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* Copyright 2021 Google LLC
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef skgpu_Device_DEFINED
#define skgpu_Device_DEFINED
#include "src/core/SkDevice.h"
#include "experimental/graphite/src/DrawOrder.h"
#include "experimental/graphite/src/EnumBitMask.h"
#include "experimental/graphite/src/geom/Rect.h"
class SkStrokeRec;
namespace skgpu {
class BoundsManager;
class Clip;
class Context;
class DrawContext;
class Recorder;
class Shape;
class TextureProxy;
class Transform;
class Device final : public SkBaseDevice {
~Device() override;
static sk_sp<Device> Make(Recorder*, const SkImageInfo&);
static sk_sp<Device> Make(Recorder*,
Recorder* recorder() { return fRecorder; }
// This call is triggered from the Recorder on its registered Devices. It is typically called
// when the Recorder is abandoned or deleted.
void abandonRecorder();
// Ensures clip elements are drawn that will clip previous draw calls, snaps all pending work
// from the DrawContext as a RenderPassTask and records it in the Device's recorder.
void flushPendingWorkToRecorder();
bool readPixels(Context*, Recorder*, const SkPixmap& dst, int x, int y);
class IntersectionTreeSet;
// Clipping
void onSave() override {}
void onRestore() override {}
bool onClipIsAA() const override { return false; }
bool onClipIsWideOpen() const override { return true; }
ClipType onGetClipType() const override { return ClipType::kRect; }
SkIRect onDevClipBounds() const override;
void onClipRect(const SkRect& rect, SkClipOp, bool aa) override {}
void onClipRRect(const SkRRect& rrect, SkClipOp, bool aa) override {}
void onClipPath(const SkPath& path, SkClipOp, bool aa) override {}
// Drawing
void drawPaint(const SkPaint& paint) override;
void drawRect(const SkRect& r, const SkPaint& paint) override;
void drawOval(const SkRect& oval, const SkPaint& paint) override;
void drawRRect(const SkRRect& rr, const SkPaint& paint) override;
void drawPoints(SkCanvas::PointMode mode, size_t count,
const SkPoint[], const SkPaint& paint) override;
void drawPath(const SkPath& path, const SkPaint& paint, bool pathIsMutable = false) override;
// No need to specialize drawDRRect, drawArc, drawRegion, drawPatch as the default impls all
// route to drawPath, drawRect, or drawVertices as desired.
// Pixel management
sk_sp<SkSurface> makeSurface(const SkImageInfo&, const SkSurfaceProps&) override;
SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) override;
bool onReadPixels(const SkPixmap&, int x, int y) override;
* TODO: These functions are not in scope to be implemented yet, but will need to be. Call them
* out explicitly so it's easy to keep tabs on how close feature-complete actually is.
void onAsRgnClip(SkRegion*) const override {}
void onClipShader(sk_sp<SkShader>) override {}
void onClipRegion(const SkRegion& deviceRgn, SkClipOp) override {}
void onReplaceClip(const SkIRect& rect) override {}
bool onWritePixels(const SkPixmap&, int x, int y) override { return false; }
// TODO: This will likely be implemented with the same primitive building block that drawRect
// and drawRRect will rely on.
void drawEdgeAAQuad(const SkRect& rect, const SkPoint clip[4],
SkCanvas::QuadAAFlags aaFlags, const SkColor4f& color,
SkBlendMode mode) override {}
void drawEdgeAAImageSet(const SkCanvas::ImageSetEntry[], int count,
const SkPoint dstClips[], const SkMatrix preViewMatrices[],
const SkSamplingOptions&, const SkPaint&,
SkCanvas::SrcRectConstraint) override {}
// TODO: These image drawing APIs can likely be implemented with the same primitive building
// block that drawEdgeAAImageSet will use.
void drawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
const SkSamplingOptions&, const SkPaint&,
SkCanvas::SrcRectConstraint) override {}
void drawImageLattice(const SkImage*, const SkCanvas::Lattice&,
const SkRect& dst, SkFilterMode, const SkPaint&) override {}
void drawAtlas(const SkRSXform[], const SkRect[], const SkColor[], int count, sk_sp<SkBlender>,
const SkPaint&) override {}
void drawDrawable(SkCanvas*, SkDrawable*, const SkMatrix*) override {}
void drawVertices(const SkVertices*, sk_sp<SkBlender>, const SkPaint&) override {}
void drawCustomMesh(SkCustomMesh, sk_sp<SkBlender>, const SkPaint&) override {}
void drawShadow(const SkPath&, const SkDrawShadowRec&) override {}
void onDrawGlyphRunList(SkCanvas*, const SkGlyphRunList&, const SkPaint&) override {}
void drawDevice(SkBaseDevice*, const SkSamplingOptions&, const SkPaint&) override {}
void drawSpecial(SkSpecialImage*, const SkMatrix& localToDevice,
const SkSamplingOptions&, const SkPaint&) override {}
sk_sp<SkSpecialImage> makeSpecial(const SkBitmap&) override;
sk_sp<SkSpecialImage> makeSpecial(const SkImage*) override;
sk_sp<SkSpecialImage> snapSpecial(const SkIRect& subset, bool forceCopy = false) override;
// DrawFlags alters the effects used by drawShape.
enum class DrawFlags : unsigned {
kNone = 0b00,
// Any SkMaskFilter on the SkPaint passed into drawShape() is ignored.
// - drawPaint, drawVertices, drawAtlas
// - drawShape after it's applied the mask filter.
kIgnoreMaskFilter = 0b01,
// Any SkPathEffect on the SkPaint passed into drawShape() is ignored.
// - drawPaint, drawImageLattice, drawImageRect, drawEdgeAAImageSet, drawVertices, drawAtlas
// - drawShape after it's applied the path effect.
kIgnorePathEffect = 0b10,
Device(Recorder*, sk_sp<DrawContext>);
// Handles applying path effects, mask filters, stroke-and-fill styles, and hairlines.
// Ignores geometric style on the paint in favor of explicitly provided SkStrokeRec and flags.
void drawShape(const Shape&,
const SkPaint&,
const SkStrokeRec&,
Mask<DrawFlags> = DrawFlags::kNone);
// Determines most optimal painters order for a draw of the given shape and style. This computes
// the draw's bounds, applying both the style and scissor to the returned bounds. Low-level
// renderers must not draw outside of these bounds or decisions made about ordering draw
// operations at the Device level can be invalidated. In addition to the scissor test and draw
// bounds, this returns the largest compressed painter's order of the clip shapes that affect
// the draw (the draw's order must be greater than this value to be rendered/clipped correctly).
// This also records the draw's bounds to any clip elements that affect it so that they are
// recorded when popped off the stack, or making an image snapshot of the Device.
std::pair<Clip, CompressedPaintersOrder>
applyClipToDraw(const Transform&, const Shape&, const SkStrokeRec&, PaintersDepth z);
bool needsFlushBeforeDraw(int numNewDraws) const;
Recorder* fRecorder;
sk_sp<DrawContext> fDC;
// Tracks accumulated intersections for ordering dependent use of the color and depth attachment
// (i.e. depth-based clipping, and transparent blending)
std::unique_ptr<BoundsManager> fColorDepthBoundsManager;
// Tracks disjoint stencil indices for all recordered draws
std::unique_ptr<IntersectionTreeSet> fDisjointStencilSet;
// The max depth value sent to the DrawContext, incremented so each draw has a unique value.
PaintersDepth fCurrentDepth;
bool fDrawsOverlap;
} // namespace skgpu
#endif // skgpu_Device_DEFINED