android_view_GLES20Canvas.cpp revision 6b7bd24659fb175fe1f0e97c86c18969918b496a 
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 "jni.h"
20#include <nativehelper/JNIHelp.h>
21#include <android_runtime/AndroidRuntime.h>
22#include <utils/ResourceTypes.h>
23
24#include <SkBitmap.h>
25#include <SkCanvas.h>
26#include <SkMatrix.h>
27#include <SkPaint.h>
28#include <SkRegion.h>
29#include <SkScalerContext.h>
30#include <SkTemplates.h>
31#include <SkXfermode.h>
32
33#include <DisplayListRenderer.h>
34#include <OpenGLDebugRenderer.h>
35#include <OpenGLRenderer.h>
36#include <SkiaShader.h>
37#include <SkiaColorFilter.h>
38#include <Rect.h>
39
40#include "TextLayout.h"
41
42namespace android {
43
44using namespace uirenderer;
45
46/**
47 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported
48 *       devices. This means all the logic must be compiled only when the
49 *       preprocessor variable USE_OPENGL_RENDERER is defined.
50 */
51#ifdef USE_OPENGL_RENDERER
52
53///////////////////////////////////////////////////////////////////////////////
54// Defines
55///////////////////////////////////////////////////////////////////////////////
56
57// Debug
58#define DEBUG_RENDERER 0
59#define PROFILE_RENDERER 0
60
61// Debug
62#if DEBUG_RENDERER
63    #define RENDERER_LOGD(...) LOGD(__VA_ARGS__)
64#else
65    #define RENDERER_LOGD(...)
66#endif
67
68// ----------------------------------------------------------------------------
69// Java APIs
70// ----------------------------------------------------------------------------
71
72static struct {
73    jclass clazz;
74    jmethodID set;
75} gRectClassInfo;
76
77// ----------------------------------------------------------------------------
78// Constructors
79// ----------------------------------------------------------------------------
80
81static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject canvas) {
82    RENDERER_LOGD("Create OpenGLRenderer");
83#if PROFILE_RENDERER
84    return new OpenGLDebugRenderer;
85#else
86    return new OpenGLRenderer;
87#endif
88}
89
90static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject canvas,
91        OpenGLRenderer* renderer) {
92    RENDERER_LOGD("Destroy OpenGLRenderer");
93    delete renderer;
94}
95
96// ----------------------------------------------------------------------------
97// Setup
98// ----------------------------------------------------------------------------
99
100static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject canvas,
101        OpenGLRenderer* renderer, jint width, jint height) {
102    renderer->setViewport(width, height);
103}
104
105static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject canvas,
106        OpenGLRenderer* renderer, jboolean opaque) {
107    renderer->prepare(opaque);
108}
109
110static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject canvas,
111        OpenGLRenderer* renderer) {
112    renderer->finish();
113}
114
115static void android_view_GLES20Canvas_acquireContext(JNIEnv* env, jobject canvas,
116        OpenGLRenderer* renderer) {
117    renderer->acquireContext();
118}
119
120static void android_view_GLES20Canvas_releaseContext(JNIEnv* env, jobject canvas,
121        OpenGLRenderer* renderer) {
122    renderer->releaseContext();
123}
124
125// ----------------------------------------------------------------------------
126// State
127// ----------------------------------------------------------------------------
128
129static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject canvas, OpenGLRenderer* renderer,
130        jint flags) {
131    return renderer->save(flags);
132}
133
134static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject canvas,
135        OpenGLRenderer* renderer) {
136    return renderer->getSaveCount();
137}
138
139static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject canvas,
140        OpenGLRenderer* renderer) {
141    renderer->restore();
142}
143
144static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject canvas,
145        OpenGLRenderer* renderer, jint saveCount) {
146    renderer->restoreToCount(saveCount);
147}
148
149// ----------------------------------------------------------------------------
150// Layers
151// ----------------------------------------------------------------------------
152
153static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject canvas,
154        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
155        SkPaint* paint, jint saveFlags) {
156    return renderer->saveLayer(left, top, right, bottom, paint, saveFlags);
157}
158
159static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject canvas,
160        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
161        jint alpha, jint saveFlags) {
162    return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags);
163}
164
165// ----------------------------------------------------------------------------
166// Clipping
167// ----------------------------------------------------------------------------
168
169static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject canvas,
170        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
171        SkCanvas::EdgeType edge) {
172    return renderer->quickReject(left, top, right, bottom);
173}
174
175static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject canvas,
176        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
177        SkRegion::Op op) {
178    return renderer->clipRect(left, top, right, bottom, op);
179}
180
181static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject canvas,
182        OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom,
183        SkRegion::Op op) {
184    return renderer->clipRect(float(left), float(top), float(right), float(bottom), op);
185}
186
187static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject canvas,
188        OpenGLRenderer* renderer, jobject rect) {
189    const android::uirenderer::Rect& bounds(renderer->getClipBounds());
190
191    env->CallVoidMethod(rect, gRectClassInfo.set,
192            int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom));
193
194    return !bounds.isEmpty();
195}
196
197// ----------------------------------------------------------------------------
198// Transforms
199// ----------------------------------------------------------------------------
200
201static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject canvas,
202        OpenGLRenderer* renderer, jfloat dx, jfloat dy) {
203    renderer->translate(dx, dy);
204}
205
206static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject canvas,
207        OpenGLRenderer* renderer, jfloat degrees) {
208    renderer->rotate(degrees);
209}
210
211static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject canvas,
212        OpenGLRenderer* renderer, jfloat sx, jfloat sy) {
213    renderer->scale(sx, sy);
214}
215
216static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject canvas,
217        OpenGLRenderer* renderer, SkMatrix* matrix) {
218    renderer->setMatrix(matrix);
219}
220
221static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject canvas,
222        OpenGLRenderer* renderer, SkMatrix* matrix) {
223    renderer->getMatrix(matrix);
224}
225
226static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject canvas,
227        OpenGLRenderer* renderer, SkMatrix* matrix) {
228    renderer->concatMatrix(matrix);
229}
230
231// ----------------------------------------------------------------------------
232// Drawing
233// ----------------------------------------------------------------------------
234
235static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject canvas,
236        OpenGLRenderer* renderer, SkBitmap* bitmap, float left, float top, SkPaint* paint) {
237    renderer->drawBitmap(bitmap, left, top, paint);
238}
239
240static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject canvas,
241        OpenGLRenderer* renderer, SkBitmap* bitmap,
242        float srcLeft, float srcTop, float srcRight, float srcBottom,
243        float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) {
244    renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom,
245            dstLeft, dstTop, dstRight, dstBottom, paint);
246}
247
248static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject canvas,
249        OpenGLRenderer* renderer, SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint) {
250    renderer->drawBitmap(bitmap, matrix, paint);
251}
252
253static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject canvas,
254        OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray chunks,
255        float left, float top, float right, float bottom, SkPaint* paint) {
256    jbyte* storage = env->GetByteArrayElements(chunks, NULL);
257    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage);
258    Res_png_9patch::deserialize(patch);
259
260    renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0],
261            patch->numXDivs, patch->numYDivs, left, top, right, bottom, paint);
262
263    env->ReleaseByteArrayElements(chunks, storage, 0);
264}
265
266static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject canvas,
267        OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) {
268    renderer->drawColor(color, mode);
269}
270
271static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas,
272        OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom,
273        SkPaint* paint) {
274    renderer->drawRect(left, top, right, bottom, paint);
275}
276
277static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject canvas,
278        OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) {
279    SkRegion::Iterator it(*region);
280    while (!it.done()) {
281        const SkIRect& r = it.rect();
282        renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
283        it.next();
284    }
285}
286
287static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject canvas,
288        OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) {
289    renderer->drawPath(path, paint);
290}
291
292static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject canvas,
293        OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) {
294    jfloat* storage = env->GetFloatArrayElements(points, NULL);
295
296    renderer->drawLines(storage + offset, count, paint);
297
298    env->ReleaseFloatArrayElements(points, storage, 0);
299}
300
301// ----------------------------------------------------------------------------
302// Shaders and color filters
303// ----------------------------------------------------------------------------
304
305static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject canvas,
306        OpenGLRenderer* renderer) {
307    renderer->resetShader();
308    renderer->resetColorFilter();
309    renderer->resetShadow();
310}
311
312static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject canvas,
313        OpenGLRenderer* renderer, SkiaShader* shader) {
314    renderer->setupShader(shader);
315}
316
317static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject canvas,
318        OpenGLRenderer* renderer, SkiaColorFilter* filter) {
319    renderer->setupColorFilter(filter);
320}
321
322static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject canvas,
323        OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) {
324    renderer->setupShadow(radius, dx, dy, color);
325}
326
327// ----------------------------------------------------------------------------
328// Text
329// ----------------------------------------------------------------------------
330
331static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
332        jfloat x, jfloat y, int flags, SkPaint* paint) {
333    const jchar *workText;
334    jchar* buffer = NULL;
335    int32_t workBytes;
336    if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) {
337        renderer->drawText((const char*) workText, workBytes, count, x, y, paint);
338        free(buffer);
339    }
340}
341
342static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
343        jint start, jint count, jint contextCount, jfloat x, jfloat y,
344        int flags, SkPaint* paint) {
345    uint8_t rtl = flags & 0x1;
346    if (rtl) {
347        SkAutoSTMalloc<80, jchar> buffer(contextCount);
348        jchar* shaped = buffer.get();
349        if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) {
350            renderer->drawText((const char*) shaped, count << 1, count, x, y, paint);
351        } else {
352            LOGW("drawTextRun error");
353        }
354    } else {
355        renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint);
356    }
357}
358
359static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject canvas,
360        OpenGLRenderer* renderer, jcharArray text, int index, int count,
361        jfloat x, jfloat y, int flags, SkPaint* paint) {
362    jchar* textArray = env->GetCharArrayElements(text, NULL);
363    renderText(renderer, textArray + index, count, x, y, flags, paint);
364    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
365}
366
367static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject canvas,
368        OpenGLRenderer* renderer, jstring text, int start, int end,
369        jfloat x, jfloat y, int flags, SkPaint* paint) {
370    const jchar* textArray = env->GetStringChars(text, NULL);
371    renderText(renderer, textArray + start, end - start, x, y, flags, paint);
372    env->ReleaseStringChars(text, textArray);
373}
374
375static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject canvas,
376        OpenGLRenderer* renderer, jcharArray text, int index, int count,
377        int contextIndex, int contextCount, jfloat x, jfloat y, int dirFlags,
378        SkPaint* paint) {
379    jchar* textArray = env->GetCharArrayElements(text, NULL);
380    renderTextRun(renderer, textArray + contextIndex, index - contextIndex,
381            count, contextCount, x, y, dirFlags, paint);
382    env->ReleaseCharArrayElements(text, textArray, JNI_ABORT);
383 }
384
385static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject canvas,
386        OpenGLRenderer* renderer, jstring text, int start, int end,
387        int contextStart, int contextEnd, jfloat x, jfloat y, int dirFlags,
388        SkPaint* paint) {
389    const jchar* textArray = env->GetStringChars(text, NULL);
390    jint count = end - start;
391    jint contextCount = contextEnd - contextStart;
392    renderTextRun(renderer, textArray + contextStart, start - contextStart,
393            count, contextCount, x, y, dirFlags, paint);
394    env->ReleaseStringChars(text, textArray);
395}
396
397// ----------------------------------------------------------------------------
398// Display lists
399// ----------------------------------------------------------------------------
400
401static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer(
402        JNIEnv* env, jobject canvas) {
403    return new DisplayListRenderer;
404}
405
406static DisplayList* android_view_GLES20Canvas_createDisplayList(JNIEnv* env,
407        jobject canvas, DisplayListRenderer* renderer) {
408    return renderer->getDisplayList();
409}
410
411static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env,
412        jobject canvas, DisplayList* displayList) {
413    delete displayList;
414}
415
416static void android_view_GLES20Canvas_drawDisplayList(JNIEnv* env,
417        jobject canvas, OpenGLRenderer* renderer, DisplayList* displayList) {
418    displayList->replay(*renderer);
419}
420
421#endif // USE_OPENGL_RENDERER
422
423// ----------------------------------------------------------------------------
424// Common
425// ----------------------------------------------------------------------------
426
427static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) {
428#ifdef USE_OPENGL_RENDERER
429    return JNI_TRUE;
430#else
431    return JNI_FALSE;
432#endif
433}
434
435// ----------------------------------------------------------------------------
436// JNI Glue
437// ----------------------------------------------------------------------------
438
439const char* const kClassPathName = "android/view/GLES20Canvas";
440
441static JNINativeMethod gMethods[] = {
442    { "nIsAvailable",       "()Z",             (void*) android_view_GLES20Canvas_isAvailable },
443
444#ifdef USE_OPENGL_RENDERER
445    { "nCreateRenderer",    "()I",             (void*) android_view_GLES20Canvas_createRenderer },
446    { "nDestroyRenderer",   "(I)V",            (void*) android_view_GLES20Canvas_destroyRenderer },
447    { "nSetViewport",       "(III)V",          (void*) android_view_GLES20Canvas_setViewport },
448    { "nPrepare",           "(IZ)V",           (void*) android_view_GLES20Canvas_prepare },
449    { "nFinish",            "(I)V",            (void*) android_view_GLES20Canvas_finish },
450    { "nAcquireContext",    "(I)V",            (void*) android_view_GLES20Canvas_acquireContext },
451    { "nReleaseContext",    "(I)V",            (void*) android_view_GLES20Canvas_releaseContext },
452
453    { "nSave",              "(II)I",           (void*) android_view_GLES20Canvas_save },
454    { "nRestore",           "(I)V",            (void*) android_view_GLES20Canvas_restore },
455    { "nRestoreToCount",    "(II)V",           (void*) android_view_GLES20Canvas_restoreToCount },
456    { "nGetSaveCount",      "(I)I",            (void*) android_view_GLES20Canvas_getSaveCount },
457
458    { "nSaveLayer",         "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayer },
459    { "nSaveLayerAlpha",    "(IFFFFII)I",      (void*) android_view_GLES20Canvas_saveLayerAlpha },
460
461    { "nQuickReject",       "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_quickReject },
462    { "nClipRect",          "(IFFFFI)Z",       (void*) android_view_GLES20Canvas_clipRectF },
463    { "nClipRect",          "(IIIIII)Z",       (void*) android_view_GLES20Canvas_clipRect },
464
465    { "nTranslate",         "(IFF)V",          (void*) android_view_GLES20Canvas_translate },
466    { "nRotate",            "(IF)V",           (void*) android_view_GLES20Canvas_rotate },
467    { "nScale",             "(IFF)V",          (void*) android_view_GLES20Canvas_scale },
468
469    { "nSetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_setMatrix },
470    { "nGetMatrix",         "(II)V",           (void*) android_view_GLES20Canvas_getMatrix },
471    { "nConcatMatrix",      "(II)V",           (void*) android_view_GLES20Canvas_concatMatrix },
472
473    { "nDrawBitmap",        "(IIFFI)V",        (void*) android_view_GLES20Canvas_drawBitmap },
474    { "nDrawBitmap",        "(IIFFFFFFFFI)V",  (void*) android_view_GLES20Canvas_drawBitmapRect },
475    { "nDrawBitmap",        "(IIII)V",         (void*) android_view_GLES20Canvas_drawBitmapMatrix },
476    { "nDrawPatch",         "(II[BFFFFI)V",    (void*) android_view_GLES20Canvas_drawPatch },
477    { "nDrawColor",         "(III)V",          (void*) android_view_GLES20Canvas_drawColor },
478    { "nDrawRect",          "(IFFFFI)V",       (void*) android_view_GLES20Canvas_drawRect },
479    { "nDrawRects",         "(III)V",          (void*) android_view_GLES20Canvas_drawRects },
480    { "nDrawPath",          "(III)V",          (void*) android_view_GLES20Canvas_drawPath },
481    { "nDrawLines",         "(I[FIII)V",       (void*) android_view_GLES20Canvas_drawLines },
482
483    { "nResetModifiers",    "(I)V",            (void*) android_view_GLES20Canvas_resetModifiers },
484    { "nSetupShader",       "(II)V",           (void*) android_view_GLES20Canvas_setupShader },
485    { "nSetupColorFilter",  "(II)V",           (void*) android_view_GLES20Canvas_setupColorFilter },
486    { "nSetupShadow",       "(IFFFI)V",        (void*) android_view_GLES20Canvas_setupShadow },
487
488    { "nDrawText",          "(I[CIIFFII)V",    (void*) android_view_GLES20Canvas_drawTextArray },
489    { "nDrawText",          "(ILjava/lang/String;IIFFII)V",
490            (void*) android_view_GLES20Canvas_drawText },
491
492    { "nDrawTextRun",       "(I[CIIIIFFII)V",  (void*) android_view_GLES20Canvas_drawTextRunArray },
493    { "nDrawTextRun",       "(ILjava/lang/String;IIIIFFII)V",
494            (void*) android_view_GLES20Canvas_drawTextRun },
495
496    { "nGetClipBounds",     "(ILandroid/graphics/Rect;)Z",
497            (void*) android_view_GLES20Canvas_getClipBounds },
498
499    { "nCreateDisplayListRenderer", "()I",     (void*) android_view_GLES20Canvas_createDisplayListRenderer },
500    { "nCreateDisplayList",  "(I)I",           (void*) android_view_GLES20Canvas_createDisplayList },
501    { "nDestroyDisplayList", "(I)V",           (void*) android_view_GLES20Canvas_destroyDisplayList },
502    { "nDrawDisplayList",    "(II)V",          (void*) android_view_GLES20Canvas_drawDisplayList },
503
504#endif
505};
506
507#ifdef USE_OPENGL_RENDERER
508    #define FIND_CLASS(var, className) \
509            var = env->FindClass(className); \
510            LOG_FATAL_IF(! var, "Unable to find class " className); \
511            var = jclass(env->NewGlobalRef(var));
512
513    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
514            var = env->GetMethodID(clazz, methodName, methodDescriptor); \
515            LOG_FATAL_IF(! var, "Unable to find method " methodName);
516#else
517    #define FIND_CLASS(var, className)
518    #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor)
519#endif
520
521int register_android_view_GLES20Canvas(JNIEnv* env) {
522    FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect");
523    GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V");
524
525    return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
526}
527
528};
529