SkSL::RP::SwizzleLValue Class Reference

Inheritance diagram for SkSL::RP::SwizzleLValue:

Public Member Functions
	SwizzleLValue (std::unique_ptr< LValue > p, const ComponentArray &c)
bool	isWritable () const override
SlotRange	fixedSlotRange (Generator *gen) override
AutoStack *	dynamicSlotRange () override
SkSpan< const int8_t >	swizzle () 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

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

Detailed Description

Definition at line 906 of file SkSLRasterPipelineCodeGenerator.cpp.

Constructor & Destructor Documentation

SwizzleLValue()

SkSL::RP::SwizzleLValue::SwizzleLValue ( std::unique_ptr< LValue >  p, const ComponentArray &  c  )

inlineexplicit

Definition at line 908 of file SkSLRasterPipelineCodeGenerator.cpp.

            : fParent(std::move(p))
            , fComponents(c) {
        SkASSERT(!fComponents.empty() && fComponents.size() <= 4);
    }

Member Function Documentation

dynamicSlotRange()

AutoStack * SkSL::RP::SwizzleLValue::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 922 of file SkSLRasterPipelineCodeGenerator.cpp.

                                           {
        return fParent->dynamicSlotRange();
    }

fixedSlotRange()

SlotRange SkSL::RP::SwizzleLValue::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 918 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                      {
        return fParent->fixedSlotRange(gen);
    }

isWritable()

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

inlineoverridevirtual

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

Implements SkSL::RP::LValue.

Definition at line 914 of file SkSLRasterPipelineCodeGenerator.cpp.

                                     {
        return fParent->isWritable();
    }

push()

bool SkSL::RP::SwizzleLValue::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 930 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                                   {
        if (!swizzle.empty()) {
            SkDEBUGFAIL("swizzle-of-a-swizzle should have been folded out in front end");
            return unsupported();
        }
        return fParent->push(gen, fixedOffset, dynamicOffset, fComponents);
    }

store()

bool SkSL::RP::SwizzleLValue::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 941 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                                    {
        if (!swizzle.empty()) {
            SkDEBUGFAIL("swizzle-of-a-swizzle should have been folded out in front end");
            return unsupported();
        }
        return fParent->store(gen, fixedOffset, dynamicOffset, fComponents);
    }

swizzle()

SkSpan< const int8_t > SkSL::RP::SwizzleLValue::swizzle ( )

inlineoverridevirtual

Returns the swizzle components of the lvalue, or an empty span for non-swizzle LValues.

Reimplemented from SkSL::RP::LValue.

Definition at line 926 of file SkSLRasterPipelineCodeGenerator.cpp.

                                            {
        return fComponents;
    }

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

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