android_view_GLES20Canvas.cpp revision 1271e2cc80b01d577e9db339459ef0222bb9320d 
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_invokeFunctors(JNIEnv* env,
167        jobject clazz, OpenGLRenderer* renderer, jobject dirty) {
168    android::uirenderer::Rect bounds;
169    status_t status = renderer->invokeFunctors(bounds);
170    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
171        env->CallVoidMethod(dirty, gRectClassInfo.set,
172                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
173    }
174    return status;
175}
176
177// ----------------------------------------------------------------------------
178// Misc
179// ----------------------------------------------------------------------------
180
181static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
182    return Caches::getInstance().maxTextureSize;
183}
184
185static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
186    return Caches::getInstance().maxTextureSize;
187}
188
189// ----------------------------------------------------------------------------
190// State
191// ----------------------------------------------------------------------------
192
193static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
194        jint flags) {
195    return renderer->save(flags);
196}
197
198static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
199        OpenGLRenderer* renderer) {
200    return renderer->getSaveCount();
201}
202
203static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
204        OpenGLRenderer* renderer) {
205    renderer->restore();
206}
207
208static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
209        OpenGLRenderer* renderer, jint saveCount) {
210    renderer->restoreToCount(saveCount);
211}
212
213// ----------------------------------------------------------------------------
214// Layers
215// ----------------------------------------------------------------------------
216
217static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
218        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
219        SkPaint* paint, jint saveFlags) {
220    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
221}
222
223static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
224        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
225    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
226    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
227            paint, saveFlags);
228}
229
230static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
231        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
232        jint alpha, jint saveFlags) {
233    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
234}
235
236static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
237        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
238    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
239    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
240            alpha, saveFlags);
241}
242
243// ----------------------------------------------------------------------------
244// Clipping
245// ----------------------------------------------------------------------------
246
247static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
248        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
249        SkCanvas::EdgeType edge) {
250    return renderer->quickReject(left, top, right, bottom);
251}
252
253static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
254        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
255        SkRegion::Op op) {
256    return renderer->clipRect(left, top, right, bottom, op);
257}
258
259static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
260        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
261        SkRegion::Op op) {
262    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
263}
264
265static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
266        OpenGLRenderer* renderer, jobject rect) {
267    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
268
269    env->CallVoidMethod(rect, gRectClassInfo.set,
270            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
271
272    return !bounds.isEmpty();
273}
274
275// ----------------------------------------------------------------------------
276// Transforms
277// ----------------------------------------------------------------------------
278
279static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
280        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
281    renderer->translate(dx, dy);
282}
283
284static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
285        OpenGLRenderer* renderer, jfloat degrees) {
286    renderer->rotate(degrees);
287}
288
289static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
290        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
291    renderer->scale(sx, sy);
292}
293
294static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
295        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
296    renderer->skew(sx, sy);
297}
298
299static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
300        OpenGLRenderer* renderer, SkMatrix* matrix) {
301    renderer->setMatrix(matrix);
302}
303
304static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
305        OpenGLRenderer* renderer, SkMatrix* matrix) {
306    renderer->getMatrix(matrix);
307}
308
309static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
310        OpenGLRenderer* renderer, SkMatrix* matrix) {
311    renderer->concatMatrix(matrix);
312}
313
314// ----------------------------------------------------------------------------
315// Drawing
316// ----------------------------------------------------------------------------
317
318static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
319        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
320        float top, SkPaint* paint) {
321    // This object allows the renderer to allocate a global JNI ref to the buffer object.
322    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
323
324    renderer->drawBitmap(bitmap, left, top, paint);
325}
326
327static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
328        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
329        float srcLeft, float srcTop, float srcRight, float srcBottom,
330        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
331    // This object allows the renderer to allocate a global JNI ref to the buffer object.
332    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
333
334    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
335            dstLeft, dstTop, dstRight, dstBottom, paint);
336}
337
338static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
339        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
340        SkPaint* paint) {
341    // This object allows the renderer to allocate a global JNI ref to the buffer object.
342    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
343
344    renderer->drawBitmap(bitmap, matrix, paint);
345}
346
347static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
348        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
349        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
350        jintArray colors, jint colorOffset, 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    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
355    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
356
357    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
358
359    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
360    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
361}
362
363static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
364        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
365        float left, float top, float right, float bottom, SkPaint* paint) {
366    // This object allows the renderer to allocate a global JNI ref to the buffer object.
367    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
368
369    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
370    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
371    Res_png_9patch::deserialize(patch);
372
373    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
374            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
375            left, top, right, bottom, paint);
376
377    env->ReleaseByteArrayElements(chunks, storage, 0);
378}
379
380static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
381        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
382    renderer->drawColor(color, mode);
383}
384
385static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
386        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
387        SkPaint* paint) {
388    renderer->drawRect(left, top, right, bottom, paint);
389}
390
391static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
392        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
393        jfloat rx, jfloat ry, SkPaint* paint) {
394    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
395}
396
397static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
398        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
399    renderer->drawCircle(x, y, radius, paint);
400}
401
402static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
403        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
404        SkPaint* paint) {
405    renderer->drawOval(left, top, right, bottom, paint);
406}
407
408static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
409        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
410        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
411    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
412}
413
414static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
415        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
416    SkRegion::Iterator it(*region);
417    while (!it.done()) {
418        const SkIRect& r = it.rect();
419        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
420        it.next();
421    }
422}
423
424static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
425        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
426    jfloat* storage = env->GetFloatArrayElements(points, NULL);
427    renderer->drawPoints(storage + offset, count, paint);
428    env->ReleaseFloatArrayElements(points, storage, 0);
429}
430
431static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
432        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
433    renderer->drawPath(path, paint);
434}
435
436static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
437        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
438    jfloat* storage = env->GetFloatArrayElements(points, NULL);
439    renderer->drawLines(storage + offset, count, paint);
440    env->ReleaseFloatArrayElements(points, storage, 0);
441}
442
443// ----------------------------------------------------------------------------
444// Shaders and color filters
445// ----------------------------------------------------------------------------
446
447static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
448        OpenGLRenderer* renderer, jint modifiers) {
449    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
450    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
451    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
452}
453
454static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
455        OpenGLRenderer* renderer, SkiaShader* shader) {
456    renderer->setupShader(shader);
457}
458
459static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
460        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
461    renderer->setupColorFilter(filter);
462}
463
464static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
465        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
466    renderer->setupShadow(radius, dx, dy, color);
467}
468
469// ----------------------------------------------------------------------------
470// Draw filters
471// ----------------------------------------------------------------------------
472
473static void android_view_GLES20Canvas_setupPaintFilter(JNIEnv* env, jobject clazz,
474        OpenGLRenderer* renderer, jint clearBits, jint setBits) {
475    renderer->setupPaintFilter(clearBits, setBits);
476}
477
478static void android_view_GLES20Canvas_resetPaintFilter(JNIEnv* env, jobject clazz,
479        OpenGLRenderer* renderer) {
480    renderer->resetPaintFilter();
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    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
490            text, 0, count, count, flags);
491    if (value == NULL) {
492        return;
493    }
494    const jchar* glyphs = value->getGlyphs();
495    size_t glyphsCount = value->getGlyphsCount();
496    int bytesCount = glyphsCount * sizeof(jchar);
497    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
498}
499
500static void renderTextOnPath(OpenGLRenderer* renderer, const jchar* text, int count,
501        SkPath* path, jfloat hOffset, jfloat vOffset, int flags, SkPaint* paint) {
502    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
503            text, 0, count, count, 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->drawTextOnPath((const char*) glyphs, bytesCount, glyphsCount, path,
511            hOffset, vOffset, paint);
512}
513
514static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
515        jint start, jint count, jint contextCount, jfloat x, jfloat y,
516        int flags, SkPaint* paint) {
517    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
518            text, start, count, contextCount, flags);
519    if (value == NULL) {
520        return;
521    }
522    const jchar* glyphs = value->getGlyphs();
523    size_t glyphsCount = value->getGlyphsCount();
524    int bytesCount = glyphsCount * sizeof(jchar);
525    renderer->drawText((const char*) glyphs, bytesCount, glyphsCount, x, y, paint);
526}
527
528static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
529        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
530        jfloat x, jfloat y, jint flags, SkPaint* paint) {
531    jchar* textArray = env->GetCharArrayElements(text, NULL);
532    renderText(renderer, textArray + index, count, x, y, flags, paint);
533    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
534}
535
536static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
537        OpenGLRenderer* renderer, jstring text, jint start, jint end,
538        jfloat x, jfloat y, jint flags, SkPaint* paint) {
539    const jchar* textArray = env->GetStringChars(text, NULL);
540    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
541    env->ReleaseStringChars(text, textArray);
542}
543
544static void android_view_GLES20Canvas_drawTextArrayOnPath(JNIEnv* env, jobject clazz,
545        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
546        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
547    jchar* textArray = env->GetCharArrayElements(text, NULL);
548    renderTextOnPath(renderer, textArray + index, count, path,
549            hOffset, vOffset, flags, paint);
550    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
551}
552
553static void android_view_GLES20Canvas_drawTextOnPath(JNIEnv* env, jobject clazz,
554        OpenGLRenderer* renderer, jstring text, jint start, jint end,
555        SkPath* path, jfloat hOffset, jfloat vOffset, jint flags, SkPaint* paint) {
556    const jchar* textArray = env->GetStringChars(text, NULL);
557    renderTextOnPath(renderer, textArray + start, end - start, path,
558            hOffset, vOffset, flags, paint);
559    env->ReleaseStringChars(text, textArray);
560}
561
562static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
563        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
564        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
565        SkPaint* paint) {
566    jchar* textArray = env->GetCharArrayElements(text, NULL);
567    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
568            count, contextCount, x, y, dirFlags, paint);
569    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
570 }
571
572static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
573        OpenGLRenderer* renderer, jstring text, jint start, jint end,
574        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
575        SkPaint* paint) {
576    const jchar* textArray = env->GetStringChars(text, NULL);
577    jint count = end - start;
578    jint contextCount = contextEnd - contextStart;
579    renderTextRun(renderer, textArray + contextStart, start - contextStart,
580            count, contextCount, x, y, dirFlags, paint);
581    env->ReleaseStringChars(text, textArray);
582}
583
584static void renderPosText(OpenGLRenderer* renderer, const jchar* text, int count,
585        const jfloat* positions, jint dirFlags, SkPaint* paint) {
586    sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint,
587            text, 0, count, count, dirFlags);
588    if (value == NULL) {
589        return;
590    }
591    const jchar* glyphs = value->getGlyphs();
592    size_t glyphsCount = value->getGlyphsCount();
593    if (count < int(glyphsCount)) glyphsCount = count;
594    int bytesCount = glyphsCount * sizeof(jchar);
595
596    renderer->drawPosText((const char*) glyphs, bytesCount, glyphsCount, positions, paint);
597}
598
599static void android_view_GLES20Canvas_drawPosTextArray(JNIEnv* env, jobject clazz,
600        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
601        jfloatArray pos, SkPaint* paint) {
602    jchar* textArray = env->GetCharArrayElements(text, NULL);
603    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
604
605    renderPosText(renderer, textArray + index, count, positions, kBidi_LTR, paint);
606
607    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
608    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
609}
610
611static void android_view_GLES20Canvas_drawPosText(JNIEnv* env, jobject clazz,
612        OpenGLRenderer* renderer, jstring text, jint start, jint end,
613        jfloatArray pos, SkPaint* paint) {
614    const jchar* textArray = env->GetStringChars(text, NULL);
615    jfloat* positions = env->GetFloatArrayElements(pos, NULL);
616
617    renderPosText(renderer, textArray + start, end - start, positions, kBidi_LTR, paint);
618
619    env->ReleaseFloatArrayElements(pos, positions, JNI_ABORT);
620    env->ReleaseStringChars(text, textArray);
621}
622
623// ----------------------------------------------------------------------------
624// Display lists
625// ----------------------------------------------------------------------------
626
627static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
628        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
629    return renderer->getDisplayList(displayList);
630}
631
632static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
633        jobject clazz, DisplayList* displayList) {
634    return displayList->getSize();
635}
636
637static void android_view_GLES20Canvas_setDisplayListName(JNIEnv* env,
638        jobject clazz, DisplayList* displayList, jstring name) {
639    if (name != NULL) {
640        const char* textArray = env->GetStringUTFChars(name, NULL);
641        displayList->setName(textArray);
642        env->ReleaseStringUTFChars(name, textArray);
643    }
644}
645
646static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
647        jobject clazz) {
648    return new DisplayListRenderer;
649}
650
651static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
652        jobject clazz, DisplayListRenderer* renderer) {
653    renderer->reset();
654}
655
656static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
657        jobject clazz, DisplayList* displayList) {
658    DisplayList::destroyDisplayListDeferred(displayList);
659}
660
661static jint android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
662        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
663        jobject dirty, jint flags) {
664    android::uirenderer::Rect bounds;
665    status_t status = renderer->drawDisplayList(displayList, bounds, flags);
666    if (status != DrawGlInfo::kStatusDone && dirty != NULL) {
667        env->CallVoidMethod(dirty, gRectClassInfo.set,
668                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
669    }
670    return status;
671}
672
673static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
674        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
675    renderer->outputDisplayList(displayList);
676}
677
678// ----------------------------------------------------------------------------
679// Layers
680// ----------------------------------------------------------------------------
681
682static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
683        OpenGLRenderer* renderer) {
684    renderer->interrupt();
685}
686
687static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
688        OpenGLRenderer* renderer) {
689    renderer->resume();
690}
691
692static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
693        jobject clazz, Layer* layer) {
694    if (layer) {
695        return new LayerRenderer(layer);
696    }
697    return NULL;
698}
699
700static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
701        jboolean isOpaque, jintArray layerInfo) {
702    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
703
704    if (layer) {
705        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
706        storage[0] = layer->getTexture();
707        env->ReleaseIntArrayElements(layerInfo, storage, 0);
708    }
709
710    return layer;
711}
712
713static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
714        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
715    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
716
717    if (layer) {
718        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
719        storage[0] = layer->getWidth();
720        storage[1] = layer->getHeight();
721        env->ReleaseIntArrayElements(layerInfo, storage, 0);
722    }
723
724    return layer;
725}
726
727static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
728        Layer* layer, jint width, jint height, jintArray layerInfo) {
729    LayerRenderer::resizeLayer(layer, width, height);
730
731    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
732    storage[0] = layer->getWidth();
733    storage[1] = layer->getHeight();
734    env->ReleaseIntArrayElements(layerInfo, storage, 0);
735}
736
737static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
738        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
739    float transform[16];
740    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
741
742    surfaceTexture->updateTexImage();
743    surfaceTexture->getTransformMatrix(transform);
744    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
745
746    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
747}
748
749static void android_view_GLES20Canvas_updateRenderLayer(JNIEnv* env, jobject clazz,
750        Layer* layer, OpenGLRenderer* renderer, DisplayList* displayList,
751        jint left, jint top, jint right, jint bottom) {
752    layer->updateDeferred(renderer, displayList, left, top, right, bottom);
753}
754
755static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
756        Layer* layer, SkMatrix* matrix) {
757
758    layer->getTransform().load(*matrix);
759}
760
761static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
762    LayerRenderer::destroyLayer(layer);
763}
764
765static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
766        jobject clazz, Layer* layer) {
767    LayerRenderer::destroyLayerDeferred(layer);
768}
769
770static void android_view_GLES20Canvas_flushLayer(JNIEnv* env, jobject clazz, Layer* layer) {
771    LayerRenderer::flushLayer(layer);
772}
773
774static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
775        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
776    renderer->drawLayer(layer, x, y, paint);
777}
778
779static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
780        Layer* layer, SkBitmap* bitmap) {
781    return LayerRenderer::copyLayer(layer, bitmap);
782}
783
784#endif // USE_OPENGL_RENDERER
785
786// ----------------------------------------------------------------------------
787// Common
788// ----------------------------------------------------------------------------
789
790static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
791#ifdef USE_OPENGL_RENDERER
792    char prop[PROPERTY_VALUE_MAX];
793    if (property_get("ro.kernel.qemu", prop, NULL) == 0) {
794        // not in the emulator
795        return JNI_TRUE;
796    }
797    // In the emulator this property will be set to 1 when hardware GLES is
798    // enabled, 0 otherwise. On old emulator versions it will be undefined.
799    property_get("ro.kernel.qemu.gles", prop, "0");
800    return atoi(prop) == 1 ? JNI_TRUE : JNI_FALSE;
801#else
802    return JNI_FALSE;
803#endif
804}
805
806// ----------------------------------------------------------------------------
807// Logging
808// ----------------------------------------------------------------------------
809
810static void
811android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
812#ifdef USE_OPENGL_RENDERER
813    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
814    android::uirenderer::DisplayList::outputLogBuffer(fd);
815#endif // USE_OPENGL_RENDERER
816}
817
818// ----------------------------------------------------------------------------
819// JNI Glue
820// ----------------------------------------------------------------------------
821
822const char* const kClassPathName = "android/view/GLES20Canvas";
823
824static JNINativeMethod gMethods[] = {
825    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
826
827#ifdef USE_OPENGL_RENDERER
828    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
829    { "nInitCaches",            "()V",         (void*) android_view_GLES20Canvas_initCaches },
830    { "nTerminateCaches",       "()V",         (void*) android_view_GLES20Canvas_terminateCaches },
831
832    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
833    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
834    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
835    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
836    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
837    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
838
839    { "nGetStencilSize",    "()I",             (void*) android_view_GLES20Canvas_getStencilSize },
840
841    { "nCallDrawGLFunction", "(II)I",          (void*) android_view_GLES20Canvas_callDrawGLFunction },
842    { "nInvokeFunctors",         "(ILandroid/graphics/Rect;)I",
843            (void*) android_view_GLES20Canvas_invokeFunctors },
844
845    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
846    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
847    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
848    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
849
850    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
851    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
852    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
853    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
854
855    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
856    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
857    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
858
859    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
860    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
861    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
862    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
863
864    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
865    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
866    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
867
868    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
869    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
870    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
871
872    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
873
874    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
875
876    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
877    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
878    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
879    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
880    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
881    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
882    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
883    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
884
885    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
886    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
887
888    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
889    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
890    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
891    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
892
893    { "nSetupPaintFilter",  "(III)V",          (void*) android_view_GLES20Canvas_setupPaintFilter },
894    { "nResetPaintFilter",  "(I)V",            (void*) android_view_GLES20Canvas_resetPaintFilter },
895
896    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
897    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
898            (void*) android_view_GLES20Canvas_drawText },
899
900    { "nDrawTextOnPath",    "(I[CIIIFFII)V",   (void*) android_view_GLES20Canvas_drawTextArrayOnPath },
901    { "nDrawTextOnPath",    "(ILjava/lang/String;IIIFFII)V",
902            (void*) android_view_GLES20Canvas_drawTextOnPath },
903
904    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
905    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
906            (void*) android_view_GLES20Canvas_drawTextRun },
907
908    { "nDrawPosText",       "(I[CII[FI)V",     (void*) android_view_GLES20Canvas_drawPosTextArray },
909    { "nDrawPosText",       "(ILjava/lang/String;II[FI)V",
910            (void*) android_view_GLES20Canvas_drawPosText },
911
912    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
913            (void*) android_view_GLES20Canvas_getClipBounds },
914
915    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
916    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
917    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
918    { "nSetDisplayListName",     "(ILjava/lang/String;)V",
919            (void*) android_view_GLES20Canvas_setDisplayListName },
920    { "nDrawDisplayList",        "(IILandroid/graphics/Rect;I)I",
921            (void*) android_view_GLES20Canvas_drawDisplayList },
922
923    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
924    { "nResetDisplayListRenderer",  "(I)V",    (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
925
926    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
927    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
928    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
929
930    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
931    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
932    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
933    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
934    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
935            (void*) android_view_GLES20Canvas_updateTextureLayer },
936    { "nUpdateRenderLayer",      "(IIIIIII)V", (void*) android_view_GLES20Canvas_updateRenderLayer },
937    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
938    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
939    { "nFlushLayer",             "(I)V",       (void*) android_view_GLES20Canvas_flushLayer },
940    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
941    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
942
943    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
944
945    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
946    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
947
948#endif
949};
950
951static JNINativeMethod gActivityThreadMethods[] = {
952    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
953                                               (void*) android_app_ActivityThread_dumpGraphics }
954};
955
956
957#ifdef USE_OPENGL_RENDERER
958    #define FIND_CLASS(var, className) \
959            var = env->FindClass(className); \
960            LOG_FATAL_IF(! var, "Unable to find class " className);
961
962    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
963            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
964            LOG_FATAL_IF(! var, "Unable to find method " methodName);
965#else
966    #define FIND_CLASS(var, className)
967    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
968#endif
969
970int register_android_view_GLES20Canvas(JNIEnv* env) {
971    jclass clazz;
972    FIND_CLASS(clazz, "android/graphics/Rect");
973    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
974
975    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
976}
977
978const char* const kActivityThreadPathName = "android/app/ActivityThread";
979
980int register_android_app_ActivityThread(JNIEnv* env) {
981    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
982            gActivityThreadMethods, NELEM(gActivityThreadMethods));
983}
984
985};
986