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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 "src/gpu/ganesh/PathRendererChain.h"
#include "include/gpu/GrDirectContext.h"
#include "include/gpu/GrRecordingContext.h"
#include "src/gpu/ganesh/GrCaps.h"
#include "src/gpu/ganesh/GrDirectContextPriv.h"
#include "src/gpu/ganesh/GrGpu.h"
#include "src/gpu/ganesh/GrRecordingContextPriv.h"
#include "src/gpu/ganesh/GrShaderCaps.h"
#include "src/gpu/ganesh/geometry/GrStyledShape.h"
#include "src/gpu/ganesh/ops/AAConvexPathRenderer.h"
#include "src/gpu/ganesh/ops/AAHairLinePathRenderer.h"
#include "src/gpu/ganesh/ops/AALinearizingConvexPathRenderer.h"
#include "src/gpu/ganesh/ops/AtlasPathRenderer.h"
#include "src/gpu/ganesh/ops/DashLinePathRenderer.h"
#include "src/gpu/ganesh/ops/DefaultPathRenderer.h"
#include "src/gpu/ganesh/ops/SmallPathRenderer.h"
#include "src/gpu/ganesh/ops/TessellationPathRenderer.h"
#include "src/gpu/ganesh/ops/TriangulatingPathRenderer.h"
namespace skgpu::ganesh {
PathRendererChain::PathRendererChain(GrRecordingContext* context, const Options& options) {
const GrCaps& caps = *context->priv().caps();
if (options.fGpuPathRenderers & GpuPathRenderers::kDashLine) {
fChain.push_back(sk_make_sp<ganesh::DashLinePathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kAAConvex) {
fChain.push_back(sk_make_sp<AAConvexPathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kAAHairline) {
fChain.push_back(sk_make_sp<AAHairLinePathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kAALinearizing) {
fChain.push_back(sk_make_sp<AALinearizingConvexPathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kAtlas) {
if (auto atlasPathRenderer = AtlasPathRenderer::Make(context)) {
fAtlasPathRenderer = atlasPathRenderer.get();
context->priv().addOnFlushCallbackObject(atlasPathRenderer.get());
fChain.push_back(std::move(atlasPathRenderer));
}
}
#if !defined(SK_ENABLE_OPTIMIZE_SIZE)
if (options.fGpuPathRenderers & GpuPathRenderers::kSmall) {
fChain.push_back(sk_make_sp<SmallPathRenderer>());
}
if (options.fGpuPathRenderers & GpuPathRenderers::kTriangulating) {
fChain.push_back(sk_make_sp<TriangulatingPathRenderer>());
}
#endif
if (options.fGpuPathRenderers & GpuPathRenderers::kTessellation) {
if (TessellationPathRenderer::IsSupported(caps)) {
auto tess = sk_make_sp<TessellationPathRenderer>();
fTessellationPathRenderer = 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<DefaultPathRenderer>());
}
PathRenderer* PathRendererChain::getPathRenderer(const PathRenderer::CanDrawPathArgs& args,
DrawType drawType,
PathRenderer::StencilSupport* stencilSupport) {
static_assert(PathRenderer::kNoSupport_StencilSupport <
PathRenderer::kStencilOnly_StencilSupport);
static_assert(PathRenderer::kStencilOnly_StencilSupport <
PathRenderer::kNoRestriction_StencilSupport);
PathRenderer::StencilSupport minStencilSupport;
if (DrawType::kStencil == drawType) {
minStencilSupport = PathRenderer::kStencilOnly_StencilSupport;
} else if (DrawType::kStencilAndColor == drawType) {
minStencilSupport = PathRenderer::kNoRestriction_StencilSupport;
} else {
minStencilSupport = PathRenderer::kNoSupport_StencilSupport;
}
if (minStencilSupport != PathRenderer::kNoSupport_StencilSupport) {
// We don't support (and shouldn't need) stenciling of non-fill paths.
if (!args.fShape->style().isSimpleFill()) {
return nullptr;
}
}
PathRenderer* bestPathRenderer = nullptr;
for (const sk_sp<PathRenderer>& pr : fChain) {
PathRenderer::StencilSupport support = PathRenderer::kNoSupport_StencilSupport;
if (PathRenderer::kNoSupport_StencilSupport != minStencilSupport) {
support = pr->getStencilSupport(*args.fShape);
if (support < minStencilSupport) {
continue;
}
}
PathRenderer::CanDrawPath canDrawPath = pr->canDrawPath(args);
if (PathRenderer::CanDrawPath::kNo == canDrawPath) {
continue;
}
if (PathRenderer::CanDrawPath::kAsBackup == canDrawPath && bestPathRenderer) {
continue;
}
if (stencilSupport) {
*stencilSupport = support;
}
bestPathRenderer = pr.get();
if (PathRenderer::CanDrawPath::kYes == canDrawPath) {
break;
}
}
return bestPathRenderer;
}
} // namespace skgpu::ganesh