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commit-bot@chromium.org d3e5842db0 Avoid re-rendering stencil clip for every draw with reducable clip stack 
Fixes the cases where clip stack reduction would cause clip to be
re-rendered to stencil for each draw call. This causes unneeded
slowdown.

Stencil cache would not be used because the clip stack generation id communicated
by the clip stack element list would be invalid. This happended due to

 a) clip stack reduction creating new elements in the element list.

 b) purging logic removing the generation id, but reduction logic
    selecting already purged element, and thus the generation id, as
    the representative state of the clip.

Cases of a) where reduction would flatten the stack to a single new
element were fixed by assigning the generation id of the top-most
element of the clip stack as the generation id of the new
element. This is not strictly minimal, but enables more caching than
using invalid id.

Cases of a) where reduction would substitute a stack element with a
new element the generation id of the substituted element is used.

The b) part was fixed by removing the purging logic. It was not
exactly correct, as the previously purged states were actually
used. The purging was not used for anything.

Changes SkClipStack API to highlight that invalid generation id is
never returned by SkClipStack. Empty stacks are wide open. Changes the
clients to reflect this.

Fixes a crash when not passing anti-alias out parameter to
GrReducedClip::ReduceClipStack. The crash is not exercised in the
current code.

Committed: http://code.google.com/p/skia/source/detail?r=12084

R=bsalomon@google.com, robertphillips@google.com

Author: kkinnunen@nvidia.com

Review URL: https://codereview.chromium.org/48593003

git-svn-id: http://skia.googlecode.com/svn/trunk@12127 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-11-05 15:03:08 +00:00
..
TestXCode/Tests.xcodeproj migrate more legacy unittests into tests/ 2009-03-07 03:39:23 +00:00
AAClipTest.cpp Add an even more convenient way to declare tests, with example. 2013-09-19 20:56:46 +00:00
AndroidPaintTest.cpp We don't flatten or unflatten SkPaintOptionsAndroid. Reproduce and fix. 2013-09-26 15:16:12 +00:00
AnnotationTest.cpp PDF: add support for named destinations. 2013-03-08 09:09:10 +00:00
ARGBImageEncoderTest.cpp store SkAlphaType inside SkBitmap, on road to support unpremul 2013-10-21 14:00:07 +00:00
AtomicTest.cpp Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
BitmapCopyTest.cpp Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
BitmapFactoryTest.cpp "Fix" persistent failure of BitmapFactoryTest on debug RazrI 2013-03-21 20:54:42 +00:00
BitmapGetColorTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
BitmapHasherTest.cpp store SkAlphaType inside SkBitmap, on road to support unpremul 2013-10-21 14:00:07 +00:00
BitmapHeapTest.cpp In SkBitmapHeap, defer adding owners for new bitmaps. 2012-11-16 20:34:37 +00:00
BitSetTest.cpp Automatic update of all copyright notices to reflect new license terms. 2011-07-28 14:26:00 +00:00
BlitRowTest.cpp More clang warning fixes. 2013-10-21 16:41:00 +00:00
BlurTest.cpp Fix leak in BlurTest 2013-10-11 14:38:46 +00:00
CachedDecodingPixelRefTest.cpp move SkImage::ColorType into SkColorType 2013-11-01 13:46:54 +00:00
CanvasStateTest.cpp fix printing of error messages in canvasstatetest. 2013-09-18 20:15:12 +00:00
CanvasTest.cpp More clang warning fixes. 2013-10-21 16:41:00 +00:00
ChecksumTest.cpp Add SkChecksum::Murmur3. 2013-07-23 20:25:34 +00:00
ClampRangeTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
ClipCacheTest.cpp Avoid re-rendering stencil clip for every draw with reducable clip stack 2013-11-05 15:03:08 +00:00
ClipCubicTest.cpp Clean up SkTypes.h. 2013-10-11 18:50:45 +00:00
ClipperTest.cpp Tests : Unused parameters cleanup 2013-02-27 19:17:41 +00:00
ClipStackTest.cpp Avoid re-rendering stencil clip for every draw with reducable clip stack 2013-11-05 15:03:08 +00:00
ColorFilterTest.cpp force readbuffer clients to use specialized readFoo for flattenables 2013-10-16 13:05:06 +00:00
ColorTest.cpp More clang warning fixes. 2013-10-21 16:41:00 +00:00
DataRefTest.cpp Remove SkDataTable from SkFlattenable hierarchy. 2013-10-15 20:39:57 +00:00
DeferredCanvasTest.cpp move SkImage::ColorType into SkColorType 2013-11-01 13:46:54 +00:00
DequeTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
DeviceLooperTest.cpp Fix Mac 10.6 DeviceLooperTest build error (this time with feeling) 2013-09-18 12:51:50 +00:00
DocumentTest.cpp Fix a test warning on some linux machines 2013-10-22 18:33:21 +00:00
DrawBitmapRectTest.cpp move SkImage::ColorType into SkColorType 2013-11-01 13:46:54 +00:00
DrawPathTest.cpp promote SkImage::AlphaType to SkAlphaType 2013-09-20 19:33:52 +00:00
DrawTextTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
DynamicHashTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
EmptyPathTest.cpp Refactor: clean up some unused or mostly-unused API I saw here. 2013-06-18 20:50:34 +00:00
ErrorTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-09-20 07:01:33 +00:00
FillPathTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
FitsInTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
FlatDataTest.cpp use SkTDynamicHash in picture recording 2013-08-20 16:48:47 +00:00
FlateTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
FontHostStreamTest.cpp Check whether font creation is failed to avoid segment fault. 2013-05-07 14:32:58 +00:00
FontHostTest.cpp onCharsToGlyphs to handle non-bmp on Mac. 2013-10-25 17:49:08 +00:00
FontMgrTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-09-20 07:01:33 +00:00
FontNamesTest.cpp Clean up SkTypes.h. 2013-10-11 18:50:45 +00:00
FrontBufferedStreamTest.cpp Add a buffered SkStream class. 2013-09-26 21:35:39 +00:00
GeometryTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
GifTest.cpp GIF decode: optional error messages and fault tolerance. 2013-10-11 18:21:56 +00:00
GLInterfaceValidation.cpp Simplify the GL interface validation test. 2013-03-11 20:22:38 +00:00
GLProgramsTest.cpp Implement SkColorFilter as a GrGLEffect 2013-10-23 05:42:03 +00:00
GpuBitmapCopyTest.cpp Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
GpuColorFilterTest.cpp Implement SkColorFilter as a GrGLEffect 2013-10-23 05:42:03 +00:00
GpuDrawPathTest.cpp Temporarily disable GpuTestPath. 2013-08-05 14:50:31 +00:00
GradientTest.cpp Split SkDevice into SkBaseDevice and SkBitmapDevice 2013-08-29 11:54:56 +00:00
GrContextFactoryTest.cpp Add --threads to tests binary, to run non-GPU tests on multiple cores. 2013-04-19 13:24:28 +00:00
GrMemoryPoolTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
GrSurfaceTest.cpp Reland of 8525 with fix for case when GrRT outlives GrTexture. 2013-04-09 15:04:12 +00:00
HashCacheTest.cpp Clean up the GrTHashTable API. 2013-10-27 20:50:23 +00:00
ImageCacheTest.cpp SkTDynamicHash 2013-08-12 14:51:25 +00:00
ImageDecodingTest.cpp Implement charToGlyph on remaining ports. 2013-10-24 21:39:35 +00:00
ImageFilterTest.cpp Remove support for SK_CROP_RECT_IS_INT, now that it is no longer used in Blink or Chrome. 2013-10-16 15:46:00 +00:00
InfRectTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
JpegTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
LayerDrawLooperTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
LListTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
MathTest.cpp Clean up SkTypes.h. 2013-10-11 18:50:45 +00:00
Matrix44Test.cpp Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
MatrixTest.cpp Revert "Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream." 2013-11-04 21:35:55 +00:00
MD5Test.cpp Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-31 20:28:24 +00:00
MemoryTest.cpp Add sk_calloc. Remove SkMemory_stdlib, which seems unused. 2013-09-20 14:31:45 +00:00
MemsetTest.cpp combine glyph and image bulk alloc, and adjust initial alloc size, to reduce total waste from 50% to 30% 2013-06-19 19:25:36 +00:00
MessageBusTest.cpp We want to give SkPixelRef a way to signal over to GrResourceCache that it's become pointless to keep around textures based on that SkPixelRef when its pixels change, so that it can be a good citizen and free those textures. 2013-10-24 17:44:27 +00:00
MetaDataTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
MipMapTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
OnceTest.cpp SK_ONCE for SkData and SkPathRef 2013-10-23 14:44:08 +00:00
OSPathTest.cpp Fix bug in setting directories for tests. 2013-06-06 14:59:56 +00:00
PackBitsTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
PaintTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
ParsePathTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
PathCoverageTest.cpp Tests : Unused parameters cleanup 2013-02-27 19:17:41 +00:00
PathMeasureTest.cpp Tests : Unused parameters cleanup 2013-02-27 19:17:41 +00:00
PathOpsAngleTest.cpp More clang warning fixes. 2013-10-21 16:41:00 +00:00
PathOpsBoundsTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsCubicIntersectionTest.cpp pathops work in progress 2013-11-01 17:36:03 +00:00
PathOpsCubicIntersectionTestData.cpp path ops work in progress 2013-10-02 14:49:34 +00:00
PathOpsCubicIntersectionTestData.h Make parallel unit testing work on windows 2013-04-10 15:55:37 +00:00
PathOpsCubicLineIntersectionTest.cpp pathops work in progress 2013-11-01 17:36:03 +00:00
PathOpsCubicQuadIntersectionTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathOpsCubicReduceOrderTest.cpp path ops work in progress 2013-10-02 14:49:34 +00:00
PathOpsCubicToQuadsTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsDCubicTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsDLineTest.cpp turn off debugging printfs 2013-07-23 15:27:41 +00:00
PathOpsDPointTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsDQuadTest.cpp pathops work in progress 2013-11-01 17:36:03 +00:00
PathOpsDRectTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsDTriangleTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathOpsDVectorTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsExtendedTest.cpp pathops work in progress 2013-11-01 17:36:03 +00:00
PathOpsExtendedTest.h harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsInverseTest.cpp path ops : add support for inverse fill 2013-04-22 14:37:05 +00:00
PathOpsLineIntersectionTest.cpp path ops work in progress 2013-10-02 14:49:34 +00:00
PathOpsLineParametetersTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsOpCubicThreadedTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsOpRectThreadedTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsOpTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathOpsQuadIntersectionTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathOpsQuadIntersectionTestData.cpp path ops work in progress 2013-10-02 14:49:34 +00:00
PathOpsQuadIntersectionTestData.h Add intersections for path ops 2013-04-08 11:50:00 +00:00
PathOpsQuadLineIntersectionTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathOpsQuadLineIntersectionThreadedTest.cpp turn off debugging printfs 2013-07-23 15:27:41 +00:00
PathOpsQuadParameterizationTest.cpp path ops work in progress 2013-04-15 19:13:59 +00:00
PathOpsQuadReduceOrderTest.cpp Clean up SkTypes.h. 2013-10-11 18:50:45 +00:00
PathOpsSimplifyDegenerateThreadedTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsSimplifyFailTest.cpp path ops work in progress 2013-09-16 15:55:01 +00:00
PathOpsSimplifyQuadralateralsThreadedTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsSimplifyQuadThreadedTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsSimplifyRectThreadedTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsSimplifyTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-10-03 07:01:37 +00:00
PathOpsSimplifyTrianglesThreadedTest.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsSkpClipTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathOpsSkpTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathOpsTestCommon.cpp Sanitizing source files in Housekeeper-Nightly 2013-07-17 07:01:13 +00:00
PathOpsTestCommon.h harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
PathOpsThreadedCommon.cpp path ops work in progress 2013-09-16 15:55:01 +00:00
PathOpsThreadedCommon.h pathops work in progress 2013-11-01 17:36:03 +00:00
PathOpsTypesTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
PathTest.cpp Revert "Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream." 2013-11-04 21:35:55 +00:00
PathUtilsTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
PDFPrimitivesTest.cpp Use SkPicture::ExtractBitmap callback in pdf too, there is no need for a specialized function pointer for pdf only only to pass a rectangle, when we can use subseted bitmaps. 2013-10-03 19:29:21 +00:00
PictureTest.cpp Expose SkPicture::willPlayBackBitmaps() 2013-10-24 11:12:47 +00:00
PictureUtilsTest.cpp Updated make_filepath test to reflect changes in picture_utils. TBR 2012-07-13 18:43:39 +00:00
PipeTest.cpp Defining new color constat for transparent color 2012-12-06 21:47:40 +00:00
PixelRefTest.cpp We want to give SkPixelRef a way to signal over to GrResourceCache that it's become pointless to keep around textures based on that SkPixelRef when its pixels change, so that it can be a good citizen and free those textures. 2013-10-24 17:44:27 +00:00
PointTest.cpp by hook or by crook, force gcc to return the value of SkPoint::length() to actually be a float 2013-05-06 15:59:51 +00:00
PremulAlphaRoundTripTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
QuickRejectTest.cpp Added toString to SkDrawLooper-derived classes 2013-01-28 20:21:59 +00:00
RandomTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
Reader32Test.cpp Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
ReadPixelsTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
ReadWriteAlphaTest.cpp Remove GrRefCnt.h in favor of SkRefCnt.h 2013-09-09 13:38:37 +00:00
RefCntTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
RefDictTest.cpp Extended Inst counting to find "unknown" leaked object (SkTMaskGamma) 2012-08-16 14:58:06 +00:00
RegionTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
ResourceCacheTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-08-09 07:01:22 +00:00
RoundRectTest.cpp remove contains(x,y) for rects and rrects ... not well defined, and unused 2013-10-30 17:39:43 +00:00
RTreeTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
ScalarTest.cpp Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SerializationTest.cpp Revert "Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream." 2013-11-04 21:35:55 +00:00
SHA1Test.cpp Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-31 20:28:24 +00:00
ShaderImageFilterTest.cpp Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
ShaderOpacityTest.cpp store SkAlphaType inside SkBitmap, on road to support unpremul 2013-10-21 14:00:07 +00:00
Sk64Test.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
skia_test.cpp tests: Provide a default resources path. 2013-10-29 19:50:39 +00:00
SkpSkGrTest.cpp Sanitizing source files in Housekeeper-Nightly 2013-11-02 07:02:02 +00:00
SortTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
SrcOverTest.cpp Automatic update of all copyright notices to reflect new license terms. 2011-07-28 14:26:00 +00:00
StreamTest.cpp Add a detachAsStream to SkDynamicMemoryWStream. 2013-07-19 22:32:11 +00:00
StringTest.cpp Clean up SkTypes.h. 2013-10-11 18:50:45 +00:00
StrokeTest.cpp Sanitizing source files in Skia_Periodic_House_Keeping 2013-01-26 07:06:02 +00:00
SurfaceTest.cpp move SkImage::ColorType into SkColorType 2013-11-01 13:46:54 +00:00
Test.cpp harden and speed up path op unit tests 2013-07-16 16:11:16 +00:00
Test.h Rewrite SkTRegistry to take any trivially-copyable type. 2013-09-04 17:20:18 +00:00
TestClassDef.h Add an even more convenient way to declare tests, with example. 2013-09-19 20:56:46 +00:00
TestSize.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
TileGridTest.cpp Revert "If the path is a rect, call drawRect to raster the geometry in SkCanvas::drawPath to get better performance." 2013-10-22 16:54:15 +00:00
TLSTest.cpp Tests : Unused parameters cleanup 2013-02-27 19:17:41 +00:00
ToUnicode.cpp pdf: write only ToUnicode mappings needed by the font, trimming anything out of [firstChar, lastChar] interval. 2013-09-18 19:29:08 +00:00
TSetTest.cpp Deterministic SkTSet and PDF Output 2013-07-24 01:51:08 +00:00
Typeface.cpp Update Android's FontHost to return NULL if familyName does not match 2013-09-19 12:08:40 +00:00
UnicodeTest.cpp Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/) 2012-08-23 18:14:13 +00:00
UnitTestTest.cpp Fix crash when querying a runtime config that is defined in environment 2013-08-14 18:14:37 +00:00
UtilsTest.cpp Change old PRG to be SkLCGRandom; change new one to SkRandom 2013-09-09 20:09:12 +00:00
valgrind.supp Add valgrind suppressions for driver bugs 2013-10-11 18:28:18 +00:00
WArrayTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
WritePixelsTest.cpp Remove unnamed namespace usage from tests. 2013-10-12 17:25:17 +00:00
Writer32Test.cpp Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00
XfermodeTest.cpp Revert "Revert "add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning"" 2013-10-31 17:28:30 +00:00