android_view_GLES20Canvas.cpp revision 5baa3a62a97544669fba6d65a11c07f252e654dd 
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 <TextLayoutCache.h>
48
49namespace android {
50
51using namespace uirenderer;
52
53/**
54 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
55 *       devices. This means all the logic must be compiled only when the
56 *       preprocessor variable USE_OPENGL_RENDERER is defined.
57 */
58#ifdef USE_OPENGL_RENDERER
59
60///////////////////////////////////////////////////////////////////////////////
61// Defines
62///////////////////////////////////////////////////////////////////////////////
63
64// Debug
65#define DEBUG_RENDERER 0
66
67// Debug
68#if DEBUG_RENDERER
69    #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
70#else
71    #define RENDERER_LOGD(...)
72#endif
73
74#define MODIFIER_SHADOW 1
75#define MODIFIER_SHADER 2
76#define MODIFIER_COLOR_FILTER 4
77
78// ----------------------------------------------------------------------------
79
80static struct {
81    jmethodID set;
82} gRectClassInfo;
83
84// ----------------------------------------------------------------------------
85// Misc
86// ----------------------------------------------------------------------------
87
88static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
89    EGLDisplay display = eglGetCurrentDisplay();
90    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
91
92    eglGetError();
93    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
94
95    EGLint error = eglGetError();
96    if (error != EGL_SUCCESS) {
97        RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
98    }
99
100    return error == EGL_SUCCESS;
101}
102
103static jboolean android_view_GLES20Canvas_isBackBufferPreserved(JNIEnv* env, jobject clazz) {
104    EGLDisplay display = eglGetCurrentDisplay();
105    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
106    EGLint value;
107
108    eglGetError();
109    eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value);
110
111    EGLint error = eglGetError();
112    if (error != EGL_SUCCESS) {
113        RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error);
114    }
115
116    return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED;
117}
118
119static void android_view_GLES20Canvas_disableVsync(JNIEnv* env, jobject clazz) {
120    EGLDisplay display = eglGetCurrentDisplay();
121
122    eglGetError();
123    eglSwapInterval(display, 0);
124
125    EGLint error = eglGetError();
126    if (error != EGL_SUCCESS) {
127        RENDERER_LOGD("Could not disable v-sync (%x)", error);
128    }
129}
130
131static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
132        Caches::FlushMode mode) {
133    if (Caches::hasInstance()) {
134        Caches::getInstance().flush(mode);
135    }
136}
137
138static void android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
139    if (Caches::hasInstance()) {
140        Caches::getInstance().init();
141    }
142}
143
144static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
145    if (Caches::hasInstance()) {
146        Caches::getInstance().terminate();
147    }
148}
149
150// ----------------------------------------------------------------------------
151// Constructors
152// ----------------------------------------------------------------------------
153
154static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
155    RENDERER_LOGD("Create OpenGLRenderer");
156    return new OpenGLRenderer;
157}
158
159static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
160        OpenGLRenderer* renderer) {
161    RENDERER_LOGD("Destroy OpenGLRenderer");
162    delete renderer;
163}
164
165// ----------------------------------------------------------------------------
166// Setup
167// ----------------------------------------------------------------------------
168
169static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
170        OpenGLRenderer* renderer, jint width, jint height) {
171    renderer->setViewport(width, height);
172}
173
174static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
175        OpenGLRenderer* renderer, jboolean opaque) {
176    renderer->prepare(opaque);
177}
178
179static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
180        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
181        jboolean opaque) {
182    renderer->prepareDirty(left, top, right, bottom, opaque);
183}
184
185static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
186        OpenGLRenderer* renderer) {
187    renderer->finish();
188}
189
190static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
191        OpenGLRenderer* renderer, Functor *functor) {
192    android::uirenderer::Rect dirty;
193    return renderer->callDrawGLFunction(functor, dirty);
194}
195
196static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
197    return Caches::getInstance().maxTextureSize;
198}
199
200static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
201    return Caches::getInstance().maxTextureSize;
202}
203
204// ----------------------------------------------------------------------------
205// State
206// ----------------------------------------------------------------------------
207
208static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
209        jint flags) {
210    return renderer->save(flags);
211}
212
213static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
214        OpenGLRenderer* renderer) {
215    return renderer->getSaveCount();
216}
217
218static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
219        OpenGLRenderer* renderer) {
220    renderer->restore();
221}
222
223static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
224        OpenGLRenderer* renderer, jint saveCount) {
225    renderer->restoreToCount(saveCount);
226}
227
228// ----------------------------------------------------------------------------
229// Layers
230// ----------------------------------------------------------------------------
231
232static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
233        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
234        SkPaint* paint, jint saveFlags) {
235    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
236}
237
238static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
239        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
240    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
241    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
242            paint, saveFlags);
243}
244
245static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
246        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
247        jint alpha, jint saveFlags) {
248    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
249}
250
251static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
252        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
253    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
254    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
255            alpha, saveFlags);
256}
257
258// ----------------------------------------------------------------------------
259// Clipping
260// ----------------------------------------------------------------------------
261
262static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
263        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
264        SkCanvas::EdgeType edge) {
265    return renderer->quickReject(left, top, right, bottom);
266}
267
268static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
269        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
270        SkRegion::Op op) {
271    return renderer->clipRect(left, top, right, bottom, op);
272}
273
274static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
275        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
276        SkRegion::Op op) {
277    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
278}
279
280static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
281        OpenGLRenderer* renderer, jobject rect) {
282    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
283
284    env->CallVoidMethod(rect, gRectClassInfo.set,
285            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
286
287    return !bounds.isEmpty();
288}
289
290// ----------------------------------------------------------------------------
291// Transforms
292// ----------------------------------------------------------------------------
293
294static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
295        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
296    renderer->translate(dx, dy);
297}
298
299static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
300        OpenGLRenderer* renderer, jfloat degrees) {
301    renderer->rotate(degrees);
302}
303
304static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
305        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
306    renderer->scale(sx, sy);
307}
308
309static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
310        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
311    renderer->skew(sx, sy);
312}
313
314static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
315        OpenGLRenderer* renderer, SkMatrix* matrix) {
316    renderer->setMatrix(matrix);
317}
318
319static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
320        OpenGLRenderer* renderer, SkMatrix* matrix) {
321    renderer->getMatrix(matrix);
322}
323
324static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
325        OpenGLRenderer* renderer, SkMatrix* matrix) {
326    renderer->concatMatrix(matrix);
327}
328
329// ----------------------------------------------------------------------------
330// Drawing
331// ----------------------------------------------------------------------------
332
333static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
334        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
335        float top, SkPaint* paint) {
336    // This object allows the renderer to allocate a global JNI ref to the buffer object.
337    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
338
339    renderer->drawBitmap(bitmap, left, top, paint);
340}
341
342static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
343        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
344        float srcLeft, float srcTop, float srcRight, float srcBottom,
345        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
346    // This object allows the renderer to allocate a global JNI ref to the buffer object.
347    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
348
349    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
350            dstLeft, dstTop, dstRight, dstBottom, paint);
351}
352
353static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
354        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
355        SkPaint* paint) {
356    // This object allows the renderer to allocate a global JNI ref to the buffer object.
357    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
358
359    renderer->drawBitmap(bitmap, matrix, paint);
360}
361
362static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
363        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
364        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
365        jintArray colors, jint colorOffset, SkPaint* paint) {
366    // This object allows the renderer to allocate a global JNI ref to the buffer object.
367    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
368
369    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
370    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
371
372    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
373
374    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
375    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
376}
377
378static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
379        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
380        float left, float top, float right, float bottom, SkPaint* paint) {
381    // This object allows the renderer to allocate a global JNI ref to the buffer object.
382    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
383
384    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
385    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
386    Res_png_9patch::deserialize(patch);
387
388    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
389            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
390            left, top, right, bottom, paint);
391
392    env->ReleaseByteArrayElements(chunks, storage, 0);
393}
394
395static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
396        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
397    renderer->drawColor(color, mode);
398}
399
400static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
401        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
402        SkPaint* paint) {
403    renderer->drawRect(left, top, right, bottom, paint);
404}
405
406static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
407        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
408        jfloat rx, jfloat ry, SkPaint* paint) {
409    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
410}
411
412static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
413        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
414    renderer->drawCircle(x, y, radius, paint);
415}
416
417static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
418        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
419        SkPaint* paint) {
420    renderer->drawOval(left, top, right, bottom, paint);
421}
422
423static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
424        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
425        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
426    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
427}
428
429static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
430        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
431    SkRegion::Iterator it(*region);
432    while (!it.done()) {
433        const SkIRect& r = it.rect();
434        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
435        it.next();
436    }
437}
438
439static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
440        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
441    jfloat* storage = env->GetFloatArrayElements(points, NULL);
442    renderer->drawPoints(storage + offset, count, paint);
443    env->ReleaseFloatArrayElements(points, storage, 0);
444}
445
446static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
447        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
448    renderer->drawPath(path, paint);
449}
450
451static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
452        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
453    jfloat* storage = env->GetFloatArrayElements(points, NULL);
454    renderer->drawLines(storage + offset, count, paint);
455    env->ReleaseFloatArrayElements(points, storage, 0);
456}
457
458// ----------------------------------------------------------------------------
459// Shaders and color filters
460// ----------------------------------------------------------------------------
461
462static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
463        OpenGLRenderer* renderer, jint modifiers) {
464    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
465    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
466    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
467}
468
469static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
470        OpenGLRenderer* renderer, SkiaShader* shader) {
471    renderer->setupShader(shader);
472}
473
474static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
475        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
476    renderer->setupColorFilter(filter);
477}
478
479static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
480        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
481    renderer->setupShadow(radius, dx, dy, color);
482}
483
484// ----------------------------------------------------------------------------
485// Text
486// ----------------------------------------------------------------------------
487
488static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
489        jfloat x, jfloat y, int flags, SkPaint* paint) {
490    sp<TextLayoutCacheValue> value;
491#if USE_TEXT_LAYOUT_CACHE
492    value = TextLayoutCache::getInstance().getValue(paint, text, 0, count, count, flags);
493    if (value == NULL) {
494        LOGE("Cannot get TextLayoutCache value for text = '%s'",
495                String8(text, count).string());
496        return;
497    }
498#else
499    value = new TextLayoutCacheValue(count);
500    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
501            text, 0, count, count, flags);
502#endif
503    const jchar* glyphs = value->getGlyphs();
504    size_t glyphsCount = value->getGlyphsCount();
505    int bytesCount = glyphsCount * sizeof(jchar);
506    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
507}
508
509static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
510        jint start, jint count, jint contextCount, jfloat x, jfloat y,
511        int flags, SkPaint* paint) {
512    sp<TextLayoutCacheValue> value;
513#if USE_TEXT_LAYOUT_CACHE
514    value = TextLayoutCache::getInstance().getValue(paint, text, start, count, contextCount, flags);
515    if (value == NULL) {
516        LOGE("Cannot get TextLayoutCache value for text = '%s'",
517                String8(text + start, count).string());
518        return;
519    }
520#else
521    value = new TextLayoutCacheValue(count);
522    TextLayoutEngine::getInstance().computeValues(value.get(), paint,
523            text, start, count, contextCount, flags);
524#endif
525    const jchar* glyphs = value->getGlyphs();
526    size_t glyphsCount = value->getGlyphsCount();
527    int bytesCount = glyphsCount * sizeof(jchar);
528    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
529}
530
531static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
532        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
533        jfloat x, jfloat y, jint flags, SkPaint* paint) {
534    jchar* textArray = env->GetCharArrayElements(text, NULL);
535    renderText(renderer, textArray + index, count, x, y, flags, paint);
536    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
537}
538
539static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
540        OpenGLRenderer* renderer, jstring text, jint start, jint end,
541        jfloat x, jfloat y, jint flags, SkPaint* paint) {
542    const jchar* textArray = env->GetStringChars(text, NULL);
543    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
544    env->ReleaseStringChars(text, textArray);
545}
546
547static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
548        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
549        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
550        SkPaint* paint) {
551    jchar* textArray = env->GetCharArrayElements(text, NULL);
552    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
553            count, contextCount, x, y, dirFlags, paint);
554    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
555 }
556
557static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
558        OpenGLRenderer* renderer, jstring text, jint start, jint end,
559        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
560        SkPaint* paint) {
561    const jchar* textArray = env->GetStringChars(text, NULL);
562    jint count = end - start;
563    jint contextCount = contextEnd - contextStart;
564    renderTextRun(renderer, textArray + contextStart, start - contextStart,
565            count, contextCount, x, y, dirFlags, paint);
566    env->ReleaseStringChars(text, textArray);
567}
568
569// ----------------------------------------------------------------------------
570// Display lists
571// ----------------------------------------------------------------------------
572
573static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
574        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
575    return renderer->getDisplayList(displayList);
576}
577
578static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
579        jobject clazz, DisplayList* displayList) {
580    return displayList->getSize();
581}
582
583static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
584        jobject clazz) {
585    return new DisplayListRenderer;
586}
587
588static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
589        jobject clazz, DisplayListRenderer* renderer) {
590    renderer->reset();
591}
592
593static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
594        jobject clazz, DisplayList* displayList) {
595    delete displayList;
596}
597
598static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
599        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
600        jint width, jint height, jobject dirty) {
601    android::uirenderer::Rect bounds;
602    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
603    if (redraw && dirty != NULL) {
604        env->CallVoidMethod(dirty, gRectClassInfo.set,
605                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
606    }
607    return redraw;
608}
609
610static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
611        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
612    renderer->outputDisplayList(displayList);
613}
614
615// ----------------------------------------------------------------------------
616// Layers
617// ----------------------------------------------------------------------------
618
619static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
620        OpenGLRenderer* renderer) {
621    renderer->interrupt();
622}
623
624static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
625        OpenGLRenderer* renderer) {
626    renderer->resume();
627}
628
629static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
630        jobject clazz, Layer* layer) {
631    if (layer) {
632        return new LayerRenderer(layer);
633    }
634    return NULL;
635}
636
637static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
638        jboolean isOpaque, jintArray layerInfo) {
639    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
640
641    if (layer) {
642        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
643        storage[0] = layer->getTexture();
644        env->ReleaseIntArrayElements(layerInfo, storage, 0);
645    }
646
647    return layer;
648}
649
650static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
651        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
652    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
653
654    if (layer) {
655        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
656        storage[0] = layer->getWidth();
657        storage[1] = layer->getHeight();
658        env->ReleaseIntArrayElements(layerInfo, storage, 0);
659    }
660
661    return layer;
662}
663
664static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
665        Layer* layer, jint width, jint height, jintArray layerInfo) {
666    LayerRenderer::resizeLayer(layer, width, height);
667
668    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
669    storage[0] = layer->getWidth();
670    storage[1] = layer->getHeight();
671    env->ReleaseIntArrayElements(layerInfo, storage, 0);
672}
673
674static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
675        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
676    float transform[16];
677    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
678
679    surfaceTexture->updateTexImage();
680    surfaceTexture->getTransformMatrix(transform);
681    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
682
683    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
684}
685
686static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
687        Layer* layer, SkMatrix* matrix) {
688
689    layer->getTransform().load(*matrix);
690}
691
692static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
693    LayerRenderer::destroyLayer(layer);
694}
695
696static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
697        jobject clazz, Layer* layer) {
698    LayerRenderer::destroyLayerDeferred(layer);
699}
700
701static void android_view_GLES20Canvas_flushLayer(JNIEnv* env, jobject clazz, Layer* layer) {
702    LayerRenderer::flushLayer(layer);
703}
704
705static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
706        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
707    renderer->drawLayer(layer, x, y, paint);
708}
709
710static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
711        Layer* layer, SkBitmap* bitmap) {
712    return LayerRenderer::copyLayer(layer, bitmap);
713}
714
715#endif // USE_OPENGL_RENDERER
716
717// ----------------------------------------------------------------------------
718// Common
719// ----------------------------------------------------------------------------
720
721static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
722#ifdef USE_OPENGL_RENDERER
723    char prop[PROPERTY_VALUE_MAX];
724    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
725        // not in the emulator
726        return JNI_TRUE;
727    }
728    // In the emulator this property will be set to 1 when hardware GLES is
729    // enabled, 0 otherwise. On old emulator versions it will be undefined.
730    property_get("ro.kernel.qemu.gles", prop, "0");
731    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
732#else
733    return JNI_FALSE;
734#endif
735}
736
737// ----------------------------------------------------------------------------
738// Logging
739// ----------------------------------------------------------------------------
740
741static void
742android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
743#ifdef USE_OPENGL_RENDERER
744    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
745    android::uirenderer::DisplayList::outputLogBuffer(fd);
746#endif // USE_OPENGL_RENDERER
747}
748
749// ----------------------------------------------------------------------------
750// JNI Glue
751// ----------------------------------------------------------------------------
752
753const char* const kClassPathName = "android/view/GLES20Canvas";
754
755static JNINativeMethod gMethods[] = {
756    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
757
758#ifdef USE_OPENGL_RENDERER
759    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
760    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
761    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
762    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
763    { "nInitCaches",            "()V",         (void*) android_view_GLES20Canvas_initCaches },
764    { "nTerminateCaches",       "()V",         (void*) android_view_GLES20Canvas_terminateCaches },
765
766    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
767    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
768    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
769    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
770    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
771    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
772
773    { "nCallDrawGLFunction", "(II)Z",
774            (void*) android_view_GLES20Canvas_callDrawGLFunction },
775
776    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
777    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
778    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
779    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
780
781    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
782    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
783    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
784    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
785
786    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
787    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
788    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
789
790    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
791    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
792    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
793    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
794
795    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
796    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
797    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
798
799    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
800    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
801    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
802
803    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
804
805    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
806
807    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
808    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
809    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
810    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
811    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
812    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
813    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
814    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
815
816    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
817    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
818
819    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
820    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
821    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
822    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
823
824    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
825    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
826            (void*) android_view_GLES20Canvas_drawText },
827
828    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
829    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
830            (void*) android_view_GLES20Canvas_drawTextRun },
831
832    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
833            (void*) android_view_GLES20Canvas_getClipBounds },
834
835    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
836    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
837    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
838    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
839    { "nResetDisplayListRenderer", "(I)V",     (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
840    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
841                                               (void*) android_view_GLES20Canvas_drawDisplayList },
842    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
843    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
844    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
845
846    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
847    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
848    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
849    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
850    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
851                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
852    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
853    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
854    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
855    { "nFlushLayer",             "(I)V",       (void*) android_view_GLES20Canvas_flushLayer },
856    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
857    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
858
859    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
860    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
861
862#endif
863};
864
865static JNINativeMethod gActivityThreadMethods[] = {
866    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
867                                               (void*) android_app_ActivityThread_dumpGraphics }
868};
869
870
871#ifdef USE_OPENGL_RENDERER
872    #define FIND_CLASS(var, className) \
873            var = env->FindClass(className); \
874            LOG_FATAL_IF(! var, "Unable to find class " className);
875
876    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
877            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
878            LOG_FATAL_IF(! var, "Unable to find method " methodName);
879#else
880    #define FIND_CLASS(var, className)
881    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
882#endif
883
884int register_android_view_GLES20Canvas(JNIEnv* env) {
885    jclass clazz;
886    FIND_CLASS(clazz, "android/graphics/Rect");
887    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
888
889    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
890}
891
892const char* const kActivityThreadPathName = "android/app/ActivityThread";
893
894int register_android_app_ActivityThread(JNIEnv* env) {
895    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
896            gActivityThreadMethods, NELEM(gActivityThreadMethods));
897}
898
899};
900