android_view_GLES20Canvas.cpp revision 189887e0ae171c1b7601991442104a30e56c50ab 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OpenGLRenderer"
18
19#include <EGL/egl.h>
20
21#include "jni.h"
22#include "GraphicsJNI.h"
23#include <nativehelper/JNIHelp.h>
24#include <android_runtime/AndroidRuntime.h>
25#include <android_runtime/android_graphics_SurfaceTexture.h>
26#include <utils/ResourceTypes.h>
27
28#include <gui/SurfaceTexture.h>
29
30#include <SkBitmap.h>
31#include <SkCanvas.h>
32#include <SkMatrix.h>
33#include <SkPaint.h>
34#include <SkRegion.h>
35#include <SkScalerContext.h>
36#include <SkTemplates.h>
37#include <SkXfermode.h>
38
39#include <DisplayListRenderer.h>
40#include <LayerRenderer.h>
41#include <OpenGLRenderer.h>
42#include <SkiaShader.h>
43#include <SkiaColorFilter.h>
44#include <Rect.h>
45
46#include <TextLayout.h>
47
48namespace android {
49
50using namespace uirenderer;
51
52/**
53 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
54 *       devices. This means all the logic must be compiled only when the
55 *       preprocessor variable USE_OPENGL_RENDERER is defined.
56 */
57#ifdef USE_OPENGL_RENDERER
58
59///////////////////////////////////////////////////////////////////////////////
60// Defines
61///////////////////////////////////////////////////////////////////////////////
62
63// Debug
64#define DEBUG_RENDERER 0
65
66// Debug
67#if DEBUG_RENDERER
68    #define RENDERER_LOGD(...) LOGD(__VA_ARGS__)
69#else
70    #define RENDERER_LOGD(...)
71#endif
72
73#define MODIFIER_SHADOW 1
74#define MODIFIER_SHADER 2
75#define MODIFIER_COLOR_FILTER 4
76
77// ----------------------------------------------------------------------------
78
79static struct {
80    jmethodID set;
81} gRectClassInfo;
82
83// ----------------------------------------------------------------------------
84// Misc
85// ----------------------------------------------------------------------------
86
87static jboolean android_view_GLES20Canvas_preserveBackBuffer(JNIEnv* env, jobject clazz) {
88    EGLDisplay display = eglGetCurrentDisplay();
89    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
90
91    eglGetError();
92    eglSurfaceAttrib(display, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
93
94    EGLint error = eglGetError();
95    if (error != EGL_SUCCESS) {
96        RENDERER_LOGD("Could not enable buffer preserved swap behavior (%x)", error);
97    }
98
99    return error == EGL_SUCCESS;
100}
101
102static jboolean android_view_GLES20Canvas_isBackBufferPreserved(JNIEnv* env, jobject clazz) {
103    EGLDisplay display = eglGetCurrentDisplay();
104    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
105    EGLint value;
106
107    eglGetError();
108    eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &value);
109
110    EGLint error = eglGetError();
111    if (error != EGL_SUCCESS) {
112        RENDERER_LOGD("Could not query buffer preserved swap behavior (%x)", error);
113    }
114
115    return error == EGL_SUCCESS && value == EGL_BUFFER_PRESERVED;
116}
117
118static void android_view_GLES20Canvas_disableVsync(JNIEnv* env, jobject clazz) {
119    EGLDisplay display = eglGetCurrentDisplay();
120
121    eglGetError();
122    eglSwapInterval(display, 0);
123
124    EGLint error = eglGetError();
125    if (error != EGL_SUCCESS) {
126        RENDERER_LOGD("Could not disable v-sync (%x)", error);
127    }
128}
129
130static void android_view_GLES20Canvas_flushCaches(JNIEnv* env, jobject clazz,
131        Caches::FlushMode mode) {
132    if (Caches::hasInstance()) {
133        Caches::getInstance().flush(mode);
134    }
135}
136
137// ----------------------------------------------------------------------------
138// Constructors
139// ----------------------------------------------------------------------------
140
141static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject clazz) {
142    RENDERER_LOGD("Create OpenGLRenderer");
143    return new OpenGLRenderer;
144}
145
146static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject clazz,
147        OpenGLRenderer* renderer) {
148    RENDERER_LOGD("Destroy OpenGLRenderer");
149    delete renderer;
150}
151
152// ----------------------------------------------------------------------------
153// Setup
154// ----------------------------------------------------------------------------
155
156static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject clazz,
157        OpenGLRenderer* renderer, jint width, jint height) {
158    renderer->setViewport(width, height);
159}
160
161static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject clazz,
162        OpenGLRenderer* renderer, jboolean opaque) {
163    renderer->prepare(opaque);
164}
165
166static void android_view_GLES20Canvas_prepareDirty(JNIEnv* env, jobject clazz,
167        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
168        jboolean opaque) {
169    renderer->prepareDirty(left, top, right, bottom, opaque);
170}
171
172static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject clazz,
173        OpenGLRenderer* renderer) {
174    renderer->finish();
175}
176
177static bool android_view_GLES20Canvas_callDrawGLFunction(JNIEnv* env, jobject clazz,
178        OpenGLRenderer* renderer, Functor *functor) {
179    android::uirenderer::Rect dirty;
180    return renderer->callDrawGLFunction(functor, dirty);
181}
182
183static jint android_view_GLES20Canvas_getMaxTextureWidth(JNIEnv* env, jobject clazz) {
184    return Caches::getInstance().maxTextureSize;
185}
186
187static jint android_view_GLES20Canvas_getMaxTextureHeight(JNIEnv* env, jobject clazz) {
188    return Caches::getInstance().maxTextureSize;
189}
190
191// ----------------------------------------------------------------------------
192// State
193// ----------------------------------------------------------------------------
194
195static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject clazz, OpenGLRenderer* renderer,
196        jint flags) {
197    return renderer->save(flags);
198}
199
200static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject clazz,
201        OpenGLRenderer* renderer) {
202    return renderer->getSaveCount();
203}
204
205static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject clazz,
206        OpenGLRenderer* renderer) {
207    renderer->restore();
208}
209
210static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject clazz,
211        OpenGLRenderer* renderer, jint saveCount) {
212    renderer->restoreToCount(saveCount);
213}
214
215// ----------------------------------------------------------------------------
216// Layers
217// ----------------------------------------------------------------------------
218
219static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject clazz,
220        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
221        SkPaint* paint, jint saveFlags) {
222    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
223}
224
225static jint android_view_GLES20Canvas_saveLayerClip(JNIEnv* env, jobject clazz,
226        OpenGLRenderer* renderer, SkPaint* paint, jint saveFlags) {
227    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
228    return renderer->saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom,
229            paint, saveFlags);
230}
231
232static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject clazz,
233        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
234        jint alpha, jint saveFlags) {
235    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
236}
237
238static jint android_view_GLES20Canvas_saveLayerAlphaClip(JNIEnv* env, jobject clazz,
239        OpenGLRenderer* renderer, jint alpha, jint saveFlags) {
240    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
241    return renderer->saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom,
242            alpha, saveFlags);
243}
244
245// ----------------------------------------------------------------------------
246// Clipping
247// ----------------------------------------------------------------------------
248
249static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject clazz,
250        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
251        SkCanvas::EdgeType edge) {
252    return renderer->quickReject(left, top, right, bottom);
253}
254
255static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject clazz,
256        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
257        SkRegion::Op op) {
258    return renderer->clipRect(left, top, right, bottom, op);
259}
260
261static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject clazz,
262        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
263        SkRegion::Op op) {
264    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
265}
266
267static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject clazz,
268        OpenGLRenderer* renderer, jobject rect) {
269    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
270
271    env->CallVoidMethod(rect, gRectClassInfo.set,
272            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
273
274    return !bounds.isEmpty();
275}
276
277// ----------------------------------------------------------------------------
278// Transforms
279// ----------------------------------------------------------------------------
280
281static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject clazz,
282        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
283    renderer->translate(dx, dy);
284}
285
286static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject clazz,
287        OpenGLRenderer* renderer, jfloat degrees) {
288    renderer->rotate(degrees);
289}
290
291static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject clazz,
292        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
293    renderer->scale(sx, sy);
294}
295
296static void android_view_GLES20Canvas_skew(JNIEnv* env, jobject clazz,
297        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
298    renderer->skew(sx, sy);
299}
300
301static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject clazz,
302        OpenGLRenderer* renderer, SkMatrix* matrix) {
303    renderer->setMatrix(matrix);
304}
305
306static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject clazz,
307        OpenGLRenderer* renderer, SkMatrix* matrix) {
308    renderer->getMatrix(matrix);
309}
310
311static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject clazz,
312        OpenGLRenderer* renderer, SkMatrix* matrix) {
313    renderer->concatMatrix(matrix);
314}
315
316// ----------------------------------------------------------------------------
317// Drawing
318// ----------------------------------------------------------------------------
319
320static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject clazz,
321        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, float left,
322        float top, SkPaint* paint) {
323    // This object allows the renderer to allocate a global JNI ref to the buffer object.
324    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
325
326    renderer->drawBitmap(bitmap, left, top, paint);
327}
328
329static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject clazz,
330        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
331        float srcLeft, float srcTop, float srcRight, float srcBottom,
332        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
333    // This object allows the renderer to allocate a global JNI ref to the buffer object.
334    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
335
336    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
337            dstLeft, dstTop, dstRight, dstBottom, paint);
338}
339
340static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject clazz,
341        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, SkMatrix* matrix,
342        SkPaint* paint) {
343    // This object allows the renderer to allocate a global JNI ref to the buffer object.
344    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
345
346    renderer->drawBitmap(bitmap, matrix, paint);
347}
348
349static void android_view_GLES20Canvas_drawBitmapMesh(JNIEnv* env, jobject clazz,
350        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer,
351        jint meshWidth, jint meshHeight, jfloatArray vertices, jint offset,
352        jintArray colors, jint colorOffset, SkPaint* paint) {
353    // This object allows the renderer to allocate a global JNI ref to the buffer object.
354    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
355
356    jfloat* verticesArray = vertices ? env->GetFloatArrayElements(vertices, NULL) + offset : NULL;
357    jint* colorsArray = colors ? env->GetIntArrayElements(colors, NULL) + colorOffset : NULL;
358
359    renderer->drawBitmapMesh(bitmap, meshWidth, meshHeight, verticesArray, colorsArray, paint);
360
361    if (vertices) env->ReleaseFloatArrayElements(vertices, verticesArray, 0);
362    if (colors) env->ReleaseIntArrayElements(colors, colorsArray, 0);
363}
364
365static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject clazz,
366        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray buffer, jbyteArray chunks,
367        float left, float top, float right, float bottom, SkPaint* paint) {
368    // This object allows the renderer to allocate a global JNI ref to the buffer object.
369    JavaHeapBitmapRef bitmapRef(env, bitmap, buffer);
370
371    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
372    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
373    Res_png_9patch::deserialize(patch);
374
375    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
376            &patch->colors[0], patch->numXDivs, patch->numYDivs, patch->numColors,
377            left, top, right, bottom, paint);
378
379    env->ReleaseByteArrayElements(chunks, storage, 0);
380}
381
382static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject clazz,
383        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
384    renderer->drawColor(color, mode);
385}
386
387static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject clazz,
388        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
389        SkPaint* paint) {
390    renderer->drawRect(left, top, right, bottom, paint);
391}
392
393static void android_view_GLES20Canvas_drawRoundRect(JNIEnv* env, jobject clazz,
394        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
395        jfloat rx, jfloat ry, SkPaint* paint) {
396    renderer->drawRoundRect(left, top, right, bottom, rx, ry, paint);
397}
398
399static void android_view_GLES20Canvas_drawCircle(JNIEnv* env, jobject clazz,
400        OpenGLRenderer* renderer, jfloat x, jfloat y, jfloat radius, SkPaint* paint) {
401    renderer->drawCircle(x, y, radius, paint);
402}
403
404static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
405        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
406        SkPaint* paint) {
407    renderer->drawOval(left, top, right, bottom, paint);
408}
409
410static void android_view_GLES20Canvas_drawArc(JNIEnv* env, jobject clazz,
411        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
412        jfloat startAngle, jfloat sweepAngle, jboolean useCenter, SkPaint* paint) {
413    renderer->drawArc(left, top, right, bottom, startAngle, sweepAngle, useCenter, paint);
414}
415
416static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject clazz,
417        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
418    SkRegion::Iterator it(*region);
419    while (!it.done()) {
420        const SkIRect& r = it.rect();
421        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
422        it.next();
423    }
424}
425
426static void android_view_GLES20Canvas_drawPoints(JNIEnv* env, jobject clazz,
427        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
428    jfloat* storage = env->GetFloatArrayElements(points, NULL);
429    renderer->drawPoints(storage + offset, count, paint);
430    env->ReleaseFloatArrayElements(points, storage, 0);
431}
432
433static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject clazz,
434        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
435    renderer->drawPath(path, paint);
436}
437
438static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject clazz,
439        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
440    jfloat* storage = env->GetFloatArrayElements(points, NULL);
441    renderer->drawLines(storage + offset, count, paint);
442    env->ReleaseFloatArrayElements(points, storage, 0);
443}
444
445// ----------------------------------------------------------------------------
446// Shaders and color filters
447// ----------------------------------------------------------------------------
448
449static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject clazz,
450        OpenGLRenderer* renderer, jint modifiers) {
451    if (modifiers & MODIFIER_SHADOW) renderer->resetShadow();
452    if (modifiers & MODIFIER_SHADER) renderer->resetShader();
453    if (modifiers & MODIFIER_COLOR_FILTER) renderer->resetColorFilter();
454}
455
456static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject clazz,
457        OpenGLRenderer* renderer, SkiaShader* shader) {
458    renderer->setupShader(shader);
459}
460
461static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject clazz,
462        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
463    renderer->setupColorFilter(filter);
464}
465
466static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject clazz,
467        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
468    renderer->setupShadow(radius, dx, dy, color);
469}
470
471// ----------------------------------------------------------------------------
472// Text
473// ----------------------------------------------------------------------------
474
475static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
476        jfloat x, jfloat y, int flags, SkPaint* paint) {
477#if RTL_USE_HARFBUZZ
478    sp<TextLayoutCacheValue> value;
479#if USE_TEXT_LAYOUT_CACHE
480    value = gTextLayoutCache.getValue(paint, text, 0, count, count, flags);
481    if (value == NULL) {
482        LOGE("Cannot get TextLayoutCache value");
483        return ;
484    }
485#else
486    value = new TextLayoutCacheValue();
487    value->computeValues(paint, text, 0, count, count, flags);
488#endif
489    const jchar* glyphArray = value->getGlyphs();
490    int glyphCount = value->getGlyphsCount();
491    int bytesCount = glyphCount * sizeof(jchar);
492    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
493#else
494    const jchar *workText;
495    jchar* buffer = NULL;
496    int32_t workBytes;
497    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
498        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
499        free(buffer);
500    }
501#endif
502}
503
504static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
505        jint start, jint count, jint contextCount, jfloat x, jfloat y,
506        int flags, SkPaint* paint) {
507#if RTL_USE_HARFBUZZ
508    sp<TextLayoutCacheValue> value;
509#if USE_TEXT_LAYOUT_CACHE
510    value = gTextLayoutCache.getValue(paint, text, start, count, contextCount, flags);
511    if (value == NULL) {
512        LOGE("Cannot get TextLayoutCache value");
513        return ;
514    }
515#else
516    value = new TextLayoutCacheValue();
517    value->computeValues(paint, text, start, count, contextCount, flags);
518#endif
519    const jchar* glyphArray = value->getGlyphs();
520    int glyphCount = value->getGlyphsCount();
521    int bytesCount = glyphCount * sizeof(jchar);
522    renderer->drawText((const char*) glyphArray, bytesCount, glyphCount, x, y, paint);
523#else
524    uint8_t rtl = flags & 0x1;
525    if (rtl) {
526        SkAutoSTMalloc<80, jchar> buffer(contextCount);
527        jchar* shaped = buffer.get();
528        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
529            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
530        } else {
531            LOGW("drawTextRun error");
532        }
533    } else {
534        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
535    }
536#endif
537}
538
539static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject clazz,
540        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
541        jfloat x, jfloat y, jint flags, SkPaint* paint) {
542    jchar* textArray = env->GetCharArrayElements(text, NULL);
543    renderText(renderer, textArray + index, count, x, y, flags, paint);
544    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
545}
546
547static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject clazz,
548        OpenGLRenderer* renderer, jstring text, jint start, jint end,
549        jfloat x, jfloat y, jint flags, SkPaint* paint) {
550    const jchar* textArray = env->GetStringChars(text, NULL);
551    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
552    env->ReleaseStringChars(text, textArray);
553}
554
555static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject clazz,
556        OpenGLRenderer* renderer, jcharArray text, jint index, jint count,
557        jint contextIndex, jint contextCount, jfloat x, jfloat y, jint dirFlags,
558        SkPaint* paint) {
559    jchar* textArray = env->GetCharArrayElements(text, NULL);
560    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
561            count, contextCount, x, y, dirFlags, paint);
562    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
563 }
564
565static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject clazz,
566        OpenGLRenderer* renderer, jstring text, jint start, jint end,
567        jint contextStart, int contextEnd, jfloat x, jfloat y, jint dirFlags,
568        SkPaint* paint) {
569    const jchar* textArray = env->GetStringChars(text, NULL);
570    jint count = end - start;
571    jint contextCount = contextEnd - contextStart;
572    renderTextRun(renderer, textArray + contextStart, start - contextStart,
573            count, contextCount, x, y, dirFlags, paint);
574    env->ReleaseStringChars(text, textArray);
575}
576
577// ----------------------------------------------------------------------------
578// Display lists
579// ----------------------------------------------------------------------------
580
581static DisplayList* android_view_GLES20Canvas_getDisplayList(JNIEnv* env,
582        jobject clazz, DisplayListRenderer* renderer, DisplayList* displayList) {
583    return renderer->getDisplayList(displayList);
584}
585
586static jint android_view_GLES20Canvas_getDisplayListSize(JNIEnv* env,
587        jobject clazz, DisplayList* displayList) {
588    return displayList->getSize();
589}
590
591static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(JNIEnv* env,
592        jobject clazz) {
593    return new DisplayListRenderer;
594}
595
596static void android_view_GLES20Canvas_resetDisplayListRenderer(JNIEnv* env,
597        jobject clazz, DisplayListRenderer* renderer) {
598    renderer->reset();
599}
600
601static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
602        jobject clazz, DisplayList* displayList) {
603    delete displayList;
604}
605
606static bool android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
607        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList,
608        jint width, jint height, jobject dirty) {
609    android::uirenderer::Rect bounds;
610    bool redraw = renderer->drawDisplayList(displayList, width, height, bounds);
611    if (redraw && dirty != NULL) {
612        env->CallVoidMethod(dirty, gRectClassInfo.set,
613                int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
614    }
615    return redraw;
616}
617
618static void android_view_GLES20Canvas_outputDisplayList(JNIEnv* env,
619        jobject clazz, OpenGLRenderer* renderer, DisplayList* displayList) {
620    renderer->outputDisplayList(displayList);
621}
622
623// ----------------------------------------------------------------------------
624// Layers
625// ----------------------------------------------------------------------------
626
627static void android_view_GLES20Canvas_interrupt(JNIEnv* env, jobject clazz,
628        OpenGLRenderer* renderer) {
629    renderer->interrupt();
630}
631
632static void android_view_GLES20Canvas_resume(JNIEnv* env, jobject clazz,
633        OpenGLRenderer* renderer) {
634    renderer->resume();
635}
636
637static OpenGLRenderer* android_view_GLES20Canvas_createLayerRenderer(JNIEnv* env,
638        jobject clazz, Layer* layer) {
639    if (layer) {
640        return new LayerRenderer(layer);
641    }
642    return NULL;
643}
644
645static Layer* android_view_GLES20Canvas_createTextureLayer(JNIEnv* env, jobject clazz,
646        jboolean isOpaque, jintArray layerInfo) {
647    Layer* layer = LayerRenderer::createTextureLayer(isOpaque);
648
649    if (layer) {
650        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
651        storage[0] = layer->getTexture();
652        env->ReleaseIntArrayElements(layerInfo, storage, 0);
653    }
654
655    return layer;
656}
657
658static Layer* android_view_GLES20Canvas_createLayer(JNIEnv* env, jobject clazz,
659        jint width, jint height, jboolean isOpaque, jintArray layerInfo) {
660    Layer* layer = LayerRenderer::createLayer(width, height, isOpaque);
661
662    if (layer) {
663        jint* storage = env->GetIntArrayElements(layerInfo, NULL);
664        storage[0] = layer->getWidth();
665        storage[1] = layer->getHeight();
666        env->ReleaseIntArrayElements(layerInfo, storage, 0);
667    }
668
669    return layer;
670}
671
672static void android_view_GLES20Canvas_resizeLayer(JNIEnv* env, jobject clazz,
673        Layer* layer, jint width, jint height, jintArray layerInfo) {
674    LayerRenderer::resizeLayer(layer, width, height);
675
676    jint* storage = env->GetIntArrayElements(layerInfo, NULL);
677    storage[0] = layer->getWidth();
678    storage[1] = layer->getHeight();
679    env->ReleaseIntArrayElements(layerInfo, storage, 0);
680}
681
682static void android_view_GLES20Canvas_updateTextureLayer(JNIEnv* env, jobject clazz,
683        Layer* layer, jint width, jint height, jboolean isOpaque, jobject surface) {
684    float transform[16];
685    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, surface));
686
687    surfaceTexture->updateTexImage();
688    surfaceTexture->getTransformMatrix(transform);
689    GLenum renderTarget = surfaceTexture->getCurrentTextureTarget();
690
691    LayerRenderer::updateTextureLayer(layer, width, height, isOpaque, renderTarget, transform);
692}
693
694static void android_view_GLES20Canvas_setTextureLayerTransform(JNIEnv* env, jobject clazz,
695        Layer* layer, SkMatrix* matrix) {
696
697    layer->getTransform().load(*matrix);
698}
699
700static void android_view_GLES20Canvas_destroyLayer(JNIEnv* env, jobject clazz, Layer* layer) {
701    LayerRenderer::destroyLayer(layer);
702}
703
704static void android_view_GLES20Canvas_destroyLayerDeferred(JNIEnv* env,
705        jobject clazz, Layer* layer) {
706    LayerRenderer::destroyLayerDeferred(layer);
707}
708
709static void android_view_GLES20Canvas_drawLayer(JNIEnv* env, jobject clazz,
710        OpenGLRenderer* renderer, Layer* layer, jfloat x, jfloat y, SkPaint* paint) {
711    renderer->drawLayer(layer, x, y, paint);
712}
713
714static jboolean android_view_GLES20Canvas_copyLayer(JNIEnv* env, jobject clazz,
715        Layer* layer, SkBitmap* bitmap) {
716    return LayerRenderer::copyLayer(layer, bitmap);
717}
718
719#endif // USE_OPENGL_RENDERER
720
721// ----------------------------------------------------------------------------
722// Common
723// ----------------------------------------------------------------------------
724
725static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
726#ifdef USE_OPENGL_RENDERER
727    return JNI_TRUE;
728#else
729    return JNI_FALSE;
730#endif
731}
732
733// ----------------------------------------------------------------------------
734// Logging
735// ----------------------------------------------------------------------------
736
737static void
738android_app_ActivityThread_dumpGraphics(JNIEnv* env, jobject clazz, jobject javaFileDescriptor) {
739#ifdef USE_OPENGL_RENDERER
740    int fd = jniGetFDFromFileDescriptor(env, javaFileDescriptor);
741    android::uirenderer::DisplayList::outputLogBuffer(fd);
742#endif // USE_OPENGL_RENDERER
743}
744
745// ----------------------------------------------------------------------------
746// JNI Glue
747// ----------------------------------------------------------------------------
748
749const char* const kClassPathName = "android/view/GLES20Canvas";
750
751static JNINativeMethod gMethods[] = {
752    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
753
754#ifdef USE_OPENGL_RENDERER
755    { "nIsBackBufferPreserved", "()Z",         (void*) android_view_GLES20Canvas_isBackBufferPreserved },
756    { "nPreserveBackBuffer",    "()Z",         (void*) android_view_GLES20Canvas_preserveBackBuffer },
757    { "nDisableVsync",          "()V",         (void*) android_view_GLES20Canvas_disableVsync },
758    { "nFlushCaches",           "(I)V",        (void*) android_view_GLES20Canvas_flushCaches },
759
760    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
761    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
762    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
763    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
764    { "nPrepareDirty",      "(IIIIIZ)V",       (void*) android_view_GLES20Canvas_prepareDirty },
765    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
766
767    { "nCallDrawGLFunction", "(II)Z",
768            (void*) android_view_GLES20Canvas_callDrawGLFunction },
769
770    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
771    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
772    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
773    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
774
775    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
776    { "nSaveLayer",         "(III)I",          (void*) android_view_GLES20Canvas_saveLayerClip },
777    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
778    { "nSaveLayerAlpha",    "(III)I",          (void*) android_view_GLES20Canvas_saveLayerAlphaClip },
779
780    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
781    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
782    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
783
784    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
785    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
786    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
787    { "nSkew",              "(IFF)V",          (void*) android_view_GLES20Canvas_skew },
788
789    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
790    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
791    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
792
793    { "nDrawBitmap",        "(II[BFFI)V",      (void*) android_view_GLES20Canvas_drawBitmap },
794    { "nDrawBitmap",        "(II[BFFFFFFFFI)V",(void*) android_view_GLES20Canvas_drawBitmapRect },
795    { "nDrawBitmap",        "(II[BII)V",       (void*) android_view_GLES20Canvas_drawBitmapMatrix },
796
797    { "nDrawBitmapMesh",    "(II[BII[FI[III)V",(void*) android_view_GLES20Canvas_drawBitmapMesh },
798
799    { "nDrawPatch",         "(II[B[BFFFFI)V",  (void*) android_view_GLES20Canvas_drawPatch },
800
801    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
802    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
803    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
804    { "nDrawRoundRect",     "(IFFFFFFI)V",     (void*) android_view_GLES20Canvas_drawRoundRect },
805    { "nDrawCircle",        "(IFFFI)V",        (void*) android_view_GLES20Canvas_drawCircle },
806    { "nDrawOval",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawOval },
807    { "nDrawArc",           "(IFFFFFFZI)V",    (void*) android_view_GLES20Canvas_drawArc },
808    { "nDrawPoints",        "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawPoints },
809
810    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
811    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
812
813    { "nResetModifiers",    "(II)V",           (void*) android_view_GLES20Canvas_resetModifiers },
814    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
815    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
816    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
817
818    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
819    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
820            (void*) android_view_GLES20Canvas_drawText },
821
822    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
823    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
824            (void*) android_view_GLES20Canvas_drawTextRun },
825
826    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
827            (void*) android_view_GLES20Canvas_getClipBounds },
828
829    { "nGetDisplayList",         "(II)I",      (void*) android_view_GLES20Canvas_getDisplayList },
830    { "nDestroyDisplayList",     "(I)V",       (void*) android_view_GLES20Canvas_destroyDisplayList },
831    { "nGetDisplayListSize",     "(I)I",       (void*) android_view_GLES20Canvas_getDisplayListSize },
832    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
833    { "nResetDisplayListRenderer", "(I)V",     (void*) android_view_GLES20Canvas_resetDisplayListRenderer },
834    { "nDrawDisplayList",        "(IIIILandroid/graphics/Rect;)Z",
835                                               (void*) android_view_GLES20Canvas_drawDisplayList },
836    { "nOutputDisplayList",      "(II)V",      (void*) android_view_GLES20Canvas_outputDisplayList },
837    { "nInterrupt",              "(I)V",       (void*) android_view_GLES20Canvas_interrupt },
838    { "nResume",                 "(I)V",       (void*) android_view_GLES20Canvas_resume },
839
840    { "nCreateLayerRenderer",    "(I)I",       (void*) android_view_GLES20Canvas_createLayerRenderer },
841    { "nCreateLayer",            "(IIZ[I)I",   (void*) android_view_GLES20Canvas_createLayer },
842    { "nResizeLayer",            "(III[I)V" ,  (void*) android_view_GLES20Canvas_resizeLayer },
843    { "nCreateTextureLayer",     "(Z[I)I",     (void*) android_view_GLES20Canvas_createTextureLayer },
844    { "nUpdateTextureLayer",     "(IIIZLandroid/graphics/SurfaceTexture;)V",
845                                               (void*) android_view_GLES20Canvas_updateTextureLayer },
846    { "nSetTextureLayerTransform", "(II)V",    (void*) android_view_GLES20Canvas_setTextureLayerTransform },
847    { "nDestroyLayer",           "(I)V",       (void*) android_view_GLES20Canvas_destroyLayer },
848    { "nDestroyLayerDeferred",   "(I)V",       (void*) android_view_GLES20Canvas_destroyLayerDeferred },
849    { "nDrawLayer",              "(IIFFI)V",   (void*) android_view_GLES20Canvas_drawLayer },
850    { "nCopyLayer",              "(II)Z",      (void*) android_view_GLES20Canvas_copyLayer },
851
852    { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_GLES20Canvas_getMaxTextureWidth },
853    { "nGetMaximumTextureHeight", "()I",       (void*) android_view_GLES20Canvas_getMaxTextureHeight },
854
855#endif
856};
857
858static JNINativeMethod gActivityThreadMethods[] = {
859    { "dumpGraphicsInfo",        "(Ljava/io/FileDescriptor;)V",
860                                               (void*) android_app_ActivityThread_dumpGraphics }
861};
862
863
864#ifdef USE_OPENGL_RENDERER
865    #define FIND_CLASS(var, className) \
866            var = env->FindClass(className); \
867            LOG_FATAL_IF(! var, "Unable to find class " className);
868
869    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
870            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
871            LOG_FATAL_IF(! var, "Unable to find method " methodName);
872#else
873    #define FIND_CLASS(var, className)
874    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
875#endif
876
877int register_android_view_GLES20Canvas(JNIEnv* env) {
878    jclass clazz;
879    FIND_CLASS(clazz, "android/graphics/Rect");
880    GET_METHOD_ID(gRectClassInfo.set, clazz, "set", "(IIII)V");
881
882    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
883}
884
885const char* const kActivityThreadPathName = "android/app/ActivityThread";
886
887int register_android_app_ActivityThread(JNIEnv* env) {
888    return AndroidRuntime::registerNativeMethods(env, kActivityThreadPathName,
889            gActivityThreadMethods, NELEM(gActivityThreadMethods));
890}
891
892};
893