39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
#ifndef HGL_GRAPH_SCENE_INFO_INCLUDE
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#define HGL_GRAPH_SCENE_INFO_INCLUDE
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#include<hgl/math/Matrix.h>
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#include<hgl/CompOperator.h>
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namespace hgl
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{
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namespace graph
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{
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/**
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* MVP矩阵
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*/
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struct MVPMatrix
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{
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Matrix4f l2w; ///< Local to World
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//Matrix4f normal; ///<transpose(inverse(mat3(l2w)));
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Matrix3x4f normal; ///<这里用3x4，在Shader中是3x3(但实际它是3x4保存)
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Matrix4f mv; ///< view * local_to_world
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Matrix4f mvp; ///< projection * view * local_to_world
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public:
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void Set(const Matrix4f &w,const Matrix4f &vp,const Matrix4f &v)
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{
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l2w=w;
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normal=transpose(inverse(l2w));
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mv=v*l2w;
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mvp=vp*l2w;
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}
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CompOperatorMemcmp(const MVPMatrix &);
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};//struct MVPMatrix
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constexpr size_t MVPMatrixBytes=sizeof(MVPMatrix);
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_SCENE_INFO_INCLUDE
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