//Author: Timeslip altered by Junker Locklear
//Adds to the game real Motion Blur
texture thisframe;
texture lastframe;
texture lastpass;
texture lastshader;
PixelShader PS = asm
{
ps.1.4
def c0,0.004,0,0,1 //Used to mod r0,r2 (Use these value for a 640,480 resolution)
def c1,0,0.001,0,1 //Used to mod r1,r3
def c2,1.5,1.5,1.5,0.5 //Used to set the alpha channel
texcrd r0.rgb,t0 //Get texture coordinates
mov r0.a,c2 //And put a value in r0.a so the validater doesn't complain about uninitalized registers
sub r3,r0,c1 //Copy the texture coords into the first four registers and shift them slightly
sub r2,r0,c0
add r1,r0,c1
add r0,r0,c0
phase //Second phase
texld r0,r0 //Sample the backbuffer at the four different points
texld r1,r1
texld r2,r2
texld r3,r3
add r0,r0,r1 //Add 'em all up and divide by 4
add r0,r0,r2
add_d4 r0,r0,r3
};
Technique T0
{
Pass P0
{
PixelShader = asm
{
ps.1.0 //Start by copying the backbuffer without doing anything interesting to it
tex t0
mov r0,t0
};
}
Pass P1
{
Texture[0] = <lastpass>; //We want to sample the results of the last pass so that it gets more blured with each pass
Texture[1] = <lastpass>;
Texture[2] = <lastpass>;
Texture[3] = <lastpass>;
PixelShader = <PS>; //Use the same predifined pixelshader for all further passes
}
Pass P2 { PixelShader = <PS>; }
Pass P3 { PixelShader = <PS>; }
Pass P4 { PixelShader = <PS>; }
Pass P5 { PixelShader = <PS>; }
Pass P6 { PixelShader = <PS>; }
Pass P7 { PixelShader = <PS>; }
Pass P8 { PixelShader = <PS>; }
Pass P9 { PixelShader = <PS>; }
Pass Pa
{
Texture[0] = <thisframe>;
Texture[1] = <lastframe>; //Use the previous frame as the second texture
Texture[2] = <lastpass>;
Texture[3] = <lastshader>;
PixelShader = asm
{
ps.1.3
tex t0 //Sample this frame
tex t1
tex t2
tex t3
//add_sat r0,r0,r1
sub_sat r0,t0,t1
sub_sat r1,t1,t0
add r1,r0,r1 //Then add them. This is the same as abs(r0-r1) would be if ps 1.x supported the abs instruction
mov r1.a, c0
add_sat r1, r1, r1
lrp r0, r1, t2, t3
};
}
}
