blob: 8f13bf60edf423e2ee2b09dda683267e4b1188bc [file] [log] [blame]
/*
* 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 "src/gpu/GrPathRendererChain.h"
#include "include/gpu/GrDirectContext.h"
#include "include/gpu/GrRecordingContext.h"
#include "src/gpu/GrCaps.h"
#include "src/gpu/GrDirectContextPriv.h"
#include "src/gpu/GrGpu.h"
#include "src/gpu/GrRecordingContextPriv.h"
#include "src/gpu/GrShaderCaps.h"
#include "src/gpu/geometry/GrStyledShape.h"
#include "src/gpu/ops/GrAAConvexPathRenderer.h"
#include "src/gpu/ops/GrAAHairLinePathRenderer.h"
#include "src/gpu/ops/GrAALinearizingConvexPathRenderer.h"
#include "src/gpu/ops/GrDashLinePathRenderer.h"
#include "src/gpu/ops/GrDefaultPathRenderer.h"
#include "src/gpu/ops/GrSmallPathRenderer.h"
#include "src/gpu/ops/GrTriangulatingPathRenderer.h"
#include "src/gpu/tessellate/GrTessellationPathRenderer.h"
GrPathRendererChain::GrPathRendererChain(GrRecordingContext* context, const Options& options) {
const GrCaps& caps = *context->priv().caps();
if (options.fGpuPathRenderers & GpuPathRenderers::kDashLine) {
fChain.push_back(sk_make_sp<GrDashLinePathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kAAConvex) {
fChain.push_back(sk_make_sp<GrAAConvexPathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kAAHairline) {
fChain.push_back(sk_make_sp<GrAAHairLinePathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kAALinearizing) {
fChain.push_back(sk_make_sp<GrAALinearizingConvexPathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kSmall) {
fChain.push_back(sk_make_sp<GrSmallPathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kTriangulating) {
fChain.push_back(sk_make_sp<GrTriangulatingPathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kTessellation) {
if (GrTessellationPathRenderer::IsSupported(caps)) {
auto tess = sk_make_sp<GrTessellationPathRenderer>(context);
fTessellationPathRenderer = tess.get();
context->priv().addOnFlushCallbackObject(tess.get());
fChain.push_back(std::move(tess));
}
}
// We always include the default path renderer (as well as SW), so we can draw any path
fChain.push_back(sk_make_sp<GrDefaultPathRenderer>());
}
GrPathRenderer* GrPathRendererChain::getPathRenderer(
const GrPathRenderer::CanDrawPathArgs& args,
DrawType drawType,
GrPathRenderer::StencilSupport* stencilSupport) {
static_assert(GrPathRenderer::kNoSupport_StencilSupport <
GrPathRenderer::kStencilOnly_StencilSupport);
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;
}
}
GrPathRenderer* bestPathRenderer = nullptr;
for (const sk_sp<GrPathRenderer>& pr : fChain) {
GrPathRenderer::StencilSupport support = GrPathRenderer::kNoSupport_StencilSupport;
if (GrPathRenderer::kNoSupport_StencilSupport != minStencilSupport) {
support = pr->getStencilSupport(*args.fShape);
if (support < minStencilSupport) {
continue;
}
}
GrPathRenderer::CanDrawPath canDrawPath = pr->canDrawPath(args);
if (GrPathRenderer::CanDrawPath::kNo == canDrawPath) {
continue;
}
if (GrPathRenderer::CanDrawPath::kAsBackup == canDrawPath && bestPathRenderer) {
continue;
}
if (stencilSupport) {
*stencilSupport = support;
}
bestPathRenderer = pr.get();
if (GrPathRenderer::CanDrawPath::kYes == canDrawPath) {
break;
}
}
return bestPathRenderer;
}