GrClipMaskManager.cpp revision 7a6184fdf717a1da0c6e1e37b942b17fdaa236d3
11e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 21e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com/* 31e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com * Copyright 2012 Google Inc. 41e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com * 51e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com * Use of this source code is governed by a BSD-style license that can be 61e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com * found in the LICENSE file. 71e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com */ 81e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 91e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#include "GrClipMaskManager.h" 10c26d94fd7dc0b00cd6d0e42d28285f4a38aff021bsalomon@google.com#include "GrAAConvexPathRenderer.h" 11c26d94fd7dc0b00cd6d0e42d28285f4a38aff021bsalomon@google.com#include "GrAAHairLinePathRenderer.h" 12bfe2b9d3a290d0153b82617cd6b65a4814fe89e3jvanverth@google.com#include "GrAARectRenderer.h" 13c26d94fd7dc0b00cd6d0e42d28285f4a38aff021bsalomon@google.com#include "GrDrawTargetCaps.h" 14c26d94fd7dc0b00cd6d0e42d28285f4a38aff021bsalomon@google.com#include "GrPaint.h" 15c26d94fd7dc0b00cd6d0e42d28285f4a38aff021bsalomon@google.com#include "GrPathRenderer.h" 161e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#include "GrRenderTarget.h" 171e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#include "GrStencilBuffer.h" 18c26d94fd7dc0b00cd6d0e42d28285f4a38aff021bsalomon@google.com#include "GrSWMaskHelper.h" 193a0cfeb96185934c0a36f1313f21b96c57ca6341joshualitt#include "SkRasterClip.h" 203a0cfeb96185934c0a36f1313f21b96c57ca6341joshualitt#include "SkStrokeRec.h" 213a0cfeb96185934c0a36f1313f21b96c57ca6341joshualitt#include "SkTLazy.h" 22a58fe35fdae3481cf43062f7032820c320c3d163joshualitt#include "effects/GrTextureDomain.h" 23a58fe35fdae3481cf43062f7032820c320c3d163joshualitt#include "effects/GrConvexPolyEffect.h" 24a58fe35fdae3481cf43062f7032820c320c3d163joshualitt#include "effects/GrRRectEffect.h" 25c6b3e48cb3a22d83ba3f4b9a614a5a35b05958a0bsalomon@google.com 26ba998f2ddc5a904376bfdb118976868b9ee2b6e8robertphillips@google.com#define GR_AA_CLIP 1 27a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com 288182fa0cac76e7e6d583aebba060229230516887bsalomon@google.comtypedef SkClipStack::Element Element; 2951a6286c241c1dc750d263ed9676079c898148b0bsalomon@google.com 3051a6286c241c1dc750d263ed9676079c898148b0bsalomon@google.com//////////////////////////////////////////////////////////////////////////////// 31e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.comnamespace { 32fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com// set up the draw state to enable the aa clipping mask. Besides setting up the 3308283afc265f1153834256fc1012519813ba6b73bsalomon@google.com// stage matrix this also alters the vertex layout 34329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualittvoid setup_drawstate_aaclip(GrDrawTarget* gpu, 35e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com GrTexture* result, 36e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com const SkIRect &devBound) { 37a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com GrDrawState* drawState = gpu->drawState(); 38f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(drawState); 39a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com 40b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com SkMatrix mat; 41c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com // We want to use device coords to compute the texture coordinates. We set our matrix to be 42c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com // equal to the view matrix followed by an offset to the devBound, and then a scaling matrix to 43c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com // normalized coords. We apply this matrix to the vertex positions rather than local coords. 44a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com mat.setIDiv(result->width(), result->height()); 45fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com mat.preTranslate(SkIntToScalar(-devBound.fLeft), 467b11289b4e4d117bbcee6d2460b057d0fcf6e437robertphillips@google.com SkIntToScalar(-devBound.fTop)); 47a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com mat.preConcat(drawState->getViewMatrix()); 48a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com 497b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com SkIRect domainTexels = SkIRect::MakeWH(devBound.width(), devBound.height()); 504c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // This could be a long-lived effect that is cached with the alpha-mask. 51b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt drawState->addCoverageProcessor( 52eb6879f50a5564eeb981ec5616b55bf685eb76fcbsalomon@google.com GrTextureDomainEffect::Create(result, 537b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com mat, 54907fbd53c5e5dd4cbde7b72f9242b51febd7ef95commit-bot@chromium.org GrTextureDomain::MakeTexelDomain(result, domainTexels), 55907fbd53c5e5dd4cbde7b72f9242b51febd7ef95commit-bot@chromium.org GrTextureDomain::kDecal_Mode, 56b86add1ad37776818e1f730359ec587c9fdbff5fhumper@google.com GrTextureParams::kNone_FilterMode, 5777af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com kPosition_GrCoordSet))->unref(); 58a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com} 59a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com 60e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.combool path_needs_SW_renderer(GrContext* context, 61329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawTarget* gpu, 62e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com const SkPath& origPath, 63e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com const SkStrokeRec& stroke, 64e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com bool doAA) { 65e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com // the gpu alpha mask will draw the inverse paths as non-inverse to a temp buffer 66e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com SkTCopyOnFirstWrite<SkPath> path(origPath); 67e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com if (path->isInverseFillType()) { 68e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com path.writable()->toggleInverseFillType(); 69e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com } 70e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com // last (false) parameter disallows use of the SW path renderer 7145a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com GrPathRendererChain::DrawType type = doAA ? 7245a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com GrPathRendererChain::kColorAntiAlias_DrawType : 7345a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com GrPathRendererChain::kColor_DrawType; 7445a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com 75e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com return NULL == context->getPathRenderer(*path, stroke, gpu, false, type); 76e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com} 77e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com 786b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com} 796b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 80fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com/* 81fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com * This method traverses the clip stack to see if the GrSoftwarePathRenderer 82fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com * will be used on any element. If so, it returns true to indicate that the 83fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com * entire clip should be rendered in SW and then uploaded en masse to the gpu. 84fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com */ 85bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarinabool GrClipMaskManager::useSWOnlyPath(const GrReducedClip::ElementList& elements) { 86a3e5c63ab0264332169df4583a8a7da186fb4e66robertphillips@google.com 878a4fc40b02fa0a8300ade26863f4ddae69197d62robertphillips@google.com // TODO: generalize this function so that when 88fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com // a clip gets complex enough it can just be done in SW regardless 89fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com // of whether it would invoke the GrSoftwarePathRenderer. 905f74cf8c49701f514b69dc6f1a8b5c0ffd78af0asugoi@google.com SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle); 91d21444aab7128c97f4e0eb5e9bf05111d5037292skia.committer@gmail.com 92bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina for (GrReducedClip::ElementList::Iter iter(elements.headIter()); iter.get(); iter.next()) { 934c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const Element* element = iter.get(); 94f69a11b5c5dc5ae02489dfe7ca6432d641b9f121robertphillips@google.com // rects can always be drawn directly w/o using the software path 95e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org // Skip rrects once we're drawing them directly. 96e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org if (Element::kRect_Type != element->getType()) { 97e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org SkPath path; 98e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org element->asPath(&path); 99329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt if (path_needs_SW_renderer(this->getContext(), fClipTarget, path, stroke, 100329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt element->isAA())) { 101e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org return true; 102e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org } 103fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com } 104fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com } 1054c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return false; 106a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com} 107a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com 108bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarinabool GrClipMaskManager::installClipEffects(const GrReducedClip::ElementList& elements, 109e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org GrDrawState::AutoRestoreEffects* are, 110e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org const SkVector& clipToRTOffset, 111217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein const SkRect* drawBounds) { 112e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 113329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawState* drawState = fClipTarget->drawState(); 114e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org SkRect boundsInClipSpace; 11549f085dddff10473b6ebf832a974288300224e60bsalomon if (drawBounds) { 116e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org boundsInClipSpace = *drawBounds; 117e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org boundsInClipSpace.offset(-clipToRTOffset.fX, -clipToRTOffset.fY); 118e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 119e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 120e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org are->set(drawState); 121e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org GrRenderTarget* rt = drawState->getRenderTarget(); 122bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina GrReducedClip::ElementList::Iter iter(elements); 123e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 124e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org bool setARE = false; 125e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org bool failed = false; 126e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 12749f085dddff10473b6ebf832a974288300224e60bsalomon while (iter.get()) { 128e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org SkRegion::Op op = iter.get()->getOp(); 129e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org bool invert; 130e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org bool skip = false; 131e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org switch (op) { 132e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org case SkRegion::kReplace_Op: 133e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org SkASSERT(iter.get() == elements.head()); 134e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // Fallthrough, handled same as intersect. 135e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org case SkRegion::kIntersect_Op: 136e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org invert = false; 13749f085dddff10473b6ebf832a974288300224e60bsalomon if (drawBounds && iter.get()->contains(boundsInClipSpace)) { 138e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org skip = true; 139e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 140e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 141e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org case SkRegion::kDifference_Op: 142e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org invert = true; 143e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // We don't currently have a cheap test for whether a rect is fully outside an 144e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // element's primitive, so don't attempt to set skip. 145e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 146e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org default: 147e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org failed = true; 148e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 149e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 150e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (failed) { 151e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 152e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 153e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 154e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (!skip) { 155b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt GrPrimitiveEdgeType edgeType; 156e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (GR_AA_CLIP && iter.get()->isAA()) { 157e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (rt->isMultisampled()) { 158217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein // Coverage based AA clips don't place nicely with MSAA. 159e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org failed = true; 160e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 161e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 162b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt edgeType = 163b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt invert ? kInverseFillAA_GrProcessorEdgeType : kFillAA_GrProcessorEdgeType; 164e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } else { 165b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt edgeType = 166b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt invert ? kInverseFillBW_GrProcessorEdgeType : kFillBW_GrProcessorEdgeType; 167e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 168b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt SkAutoTUnref<GrFragmentProcessor> fp; 169e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org switch (iter.get()->getType()) { 170e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org case SkClipStack::Element::kPath_Type: 171b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt fp.reset(GrConvexPolyEffect::Create(edgeType, iter.get()->getPath(), 172e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org &clipToRTOffset)); 173e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 174e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org case SkClipStack::Element::kRRect_Type: { 175e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org SkRRect rrect = iter.get()->getRRect(); 176e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org rrect.offset(clipToRTOffset.fX, clipToRTOffset.fY); 177b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt fp.reset(GrRRectEffect::Create(edgeType, rrect)); 178e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 179e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 180e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org case SkClipStack::Element::kRect_Type: { 181e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org SkRect rect = iter.get()->getRect(); 182e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org rect.offset(clipToRTOffset.fX, clipToRTOffset.fY); 183b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt fp.reset(GrConvexPolyEffect::Create(edgeType, rect)); 184e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 185e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 186e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org default: 187e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 188e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 189b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt if (fp) { 190e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (!setARE) { 191329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt are->set(fClipTarget->drawState()); 192e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org setARE = true; 193e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 194329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawState()->addCoverageProcessor(fp); 195217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein } else { 196e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org failed = true; 197e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org break; 198e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 199e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 200217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein iter.next(); 201e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 202e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 203e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (failed) { 204e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org are->set(NULL); 205e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 206e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 207e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org return !failed; 208e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org} 209e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org 210f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com//////////////////////////////////////////////////////////////////////////////// 2116b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com// sort out what kind of clip mask needs to be created: alpha, stencil, 2126b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com// scissor, or entirely software 213eb6879f50a5564eeb981ec5616b55bf685eb76fcbsalomon@google.combool GrClipMaskManager::setupClipping(const GrClipData* clipDataIn, 21477b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt const SkRect* devBounds, 2153ae0e6c2b213d45c370846a4d4182a6754ca493ecommit-bot@chromium.org GrDrawState::AutoRestoreEffects* are, 21677b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt GrDrawState::AutoRestoreStencil* ars, 2176db519c42471aaaa8a8e1a3ece314014481ab832joshualitt ScissorState* scissorState) { 218c8f7f47afaf8f9471e6d111655c5610a8bd210a2bsalomon@google.com fCurrClipMaskType = kNone_ClipMaskType; 2197a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt if (kRespectClip_StencilClipMode == fClipMode) { 2207a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt fClipMode = kIgnoreClip_StencilClipMode; 2217a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt } 222a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 223bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina GrReducedClip::ElementList elements(16); 224d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.org int32_t genID; 225bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina GrReducedClip::InitialState initialState; 2264c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIRect clipSpaceIBounds; 2274c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com bool requiresAA; 2284c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 229329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawState* drawState = fClipTarget->drawState(); 2301e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 2314c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const GrRenderTarget* rt = drawState->getRenderTarget(); 2321e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // GrDrawTarget should have filtered this for us 23349f085dddff10473b6ebf832a974288300224e60bsalomon SkASSERT(rt); 2341e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 2354c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com bool ignoreClip = !drawState->isClipState() || clipDataIn->fClipStack->isWideOpen(); 2364c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (!ignoreClip) { 2374c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIRect clipSpaceRTIBounds = SkIRect::MakeWH(rt->width(), rt->height()); 2384c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com clipSpaceRTIBounds.offset(clipDataIn->fOrigin); 239bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina GrReducedClip::ReduceClipStack(*clipDataIn->fClipStack, 240bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina clipSpaceRTIBounds, 241bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina &elements, 242bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina &genID, 243bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina &initialState, 244bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina &clipSpaceIBounds, 245bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina &requiresAA); 2464c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (elements.isEmpty()) { 247bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina if (GrReducedClip::kAllIn_InitialState == initialState) { 2484c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com ignoreClip = clipSpaceIBounds == clipSpaceRTIBounds; 2494c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } else { 2504c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return false; 2514c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 2524c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 2534c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 2543e11c0bd92fbd12f59080c3f9450201d6105db83robertphillips@google.com 2554c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (ignoreClip) { 25677b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt this->setDrawStateStencil(ars); 2574c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return true; 258a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } 259a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 260e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // An element count of 4 was chosen because of the common pattern in Blink of: 261e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // isect RR 262e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // diff RR 263e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // isect convex_poly 264e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // isect convex_poly 265e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // when drawing rounded div borders. This could probably be tuned based on a 266e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // configuration's relative costs of switching RTs to generate a mask vs 267e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org // longer shaders. 268e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (elements.count() <= 4) { 269e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org SkVector clipToRTOffset = { SkIntToScalar(-clipDataIn->fOrigin.fX), 270b21fac156d9287d6c0cfd446d707c4c7be6fae6ecommit-bot@chromium.org SkIntToScalar(-clipDataIn->fOrigin.fY) }; 271e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org if (elements.isEmpty() || 272217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein (requiresAA && this->installClipEffects(elements, are, clipToRTOffset, devBounds))) { 273217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein SkIRect scissorSpaceIBounds(clipSpaceIBounds); 274217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein scissorSpaceIBounds.offset(-clipDataIn->fOrigin); 275217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein if (NULL == devBounds || 276217daa7ec592fc306edffb9fb2a3d8c7ebff8c2dmtklein !SkRect::Make(scissorSpaceIBounds).contains(*devBounds)) { 27777b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt scissorState->set(scissorSpaceIBounds); 278e5a041c0688ccb861cc85f8917338602864d8e5acommit-bot@chromium.org } 27977b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt this->setDrawStateStencil(ars); 28065ee5f424cb4dabd453268902c00086605d77c1dcommit-bot@chromium.org return true; 28165ee5f424cb4dabd453268902c00086605d77c1dcommit-bot@chromium.org } 28265ee5f424cb4dabd453268902c00086605d77c1dcommit-bot@chromium.org } 283d3066bd9b4a37cf4a39e7df7e1432f3df10dbc67bsalomon@google.com 28465ee5f424cb4dabd453268902c00086605d77c1dcommit-bot@chromium.org#if GR_AA_CLIP 285a3e5c63ab0264332169df4583a8a7da186fb4e66robertphillips@google.com // If MSAA is enabled we can do everything in the stencil buffer. 2864c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (0 == rt->numSamples() && requiresAA) { 2876b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com GrTexture* result = NULL; 288a3e5c63ab0264332169df4583a8a7da186fb4e66robertphillips@google.com 2894c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (this->useSWOnlyPath(elements)) { 2904c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // The clip geometry is complex enough that it will be more efficient to create it 2914c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // entirely in software 2924c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com result = this->createSoftwareClipMask(genID, 2934c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com initialState, 2944c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com elements, 2954c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com clipSpaceIBounds); 2964c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } else { 2974c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com result = this->createAlphaClipMask(genID, 2984c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com initialState, 2994c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com elements, 3004c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com clipSpaceIBounds); 3014c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 3026b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 30349f085dddff10473b6ebf832a974288300224e60bsalomon if (result) { 3044c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // The mask's top left coord should be pinned to the rounded-out top left corner of 3054c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // clipSpace bounds. We determine the mask's position WRT to the render target here. 3064c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIRect rtSpaceMaskBounds = clipSpaceIBounds; 3074c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com rtSpaceMaskBounds.offset(-clipDataIn->fOrigin); 308329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt are->set(fClipTarget->drawState()); 309329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt setup_drawstate_aaclip(fClipTarget, result, rtSpaceMaskBounds); 31077b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt this->setDrawStateStencil(ars); 311f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com return true; 312f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } 3134c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // if alpha clip mask creation fails fall through to the non-AA code paths 314f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } 315f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com#endif // GR_AA_CLIP 316f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 3174c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // Either a hard (stencil buffer) clip was explicitly requested or an anti-aliased clip couldn't 3184c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // be created. In either case, free up the texture in the anti-aliased mask cache. 3194c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // TODO: this may require more investigation. Ganesh performs a lot of utility draws (e.g., 3204c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // clears, InOrderDrawBuffer playbacks) that hit the stencil buffer path. These may be 3214c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // "incorrectly" clearing the AA cache. 3225acc0e36d987dff3172fd45a14b66c52a51d49e4robertphillips@google.com fAACache.reset(); 3235acc0e36d987dff3172fd45a14b66c52a51d49e4robertphillips@google.com 3241e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // use the stencil clip if we can't represent the clip as a rectangle. 3254c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIPoint clipSpaceToStencilSpaceOffset = -clipDataIn->fOrigin; 326d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.org this->createStencilClipMask(genID, 327d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.org initialState, 3284c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com elements, 3294c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com clipSpaceIBounds, 3304c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com clipSpaceToStencilSpaceOffset); 3314c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 3324c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // This must occur after createStencilClipMask. That function may change the scissor. Also, it 3334c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // only guarantees that the stencil mask is correct within the bounds it was passed, so we must 3344c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // use both stencil and scissor test to the bounds for the final draw. 3354c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIRect scissorSpaceIBounds(clipSpaceIBounds); 3364c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com scissorSpaceIBounds.offset(clipSpaceToStencilSpaceOffset); 33777b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt scissorState->set(scissorSpaceIBounds); 33877b1307c1f5dac019575a6d431d5ce657370c4fbjoshualitt this->setDrawStateStencil(ars); 3391e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com return true; 3401e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com} 3411e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 3421e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#define VISUALIZE_COMPLEX_CLIP 0 3431e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 3441e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#if VISUALIZE_COMPLEX_CLIP 345223137f49d1a4e805f5c1b1c20b7fd68719ac54btfarina@chromium.org #include "SkRandom.h" 346223137f49d1a4e805f5c1b1c20b7fd68719ac54btfarina@chromium.org SkRandom gRandom; 3471e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com #define SET_RANDOM_COLOR drawState->setColor(0xff000000 | gRandom.nextU()); 3481e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#else 3491e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com #define SET_RANDOM_COLOR 3501e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#endif 3511e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 3521e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.comnamespace { 353f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 354f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com//////////////////////////////////////////////////////////////////////////////// 355fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com// set up the OpenGL blend function to perform the specified 356fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com// boolean operation for alpha clip mask creation 3576b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.comvoid setup_boolean_blendcoeffs(GrDrawState* drawState, SkRegion::Op op) { 358f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 359f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com switch (op) { 360f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com case SkRegion::kReplace_Op: 36147059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com drawState->setBlendFunc(kOne_GrBlendCoeff, kZero_GrBlendCoeff); 362f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com break; 363f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com case SkRegion::kIntersect_Op: 36447059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com drawState->setBlendFunc(kDC_GrBlendCoeff, kZero_GrBlendCoeff); 365f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com break; 366f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com case SkRegion::kUnion_Op: 36747059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com drawState->setBlendFunc(kOne_GrBlendCoeff, kISC_GrBlendCoeff); 368f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com break; 369f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com case SkRegion::kXOR_Op: 37047059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com drawState->setBlendFunc(kIDC_GrBlendCoeff, kISC_GrBlendCoeff); 371f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com break; 372f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com case SkRegion::kDifference_Op: 37347059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com drawState->setBlendFunc(kZero_GrBlendCoeff, kISC_GrBlendCoeff); 374f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com break; 375f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com case SkRegion::kReverseDifference_Op: 37647059542e7aa153926377456a6c611e55c8e428cbsalomon@google.com drawState->setBlendFunc(kIDC_GrBlendCoeff, kZero_GrBlendCoeff); 377f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com break; 378f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com default: 379f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(false); 380f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com break; 381f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } 382f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com} 383f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 38472176b2d38db005863a54e3dd6657bbabd068bb6robertphillips@google.com} 385f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 386f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com//////////////////////////////////////////////////////////////////////////////// 387b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.combool GrClipMaskManager::drawElement(GrTexture* target, 388e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com const SkClipStack::Element* element, 389e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com GrPathRenderer* pr) { 390329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawState* drawState = fClipTarget->drawState(); 391f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 392f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com drawState->setRenderTarget(target->asRenderTarget()); 393f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 394e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org // TODO: Draw rrects directly here. 3958182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com switch (element->getType()) { 396e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org case Element::kEmpty_Type: 397e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org SkDEBUGFAIL("Should never get here with an empty element."); 398e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org break; 3998182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com case Element::kRect_Type: 400b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt // TODO: Do rects directly to the accumulator using a aa-rect GrProcessor that covers 401b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt // the entire mask bounds and writes 0 outside the rect. 4028182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com if (element->isAA()) { 403329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt this->getContext()->getAARectRenderer()->fillAARect(fClipTarget, 404a58fe35fdae3481cf43062f7032820c320c3d163joshualitt element->getRect(), 405a58fe35fdae3481cf43062f7032820c320c3d163joshualitt SkMatrix::I(), 406a58fe35fdae3481cf43062f7032820c320c3d163joshualitt element->getRect()); 4078182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com } else { 408329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawSimpleRect(element->getRect()); 4098182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com } 4108182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com return true; 411e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org default: { 412e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org SkPath path; 413e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org element->asPath(&path); 414b3eb687f8a89eb1eacd1afb4016401eb392f66abjvanverth path.setIsVolatile(true); 415e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org if (path.isInverseFillType()) { 416e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org path.toggleInverseFillType(); 417e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com } 4185f74cf8c49701f514b69dc6f1a8b5c0ffd78af0asugoi@google.com SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle); 419e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com if (NULL == pr) { 420e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com GrPathRendererChain::DrawType type; 421e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com type = element->isAA() ? GrPathRendererChain::kColorAntiAlias_DrawType : 422e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com GrPathRendererChain::kColor_DrawType; 423329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt pr = this->getContext()->getPathRenderer(path, stroke, fClipTarget, false, type); 424e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com } 425e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com if (NULL == pr) { 4264c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return false; 4274c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 428329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt pr->drawPath(path, stroke, fClipTarget, element->isAA()); 4294c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com break; 4304c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 431f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } 432f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com return true; 433f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com} 434f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 435b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.combool GrClipMaskManager::canStencilAndDrawElement(GrTexture* target, 436b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com const SkClipStack::Element* element, 437e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com GrPathRenderer** pr) { 438329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawState* drawState = fClipTarget->drawState(); 439b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com drawState->setRenderTarget(target->asRenderTarget()); 440b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 441e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org if (Element::kRect_Type == element->getType()) { 442e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org return true; 443e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org } else { 444e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org // We shouldn't get here with an empty clip element. 445e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org SkASSERT(Element::kEmpty_Type != element->getType()); 446e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org SkPath path; 447e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org element->asPath(&path); 448e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org if (path.isInverseFillType()) { 449e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org path.toggleInverseFillType(); 450b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com } 451e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle); 452e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org GrPathRendererChain::DrawType type = element->isAA() ? 453e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org GrPathRendererChain::kStencilAndColorAntiAlias_DrawType : 454e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org GrPathRendererChain::kStencilAndColor_DrawType; 455329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt *pr = this->getContext()->getPathRenderer(path, stroke, fClipTarget, false, type); 45649f085dddff10473b6ebf832a974288300224e60bsalomon return SkToBool(*pr); 457b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com } 458b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com} 459b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 4607b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.comvoid GrClipMaskManager::mergeMask(GrTexture* dstMask, 4617b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com GrTexture* srcMask, 4627b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com SkRegion::Op op, 463fd03d4a829efe2d77a712fd991927c55f59a2ffecommit-bot@chromium.org const SkIRect& dstBound, 464fd03d4a829efe2d77a712fd991927c55f59a2ffecommit-bot@chromium.org const SkIRect& srcBound) { 465137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com GrDrawState::AutoViewMatrixRestore avmr; 466329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawState* drawState = fClipTarget->drawState(); 467137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com SkAssertResult(avmr.setIdentity(drawState)); 468eb6879f50a5564eeb981ec5616b55bf685eb76fcbsalomon@google.com GrDrawState::AutoRestoreEffects are(drawState); 469f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 4707b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com drawState->setRenderTarget(dstMask->asRenderTarget()); 471f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 4727b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com setup_boolean_blendcoeffs(drawState, op); 47372b2e6fff3f54c6aa80a98eab4c73f02a8cd450dskia.committer@gmail.com 474b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com SkMatrix sampleM; 4757b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com sampleM.setIDiv(srcMask->width(), srcMask->height()); 476956b310f13c7412c035406c658ff16ca85eac656skia.committer@gmail.com 477b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt drawState->addColorProcessor( 4787b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com GrTextureDomainEffect::Create(srcMask, 4797b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com sampleM, 480907fbd53c5e5dd4cbde7b72f9242b51febd7ef95commit-bot@chromium.org GrTextureDomain::MakeTexelDomain(srcMask, srcBound), 481907fbd53c5e5dd4cbde7b72f9242b51febd7ef95commit-bot@chromium.org GrTextureDomain::kDecal_Mode, 482b86add1ad37776818e1f730359ec587c9fdbff5fhumper@google.com GrTextureParams::kNone_FilterMode))->unref(); 483329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawSimpleRect(SkRect::Make(dstBound)); 484f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com} 485f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 486427cf28861867c0ea9aafca3a23878ec4068ad99bsalomonGrTexture* GrClipMaskManager::createTempMask(int width, int height) { 487f2703d83da3ab2ae18b45231fd4f11e16cce3184bsalomon GrSurfaceDesc desc; 488f2703d83da3ab2ae18b45231fd4f11e16cce3184bsalomon desc.fFlags = kRenderTarget_GrSurfaceFlag|kNoStencil_GrSurfaceFlag; 4894c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com desc.fWidth = width; 4904c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com desc.fHeight = height; 49175b3c9633cb9a594dab0ccf51dab1e694c149a18robertphillips@google.com desc.fConfig = kAlpha_8_GrPixelConfig; 4926b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 493329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt return this->getContext()->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch); 4946d62df404bf420bedff4d7b5edd061740a673d44robertphillips@google.com} 4956d62df404bf420bedff4d7b5edd061740a673d44robertphillips@google.com 4966b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com//////////////////////////////////////////////////////////////////////////////// 497ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski// Return the texture currently in the cache if it exists. Otherwise, return NULL 498ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevskiGrTexture* GrClipMaskManager::getCachedMaskTexture(int32_t elementsGenID, 499ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski const SkIRect& clipSpaceIBounds) { 500d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.org bool cached = fAACache.canReuse(elementsGenID, clipSpaceIBounds); 5014c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (!cached) { 502ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski return NULL; 503ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski } 5044c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 505ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski return fAACache.getLastMask(); 506ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski} 507f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 508ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski//////////////////////////////////////////////////////////////////////////////// 509ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski// Allocate a texture in the texture cache. This function returns the texture 510ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski// allocated (or NULL on error). 511ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevskiGrTexture* GrClipMaskManager::allocMaskTexture(int32_t elementsGenID, 512ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski const SkIRect& clipSpaceIBounds, 513ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski bool willUpload) { 514ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski // Since we are setting up the cache we should free up the 515ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski // currently cached mask so it can be reused. 516ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski fAACache.reset(); 517a72eef322c686954cdffa849dc26d8133b802f1drobertphillips@google.com 518f2703d83da3ab2ae18b45231fd4f11e16cce3184bsalomon GrSurfaceDesc desc; 519f2703d83da3ab2ae18b45231fd4f11e16cce3184bsalomon desc.fFlags = willUpload ? kNone_GrSurfaceFlags : kRenderTarget_GrSurfaceFlag; 520ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski desc.fWidth = clipSpaceIBounds.width(); 521ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski desc.fHeight = clipSpaceIBounds.height(); 522ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski desc.fConfig = kRGBA_8888_GrPixelConfig; 523ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski if (willUpload || this->getContext()->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) { 524ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski // We would always like A8 but it isn't supported on all platforms 525ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski desc.fConfig = kAlpha_8_GrPixelConfig; 5268fff356c8505f2ac78e1fc9dc17c1192e3a608e4robertphillips@google.com } 5278fff356c8505f2ac78e1fc9dc17c1192e3a608e4robertphillips@google.com 528ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski fAACache.acquireMask(elementsGenID, desc, clipSpaceIBounds); 529ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski return fAACache.getLastMask(); 5306b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com} 531f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 5326b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com//////////////////////////////////////////////////////////////////////////////// 5336b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com// Create a 8-bit clip mask in alpha 534d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.orgGrTexture* GrClipMaskManager::createAlphaClipMask(int32_t elementsGenID, 535bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina GrReducedClip::InitialState initialState, 536bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina const GrReducedClip::ElementList& elements, 5374c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const SkIRect& clipSpaceIBounds) { 538f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(kNone_ClipMaskType == fCurrClipMaskType); 539c8f7f47afaf8f9471e6d111655c5610a8bd210a2bsalomon@google.com 540ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski // First, check for cached texture 541ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski GrTexture* result = this->getCachedMaskTexture(elementsGenID, clipSpaceIBounds); 54249f085dddff10473b6ebf832a974288300224e60bsalomon if (result) { 543c8f7f47afaf8f9471e6d111655c5610a8bd210a2bsalomon@google.com fCurrClipMaskType = kAlpha_ClipMaskType; 5444c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return result; 5456b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com } 546f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 547ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski // There's no texture in the cache. Let's try to allocate it then. 548ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski result = this->allocMaskTexture(elementsGenID, clipSpaceIBounds, false); 5494c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (NULL == result) { 550f105b109264f71dfb0bfd9977e6a5dd0a5a12f57robertphillips@google.com fAACache.reset(); 5514c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return NULL; 552f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } 553f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 5544c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // The top-left of the mask corresponds to the top-left corner of the bounds. 5557b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com SkVector clipToMaskOffset = { 5564c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIntToScalar(-clipSpaceIBounds.fLeft), 5574c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIntToScalar(-clipSpaceIBounds.fTop) 5587b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com }; 5594c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // The texture may be larger than necessary, this rect represents the part of the texture 5604c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // we populate with a rasterization of the clip. 5614c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIRect maskSpaceIBounds = SkIRect::MakeWH(clipSpaceIBounds.width(), clipSpaceIBounds.height()); 562f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 563137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com // Set the matrix so that rendered clip elements are transformed to mask space from clip space. 564137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com SkMatrix translate; 565137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com translate.setTranslate(clipToMaskOffset); 566329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawTarget::AutoGeometryAndStatePush agasp(fClipTarget, GrDrawTarget::kReset_ASRInit, 567329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt &translate); 568137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com 569329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawState* drawState = fClipTarget->drawState(); 570137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com 571cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com // We're drawing a coverage mask and want coverage to be run through the blend function. 572cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com drawState->enableState(GrDrawState::kCoverageDrawing_StateBit); 573cf939ae54842fc7408ee68a41427086962b4c3dcbsalomon@google.com 5747b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com // The scratch texture that we are drawing into can be substantially larger than the mask. Only 5757b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com // clear the part that we care about. 576329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->clear(&maskSpaceIBounds, 577329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrReducedClip::kAllIn_InitialState == initialState ? 0xffffffff : 0x00000000, 578329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt true, 579329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt result->asRenderTarget()); 580d9f7503e0cb0c4db856f53b4bdeec1332db6f296skia.committer@gmail.com 581b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // When we use the stencil in the below loop it is important to have this clip installed. 582b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // The second pass that zeros the stencil buffer renders the rect maskSpaceIBounds so the first 583b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // pass must not set values outside of this bounds or stencil values outside the rect won't be 584b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // cleared. 585329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawTarget::AutoClipRestore acr(fClipTarget, maskSpaceIBounds); 586b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com drawState->enableState(GrDrawState::kClip_StateBit); 587b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 588427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon SkAutoTUnref<GrTexture> temp; 589f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com // walk through each clip element and perform its set op 590bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina for (GrReducedClip::ElementList::Iter iter = elements.headIter(); iter.get(); iter.next()) { 5914c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const Element* element = iter.get(); 5928182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com SkRegion::Op op = element->getOp(); 593b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com bool invert = element->isInverseFilled(); 594f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 595b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com if (invert || SkRegion::kIntersect_Op == op || SkRegion::kReverseDifference_Op == op) { 596e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com GrPathRenderer* pr = NULL; 597e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com bool useTemp = !this->canStencilAndDrawElement(result, element, &pr); 598b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com GrTexture* dst; 5994c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // This is the bounds of the clip element in the space of the alpha-mask. The temporary 6007b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com // mask buffer can be substantially larger than the actually clip stack element. We 6017b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com // touch the minimum number of pixels necessary and use decal mode to combine it with 602b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // the accumulator. 603fd03d4a829efe2d77a712fd991927c55f59a2ffecommit-bot@chromium.org SkIRect maskSpaceElementIBounds; 604b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 605b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com if (useTemp) { 606b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com if (invert) { 607b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com maskSpaceElementIBounds = maskSpaceIBounds; 608b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com } else { 609fd03d4a829efe2d77a712fd991927c55f59a2ffecommit-bot@chromium.org SkRect elementBounds = element->getBounds(); 610b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com elementBounds.offset(clipToMaskOffset); 611b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com elementBounds.roundOut(&maskSpaceElementIBounds); 612b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com } 613b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 614427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon if (!temp) { 615427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon temp.reset(this->createTempMask(maskSpaceIBounds.fRight, 616427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon maskSpaceIBounds.fBottom)); 617427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon if (!temp) { 618427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon fAACache.reset(); 619427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon return NULL; 620427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon } 621a7aedfec9e28db36c97e49f11f2bc2e0eb624c30skia.committer@gmail.com } 622427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon dst = temp; 623b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // clear the temp target and set blend to replace 624329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->clear(&maskSpaceElementIBounds, 625b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com invert ? 0xffffffff : 0x00000000, 62656ce48ade325f6f49acb0da31d6252806e4ed7efrobertphillips@google.com true, 627b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com dst->asRenderTarget()); 628b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com setup_boolean_blendcoeffs(drawState, SkRegion::kReplace_Op); 629a7aedfec9e28db36c97e49f11f2bc2e0eb624c30skia.committer@gmail.com 6304c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } else { 631b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // draw directly into the result with the stencil set to make the pixels affected 632b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // by the clip shape be non-zero. 633b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com dst = result; 634b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com GR_STATIC_CONST_SAME_STENCIL(kStencilInElement, 635b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com kReplace_StencilOp, 636b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com kReplace_StencilOp, 637b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com kAlways_StencilFunc, 638b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 0xffff, 639b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 0xffff, 640b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 0xffff); 641b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com drawState->setStencil(kStencilInElement); 642a7aedfec9e28db36c97e49f11f2bc2e0eb624c30skia.committer@gmail.com setup_boolean_blendcoeffs(drawState, op); 6434c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 6447b7cdd147f5528865238e5ed98c79e6d319fde9bbsalomon@google.com 645c6b3e48cb3a22d83ba3f4b9a614a5a35b05958a0bsalomon@google.com drawState->setAlpha(invert ? 0x00 : 0xff); 646c6b3e48cb3a22d83ba3f4b9a614a5a35b05958a0bsalomon@google.com 647e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com if (!this->drawElement(dst, element, pr)) { 648e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com fAACache.reset(); 649e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com return NULL; 6504c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com } 651f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 652b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com if (useTemp) { 653b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // Now draw into the accumulator using the real operation and the temp buffer as a 654b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // texture 655b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com this->mergeMask(result, 656427cf28861867c0ea9aafca3a23878ec4068ad99bsalomon temp, 657b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com op, 658b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com maskSpaceIBounds, 659b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com maskSpaceElementIBounds); 660b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com } else { 661b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com // Draw to the exterior pixels (those with a zero stencil value). 662b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com drawState->setAlpha(invert ? 0xff : 0x00); 663b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com GR_STATIC_CONST_SAME_STENCIL(kDrawOutsideElement, 664b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com kZero_StencilOp, 665b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com kZero_StencilOp, 666b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com kEqual_StencilFunc, 667b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 0xffff, 668b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 0x0000, 669b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com 0xffff); 670b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com drawState->setStencil(kDrawOutsideElement); 671329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawSimpleRect(clipSpaceIBounds); 672b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com drawState->disableStencil(); 673b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com } 674f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } else { 675e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com // all the remaining ops can just be directly draw into the accumulation buffer 676c6b3e48cb3a22d83ba3f4b9a614a5a35b05958a0bsalomon@google.com drawState->setAlpha(0xff); 6776b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com setup_boolean_blendcoeffs(drawState, op); 678b68addd39f3e7183facc70374a133e7a6fb603c5bsalomon@google.com this->drawElement(result, element); 679f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } 680f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com } 681f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 682c8f7f47afaf8f9471e6d111655c5610a8bd210a2bsalomon@google.com fCurrClipMaskType = kAlpha_ClipMaskType; 6834c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return result; 6841e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com} 6851e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 686f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com//////////////////////////////////////////////////////////////////////////////// 687fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com// Create a 1-bit clip mask in the stencil buffer. 'devClipBounds' are in device 688f8d904a7eed435b9de68fd2eef6d7f3c59fcc9ccrobertphillips@google.com// (as opposed to canvas) coordinates 689d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.orgbool GrClipMaskManager::createStencilClipMask(int32_t elementsGenID, 690bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina GrReducedClip::InitialState initialState, 691bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina const GrReducedClip::ElementList& elements, 6924c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const SkIRect& clipSpaceIBounds, 6934c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const SkIPoint& clipSpaceToStencilOffset) { 6941e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 695f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(kNone_ClipMaskType == fCurrClipMaskType); 6961e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 697329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawState* drawState = fClipTarget->drawState(); 698f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(drawState->isClipState()); 6991e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 7001e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com GrRenderTarget* rt = drawState->getRenderTarget(); 70149f085dddff10473b6ebf832a974288300224e60bsalomon SkASSERT(rt); 7021e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 7031e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // TODO: dynamically attach a SB when needed. 7041e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com GrStencilBuffer* stencilBuffer = rt->getStencilBuffer(); 7051e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com if (NULL == stencilBuffer) { 7061e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com return false; 7071e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 7081e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 709d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.org if (stencilBuffer->mustRenderClip(elementsGenID, clipSpaceIBounds, clipSpaceToStencilOffset)) { 710d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.org stencilBuffer->setLastClip(elementsGenID, clipSpaceIBounds, clipSpaceToStencilOffset); 7111e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 712137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com // Set the matrix so that rendered clip elements are transformed from clip to stencil space. 713137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com SkVector translate = { 714137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com SkIntToScalar(clipSpaceToStencilOffset.fX), 715137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com SkIntToScalar(clipSpaceToStencilOffset.fY) 716137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com }; 717137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com SkMatrix matrix; 718137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com matrix.setTranslate(translate); 719329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawTarget::AutoGeometryAndStatePush agasp(fClipTarget, GrDrawTarget::kReset_ASRInit, 720329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt &matrix); 721329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt drawState = fClipTarget->drawState(); 722137f1347abaf0bb6a945e91c2f6cb49f0ee69bc3bsalomon@google.com 7231e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com drawState->setRenderTarget(rt); 7241e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 7259f13174da5295e88d447f29740318003b9cec9c3bsalomon@google.com // We set the current clip to the bounds so that our recursive draws are scissored to them. 7269f13174da5295e88d447f29740318003b9cec9c3bsalomon@google.com SkIRect stencilSpaceIBounds(clipSpaceIBounds); 7279f13174da5295e88d447f29740318003b9cec9c3bsalomon@google.com stencilSpaceIBounds.offset(clipSpaceToStencilOffset); 728329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrDrawTarget::AutoClipRestore acr(fClipTarget, stencilSpaceIBounds); 7299f13174da5295e88d447f29740318003b9cec9c3bsalomon@google.com drawState->enableState(GrDrawState::kClip_StateBit); 7309f13174da5295e88d447f29740318003b9cec9c3bsalomon@google.com 7311e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#if !VISUALIZE_COMPLEX_CLIP 7321e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com drawState->enableState(GrDrawState::kNoColorWrites_StateBit); 7331e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com#endif 7341e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 7351e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com int clipBit = stencilBuffer->bits(); 7364c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkASSERT((clipBit <= 16) && "Ganesh only handles 16b or smaller stencil buffers"); 7371e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com clipBit = (1 << (clipBit-1)); 7381e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 739329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->clearStencilClip(stencilSpaceIBounds, 740329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrReducedClip::kAllIn_InitialState == initialState, 741329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt rt); 7421e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 7431e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // walk through each clip element and perform its set op 7441e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // with the existing clip. 745bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina for (GrReducedClip::ElementList::Iter iter(elements.headIter()); iter.get(); iter.next()) { 7464c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const Element* element = iter.get(); 7478afae61a57f87e4a50578effce6c428031499301tomhudson@google.com bool fillInverted = false; 7481e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // enabled at bottom of loop 7497a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt fClipMode = kIgnoreClip_StencilClipMode; 750ded4f4b163f5aa19c22c871178c55ecb34623846bsalomon@google.com // if the target is MSAA then we want MSAA enabled when the clip is soft 751ded4f4b163f5aa19c22c871178c55ecb34623846bsalomon@google.com if (rt->isMultisampled()) { 7528182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com drawState->setState(GrDrawState::kHWAntialias_StateBit, element->isAA()); 753ded4f4b163f5aa19c22c871178c55ecb34623846bsalomon@google.com } 7541e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 75545a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com // This will be used to determine whether the clip shape can be rendered into the 75645a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com // stencil with arbitrary stencil settings. 75745a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com GrPathRenderer::StencilSupport stencilSupport; 7581e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 7595f74cf8c49701f514b69dc6f1a8b5c0ffd78af0asugoi@google.com SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle); 76012b4e27ae1a29460e91a59f38122483e1faec697sugoi@google.com 7618182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com SkRegion::Op op = element->getOp(); 762f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com 763e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com GrPathRenderer* pr = NULL; 764e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org SkPath clipPath; 7658182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com if (Element::kRect_Type == element->getType()) { 76645a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com stencilSupport = GrPathRenderer::kNoRestriction_StencilSupport; 7671e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com fillInverted = false; 7688afae61a57f87e4a50578effce6c428031499301tomhudson@google.com } else { 769e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org element->asPath(&clipPath); 770e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org fillInverted = clipPath.isInverseFillType(); 771e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com if (fillInverted) { 772e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org clipPath.toggleInverseFillType(); 773e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com } 774e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org pr = this->getContext()->getPathRenderer(clipPath, 77545a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com stroke, 776329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget, 77745a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com false, 77845a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com GrPathRendererChain::kStencilOnly_DrawType, 779e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com &stencilSupport); 780e79f320ed6c5ec9f6164ba84be1ff586532e6517robertphillips@google.com if (NULL == pr) { 7811e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com return false; 7821e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 7831e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 7841e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 7851e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com int passes; 7861e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com GrStencilSettings stencilSettings[GrStencilSettings::kMaxStencilClipPasses]; 7871e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 78845a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com bool canRenderDirectToStencil = 78945a15f551b5b3c6c747d8eaf6466b7d3b76a8faebsalomon@google.com GrPathRenderer::kNoRestriction_StencilSupport == stencilSupport; 7901e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com bool canDrawDirectToClip; // Given the renderer, the element, 7914c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // fill rule, and set operation can 7924c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // we render the element directly to 7934c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // stencil bit used for clipping. 7944c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com canDrawDirectToClip = GrStencilSettings::GetClipPasses(op, 7954c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com canRenderDirectToStencil, 7964c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com clipBit, 7974c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com fillInverted, 7984c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com &passes, 7994c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com stencilSettings); 8001e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 8011e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // draw the element to the client stencil bits if necessary 8021e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com if (!canDrawDirectToClip) { 8031e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com GR_STATIC_CONST_SAME_STENCIL(gDrawToStencil, 8044c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com kIncClamp_StencilOp, 8054c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com kIncClamp_StencilOp, 8064c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com kAlways_StencilFunc, 8074c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 0xffff, 8084c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 0x0000, 8094c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 0xffff); 8101e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com SET_RANDOM_COLOR 8118182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com if (Element::kRect_Type == element->getType()) { 8121e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com *drawState->stencil() = gDrawToStencil; 813329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawSimpleRect(element->getRect()); 8141e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } else { 815e5b2af955b7d06815ddd405659ad62a2a8355ca3commit-bot@chromium.org if (!clipPath.isEmpty()) { 81619dd017a6256be636ccb550752bb563c4e7caeb5commit-bot@chromium.org if (canRenderDirectToStencil) { 81719dd017a6256be636ccb550752bb563c4e7caeb5commit-bot@chromium.org *drawState->stencil() = gDrawToStencil; 818329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt pr->drawPath(clipPath, stroke, fClipTarget, false); 81919dd017a6256be636ccb550752bb563c4e7caeb5commit-bot@chromium.org } else { 820329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt pr->stencilPath(clipPath, stroke, fClipTarget); 82119dd017a6256be636ccb550752bb563c4e7caeb5commit-bot@chromium.org } 8221e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 8231e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 8241e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 8251e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 8261e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // now we modify the clip bit by rendering either the clip 8271e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com // element directly or a bounding rect of the entire clip. 8287a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt fClipMode = kModifyClip_StencilClipMode; 8291e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com for (int p = 0; p < passes; ++p) { 8301e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com *drawState->stencil() = stencilSettings[p]; 8311e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com if (canDrawDirectToClip) { 8328182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com if (Element::kRect_Type == element->getType()) { 8331e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com SET_RANDOM_COLOR 834329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawSimpleRect(element->getRect()); 8351e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } else { 8361e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com SET_RANDOM_COLOR 837329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt pr->drawPath(clipPath, stroke, fClipTarget, false); 8381e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 8391e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } else { 8401e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com SET_RANDOM_COLOR 8414c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // The view matrix is setup to do clip space -> stencil space translation, so 8424c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // draw rect in clip space. 843329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawSimpleRect(SkRect::Make(clipSpaceIBounds)); 8441e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 8451e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 8461e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 8471e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com } 848c8f7f47afaf8f9471e6d111655c5610a8bd210a2bsalomon@google.com // set this last because recursive draws may overwrite it back to kNone. 849f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(kNone_ClipMaskType == fCurrClipMaskType); 850c8f7f47afaf8f9471e6d111655c5610a8bd210a2bsalomon@google.com fCurrClipMaskType = kStencil_ClipMaskType; 8517a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt fClipMode = kRespectClip_StencilClipMode; 8521e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com return true; 8531e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com} 8541e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com 855f8d904a7eed435b9de68fd2eef6d7f3c59fcc9ccrobertphillips@google.com 856411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com// mapping of clip-respecting stencil funcs to normal stencil funcs 857411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com// mapping depends on whether stencil-clipping is in effect. 858fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.comstatic const GrStencilFunc 859411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com gSpecialToBasicStencilFunc[2][kClipStencilFuncCount] = { 860411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com {// Stencil-Clipping is DISABLED, we are effectively always inside the clip 861411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // In the Clip Funcs 862411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kAlways_StencilFunc, // kAlwaysIfInClip_StencilFunc 863411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kEqual_StencilFunc, // kEqualIfInClip_StencilFunc 864411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kLess_StencilFunc, // kLessIfInClip_StencilFunc 865411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kLEqual_StencilFunc, // kLEqualIfInClip_StencilFunc 866411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // Special in the clip func that forces user's ref to be 0. 867411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kNotEqual_StencilFunc, // kNonZeroIfInClip_StencilFunc 868411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // make ref 0 and do normal nequal. 869411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com }, 870411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com {// Stencil-Clipping is ENABLED 871411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // In the Clip Funcs 872411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kEqual_StencilFunc, // kAlwaysIfInClip_StencilFunc 873411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // eq stencil clip bit, mask 874411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // out user bits. 875411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com 876411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kEqual_StencilFunc, // kEqualIfInClip_StencilFunc 877411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // add stencil bit to mask and ref 878411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com 879411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kLess_StencilFunc, // kLessIfInClip_StencilFunc 880411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kLEqual_StencilFunc, // kLEqualIfInClip_StencilFunc 881411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // for both of these we can add 882411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // the clip bit to the mask and 883411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // ref and compare as normal 884411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // Special in the clip func that forces user's ref to be 0. 885411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com kLess_StencilFunc, // kNonZeroIfInClip_StencilFunc 886411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // make ref have only the clip bit set 887411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // and make comparison be less 888411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com // 10..0 < 1..user_bits.. 889411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com } 890411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com}; 891411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com 892a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.comnamespace { 893a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com// Sets the settings to clip against the stencil buffer clip while ignoring the 894a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com// client bits. 895a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.comconst GrStencilSettings& basic_apply_stencil_clip_settings() { 896a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // stencil settings to use when clip is in stencil 897a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com GR_STATIC_CONST_SAME_STENCIL_STRUCT(gSettings, 898a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com kKeep_StencilOp, 899a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com kKeep_StencilOp, 900a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com kAlwaysIfInClip_StencilFunc, 901a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 0x0000, 902a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 0x0000, 903fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com 0x0000); 904a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com return *GR_CONST_STENCIL_SETTINGS_PTR_FROM_STRUCT_PTR(&gSettings); 905a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com} 906a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com} 907a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 908a58fe35fdae3481cf43062f7032820c320c3d163joshualittvoid GrClipMaskManager::setDrawStateStencil(GrDrawState::AutoRestoreStencil* ars) { 909a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // We make two copies of the StencilSettings here (except in the early 910a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // exit scenario. One copy from draw state to the stack var. Then another 911a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // from the stack var to the gpu. We could make this class hold a ptr to 912a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // GrGpu's fStencilSettings and eliminate the stack copy here. 913a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 914329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt const GrDrawState& drawState = fClipTarget->getDrawState(); 915a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 916a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // use stencil for clipping if clipping is enabled and the clip 917a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // has been written into the stencil. 918a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 919a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com GrStencilSettings settings; 920a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // The GrGpu client may not be using the stencil buffer but we may need to 921a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // enable it in order to respect a stencil clip. 922a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com if (drawState.getStencil().isDisabled()) { 9237a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt if (GrClipMaskManager::kRespectClip_StencilClipMode == fClipMode) { 924a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com settings = basic_apply_stencil_clip_settings(); 925a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } else { 926a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com return; 927a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } 928a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } else { 929a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com settings = drawState.getStencil(); 930a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } 931a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 932a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // TODO: dynamically attach a stencil buffer 933a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com int stencilBits = 0; 934a58fe35fdae3481cf43062f7032820c320c3d163joshualitt GrStencilBuffer* stencilBuffer = drawState.getRenderTarget()->getStencilBuffer(); 93549f085dddff10473b6ebf832a974288300224e60bsalomon if (stencilBuffer) { 936a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com stencilBits = stencilBuffer->bits(); 937a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } 938a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 939329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt SkASSERT(fClipTarget->caps()->stencilWrapOpsSupport() || !settings.usesWrapOp()); 940329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt SkASSERT(fClipTarget->caps()->twoSidedStencilSupport() || !settings.isTwoSided()); 9417a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt this->adjustStencilParams(&settings, fClipMode, stencilBits); 942329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt ars->set(fClipTarget->drawState()); 943329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget->drawState()->setStencil(settings); 944a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com} 945a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 946a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.comvoid GrClipMaskManager::adjustStencilParams(GrStencilSettings* settings, 947a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com StencilClipMode mode, 948a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com int stencilBitCnt) { 949f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(stencilBitCnt > 0); 950411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com 951411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com if (kModifyClip_StencilClipMode == mode) { 952a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // We assume that this clip manager itself is drawing to the GrGpu and 953a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // has already setup the correct values. 954a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com return; 955411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com } 956a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 957411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com unsigned int clipBit = (1 << (stencilBitCnt - 1)); 958411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com unsigned int userBits = clipBit - 1; 959411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com 960a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com GrStencilSettings::Face face = GrStencilSettings::kFront_Face; 961329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt bool twoSided = fClipTarget->caps()->twoSidedStencilSupport(); 962a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 963a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com bool finished = false; 964a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com while (!finished) { 965a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com GrStencilFunc func = settings->func(face); 966a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com uint16_t writeMask = settings->writeMask(face); 967a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com uint16_t funcMask = settings->funcMask(face); 968a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com uint16_t funcRef = settings->funcRef(face); 969a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 970f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT((unsigned) func < kStencilFuncCount); 971a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 972a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com writeMask &= userBits; 973a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 974a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com if (func >= kBasicStencilFuncCount) { 975a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com int respectClip = kRespectClip_StencilClipMode == mode; 976a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com if (respectClip) { 977a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com // The GrGpu class should have checked this 978f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(this->isClipInStencil()); 979a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com switch (func) { 980a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com case kAlwaysIfInClip_StencilFunc: 981a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcMask = clipBit; 982a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcRef = clipBit; 983a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com break; 984a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com case kEqualIfInClip_StencilFunc: 985a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com case kLessIfInClip_StencilFunc: 986a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com case kLEqualIfInClip_StencilFunc: 987a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcMask = (funcMask & userBits) | clipBit; 988a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcRef = (funcRef & userBits) | clipBit; 989a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com break; 990a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com case kNonZeroIfInClip_StencilFunc: 991a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcMask = (funcMask & userBits) | clipBit; 992a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcRef = clipBit; 993a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com break; 994a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com default: 99588cb22b6b4816c7a9ca6c5b795965b4606f9eb7bcommit-bot@chromium.org SkFAIL("Unknown stencil func"); 996a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } 997a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } else { 998a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcMask &= userBits; 999a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcRef &= userBits; 1000411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com } 1001fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com const GrStencilFunc* table = 1002a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com gSpecialToBasicStencilFunc[respectClip]; 1003a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com func = table[func - kBasicStencilFuncCount]; 1004f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(func >= 0 && func < kBasicStencilFuncCount); 1005411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com } else { 1006a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcMask &= userBits; 1007a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com funcRef &= userBits; 1008411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com } 1009a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 1010a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com settings->setFunc(face, func); 1011a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com settings->setWriteMask(face, writeMask); 1012a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com settings->setFuncMask(face, funcMask); 1013a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com settings->setFuncRef(face, funcRef); 1014a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com 1015a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com if (GrStencilSettings::kFront_Face == face) { 1016a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com face = GrStencilSettings::kBack_Face; 1017a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com finished = !twoSided; 1018a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } else { 1019a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com finished = true; 1020a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } 1021a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com } 1022a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com if (!twoSided) { 1023a320194e4242ef0e5e758aea896bfd52bcb3dac7bsalomon@google.com settings->copyFrontSettingsToBack(); 1024411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com } 1025411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com} 1026411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com 1027411dad0630913fc07f2412b4be17acfbfd914fbcbsalomon@google.com//////////////////////////////////////////////////////////////////////////////// 1028d3e5842db0cb169e10d6da1e62c94ba5cf182bb4commit-bot@chromium.orgGrTexture* GrClipMaskManager::createSoftwareClipMask(int32_t elementsGenID, 10294c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com GrReducedClip::InitialState initialState, 10304c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const GrReducedClip::ElementList& elements, 10314c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const SkIRect& clipSpaceIBounds) { 1032f6de475e5cbd143f348ff7738919e397b7fe7f57tfarina@chromium.org SkASSERT(kNone_ClipMaskType == fCurrClipMaskType); 10336b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 1034ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski GrTexture* result = this->getCachedMaskTexture(elementsGenID, clipSpaceIBounds); 103549f085dddff10473b6ebf832a974288300224e60bsalomon if (result) { 10364c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return result; 10376b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com } 10386b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 10394c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // The mask texture may be larger than necessary. We round out the clip space bounds and pin 10404c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // the top left corner of the resulting rect to the top left of the texture. 10414c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIRect maskSpaceIBounds = SkIRect::MakeWH(clipSpaceIBounds.width(), clipSpaceIBounds.height()); 10424c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 10432c75681e36b33fcafc5665d7012bbd4fc6647d83robertphillips@google.com GrSWMaskHelper helper(this->getContext()); 10446b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 1045b9086a026844e4cfd08b219e49ce3f12294cba98bsalomon@google.com SkMatrix matrix; 10464c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com matrix.setTranslate(SkIntToScalar(-clipSpaceIBounds.fLeft), 10474c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com SkIntToScalar(-clipSpaceIBounds.fTop)); 104871614ac7c63fe60dfe971f861e2b2d6325dd0039krajcevski helper.init(maskSpaceIBounds, &matrix, false); 10494c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com 1050bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina helper.clear(GrReducedClip::kAllIn_InitialState == initialState ? 0xFF : 0x00); 1051fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com 10525f74cf8c49701f514b69dc6f1a8b5c0ffd78af0asugoi@google.com SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle); 105312b4e27ae1a29460e91a59f38122483e1faec697sugoi@google.com 1054bf54e49e30cdc92f9ce3f336cc48cf6b236ddeabtfarina for (GrReducedClip::ElementList::Iter iter(elements.headIter()) ; iter.get(); iter.next()) { 1055fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com 10564c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com const Element* element = iter.get(); 10578182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com SkRegion::Op op = element->getOp(); 1058fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com 10594c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com if (SkRegion::kIntersect_Op == op || SkRegion::kReverseDifference_Op == op) { 10604c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // Intersect and reverse difference require modifying pixels outside of the geometry 10614c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // that is being "drawn". In both cases we erase all the pixels outside of the geometry 10624c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // but leave the pixels inside the geometry alone. For reverse difference we invert all 10634c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com // the pixels before clearing the ones outside the geometry. 1064fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com if (SkRegion::kReverseDifference_Op == op) { 10654469938e92d779dff05e745559e67907bbf21e78reed@google.com SkRect temp = SkRect::Make(clipSpaceIBounds); 1066fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com // invert the entire scene 1067366f1c6a09f63c76e78145cb08028f66062f31fdrobertphillips@google.com helper.draw(temp, SkRegion::kXOR_Op, false, 0xFF); 1068fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com } 1069fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com 10705c056399259bb7ec06ff1eb8ce904001b363276ccommit-bot@chromium.org SkPath clipPath; 10715c056399259bb7ec06ff1eb8ce904001b363276ccommit-bot@chromium.org element->asPath(&clipPath); 10725c056399259bb7ec06ff1eb8ce904001b363276ccommit-bot@chromium.org clipPath.toggleInverseFillType(); 10735c056399259bb7ec06ff1eb8ce904001b363276ccommit-bot@chromium.org helper.draw(clipPath, stroke, SkRegion::kReplace_Op, element->isAA(), 0x00); 1074fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com 1075fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com continue; 1076fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com } 1077fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com 1078fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com // The other ops (union, xor, diff) only affect pixels inside 1079fa66294c7705831808ce7772d4328fc626d45034robertphillips@google.com // the geometry so they can just be drawn normally 10808182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com if (Element::kRect_Type == element->getType()) { 10818182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com helper.draw(element->getRect(), op, element->isAA(), 0xFF); 10828182fa0cac76e7e6d583aebba060229230516887bsalomon@google.com } else { 10835c056399259bb7ec06ff1eb8ce904001b363276ccommit-bot@chromium.org SkPath path; 10845c056399259bb7ec06ff1eb8ce904001b363276ccommit-bot@chromium.org element->asPath(&path); 10855c056399259bb7ec06ff1eb8ce904001b363276ccommit-bot@chromium.org helper.draw(path, stroke, op, element->isAA(), 0xFF); 10866b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com } 10876b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com } 10886b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 1089ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski // Allocate clip mask texture 1090ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski result = this->allocMaskTexture(elementsGenID, clipSpaceIBounds, true); 1091ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski if (NULL == result) { 1092ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski fAACache.reset(); 1093ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski return NULL; 1094ad1dc589cef8aebf7e14672ffdaa31c6d399675dkrajcevski } 1095d92cf2ebbfbb9d737ea4a551e64ffccb08376875robertphillips@google.com helper.toTexture(result); 10966b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 1097c8f7f47afaf8f9471e6d111655c5610a8bd210a2bsalomon@google.com fCurrClipMaskType = kAlpha_ClipMaskType; 10984c2443e36fdc6c095b17e90baa4a2f26a6f00b08bsalomon@google.com return result; 10996b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com} 11006b70a7bd3328ea0a12be47b1a7f835c905f16147robertphillips@google.com 1101f294b773f0b2b9f05eb45b52dd3cb4d97b96af06robertphillips@google.com//////////////////////////////////////////////////////////////////////////////// 1102c8dc1f74b6cdda9a43a638292a608c59c1d72d80bsalomonvoid GrClipMaskManager::purgeResources() { 1103c8dc1f74b6cdda9a43a638292a608c59c1d72d80bsalomon fAACache.purgeResources(); 11041e945b7e708c633d4aed937ebfce57d52ba21d83robertphillips@google.com} 11056e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com 1106329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualittvoid GrClipMaskManager::setClipTarget(GrClipTarget* clipTarget) { 1107329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fClipTarget = clipTarget; 1108329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt fAACache.setContext(clipTarget->getContext()); 11096e4e65066a7c0dbc9bfbfe4b8f5d49c3d8a79b59bsalomon@google.com} 1110c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.org 1111c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.orgvoid GrClipMaskManager::adjustPathStencilParams(GrStencilSettings* settings) { 1112329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt const GrDrawState& drawState = fClipTarget->getDrawState(); 1113c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.org 1114c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.org // TODO: dynamically attach a stencil buffer 1115c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.org int stencilBits = 0; 1116329bf4862e9d5e05363c2b071d8ca475a0ef1952joshualitt GrStencilBuffer* stencilBuffer = drawState.getRenderTarget()->getStencilBuffer(); 111749f085dddff10473b6ebf832a974288300224e60bsalomon if (stencilBuffer) { 1118c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.org stencilBits = stencilBuffer->bits(); 11197a6184fdf717a1da0c6e1e37b942b17fdaa236d3joshualitt this->adjustStencilParams(settings, fClipMode, stencilBits); 1120c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.org } 1121c4dc0ad8e252a7e30d19b47d3d0d9f2c69faf854commit-bot@chromium.org} 1122