GPU Pro 5

1. Screen-Space Grass 231

float4 TDeviceSize [2]; // rtt size in TDeviceSize [ 0]. xy

float4 TTimer [1]; // game time in TTimer [ 0 ] . w

void vsmain( float3 inPos : POSITION ,

float3 inTex : TEXCOORD ,

//

out float4 outPos : POSITION ,

out float4 outTex0 : TEXCOORD0 )

{

outPos=inPos ;

//

outTex0=inTex ;

// hal f p ixel o f f s et

outTex0 . xy+= TDeviceSize [1].zw ; // 0.5f / rtt size in [1].zw

}

float _blend( float val , float val0 , float val1 , float res0 ,

float res1 )

{

if( val <= val0 ) return res0 ;

if( val >= val1 ) return res1 ;

//

return res0 +(val−val0 ) ( res1−res0 )/(val1−val0 );

}

float4 psmain( float4 inTex0 : TEXCOORD0 ,

float2 inSPos : VPOS ):COLOR ...