SkSL::RP::ImmutableLValue Class Reference

Inheritance diagram for SkSL::RP::ImmutableLValue:

Public Member Functions
	ImmutableLValue (const Variable *v)
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

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

Detailed Description

Definition at line 862 of file SkSLRasterPipelineCodeGenerator.cpp.

Constructor & Destructor Documentation

ImmutableLValue()

SkSL::RP::ImmutableLValue::ImmutableLValue ( const Variable *  v )

inlineexplicit

Definition at line 864 of file SkSLRasterPipelineCodeGenerator.cpp.

: fVariable(v) {}

Member Function Documentation

dynamicSlotRange()

AutoStack * SkSL::RP::ImmutableLValue::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 874 of file SkSLRasterPipelineCodeGenerator.cpp.

                                           {
        return nullptr;
    }

fixedSlotRange()

SlotRange SkSL::RP::ImmutableLValue::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 870 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                      {
        return gen->getImmutableSlots(*fVariable);
    }

isWritable()

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

inlineoverridevirtual

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

Implements SkSL::RP::LValue.

Definition at line 866 of file SkSLRasterPipelineCodeGenerator.cpp.

                                     {
        return false;
    }

push()

bool SkSL::RP::ImmutableLValue::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 878 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                                   {
        if (dynamicOffset) {
            gen->builder()->push_immutable_indirect(fixedOffset, dynamicOffset->stackID(),
                                                    this->fixedSlotRange(gen));
        } else {
            gen->builder()->push_immutable(fixedOffset);
        }
        if (!swizzle.empty()) {
            gen->builder()->swizzle(fixedOffset.count, swizzle);
        }
        return true;
    }

store()

bool SkSL::RP::ImmutableLValue::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 894 of file SkSLRasterPipelineCodeGenerator.cpp.

                                                                    {
        SkDEBUGFAIL("immutable values cannot be stored into");
        return unsupported();
    }

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

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