android_view_GLES20Canvas.cpp revision da96f8ac2c1c35a54f3f36e6d776cb386a251d03 
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
137static void android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
138    if (Caches::hasInstance()) {
139        Caches::getInstance().init();
140    }
141}
142
143static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
144    if (Caches::hasInstance()) {
145        Caches::getInstance().terminate();
146    }
147}
148
149// ----------------------------------------------------------------------------
150// Constructors
151// ----------------------------------------------------------------------------
152
153static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
154    RENDERER_LOGD("Create OpenGLRenderer");
155    return new OpenGLRenderer;
156}
157
158static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
159        OpenGLRenderer* renderer) {
160    RENDERER_LOGD("Destroy OpenGLRenderer");
161    delete renderer;
162}
163
164// ----------------------------------------------------------------------------
165// Setup
166// ----------------------------------------------------------------------------
167
168static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
169        OpenGLRenderer* renderer, jint width, jint height) {
170    renderer->setViewport(width, height);
171}
172
173static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
174        OpenGLRenderer* renderer, jboolean opaque) {
175    renderer->prepare(opaque);
176}
177
178static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
179        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
180        jboolean opaque) {
181    renderer->prepareDirty(left, top, right, bottom, opaque);
182}
183
184static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
185        OpenGLRenderer* renderer) {
186    renderer->finish();
187}
188
189static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
190        OpenGLRenderer* renderer, Functor *functor) {
191    android::uirenderer::Rect dirty;
192    return renderer->callDrawGLFunction(functor, dirty);
193}
194
195static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
196    return Caches::getInstance().maxTextureSize;
197}
198
199static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
200    return Caches::getInstance().maxTextureSize;
201}
202
203// ----------------------------------------------------------------------------
204// State
205// ----------------------------------------------------------------------------
206
207static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
208        jint flags) {
209    return renderer->save(flags);
210}
211
212static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
213        OpenGLRenderer* renderer) {
214    return renderer->getSaveCount();
215}
216
217static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
218        OpenGLRenderer* renderer) {
219    renderer->restore();
220}
221
222static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
223        OpenGLRenderer* renderer, jint saveCount) {
224    renderer->restoreToCount(saveCount);
225}
226
227// ----------------------------------------------------------------------------
228// Layers
229// ----------------------------------------------------------------------------
230
231static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
232        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
233        SkPaint* paint, jint saveFlags) {
234    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
235}
236
237static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
238        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
239    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
240    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
241            paint, saveFlags);
242}
243
244static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
245        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
246        jint alpha, jint saveFlags) {
247    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
248}
249
250static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
251        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
252    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
253    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
254            alpha, saveFlags);
255}
256
257// ----------------------------------------------------------------------------
258// Clipping
259// ----------------------------------------------------------------------------
260
261static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
262        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
263        SkCanvas::EdgeType edge) {
264    return renderer->quickReject(left, top, right, bottom);
265}
266
267static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
268        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
269        SkRegion::Op op) {
270    return renderer->clipRect(left, top, right, bottom, op);
271}
272
273static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
274        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
275        SkRegion::Op op) {
276    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
277}
278
279static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
280        OpenGLRenderer* renderer, jobject rect) {
281    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
282
283    env->CallVoidMethod(rect, gRectClassInfo.set,
284            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
285
286    return !bounds.isEmpty();
287}
288
289// ----------------------------------------------------------------------------
290// Transforms
291// ----------------------------------------------------------------------------
292
293static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
294        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
295    renderer->translate(dx, dy);
296}
297
298static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
299        OpenGLRenderer* renderer, jfloat degrees) {
300    renderer->rotate(degrees);
301}
302
303static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
304        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
305    renderer->scale(sx, sy);
306}
307
308static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
309        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
310    renderer->skew(sx, sy);
311}
312
313static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
314        OpenGLRenderer* renderer, SkMatrix* matrix) {
315    renderer->setMatrix(matrix);
316}
317
318static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
319        OpenGLRenderer* renderer, SkMatrix* matrix) {
320    renderer->getMatrix(matrix);
321}
322
323static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
324        OpenGLRenderer* renderer, SkMatrix* matrix) {
325    renderer->concatMatrix(matrix);
326}
327
328// ----------------------------------------------------------------------------
329// Drawing
330// ----------------------------------------------------------------------------
331
332static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
333        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
334        float top, SkPaint* paint) {
335    // This object allows the renderer to allocate a global JNI ref to the buffer object.
336    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
337
338    renderer->drawBitmap(bitmap, left, top, paint);
339}
340
341static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
342        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
343        float srcLeft, float srcTop, float srcRight, float srcBottom,
344        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
345    // This object allows the renderer to allocate a global JNI ref to the buffer object.
346    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
347
348    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
349            dstLeft, dstTop, dstRight, dstBottom, paint);
350}
351
352static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
353        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
354        SkPaint* paint) {
355    // This object allows the renderer to allocate a global JNI ref to the buffer object.
356    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
357
358    renderer->drawBitmap(bitmap, matrix, paint);
359}
360
361static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
362        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
363        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
364        jintArray colors, jint colorOffset, SkPaint* paint) {
365    // This object allows the renderer to allocate a global JNI ref to the buffer object.
366    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
367
368    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
369    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
370
371    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
372
373    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
374    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
375}
376
377static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
378        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
379        float left, float top, float right, float bottom, SkPaint* paint) {
380    // This object allows the renderer to allocate a global JNI ref to the buffer object.
381    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
382
383    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
384    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
385    Res_png_9patch::deserialize(patch);
386
387    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
388            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
389            left, top, right, bottom, paint);
390
391    env->ReleaseByteArrayElements(chunks, storage, 0);
392}
393
394static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
395        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
396    renderer->drawColor(color, mode);
397}
398
399static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
400        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
401        SkPaint* paint) {
402    renderer->drawRect(left, top, right, bottom, paint);
403}
404
405static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
406        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
407        jfloat rx, jfloat ry, SkPaint* paint) {
408    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
409}
410
411static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
412        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
413    renderer->drawCircle(x, y, radius, paint);
414}
415
416static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
417        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
418        SkPaint* paint) {
419    renderer->drawOval(left, top, right, bottom, paint);
420}
421
422static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
423        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
424        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
425    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
426}
427
428static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
429        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
430    SkRegion::Iterator it(*region);
431    while (!it.done()) {
432        const SkIRect& r = it.rect();
433        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
434        it.next();
435    }
436}
437
438static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
439        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
440    jfloat* storage = env->GetFloatArrayElements(points, NULL);
441    renderer->drawPoints(storage + offset, count, paint);
442    env->ReleaseFloatArrayElements(points, storage, 0);
443}
444
445static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
446        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
447    renderer->drawPath(path, paint);
448}
449
450static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
451        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
452    jfloat* storage = env->GetFloatArrayElements(points, NULL);
453    renderer->drawLines(storage + offset, count, paint);
454    env->ReleaseFloatArrayElements(points, storage, 0);
455}
456
457// ----------------------------------------------------------------------------
458// Shaders and color filters
459// ----------------------------------------------------------------------------
460
461static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
462        OpenGLRenderer* renderer, jint modifiers) {
463    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
464    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
465    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
466}
467
468static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
469        OpenGLRenderer* renderer, SkiaShader* shader) {
470    renderer->setupShader(shader);
471}
472
473static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
474        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
475    renderer->setupColorFilter(filter);
476}
477
478static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
479        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
480    renderer->setupShadow(radius, dx, dy, color);
481}
482
483// ----------------------------------------------------------------------------
484// Text
485// ----------------------------------------------------------------------------
486
487static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
488        jfloat x, jfloat y, int flags, SkPaint* paint) {
489#if RTL_USE_HARFBUZZ
490    sp<TextLayoutCacheValue> value;
491#if USE_TEXT_LAYOUT_CACHE
492    value = TextLayoutCache::getInstance().getValue(paint, text, 0, count, count, flags);
493    if (value == NULL) {
494        LOGE("Cannot get TextLayoutCache value");
495        return ;
496    }
497#else
498    value = new TextLayoutCacheValue();
499    value->computeValues(paint, text, 0, count, count, flags);
500#endif
501    const jchar* glyphs = value->getGlyphs();
502    size_t glyphsCount = value->getGlyphsCount();
503    int bytesCount = glyphsCount * sizeof(jchar);
504    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
505#else
506    const jchar *workText;
507    jchar* buffer = NULL;
508    int32_t workBytes;
509    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
510        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
511        free(buffer);
512    }
513#endif
514}
515
516static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
517        jint start, jint count, jint contextCount, jfloat x, jfloat y,
518        int flags, SkPaint* paint) {
519#if RTL_USE_HARFBUZZ
520    sp<TextLayoutCacheValue> value;
521#if USE_TEXT_LAYOUT_CACHE
522    value = TextLayoutCache::getInstance().getValue(paint, text, start, count, contextCount, flags);
523    if (value == NULL) {
524        LOGE("Cannot get TextLayoutCache value");
525        return ;
526    }
527#else
528    value = new TextLayoutCacheValue();
529    value->computeValues(paint, text, start, count, contextCount, flags);
530#endif
531    const jchar* glyphs = value->getGlyphs();
532    size_t glyphsCount = value->getGlyphsCount();
533    int bytesCount = glyphsCount * sizeof(jchar);
534    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
535#else
536    uint8_t rtl = flags & 0x1;
537    if (rtl) {
538        SkAutoSTMalloc<80, jchar> buffer(contextCount);
539        jchar* shaped = buffer.get();
540        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
541            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
542        } else {
543            LOGW("drawTextRun error");
544        }
545    } else {
546        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
547    }
548#endif
549}
550
551static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
552        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
553        jfloat x, jfloat y, jint flags, SkPaint* paint) {
554    jchar* textArray = env->GetCharArrayElements(text, NULL);
555    renderText(renderer, textArray + index, count, x, y, flags, paint);
556    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
557}
558
559static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
560        OpenGLRenderer* renderer, jstring text, jint start, jint end,
561        jfloat x, jfloat y, jint flags, SkPaint* paint) {
562    const jchar* textArray = env->GetStringChars(text, NULL);
563    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
564    env->ReleaseStringChars(text, textArray);
565}
566
567static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
568        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
569        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
570        SkPaint* paint) {
571    jchar* textArray = env->GetCharArrayElements(text, NULL);
572    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
573            count, contextCount, x, y, dirFlags, paint);
574    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
575 }
576
577static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
578        OpenGLRenderer* renderer, jstring text, jint start, jint end,
579        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
580        SkPaint* paint) {
581    const jchar* textArray = env->GetStringChars(text, NULL);
582    jint count = end - start;
583    jint contextCount = contextEnd - contextStart;
584    renderTextRun(renderer, textArray + contextStart, start - contextStart,
585            count, contextCount, x, y, dirFlags, paint);
586    env->ReleaseStringChars(text, textArray);
587}
588
589// ----------------------------------------------------------------------------
590// Display lists
591// ----------------------------------------------------------------------------
592
593static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
594        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
595    return renderer->getDisplayList(displayList);
596}
597
598static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
599        jobject clazz, DisplayList* displayList) {
600    return displayList->getSize();
601}
602
603static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
604        jobject clazz) {
605    return new DisplayListRenderer;
606}
607
608static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
609        jobject clazz, DisplayListRenderer* renderer) {
610    renderer->reset();
611}
612
613static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
614        jobject clazz, DisplayList* displayList) {
615    delete displayList;
616}
617
618static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
619        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
620        jint width, jint height, jobject dirty) {
621    android::uirenderer::Rect bounds;
622    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
623    if (redraw && dirty != NULL) {
624        env->CallVoidMethod(dirty, gRectClassInfo.set,
625                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
626    }
627    return redraw;
628}
629
630static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
631        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
632    renderer->outputDisplayList(displayList);
633}
634
635// ----------------------------------------------------------------------------
636// Layers
637// ----------------------------------------------------------------------------
638
639static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
640        OpenGLRenderer* renderer) {
641    renderer->interrupt();
642}
643
644static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
645        OpenGLRenderer* renderer) {
646    renderer->resume();
647}
648
649static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
650        jobject clazz, Layer* layer) {
651    if (layer) {
652        return new LayerRenderer(layer);
653    }
654    return NULL;
655}
656
657static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
658        jboolean isOpaque, jintArray layerInfo) {
659    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
660
661    if (layer) {
662        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
663        storage[0] = layer->getTexture();
664        env->ReleaseIntArrayElements(layerInfo, storage, 0);
665    }
666
667    return layer;
668}
669
670static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
671        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
672    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
673
674    if (layer) {
675        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
676        storage[0] = layer->getWidth();
677        storage[1] = layer->getHeight();
678        env->ReleaseIntArrayElements(layerInfo, storage, 0);
679    }
680
681    return layer;
682}
683
684static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
685        Layer* layer, jint width, jint height, jintArray layerInfo) {
686    LayerRenderer::resizeLayer(layer, width, height);
687
688    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
689    storage[0] = layer->getWidth();
690    storage[1] = layer->getHeight();
691    env->ReleaseIntArrayElements(layerInfo, storage, 0);
692}
693
694static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
695        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
696    float transform[16];
697    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
698
699    surfaceTexture->updateTexImage();
700    surfaceTexture->getTransformMatrix(transform);
701    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
702
703    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
704}
705
706static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
707        Layer* layer, SkMatrix* matrix) {
708
709    layer->getTransform().load(*matrix);
710}
711
712static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
713    LayerRenderer::destroyLayer(layer);
714}
715
716static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
717        jobject clazz, Layer* layer) {
718    LayerRenderer::destroyLayerDeferred(layer);
719}
720
721static void android_view_GLES20Canvas_flushLayer(JNIEnv* env, jobject clazz, Layer* layer) {
722    LayerRenderer::flushLayer(layer);
723}
724
725static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
726        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
727    renderer->drawLayer(layer, x, y, paint);
728}
729
730static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
731        Layer* layer, SkBitmap* bitmap) {
732    return LayerRenderer::copyLayer(layer, bitmap);
733}
734
735#endif // USE_OPENGL_RENDERER
736
737// ----------------------------------------------------------------------------
738// Common
739// ----------------------------------------------------------------------------
740
741static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
742#ifdef USE_OPENGL_RENDERER
743    return JNI_TRUE;
744#else
745    return JNI_FALSE;
746#endif
747}
748
749// ----------------------------------------------------------------------------
750// Logging
751// ----------------------------------------------------------------------------
752
753static void
754android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
755#ifdef USE_OPENGL_RENDERER
756    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
757    android::uirenderer::DisplayList::outputLogBuffer(fd);
758#endif // USE_OPENGL_RENDERER
759}
760
761// ----------------------------------------------------------------------------
762// JNI Glue
763// ----------------------------------------------------------------------------
764
765const char* const kClassPathName = "android/view/GLES20Canvas";
766
767static JNINativeMethod gMethods[] = {
768    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
769
770#ifdef USE_OPENGL_RENDERER
771    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
772    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
773    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
774    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
775    { "nInitCaches",            "()V",         (void*) android_view_GLES20Canvas_initCaches },
776    { "nTerminateCaches",       "()V",         (void*) android_view_GLES20Canvas_terminateCaches },
777
778    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
779    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
780    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
781    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
782    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
783    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
784
785    { "nCallDrawGLFunction", "(II)Z",
786            (void*) android_view_GLES20Canvas_callDrawGLFunction },
787
788    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
789    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
790    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
791    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
792
793    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
794    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
795    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
796    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
797
798    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
799    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
800    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
801
802    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
803    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
804    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
805    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
806
807    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
808    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
809    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
810
811    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
812    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
813    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
814
815    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
816
817    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
818
819    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
820    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
821    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
822    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
823    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
824    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
825    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
826    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
827
828    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
829    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
830
831    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
832    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
833    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
834    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
835
836    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
837    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
838            (void*) android_view_GLES20Canvas_drawText },
839
840    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
841    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
842            (void*) android_view_GLES20Canvas_drawTextRun },
843
844    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
845            (void*) android_view_GLES20Canvas_getClipBounds },
846
847    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
848    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
849    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
850    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
851    { "nResetDisplayListRenderer", "(I)V",     (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
852    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
853                                               (void*) android_view_GLES20Canvas_drawDisplayList },
854    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
855    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
856    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
857
858    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
859    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
860    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
861    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
862    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
863                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
864    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
865    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
866    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
867    { "nFlushLayer",             "(I)V",       (void*) android_view_GLES20Canvas_flushLayer },
868    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
869    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
870
871    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
872    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
873
874#endif
875};
876
877static JNINativeMethod gActivityThreadMethods[] = {
878    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
879                                               (void*) android_app_ActivityThread_dumpGraphics }
880};
881
882
883#ifdef USE_OPENGL_RENDERER
884    #define FIND_CLASS(var, className) \
885            var = env->FindClass(className); \
886            LOG_FATAL_IF(! var, "Unable to find class " className);
887
888    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
889            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
890            LOG_FATAL_IF(! var, "Unable to find method " methodName);
891#else
892    #define FIND_CLASS(var, className)
893    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
894#endif
895
896int register_android_view_GLES20Canvas(JNIEnv* env) {
897    jclass clazz;
898    FIND_CLASS(clazz, "android/graphics/Rect");
899    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
900
901    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
902}
903
904const char* const kActivityThreadPathName = "android/app/ActivityThread";
905
906int register_android_app_ActivityThread(JNIEnv* env) {
907    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
908            gActivityThreadMethods, NELEM(gActivityThreadMethods));
909}
910
911};
912