20 lines
No EOL
931 B
PostScript
20 lines
No EOL
931 B
PostScript
#include "fluid_common.h"
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//////////////////////////////////////////////////////////////////////////////////////////
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// Pixel
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float4 main( p_fluidsim input ) : SV_Target
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{
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float4 L = Texture_velocity1.SampleLevel( samPointClamp, LEFTCELL, 0 );
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float4 R = Texture_velocity1.SampleLevel( samPointClamp, RIGHTCELL, 0 );
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float4 B = Texture_velocity1.SampleLevel( samPointClamp, BOTTOMCELL, 0 );
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float4 T = Texture_velocity1.SampleLevel( samPointClamp, TOPCELL, 0 );
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float4 D = Texture_velocity1.SampleLevel( samPointClamp, DOWNCELL, 0 );
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float4 U = Texture_velocity1.SampleLevel( samPointClamp, UPCELL, 0 );
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float4 vorticity;
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vorticity.xyz = 0.5 * float3( (( T.z - B.z ) - ( U.y - D.y )) ,
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(( U.x - D.x ) - ( R.z - L.z )) ,
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(( R.y - L.y ) - ( T.x - B.x )) );
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return vorticity;
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} |