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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrPathRendererChain.h"
#include "GrCaps.h"
#include "GrShaderCaps.h"
#include "gl/GrGLCaps.h"
#include "GrContext.h"
#include "GrGpu.h"
#include "ops/GrAAConvexPathRenderer.h"
#include "ops/GrAADistanceFieldPathRenderer.h"
#include "ops/GrAAHairLinePathRenderer.h"
#include "ops/GrAALinearizingConvexPathRenderer.h"
#include "ops/GrDashLinePathRenderer.h"
#include "ops/GrDefaultPathRenderer.h"
#include "ops/GrMSAAPathRenderer.h"
#include "ops/GrPLSPathRenderer.h"
#include "ops/GrStencilAndCoverPathRenderer.h"
#include "ops/GrTessellatingPathRenderer.h"
GrPathRendererChain::GrPathRendererChain(GrContext* context, const Options& options) {
if (!options.fDisableAllPathRenderers) {
const GrCaps& caps = *context->caps();
this->addPathRenderer(new GrDashLinePathRenderer)->unref();
if (GrPathRenderer* pr = GrStencilAndCoverPathRenderer::Create(context->resourceProvider(),
caps)) {
this->addPathRenderer(pr)->unref();
}
#ifndef SK_BUILD_FOR_ANDROID_FRAMEWORK
if (caps.sampleShadingSupport()) {
this->addPathRenderer(new GrMSAAPathRenderer)->unref();
}
#endif
this->addPathRenderer(new GrAAHairLinePathRenderer)->unref();
this->addPathRenderer(new GrAAConvexPathRenderer)->unref();
this->addPathRenderer(new GrAALinearizingConvexPathRenderer)->unref();
if (caps.shaderCaps()->plsPathRenderingSupport()) {
this->addPathRenderer(new GrPLSPathRenderer)->unref();
}
if (!options.fDisableDistanceFieldRenderer) {
this->addPathRenderer(new GrAADistanceFieldPathRenderer)->unref();
}
this->addPathRenderer(new GrTessellatingPathRenderer)->unref();
this->addPathRenderer(new GrDefaultPathRenderer(caps.twoSidedStencilSupport(),
caps.stencilWrapOpsSupport()))->unref();
}
}
GrPathRendererChain::~GrPathRendererChain() {
for (int i = 0; i < fChain.count(); ++i) {
fChain[i]->unref();
}
}
GrPathRenderer* GrPathRendererChain::addPathRenderer(GrPathRenderer* pr) {
fChain.push_back() = pr;
pr->ref();
return pr;
}
GrPathRenderer* GrPathRendererChain::getPathRenderer(
const GrPathRenderer::CanDrawPathArgs& args,
DrawType drawType,
GrPathRenderer::StencilSupport* stencilSupport) {
GR_STATIC_ASSERT(GrPathRenderer::kNoSupport_StencilSupport <
GrPathRenderer::kStencilOnly_StencilSupport);
GR_STATIC_ASSERT(GrPathRenderer::kStencilOnly_StencilSupport <
GrPathRenderer::kNoRestriction_StencilSupport);
GrPathRenderer::StencilSupport minStencilSupport;
if (DrawType::kStencil == drawType) {
minStencilSupport = GrPathRenderer::kStencilOnly_StencilSupport;
} else if (DrawType::kStencilAndColor == drawType) {
minStencilSupport = GrPathRenderer::kNoRestriction_StencilSupport;
} else {
minStencilSupport = GrPathRenderer::kNoSupport_StencilSupport;
}
if (minStencilSupport != GrPathRenderer::kNoSupport_StencilSupport) {
// We don't support (and shouldn't need) stenciling of non-fill paths.
if (!args.fShape->style().isSimpleFill()) {
return nullptr;
}
}
for (int i = 0; i < fChain.count(); ++i) {
if (fChain[i]->canDrawPath(args)) {
if (GrPathRenderer::kNoSupport_StencilSupport != minStencilSupport) {
GrPathRenderer::StencilSupport support = fChain[i]->getStencilSupport(*args.fShape);
if (support < minStencilSupport) {
continue;
} else if (stencilSupport) {
*stencilSupport = support;
}
}
return fChain[i];
}
}
return nullptr;
}
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