OpenGLRenderer.h revision e63f7c622a2086aefa80983c6f41b74fb166bb42
15baf6324a97430016026419deaef246ad75430fcStephen Hines/* 25baf6324a97430016026419deaef246ad75430fcStephen Hines * Copyright (C) 2010 The Android Open Source Project 35baf6324a97430016026419deaef246ad75430fcStephen Hines * 45baf6324a97430016026419deaef246ad75430fcStephen Hines * Licensed under the Apache License, Version 2.0 (the "License"); 55baf6324a97430016026419deaef246ad75430fcStephen Hines * you may not use this file except in compliance with the License. 65baf6324a97430016026419deaef246ad75430fcStephen Hines * You may obtain a copy of the License at 75baf6324a97430016026419deaef246ad75430fcStephen Hines * 85baf6324a97430016026419deaef246ad75430fcStephen Hines * http://www.apache.org/licenses/LICENSE-2.0 95baf6324a97430016026419deaef246ad75430fcStephen Hines * 105baf6324a97430016026419deaef246ad75430fcStephen Hines * Unless required by applicable law or agreed to in writing, software 115baf6324a97430016026419deaef246ad75430fcStephen Hines * distributed under the License is distributed on an "AS IS" BASIS, 125baf6324a97430016026419deaef246ad75430fcStephen Hines * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 135baf6324a97430016026419deaef246ad75430fcStephen Hines * See the License for the specific language governing permissions and 145baf6324a97430016026419deaef246ad75430fcStephen Hines * limitations under the License. 155baf6324a97430016026419deaef246ad75430fcStephen Hines */ 165baf6324a97430016026419deaef246ad75430fcStephen Hines 17593a894650e81be54173106ec266f0311cebebd3Stephen Hines#ifndef ANDROID_HWUI_OPENGL_RENDERER_H 18593a894650e81be54173106ec266f0311cebebd3Stephen Hines#define ANDROID_HWUI_OPENGL_RENDERER_H 195baf6324a97430016026419deaef246ad75430fcStephen Hines 205baf6324a97430016026419deaef246ad75430fcStephen Hines#include <GLES2/gl2.h> 215baf6324a97430016026419deaef246ad75430fcStephen Hines#include <GLES2/gl2ext.h> 225baf6324a97430016026419deaef246ad75430fcStephen Hines 235baf6324a97430016026419deaef246ad75430fcStephen Hines#include <SkBitmap.h> 245baf6324a97430016026419deaef246ad75430fcStephen Hines#include <SkMatrix.h> 255baf6324a97430016026419deaef246ad75430fcStephen Hines#include <SkPaint.h> 265baf6324a97430016026419deaef246ad75430fcStephen Hines#include <SkRegion.h> 27593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include <SkShader.h> 28593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include <SkXfermode.h> 295baf6324a97430016026419deaef246ad75430fcStephen Hines 305baf6324a97430016026419deaef246ad75430fcStephen Hines#include <utils/Functor.h> 315baf6324a97430016026419deaef246ad75430fcStephen Hines#include <utils/RefBase.h> 325baf6324a97430016026419deaef246ad75430fcStephen Hines#include <utils/SortedVector.h> 335baf6324a97430016026419deaef246ad75430fcStephen Hines#include <utils/Vector.h> 345baf6324a97430016026419deaef246ad75430fcStephen Hines 355baf6324a97430016026419deaef246ad75430fcStephen Hines#include <cutils/compiler.h> 36593a894650e81be54173106ec266f0311cebebd3Stephen Hines 37593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include <androidfw/ResourceTypes.h> 38593a894650e81be54173106ec266f0311cebebd3Stephen Hines 395baf6324a97430016026419deaef246ad75430fcStephen Hines#include "Debug.h" 405baf6324a97430016026419deaef246ad75430fcStephen Hines#include "Extensions.h" 41593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include "Matrix.h" 42593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include "Program.h" 435baf6324a97430016026419deaef246ad75430fcStephen Hines#include "Rect.h" 44593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include "Snapshot.h" 455baf6324a97430016026419deaef246ad75430fcStephen Hines#include "Vertex.h" 46593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include "SkiaShader.h" 47593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include "SkiaColorFilter.h" 48593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include "UvMapper.h" 49593a894650e81be54173106ec266f0311cebebd3Stephen Hines#include "Caches.h" 505baf6324a97430016026419deaef246ad75430fcStephen Hines 515baf6324a97430016026419deaef246ad75430fcStephen Hinesnamespace android { 525baf6324a97430016026419deaef246ad75430fcStephen Hinesnamespace uirenderer { 535baf6324a97430016026419deaef246ad75430fcStephen Hines 54593a894650e81be54173106ec266f0311cebebd3Stephen Hinesstruct DrawModifiers { 55593a894650e81be54173106ec266f0311cebebd3Stephen Hines DrawModifiers() { 56593a894650e81be54173106ec266f0311cebebd3Stephen Hines reset(); 57593a894650e81be54173106ec266f0311cebebd3Stephen Hines } 58593a894650e81be54173106ec266f0311cebebd3Stephen Hines 59593a894650e81be54173106ec266f0311cebebd3Stephen Hines void reset() { 60593a894650e81be54173106ec266f0311cebebd3Stephen Hines memset(this, 0, sizeof(DrawModifiers)); 61593a894650e81be54173106ec266f0311cebebd3Stephen Hines } 62593a894650e81be54173106ec266f0311cebebd3Stephen Hines 63593a894650e81be54173106ec266f0311cebebd3Stephen Hines SkiaShader* mShader; 64593a894650e81be54173106ec266f0311cebebd3Stephen Hines SkiaColorFilter* mColorFilter; 65593a894650e81be54173106ec266f0311cebebd3Stephen Hines float mOverrideLayerAlpha; 66593a894650e81be54173106ec266f0311cebebd3Stephen Hines 67593a894650e81be54173106ec266f0311cebebd3Stephen Hines // Drop shadow 68593a894650e81be54173106ec266f0311cebebd3Stephen Hines bool mHasShadow; 695baf6324a97430016026419deaef246ad75430fcStephen Hines float mShadowRadius; 70593a894650e81be54173106ec266f0311cebebd3Stephen Hines float mShadowDx; 71593a894650e81be54173106ec266f0311cebebd3Stephen Hines float mShadowDy; 72593a894650e81be54173106ec266f0311cebebd3Stephen Hines int mShadowColor; 73593a894650e81be54173106ec266f0311cebebd3Stephen Hines 74593a894650e81be54173106ec266f0311cebebd3Stephen Hines // Draw filters 75593a894650e81be54173106ec266f0311cebebd3Stephen Hines bool mHasDrawFilter; 76593a894650e81be54173106ec266f0311cebebd3Stephen Hines int mPaintFilterClearBits; 77593a894650e81be54173106ec266f0311cebebd3Stephen Hines int mPaintFilterSetBits; 78593a894650e81be54173106ec266f0311cebebd3Stephen Hines}; 795baf6324a97430016026419deaef246ad75430fcStephen Hines 805baf6324a97430016026419deaef246ad75430fcStephen Hinesenum StateDeferFlags { 815baf6324a97430016026419deaef246ad75430fcStephen Hines kStateDeferFlag_Draw = 0x1, 825baf6324a97430016026419deaef246ad75430fcStephen Hines kStateDeferFlag_Clip = 0x2 835baf6324a97430016026419deaef246ad75430fcStephen Hines}; 845baf6324a97430016026419deaef246ad75430fcStephen Hines 855baf6324a97430016026419deaef246ad75430fcStephen Hinesenum DrawOpMode { 865baf6324a97430016026419deaef246ad75430fcStephen Hines kDrawOpMode_Immediate, 875baf6324a97430016026419deaef246ad75430fcStephen Hines kDrawOpMode_Defer, 885baf6324a97430016026419deaef246ad75430fcStephen Hines kDrawOpMode_Flush 895baf6324a97430016026419deaef246ad75430fcStephen Hines}; 905baf6324a97430016026419deaef246ad75430fcStephen Hines 915baf6324a97430016026419deaef246ad75430fcStephen Hinesenum ClipSideFlags { 925baf6324a97430016026419deaef246ad75430fcStephen Hines kClipSide_None = 0x0, 935baf6324a97430016026419deaef246ad75430fcStephen Hines kClipSide_Left = 0x1, 945baf6324a97430016026419deaef246ad75430fcStephen Hines kClipSide_Top = 0x2, 955baf6324a97430016026419deaef246ad75430fcStephen Hines kClipSide_Right = 0x4, 965baf6324a97430016026419deaef246ad75430fcStephen Hines kClipSide_Bottom = 0x8, 975baf6324a97430016026419deaef246ad75430fcStephen Hines kClipSide_Full = 0xF, 985baf6324a97430016026419deaef246ad75430fcStephen Hines kClipSide_ConservativeFull = 0x1F 99593a894650e81be54173106ec266f0311cebebd3Stephen Hines}; 100593a894650e81be54173106ec266f0311cebebd3Stephen Hines 1015baf6324a97430016026419deaef246ad75430fcStephen Hines/////////////////////////////////////////////////////////////////////////////// 1025baf6324a97430016026419deaef246ad75430fcStephen Hines// Renderer 1035baf6324a97430016026419deaef246ad75430fcStephen Hines/////////////////////////////////////////////////////////////////////////////// 1045baf6324a97430016026419deaef246ad75430fcStephen Hines 1055baf6324a97430016026419deaef246ad75430fcStephen Hinesclass DeferredDisplayState; 1065baf6324a97430016026419deaef246ad75430fcStephen Hinesclass DisplayList; 107593a894650e81be54173106ec266f0311cebebd3Stephen Hinesclass TextSetupFunctor; 1085baf6324a97430016026419deaef246ad75430fcStephen Hinesclass VertexBuffer; 1095baf6324a97430016026419deaef246ad75430fcStephen Hines 1105baf6324a97430016026419deaef246ad75430fcStephen Hines/** 111593a894650e81be54173106ec266f0311cebebd3Stephen Hines * OpenGL renderer used to draw accelerated 2D graphics. The API is a 112 * simplified version of Skia's Canvas API. 113 */ 114class OpenGLRenderer { 115public: 116 ANDROID_API OpenGLRenderer(); 117 virtual ~OpenGLRenderer(); 118 119 /** 120 * Sets the name of this renderer. The name is optional and 121 * empty by default. If the pointer is null the name is set 122 * to the empty string. 123 */ 124 ANDROID_API void setName(const char* name); 125 126 /** 127 * Returns the name of this renderer as UTF8 string. 128 * The returned pointer is never null. 129 */ 130 ANDROID_API const char* getName() const; 131 132 /** 133 * Read externally defined properties to control the behavior 134 * of the renderer. 135 */ 136 ANDROID_API void initProperties(); 137 138 /** 139 * Indicates whether this renderer executes drawing commands immediately. 140 * If this method returns true, the drawing commands will be executed 141 * later. 142 */ 143 virtual bool isDeferred(); 144 145 /** 146 * Sets the dimension of the underlying drawing surface. This method must 147 * be called at least once every time the drawing surface changes size. 148 * 149 * @param width The width in pixels of the underlysing surface 150 * @param height The height in pixels of the underlysing surface 151 */ 152 virtual void setViewport(int width, int height); 153 154 /** 155 * Prepares the renderer to draw a frame. This method must be invoked 156 * at the beginning of each frame. When this method is invoked, the 157 * entire drawing surface is assumed to be redrawn. 158 * 159 * @param opaque If true, the target surface is considered opaque 160 * and will not be cleared. If false, the target surface 161 * will be cleared 162 */ 163 ANDROID_API status_t prepare(bool opaque); 164 165 /** 166 * Prepares the renderer to draw a frame. This method must be invoked 167 * at the beginning of each frame. Only the specified rectangle of the 168 * frame is assumed to be dirty. A clip will automatically be set to 169 * the specified rectangle. 170 * 171 * @param left The left coordinate of the dirty rectangle 172 * @param top The top coordinate of the dirty rectangle 173 * @param right The right coordinate of the dirty rectangle 174 * @param bottom The bottom coordinate of the dirty rectangle 175 * @param opaque If true, the target surface is considered opaque 176 * and will not be cleared. If false, the target surface 177 * will be cleared in the specified dirty rectangle 178 */ 179 virtual status_t prepareDirty(float left, float top, float right, float bottom, bool opaque); 180 181 /** 182 * Indicates the end of a frame. This method must be invoked whenever 183 * the caller is done rendering a frame. 184 */ 185 virtual void finish(); 186 187 /** 188 * This method must be invoked before handing control over to a draw functor. 189 * See callDrawGLFunction() for instance. 190 * 191 * This command must not be recorded inside display lists. 192 */ 193 virtual void interrupt(); 194 195 /** 196 * This method must be invoked after getting control back from a draw functor. 197 * 198 * This command must not be recorded inside display lists. 199 */ 200 virtual void resume(); 201 202 ANDROID_API void setCountOverdrawEnabled(bool enabled) { 203 mCountOverdraw = enabled; 204 } 205 206 ANDROID_API float getOverdraw() { 207 return mCountOverdraw ? mOverdraw : 0.0f; 208 } 209 210 ANDROID_API status_t invokeFunctors(Rect& dirty); 211 ANDROID_API void detachFunctor(Functor* functor); 212 ANDROID_API void attachFunctor(Functor* functor); 213 virtual status_t callDrawGLFunction(Functor* functor, Rect& dirty); 214 215 ANDROID_API void pushLayerUpdate(Layer* layer); 216 ANDROID_API void cancelLayerUpdate(Layer* layer); 217 ANDROID_API void clearLayerUpdates(); 218 ANDROID_API void flushLayerUpdates(); 219 220 ANDROID_API int getSaveCount() const; 221 virtual int save(int flags); 222 virtual void restore(); 223 virtual void restoreToCount(int saveCount); 224 225 ANDROID_API int saveLayer(float left, float top, float right, float bottom, 226 SkPaint* paint, int flags) { 227 SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode; 228 if (paint) mode = getXfermode(paint->getXfermode()); 229 return saveLayer(left, top, right, bottom, paint ? paint->getAlpha() : 255, mode, flags); 230 } 231 ANDROID_API int saveLayerAlpha(float left, float top, float right, float bottom, 232 int alpha, int flags) { 233 return saveLayer(left, top, right, bottom, alpha, SkXfermode::kSrcOver_Mode, flags); 234 } 235 virtual int saveLayer(float left, float top, float right, float bottom, 236 int alpha, SkXfermode::Mode mode, int flags); 237 238 int saveLayerDeferred(float left, float top, float right, float bottom, 239 int alpha, SkXfermode::Mode mode, int flags); 240 241 virtual void translate(float dx, float dy); 242 virtual void rotate(float degrees); 243 virtual void scale(float sx, float sy); 244 virtual void skew(float sx, float sy); 245 246 bool hasRectToRectTransform(); 247 ANDROID_API void getMatrix(SkMatrix* matrix); 248 virtual void setMatrix(SkMatrix* matrix); 249 virtual void concatMatrix(SkMatrix* matrix); 250 251 ANDROID_API const Rect& getClipBounds(); 252 253 /** 254 * Performs a quick reject but adjust the bounds to account for stroke width if necessary, 255 * and handling snapOut for AA geometry. 256 */ 257 bool quickRejectPreStroke(float left, float top, float right, float bottom, SkPaint* paint); 258 259 /** 260 * Returns false and sets scissor based upon bounds if drawing won't be clipped out 261 */ 262 bool quickReject(float left, float top, float right, float bottom, bool snapOut = false); 263 bool quickReject(const Rect& bounds) { 264 return quickReject(bounds.left, bounds.top, bounds.right, bounds.bottom); 265 } 266 267 /** 268 * Same as quickReject, without the scissor, instead returning clipRequired through pointer. 269 * clipRequired will be only set if not rejected 270 */ 271 ANDROID_API bool quickRejectNoScissor(float left, float top, float right, float bottom, 272 bool snapOut = false, bool* clipRequired = NULL); 273 bool quickRejectNoScissor(const Rect& bounds, bool* clipRequired = NULL) { 274 return quickRejectNoScissor(bounds.left, bounds.top, bounds.right, bounds.bottom, 275 clipRequired); 276 } 277 278 virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op); 279 virtual bool clipPath(SkPath* path, SkRegion::Op op); 280 virtual bool clipRegion(SkRegion* region, SkRegion::Op op); 281 virtual Rect* getClipRect(); 282 283 virtual status_t drawDisplayList(DisplayList* displayList, Rect& dirty, int32_t replayFlags); 284 virtual void outputDisplayList(DisplayList* displayList); 285 virtual status_t drawLayer(Layer* layer, float x, float y); 286 virtual status_t drawBitmap(SkBitmap* bitmap, float left, float top, SkPaint* paint); 287 status_t drawBitmaps(SkBitmap* bitmap, AssetAtlas::Entry* entry, int bitmapCount, 288 TextureVertex* vertices, bool pureTranslate, const Rect& bounds, SkPaint* paint); 289 virtual status_t drawBitmap(SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint); 290 virtual status_t drawBitmap(SkBitmap* bitmap, float srcLeft, float srcTop, 291 float srcRight, float srcBottom, float dstLeft, float dstTop, 292 float dstRight, float dstBottom, SkPaint* paint); 293 virtual status_t drawBitmapData(SkBitmap* bitmap, float left, float top, SkPaint* paint); 294 virtual status_t drawBitmapMesh(SkBitmap* bitmap, int meshWidth, int meshHeight, 295 float* vertices, int* colors, SkPaint* paint); 296 status_t drawPatches(SkBitmap* bitmap, AssetAtlas::Entry* entry, 297 TextureVertex* vertices, uint32_t indexCount, SkPaint* paint); 298 virtual status_t drawPatch(SkBitmap* bitmap, Res_png_9patch* patch, 299 float left, float top, float right, float bottom, SkPaint* paint); 300 status_t drawPatch(SkBitmap* bitmap, const Patch* mesh, AssetAtlas::Entry* entry, 301 float left, float top, float right, float bottom, SkPaint* paint); 302 virtual status_t drawColor(int color, SkXfermode::Mode mode); 303 virtual status_t drawRect(float left, float top, float right, float bottom, SkPaint* paint); 304 virtual status_t drawRoundRect(float left, float top, float right, float bottom, 305 float rx, float ry, SkPaint* paint); 306 virtual status_t drawCircle(float x, float y, float radius, SkPaint* paint); 307 virtual status_t drawOval(float left, float top, float right, float bottom, SkPaint* paint); 308 virtual status_t drawArc(float left, float top, float right, float bottom, 309 float startAngle, float sweepAngle, bool useCenter, SkPaint* paint); 310 virtual status_t drawPath(SkPath* path, SkPaint* paint); 311 virtual status_t drawLines(float* points, int count, SkPaint* paint); 312 virtual status_t drawPoints(float* points, int count, SkPaint* paint); 313 virtual status_t drawTextOnPath(const char* text, int bytesCount, int count, SkPath* path, 314 float hOffset, float vOffset, SkPaint* paint); 315 virtual status_t drawPosText(const char* text, int bytesCount, int count, 316 const float* positions, SkPaint* paint); 317 virtual status_t drawText(const char* text, int bytesCount, int count, float x, float y, 318 const float* positions, SkPaint* paint, float totalAdvance, const Rect& bounds, 319 DrawOpMode drawOpMode = kDrawOpMode_Immediate); 320 virtual status_t drawRects(const float* rects, int count, SkPaint* paint); 321 322 virtual void resetShader(); 323 virtual void setupShader(SkiaShader* shader); 324 325 virtual void resetColorFilter(); 326 virtual void setupColorFilter(SkiaColorFilter* filter); 327 328 virtual void resetShadow(); 329 virtual void setupShadow(float radius, float dx, float dy, int color); 330 331 virtual void resetPaintFilter(); 332 virtual void setupPaintFilter(int clearBits, int setBits); 333 334 // If this value is set to < 1.0, it overrides alpha set on layer (see drawBitmap, drawLayer) 335 void setOverrideLayerAlpha(float alpha) { mDrawModifiers.mOverrideLayerAlpha = alpha; } 336 337 SkPaint* filterPaint(SkPaint* paint); 338 339 /** 340 * Store the current display state (most importantly, the current clip and transform), and 341 * additionally map the state's bounds from local to window coordinates. 342 * 343 * Returns true if quick-rejected 344 */ 345 bool storeDisplayState(DeferredDisplayState& state, int stateDeferFlags); 346 void restoreDisplayState(const DeferredDisplayState& state, bool skipClipRestore = false); 347 void setupMergedMultiDraw(const Rect* clipRect); 348 349 const DrawModifiers& getDrawModifiers() { return mDrawModifiers; } 350 void setDrawModifiers(const DrawModifiers& drawModifiers) { mDrawModifiers = drawModifiers; } 351 352 ANDROID_API bool isCurrentTransformSimple() { 353 return mSnapshot->transform->isSimple(); 354 } 355 356 Caches& getCaches() { 357 return mCaches; 358 } 359 360 // simple rect clip 361 bool isCurrentClipSimple() { 362 return mSnapshot->clipRegion->isEmpty(); 363 } 364 365 int getViewportWidth() { return getSnapshot()->viewport.getWidth(); } 366 int getViewportHeight() { return getSnapshot()->viewport.getHeight(); } 367 368 /** 369 * Scales the alpha on the current snapshot. This alpha value will be modulated 370 * with other alpha values when drawing primitives. 371 */ 372 void scaleAlpha(float alpha) { 373 mSnapshot->alpha *= alpha; 374 } 375 376 /** 377 * Inserts a named event marker in the stream of GL commands. 378 */ 379 void eventMark(const char* name) const; 380 381 /** 382 * Inserts a named group marker in the stream of GL commands. This marker 383 * can be used by tools to group commands into logical groups. A call to 384 * this method must always be followed later on by a call to endMark(). 385 */ 386 void startMark(const char* name) const; 387 388 /** 389 * Closes the last group marker opened by startMark(). 390 */ 391 void endMark() const; 392 393 /** 394 * Gets the alpha and xfermode out of a paint object. If the paint is null 395 * alpha will be 255 and the xfermode will be SRC_OVER. This method does 396 * not multiply the paint's alpha by the current snapshot's alpha, and does 397 * not replace the alpha with the overrideLayerAlpha 398 * 399 * @param paint The paint to extract values from 400 * @param alpha Where to store the resulting alpha 401 * @param mode Where to store the resulting xfermode 402 */ 403 static inline void getAlphaAndModeDirect(SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 404 *mode = getXfermodeDirect(paint); 405 *alpha = getAlphaDirect(paint); 406 } 407 408 static inline SkXfermode::Mode getXfermodeDirect(SkPaint* paint) { 409 if (!paint) return SkXfermode::kSrcOver_Mode; 410 return getXfermode(paint->getXfermode()); 411 } 412 413 static inline int getAlphaDirect(const SkPaint* paint) { 414 if (!paint) return 255; 415 return paint->getAlpha(); 416 } 417 418 /** 419 * Return the best transform to use to rasterize text given a full 420 * transform matrix. 421 */ 422 mat4 findBestFontTransform(const mat4& transform) const; 423 424#if DEBUG_MERGE_BEHAVIOR 425 void drawScreenSpaceColorRect(float left, float top, float right, float bottom, int color) { 426 mCaches.setScissorEnabled(false); 427 428 // should only be called outside of other draw ops, so stencil can only be in test state 429 bool stencilWasEnabled = mCaches.stencil.isTestEnabled(); 430 mCaches.stencil.disable(); 431 432 drawColorRect(left, top, right, bottom, color, SkXfermode::kSrcOver_Mode, true); 433 434 if (stencilWasEnabled) mCaches.stencil.enableTest(); 435 } 436#endif 437 438protected: 439 /** 440 * Computes the projection matrix, initialize the first snapshot 441 * and stores the dimensions of the render target. 442 */ 443 void initViewport(int width, int height); 444 445 /** 446 * Perform the setup specific to a frame. This method does not 447 * issue any OpenGL commands. 448 */ 449 void setupFrameState(float left, float top, float right, float bottom, bool opaque); 450 451 /** 452 * Indicates the start of rendering. This method will setup the 453 * initial OpenGL state (viewport, clearing the buffer, etc.) 454 */ 455 status_t startFrame(); 456 457 /** 458 * Clears the underlying surface if needed. 459 */ 460 virtual status_t clear(float left, float top, float right, float bottom, bool opaque); 461 462 /** 463 * Call this method after updating a layer during a drawing pass. 464 */ 465 void resumeAfterLayer(); 466 467 /** 468 * This method is called whenever a stencil buffer is required. Subclasses 469 * should override this method and call attachStencilBufferToLayer() on the 470 * appropriate layer(s). 471 */ 472 virtual void ensureStencilBuffer(); 473 474 /** 475 * Obtains a stencil render buffer (allocating it if necessary) and 476 * attaches it to the specified layer. 477 */ 478 void attachStencilBufferToLayer(Layer* layer); 479 480 /** 481 * Compose the layer defined in the current snapshot with the layer 482 * defined by the previous snapshot. 483 * 484 * The current snapshot *must* be a layer (flag kFlagIsLayer set.) 485 * 486 * @param curent The current snapshot containing the layer to compose 487 * @param previous The previous snapshot to compose the current layer with 488 */ 489 virtual void composeLayer(sp<Snapshot> current, sp<Snapshot> previous); 490 491 /** 492 * Marks the specified region as dirty at the specified bounds. 493 */ 494 void dirtyLayerUnchecked(Rect& bounds, Region* region); 495 496 /** 497 * Returns the current snapshot. 498 */ 499 sp<Snapshot> getSnapshot() const { 500 return mSnapshot; 501 } 502 503 /** 504 * Returns the region of the current layer. 505 */ 506 virtual Region* getRegion() const { 507 return mSnapshot->region; 508 } 509 510 /** 511 * Indicates whether rendering is currently targeted at a layer. 512 */ 513 virtual bool hasLayer() const { 514 return (mSnapshot->flags & Snapshot::kFlagFboTarget) && mSnapshot->region; 515 } 516 517 /** 518 * Returns the name of the FBO this renderer is rendering into. 519 */ 520 virtual GLint getTargetFbo() const { 521 return 0; 522 } 523 524 /** 525 * Renders the specified layer as a textured quad. 526 * 527 * @param layer The layer to render 528 * @param rect The bounds of the layer 529 */ 530 void drawTextureLayer(Layer* layer, const Rect& rect); 531 532 /** 533 * Gets the alpha and xfermode out of a paint object. If the paint is null 534 * alpha will be 255 and the xfermode will be SRC_OVER. Accounts for both 535 * snapshot alpha, and overrideLayerAlpha 536 * 537 * @param paint The paint to extract values from 538 * @param alpha Where to store the resulting alpha 539 * @param mode Where to store the resulting xfermode 540 */ 541 inline void getAlphaAndMode(SkPaint* paint, int* alpha, SkXfermode::Mode* mode) const; 542 543 /** 544 * Gets the alpha from a layer, accounting for snapshot alpha and overrideLayerAlpha 545 * 546 * @param layer The layer from which the alpha is extracted 547 */ 548 inline float getLayerAlpha(Layer* layer) const; 549 550 /** 551 * Safely retrieves the mode from the specified xfermode. If the specified 552 * xfermode is null, the mode is assumed to be SkXfermode::kSrcOver_Mode. 553 */ 554 static inline SkXfermode::Mode getXfermode(SkXfermode* mode) { 555 SkXfermode::Mode resultMode; 556 if (!SkXfermode::AsMode(mode, &resultMode)) { 557 resultMode = SkXfermode::kSrcOver_Mode; 558 } 559 return resultMode; 560 } 561 562 /** 563 * Set to true to suppress error checks at the end of a frame. 564 */ 565 virtual bool suppressErrorChecks() const { 566 return false; 567 } 568 569private: 570 /** 571 * Discards the content of the framebuffer if supported by the driver. 572 * This method should be called at the beginning of a frame to optimize 573 * rendering on some tiler architectures. 574 */ 575 void discardFramebuffer(float left, float top, float right, float bottom); 576 577 /** 578 * Ensures the state of the renderer is the same as the state of 579 * the GL context. 580 */ 581 void syncState(); 582 583 /** 584 * Tells the GPU what part of the screen is about to be redrawn. 585 * This method will use the clip rect that we started drawing the 586 * frame with. 587 * This method needs to be invoked every time getTargetFbo() is 588 * bound again. 589 */ 590 void startTiling(const sp<Snapshot>& snapshot, bool opaque = false); 591 592 /** 593 * Tells the GPU what part of the screen is about to be redrawn. 594 * This method needs to be invoked every time getTargetFbo() is 595 * bound again. 596 */ 597 void startTiling(const Rect& clip, int windowHeight, bool opaque = false); 598 599 /** 600 * Tells the GPU that we are done drawing the frame or that we 601 * are switching to another render target. 602 */ 603 void endTiling(); 604 605 /** 606 * Saves the current state of the renderer as a new snapshot. 607 * The new snapshot is saved in mSnapshot and the previous snapshot 608 * is linked from mSnapshot->previous. 609 * 610 * @param flags The save flags; see SkCanvas for more information 611 * 612 * @return The new save count. This value can be passed to #restoreToCount() 613 */ 614 int saveSnapshot(int flags); 615 616 /** 617 * Restores the current snapshot; mSnapshot becomes mSnapshot->previous. 618 * 619 * @return True if the clip was modified. 620 */ 621 bool restoreSnapshot(); 622 623 /** 624 * Sets the clipping rectangle using glScissor. The clip is defined by 625 * the current snapshot's clipRect member. 626 */ 627 void setScissorFromClip(); 628 629 /** 630 * Sets the clipping region using the stencil buffer. The clip region 631 * is defined by the current snapshot's clipRegion member. 632 */ 633 void setStencilFromClip(); 634 635 /** 636 * Given the local bounds of the layer, calculates ... 637 */ 638 void calculateLayerBoundsAndClip(Rect& bounds, Rect& clip, bool fboLayer); 639 640 /** 641 * Given the local bounds + clip of the layer, updates current snapshot's empty/invisible 642 */ 643 void updateSnapshotIgnoreForLayer(const Rect& bounds, const Rect& clip, 644 bool fboLayer, int alpha); 645 646 /** 647 * Creates a new layer stored in the specified snapshot. 648 * 649 * @param snapshot The snapshot associated with the new layer 650 * @param left The left coordinate of the layer 651 * @param top The top coordinate of the layer 652 * @param right The right coordinate of the layer 653 * @param bottom The bottom coordinate of the layer 654 * @param alpha The translucency of the layer 655 * @param mode The blending mode of the layer 656 * @param flags The layer save flags 657 * 658 * @return True if the layer was successfully created, false otherwise 659 */ 660 bool createLayer(float left, float top, float right, float bottom, 661 int alpha, SkXfermode::Mode mode, int flags); 662 663 /** 664 * Creates a new layer stored in the specified snapshot as an FBO. 665 * 666 * @param layer The layer to store as an FBO 667 * @param snapshot The snapshot associated with the new layer 668 * @param bounds The bounds of the layer 669 */ 670 bool createFboLayer(Layer* layer, Rect& bounds, Rect& clip); 671 672 /** 673 * Compose the specified layer as a region. 674 * 675 * @param layer The layer to compose 676 * @param rect The layer's bounds 677 */ 678 void composeLayerRegion(Layer* layer, const Rect& rect); 679 680 /** 681 * Compose the specified layer as a simple rectangle. 682 * 683 * @param layer The layer to compose 684 * @param rect The layer's bounds 685 * @param swap If true, the source and destination are swapped 686 */ 687 void composeLayerRect(Layer* layer, const Rect& rect, bool swap = false); 688 689 /** 690 * Clears all the regions corresponding to the current list of layers. 691 * This method MUST be invoked before any drawing operation. 692 */ 693 void clearLayerRegions(); 694 695 /** 696 * Mark the layer as dirty at the specified coordinates. The coordinates 697 * are transformed with the supplied matrix. 698 */ 699 void dirtyLayer(const float left, const float top, 700 const float right, const float bottom, const mat4 transform); 701 702 /** 703 * Mark the layer as dirty at the specified coordinates. 704 */ 705 void dirtyLayer(const float left, const float top, 706 const float right, const float bottom); 707 708 /** 709 * Draws a colored rectangle with the specified color. The specified coordinates 710 * are transformed by the current snapshot's transform matrix unless specified 711 * otherwise. 712 * 713 * @param left The left coordinate of the rectangle 714 * @param top The top coordinate of the rectangle 715 * @param right The right coordinate of the rectangle 716 * @param bottom The bottom coordinate of the rectangle 717 * @param color The rectangle's ARGB color, defined as a packed 32 bits word 718 * @param mode The Skia xfermode to use 719 * @param ignoreTransform True if the current transform should be ignored 720 */ 721 void drawColorRect(float left, float top, float right, float bottom, 722 int color, SkXfermode::Mode mode, bool ignoreTransform = false); 723 724 /** 725 * Draws a series of colored rectangles with the specified color. The specified 726 * coordinates are transformed by the current snapshot's transform matrix unless 727 * specified otherwise. 728 * 729 * @param rects A list of rectangles, 4 floats (left, top, right, bottom) 730 * per rectangle 731 * @param color The rectangles' ARGB color, defined as a packed 32 bits word 732 * @param mode The Skia xfermode to use 733 * @param ignoreTransform True if the current transform should be ignored 734 * @param dirty True if calling this method should dirty the current layer 735 * @param clip True if the rects should be clipped, false otherwise 736 */ 737 status_t drawColorRects(const float* rects, int count, int color, 738 SkXfermode::Mode mode, bool ignoreTransform = false, 739 bool dirty = true, bool clip = true); 740 741 /** 742 * Draws the shape represented by the specified path texture. 743 * This method invokes drawPathTexture() but takes into account 744 * the extra left/top offset and the texture offset to correctly 745 * position the final shape. 746 * 747 * @param left The left coordinate of the shape to render 748 * @param top The top coordinate of the shape to render 749 * @param texture The texture reprsenting the shape 750 * @param paint The paint to draw the shape with 751 */ 752 status_t drawShape(float left, float top, const PathTexture* texture, SkPaint* paint); 753 754 /** 755 * Draws the specified texture as an alpha bitmap. Alpha bitmaps obey 756 * different compositing rules. 757 * 758 * @param texture The texture to draw with 759 * @param left The x coordinate of the bitmap 760 * @param top The y coordinate of the bitmap 761 * @param paint The paint to render with 762 */ 763 void drawAlphaBitmap(Texture* texture, float left, float top, SkPaint* paint); 764 765 /** 766 * Renders a strip of polygons with the specified paint, used for tessellated geometry. 767 * 768 * @param vertexBuffer The VertexBuffer to be drawn 769 * @param paint The paint to render with 770 * @param useOffset Offset the vertexBuffer (used in drawing non-AA lines) 771 */ 772 status_t drawVertexBuffer(const VertexBuffer& vertexBuffer, SkPaint* paint, 773 bool useOffset = false); 774 775 /** 776 * Renders the convex hull defined by the specified path as a strip of polygons. 777 * 778 * @param path The hull of the path to draw 779 * @param paint The paint to render with 780 */ 781 status_t drawConvexPath(const SkPath& path, SkPaint* paint); 782 783 /** 784 * Draws a textured rectangle with the specified texture. The specified coordinates 785 * are transformed by the current snapshot's transform matrix. 786 * 787 * @param left The left coordinate of the rectangle 788 * @param top The top coordinate of the rectangle 789 * @param right The right coordinate of the rectangle 790 * @param bottom The bottom coordinate of the rectangle 791 * @param texture The texture name to map onto the rectangle 792 * @param alpha An additional translucency parameter, between 0.0f and 1.0f 793 * @param mode The blending mode 794 * @param blend True if the texture contains an alpha channel 795 */ 796 void drawTextureRect(float left, float top, float right, float bottom, GLuint texture, 797 float alpha, SkXfermode::Mode mode, bool blend); 798 799 /** 800 * Draws a textured rectangle with the specified texture. The specified coordinates 801 * are transformed by the current snapshot's transform matrix. 802 * 803 * @param left The left coordinate of the rectangle 804 * @param top The top coordinate of the rectangle 805 * @param right The right coordinate of the rectangle 806 * @param bottom The bottom coordinate of the rectangle 807 * @param texture The texture to use 808 * @param paint The paint containing the alpha, blending mode, etc. 809 */ 810 void drawTextureRect(float left, float top, float right, float bottom, 811 Texture* texture, SkPaint* paint); 812 813 /** 814 * Draws a textured mesh with the specified texture. If the indices are omitted, 815 * the mesh is drawn as a simple quad. The mesh pointers become offsets when a 816 * VBO is bound. 817 * 818 * @param left The left coordinate of the rectangle 819 * @param top The top coordinate of the rectangle 820 * @param right The right coordinate of the rectangle 821 * @param bottom The bottom coordinate of the rectangle 822 * @param texture The texture name to map onto the rectangle 823 * @param alpha An additional translucency parameter, between 0.0f and 1.0f 824 * @param mode The blending mode 825 * @param blend True if the texture contains an alpha channel 826 * @param vertices The vertices that define the mesh 827 * @param texCoords The texture coordinates of each vertex 828 * @param elementsCount The number of elements in the mesh, required by indices 829 * @param swapSrcDst Whether or not the src and dst blending operations should be swapped 830 * @param ignoreTransform True if the current transform should be ignored 831 * @param vbo The VBO used to draw the mesh 832 * @param ignoreScale True if the model view matrix should not be scaled 833 * @param dirty True if calling this method should dirty the current layer 834 */ 835 void drawTextureMesh(float left, float top, float right, float bottom, GLuint texture, 836 float alpha, SkXfermode::Mode mode, bool blend, 837 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 838 bool swapSrcDst = false, bool ignoreTransform = false, GLuint vbo = 0, 839 bool ignoreScale = false, bool dirty = true); 840 841 void drawIndexedTextureMesh(float left, float top, float right, float bottom, GLuint texture, 842 float alpha, SkXfermode::Mode mode, bool blend, 843 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 844 bool swapSrcDst = false, bool ignoreTransform = false, GLuint vbo = 0, 845 bool ignoreScale = false, bool dirty = true); 846 847 void drawAlpha8TextureMesh(float left, float top, float right, float bottom, 848 GLuint texture, bool hasColor, int color, int alpha, SkXfermode::Mode mode, 849 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 850 bool ignoreTransform, bool ignoreScale = false, bool dirty = true); 851 852 /** 853 * Draws the specified list of vertices as quads using indexed GL_TRIANGLES. 854 * If the number of vertices to draw exceeds the number of indices we have 855 * pre-allocated, this method will generate several glDrawElements() calls. 856 */ 857 void drawIndexedQuads(Vertex* mesh, GLsizei quadsCount); 858 859 /** 860 * Draws text underline and strike-through if needed. 861 * 862 * @param text The text to decor 863 * @param bytesCount The number of bytes in the text 864 * @param totalAdvance The total advance in pixels, defines underline/strikethrough length 865 * @param x The x coordinate where the text will be drawn 866 * @param y The y coordinate where the text will be drawn 867 * @param paint The paint to draw the text with 868 */ 869 void drawTextDecorations(float totalAdvance, float x, float y, SkPaint* paint); 870 871 /** 872 * Draws shadow layer on text (with optional positions). 873 * 874 * @param paint The paint to draw the shadow with 875 * @param text The text to draw 876 * @param bytesCount The number of bytes in the text 877 * @param count The number of glyphs in the text 878 * @param positions The x, y positions of individual glyphs (or NULL) 879 * @param fontRenderer The font renderer object 880 * @param alpha The alpha value for drawing the shadow 881 * @param mode The xfermode for drawing the shadow 882 * @param x The x coordinate where the shadow will be drawn 883 * @param y The y coordinate where the shadow will be drawn 884 */ 885 void drawTextShadow(SkPaint* paint, const char* text, int bytesCount, int count, 886 const float* positions, FontRenderer& fontRenderer, int alpha, SkXfermode::Mode mode, 887 float x, float y); 888 889 /** 890 * Draws a path texture. Path textures are alpha8 bitmaps that need special 891 * compositing to apply colors/filters/etc. 892 * 893 * @param texture The texture to render 894 * @param x The x coordinate where the texture will be drawn 895 * @param y The y coordinate where the texture will be drawn 896 * @param paint The paint to draw the texture with 897 */ 898 void drawPathTexture(const PathTexture* texture, float x, float y, SkPaint* paint); 899 900 /** 901 * Resets the texture coordinates stored in mMeshVertices. Setting the values 902 * back to default is achieved by calling: 903 * 904 * resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 905 * 906 * @param u1 The left coordinate of the texture 907 * @param v1 The bottom coordinate of the texture 908 * @param u2 The right coordinate of the texture 909 * @param v2 The top coordinate of the texture 910 */ 911 void resetDrawTextureTexCoords(float u1, float v1, float u2, float v2); 912 913 /** 914 * Returns true if the specified paint will draw invisible text. 915 */ 916 bool canSkipText(const SkPaint* paint) const; 917 918 /** 919 * Binds the specified texture. The texture unit must have been selected 920 * prior to calling this method. 921 */ 922 inline void bindTexture(GLuint texture) { 923 mCaches.bindTexture(texture); 924 } 925 926 /** 927 * Binds the specified EGLImage texture. The texture unit must have been selected 928 * prior to calling this method. 929 */ 930 inline void bindExternalTexture(GLuint texture) { 931 mCaches.bindTexture(GL_TEXTURE_EXTERNAL_OES, texture); 932 } 933 934 /** 935 * Enable or disable blending as necessary. This function sets the appropriate 936 * blend function based on the specified xfermode. 937 */ 938 inline void chooseBlending(bool blend, SkXfermode::Mode mode, ProgramDescription& description, 939 bool swapSrcDst = false); 940 941 /** 942 * Use the specified program with the current GL context. If the program is already 943 * in use, it will not be bound again. If it is not in use, the current program is 944 * marked unused and the specified program becomes used and becomes the new 945 * current program. 946 * 947 * @param program The program to use 948 * 949 * @return true If the specified program was already in use, false otherwise. 950 */ 951 inline bool useProgram(Program* program); 952 953 /** 954 * Invoked before any drawing operation. This sets required state. 955 */ 956 void setupDraw(bool clear = true); 957 958 /** 959 * Various methods to setup OpenGL rendering. 960 */ 961 void setupDrawWithTexture(bool isAlpha8 = false); 962 void setupDrawWithTextureAndColor(bool isAlpha8 = false); 963 void setupDrawWithExternalTexture(); 964 void setupDrawNoTexture(); 965 void setupDrawAA(); 966 void setupDrawColor(int color, int alpha); 967 void setupDrawColor(float r, float g, float b, float a); 968 void setupDrawAlpha8Color(int color, int alpha); 969 void setupDrawTextGamma(const SkPaint* paint); 970 void setupDrawShader(); 971 void setupDrawColorFilter(); 972 void setupDrawBlending(SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode, 973 bool swapSrcDst = false); 974 void setupDrawBlending(bool blend = true, SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode, 975 bool swapSrcDst = false); 976 void setupDrawProgram(); 977 void setupDrawDirtyRegionsDisabled(); 978 void setupDrawModelViewIdentity(bool offset = false); 979 void setupDrawModelView(float left, float top, float right, float bottom, 980 bool ignoreTransform = false, bool ignoreModelView = false); 981 void setupDrawModelViewTranslate(float left, float top, float right, float bottom, 982 bool ignoreTransform = false); 983 void setupDrawColorUniforms(); 984 void setupDrawPureColorUniforms(); 985 void setupDrawShaderIdentityUniforms(); 986 void setupDrawShaderUniforms(bool ignoreTransform = false); 987 void setupDrawColorFilterUniforms(); 988 void setupDrawSimpleMesh(); 989 void setupDrawTexture(GLuint texture); 990 void setupDrawExternalTexture(GLuint texture); 991 void setupDrawTextureTransform(); 992 void setupDrawTextureTransformUniforms(mat4& transform); 993 void setupDrawTextGammaUniforms(); 994 void setupDrawMesh(GLvoid* vertices, GLvoid* texCoords = NULL, GLuint vbo = 0); 995 void setupDrawMesh(GLvoid* vertices, GLvoid* texCoords, GLvoid* colors); 996 void setupDrawMeshIndices(GLvoid* vertices, GLvoid* texCoords, GLuint vbo = 0); 997 void setupDrawIndexedVertices(GLvoid* vertices); 998 void accountForClear(SkXfermode::Mode mode); 999 1000 bool updateLayer(Layer* layer, bool inFrame); 1001 void updateLayers(); 1002 void flushLayers(); 1003 1004#if DEBUG_LAYERS_AS_REGIONS 1005 /** 1006 * Renders the specified region as a series of rectangles. This method 1007 * is used for debugging only. 1008 */ 1009 void drawRegionRectsDebug(const Region& region); 1010#endif 1011 1012 /** 1013 * Renders the specified region as a series of rectangles. The region 1014 * must be in screen-space coordinates. 1015 */ 1016 void drawRegionRects(const SkRegion& region, int color, SkXfermode::Mode mode, 1017 bool dirty = false); 1018 1019 /** 1020 * Draws the current clip region if any. Only when DEBUG_CLIP_REGIONS 1021 * is turned on. 1022 */ 1023 void debugClip(); 1024 1025 void debugOverdraw(bool enable, bool clear); 1026 void renderOverdraw(); 1027 void countOverdraw(); 1028 1029 /** 1030 * Should be invoked every time the glScissor is modified. 1031 */ 1032 inline void dirtyClip() { 1033 mDirtyClip = true; 1034 } 1035 1036 inline mat4& currentTransform() const { 1037 return *mSnapshot->transform; 1038 } 1039 1040 inline const UvMapper& getMapper(const Texture* texture) { 1041 return texture && texture->uvMapper ? *texture->uvMapper : mUvMapper; 1042 } 1043 1044 /** 1045 * Returns a texture object for the specified bitmap. The texture can 1046 * come from the texture cache or an atlas. If this method returns 1047 * NULL, the texture could not be found and/or allocated. 1048 */ 1049 Texture* getTexture(SkBitmap* bitmap); 1050 1051 // Dimensions of the drawing surface 1052 int mWidth, mHeight; 1053 1054 // Matrix used for ortho projection in shaders 1055 mat4 mOrthoMatrix; 1056 1057 // Model-view matrix used to position/size objects 1058 mat4 mModelView; 1059 1060 // Number of saved states 1061 int mSaveCount; 1062 // Base state 1063 sp<Snapshot> mFirstSnapshot; 1064 // Current state 1065 sp<Snapshot> mSnapshot; 1066 // State used to define the clipping region 1067 Rect mTilingClip; 1068 // Is the target render surface opaque 1069 bool mOpaque; 1070 // Is a frame currently being rendered 1071 bool mFrameStarted; 1072 1073 // Used to draw textured quads 1074 TextureVertex mMeshVertices[4]; 1075 1076 // Default UV mapper 1077 const UvMapper mUvMapper; 1078 1079 // shader, filters, and shadow 1080 DrawModifiers mDrawModifiers; 1081 SkPaint mFilteredPaint; 1082 1083 // Various caches 1084 Caches& mCaches; 1085 Extensions& mExtensions; 1086 1087 // List of rectangles to clear after saveLayer() is invoked 1088 Vector<Rect*> mLayers; 1089 // List of functors to invoke after a frame is drawn 1090 SortedVector<Functor*> mFunctors; 1091 // List of layers to update at the beginning of a frame 1092 Vector<Layer*> mLayerUpdates; 1093 1094 // Indicates whether the clip must be restored 1095 bool mDirtyClip; 1096 1097 // The following fields are used to setup drawing 1098 // Used to describe the shaders to generate 1099 ProgramDescription mDescription; 1100 // Color description 1101 bool mColorSet; 1102 float mColorA, mColorR, mColorG, mColorB; 1103 // Indicates that the shader should get a color 1104 bool mSetShaderColor; 1105 // Current texture unit 1106 GLuint mTextureUnit; 1107 // Track dirty regions, true by default 1108 bool mTrackDirtyRegions; 1109 // Indicate whether we are drawing an opaque frame 1110 bool mOpaqueFrame; 1111 1112 // See PROPERTY_DISABLE_SCISSOR_OPTIMIZATION in 1113 // Properties.h 1114 bool mScissorOptimizationDisabled; 1115 1116 // No-ops start/endTiling when set 1117 bool mSuppressTiling; 1118 1119 // If true, this renderer will setup drawing to emulate 1120 // an increment stencil buffer in the color buffer 1121 bool mCountOverdraw; 1122 float mOverdraw; 1123 1124 // Optional name of the renderer 1125 String8 mName; 1126 1127 friend class DisplayListRenderer; 1128 friend class Layer; 1129 friend class TextSetupFunctor; 1130 friend class DrawBitmapOp; 1131 friend class DrawPatchOp; 1132 1133}; // class OpenGLRenderer 1134 1135}; // namespace uirenderer 1136}; // namespace android 1137 1138#endif // ANDROID_HWUI_OPENGL_RENDERER_H 1139