android_view_GLES20Canvas.cpp revision f40aa3834d92bfb516e0f865375103d81e3de71d 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OpenGLRenderer"
18
19#include <EGL/egl.h>
20
21#include "jni.h"
22#include "GraphicsJNI.h"
23#include <nativehelper/JNIHelp.h>
24#include <android_runtime/AndroidRuntime.h>
25#include <android_runtime/android_graphics_SurfaceTexture.h>
26#include <utils/ResourceTypes.h>
27
28#include <gui/SurfaceTexture.h>
29
30#include <SkBitmap.h>
31#include <SkCanvas.h>
32#include <SkMatrix.h>
33#include <SkPaint.h>
34#include <SkRegion.h>
35#include <SkScalerContext.h>
36#include <SkTemplates.h>
37#include <SkXfermode.h>
38
39#include <DisplayListRenderer.h>
40#include <LayerRenderer.h>
41#include <OpenGLRenderer.h>
42#include <SkiaShader.h>
43#include <SkiaColorFilter.h>
44#include <Rect.h>
45
46#include <TextLayout.h>
47
48namespace android {
49
50using namespace uirenderer;
51
52/**
53 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
54 *       devices. This means all the logic must be compiled only when the
55 *       preprocessor variable USE_OPENGL_RENDERER is defined.
56 */
57#ifdef USE_OPENGL_RENDERER
58
59///////////////////////////////////////////////////////////////////////////////
60// Defines
61///////////////////////////////////////////////////////////////////////////////
62
63// Debug
64#define DEBUG_RENDERER 0
65
66// Debug
67#if DEBUG_RENDERER
68    #define RENDERER_LOGD(...) LOGD(__VA_ARGS__)
69#else
70    #define RENDERER_LOGD(...)
71#endif
72
73#define MODIFIER_SHADOW 1
74#define MODIFIER_SHADER 2
75#define MODIFIER_COLOR_FILTER 4
76
77// ----------------------------------------------------------------------------
78
79static struct {
80    jmethodID set;
81} gRectClassInfo;
82
83// ----------------------------------------------------------------------------
84// Misc
85// ----------------------------------------------------------------------------
86
87static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
88    EGLDisplay display = eglGetCurrentDisplay();
89    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
90
91    eglGetError();
92    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
93
94    EGLint error = eglGetError();
95    if (error != EGL_SUCCESS) {
96        RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
97    }
98
99    return error == EGL_SUCCESS;
100}
101
102static jboolean android_view_GLES20Canvas_isBackBufferPreserved(JNIEnv* env, jobject clazz) {
103    EGLDisplay display = eglGetCurrentDisplay();
104    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
105    EGLint value;
106
107    eglGetError();
108    eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value);
109
110    EGLint error = eglGetError();
111    if (error != EGL_SUCCESS) {
112        RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error);
113    }
114
115    return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED;
116}
117
118static void android_view_GLES20Canvas_disableVsync(JNIEnv* env, jobject clazz) {
119    EGLDisplay display = eglGetCurrentDisplay();
120
121    eglGetError();
122    eglSwapInterval(display, 0);
123
124    EGLint error = eglGetError();
125    if (error != EGL_SUCCESS) {
126        RENDERER_LOGD("Could not disable v-sync (%x)", error);
127    }
128}
129
130static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
131        Caches::FlushMode mode) {
132    if (Caches::hasInstance()) {
133        Caches::getInstance().flush(mode);
134    }
135}
136
137// ----------------------------------------------------------------------------
138// Constructors
139// ----------------------------------------------------------------------------
140
141static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
142    RENDERER_LOGD("Create OpenGLRenderer");
143    return new OpenGLRenderer;
144}
145
146static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
147        OpenGLRenderer* renderer) {
148    RENDERER_LOGD("Destroy OpenGLRenderer");
149    delete renderer;
150}
151
152// ----------------------------------------------------------------------------
153// Setup
154// ----------------------------------------------------------------------------
155
156static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
157        OpenGLRenderer* renderer, jint width, jint height) {
158    renderer->setViewport(width, height);
159}
160
161static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
162        OpenGLRenderer* renderer, jboolean opaque) {
163    renderer->prepare(opaque);
164}
165
166static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
167        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
168        jboolean opaque) {
169    renderer->prepareDirty(left, top, right, bottom, opaque);
170}
171
172static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
173        OpenGLRenderer* renderer) {
174    renderer->finish();
175}
176
177static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
178        OpenGLRenderer* renderer, Functor *functor) {
179    android::uirenderer::Rect dirty;
180    return renderer->callDrawGLFunction(functor, dirty);
181}
182
183static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
184    return Caches::getInstance().maxTextureSize;
185}
186
187static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
188    return Caches::getInstance().maxTextureSize;
189}
190
191// ----------------------------------------------------------------------------
192// State
193// ----------------------------------------------------------------------------
194
195static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
196        jint flags) {
197    return renderer->save(flags);
198}
199
200static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
201        OpenGLRenderer* renderer) {
202    return renderer->getSaveCount();
203}
204
205static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
206        OpenGLRenderer* renderer) {
207    renderer->restore();
208}
209
210static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
211        OpenGLRenderer* renderer, jint saveCount) {
212    renderer->restoreToCount(saveCount);
213}
214
215// ----------------------------------------------------------------------------
216// Layers
217// ----------------------------------------------------------------------------
218
219static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
220        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
221        SkPaint* paint, jint saveFlags) {
222    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
223}
224
225static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
226        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
227        jint alpha, jint saveFlags) {
228    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
229}
230
231// ----------------------------------------------------------------------------
232// Clipping
233// ----------------------------------------------------------------------------
234
235static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
236        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
237        SkCanvas::EdgeType edge) {
238    return renderer->quickReject(left, top, right, bottom);
239}
240
241static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
242        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
243        SkRegion::Op op) {
244    return renderer->clipRect(left, top, right, bottom, op);
245}
246
247static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
248        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
249        SkRegion::Op op) {
250    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
251}
252
253static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
254        OpenGLRenderer* renderer, jobject rect) {
255    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
256
257    env->CallVoidMethod(rect, gRectClassInfo.set,
258            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
259
260    return !bounds.isEmpty();
261}
262
263// ----------------------------------------------------------------------------
264// Transforms
265// ----------------------------------------------------------------------------
266
267static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
268        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
269    renderer->translate(dx, dy);
270}
271
272static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
273        OpenGLRenderer* renderer, jfloat degrees) {
274    renderer->rotate(degrees);
275}
276
277static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
278        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
279    renderer->scale(sx, sy);
280}
281
282static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
283        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
284    renderer->skew(sx, sy);
285}
286
287static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
288        OpenGLRenderer* renderer, SkMatrix* matrix) {
289    renderer->setMatrix(matrix);
290}
291
292static const float* android_view_GLES20Canvas_getNativeMatrix(JNIEnv* env,
293        jobject clazz, OpenGLRenderer* renderer) {
294    return renderer->getMatrix();
295}
296
297static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
298        OpenGLRenderer* renderer, SkMatrix* matrix) {
299    renderer->getMatrix(matrix);
300}
301
302static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
303        OpenGLRenderer* renderer, SkMatrix* matrix) {
304    renderer->concatMatrix(matrix);
305}
306
307// ----------------------------------------------------------------------------
308// Drawing
309// ----------------------------------------------------------------------------
310
311static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
312        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
313        float top, SkPaint* paint) {
314    // This object allows the renderer to allocate a global JNI ref to the buffer object.
315    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
316
317    renderer->drawBitmap(bitmap, left, top, paint);
318}
319
320static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
321        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
322        float srcLeft, float srcTop, float srcRight, float srcBottom,
323        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
324    // This object allows the renderer to allocate a global JNI ref to the buffer object.
325    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
326
327    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
328            dstLeft, dstTop, dstRight, dstBottom, paint);
329}
330
331static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
332        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
333        SkPaint* paint) {
334    // This object allows the renderer to allocate a global JNI ref to the buffer object.
335    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
336
337    renderer->drawBitmap(bitmap, matrix, paint);
338}
339
340static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
341        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
342        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
343        jintArray colors, jint colorOffset, SkPaint* paint) {
344    // This object allows the renderer to allocate a global JNI ref to the buffer object.
345    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
346
347    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
348    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
349
350    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
351
352    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
353    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
354}
355
356static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
357        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
358        float left, float top, float right, float bottom, SkPaint* paint) {
359    // This object allows the renderer to allocate a global JNI ref to the buffer object.
360    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
361
362    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
363    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
364    Res_png_9patch::deserialize(patch);
365
366    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
367            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
368            left, top, right, bottom, paint);
369
370    env->ReleaseByteArrayElements(chunks, storage, 0);
371}
372
373static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
374        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
375    renderer->drawColor(color, mode);
376}
377
378static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
379        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
380        SkPaint* paint) {
381    renderer->drawRect(left, top, right, bottom, paint);
382}
383
384static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
385        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
386        jfloat rx, jfloat ry, SkPaint* paint) {
387    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
388}
389
390static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
391        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
392    renderer->drawCircle(x, y, radius, paint);
393}
394
395static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
396        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
397        SkPaint* paint) {
398    renderer->drawOval(left, top, right, bottom, paint);
399}
400
401static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
402        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
403        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
404    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
405}
406
407static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
408        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
409    SkRegion::Iterator it(*region);
410    while (!it.done()) {
411        const SkIRect& r = it.rect();
412        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
413        it.next();
414    }
415}
416
417static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
418        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
419    jfloat* storage = env->GetFloatArrayElements(points, NULL);
420    renderer->drawPoints(storage + offset, count, paint);
421    env->ReleaseFloatArrayElements(points, storage, 0);
422}
423
424static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
425        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
426    renderer->drawPath(path, paint);
427}
428
429static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
430        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
431    jfloat* storage = env->GetFloatArrayElements(points, NULL);
432    renderer->drawLines(storage + offset, count, paint);
433    env->ReleaseFloatArrayElements(points, storage, 0);
434}
435
436// ----------------------------------------------------------------------------
437// Shaders and color filters
438// ----------------------------------------------------------------------------
439
440static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
441        OpenGLRenderer* renderer, jint modifiers) {
442    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
443    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
444    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
445}
446
447static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
448        OpenGLRenderer* renderer, SkiaShader* shader) {
449    renderer->setupShader(shader);
450}
451
452static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
453        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
454    renderer->setupColorFilter(filter);
455}
456
457static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
458        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
459    renderer->setupShadow(radius, dx, dy, color);
460}
461
462// ----------------------------------------------------------------------------
463// Text
464// ----------------------------------------------------------------------------
465
466static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
467        jfloat x, jfloat y, int flags, SkPaint* paint) {
468#if RTL_USE_HARFBUZZ
469    sp<TextLayoutCacheValue> value;
470#if USE_TEXT_LAYOUT_CACHE
471    value = gTextLayoutCache.getValue(paint, text, 0, count, count, flags);
472    if (value == NULL) {
473        LOGE("Cannot get TextLayoutCache value");
474        return ;
475    }
476#else
477    value = new TextLayoutCacheValue();
478    value->computeValues(paint, text, 0, count, count, flags);
479#endif
480#if DEBUG_GLYPHS
481    logGlyphs(value);
482#endif
483    const jchar* glyphArray = value->getGlyphs();
484    int glyphCount = value->getGlyphsCount();
485    int bytesCount = glyphCount * sizeof(jchar);
486    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
487#else
488    const jchar *workText;
489    jchar* buffer = NULL;
490    int32_t workBytes;
491    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
492        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
493        free(buffer);
494    }
495#endif
496}
497
498static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
499        jint start, jint count, jint contextCount, jfloat x, jfloat y,
500        int flags, SkPaint* paint) {
501#if RTL_USE_HARFBUZZ
502    sp<TextLayoutCacheValue> value;
503#if USE_TEXT_LAYOUT_CACHE
504    value = gTextLayoutCache.getValue(paint, text, start, count, contextCount, flags);
505    if (value == NULL) {
506        LOGE("Cannot get TextLayoutCache value");
507        return ;
508    }
509#else
510    value = new TextLayoutCacheValue();
511    value->computeValues(paint, text, start, count, contextCount, flags);
512#endif
513#if DEBUG_GLYPHS
514    logGlyphs(value);
515#endif
516    const jchar* glyphArray = value->getGlyphs();
517    int glyphCount = value->getGlyphsCount();
518    int bytesCount = glyphCount * sizeof(jchar);
519    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
520#else
521    uint8_t rtl = flags & 0x1;
522    if (rtl) {
523        SkAutoSTMalloc<80, jchar> buffer(contextCount);
524        jchar* shaped = buffer.get();
525        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
526            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
527        } else {
528            LOGW("drawTextRun error");
529        }
530    } else {
531        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
532    }
533#endif
534}
535
536static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
537        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
538        jfloat x, jfloat y, jint flags, SkPaint* paint) {
539    jchar* textArray = env->GetCharArrayElements(text, NULL);
540    renderText(renderer, textArray + index, count, x, y, flags, paint);
541    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
542}
543
544static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
545        OpenGLRenderer* renderer, jstring text, jint start, jint end,
546        jfloat x, jfloat y, jint flags, SkPaint* paint) {
547    const jchar* textArray = env->GetStringChars(text, NULL);
548    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
549    env->ReleaseStringChars(text, textArray);
550}
551
552static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
553        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
554        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
555        SkPaint* paint) {
556    jchar* textArray = env->GetCharArrayElements(text, NULL);
557    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
558            count, contextCount, x, y, dirFlags, paint);
559    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
560 }
561
562static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
563        OpenGLRenderer* renderer, jstring text, jint start, jint end,
564        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
565        SkPaint* paint) {
566    const jchar* textArray = env->GetStringChars(text, NULL);
567    jint count = end - start;
568    jint contextCount = contextEnd - contextStart;
569    renderTextRun(renderer, textArray + contextStart, start - contextStart,
570            count, contextCount, x, y, dirFlags, paint);
571    env->ReleaseStringChars(text, textArray);
572}
573
574// ----------------------------------------------------------------------------
575// Display lists
576// ----------------------------------------------------------------------------
577
578static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
579        jobject clazz, DisplayListRenderer* renderer) {
580    return renderer->getDisplayList();
581}
582
583static OpenGLRenderer* android_view_GLES20Canvas_getDisplayListRenderer(JNIEnv* env,
584        jobject clazz, DisplayListRenderer* renderer) {
585    if (renderer == NULL) {
586        renderer = new DisplayListRenderer;
587    } else {
588        renderer->reset();
589    }
590    return renderer;
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_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
687    LayerRenderer::destroyLayer(layer);
688}
689
690static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
691        jobject clazz, Layer* layer) {
692    LayerRenderer::destroyLayerDeferred(layer);
693}
694
695static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
696        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
697    renderer->drawLayer(layer, x, y, paint);
698}
699
700static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
701        Layer* layer, SkBitmap* bitmap) {
702    return LayerRenderer::copyLayer(layer, bitmap);
703}
704
705#endif // USE_OPENGL_RENDERER
706
707// ----------------------------------------------------------------------------
708// Common
709// ----------------------------------------------------------------------------
710
711static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
712#ifdef USE_OPENGL_RENDERER
713    return JNI_TRUE;
714#else
715    return JNI_FALSE;
716#endif
717}
718
719// ----------------------------------------------------------------------------
720// Logging
721// ----------------------------------------------------------------------------
722
723static void
724android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor)
725{
726#ifdef USE_OPENGL_RENDERER
727    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
728    android::uirenderer::DisplayList::outputLogBuffer(fd);
729#endif // USE_OPENGL_RENDERER
730}
731
732// ----------------------------------------------------------------------------
733// JNI Glue
734// ----------------------------------------------------------------------------
735
736const char* const kClassPathName = "android/view/GLES20Canvas";
737
738static JNINativeMethod gMethods[] = {
739    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
740
741#ifdef USE_OPENGL_RENDERER
742    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
743    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
744    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
745    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
746
747    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
748    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
749    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
750    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
751    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
752    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
753
754    { "nCallDrawGLFunction", "(II)Z",
755            (void*) android_view_GLES20Canvas_callDrawGLFunction },
756
757    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
758    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
759    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
760    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
761
762    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
763    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
764
765    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
766    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
767    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
768
769    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
770    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
771    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
772    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
773
774    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
775    { "nGetMatrix",         "(I)I",            (void*) android_view_GLES20Canvas_getNativeMatrix },
776    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
777    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
778
779    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
780    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
781    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
782
783    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
784
785    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
786
787    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
788    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
789    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
790    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
791    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
792    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
793    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
794    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
795
796    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
797    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
798
799    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
800    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
801    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
802    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
803
804    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
805    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
806            (void*) android_view_GLES20Canvas_drawText },
807
808    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
809    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
810            (void*) android_view_GLES20Canvas_drawTextRun },
811
812    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
813            (void*) android_view_GLES20Canvas_getClipBounds },
814
815    { "nGetDisplayList",         "(I)I",       (void*) android_view_GLES20Canvas_getDisplayList },
816    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
817    { "nGetDisplayListRenderer", "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListRenderer },
818    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
819                                               (void*) android_view_GLES20Canvas_drawDisplayList },
820    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
821    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
822    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
823
824    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
825    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
826    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
827    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
828    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
829                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
830    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
831    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
832    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
833    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
834
835    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
836    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
837
838#endif
839};
840
841static JNINativeMethod gActivityThreadMethods[] = {
842    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
843                                               (void*) android_app_ActivityThread_dumpGraphics }
844};
845
846
847#ifdef USE_OPENGL_RENDERER
848    #define FIND_CLASS(var, className) \
849            var = env->FindClass(className); \
850            LOG_FATAL_IF(! var, "Unable to find class " className);
851
852    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
853            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
854            LOG_FATAL_IF(! var, "Unable to find method " methodName);
855#else
856    #define FIND_CLASS(var, className)
857    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
858#endif
859
860int register_android_view_GLES20Canvas(JNIEnv* env) {
861    jclass clazz;
862    FIND_CLASS(clazz, "android/graphics/Rect");
863    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
864
865    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
866}
867
868const char* const kActivityThreadPathName = "android/app/ActivityThread";
869
870int register_android_app_ActivityThread(JNIEnv* env) {
871    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
872            gActivityThreadMethods, NELEM(gActivityThreadMethods));
873}
874
875};
876