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source: data/trunk/programs/OldTV.cg @ 7708

Last change on this file since 7708 was 7708, checked in by dafrick, 14 years ago

Merging cleanup branch. You will need to update your data repository as well as your local copy of the code.

  • Property svn:eol-style set to native
File size: 1.4 KB
Line 
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2
3sampler Image: register(s0);
4sampler Rand: register(s1);
5sampler Noise: register(s2);
6
7float4 OldTV_ps(float2 pos: TEXCOORD1, float2 img: TEXCOORD0,
8    uniform float distortionFreq: register(c3),
9    uniform float distortionScale: register(c4),
10    uniform float distortionRoll: register(c5),
11    uniform float interference: register(c7),
12    uniform float frameLimit: register(c8),
13    uniform float frameShape: register(c0),
14    uniform float frameSharpness: register(c1),
15    uniform float time_0_X: register(c2),
16    uniform float sin_time_0_X: register(c6)
17
18) : COLOR {
19   // Define a frame shape
20   float f = (1 - pos.x * pos.x) * (1 - pos.y * pos.y);
21   float frame = saturate(frameSharpness * (pow(f, frameShape) - frameLimit));
22
23   // Interference ... just a texture filled with rand()
24   float rand = tex3D(Rand, float3(1.5 * pos, time_0_X)) - 0.2;
25
26   // Some signed noise for the distortion effect
27   float noisy = tex3D(Noise, float3(0, 0.5 * pos.y, 0.1 * time_0_X)) - 0.5;
28
29   // Repeat a 1 - x^2 (0 < x < 1) curve and roll it with sinus.
30   float dst = frac(pos.y * distortionFreq + distortionRoll * sin_time_0_X);
31   dst *= (1 - dst);
32   // Make sure distortion is highest in the center of the image
33   dst /= 1 + distortionScale * abs(pos.y);
34
35   // ... and finally distort
36   img.x += distortionScale * noisy * dst;
37   float4 image = tex2D(Image, img);
38
39   // Combine frame, distorted image and interference
40   return frame * (interference * rand + image);
41}
42
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