android_view_GLES20Canvas.cpp revision 0bc6eb30bc09b4c49193229cf3c0de28341be6f4 
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
118// ----------------------------------------------------------------------------
119// Constructors
120// ----------------------------------------------------------------------------
121
122static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
123    RENDERER_LOGD("Create OpenGLRenderer");
124    return new OpenGLRenderer;
125}
126
127static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
128        OpenGLRenderer* renderer) {
129    RENDERER_LOGD("Destroy OpenGLRenderer");
130    delete renderer;
131}
132
133// ----------------------------------------------------------------------------
134// Setup
135// ----------------------------------------------------------------------------
136
137static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
138        OpenGLRenderer* renderer, jint width, jint height) {
139    renderer->setViewport(width, height);
140}
141
142static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
143        OpenGLRenderer* renderer, jboolean opaque) {
144    renderer->prepare(opaque);
145}
146
147static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
148        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
149        jboolean opaque) {
150    renderer->prepareDirty(left, top, right, bottom, opaque);
151}
152
153static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
154        OpenGLRenderer* renderer) {
155    renderer->finish();
156}
157
158static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
159        OpenGLRenderer* renderer, Functor *functor) {
160    android::uirenderer::Rect dirty;
161    return renderer->callDrawGLFunction(functor, dirty);
162}
163
164// ----------------------------------------------------------------------------
165// State
166// ----------------------------------------------------------------------------
167
168static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
169        jint flags) {
170    return renderer->save(flags);
171}
172
173static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
174        OpenGLRenderer* renderer) {
175    return renderer->getSaveCount();
176}
177
178static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
179        OpenGLRenderer* renderer) {
180    renderer->restore();
181}
182
183static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
184        OpenGLRenderer* renderer, jint saveCount) {
185    renderer->restoreToCount(saveCount);
186}
187
188// ----------------------------------------------------------------------------
189// Layers
190// ----------------------------------------------------------------------------
191
192static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
193        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
194        SkPaint* paint, jint saveFlags) {
195    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
196}
197
198static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
199        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
200        jint alpha, jint saveFlags) {
201    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
202}
203
204// ----------------------------------------------------------------------------
205// Clipping
206// ----------------------------------------------------------------------------
207
208static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
209        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
210        SkCanvas::EdgeType edge) {
211    return renderer->quickReject(left, top, right, bottom);
212}
213
214static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
215        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
216        SkRegion::Op op) {
217    return renderer->clipRect(left, top, right, bottom, op);
218}
219
220static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
221        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
222        SkRegion::Op op) {
223    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
224}
225
226static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
227        OpenGLRenderer* renderer, jobject rect) {
228    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
229
230    env->CallVoidMethod(rect, gRectClassInfo.set,
231            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
232
233    return !bounds.isEmpty();
234}
235
236// ----------------------------------------------------------------------------
237// Transforms
238// ----------------------------------------------------------------------------
239
240static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
241        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
242    renderer->translate(dx, dy);
243}
244
245static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
246        OpenGLRenderer* renderer, jfloat degrees) {
247    renderer->rotate(degrees);
248}
249
250static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
251        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
252    renderer->scale(sx, sy);
253}
254
255static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
256        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
257    renderer->skew(sx, sy);
258}
259
260static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
261        OpenGLRenderer* renderer, SkMatrix* matrix) {
262    renderer->setMatrix(matrix);
263}
264
265static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
266        jobject clazz, OpenGLRenderer* renderer) {
267    return renderer->getMatrix();
268}
269
270static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
271        OpenGLRenderer* renderer, SkMatrix* matrix) {
272    renderer->getMatrix(matrix);
273}
274
275static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
276        OpenGLRenderer* renderer, SkMatrix* matrix) {
277    renderer->concatMatrix(matrix);
278}
279
280// ----------------------------------------------------------------------------
281// Drawing
282// ----------------------------------------------------------------------------
283
284static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
285        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
286        float top, SkPaint* paint) {
287    // This object allows the renderer to allocate a global JNI ref to the buffer object.
288    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
289
290    renderer->drawBitmap(bitmap, left, top, paint);
291}
292
293static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
294        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
295        float srcLeft, float srcTop, float srcRight, float srcBottom,
296        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
297    // This object allows the renderer to allocate a global JNI ref to the buffer object.
298    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
299
300    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
301            dstLeft, dstTop, dstRight, dstBottom, paint);
302}
303
304static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
305        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
306        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, matrix, paint);
311}
312
313static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
314        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
315        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
316        jintArray colors, jint colorOffset, 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    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
321    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
322
323    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
324
325    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
326    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
327}
328
329static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
330        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
331        float left, float top, float right, float bottom, SkPaint* paint) {
332    // This object allows the renderer to allocate a global JNI ref to the buffer object.
333    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
334
335    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
336    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
337    Res_png_9patch::deserialize(patch);
338
339    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
340            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
341            left, top, right, bottom, paint);
342
343    env->ReleaseByteArrayElements(chunks, storage, 0);
344}
345
346static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
347        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
348    renderer->drawColor(color, mode);
349}
350
351static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
352        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
353        SkPaint* paint) {
354    renderer->drawRect(left, top, right, bottom, paint);
355}
356
357static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
358        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
359        jfloat rx, jfloat ry, SkPaint* paint) {
360    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
361}
362
363static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
364        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
365    renderer->drawCircle(x, y, radius, paint);
366}
367
368static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
369        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
370        SkPaint* paint) {
371    renderer->drawOval(left, top, right, bottom, paint);
372}
373
374static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
375        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
376        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
377    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
378}
379
380static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
381        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
382    SkRegion::Iterator it(*region);
383    while (!it.done()) {
384        const SkIRect& r = it.rect();
385        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
386        it.next();
387    }
388}
389
390static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
391        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
392    jfloat* storage = env->GetFloatArrayElements(points, NULL);
393    renderer->drawPoints(storage + offset, count, paint);
394    env->ReleaseFloatArrayElements(points, storage, 0);
395}
396
397static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
398        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
399    renderer->drawPath(path, paint);
400}
401
402static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
403        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
404    jfloat* storage = env->GetFloatArrayElements(points, NULL);
405    renderer->drawLines(storage + offset, count, paint);
406    env->ReleaseFloatArrayElements(points, storage, 0);
407}
408
409// ----------------------------------------------------------------------------
410// Shaders and color filters
411// ----------------------------------------------------------------------------
412
413static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
414        OpenGLRenderer* renderer, jint modifiers) {
415    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
416    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
417    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
418}
419
420static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
421        OpenGLRenderer* renderer, SkiaShader* shader) {
422    renderer->setupShader(shader);
423}
424
425static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
426        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
427    renderer->setupColorFilter(filter);
428}
429
430static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
431        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
432    renderer->setupShadow(radius, dx, dy, color);
433}
434
435// ----------------------------------------------------------------------------
436// Text
437// ----------------------------------------------------------------------------
438
439static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
440        jfloat x, jfloat y, int flags, SkPaint* paint) {
441#if RTL_USE_HARFBUZZ
442    sp<TextLayoutCacheValue> value;
443#if USE_TEXT_LAYOUT_CACHE
444    value = gTextLayoutCache.getValue(paint, text, 0, count, count, flags);
445    if (value == NULL) {
446        LOGE("Cannot get TextLayoutCache value");
447        return ;
448    }
449#else
450    value = new TextLayoutCacheValue();
451    value->computeValues(paint, text, 0, count, count, flags);
452#endif
453#if DEBUG_GLYPHS
454    logGlyphs(value);
455#endif
456    const jchar* glyphArray = value->getGlyphs();
457    int glyphCount = value->getGlyphsCount();
458    int bytesCount = glyphCount * sizeof(jchar);
459    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
460#else
461    const jchar *workText;
462    jchar* buffer = NULL;
463    int32_t workBytes;
464    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
465        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
466        free(buffer);
467    }
468#endif
469}
470
471static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
472        jint start, jint count, jint contextCount, jfloat x, jfloat y,
473        int flags, SkPaint* paint) {
474#if RTL_USE_HARFBUZZ
475    sp<TextLayoutCacheValue> value;
476#if USE_TEXT_LAYOUT_CACHE
477    value = gTextLayoutCache.getValue(paint, text, start, count, contextCount, flags);
478    if (value == NULL) {
479        LOGE("Cannot get TextLayoutCache value");
480        return ;
481    }
482#else
483    value = new TextLayoutCacheValue();
484    value->computeValues(paint, text, start, count, contextCount, flags);
485#endif
486#if DEBUG_GLYPHS
487    logGlyphs(value);
488#endif
489    const jchar* glyphArray = value->getGlyphs();
490    int glyphCount = value->getGlyphsCount();
491    int bytesCount = glyphCount * sizeof(jchar);
492    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
493#else
494    uint8_t rtl = flags & 0x1;
495    if (rtl) {
496        SkAutoSTMalloc<80, jchar> buffer(contextCount);
497        jchar* shaped = buffer.get();
498        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
499            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
500        } else {
501            LOGW("drawTextRun error");
502        }
503    } else {
504        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
505    }
506#endif
507}
508
509static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
510        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
511        jfloat x, jfloat y, jint flags, SkPaint* paint) {
512    jchar* textArray = env->GetCharArrayElements(text, NULL);
513    renderText(renderer, textArray + index, count, x, y, flags, paint);
514    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
515}
516
517static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
518        OpenGLRenderer* renderer, jstring text, jint start, jint end,
519        jfloat x, jfloat y, jint flags, SkPaint* paint) {
520    const jchar* textArray = env->GetStringChars(text, NULL);
521    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
522    env->ReleaseStringChars(text, textArray);
523}
524
525static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
526        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
527        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
528        SkPaint* paint) {
529    jchar* textArray = env->GetCharArrayElements(text, NULL);
530    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
531            count, contextCount, x, y, dirFlags, paint);
532    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
533 }
534
535static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
536        OpenGLRenderer* renderer, jstring text, jint start, jint end,
537        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
538        SkPaint* paint) {
539    const jchar* textArray = env->GetStringChars(text, NULL);
540    jint count = end - start;
541    jint contextCount = contextEnd - contextStart;
542    renderTextRun(renderer, textArray + contextStart, start - contextStart,
543            count, contextCount, x, y, dirFlags, paint);
544    env->ReleaseStringChars(text, textArray);
545}
546
547// ----------------------------------------------------------------------------
548// Display lists
549// ----------------------------------------------------------------------------
550
551static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
552        jobject clazz, DisplayListRenderer* renderer) {
553    return renderer->getDisplayList();
554}
555
556static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
557        jobject clazz, DisplayListRenderer* renderer) {
558    if (renderer == NULL) {
559        renderer = new DisplayListRenderer;
560    } else {
561        renderer->reset();
562    }
563    return renderer;
564}
565
566static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
567        jobject clazz, DisplayList* displayList) {
568    delete displayList;
569}
570
571static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
572        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
573        jint width, jint height, jobject dirty) {
574    android::uirenderer::Rect bounds;
575    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
576    if (redraw && dirty != NULL) {
577        env->CallVoidMethod(dirty, gRectClassInfo.set,
578                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
579    }
580    return redraw;
581}
582
583static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
584        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
585    renderer->outputDisplayList(displayList);
586}
587
588// ----------------------------------------------------------------------------
589// Layers
590// ----------------------------------------------------------------------------
591
592static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
593        OpenGLRenderer* renderer) {
594    renderer->interrupt();
595}
596
597static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
598        OpenGLRenderer* renderer) {
599    renderer->resume();
600}
601
602static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
603        jobject clazz, Layer* layer) {
604    if (layer) {
605        return new LayerRenderer(layer);
606    }
607    return NULL;
608}
609
610static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
611        jintArray layerInfo) {
612    Layer* layer = LayerRenderer::createTextureLayer();
613
614    if (layer) {
615        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
616        storage[0] = layer->texture;
617        env->ReleaseIntArrayElements(layerInfo, storage, 0);
618    }
619
620    return layer;
621}
622
623static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
624        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
625    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
626
627    if (layer) {
628        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
629        storage[0] = layer->width;
630        storage[1] = layer->height;
631        env->ReleaseIntArrayElements(layerInfo, storage, 0);
632    }
633
634    return layer;
635}
636
637static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
638        Layer* layer, jint width, jint height, jintArray layerInfo) {
639    LayerRenderer::resizeLayer(layer, width, height);
640
641    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
642    storage[0] = layer->width;
643    storage[1] = layer->height;
644    env->ReleaseIntArrayElements(layerInfo, storage, 0);
645}
646
647static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
648        Layer* layer, jint width, jint height, jobject surface) {
649    float transform[16];
650    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
651
652    while (surfaceTexture->getQueuedCount() > 0)
653        surfaceTexture->updateTexImage();
654    surfaceTexture->getTransformMatrix(transform);
655    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
656
657    LayerRenderer::updateTextureLayer(layer, width, height, renderTarget, transform);
658}
659
660static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
661    LayerRenderer::destroyLayer(layer);
662}
663
664static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
665        jobject clazz, Layer* layer) {
666    LayerRenderer::destroyLayerDeferred(layer);
667}
668
669static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
670        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
671    renderer->drawLayer(layer, x, y, paint);
672}
673
674static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
675        Layer* layer, SkBitmap* bitmap) {
676    return LayerRenderer::copyLayer(layer, bitmap);
677}
678
679#endif // USE_OPENGL_RENDERER
680
681// ----------------------------------------------------------------------------
682// Common
683// ----------------------------------------------------------------------------
684
685static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
686#ifdef USE_OPENGL_RENDERER
687    return JNI_TRUE;
688#else
689    return JNI_FALSE;
690#endif
691}
692
693// ----------------------------------------------------------------------------
694// Logging
695// ----------------------------------------------------------------------------
696
697static void
698android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor)
699{
700#ifdef USE_OPENGL_RENDERER
701    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
702    android::uirenderer::DisplayList::outputLogBuffer(fd);
703#endif // USE_OPENGL_RENDERER
704}
705
706// ----------------------------------------------------------------------------
707// JNI Glue
708// ----------------------------------------------------------------------------
709
710const char* const kClassPathName = "android/view/GLES20Canvas";
711
712static JNINativeMethod gMethods[] = {
713    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
714
715#ifdef USE_OPENGL_RENDERER
716    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
717    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
718
719    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
720    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
721    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
722    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
723    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
724    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
725
726    { "nCallDrawGLFunction", "(II)Z",
727            (void*) android_view_GLES20Canvas_callDrawGLFunction },
728
729    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
730    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
731    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
732    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
733
734    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
735    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
736
737    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
738    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
739    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
740
741    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
742    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
743    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
744    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
745
746    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
747    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
748    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
749    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
750
751    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
752    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
753    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
754
755    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
756
757    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
758
759    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
760    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
761    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
762    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
763    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
764    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
765    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
766    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
767
768    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
769    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
770
771    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
772    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
773    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
774    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
775
776    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
777    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
778            (void*) android_view_GLES20Canvas_drawText },
779
780    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
781    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
782            (void*) android_view_GLES20Canvas_drawTextRun },
783
784    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
785            (void*) android_view_GLES20Canvas_getClipBounds },
786
787    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
788    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
789    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
790    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
791                                               (void*) android_view_GLES20Canvas_drawDisplayList },
792    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
793    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
794    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
795
796    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
797    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
798    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
799    { "nCreateTextureLayer",     "([I)I",      (void*) android_view_GLES20Canvas_createTextureLayer },
800    { "nUpdateTextureLayer",     "(IIILandroid/graphics/SurfaceTexture;)V",
801                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
802    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
803    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
804    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
805    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
806
807#endif
808};
809
810static JNINativeMethod gActivityThreadMethods[] = {
811    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
812                                               (void*) android_app_ActivityThread_dumpGraphics }
813};
814
815
816#ifdef USE_OPENGL_RENDERER
817    #define FIND_CLASS(var, className) \
818            var = env->FindClass(className); \
819            LOG_FATAL_IF(! var, "Unable to find class " className);
820
821    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
822            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
823            LOG_FATAL_IF(! var, "Unable to find method " methodName);
824#else
825    #define FIND_CLASS(var, className)
826    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
827#endif
828
829int register_android_view_GLES20Canvas(JNIEnv* env) {
830    jclass clazz;
831    FIND_CLASS(clazz, "android/graphics/Rect");
832    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
833
834    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
835}
836
837const char* const kActivityThreadPathName = "android/app/ActivityThread";
838
839int register_android_app_ActivityThread(JNIEnv* env)
840{
841    return AndroidRuntime::registerNativeMethods(
842            env, kActivityThreadPathName,
843            gActivityThreadMethods, NELEM(gActivityThreadMethods));
844}
845
846};
847