Move Pathrenderers to batches folder

src/gpu/GrStencilAndCoverPathRenderer.cpp

-
-/*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#include "GrStencilAndCoverPathRenderer.h"
-#include "GrCaps.h"
-#include "GrContext.h"
-#include "GrGpu.h"
-#include "GrPath.h"
-#include "GrRenderTarget.h"
-#include "GrResourceProvider.h"
-#include "GrStrokeInfo.h"
-
-/*
- * For now paths only natively support winding and even odd fill types
- */
-static GrPathRendering::FillType convert_skpath_filltype(SkPath::FillType fill) {
-    switch (fill) {
-        default:
-            SkFAIL("Incomplete Switch\n");
-        case SkPath::kWinding_FillType:
-        case SkPath::kInverseWinding_FillType:
-            return GrPathRendering::kWinding_FillType;
-        case SkPath::kEvenOdd_FillType:
-        case SkPath::kInverseEvenOdd_FillType:
-            return GrPathRendering::kEvenOdd_FillType;
-    }
-}
-
-GrPathRenderer* GrStencilAndCoverPathRenderer::Create(GrResourceProvider* resourceProvider,
-                                                      const GrCaps& caps) {
-    if (caps.shaderCaps()->pathRenderingSupport()) {
-        return new GrStencilAndCoverPathRenderer(resourceProvider);
-    } else {
-        return nullptr;
-    }
-}
-
-GrStencilAndCoverPathRenderer::GrStencilAndCoverPathRenderer(GrResourceProvider* resourceProvider)
-    : fResourceProvider(resourceProvider) {    
-}
-
-bool GrStencilAndCoverPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
-    if (args.fStroke->isHairlineStyle()) {
-        return false;
-    }
-    if (!args.fPipelineBuilder->getStencil().isDisabled()) {
-        return false;
-    }
-    if (args.fAntiAlias) {
-        return args.fPipelineBuilder->getRenderTarget()->isStencilBufferMultisampled();
-    } else {
-        return true; // doesn't do per-path AA, relies on the target having MSAA
-    }
-}
-
-static GrPath* get_gr_path(GrResourceProvider* resourceProvider, const SkPath& skPath,
-                           const GrStrokeInfo& stroke) {
-    GrUniqueKey key;
-    bool isVolatile;
-    GrPath::ComputeKey(skPath, stroke, &key, &isVolatile);
-    SkAutoTUnref<GrPath> path(
-        static_cast<GrPath*>(resourceProvider->findAndRefResourceByUniqueKey(key)));
-    if (!path) {
-        path.reset(resourceProvider->createPath(skPath, stroke));
-        if (!isVolatile) {
-            resourceProvider->assignUniqueKeyToResource(key, path);
-        }
-    } else {
-        SkASSERT(path->isEqualTo(skPath, stroke));
-    }
-    return path.detach();
-}
-
-void GrStencilAndCoverPathRenderer::onStencilPath(const StencilPathArgs& args) {
-    SkASSERT(!args.fPath->isInverseFillType());
-    SkAutoTUnref<GrPathProcessor> pp(GrPathProcessor::Create(GrColor_WHITE, *args.fViewMatrix));
-    SkAutoTUnref<GrPath> p(get_gr_path(fResourceProvider, *args.fPath, *args.fStroke));
-    args.fTarget->stencilPath(*args.fPipelineBuilder, pp, p,
-                              convert_skpath_filltype(args.fPath->getFillType()));
-}
-
-bool GrStencilAndCoverPathRenderer::onDrawPath(const DrawPathArgs& args) {
-    SkASSERT(!args.fStroke->isHairlineStyle());
-    const SkPath& path = *args.fPath;
-    GrPipelineBuilder* pipelineBuilder = args.fPipelineBuilder;
-    const SkMatrix& viewMatrix = *args.fViewMatrix;
-
-    SkASSERT(pipelineBuilder->getStencil().isDisabled());
-
-    if (args.fAntiAlias) {
-        SkASSERT(pipelineBuilder->getRenderTarget()->isStencilBufferMultisampled());
-        pipelineBuilder->enableState(GrPipelineBuilder::kHWAntialias_Flag);
-    }
-
-    SkAutoTUnref<GrPath> p(get_gr_path(fResourceProvider, path, *args.fStroke));
-
-    if (path.isInverseFillType()) {
-        GR_STATIC_CONST_SAME_STENCIL(kInvertedStencilPass,
-            kKeep_StencilOp,
-            kZero_StencilOp,
-            // We know our rect will hit pixels outside the clip and the user bits will be 0
-            // outside the clip. So we can't just fill where the user bits are 0. We also need to
-            // check that the clip bit is set.
-            kEqualIfInClip_StencilFunc,
-            0xffff,
-            0x0000,
-            0xffff);
-
-        pipelineBuilder->setStencil(kInvertedStencilPass);
-
-        // fake inverse with a stencil and cover
-        SkAutoTUnref<GrPathProcessor> pp(GrPathProcessor::Create(GrColor_WHITE, viewMatrix));
-        args.fTarget->stencilPath(*pipelineBuilder, pp, p,
-                                  convert_skpath_filltype(path.getFillType()));
-
-        SkMatrix invert = SkMatrix::I();
-        SkRect bounds =
-            SkRect::MakeLTRB(0, 0, SkIntToScalar(pipelineBuilder->getRenderTarget()->width()),
-                             SkIntToScalar(pipelineBuilder->getRenderTarget()->height()));
-        SkMatrix vmi;
-        // mapRect through persp matrix may not be correct
-        if (!viewMatrix.hasPerspective() && viewMatrix.invert(&vmi)) {
-            vmi.mapRect(&bounds);
-            // theoretically could set bloat = 0, instead leave it because of matrix inversion
-            // precision.
-            SkScalar bloat = viewMatrix.getMaxScale() * SK_ScalarHalf;
-            bounds.outset(bloat, bloat);
-        } else {
-            if (!viewMatrix.invert(&invert)) {
-                return false;
-            }
-        }
-        const SkMatrix& viewM = viewMatrix.hasPerspective() ? SkMatrix::I() : viewMatrix;
-        args.fTarget->drawNonAARect(*pipelineBuilder, args.fColor, viewM, bounds, invert);
-    } else {
-        GR_STATIC_CONST_SAME_STENCIL(kStencilPass,
-            kZero_StencilOp,
-            kKeep_StencilOp,
-            kNotEqual_StencilFunc,
-            0xffff,
-            0x0000,
-            0xffff);
-
-        pipelineBuilder->setStencil(kStencilPass);
-        SkAutoTUnref<GrPathProcessor> pp(GrPathProcessor::Create(args.fColor, viewMatrix));
-        args.fTarget->drawPath(*pipelineBuilder, pp, p,
-                               convert_skpath_filltype(path.getFillType()));
-    }
-
-    pipelineBuilder->stencil()->setDisabled();
-    return true;
-}