android_view_GLES20Canvas.cpp revision 244ada1d35419b7be9de0fc833bb03955b725ffa 
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
25#include <android_runtime/AndroidRuntime.h>
26#include <android_runtime/android_graphics_SurfaceTexture.h>
27#include <gui/SurfaceTexture.h>
28
29#include <androidfw/ResourceTypes.h>
30
31#include <private/hwui/DrawGlInfo.h>
32
33#include <cutils/properties.h>
34
35#include <SkBitmap.h>
36#include <SkCanvas.h>
37#include <SkMatrix.h>
38#include <SkPaint.h>
39#include <SkRegion.h>
40#include <SkScalerContext.h>
41#include <SkTemplates.h>
42#include <SkXfermode.h>
43
44#include <DisplayListRenderer.h>
45#include <LayerRenderer.h>
46#include <OpenGLRenderer.h>
47#include <SkiaShader.h>
48#include <SkiaColorFilter.h>
49#include <Rect.h>
50
51#include <TextLayout.h>
52#include <TextLayoutCache.h>
53
54namespace android {
55
56using namespace uirenderer;
57
58/**
59 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
60 *       devices. This means all the logic must be compiled only when the
61 *       preprocessor variable USE_OPENGL_RENDERER is defined.
62 */
63#ifdef USE_OPENGL_RENDERER
64
65// ----------------------------------------------------------------------------
66// Defines
67// ----------------------------------------------------------------------------
68
69// Debug
70#define DEBUG_RENDERER 0
71
72// Debug
73#if DEBUG_RENDERER
74    #define RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
75#else
76    #define RENDERER_LOGD(...)
77#endif
78
79#define MODIFIER_SHADOW 1
80#define MODIFIER_SHADER 2
81#define MODIFIER_COLOR_FILTER 4
82
83// ----------------------------------------------------------------------------
84
85static struct {
86    jmethodID set;
87} gRectClassInfo;
88
89// ----------------------------------------------------------------------------
90// Caching
91// ----------------------------------------------------------------------------
92
93static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
94        Caches::FlushMode mode) {
95    if (Caches::hasInstance()) {
96        Caches::getInstance().flush(mode);
97    }
98}
99
100static void android_view_GLES20Canvas_initCaches(JNIEnv* env, jobject clazz) {
101    if (Caches::hasInstance()) {
102        Caches::getInstance().init();
103    }
104}
105
106static void android_view_GLES20Canvas_terminateCaches(JNIEnv* env, jobject clazz) {
107    if (Caches::hasInstance()) {
108        Caches::getInstance().terminate();
109    }
110}
111
112// ----------------------------------------------------------------------------
113// Constructors
114// ----------------------------------------------------------------------------
115
116static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
117    RENDERER_LOGD("Create OpenGLRenderer");
118    return new OpenGLRenderer;
119}
120
121static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
122        OpenGLRenderer* renderer) {
123    RENDERER_LOGD("Destroy OpenGLRenderer");
124    delete renderer;
125}
126
127// ----------------------------------------------------------------------------
128// Setup
129// ----------------------------------------------------------------------------
130
131static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
132        OpenGLRenderer* renderer, jint width, jint height) {
133    renderer->setViewport(width, height);
134}
135
136static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
137        OpenGLRenderer* renderer, jboolean opaque) {
138    renderer->prepare(opaque);
139}
140
141static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
142        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
143        jboolean opaque) {
144    renderer->prepareDirty(left, top, right, bottom, opaque);
145}
146
147static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
148        OpenGLRenderer* renderer) {
149    renderer->finish();
150}
151
152static jint android_view_GLES20Canvas_getStencilSize(JNIEnv* env, jobject clazz) {
153    return OpenGLRenderer::getStencilSize();
154}
155
156// ----------------------------------------------------------------------------
157// Functor
158// ----------------------------------------------------------------------------
159
160static jint android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
161        OpenGLRenderer* renderer, Functor *functor) {
162    android::uirenderer::Rect dirty;
163    return renderer->callDrawGLFunction(functor, dirty);
164}
165
166static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
167    return Caches::getInstance().maxTextureSize;
168}
169
170static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
171    return Caches::getInstance().maxTextureSize;
172}
173
174// ----------------------------------------------------------------------------
175// State
176// ----------------------------------------------------------------------------
177
178static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
179        jint flags) {
180    return renderer->save(flags);
181}
182
183static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
184        OpenGLRenderer* renderer) {
185    return renderer->getSaveCount();
186}
187
188static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
189        OpenGLRenderer* renderer) {
190    renderer->restore();
191}
192
193static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
194        OpenGLRenderer* renderer, jint saveCount) {
195    renderer->restoreToCount(saveCount);
196}
197
198// ----------------------------------------------------------------------------
199// Layers
200// ----------------------------------------------------------------------------
201
202static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
203        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
204        SkPaint* paint, jint saveFlags) {
205    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
206}
207
208static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
209        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
210    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
211    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
212            paint, saveFlags);
213}
214
215static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
216        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
217        jint alpha, jint saveFlags) {
218    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
219}
220
221static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
222        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
223    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
224    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
225            alpha, saveFlags);
226}
227
228// ----------------------------------------------------------------------------
229// Clipping
230// ----------------------------------------------------------------------------
231
232static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
233        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
234        SkCanvas::EdgeType edge) {
235    return renderer->quickReject(left, top, right, bottom);
236}
237
238static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
239        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
240        SkRegion::Op op) {
241    return renderer->clipRect(left, top, right, bottom, op);
242}
243
244static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
245        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
246        SkRegion::Op op) {
247    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
248}
249
250static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
251        OpenGLRenderer* renderer, jobject rect) {
252    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
253
254    env->CallVoidMethod(rect, gRectClassInfo.set,
255            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
256
257    return !bounds.isEmpty();
258}
259
260// ----------------------------------------------------------------------------
261// Transforms
262// ----------------------------------------------------------------------------
263
264static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
265        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
266    renderer->translate(dx, dy);
267}
268
269static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
270        OpenGLRenderer* renderer, jfloat degrees) {
271    renderer->rotate(degrees);
272}
273
274static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
275        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
276    renderer->scale(sx, sy);
277}
278
279static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
280        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
281    renderer->skew(sx, sy);
282}
283
284static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
285        OpenGLRenderer* renderer, SkMatrix* matrix) {
286    renderer->setMatrix(matrix);
287}
288
289static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
290        OpenGLRenderer* renderer, SkMatrix* matrix) {
291    renderer->getMatrix(matrix);
292}
293
294static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
295        OpenGLRenderer* renderer, SkMatrix* matrix) {
296    renderer->concatMatrix(matrix);
297}
298
299// ----------------------------------------------------------------------------
300// Drawing
301// ----------------------------------------------------------------------------
302
303static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
304        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
305        float top, SkPaint* paint) {
306    // This object allows the renderer to allocate a global JNI ref to the buffer object.
307    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
308
309    renderer->drawBitmap(bitmap, left, top, paint);
310}
311
312static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
313        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
314        float srcLeft, float srcTop, float srcRight, float srcBottom,
315        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
316    // This object allows the renderer to allocate a global JNI ref to the buffer object.
317    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
318
319    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
320            dstLeft, dstTop, dstRight, dstBottom, paint);
321}
322
323static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
324        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
325        SkPaint* paint) {
326    // This object allows the renderer to allocate a global JNI ref to the buffer object.
327    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
328
329    renderer->drawBitmap(bitmap, matrix, paint);
330}
331
332static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
333        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
334        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
335        jintArray colors, jint colorOffset, SkPaint* paint) {
336    // This object allows the renderer to allocate a global JNI ref to the buffer object.
337    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
338
339    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
340    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
341
342    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
343
344    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
345    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
346}
347
348static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
349        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
350        float left, float top, float right, float bottom, SkPaint* paint) {
351    // This object allows the renderer to allocate a global JNI ref to the buffer object.
352    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
353
354    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
355    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
356    Res_png_9patch::deserialize(patch);
357
358    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
359            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
360            left, top, right, bottom, paint);
361
362    env->ReleaseByteArrayElements(chunks, storage, 0);
363}
364
365static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
366        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
367    renderer->drawColor(color, mode);
368}
369
370static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
371        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
372        SkPaint* paint) {
373    renderer->drawRect(left, top, right, bottom, paint);
374}
375
376static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
377        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
378        jfloat rx, jfloat ry, SkPaint* paint) {
379    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
380}
381
382static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
383        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
384    renderer->drawCircle(x, y, radius, paint);
385}
386
387static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
388        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
389        SkPaint* paint) {
390    renderer->drawOval(left, top, right, bottom, paint);
391}
392
393static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
394        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
395        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
396    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
397}
398
399static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
400        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
401    SkRegion::Iterator it(*region);
402    while (!it.done()) {
403        const SkIRect& r = it.rect();
404        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
405        it.next();
406    }
407}
408
409static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
410        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
411    jfloat* storage = env->GetFloatArrayElements(points, NULL);
412    renderer->drawPoints(storage + offset, count, paint);
413    env->ReleaseFloatArrayElements(points, storage, 0);
414}
415
416static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
417        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
418    renderer->drawPath(path, paint);
419}
420
421static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
422        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
423    jfloat* storage = env->GetFloatArrayElements(points, NULL);
424    renderer->drawLines(storage + offset, count, paint);
425    env->ReleaseFloatArrayElements(points, storage, 0);
426}
427
428// ----------------------------------------------------------------------------
429// Shaders and color filters
430// ----------------------------------------------------------------------------
431
432static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
433        OpenGLRenderer* renderer, jint modifiers) {
434    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
435    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
436    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
437}
438
439static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
440        OpenGLRenderer* renderer, SkiaShader* shader) {
441    renderer->setupShader(shader);
442}
443
444static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
445        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
446    renderer->setupColorFilter(filter);
447}
448
449static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
450        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
451    renderer->setupShadow(radius, dx, dy, color);
452}
453
454// ----------------------------------------------------------------------------
455// Draw filters
456// ----------------------------------------------------------------------------
457
458static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
459        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
460    renderer->setupPaintFilter(clearBits, setBits);
461}
462
463static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
464        OpenGLRenderer* renderer) {
465    renderer->resetPaintFilter();
466}
467
468// ----------------------------------------------------------------------------
469// Text
470// ----------------------------------------------------------------------------
471
472static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
473        jfloat x, jfloat y, int flags, SkPaint* paint) {
474    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
475            text, 0, count, count, flags);
476    if (value == NULL) {
477        return;
478    }
479    const jchar* glyphs = value->getGlyphs();
480    size_t glyphsCount = value->getGlyphsCount();
481    int bytesCount = glyphsCount * sizeof(jchar);
482    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
483}
484
485static void renderTextOnPath(OpenGLRenderer* renderer, const jchar* text, int count,
486        SkPath* path, jfloat hOffset, jfloat vOffset, int flags, SkPaint* paint) {
487    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
488            text, 0, count, count, flags);
489    if (value == NULL) {
490        return;
491    }
492    const jchar* glyphs = value->getGlyphs();
493    size_t glyphsCount = value->getGlyphsCount();
494    int bytesCount = glyphsCount * sizeof(jchar);
495    renderer->drawTextOnPath((const char*) glyphs, bytesCount, glyphsCount, path,
496            hOffset, vOffset, paint);
497}
498
499static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
500        jint start, jint count, jint contextCount, jfloat x, jfloat y,
501        int flags, SkPaint* paint) {
502    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
503            text, start, count, contextCount, flags);
504    if (value == NULL) {
505        return;
506    }
507    const jchar* glyphs = value->getGlyphs();
508    size_t glyphsCount = value->getGlyphsCount();
509    int bytesCount = glyphsCount * sizeof(jchar);
510    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
511}
512
513static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
514        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
515        jfloat x, jfloat y, jint flags, SkPaint* paint) {
516    jchar* textArray = env->GetCharArrayElements(text, NULL);
517    renderText(renderer, textArray + index, count, x, y, flags, paint);
518    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
519}
520
521static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
522        OpenGLRenderer* renderer, jstring text, jint start, jint end,
523        jfloat x, jfloat y, jint flags, SkPaint* paint) {
524    const jchar* textArray = env->GetStringChars(text, NULL);
525    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
526    env->ReleaseStringChars(text, textArray);
527}
528
529static void android_view_GLES20Canvas_drawTextArrayOnPath(JNIEnv* env, jobject clazz,
530        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
531        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
532    jchar* textArray = env->GetCharArrayElements(text, NULL);
533    renderTextOnPath(renderer, textArray + index, count, path,
534            hOffset, vOffset, flags, paint);
535    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
536}
537
538static void android_view_GLES20Canvas_drawTextOnPath(JNIEnv* env, jobject clazz,
539        OpenGLRenderer* renderer, jstring text, jint start, jint end,
540        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
541    const jchar* textArray = env->GetStringChars(text, NULL);
542    renderTextOnPath(renderer, textArray + start, end - start, path,
543            hOffset, vOffset, flags, paint);
544    env->ReleaseStringChars(text, textArray);
545}
546
547static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
548        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
549        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
550        SkPaint* paint) {
551    jchar* textArray = env->GetCharArrayElements(text, NULL);
552    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
553            count, contextCount, x, y, dirFlags, paint);
554    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
555 }
556
557static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
558        OpenGLRenderer* renderer, jstring text, jint start, jint end,
559        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
560        SkPaint* paint) {
561    const jchar* textArray = env->GetStringChars(text, NULL);
562    jint count = end - start;
563    jint contextCount = contextEnd - contextStart;
564    renderTextRun(renderer, textArray + contextStart, start - contextStart,
565            count, contextCount, x, y, dirFlags, paint);
566    env->ReleaseStringChars(text, textArray);
567}
568
569static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
570        const jfloat* positions, jint dirFlags, SkPaint* paint) {
571    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
572            text, 0, count, count, dirFlags);
573    if (value == NULL) {
574        return;
575    }
576    const jchar* glyphs = value->getGlyphs();
577    size_t glyphsCount = value->getGlyphsCount();
578    if (count < int(glyphsCount)) glyphsCount = count;
579    int bytesCount = glyphsCount * sizeof(jchar);
580
581    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
582}
583
584static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
585        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
586        jfloatArray pos, SkPaint* paint) {
587    jchar* textArray = env->GetCharArrayElements(text, NULL);
588    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
589
590    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
591
592    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
593    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
594}
595
596static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
597        OpenGLRenderer* renderer, jstring text, jint start, jint end,
598        jfloatArray pos, SkPaint* paint) {
599    const jchar* textArray = env->GetStringChars(text, NULL);
600    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
601
602    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
603
604    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
605    env->ReleaseStringChars(text, textArray);
606}
607
608// ----------------------------------------------------------------------------
609// Display lists
610// ----------------------------------------------------------------------------
611
612static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
613        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
614    return renderer->getDisplayList(displayList);
615}
616
617static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
618        jobject clazz, DisplayList* displayList) {
619    return displayList->getSize();
620}
621
622static void android_view_GLES20Canvas_setDisplayListName(JNIEnv* env,
623        jobject clazz, DisplayList* displayList, jstring name) {
624    if (name != NULL) {
625        const char* textArray = env->GetStringUTFChars(name, NULL);
626        displayList->setName(textArray);
627        env->ReleaseStringUTFChars(name, textArray);
628    }
629}
630
631static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
632        jobject clazz) {
633    return new DisplayListRenderer;
634}
635
636static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
637        jobject clazz, DisplayListRenderer* renderer) {
638    renderer->reset();
639}
640
641static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
642        jobject clazz, DisplayList* displayList) {
643    DisplayList::destroyDisplayListDeferred(displayList);
644}
645
646static jint android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
647        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
648        jint width, jint height, jobject dirty, jint flags) {
649    android::uirenderer::Rect bounds;
650    status_t status = renderer->drawDisplayList(displayList, width, height, bounds, flags);
651    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
652        env->CallVoidMethod(dirty, gRectClassInfo.set,
653                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
654    }
655    return status;
656}
657
658static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
659        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
660    renderer->outputDisplayList(displayList);
661}
662
663// ----------------------------------------------------------------------------
664// Layers
665// ----------------------------------------------------------------------------
666
667static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
668        OpenGLRenderer* renderer) {
669    renderer->interrupt();
670}
671
672static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
673        OpenGLRenderer* renderer) {
674    renderer->resume();
675}
676
677static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
678        jobject clazz, Layer* layer) {
679    if (layer) {
680        return new LayerRenderer(layer);
681    }
682    return NULL;
683}
684
685static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
686        jboolean isOpaque, jintArray layerInfo) {
687    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
688
689    if (layer) {
690        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
691        storage[0] = layer->getTexture();
692        env->ReleaseIntArrayElements(layerInfo, storage, 0);
693    }
694
695    return layer;
696}
697
698static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
699        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
700    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
701
702    if (layer) {
703        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
704        storage[0] = layer->getWidth();
705        storage[1] = layer->getHeight();
706        env->ReleaseIntArrayElements(layerInfo, storage, 0);
707    }
708
709    return layer;
710}
711
712static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
713        Layer* layer, jint width, jint height, jintArray layerInfo) {
714    LayerRenderer::resizeLayer(layer, width, height);
715
716    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
717    storage[0] = layer->getWidth();
718    storage[1] = layer->getHeight();
719    env->ReleaseIntArrayElements(layerInfo, storage, 0);
720}
721
722static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
723        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
724    float transform[16];
725    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
726
727    surfaceTexture->updateTexImage();
728    surfaceTexture->getTransformMatrix(transform);
729    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
730
731    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
732}
733
734static void android_view_GLES20Canvas_updateRenderLayer(JNIEnv* env, jobject clazz,
735        Layer* layer, OpenGLRenderer* renderer, DisplayList* displayList,
736        jint left, jint top, jint right, jint bottom) {
737    layer->updateDeferred(renderer, displayList, left, top, right, bottom);
738}
739
740static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
741        Layer* layer, SkMatrix* matrix) {
742
743    layer->getTransform().load(*matrix);
744}
745
746static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
747    LayerRenderer::destroyLayer(layer);
748}
749
750static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
751        jobject clazz, Layer* layer) {
752    LayerRenderer::destroyLayerDeferred(layer);
753}
754
755static void android_view_GLES20Canvas_flushLayer(JNIEnv* env, jobject clazz, Layer* layer) {
756    LayerRenderer::flushLayer(layer);
757}
758
759static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
760        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
761    renderer->drawLayer(layer, x, y, paint);
762}
763
764static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
765        Layer* layer, SkBitmap* bitmap) {
766    return LayerRenderer::copyLayer(layer, bitmap);
767}
768
769#endif // USE_OPENGL_RENDERER
770
771// ----------------------------------------------------------------------------
772// Common
773// ----------------------------------------------------------------------------
774
775static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
776#ifdef USE_OPENGL_RENDERER
777    char prop[PROPERTY_VALUE_MAX];
778    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
779        // not in the emulator
780        return JNI_TRUE;
781    }
782    // In the emulator this property will be set to 1 when hardware GLES is
783    // enabled, 0 otherwise. On old emulator versions it will be undefined.
784    property_get("ro.kernel.qemu.gles", prop, "0");
785    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
786#else
787    return JNI_FALSE;
788#endif
789}
790
791// ----------------------------------------------------------------------------
792// Logging
793// ----------------------------------------------------------------------------
794
795static void
796android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
797#ifdef USE_OPENGL_RENDERER
798    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
799    android::uirenderer::DisplayList::outputLogBuffer(fd);
800#endif // USE_OPENGL_RENDERER
801}
802
803// ----------------------------------------------------------------------------
804// JNI Glue
805// ----------------------------------------------------------------------------
806
807const char* const kClassPathName = "android/view/GLES20Canvas";
808
809static JNINativeMethod gMethods[] = {
810    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
811
812#ifdef USE_OPENGL_RENDERER
813    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
814    { "nInitCaches",            "()V",         (void*) android_view_GLES20Canvas_initCaches },
815    { "nTerminateCaches",       "()V",         (void*) android_view_GLES20Canvas_terminateCaches },
816
817    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
818    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
819    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
820    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
821    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
822    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
823
824    { "nGetStencilSize",    "()I",             (void*) android_view_GLES20Canvas_getStencilSize },
825
826    { "nCallDrawGLFunction", "(II)I",          (void*) android_view_GLES20Canvas_callDrawGLFunction },
827
828    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
829    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
830    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
831    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
832
833    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
834    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
835    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
836    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
837
838    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
839    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
840    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
841
842    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
843    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
844    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
845    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
846
847    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
848    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
849    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
850
851    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
852    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
853    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
854
855    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
856
857    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
858
859    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
860    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
861    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
862    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
863    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
864    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
865    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
866    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
867
868    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
869    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
870
871    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
872    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
873    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
874    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
875
876    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
877    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
878
879    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
880    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
881            (void*) android_view_GLES20Canvas_drawText },
882
883    { "nDrawTextOnPath",    "(I[CIIIFFII)V",   (void*) android_view_GLES20Canvas_drawTextArrayOnPath },
884    { "nDrawTextOnPath",    "(ILjava/lang/String;IIIFFII)V",
885            (void*) android_view_GLES20Canvas_drawTextOnPath },
886
887    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
888    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
889            (void*) android_view_GLES20Canvas_drawTextRun },
890
891    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
892    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
893            (void*) android_view_GLES20Canvas_drawPosText },
894
895    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
896            (void*) android_view_GLES20Canvas_getClipBounds },
897
898    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
899    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
900    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
901    { "nSetDisplayListName",     "(ILjava/lang/String;)V",
902                                               (void*) android_view_GLES20Canvas_setDisplayListName },
903    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;I)I",
904                                               (void*) android_view_GLES20Canvas_drawDisplayList },
905
906    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
907    { "nResetDisplayListRenderer",  "(I)V",    (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
908
909    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
910    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
911    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
912
913    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
914    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
915    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
916    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
917    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
918            (void*) android_view_GLES20Canvas_updateTextureLayer },
919    { "nUpdateRenderLayer",      "(IIIIIII)V", (void*) android_view_GLES20Canvas_updateRenderLayer },
920    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
921    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
922    { "nFlushLayer",             "(I)V",       (void*) android_view_GLES20Canvas_flushLayer },
923    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
924    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
925
926    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
927
928    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
929    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
930
931#endif
932};
933
934static JNINativeMethod gActivityThreadMethods[] = {
935    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
936                                               (void*) android_app_ActivityThread_dumpGraphics }
937};
938
939
940#ifdef USE_OPENGL_RENDERER
941    #define FIND_CLASS(var, className) \
942            var = env->FindClass(className); \
943            LOG_FATAL_IF(! var, "Unable to find class " className);
944
945    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
946            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
947            LOG_FATAL_IF(! var, "Unable to find method " methodName);
948#else
949    #define FIND_CLASS(var, className)
950    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
951#endif
952
953int register_android_view_GLES20Canvas(JNIEnv* env) {
954    jclass clazz;
955    FIND_CLASS(clazz, "android/graphics/Rect");
956    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
957
958    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
959}
960
961const char* const kActivityThreadPathName = "android/app/ActivityThread";
962
963int register_android_app_ActivityThread(JNIEnv* env) {
964    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
965            gActivityThreadMethods, NELEM(gActivityThreadMethods));
966}
967
968};
969