Justin Marshall
78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
#pragma once
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#include "idlib/precompiled.h"
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#include "spatialvec.h"
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// Tungsten stores every spatial matrix in a six-row, eight-float-stride slab.
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// The two padding floats per row are intentional: the Xenon implementation
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// loads complete VMX vectors from each half-row.
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class idSpatialMat {
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public:
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static const int MAX_ROWS = 6;
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static const int MAX_COLUMNS = 6;
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static const int ROW_STRIDE = 8;
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idSpatialMat();
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idSpatialMat(int rows, int columns);
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idSpatialMat(const idSpatialMat& other);
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~idSpatialMat();
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idSpatialMat& operator=(const idSpatialMat& other);
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void SetSize(int rows, int columns);
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void ChangeNumRows(int rows);
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void Zero(int rows, int columns);
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void Zero();
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void Set(const idMat3& m1, const idMat3& m2);
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void Set(const idMat3& m1, const idMat3& m2,
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const idMat3& m3, const idMat3& m4);
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void SetData(int rows, int columns, float* data);
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void Negate();
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void Transpose(idSpatialMat& dst) const;
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void Subtract(const idSpatialMat& other);
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void Multiply(idSpatialVec& dst, const idSpatialVec& vec) const;
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void MultiplyAdd(idSpatialVec& dst, const idSpatialVec& vec) const;
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void MultiplySub(idSpatialVec& dst, const idSpatialVec& vec) const;
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void TransposeMultiplyAdd(idSpatialVec& dst, const idSpatialVec& vec) const;
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void TransposeMultiplySub(idSpatialVec& dst, const idSpatialVec& vec) const;
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void Multiply(idSpatialMat& dst, const idSpatialMat& other) const;
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void TransposeMultiply(idSpatialMat& dst, const idSpatialMat& other) const;
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bool Inverse(idSpatialMat& dst) const;
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idSpatialVec SubSpatialVec(int row) const;
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int GetNumRows() const { return numRows; }
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int GetNumColumns() const { return numColumns; }
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int GetAllocatedRows() const { return allocatedRows; }
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float* ToFloatPtr() { return mat; }
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const float* ToFloatPtr() const { return mat; }
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float* operator[](int row) { return mat + row * ROW_STRIDE; }
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const float* operator[](int row) const { return mat + row * ROW_STRIDE; }
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float& operator()(int row, int column) { return mat[row * ROW_STRIDE + column]; }
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float operator()(int row, int column) const { return mat[row * ROW_STRIDE + column]; }
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private:
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bool InverseNxN(idSpatialMat& dst, int dimension) const;
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bool Inverse1x1(idSpatialMat& dst) const;
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bool Inverse2x2(idSpatialMat& dst) const;
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bool Inverse3x3(idSpatialMat& dst) const;
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bool Inverse4x4(idSpatialMat& dst) const;
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bool Inverse5x5(idSpatialMat& dst) const;
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bool Inverse6x6(idSpatialMat& dst) const;
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void ClearPadding();
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int numRows;
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int numColumns;
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int allocatedRows;
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float* mat;
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};
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#if INTPTR_MAX == INT32_MAX
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static_assert(sizeof(idSpatialMat) == 16, "Recovered idSpatialMat ABI changed");
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#endif
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