android_view_GLES20Canvas.cpp revision b051e895ccb696604349c6c5efe7c4747e1d1ab6
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#define DEBUG_RENDERER 0 54 55// ---------------------------------------------------------------------------- 56// Java APIs 57// ---------------------------------------------------------------------------- 58 59static struct { 60 jclass clazz; 61 jmethodID set; 62} gRectClassInfo; 63 64// ---------------------------------------------------------------------------- 65// Constructors 66// ---------------------------------------------------------------------------- 67 68static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject canvas) { 69#if DEBUG_RENDERER 70 return new OpenGLDebugRenderer; 71#else 72 return new OpenGLRenderer; 73#endif 74} 75 76static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject canvas, 77 OpenGLRenderer* renderer) { 78 delete renderer; 79} 80 81// ---------------------------------------------------------------------------- 82// Setup 83// ---------------------------------------------------------------------------- 84 85static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject canvas, 86 OpenGLRenderer* renderer, jint width, jint height) { 87 renderer->setViewport(width, height); 88} 89 90static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject canvas, 91 OpenGLRenderer* renderer) { 92 renderer->prepare(); 93} 94 95static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject canvas, 96 OpenGLRenderer* renderer) { 97 renderer->finish(); 98} 99 100static void android_view_GLES20Canvas_acquireContext(JNIEnv* env, jobject canvas, 101 OpenGLRenderer* renderer) { 102 renderer->acquireContext(); 103} 104 105static void android_view_GLES20Canvas_releaseContext(JNIEnv* env, jobject canvas, 106 OpenGLRenderer* renderer) { 107 renderer->releaseContext(); 108} 109 110// ---------------------------------------------------------------------------- 111// State 112// ---------------------------------------------------------------------------- 113 114static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject canvas, OpenGLRenderer* renderer, 115 jint flags) { 116 return renderer->save(flags); 117} 118 119static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject canvas, 120 OpenGLRenderer* renderer) { 121 return renderer->getSaveCount(); 122} 123 124static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject canvas, 125 OpenGLRenderer* renderer) { 126 renderer->restore(); 127} 128 129static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject canvas, 130 OpenGLRenderer* renderer, jint saveCount) { 131 renderer->restoreToCount(saveCount); 132} 133 134// ---------------------------------------------------------------------------- 135// Layers 136// ---------------------------------------------------------------------------- 137 138static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject canvas, 139 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 140 SkPaint* paint, jint saveFlags) { 141 return renderer->saveLayer(left, top, right, bottom, paint, saveFlags); 142} 143 144static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject canvas, 145 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 146 jint alpha, jint saveFlags) { 147 return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags); 148} 149 150// ---------------------------------------------------------------------------- 151// Clipping 152// ---------------------------------------------------------------------------- 153 154static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject canvas, 155 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 156 SkCanvas::EdgeType edge) { 157 return renderer->quickReject(left, top, right, bottom); 158} 159 160static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject canvas, 161 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 162 SkRegion::Op op) { 163 return renderer->clipRect(left, top, right, bottom, op); 164} 165 166static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject canvas, 167 OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom, 168 SkRegion::Op op) { 169 return renderer->clipRect(float(left), float(top), float(right), float(bottom), op); 170} 171 172static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject canvas, 173 OpenGLRenderer* renderer, jobject rect) { 174 const android::uirenderer::Rect& bounds(renderer->getClipBounds()); 175 176 env->CallVoidMethod(rect, gRectClassInfo.set, 177 int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom)); 178 179 return !bounds.isEmpty(); 180} 181 182// ---------------------------------------------------------------------------- 183// Transforms 184// ---------------------------------------------------------------------------- 185 186static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject canvas, 187 OpenGLRenderer* renderer, jfloat dx, jfloat dy) { 188 renderer->translate(dx, dy); 189} 190 191static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject canvas, 192 OpenGLRenderer* renderer, jfloat degrees) { 193 renderer->rotate(degrees); 194} 195 196static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject canvas, 197 OpenGLRenderer* renderer, jfloat sx, jfloat sy) { 198 renderer->scale(sx, sy); 199} 200 201static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject canvas, 202 OpenGLRenderer* renderer, SkMatrix* matrix) { 203 renderer->setMatrix(matrix); 204} 205 206static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject canvas, 207 OpenGLRenderer* renderer, SkMatrix* matrix) { 208 renderer->getMatrix(matrix); 209} 210 211static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject canvas, 212 OpenGLRenderer* renderer, SkMatrix* matrix) { 213 renderer->concatMatrix(matrix); 214} 215 216// ---------------------------------------------------------------------------- 217// Drawing 218// ---------------------------------------------------------------------------- 219 220static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject canvas, 221 OpenGLRenderer* renderer, SkBitmap* bitmap, float left, float top, SkPaint* paint) { 222 renderer->drawBitmap(bitmap, left, top, paint); 223} 224 225static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject canvas, 226 OpenGLRenderer* renderer, SkBitmap* bitmap, 227 float srcLeft, float srcTop, float srcRight, float srcBottom, 228 float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) { 229 renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom, 230 dstLeft, dstTop, dstRight, dstBottom, paint); 231} 232 233static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject canvas, 234 OpenGLRenderer* renderer, SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint) { 235 renderer->drawBitmap(bitmap, matrix, paint); 236} 237 238static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject canvas, 239 OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray chunks, 240 float left, float top, float right, float bottom, SkPaint* paint) { 241 jbyte* storage = env->GetByteArrayElements(chunks, NULL); 242 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage); 243 Res_png_9patch::deserialize(patch); 244 245 renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0], 246 patch->numXDivs, patch->numYDivs, left, top, right, bottom, paint); 247 248 env->ReleaseByteArrayElements(chunks, storage, 0); 249} 250 251static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject canvas, 252 OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) { 253 renderer->drawColor(color, mode); 254} 255 256static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas, 257 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 258 SkPaint* paint) { 259 renderer->drawRect(left, top, right, bottom, paint); 260} 261 262static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject canvas, 263 OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) { 264 SkRegion::Iterator it(*region); 265 while (!it.done()) { 266 const SkIRect& r = it.rect(); 267 renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint); 268 it.next(); 269 } 270} 271 272static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject canvas, 273 OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) { 274 renderer->drawPath(path, paint); 275} 276 277static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject canvas, 278 OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) { 279 jfloat* storage = env->GetFloatArrayElements(points, NULL); 280 281 renderer->drawLines(storage + offset, count, paint); 282 283 env->ReleaseFloatArrayElements(points, storage, 0); 284} 285 286// ---------------------------------------------------------------------------- 287// Shaders and color filters 288// ---------------------------------------------------------------------------- 289 290static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject canvas, 291 OpenGLRenderer* renderer) { 292 renderer->resetShader(); 293 renderer->resetColorFilter(); 294 renderer->resetShadow(); 295} 296 297static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject canvas, 298 OpenGLRenderer* renderer, SkiaShader* shader) { 299 renderer->setupShader(shader); 300} 301 302static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject canvas, 303 OpenGLRenderer* renderer, SkiaColorFilter* filter) { 304 renderer->setupColorFilter(filter); 305} 306 307static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject canvas, 308 OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) { 309 renderer->setupShadow(radius, dx, dy, color); 310} 311 312// ---------------------------------------------------------------------------- 313// Text 314// ---------------------------------------------------------------------------- 315 316static void renderText(OpenGLRenderer* renderer, const jchar* text, int count, 317 jfloat x, jfloat y, int flags, SkPaint* paint) { 318 const jchar *workText; 319 jchar* buffer = NULL; 320 int32_t workBytes; 321 if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) { 322 renderer->drawText((const char*) workText, workBytes, count, x, y, paint); 323 free(buffer); 324 } 325} 326 327static void renderTextRun(OpenGLRenderer* renderer, const jchar* text, 328 jint start, jint count, jint contextCount, jfloat x, jfloat y, 329 int flags, SkPaint* paint) { 330 uint8_t rtl = flags & 0x1; 331 if (rtl) { 332 SkAutoSTMalloc<80, jchar> buffer(contextCount); 333 jchar* shaped = buffer.get(); 334 if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) { 335 renderer->drawText((const char*) shaped, count << 1, count, x, y, paint); 336 } else { 337 LOGW("drawTextRun error"); 338 } 339 } else { 340 renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint); 341 } 342} 343 344static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject canvas, 345 OpenGLRenderer* renderer, jcharArray text, int index, int count, 346 jfloat x, jfloat y, int flags, SkPaint* paint) { 347 jchar* textArray = env->GetCharArrayElements(text, NULL); 348 renderText(renderer, textArray + index, count, x, y, flags, paint); 349 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 350} 351 352static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject canvas, 353 OpenGLRenderer* renderer, jstring text, int start, int end, 354 jfloat x, jfloat y, int flags, SkPaint* paint) { 355 const jchar* textArray = env->GetStringChars(text, NULL); 356 renderText(renderer, textArray + start, end - start, x, y, flags, paint); 357 env->ReleaseStringChars(text, textArray); 358} 359 360static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject canvas, 361 OpenGLRenderer* renderer, jcharArray text, int index, int count, 362 int contextIndex, int contextCount, jfloat x, jfloat y, int dirFlags, 363 SkPaint* paint) { 364 jchar* textArray = env->GetCharArrayElements(text, NULL); 365 renderTextRun(renderer, textArray + contextIndex, index - contextIndex, 366 count, contextCount, x, y, dirFlags, paint); 367 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 368 } 369 370static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject canvas, 371 OpenGLRenderer* renderer, jstring text, int start, int end, 372 int contextStart, int contextEnd, jfloat x, jfloat y, int dirFlags, 373 SkPaint* paint) { 374 const jchar* textArray = env->GetStringChars(text, NULL); 375 jint count = end - start; 376 jint contextCount = contextEnd - contextStart; 377 renderTextRun(renderer, textArray + contextStart, start - contextStart, 378 count, contextCount, x, y, dirFlags, paint); 379 env->ReleaseStringChars(text, textArray); 380} 381 382// ---------------------------------------------------------------------------- 383// Display lists 384// ---------------------------------------------------------------------------- 385 386static OpenGLRenderer* android_view_GLES20Canvas_createDisplayListRenderer( 387 JNIEnv* env, jobject canvas) { 388 return new DisplayListRenderer; 389} 390 391static DisplayList* android_view_GLES20Canvas_createDisplayList(JNIEnv* env, 392 jobject canvas, DisplayListRenderer* renderer) { 393 return renderer->getDisplayList(); 394} 395 396static void android_view_GLES20Canvas_destroyDisplayList(JNIEnv* env, 397 jobject canvas, DisplayList* displayList) { 398 delete displayList; 399} 400 401static void android_view_GLES20Canvas_drawDisplayList(JNIEnv* env, 402 jobject canvas, OpenGLRenderer* renderer, DisplayList* displayList) { 403 displayList->replay(*renderer); 404} 405 406#endif // USE_OPENGL_RENDERER 407 408// ---------------------------------------------------------------------------- 409// Common 410// ---------------------------------------------------------------------------- 411 412static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) { 413#ifdef USE_OPENGL_RENDERER 414 return JNI_TRUE; 415#else 416 return JNI_FALSE; 417#endif 418} 419 420// ---------------------------------------------------------------------------- 421// JNI Glue 422// ---------------------------------------------------------------------------- 423 424const char* const kClassPathName = "android/view/GLES20Canvas"; 425 426static JNINativeMethod gMethods[] = { 427 { "nIsAvailable", "()Z", (void*) android_view_GLES20Canvas_isAvailable }, 428 429#ifdef USE_OPENGL_RENDERER 430 { "nCreateRenderer", "()I", (void*) android_view_GLES20Canvas_createRenderer }, 431 { "nDestroyRenderer", "(I)V", (void*) android_view_GLES20Canvas_destroyRenderer }, 432 { "nSetViewport", "(III)V", (void*) android_view_GLES20Canvas_setViewport }, 433 { "nPrepare", "(I)V", (void*) android_view_GLES20Canvas_prepare }, 434 { "nFinish", "(I)V", (void*) android_view_GLES20Canvas_finish }, 435 { "nAcquireContext", "(I)V", (void*) android_view_GLES20Canvas_acquireContext }, 436 { "nReleaseContext", "(I)V", (void*) android_view_GLES20Canvas_releaseContext }, 437 438 { "nSave", "(II)I", (void*) android_view_GLES20Canvas_save }, 439 { "nRestore", "(I)V", (void*) android_view_GLES20Canvas_restore }, 440 { "nRestoreToCount", "(II)V", (void*) android_view_GLES20Canvas_restoreToCount }, 441 { "nGetSaveCount", "(I)I", (void*) android_view_GLES20Canvas_getSaveCount }, 442 443 { "nSaveLayer", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayer }, 444 { "nSaveLayerAlpha", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayerAlpha }, 445 446 { "nQuickReject", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_quickReject }, 447 { "nClipRect", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_clipRectF }, 448 { "nClipRect", "(IIIIII)Z", (void*) android_view_GLES20Canvas_clipRect }, 449 450 { "nTranslate", "(IFF)V", (void*) android_view_GLES20Canvas_translate }, 451 { "nRotate", "(IF)V", (void*) android_view_GLES20Canvas_rotate }, 452 { "nScale", "(IFF)V", (void*) android_view_GLES20Canvas_scale }, 453 454 { "nSetMatrix", "(II)V", (void*) android_view_GLES20Canvas_setMatrix }, 455 { "nGetMatrix", "(II)V", (void*) android_view_GLES20Canvas_getMatrix }, 456 { "nConcatMatrix", "(II)V", (void*) android_view_GLES20Canvas_concatMatrix }, 457 458 { "nDrawBitmap", "(IIFFI)V", (void*) android_view_GLES20Canvas_drawBitmap }, 459 { "nDrawBitmap", "(IIFFFFFFFFI)V", (void*) android_view_GLES20Canvas_drawBitmapRect }, 460 { "nDrawBitmap", "(IIII)V", (void*) android_view_GLES20Canvas_drawBitmapMatrix }, 461 { "nDrawPatch", "(II[BFFFFI)V", (void*) android_view_GLES20Canvas_drawPatch }, 462 { "nDrawColor", "(III)V", (void*) android_view_GLES20Canvas_drawColor }, 463 { "nDrawRect", "(IFFFFI)V", (void*) android_view_GLES20Canvas_drawRect }, 464 { "nDrawRects", "(III)V", (void*) android_view_GLES20Canvas_drawRects }, 465 { "nDrawPath", "(III)V", (void*) android_view_GLES20Canvas_drawPath }, 466 { "nDrawLines", "(I[FIII)V", (void*) android_view_GLES20Canvas_drawLines }, 467 468 { "nResetModifiers", "(I)V", (void*) android_view_GLES20Canvas_resetModifiers }, 469 { "nSetupShader", "(II)V", (void*) android_view_GLES20Canvas_setupShader }, 470 { "nSetupColorFilter", "(II)V", (void*) android_view_GLES20Canvas_setupColorFilter }, 471 { "nSetupShadow", "(IFFFI)V", (void*) android_view_GLES20Canvas_setupShadow }, 472 473 { "nDrawText", "(I[CIIFFII)V", (void*) android_view_GLES20Canvas_drawTextArray }, 474 { "nDrawText", "(ILjava/lang/String;IIFFII)V", 475 (void*) android_view_GLES20Canvas_drawText }, 476 477 { "nDrawTextRun", "(I[CIIIIFFII)V", (void*) android_view_GLES20Canvas_drawTextRunArray }, 478 { "nDrawTextRun", "(ILjava/lang/String;IIIIFFII)V", 479 (void*) android_view_GLES20Canvas_drawTextRun }, 480 481 { "nGetClipBounds", "(ILandroid/graphics/Rect;)Z", 482 (void*) android_view_GLES20Canvas_getClipBounds }, 483 484 { "nCreateDisplayListRenderer", "()I", (void*) android_view_GLES20Canvas_createDisplayListRenderer }, 485 { "nCreateDisplayList", "(I)I", (void*) android_view_GLES20Canvas_createDisplayList }, 486 { "nDestroyDisplayList", "(I)V", (void*) android_view_GLES20Canvas_destroyDisplayList }, 487 { "nDrawDisplayList", "(II)V", (void*) android_view_GLES20Canvas_drawDisplayList }, 488 489#endif 490}; 491 492#ifdef USE_OPENGL_RENDERER 493 #define FIND_CLASS(var, className) \ 494 var = env->FindClass(className); \ 495 LOG_FATAL_IF(! var, "Unable to find class " className); \ 496 var = jclass(env->NewGlobalRef(var)); 497 498 #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \ 499 var = env->GetMethodID(clazz, methodName, methodDescriptor); \ 500 LOG_FATAL_IF(! var, "Unable to find method " methodName); 501#else 502 #define FIND_CLASS(var, className) 503 #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) 504#endif 505 506int register_android_view_GLES20Canvas(JNIEnv* env) { 507 FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect"); 508 GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V"); 509 510 return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); 511} 512 513}; 514