45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
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#include "render/IConstantMapping.h"
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IConstantMapping::IConstantMapping()
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:lastSlotId(0)
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{
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}
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IConstantMapping::~IConstantMapping()
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{
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}
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uint32 IConstantMapping::GetAlignedSize()
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{
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return (lastSlotId + 1) * HLSL_CONSTANT_SIZE * (mapping.size() > 0 ? 1 : 0);
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}
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void IConstantMapping::InsertConstant(const String& name, uint32 numRows, uint32 numCols)
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{
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if(!numRows || !numCols) return;
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if(numRows == 1)
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{
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//try to insert variable in @white spaces@
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if(spaces.size() > 0)
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{
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for(ConstantCollectionItr it = spaces.begin(); it != spaces.end(); ++it)
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{
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if((*it).ColumnCount <= numCols) //found suitable white space! Fill it ^^
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{
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mapping.push_back(IConstantMappingData((*it).SlotID, (*it).SlotOffset, 1, numCols));
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(*it).SlotOffset += numCols;
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(*it).ColumnCount -= numCols;
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if((*it).ColumnCount <= 0)
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spaces.erase(it);
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return;
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}
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}
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}
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mapping.push_back(IConstantMappingData(lastSlotId++, 0, 1, numCols));
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if(numCols < 4)
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spaces.push_back(IConstantMappingData(lastSlotId, numCols, 1, 4 - numCols));
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}
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else
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{
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mapping.push_back(IConstantMappingData(lastSlotId, 0, numRows, numCols));
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lastSlotId+=numRows;
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}
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}
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