?? spotlight.txt
字號:
// spotlight=ps_2_0
// Code from MPC
sampler s0 : register(s0);
float4 p0 : register(c0);
#define width (p0[0])
#define height (p0[1])
#define counter (p0[2])
#define clock (p0[3])
#define PI acos(-1)
float4 main(float2 tex : TEXCOORD0) : COLOR
{
float4 c0 = tex2D(s0, tex);
float3 lightsrc = float3(sin(clock*3.1415/1.5)/2+0.5,cos(clock*3.1415)/2+0.5,1);
float3 light = normalize(lightsrc - float3(tex.x,tex.y,0));
c0 *= pow(dot(light, float3(0,0,1)), 50);
return c0;
}
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