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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrDashLinePathRenderer.h"
#include "GrAuditTrail.h"
#include "GrGpu.h"
#include "GrPipelineBuilder.h"
#include "effects/GrDashingEffect.h"
bool GrDashLinePathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
SkPoint pts[2];
bool inverted;
if (args.fShape->style().isDashed() && args.fShape->asLine(pts, &inverted)) {
// We should never have an inverse dashed case.
SkASSERT(!inverted);
return GrDashingEffect::CanDrawDashLine(pts, args.fShape->style(), *args.fViewMatrix);
}
return false;
}
bool GrDashLinePathRenderer::onDrawPath(const DrawPathArgs& args) {
GR_AUDIT_TRAIL_AUTO_FRAME(args.fRenderTargetContext->auditTrail(),
"GrDashLinePathRenderer::onDrawPath");
bool useHWAA = args.fRenderTargetContext->isUnifiedMultisampled();
GrDashingEffect::AAMode aaMode;
if (useHWAA) {
// We ignore args.fAntiAlias here and force anti aliasing when using MSAA. Otherwise,
// we can wind up with external edges antialiased and internal edges unantialiased.
aaMode = GrDashingEffect::AAMode::kCoverageWithMSAA;
} else if (args.fAntiAlias) {
aaMode = GrDashingEffect::AAMode::kCoverage;
} else {
aaMode = GrDashingEffect::AAMode::kNone;
}
SkPoint pts[2];
SkAssertResult(args.fShape->asLine(pts, nullptr));
sk_sp<GrDrawOp> batch(GrDashingEffect::CreateDashLineBatch(args.fPaint->getColor(),
*args.fViewMatrix,
pts,
aaMode,
args.fShape->style()));
if (!batch) {
return false;
}
GrPipelineBuilder pipelineBuilder(*args.fPaint, useHWAA);
pipelineBuilder.setUserStencil(args.fUserStencilSettings);
args.fRenderTargetContext->addDrawOp(pipelineBuilder, *args.fClip, batch.get());
return true;
}
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