListRenderer;
580    } else {
581        renderer->reset();
582    }
583    return renderer;
584}
585
586static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
587        jobject clazz, DisplayList* displayList) {
588    delete displayList;
589}
590
591static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
592        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
593        jint width, jint height, jobject dirty) {
594    android::uirenderer::Rect bounds;
595    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
596    if (redraw && dirty != NULL) {
597        env->CallVoidMethod(dirty, gRectClassInfo.set,
598                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
599    }
600    return redraw;
601}
602
603static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
604        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
605    renderer->outputDisplayList(displayList);
606}
607
608// ----------------------------------------------------------------------------
609// Layers
610// ----------------------------------------------------------------------------
611
612static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
613        OpenGLRenderer* renderer) {
614    renderer->interrupt();
615}
616
617static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
618        OpenGLRenderer* renderer) {
619    renderer->resume();
620}
621
622static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
623        jobject clazz, Layer* layer) {
624    if (layer) {
625        return new LayerRenderer(layer);
626    }
627    return NULL;
628}
629
630static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
631        jboolean isOpaque, jintArray layerInfo) {
632    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
633
634    if (layer) {
635        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
636        storage[0] = layer->getTexture();
637        env->ReleaseIntArrayElements(layerInfo, storage, 0);
638    }
639
640    return layer;
641}
642
643static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
644        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
645    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
646
647    if (layer) {
648        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
649        storage[0] = layer->getWidth();
650        storage[1] = layer->getHeight();
651        env->ReleaseIntArrayElements(layerInfo, storage, 0);
652    }
653
654    return layer;
655}
656
657static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
658        Layer* layer, jint width, jint height, jintArray layerInfo) {
659    LayerRenderer::resizeLayer(layer, width, height);
660
661    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
662    storage[0] = layer->getWidth();
663    storage[1] = layer->getHeight();
664    env->ReleaseIntArrayElements(layerInfo, storage, 0);
665}
666
667static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
668        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
669    float transform[16];
670    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
671
672    surfaceTexture->updateTexImage();
673    surfaceTexture->getTransformMatrix(transform);
674    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
675
676    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
677}
678
679static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
680    LayerRenderer::destroyLayer(layer);
681}
682
683static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
684        jobject clazz, Layer* layer) {
685    LayerRenderer::destroyLayerDeferred(layer);
686}
687
688static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
689        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
690    renderer->drawLayer(layer, x, y, paint);
691}
692
693static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
694        Layer* layer, SkBitmap* bitmap) {
695    return LayerRenderer::copyLayer(layer, bitmap);
696}
697
698#endif // USE_OPENGL_RENDERER
699
700// ----------------------------------------------------------------------------
701// Common
702// ----------------------------------------------------------------------------
703
704static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
705#ifdef USE_OPENGL_RENDERER
706    return JNI_TRUE;
707#else
708    return JNI_FALSE;
709#endif
710}
711
712// ----------------------------------------------------------------------------
713// Logging
714// ----------------------------------------------------------------------------
715
716static void
717android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor)
718{
719#ifdef USE_OPENGL_RENDERER
720    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
721    android::uirenderer::DisplayList::outputLogBuffer(fd);
722#endif // USE_OPENGL_RENDERER
723}
724
725// ----------------------------------------------------------------------------
726// JNI Glue
727// ----------------------------------------------------------------------------
728
729const char* const kClassPathName = "android/view/GLES20Canvas";
730
731static JNINativeMethod gMethods[] = {
732    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
733
734#ifdef USE_OPENGL_RENDERER
735    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
736    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
737    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
738
739    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
740    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
741    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
742    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
743    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
744    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
745
746    { "nCallDrawGLFunction", "(II)Z",
747            (void*) android_view_GLES20Canvas_callDrawGLFunction },
748
749    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
750    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
751    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
752    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
753
754    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
755    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
756
757    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
758    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
759    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
760
761    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
762    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
763    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
764    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
765
766    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
767    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
768    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
769    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
770
771    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
772    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
773    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
774
775    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
776
777    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
778
779    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
780    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
781    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
782    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
783    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
784    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
785    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
786    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
787
788    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
789    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
790
791    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
792    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
793    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
794    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
795
796    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
797    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
798            (void*) android_view_GLES20Canvas_drawText },
799
800    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
801    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
802            (void*) android_view_GLES20Canvas_drawTextRun },
803
804    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
805            (void*) android_view_GLES20Canvas_getClipBounds },
806
807    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
808    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
809    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
810    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
811                                               (void*) android_view_GLES20Canvas_drawDisplayList },
812    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
813    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
814    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
815
816    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
817    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
818    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
819    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
820    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
821                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
822    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
823    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
824    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
825    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
826
827    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
828    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
829
830#endif
831};
832
833static JNINativeMethod gActivityThreadMethods[] = {
834    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
835                                               (void*) android_app_ActivityThread_dumpGraphics }
836};
837
838
839#ifdef USE_OPENGL_RENDERER
840    #define FIND_CLASS(var, className) \
841            var = env->FindClass(className); \
842            LOG_FATAL_IF(! var, "Unable to find class " className);
843
844    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
845            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
846            LOG_FATAL_IF(! var, "Unable to find method " methodName);
847#else
848    #define FIND_CLASS(var, className)
849    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
850#endif
851
852int register_android_view_GLES20Canvas(JNIEnv* env) {
853    jclass clazz;
854    FIND_CLASS(clazz, "android/graphics/Rect");
855    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
856
857    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
858}
859
860const char* const kActivityThreadPathName = "android/app/ActivityThread";
861
862int register_android_app_ActivityThread(JNIEnv* env) {
863    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
864            gActivityThreadMethods, NELEM(gActivityThreadMethods));
865}
866
867};
868