blob: 1d679f2393013065bde9ff09081f9e22c53e88f0 [file] [log] [blame]
* Copyright 2021 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrGrAtlasRenderTask_DEFINED
#define GrGrAtlasRenderTask_DEFINED
#include "include/core/SkPath.h"
#include "src/gpu/GrDynamicAtlas.h"
#include "src/gpu/GrOpsTask.h"
struct SkIPoint16;
// Represents a GrRenderTask that draws paths into an atlas. This task gets added the DAG and left
// open, lays out its atlas while future tasks call addPath(), and finally adds its internal draw
// ops during onMakeClosed().
// The atlas texture does not get instantiated automatically. It is the creator's responsibility to
// call instantiate() at flush time.
class GrAtlasRenderTask : public GrOpsTask {
const GrTextureProxy* atlasProxy() const { return fDynamicAtlas->textureProxy(); }
GrSurfaceProxyView readView(const GrCaps& caps) const { return fDynamicAtlas->readView(caps); }
// Allocates a rectangle for, and stages the given path to be rendered into the atlas. Returns
// false if there was not room in the atlas. On success, writes out the location of the path's
// upper-left corner to 'locationInAtlas'.
bool addPath(const SkMatrix&, const SkPath&, SkIPoint pathDevTopLeft, int widthInAtlas,
int heightInAtlas, bool transposedInAtlas, SkIPoint16* locationInAtlas);
// Must be called at flush time. The texture proxy is instantiated with 'backingTexture', if
// provided. See GrDynamicAtlas.
void instantiate(GrOnFlushResourceProvider* onFlushRP,
sk_sp<GrTexture> backingTexture = nullptr) {
fDynamicAtlas->instantiate(onFlushRP, std::move(backingTexture));
// Adds internal ops to render the atlas before deferring to GrOpsTask::onMakeClosed.
ExpectedOutcome onMakeClosed(GrRecordingContext*, SkIRect* targetUpdateBounds) override;
void stencilAtlasRect(GrRecordingContext*, const SkRect&, const SkPMColor4f&,
const GrUserStencilSettings*);
void addAtlasDrawOp(GrOp::Owner, const GrCaps&);
// Executes the GrOpsTask and resolves msaa if needed.
bool onExecute(GrOpFlushState* flushState) override;
SkPath* getUberPath(GrFillRule fillRule) {
return &fUberPaths[fillRule == GrFillRule::kEvenOdd];
const std::unique_ptr<GrDynamicAtlas> fDynamicAtlas;
SkPath fUberPaths[2]; // 2 fill rules: "nonzero" and "even/odd".