SkSL::RP::UnownedLValueSlice Class Reference

Inheritance diagram for SkSL::RP::UnownedLValueSlice:

Public Member Functions
	UnownedLValueSlice (LValue *p, int initialSlot, int numSlots)
bool	isWritable () const override
SlotRange	fixedSlotRange (Generator *gen) override
AutoStack *	dynamicSlotRange () override
bool	push (Generator *gen, SlotRange fixedOffset, AutoStack *dynamicOffset, SkSpan< const int8_t > swizzle) override
bool	store (Generator *gen, SlotRange fixedOffset, AutoStack *dynamicOffset, SkSpan< const int8_t > swizzle) override
Public Member Functions inherited from SkSL::RP::LValue
virtual	~LValue ()=default
virtual bool	isWritable () const =0
virtual SlotRange	fixedSlotRange (Generator *gen)=0
virtual AutoStack *	dynamicSlotRange ()=0
virtual SkSpan< const int8_t >	swizzle ()
virtual bool	push (Generator *gen, SlotRange fixedOffset, AutoStack *dynamicOffset, SkSpan< const int8_t > swizzle)=0
virtual bool	store (Generator *gen, SlotRange fixedOffset, AutoStack *dynamicOffset, SkSpan< const int8_t > swizzle)=0

Protected Attributes
LValue *	fParent

Additional Inherited Members
Public Attributes inherited from SkSL::RP::LValue
std::unique_ptr< Expression >	fScratchExpression

Detailed Description

Definition at line 957 of file SkSLRasterPipelineCodeGenerator.cpp.

Constructor & Destructor Documentation

UnownedLValueSlice()

SkSL::RP::UnownedLValueSlice::UnownedLValueSlice ( LValue *  p, int  initialSlot, int  numSlots  )

inlineexplicit

Definition at line 959 of file SkSLRasterPipelineCodeGenerator.cpp.

            : fParent(p)
            , fInitialSlot(initialSlot)
            , fNumSlots(numSlots) {
        SkASSERT(fInitialSlot >= 0);
        SkASSERT(fNumSlots > 0);
    }

Member Function Documentation

dynamicSlotRange()

AutoStack * SkSL::RP::UnownedLValueSlice::dynamicSlotRange ( )

inlineoverridevirtual

Returns a stack which holds a single integer, representing the dynamic offset of the lvalue. This value does not incorporate the fixed offset. If null is returned, the lvalue doesn't have a dynamic offset. evaluateDynamicIndices must be called before this is used.

Implements SkSL::RP::LValue.

Definition at line 980 of file SkSLRasterPipelineCodeGenerator.cpp.

                                           {
        return fParent->dynamicSlotRange();
    }

fixedSlotRange()

SlotRange SkSL::RP::UnownedLValueSlice::fixedSlotRange ( Generator *  gen )

inlineoverridevirtual

Returns the fixed slot range of the lvalue, after it is winnowed down to the selected field/index. The range is calculated assuming every dynamic index will evaluate to zero.

Implements SkSL::RP::LValue.

Definition at line 971 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                      {
        SlotRange range = fParent->fixedSlotRange(gen);
        SlotRange adjusted = range;
        adjusted.index += fInitialSlot;
        adjusted.count = fNumSlots;
        SkASSERT((adjusted.index + adjusted.count) <= (range.index + range.count));
        return adjusted;
    }

isWritable()

bool SkSL::RP::UnownedLValueSlice::isWritable ( ) const

inlineoverridevirtual

Returns true if this lvalue is actually writable–temporaries and uniforms are not.

Implements SkSL::RP::LValue.

Definition at line 967 of file SkSLRasterPipelineCodeGenerator.cpp.

                                     {
        return fParent->isWritable();
    }

push()

bool SkSL::RP::UnownedLValueSlice::push ( Generator *  gen, SlotRange  fixedOffset, AutoStack *  dynamicOffset, SkSpan< const int8_t >  swizzle  )

inlineoverridevirtual

Pushes values directly onto the stack.

Implements SkSL::RP::LValue.

Definition at line 984 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                                   {
        return fParent->push(gen, fixedOffset, dynamicOffset, swizzle);
    }

store()

bool SkSL::RP::UnownedLValueSlice::store ( Generator *  gen, SlotRange  fixedOffset, AutoStack *  dynamicOffset, SkSpan< const int8_t >  swizzle  )

inlineoverridevirtual

Stores topmost values from the stack directly into the lvalue.

Implements SkSL::RP::LValue.

Definition at line 991 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                                    {
        return fParent->store(gen, fixedOffset, dynamicOffset, swizzle);
    }

Member Data Documentation

fParent

LValue* SkSL::RP::UnownedLValueSlice::fParent

protected

Definition at line 999 of file SkSLRasterPipelineCodeGenerator.cpp.

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The documentation for this class was generated from the following file:

• third_party/skia/src/sksl/codegen/SkSLRasterPipelineCodeGenerator.cpp