android_view_GLES20Canvas.cpp revision af033caf26ef4eca99c4024e59def7e42c3fa4cd 
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 <utils/ResourceTypes.h>
26
27#include <gui/SurfaceTexture.h>
28
29#include <SkBitmap.h>
30#include <SkCanvas.h>
31#include <SkMatrix.h>
32#include <SkPaint.h>
33#include <SkRegion.h>
34#include <SkScalerContext.h>
35#include <SkTemplates.h>
36#include <SkXfermode.h>
37
38#include <DisplayListRenderer.h>
39#include <LayerRenderer.h>
40#include <OpenGLRenderer.h>
41#include <SkiaShader.h>
42#include <SkiaColorFilter.h>
43#include <Rect.h>
44
45#include <TextLayout.h>
46
47namespace android {
48
49using namespace uirenderer;
50
51/**
52 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
53 *       devices. This means all the logic must be compiled only when the
54 *       preprocessor variable USE_OPENGL_RENDERER is defined.
55 */
56#ifdef USE_OPENGL_RENDERER
57
58///////////////////////////////////////////////////////////////////////////////
59// Defines
60///////////////////////////////////////////////////////////////////////////////
61
62// Debug
63#define DEBUG_RENDERER 0
64
65// Debug
66#if DEBUG_RENDERER
67    #define RENDERER_LOGD(...) LOGD(__VA_ARGS__)
68#else
69    #define RENDERER_LOGD(...)
70#endif
71
72#define MODIFIER_SHADOW 1
73#define MODIFIER_SHADER 2
74#define MODIFIER_COLOR_FILTER 4
75
76// ----------------------------------------------------------------------------
77
78static struct {
79    jmethodID set;
80} gRectClassInfo;
81
82// ----------------------------------------------------------------------------
83// Misc
84// ----------------------------------------------------------------------------
85
86static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
87    EGLDisplay display = eglGetCurrentDisplay();
88    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
89
90    eglGetError();
91    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
92
93    EGLint error = eglGetError();
94    if (error != EGL_SUCCESS) {
95        RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
96    }
97
98    return error == EGL_SUCCESS;
99}
100
101static jboolean android_view_GLES20Canvas_isBackBufferPreserved(JNIEnv* env, jobject clazz) {
102    EGLDisplay display = eglGetCurrentDisplay();
103    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
104    EGLint value;
105
106    eglGetError();
107    eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value);
108
109    EGLint error = eglGetError();
110    if (error != EGL_SUCCESS) {
111        RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error);
112    }
113
114    return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED;
115}
116
117// ----------------------------------------------------------------------------
118// Constructors
119// ----------------------------------------------------------------------------
120
121static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
122    RENDERER_LOGD("Create OpenGLRenderer");
123    return new OpenGLRenderer;
124}
125
126static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
127        OpenGLRenderer* renderer) {
128    RENDERER_LOGD("Destroy OpenGLRenderer");
129    delete renderer;
130}
131
132// ----------------------------------------------------------------------------
133// Setup
134// ----------------------------------------------------------------------------
135
136static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
137        OpenGLRenderer* renderer, jint width, jint height) {
138    renderer->setViewport(width, height);
139}
140
141static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
142        OpenGLRenderer* renderer, jboolean opaque) {
143    renderer->prepare(opaque);
144}
145
146static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
147        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
148        jboolean opaque) {
149    renderer->prepareDirty(left, top, right, bottom, opaque);
150}
151
152static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
153        OpenGLRenderer* renderer) {
154    renderer->finish();
155}
156
157static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
158        OpenGLRenderer* renderer, Functor *functor) {
159    android::uirenderer::Rect dirty;
160    return renderer->callDrawGLFunction(functor, dirty);
161}
162
163// ----------------------------------------------------------------------------
164// State
165// ----------------------------------------------------------------------------
166
167static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
168        jint flags) {
169    return renderer->save(flags);
170}
171
172static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
173        OpenGLRenderer* renderer) {
174    return renderer->getSaveCount();
175}
176
177static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
178        OpenGLRenderer* renderer) {
179    renderer->restore();
180}
181
182static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
183        OpenGLRenderer* renderer, jint saveCount) {
184    renderer->restoreToCount(saveCount);
185}
186
187// ----------------------------------------------------------------------------
188// Layers
189// ----------------------------------------------------------------------------
190
191static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
192        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
193        SkPaint* paint, jint saveFlags) {
194    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
195}
196
197static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
198        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
199        jint alpha, jint saveFlags) {
200    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
201}
202
203// ----------------------------------------------------------------------------
204// Clipping
205// ----------------------------------------------------------------------------
206
207static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
208        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
209        SkCanvas::EdgeType edge) {
210    return renderer->quickReject(left, top, right, bottom);
211}
212
213static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
214        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
215        SkRegion::Op op) {
216    return renderer->clipRect(left, top, right, bottom, op);
217}
218
219static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
220        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
221        SkRegion::Op op) {
222    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
223}
224
225static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
226        OpenGLRenderer* renderer, jobject rect) {
227    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
228
229    env->CallVoidMethod(rect, gRectClassInfo.set,
230            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
231
232    return !bounds.isEmpty();
233}
234
235// ----------------------------------------------------------------------------
236// Transforms
237// ----------------------------------------------------------------------------
238
239static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
240        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
241    renderer->translate(dx, dy);
242}
243
244static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
245        OpenGLRenderer* renderer, jfloat degrees) {
246    renderer->rotate(degrees);
247}
248
249static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
250        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
251    renderer->scale(sx, sy);
252}
253
254static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
255        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
256    renderer->skew(sx, sy);
257}
258
259static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
260        OpenGLRenderer* renderer, SkMatrix* matrix) {
261    renderer->setMatrix(matrix);
262}
263
264static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
265        jobject clazz, OpenGLRenderer* renderer) {
266    return renderer->getMatrix();
267}
268
269static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
270        OpenGLRenderer* renderer, SkMatrix* matrix) {
271    renderer->getMatrix(matrix);
272}
273
274static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
275        OpenGLRenderer* renderer, SkMatrix* matrix) {
276    renderer->concatMatrix(matrix);
277}
278
279// ----------------------------------------------------------------------------
280// Drawing
281// ----------------------------------------------------------------------------
282
283static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
284        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
285        float top, SkPaint* paint) {
286    // This object allows the renderer to allocate a global JNI ref to the buffer object.
287    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
288
289    renderer->drawBitmap(bitmap, left, top, paint);
290}
291
292static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
293        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
294        float srcLeft, float srcTop, float srcRight, float srcBottom,
295        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
296    // This object allows the renderer to allocate a global JNI ref to the buffer object.
297    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
298
299    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
300            dstLeft, dstTop, dstRight, dstBottom, paint);
301}
302
303static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
304        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
305        SkPaint* paint) {
306    // This object allows the renderer to allocate a global JNI ref to the buffer object.
307    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
308
309    renderer->drawBitmap(bitmap, matrix, paint);
310}
311
312static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
313        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
314        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
315        jintArray colors, jint colorOffset, SkPaint* paint) {
316    // This object allows the renderer to allocate a global JNI ref to the buffer object.
317    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
318
319    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
320    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
321
322    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
323
324    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
325    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
326}
327
328static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
329        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
330        float left, float top, float right, float bottom, SkPaint* paint) {
331    // This object allows the renderer to allocate a global JNI ref to the buffer object.
332    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
333
334    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
335    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
336    Res_png_9patch::deserialize(patch);
337
338    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
339            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
340            left, top, right, bottom, paint);
341
342    env->ReleaseByteArrayElements(chunks, storage, 0);
343}
344
345static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
346        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
347    renderer->drawColor(color, mode);
348}
349
350static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
351        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
352        SkPaint* paint) {
353    renderer->drawRect(left, top, right, bottom, paint);
354}
355
356static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
357        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
358        jfloat rx, jfloat ry, SkPaint* paint) {
359    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
360}
361
362static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
363        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
364    renderer->drawCircle(x, y, radius, paint);
365}
366
367static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
368        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
369        SkPaint* paint) {
370    renderer->drawOval(left, top, right, bottom, paint);
371}
372
373static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
374        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
375        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
376    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
377}
378
379static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
380        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
381    SkRegion::Iterator it(*region);
382    while (!it.done()) {
383        const SkIRect& r = it.rect();
384        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
385        it.next();
386    }
387}
388
389static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
390        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
391    jfloat* storage = env->GetFloatArrayElements(points, NULL);
392    renderer->drawPoints(storage + offset, count, paint);
393    env->ReleaseFloatArrayElements(points, storage, 0);
394}
395
396static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
397        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
398    renderer->drawPath(path, paint);
399}
400
401static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
402        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
403    jfloat* storage = env->GetFloatArrayElements(points, NULL);
404    renderer->drawLines(storage + offset, count, paint);
405    env->ReleaseFloatArrayElements(points, storage, 0);
406}
407
408// ----------------------------------------------------------------------------
409// Shaders and color filters
410// ----------------------------------------------------------------------------
411
412static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
413        OpenGLRenderer* renderer, jint modifiers) {
414    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
415    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
416    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
417}
418
419static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
420        OpenGLRenderer* renderer, SkiaShader* shader) {
421    renderer->setupShader(shader);
422}
423
424static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
425        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
426    renderer->setupColorFilter(filter);
427}
428
429static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
430        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
431    renderer->setupShadow(radius, dx, dy, color);
432}
433
434// ----------------------------------------------------------------------------
435// Text
436// ----------------------------------------------------------------------------
437
438static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
439        jfloat x, jfloat y, int flags, SkPaint* paint) {
440#if RTL_USE_HARFBUZZ
441    sp<TextLayoutCacheValue> value;
442#if USE_TEXT_LAYOUT_CACHE
443    value = gTextLayoutCache.getValue(paint, text, 0, count, count, flags);
444    if (value == NULL) {
445        LOGE("Cannot get TextLayoutCache value");
446        return ;
447    }
448#else
449    value = new TextLayoutCacheValue();
450    value->computeValues(paint, text, 0, count, count, flags);
451#endif
452#if DEBUG_GLYPHS
453    logGlyphs(value);
454#endif
455    const jchar* glyphArray = value->getGlyphs();
456    int glyphCount = value->getGlyphsCount();
457    int bytesCount = glyphCount * sizeof(jchar);
458    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
459#else
460    const jchar *workText;
461    jchar* buffer = NULL;
462    int32_t workBytes;
463    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
464        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
465        free(buffer);
466    }
467#endif
468}
469
470static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
471        jint start, jint count, jint contextCount, jfloat x, jfloat y,
472        int flags, SkPaint* paint) {
473#if RTL_USE_HARFBUZZ
474    sp<TextLayoutCacheValue> value;
475#if USE_TEXT_LAYOUT_CACHE
476    value = gTextLayoutCache.getValue(paint, text, start, count, contextCount, flags);
477    if (value == NULL) {
478        LOGE("Cannot get TextLayoutCache value");
479        return ;
480    }
481#else
482    value = new TextLayoutCacheValue();
483    value->computeValues(paint, text, start, count, contextCount, flags);
484#endif
485#if DEBUG_GLYPHS
486    logGlyphs(value);
487#endif
488    const jchar* glyphArray = value->getGlyphs();
489    int glyphCount = value->getGlyphsCount();
490    int bytesCount = glyphCount * sizeof(jchar);
491    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
492#else
493    uint8_t rtl = flags & 0x1;
494    if (rtl) {
495        SkAutoSTMalloc<80, jchar> buffer(contextCount);
496        jchar* shaped = buffer.get();
497        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
498            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
499        } else {
500            LOGW("drawTextRun error");
501        }
502    } else {
503        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
504    }
505#endif
506}
507
508static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
509        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
510        jfloat x, jfloat y, jint flags, SkPaint* paint) {
511    jchar* textArray = env->GetCharArrayElements(text, NULL);
512    renderText(renderer, textArray + index, count, x, y, flags, paint);
513    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
514}
515
516static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
517        OpenGLRenderer* renderer, jstring text, jint start, jint end,
518        jfloat x, jfloat y, jint flags, SkPaint* paint) {
519    const jchar* textArray = env->GetStringChars(text, NULL);
520    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
521    env->ReleaseStringChars(text, textArray);
522}
523
524static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
525        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
526        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
527        SkPaint* paint) {
528    jchar* textArray = env->GetCharArrayElements(text, NULL);
529    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
530            count, contextCount, x, y, dirFlags, paint);
531    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
532 }
533
534static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
535        OpenGLRenderer* renderer, jstring text, jint start, jint end,
536        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
537        SkPaint* paint) {
538    const jchar* textArray = env->GetStringChars(text, NULL);
539    jint count = end - start;
540    jint contextCount = contextEnd - contextStart;
541    renderTextRun(renderer, textArray + contextStart, start - contextStart,
542            count, contextCount, x, y, dirFlags, paint);
543    env->ReleaseStringChars(text, textArray);
544}
545
546// ----------------------------------------------------------------------------
547// Display lists
548// ----------------------------------------------------------------------------
549
550static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
551        jobject clazz, DisplayListRenderer* renderer) {
552    return renderer->getDisplayList();
553}
554
555static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
556        jobject clazz, DisplayListRenderer* renderer) {
557    if (renderer == NULL) {
558        renderer = new DisplayListRenderer;
559    } else {
560        renderer->reset();
561    }
562    return renderer;
563}
564
565static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
566        jobject clazz, DisplayList* displayList) {
567    delete displayList;
568}
569
570static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
571        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
572        jint width, jint height, jobject dirty) {
573    android::uirenderer::Rect bounds;
574    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
575    if (redraw && dirty != NULL) {
576        env->CallVoidMethod(dirty, gRectClassInfo.set,
577                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
578    }
579    return redraw;
580}
581
582static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
583        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
584    renderer->outputDisplayList(displayList);
585}
586
587// ----------------------------------------------------------------------------
588// Layers
589// ----------------------------------------------------------------------------
590
591static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
592        OpenGLRenderer* renderer) {
593    renderer->interrupt();
594}
595
596static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
597        OpenGLRenderer* renderer) {
598    renderer->resume();
599}
600
601static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
602        jobject clazz, Layer* layer) {
603    if (layer) {
604        return new LayerRenderer(layer);
605    }
606    return NULL;
607}
608
609static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
610        jintArray layerInfo) {
611    Layer* layer = LayerRenderer::createTextureLayer();
612
613    if (layer) {
614        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
615        storage[0] = layer->texture;
616        env->ReleaseIntArrayElements(layerInfo, storage, 0);
617    }
618
619    return layer;
620}
621
622static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
623        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
624    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
625
626    if (layer) {
627        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
628        storage[0] = layer->width;
629        storage[1] = layer->height;
630        env->ReleaseIntArrayElements(layerInfo, storage, 0);
631    }
632
633    return layer;
634}
635
636static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
637        Layer* layer, jint width, jint height, jintArray layerInfo) {
638    LayerRenderer::resizeLayer(layer, width, height);
639
640    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
641    storage[0] = layer->width;
642    storage[1] = layer->height;
643    env->ReleaseIntArrayElements(layerInfo, storage, 0);
644}
645
646static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
647        Layer* layer, jint width, jint height, SurfaceTexture* surface) {
648    float transform[16];
649    surface->updateTexImage();
650    surface->getTransformMatrix(transform);
651    GLenum renderTarget = surface->getCurrentTextureTarget();
652
653    LayerRenderer::updateTextureLayer(layer, width, height, renderTarget, transform);
654}
655
656static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
657    LayerRenderer::destroyLayer(layer);
658}
659
660static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
661        jobject clazz, Layer* layer) {
662    LayerRenderer::destroyLayerDeferred(layer);
663}
664
665static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
666        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
667    renderer->drawLayer(layer, x, y, paint);
668}
669
670#endif // USE_OPENGL_RENDERER
671
672// ----------------------------------------------------------------------------
673// Common
674// ----------------------------------------------------------------------------
675
676static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
677#ifdef USE_OPENGL_RENDERER
678    return JNI_TRUE;
679#else
680    return JNI_FALSE;
681#endif
682}
683
684// ----------------------------------------------------------------------------
685// Logging
686// ----------------------------------------------------------------------------
687
688static void
689android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor)
690{
691#ifdef USE_OPENGL_RENDERER
692    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
693    android::uirenderer::DisplayList::outputLogBuffer(fd);
694#endif // USE_OPENGL_RENDERER
695}
696
697// ----------------------------------------------------------------------------
698// JNI Glue
699// ----------------------------------------------------------------------------
700
701const char* const kClassPathName = "android/view/GLES20Canvas";
702
703static JNINativeMethod gMethods[] = {
704    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
705
706#ifdef USE_OPENGL_RENDERER
707    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
708    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
709
710    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
711    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
712    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
713    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
714    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
715    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
716
717    { "nCallDrawGLFunction", "(II)Z",
718            (void*) android_view_GLES20Canvas_callDrawGLFunction },
719
720    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
721    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
722    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
723    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
724
725    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
726    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
727
728    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
729    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
730    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
731
732    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
733    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
734    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
735    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
736
737    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
738    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
739    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
740    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
741
742    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
743    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
744    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
745
746    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
747
748    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
749
750    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
751    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
752    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
753    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
754    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
755    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
756    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
757    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
758
759    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
760    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
761
762    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
763    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
764    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
765    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
766
767    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
768    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
769            (void*) android_view_GLES20Canvas_drawText },
770
771    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
772    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
773            (void*) android_view_GLES20Canvas_drawTextRun },
774
775    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
776            (void*) android_view_GLES20Canvas_getClipBounds },
777
778    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
779    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
780    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
781    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
782                                               (void*) android_view_GLES20Canvas_drawDisplayList },
783    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
784    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
785    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
786
787    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
788    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
789    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
790    { "nCreateTextureLayer",     "([I)I",      (void*) android_view_GLES20Canvas_createTextureLayer },
791    { "nUpdateTextureLayer",     "(IIII)V",    (void*) android_view_GLES20Canvas_updateTextureLayer },
792    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
793    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
794    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
795
796#endif
797};
798
799static JNINativeMethod gActivityThreadMethods[] = {
800    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
801                                               (void*) android_app_ActivityThread_dumpGraphics }
802};
803
804
805#ifdef USE_OPENGL_RENDERER
806    #define FIND_CLASS(var, className) \
807            var = env->FindClass(className); \
808            LOG_FATAL_IF(! var, "Unable to find class " className);
809
810    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
811            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
812            LOG_FATAL_IF(! var, "Unable to find method " methodName);
813#else
814    #define FIND_CLASS(var, className)
815    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
816#endif
817
818int register_android_view_GLES20Canvas(JNIEnv* env) {
819    jclass clazz;
820    FIND_CLASS(clazz, "android/graphics/Rect");
821    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
822
823    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
824}
825
826const char* const kActivityThreadPathName = "android/app/ActivityThread";
827
828int register_android_app_ActivityThread(JNIEnv* env)
829{
830    return AndroidRuntime::registerNativeMethods(
831            env, kActivityThreadPathName,
832            gActivityThreadMethods, NELEM(gActivityThreadMethods));
833}
834
835};
836