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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_GFX_FILTERNODEWEBGL_H_
#define MOZILLA_GFX_FILTERNODEWEBGL_H_
#include <vector>
#include "mozilla/gfx/Filters.h"
#include "mozilla/gfx/PatternHelpers.h"
namespace mozilla::gfx {
class DrawTargetWebgl;
class FilterNodeSoftware;
/**
* FilterNodeWebgl wraps a FilterNodeSoftware for most operations that
* are not yet accelerated. To provide acceleration, this must be subclassed
* to override an optimized implementation for particular operations.
*/
class FilterNodeWebgl : public FilterNode {
public:
~FilterNodeWebgl() override;
FilterBackend GetBackendType() override { return FILTER_BACKEND_WEBGL; }
bool ReserveInputIndex(uint32_t aIndex);
bool SetInputAccel(uint32_t aIndex, SourceSurface* aSurface);
bool SetInputSoftware(uint32_t aIndex, SourceSurface* aSurface);
void SetInput(uint32_t aIndex, SourceSurface* aSurface) override;
void SetInput(uint32_t aIndex, FilterNode* aFilter) override;
void SetAttribute(uint32_t aIndex, bool) override;
void SetAttribute(uint32_t aIndex, uint32_t) override;
void SetAttribute(uint32_t aIndex, Float) override;
void SetAttribute(uint32_t aIndex, const Size&) override;
void SetAttribute(uint32_t aIndex, const IntSize&) override;
void SetAttribute(uint32_t aIndex, const IntPoint&) override;
void SetAttribute(uint32_t aIndex, const Rect&) override;
void SetAttribute(uint32_t aIndex, const IntRect&) override;
void SetAttribute(uint32_t aIndex, const Point&) override;
void SetAttribute(uint32_t aIndex, const Matrix&) override;
void SetAttribute(uint32_t aIndex, const Matrix5x4&) override;
void SetAttribute(uint32_t aIndex, const Point3D&) override;
void SetAttribute(uint32_t aIndex, const DeviceColor&) override;
void SetAttribute(uint32_t aIndex, const Float* aFloat,
uint32_t aSize) override;
IntRect MapRectToSource(const IntRect& aRect, const IntRect& aMax,
FilterNode* aSourceNode) override;
virtual void Draw(DrawTargetWebgl* aDT, const Rect& aSourceRect,
const Point& aDestPoint, const DrawOptions& aOptions);
virtual already_AddRefed<SourceSurface> DrawChild(DrawTargetWebgl* aDT,
const Rect& aSourceRect,
Point& aSurfaceOffset);
virtual DeviceColor GetColor() const { return DeviceColor(1, 1, 1, 1); }
virtual void ResolveInputs(DrawTargetWebgl* aDT, bool aAccel) {}
void ResolveAllInputs(DrawTargetWebgl* aDT);
protected:
std::vector<RefPtr<FilterNodeWebgl>> mInputFilters;
std::vector<RefPtr<SourceSurface>> mInputSurfaces;
uint32_t mInputMask = 0;
FilterType mType;
RefPtr<FilterNodeSoftware> mSoftwareFilter;
friend class DrawTargetWebgl;
explicit FilterNodeWebgl(FilterType aType);
static already_AddRefed<FilterNodeWebgl> Create(FilterType aType);
size_t NumberOfSetInputs() const {
return std::max(mInputSurfaces.size(), mInputFilters.size());
}
virtual int32_t InputIndex(uint32_t aInputEnumIndex) const;
IntRect MapInputRectToSource(uint32_t aInputEnumIndex, const IntRect& aRect,
const IntRect& aMax, FilterNode* aSourceNode);
};
class FilterNodeCropWebgl : public FilterNodeWebgl {
public:
FilterNodeCropWebgl() : FilterNodeWebgl(FilterType::CROP) {}
void SetAttribute(uint32_t aIndex, const Rect& aValue) override;
IntRect MapRectToSource(const IntRect& aRect, const IntRect& aMax,
FilterNode* aSourceNode) override;
void Draw(DrawTargetWebgl* aDT, const Rect& aSourceRect,
const Point& aDestPoint, const DrawOptions& aOptions) override;
private:
IntRect mCropRect;
int32_t InputIndex(uint32_t aInputEnumIndex) const override;
};
class FilterNodeTransformWebgl : public FilterNodeWebgl {
public:
FilterNodeTransformWebgl() : FilterNodeWebgl(FilterType::TRANSFORM) {}
void SetAttribute(uint32_t aIndex, uint32_t aValue) override;
void SetAttribute(uint32_t aIndex, const Matrix& aValue) override;
IntRect MapRectToSource(const IntRect& aRect, const IntRect& aMax,
FilterNode* aSourceNode) override;
already_AddRefed<SourceSurface> DrawChild(DrawTargetWebgl* aDT,
const Rect& aSourceRect,
Point& aSurfaceOffset) override;
protected:
Matrix mMatrix;
SamplingFilter mSamplingFilter = SamplingFilter::GOOD;
int32_t InputIndex(uint32_t aInputEnumIndex) const override;
};
class FilterNodeDeferInputWebgl : public FilterNodeTransformWebgl {
public:
FilterNodeDeferInputWebgl(RefPtr<Path> aPath, const Pattern& aPattern,
const IntRect& aSourceRect,
const Matrix& aDestTransform,
const DrawOptions& aOptions,
const StrokeOptions* aStrokeOptions);
void ResolveInputs(DrawTargetWebgl* aDT, bool aAccel) override;
DeviceColor GetColor() const override;
private:
RefPtr<Path> mPath;
GeneralPattern mPattern;
IntRect mSourceRect;
Matrix mDestTransform;
DrawOptions mOptions;
Maybe<StrokeOptions> mStrokeOptions;
UniquePtr<Float[]> mDashPatternStorage;
};
class FilterNodeGaussianBlurWebgl : public FilterNodeWebgl {
public:
FilterNodeGaussianBlurWebgl() : FilterNodeWebgl(FilterType::GAUSSIAN_BLUR) {}
void SetAttribute(uint32_t aIndex, float aValue) override;
IntRect MapRectToSource(const IntRect& aRect, const IntRect& aMax,
FilterNode* aSourceNode) override;
void Draw(DrawTargetWebgl* aDT, const Rect& aSourceRect,
const Point& aDestPoint, const DrawOptions& aOptions) override;
private:
float mStdDeviation = 0;
int32_t InputIndex(uint32_t aInputEnumIndex) const override;
};
} // namespace mozilla::gfx
#endif /* MOZILLA_GFX_FILTERNODEWEBGL_H_ */
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